/// Reporting unit // - this unit is a part of the freeware Synopse framework, // licensed under a MPL/GPL/LGPL tri-license; version 1.18 unit mORMotReport; (* This file is part of Synopse framework. Synopse framework. Copyright (C) 2015 Arnaud Bouchez Synopse Informatique - http://synopse.info *** BEGIN LICENSE BLOCK ***** Version: MPL 1.1/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The Original Code is Synopse framework. The Initial Developer of the Original Code is Angus Johnson. Portions created by the Initial Developer are Copyright (C) 2003 the Initial Developer. All Rights Reserved. Portions created by Arnaud Bouchez for Synopse are Copyright (C) 2015 Arnaud Bouchez. All Rights Reserved. Contributor(s): - Celery - Leo - Mike Lamusse (mogulza) Alternatively, the contents of this file may be used under the terms of either the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the MPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the MPL, the GPL or the LGPL. ***** END LICENSE BLOCK ***** Initial Notes and Copyright: ****************************** Component Name: TPages Module: Pages Description: Report writer and previewer Version: 1.6 Date: 25-MAY-2004 (initial version) Target: Win32, Delphi 3 - Delphi 7 Author: Angus Johnson, http://www.angusj.com Copyright © 2003 Angus Johnson Notes: * TGDIPages is designed as a simple lightweight report writer. Reports are created in code, they are not banded, nor are they directly linked to TDatasets. If you're looking for a dataset aware report writer then TGDIPages is not for you. TGDIPages is a visual component based on a TScrollbox, though it isn't necessary to view reports prior to printing. * Main features include: + Text can be output either wrapped between page margins, in columns or at specified offsets. + Multiple alignment options - > left, right and justified in non-columned text > left, right and currency in columned text + Tabs to Assigned tabstops + Multi-line page headers, footers and column headers + Multiple fonts can be used. + Angled text output + Single, line & half, and double line spacing + Methods for printing bitmaps, metafiles, lines, boxes and arrows + Page numbering can be redefined + Text output 'groups' prevent blocks of text spanning across pages + Designed around a TScrollbox descendant preview window with: mouse click zoom control; keyboard handling of lineup, linedown, pageup and pagedown srolling; mouse wheel scrolling. * In order to get the best print quality, TGDIPages uses the selected printer driver's resolution to prepare reports. If a report will be printed to a different printer (eg by using a PrintDialog), it's preferable to change to that printer object BEFORE preparing the report. Otherwise, the report will be stretch down to the printer canvas resulting in a slight degradation in print quality. Enhanced for the freeware Synopse framework: ********************************************** - Windows XP, Vista and Seven compatibility adding - fix printing metafiles and page groups on some printer (with bad drivers) - optionnaly use antialiaised drawing (via SynGdiPlus unit) - popup menu creation, with zoom, print or copy features (and custom entries) - direct PDF export (if a PDF printer is installed, or via SynPdf unit) - direct page export to clipboard as text - optional Black and White / Duplex mode (with out TPrinterNew custom class) - new useful methods for easy text adding (especially column definition) - new fast double buffering drawing - full Unicode text process (even before Delphi 2009) - speed up and various bug fixes to work with Delphi 5 up to XE3 Modifications © 2009-2015 Arnaud Bouchez Version 1.4 - February 8, 2010 - whole Synopse SQLite3 database framework released under the GNU Lesser General Public License version 3, instead of generic "Public Domain" Version 1.6 - new version, using our SynGdiPlus unit: if the GDI+ is available, it will use it to render the page using its AntiAliased engine; under Windows 98 or 2000, no antialiasing will occur, but the program will still run (since our SynGdiPlus unit use dynamic linking of the gdiplus.dll library); if only GDI+ 1.0 is available (i.e. with a Windows XP without any Office 2003/2007 installed) a pure Delphi version of GDI+ drawing is used, which should not be able to convert 100% of page content, but should work on most cases Version 1.8 - some fixes for compilation under Delphi 2009/2010 Version 1.9 - new AppendRichEdit method to draw RichEdit content - new WordWrapLeftCols property used to optionaly word wrap caLeft columns into multiple lines, i.e. if the text is wider than the column width, its content is wrapped to the next line (set to false by default) - this also will handle #13/#10 in column text as a "go to next line" command Version 1.9.2 - fix font color issue in header and footers - safety additional code to avoid any division per 0 exception Version 1.11 - fixed issue in TGDIPages.AppendRichEdit - see user feedback from http://synopse.info/forum/viewtopic.php?pid=671#p671 - added Author, Subject and Keywords optional parameters to TGDIPages.ExportPDF Version 1.12 - fixed one issue (in SynGdiPlus) for displaying bitmaps in anti-aliased mode and displaying underlined or stroken out text - new ForceInternalAntiAliased method (true by default) using SynGdiPlus instead of GDI+ 1.1 native conversion - OnStringToUnicodeEvent is now called for all text, whatever the alignment is - new property BiDiMode, for formatting the text in right to left order - added new DrawBMP overloaded method to add some bitmap as a (centered) paragraph, with some optional legend - bitmaps are now cached and reused in the exported PDF, if the same one is drawn multiple time in the document - added new AddBookMark, AddOutline and AddLink methods (working also with the PDF export using SynPdf) :) - live navigation via links in the preview screen, and via the new 'Bookmarks' popup menu entry - additional ExportPDF* properties used during PDF export - introducing the new TRenderPages class, for high-quality document rendering (used e.g. within SynProject for document preview and PDF generation, with basic understanding of the rtf format) Version 1.15 - fixed an endless loop in TGDIPages.DrawTextAcrossCols when wrapping text - fixed an issue in TGDIPages.DrawTextAcrossCols when test is exported to pdf (wrong clipping region set) - if TGDIPages.WordWrapLeftCols=TRUE, won't wrap column headers Version 1.16 - includes new TSynAnsiConvert classes for handling Ansi charsets - some minor fixes (e.g. preview landscape or keys for popup menu) - fix issue in TGDIPages.AppendRichEdit() when called on a blank page - enhanced the print preview screen with a left-sided button bar - new TGdiPages.RenderGraphic method (accepting both TBitmap and TMetaFile) Version 1.17 - now whole text process is UNICODE-ready, even on pre-Delphi-2009 versions - now implements font fall-back in internal Anti-Aliaised drawing, if the new ForceInternalAntiAliasedFontFallBack property is set to TRUE Version 1.18 - renamed SQLite3Pages.pas to mORMotReport.pas - TGdiPages now handles several page layouts per report - see new overloaded TGDIPages.NewPageLayout() methods and also Orientation property which now allows several page orientations per report - feature request [204b698b3d] - now internal page content (TMetaFile) is compressed using our SynLZ algorithm: we were able to generate reports with more than 20,000 pages! - added optional EndOfPagePositions parameter to TGDIPages.AppendRichEdit() - speed up and memory resource decrease for pdf export of huge reports - fixed issue about disabled Zoom menu entry if no Outline is defined - fixed unexpected exception with TGDIPages.DrawText() and huge string - proper function TGDIPages.GetLineHeight() computation - from kln feedback - added ExportPDFBackground and ExportPDFGeneratePDF15File properties - added ExportPDFEncryptionLevel/User/OwnerPassword/Permissions properties to optionally export report as 40 bit or 128 bit encrypted pdf - added setter method for ZoomStatus property (during preview) - [dd656b470b] - added TGDIPages.ExportPDFStream() method - to be used e.g. on servers - fixed [cfdc644038] about truncated parenthesis in pdf export for caCurrency - fixed [e7ffb69131] about TGDIPages.DrawGraphic() when the TGraphic is Empty - allow preview as a blank colored component at design time (thanks to Celery) - added VisibleButtons optional parameter to TGDIPages.ShowPreviewForm method as requested by [4d64a52675] - added withNewLine optional parameter to DrawText*() methods so that you may be able to append some text without creating a new paragraph - from a proposal patch by Mike Lamusse (mogulza): thanks for sharing! *) interface {.$define MOUSE_CLICK_PERFORM_ZOOM} // old not user-friendly behavior {.$define RENDERPAGES} // TRenderBox and TRenderPages are not yet finished {$define GDIPLUSDRAW} // optionaly (if ForceNoAntiAliased=false) use GDI+ to draw for antialiasing: // slower but smoother (need the GDI+ library, best with version 1.1) {.$define USEPDFPRINTER} // do not use the Synopse PDF engine, in Delphi code, but a PDF virtual printer {.$define PRINTERNEW} // if our custom Printer.pas unit is installed, use TPrinterNew class instead // of TPrinter to allow Black&White and Duplex printing // -> disabled by default, should be enabled globaly from the Project Options {$ifndef ENHANCEDRTL} {$undef PRINTERNEW} // Black&White and Duplex printing are only available with our Enhanced RTL {$endif} {$I Synopse.inc} // define HASINLINE USETYPEINFO CPU32 CPU64 OWNNORMTOUPPER uses SynCommons, SynLZ, {$ifndef USEPDFPRINTER} SynPdf, {$endif} Windows, Messages, SysUtils, Classes, Contnrs, {$ifdef GDIPLUSDRAW} SynGdiPlus, {$endif} Graphics, Controls, Dialogs, Forms, StdCtrls, ExtCtrls, WinSpool, Printers, Menus, ShellAPI, RichEdit; const MAXCOLS = 20; MAXTABS = 20; {{ this constant can be used to be replaced by the page number in the middle of any text } PAGENUMBER = '<>'; type /// text paragraph alignment TTextAlign = (taLeft,taRight,taCenter,taJustified); /// text column alignment TColAlign = (caLeft,caRight,caCenter, caCurrency); /// text line spacing TLineSpacing = (lsSingle, lsOneAndHalf, lsDouble); /// available zoom mode // - zsPercent is used with a zoom percentage (e.g. 100% or 50%) // - zsPageFit fits the page to the report // - zsPageWidth zooms the page to fit the report width on screen TZoomStatus = (zsPercent, zsPageFit, zsPageWidth); /// Event triggered when a new page is added TNewPageEvent = procedure(Sender: TObject; PageNumber: integer) of object; /// Event triggered when the Zoom was changed TZoomChangedEvent = procedure(Sender: TObject; Zoom: integer; ZoomStatus: TZoomStatus) of object; /// Event triggered to allow custom unicode character display on the screen // - called for all text, whatever the alignment is // - Text content can be modified by this event handler to customize // some characters (e.g. '>=' can be converted to the one Unicode glyph) TOnStringToUnicodeEvent = function(const Text: SynUnicode): SynUnicode of object; /// available known paper size for NewPageLayout() method TGdiPagePaperSize = ( psA4, psA5, psA3, psLetter, psLegal); TGDIPages = class; /// a report layout state, as used by SaveLayout/RestoreSavedLayout methods TSavedState = record FontName: string; FontColor: integer; Flags: integer; LeftMargin: integer; RightMargin: integer; BiDiMode: TBiDiMode; end; /// internal format of the header or footer text THeaderFooter = class public Text: SynUnicode; State: TSavedState; /// initialize the header or footer parameters with current report state constructor Create(Report: TGDIPages; doubleline: boolean; const aText: SynUnicode=''; IsText: boolean=false); end; /// internal format of a text column TColRec = record ColLeft, ColRight: integer; ColAlign: TColAlign; ColBold: boolean; end; TPopupMenuClass = class of TPopupMenu; /// hack the TPaintBox to allow custom background erase TPagePaintBox = class(TPaintBox) private procedure WMEraseBkgnd(var Message: TWmEraseBkgnd); message WM_ERASEBKGND; end; /// internal structure used to store bookmarks or links TGDIPagereference = class public /// the associated page number (starting at 1) Page: Integer; /// graphical coordinates of the hot zone // - for bookmarks, Top is the Y position // - for links, the TRect will describe the hot region // - for Outline, Top is the Y position and Bottom the outline tree level Rect: TRect; /// coordinates on screen of the hot zone Preview: TRect; /// initialize the structure with the current page constructor Create(PageNumber: integer; Left, Top, Right, Bottom: integer); /// compute the coordinates on screen into Preview procedure ToPreview(Pages: TGDIPages); end; /// contains one page TGDIPageContent = object /// SynLZ-compressed content of the page MetaFileCompressed: RawByteString; /// text equivalent of the page Text: string; /// the physical page size SizePx: TPoint; /// margin of the page MarginPx: TRect; /// non printable offset of the page OffsetPx: TPoint; end; /// used to store all pages of the report TGDIPageContentDynArray = array of TGDIPageContent; /// the available menu items TGdiPagePreviewButton = ( rNone, rNextPage, rPreviousPage, rGotoPage, rZoom, rBookmarks, rPageAsText, rPrint, rExportPDF, rClose); /// set of menu items TGdiPagePreviewButtons = set of TGdiPagePreviewButton; /// Report class for generating documents from code // - data is drawn in memory, they displayed or printed as desired // - allow preview and printing, and direct pdf export // - handle bookmark, outlines and links inside the document // - page coordinates are in mm's TGDIPages = class(TScrollBox) protected fPreviewSurface: TPagePaintbox; fCanvas: TMetafileCanvas; fCanvasText: string; fBeforeGroupText: string; fGroupPage: TMetafile; fPages: TGDIPageContentDynArray; fHeaderLines: TObjectList; fFooterLines: TObjectList; fColumns: array of TColRec; fColumnHeaderList: array of record headers: TSynUnicodeDynArray; flags: integer; end; {$ifdef MOUSE_CLICK_PERFORM_ZOOM} fZoomTimer: TTimer; {$endif} fPtrHdl: THandle; fTabCount: integer; fCurrentPrinter: string; fOrientation: TPrinterOrientation; fDefaultLineWidth: integer; //drawing line width (boxes etc) fVirtualPageNum: integer; fCurrPreviewPage: integer; fZoomIn: boolean; fLineHeight: integer; //Text line height fLineSpacing: TLineSpacing; fCurrentYPos: integer; fCurrentTextTop, fCurrentTextPage: integer; fHeaderHeight: integer; fHangIndent: integer; fAlign: TTextAlign; fBiDiMode: TBiDiMode; fPageMarginsPx: TRect; fHasPrinterInstalled: boolean; {$ifdef USEPDFPRINTER} fHasPDFPrinterInstalled: boolean; fPDFPrinterIndex: integer; {$else} fForceJPEGCompression: Integer; fExportPDFApplication: string; fExportPDFAuthor: string; fExportPDFSubject: string; fExportPDFKeywords: string; fExportPDFEmbeddedTTF: boolean; fExportPDFA1: boolean; fExportPDFBackground: TGraphic; {$ifndef NO_USE_UNISCRIBE} fExportPDFUseUniscribe: boolean; {$endif} fExportPDFUseFontFallBack: boolean; fExportPDFFontFallBackName: string; fExportPDFEncryptionLevel: TPdfEncryptionLevel; fExportPDFEncryptionUserPassword: string; fExportPDFEncryptionOwnerPassword: string; fExportPDFEncryptionPermissions: TPdfEncryptionPermissions; fExportPDFGeneratePDF15File: boolean; {$endif} fPrinterPxPerInch: TPoint; fPhysicalSizePx: TPoint; //size of page in printer pixels fPhysicalOffsetPx: TPoint; //size of non-printing margins in pixels fCustomPxPerInch: TPoint; fCustomPageSize: TPoint; fCustomNonPrintableOffset: TPoint; fCustomPageMargins: TRect; fZoom: integer; fZoomStatus: TZoomStatus; fNegsToParenthesesInCurrCols: boolean; fWordWrapLeftCols: boolean; fUseOutlines: boolean; fForceScreenResolution: boolean; fHeaderDone: boolean; fFooterHeight: integer; fFooterGap: integer; fInHeaderOrFooter: boolean; fColumnHeaderPrinted: boolean; fColumnHeaderPrintedAtLeastOnce: boolean; fDrawTextAcrossColsDrawingHeader: boolean; fColumnHeaderInGroup: boolean; fColumnsUsedInGroup: boolean; fGroupVerticalSpace: integer; fGroupVerticalPos: integer; fZoomChangedEvent: TZoomChangedEvent; fPreviewPageChangedEvent: TNotifyEvent; fStartNewPage: TNewPageEvent; fStartPageHeader: TNotifyEvent; fEndPageHeader: TNotifyEvent; fStartPageFooter: TNotifyEvent; fEndPageFooter: TNotifyEvent; fStartColumnHeader: TNotifyEvent; fEndColumnHeader: TNotifyEvent; fSavedCount: integer; fSaved: array of TSavedState; fTab: array of integer; fColumnsWithBottomGrayLine: boolean; fColumnsRowLineHeight: integer; fOnDocumentProducedEvent: TNotifyEvent; PageRightButton, PageLeftButton: TPoint; fPagesToFooterText: string; // not SynUnicode, since calls format() fPagesToFooterAt: TPoint; fPagesToFooterState: TSavedState; fMetaFileForPage: TMetaFile; fCurrentMetaFile: TMetaFile; procedure GetPrinterParams; procedure SetAnyCustomPagePx; function GetPaperSize: TSize; procedure FlushPageContent; function PrinterPxToScreenPxX(PrinterPx: integer): integer; function PrinterPxToScreenPxY(PrinterPx: integer): integer; procedure ResizeAndCenterPaintbox; function GetMetaFileForPage(PageIndex: integer): TMetaFile; procedure SetMetaFileForPage(PageIndex: integer; MetaFile: TMetaFile); function GetOrientation: TPrinterOrientation; procedure SetOrientation(orientation: TPrinterOrientation); procedure SetTextAlign(Value: TTextAlign); procedure SetPage(NewPreviewPage: integer); function GetPageCount: integer; function GetLineHeight: integer; function GetLineHeightMm: integer; procedure CheckYPos; //ie: if not vertical room force new page function GetYPos: integer; procedure SetYPos(YPos: integer); procedure NewPageInternal; virtual; function CreateMetaFile(aWidth, aHeight: integer): TMetaFile; function CreateMetafileCanvas(Page: TMetafile): TMetafileCanvas; procedure UpdateMetafileCanvasFont(aCanvas: TMetafileCanvas); function TextFormatsToFlags: integer; procedure SetFontWithFlags(flags: integer); function GetPageMargins: TRect; procedure SetPageMargins(Rect: TRect); procedure DoHeader; procedure DoFooter; procedure DoHeaderFooterInternal(Lines: TObjectList); procedure CalcFooterGap; function GetColumnCount: integer; function GetColumnRec(col: integer): TColRec; procedure PrintColumnHeaders; procedure SetZoom(zoom: integer); procedure SetZoomStatus(aZoomStatus: TZoomStatus); procedure ZoomTimerInternal(X,Y: integer; ZoomIn: boolean); procedure ZoomTimer(Sender: TObject); procedure LineInternal(start,finish: integer; DoubleLine: boolean); procedure PrintFormattedLine(s: SynUnicode; flags: integer; const aBookmark: string=''; const aLink: string=''; withNewLine: boolean=true); procedure LeftOrJustifiedWrap(const s: SynUnicode; withNewLine: boolean=true); procedure RightOrCenterWrap(const s: SynUnicode); procedure GetTextLimitsPx(var LeftOffset, RightOffset: integer); procedure HandleTabsAndPrint(const leftstring: SynUnicode; var rightstring: SynUnicode; leftOffset, rightOffset: integer); procedure PreviewPaint(Sender: TObject); procedure PreviewMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); procedure PreviewMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); procedure PreviewMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); function GetLeftMargin: integer; procedure SetLeftMargin(const Value: integer); function GetRightMarginPos: integer; function GetSavedState: TSavedState; procedure SetSavedState(const SavedState: TSavedState); /// can be used internaly (for instance by fPagesToFooterState) property SavedState: TSavedState read GetSavedState write SetSavedState; protected fMousePos: TPoint; {$ifndef MOUSE_CLICK_PERFORM_ZOOM} fButtonDown, fButtonDownScroll: TPoint; {$endif} /// Strings[] are the bookmark names, and Objects[] are TGDIPagereference // to get the Y position fBookmarks: TStringList; /// Strings[] are the bookmark names, and Objects[] are TGDIPagereference to // get the hot region fLinks: TStringList; fLinksCurrent: integer; /// Strings[] are the outline titles, and Objects[] are TGDIPagereference // to get the Y position of the destination fOutline: TStringList; fInternalUnicodeString: SynUnicode; fForcedLeftOffset : integer; PreviewForm: TForm; PreviewButtons: array of TButton; PreviewPageCountLabel: TLabel; procedure CMFontChanged(var Msg: TMessage); message CM_FONTCHANGED; procedure WMGetDlgCode(var Message: TWMGetDlgCode); message WM_GETDLGCODE; procedure WMEraseBkgnd(var Message: TWmEraseBkgnd); message WM_ERASEBKGND; procedure KeyDown(var Key: Word; Shift: TShiftState); override; procedure CreateWnd; override; procedure Resize; override; procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override; procedure MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); override; {$IFNDEF VER100} function DoMouseWheel(Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint): Boolean; override; //no mousewheel support in Delphi 3 {$ENDIF} procedure PopupMenuPopup(Sender: TObject); procedure CheckHeaderDone; virtual; // warning: PW buffer is overwritten at the next method call procedure InternalUnicodeString(const s: SynUnicode; var PW: PWideChar; var PWLen: integer; size: PSize); public /// Event triggered when the ReportPopupMenu is displayed // - default handling (i.e. leave this field nil) is to add Page naviguation // - you can override this method for adding items to the ReportPopupMenu OnPopupMenuPopup: TNotifyEvent; /// Event triggered when a ReportPopupMenu item is selected // - default handling (i.e. leave this field nil) is for Page navigation // - you can override this method for handling additionnal items to the menu // - the Tag component of the custom TMenuItem should be 0 or greater than // Report pages count: use 1000 as a start for custom TMenuItem.Tag values OnPopupMenuClick: TNotifyEvent; /// user can customize this class to create an advanced popup menu instance PopupMenuClass: TPopupMenuClass; /// the title of the report // - used for the preview caption form // - used for the printing document name Caption: string; /// if true, the PrintPages() method will use a temporary bitmap for printing // - some printer device drivers have problems with printing metafiles // which contains other metafiles; should have been fixed // - not useful, since slows the printing a lot and makes huge memory usage ForcePrintAsBitmap: boolean; /// if true the preview will not use GDI+ library to draw anti-aliaised graphics // - this may be slow on old computers, so caller can disable it on demand ForceNoAntiAliased: boolean; /// if true, drawing will NOT to use native GDI+ 1.1 conversion // - we found out that GDI+ 1.1 was not as good as our internal conversion // function written in Delphi, e.g. for underlined fonts // - so this property is set to true by default for proper display on screen // - will only be used if ForceNoAntiAliased is false, of course ForceInternalAntiAliased: boolean; /// if true, internal text drawing will use a font-fallback mechanism // for characters not existing within the current font (just as with GDI) // - is disabled by default, but could be set to TRUE to force enabling // TGDIPlusFull.ForceUseDrawString property ForceInternalAntiAliasedFontFallBack: boolean; {$ifdef PRINTERNEW} // the PrintPages() will use this parameter to force black and white, or // color mode, whatever the global printer setting is ForcePrintColorMode: (printColorDefault, printBW, printColor); // the PrintPages() will use this parameter to force duplex mode, // whatever the global printer setting is ForcePrintDuplexMode: (printDuplexDefault, printSimplex, printDuplex); {$endif} /// if true, the headers are copied only once to the text ForceCopyTextAsWholeContent: boolean; /// customize text conversion before drawing // - Text content can be modified by this event handler to customize // some characters (e.g. '>=' can be converted to its Unicode glyph) OnStringToUnicode: TOnStringToUnicodeEvent; /// set group page fill method // - if set to true, the groups will be forced to be placed on the same page // (this was the original default "Pages" component behavior, but this // is not usual in page composition, so is disabled by default in TGDIPages) // - if set to false, the groups will force a page feed if there is not // enough place for 20 lines on the current page (default behavior) GroupsMustBeOnSamePage: boolean; /// the bitmap used to draw the page PreviewSurfaceBitmap: TBitmap; /// creates the reporting component constructor Create(AOwner: TComponent); override; /// finalize the component, releasing all used memory destructor Destroy; override; /// customized invalidate procedure Invalidate; override; /// Begin a Report document // - Every report must start with BeginDoc and end with EndDoc // - note that Printers.SetPrinter() should be set BEFORE calling BeginDoc, // otherwise you may have a "canvas does not allow drawing" error procedure BeginDoc; /// Clear the current Report document procedure Clear; virtual; /// draw some text as a paragraph, with the current alignment // - this method does all word-wrapping and formating if necessary // - this method handle multiple paragraphs inside s (separated by newlines - // i.e. #13) // - by default, will write a paragraph, unless withNewLine is set to FALSE, // so that the next DrawText() will continue drawing at the current position procedure DrawText(const s: string; withNewLine: boolean=true); {$ifdef HASINLINE}inline;{$endif} /// draw some UTF-8 text as a paragraph, with the current alignment // - this method does all word-wrapping and formating if necessary // - this method handle multiple paragraphs inside s (separated by newlines - // i.e. #13) // - by default, will write a paragraph, unless withNewLine is set to FALSE, // so that the next DrawText() will continue drawing at the current position procedure DrawTextU(const s: RawUTF8; withNewLine: boolean=true); {$ifdef HASINLINE}inline;{$endif} /// draw some Unicode text as a paragraph, with the current alignment // - this method does all word-wrapping and formating if necessary // - this method handle multiple paragraphs inside s (separated by newlines - // i.e. #13) // - by default, will write a paragraph, unless withNewLine is set to FALSE, // so that the next DrawText() will continue drawing at the current position procedure DrawTextW(const s: SynUnicode; withNewLine: boolean=true); /// draw some text as a paragraph, with the current alignment // - this method use format() like parameterss procedure DrawTextFmt(const s: string; const Args: array of const; withNewLine: boolean=true); /// get the formating flags associated to a Title function TitleFlags: integer; /// draw some text as a paragraph title // - the outline level can be specified, if UseOutline property is enabled // - if aBookmark is set, a bookmark is created at this position // - if aLink is set, a link to the specified bookmark name (in aLink) is made procedure DrawTitle(const s: SynUnicode; DrawBottomLine: boolean=false; OutlineLevel: Integer=0; const aBookmark: string=''; const aLink: string=''); /// draw one line of text, with the current alignment procedure DrawTextAt(s: SynUnicode; XPos: integer; const aLink: string=''; CheckPageNumber: boolean=false); /// draw one line of text, with a specified Angle and X Position procedure DrawAngledTextAt(const s: SynUnicode; XPos, Angle: integer); /// draw a square box at the given coordinates procedure DrawBox(left,top,right,bottom: integer); /// draw a filled square box at the given coordinates procedure DrawBoxFilled(left,top,right,bottom: integer; Color: TColor); /// Stretch draws a bitmap image at the specified page coordinates in mm's procedure DrawBMP(rec: TRect; bmp: TBitmap); overload; /// add the bitmap at the specified X position // - if there is not enough place to draw the bitmap, go to next page // - then the current Y position is updated // - bLeft (in mm) is calculated in reference to the LeftMargin position // - if bLeft is maxInt, the bitmap is centered to the page width // - bitmap is stretched (keeping aspect ratio) for the resulting width to // match the bWidth parameter (in mm) procedure DrawBMP(bmp: TBitmap; bLeft, bWidth: integer; const Legend: string=''); overload; /// Stretch draws a metafile image at the specified page coordinates in mm's procedure DrawMeta(rec: TRect; meta: TMetafile); /// add the graphic (bitmap or metafile) at the specified X position // - handle only TBitmap and TMetafile kind of TGraphic // - if there is not enough place to draw the bitmap, go to next page // - then the current Y position is updated // - bLeft (in mm) is calculated in reference to the LeftMargin position // - if bLeft is maxInt, the bitmap is centered to the page width // - bitmap is stretched (keeping aspect ratio) for the resulting width to // match the bWidth parameter (in mm) procedure DrawGraphic(graph: TGraphic; bLeft, bWidth: integer; const Legend: SynUnicode=''); /// draw an Arrow procedure DrawArrow(Point1, Point2: TPoint; HeadSize: integer; SolidHead: boolean); /// draw a Line, either simple or double, between the left & right margins procedure DrawLine(doubleline: boolean=false); /// draw a Dashed Line between the left & right margins procedure DrawDashedLine; /// append a Rich Edit content to the current report // - note that if you want the TRichEdit component to handle more than 64 KB // of RTF content, you have to set its MaxLength property as expected (this // is a limitation of the VCL, not of this method) // - you can specify optionally a pointer to a TIntegerDynArray variable, // which will be filled with the position of each page last char: it may // be handy e.g. to add some cross-reference table about the rendered content procedure AppendRichEdit(RichEditHandle: HWnd; EndOfPagePositions: PIntegerDynArray=nil); /// jump some line space between paragraphs // - Increments the current Y Position the equivalent of a single line // relative to the current font height and line spacing procedure NewLine; /// jump some half line space between paragraphs // - Increments the current Y Position the equivalent of an half single line // relative to the current font height and line spacing procedure NewHalfLine; /// jump some line space between paragraphs // - Increments the current Y Position the equivalent of 'count' lines // relative to the current font height and line spacing procedure NewLines(count: integer); /// save the current font and alignment procedure SaveLayout; virtual; /// restore last saved font and alignment procedure RestoreSavedLayout; virtual; /// jump to next page, i.e. force a page break procedure NewPage(ForceEndGroup: boolean=false); /// jump to next page, but only if some content is pending procedure NewPageIfAnyContent; /// change the page layout for the upcoming page // - will then force a page break by a call to NewPage(true) method // - can change the default margin if margin*>=0 // - can change the default non-printable printer margin if nonPrintable*>=0 procedure NewPageLayout(sizeWidthMM, sizeHeightMM: integer; nonPrintableWidthMM: integer=-1; nonPrintableHeightMM: integer=-1); overload; /// change the page layout for the upcoming page // - will then force a page break by a call to NewPage(true) method // - can change the default margin if margin*>=0 // - can change the default non-printable printer margin if nonPrintable*>=0 procedure NewPageLayout(paperSize: TGdiPagePaperSize; orientation: TPrinterOrientation=poPortrait; nonPrintableWidthMM: integer=-1; nonPrintableHeightMM: integer=-1); overload; /// begin a Group: stops the contents from being split across pages // - BeginGroup-EndGroup text blocks can't be nested procedure BeginGroup; /// end a previously defined Group // - BeginGroup-EndGroup text blocks can't be nested procedure EndGroup; /// End the Report document // - Every report must start with BeginDoc and end with EndDoc procedure EndDoc; /// Print the selected pages to the default printer of Printer unit // - if PrintFrom=0 and PrintTo=0, then all pages are printed // - if PrintFrom=-1 or PrintTo=-1, then a printer dialog is displayed function PrintPages(PrintFrom, PrintTo: integer): boolean; /// export the current report as PDF file {$ifdef USEPDFPRINTER} // - uses an external 'PDF' printer {$else} // - uses internal PDF code, from Synopse PDF engine (handle bookmarks, // outline and twin bitmaps) - in this case, a file name can be set {$endif} function ExportPDF(aPdfFileName: TFileName; ShowErrorOnScreen: boolean; LaunchAfter: boolean=true): boolean; {$ifndef USEPDFPRINTER} /// export the current report as PDF in a specified stream // - uses internal PDF code, from Synopse PDF engine (handle bookmarks, // outline and twin bitmaps) - in this case, a file name can be set function ExportPDFStream(aDest: TStream): boolean; {$endif} /// show a form with the preview, allowing the user to browse pages and // print the report // - you can customize the buttons and popup menu actions displayed on // the screen - by default, all buttons are visible procedure ShowPreviewForm(VisibleButtons: TGdiPagePreviewButtons = [rNextPage..High(TGdiPagePreviewButton)]); /// set the Tabs stops on every line // - if one value is provided, it will set the Tabs as every multiple of it // - if more than one value are provided, they will be the exact Tabs positions procedure SetTabStops(const tabs: array of integer); /// returns true if there is enough space in the current Report for Count lines // - Used to check if there's sufficient vertical space remaining on the page // for the specified number of lines based on the current Y position function HasSpaceForLines(Count: integer): boolean; /// returns true if there is enough space in the current Report for a // vertical size, specified in mm function HasSpaceFor(mm: integer): boolean; /// Clear all already predefined Headers procedure ClearHeaders; /// Adds either a single line or a double line (drawn between the left & // right page margins) to the page header procedure AddLineToHeader(doubleline: boolean); /// Adds text using to current font and alignment to the page header procedure AddTextToHeader(const s: SynUnicode); /// Adds text to the page header at the specified horizontal position and // using to current font. // - No Line feed will be triggered: this method doesn't increment the YPos, // so can be used to add multiple text on the same line // - if XPos=-1, will put the text at the current right margin procedure AddTextToHeaderAt(const s: SynUnicode; XPos: integer); /// Clear all already predefined Footers procedure ClearFooters; /// Adds either a single line or a double line (drawn between the left & // right page margins) to the page footer procedure AddLineToFooter(doubleline: boolean); /// Adds text using to current font and alignment to the page footer procedure AddTextToFooter(const s: SynUnicode); /// Adds text to the page footer at the specified horizontal position and // using to current font. No Line feed will be triggered. // - if XPos=-1, will put the text at the current right margin procedure AddTextToFooterAt(const s: SynUnicode; XPos: integer); /// Will add the current 'Page n/n' text at the specified position // - PageText must be of format 'Page %d/%d', in the desired language // - if XPos=-1, will put the text at the current right margin // - if the vertical position does not fit your need, you could set // YPosMultiplier to a value which will be multipled by fFooterHeight to // compute the YPos procedure AddPagesToFooterAt(const PageText: string; XPos: integer; YPosMultiplier: integer=1); /// register a column, with proper alignment procedure AddColumn(left, right: integer; align: TColAlign; bold: boolean); /// register same alignement columns, with percentage of page column width // - sum of all percent width should be 100, but can be of any value // - negative widths are converted into absolute values, but // corresponding alignment is set to right // - if a column need to be right aligned or currency aligned, // use SetColumnAlign() method below // - individual column may be printed in bold with SetColumnBold() method procedure AddColumns(const PercentWidth: array of integer; align: TColAlign=caLeft); /// register some column headers, with the current font formating // - Column headers will appear just above the first text output in // columns on each page // - you can call this method several times in order to have diverse // font formats across the column headers procedure AddColumnHeaders(const headers: array of SynUnicode; WithBottomGrayLine: boolean=false; BoldFont: boolean=false; RowLineHeight: integer=0; flags: integer=0); /// register some column headers, with the current font formating // - Column headers will appear just above the first text output in // columns on each page // - call this method once with all columns text as CSV procedure AddColumnHeadersFromCSV(var CSV: PWideChar; WithBottomGrayLine: boolean; BoldFont: boolean=false; RowLineHeight: integer=0); /// draw some text, split across every columns // - if BackgroundColor is not clNone (i.e. clRed or clNavy or clBlack), the // row is printed on white with this background color (e.g. to highlight errors) procedure DrawTextAcrossCols(const StringArray: array of SynUnicode; BackgroundColor: TColor=clNone); overload; /// draw some text, split across every columns // - you can specify an optional bookmark name to be used to link a column // content via a AddLink() call // - if BackgroundColor is not clNone (i.e. clRed or clNavy or clBlack), the // row is printed on white with this background color (e.g. to highlight errors) procedure DrawTextAcrossCols(const StringArray, LinkArray: array of SynUnicode; BackgroundColor: TColor=clNone); overload; /// draw some text, split across every columns // - this method expect the text to be separated by commas // - if BackgroundColor is not clNone (i.e. clRed or clNavy or clBlack), the // row is printed on white with this background color (e.g. to highlight errors) procedure DrawTextAcrossColsFromCSV(var CSV: PWideChar; BackgroundColor: TColor=clNone); /// draw (double if specified) lines at the bottom of all currency columns procedure DrawLinesInCurrencyCols(doublelines: boolean); /// retrieve the current Column count property ColumnCount: integer read GetColumnCount; /// retrieve the attributes of a specified column function GetColumnInfo(index: integer): TColRec; /// individually set column alignment // - useful after habing used AddColumns([]) method e.g. procedure SetColumnAlign(index: integer; align: TColAlign); /// individually set column bold state // - useful after habing used AddColumns([]) method e.g. procedure SetColumnBold(index: integer); /// erase all columns and the associated headers procedure ClearColumns; /// clear the Headers associated to the Columns procedure ClearColumnHeaders; /// ColumnHeadersNeeded will force column headers to be drawn again just // prior to printing the next row of columned text // - Usually column headers are drawn once per page just above the first // column. ColumnHeadersNeeded is useful where columns of text have been // separated by a number of lines of non-columned text procedure ColumnHeadersNeeded; /// create a bookmark entry at the current position of the current page // - return false if this bookmark name was already existing, true on success // - if aYPosition is not 0, the current Y position will be used function AddBookMark(const aBookmarkName: string; aYPosition: integer=0): Boolean; virtual; /// go to the specified bookmark // - returns true if the bookmark name was existing and reached function GotoBookmark(const aBookmarkName: string): Boolean; virtual; /// create an outline entry at the current position of the current page // - if aYPosition is not 0, the current Y position will be used procedure AddOutline(const aTitle: string; aLevel: Integer; aYPosition: integer=0; aPageNumber: integer=0); virtual; /// create a link entry at the specified coordinates of the current page // - coordinates are specified in mm // - the bookmark name is not checked by this method: a bookmark can be // linked before being marked in the document procedure AddLink(const aBookmarkName: string; aRect: TRect; aPageNumber: integer=0); virtual; /// convert a rect of mm into pixel canvas units function MmToPrinter(const R: TRect): TRect; /// convert a rect of pixel canvas units into mm function PrinterToMM(const R: TRect): TRect; /// convert a mm X position into pixel canvas units function MmToPrinterPxX(mm: integer): integer; /// convert a mm Y position into pixel canvas units function MmToPrinterPxY(mm: integer): integer; /// convert a pixel canvas X position into mm function PrinterPxToMmX(px: integer): integer; /// convert a pixel canvas Y position into mm function PrinterPxToMmY(px: integer): integer; /// return the width of the specified text, in mm function TextWidth(const Text: SynUnicode): integer; /// the current Text Alignment, during text adding property TextAlign: TTextAlign read fAlign write SetTextAlign; /// specifies the reading order (bidirectional mode) of the box // - only bdLeftToRight and bdRightToLeft are handled // - this will be used by DrawText[At], DrawTitle, AddTextToHeader/Footer[At], // DrawTextAcrossCols, SaveLayout/RestoreSavedLayout methods property BiDiMode: TBiDiMode read fBiDiMode write fBiDiMode; /// create a meta file and its associated canvas for displaying a picture // - you must release manually both Objects after usage function CreatePictureMetaFile(Width, Height: integer; out MetaCanvas: TCanvas): TMetaFile; /// Distance (in mm's) from the top of the page to the top of the current group // - returns CurrentYPos if no group is in use function CurrentGroupPosStart: integer; /// go to the specified Y position on a given page // - used e.g. by GotoBookmark() method procedure GotoPosition(aPage: integer; aYPos: integer); /// access to all pages content // - numerotation begin with Pages[0] for page 1 // - the Pages[] property should be rarely needed property Pages: TGDIPageContentDynArray read fPages; /// add an item to the popup menu // - used mostly internaly to add page browsing // - default OnClick event is to go to page set by the Tag property function NewPopupMenuItem(const aCaption: string; Tag: integer=0; SubMenu: TMenuItem=nil; OnClick: TNotifyEvent=nil; ImageIndex: integer=-1): TMenuItem; /// this is the main popup menu item click event procedure PopupMenuItemClick(Sender: TObject); /// can be used to draw directly using GDI commands // - The Canvas property should be rarely needed property Canvas: TMetaFileCanvas read fCanvas; /// Distance (in mm's) from the top of the page to the top of the next line property CurrentYPos: integer read GetYPos write SetYPos; /// get current line height (mm) property LineHeight: integer read GetLineHeightMm; /// the name of the current selected printer // - note that Printers.SetPrinter() should be set BEFORE calling BeginDoc, // otherwise you may have a "canvas does not allow drawing" error property PrinterName: string read fCurrentPrinter; /// the index of the previewed page // - please note that the first page is 1 (not 0) property Page: integer read fCurrPreviewPage write SetPage; /// total number of pages property PageCount: integer read GetPageCount; /// Size of each margin relative to its corresponding edge in mm's property PageMargins: TRect read GetPageMargins write SetPageMargins; /// Size of the left margin relative to its corresponding edge in mm's property LeftMargin: integer read GetLeftMargin write SetLeftMargin; /// Position of the right margin, in mm property RightMarginPos: integer read GetRightMarginPos; /// get the current selected paper size, in mm's property PaperSize: TSize read GetPaperSize; /// number of pixel per inch, for X and Y directions property PrinterPxPerInch: TPoint read fPrinterPxPerInch; {$ifdef USEPDFPRINTER} /// true if any printer appears to be a PDF printer property HasPDFPrinterInstalled: boolean read fHasPDFPrinterInstalled; {$else} /// this property can force saving all bitmaps as JPEG in exported PDF // - by default, this property is set to 0 by the constructor of this class, // meaning that the JPEG compression is not forced, and the engine will use // the native resolution of the bitmap - in this case, the resulting // PDF file content will be bigger in size (e.g. use this for printing) // - 60 is the prefered way e.g. for publishing PDF over the internet // - 80/90 is a good ration if you want to have a nice PDF to see on screen // - of course, this doesn't affect vectorial (i.e. emf) pictures property ExportPDFForceJPEGCompression: integer read fForceJPEGCompression write fForceJPEGCompression; /// optional application name used during Export to PDF // - if not set, global Application.Title will be used property ExportPDFApplication: string read fExportPDFApplication write fExportPDFApplication; /// optional Author name used during Export to PDF property ExportPDFAuthor: string read fExportPDFAuthor write fExportPDFAuthor; /// optional Subject text used during Export to PDF property ExportPDFSubject: string read fExportPDFSubject write fExportPDFSubject; /// optional Keywords name used during Export to PDF property ExportPDFKeywords: string read fExportPDFKeywords write fExportPDFKeywords; /// if set to TRUE, the used True Type fonts will be embedded to the exported PDF // - not set by default, to save disk space and produce tiny PDF property ExportPDFEmbeddedTTF: boolean read fExportPDFEmbeddedTTF write fExportPDFEmbeddedTTF; /// if set to TRUE, the exported PDF is made compatible with PDF/A-1 requirements property ExportPDFA1: Boolean read fExportPDFA1 write fExportPDFA1; /// an optional background image, to be exported on every pdf page // - note that no private copy of the TGraphic instance is made: the caller // has to manage it, and free it after the pdf is generated property ExportPDFBackground: TGraphic read fExportPDFBackground write fExportPDFBackground; {$ifndef NO_USE_UNISCRIBE} /// set if the exporting PDF engine must use the Windows Uniscribe API to // render Ordering and/or Shaping of the text // - useful for Hebrew, Arabic and some Asiatic languages handling // - set to FALSE by default, for faster content generation property ExportPDFUseUniscribe: boolean read fExportPDFUseUniscribe write fExportPDFUseUniscribe; {$endif} /// used to define if the exported PDF document will handle "font fallback" for // characters not existing in the current font: it will avoid rendering // block/square symbols instead of the correct characters (e.g. for Chinese text) // - will use the font specified by FontFallBackName property to add any // Unicode glyph not existing in the currently selected font // - default value is TRUE property ExportPDFUseFontFallBack: boolean read fExportPDFUseFontFallBack write fExportPDFUseFontFallBack; /// set the font name to be used for missing characters in exported PDF document // - used only if UseFontFallBack is TRUE // - default value is 'Arial Unicode MS', if existing property ExportPDFFontFallBackName: string read fExportPDFFontFallBackName write fExportPDFFontFallBackName; /// set encryption level to be used in exporting PDF document property ExportPDFEncryptionLevel: TPdfEncryptionLevel read fExportPDFEncryptionLevel write fExportPDFEncryptionLevel; /// set encryption user password to be used in exporting PDF document // - leave it to '' unless you want the user to be asked for this password // at document opening // - ExportPDFEncryptionLevel = elRC4_40/elRC4_128 expects only ASCII-7 chars property ExportPDFEncryptionUserPassword: string read fExportPDFEncryptionUserPassword write fExportPDFEncryptionUserPassword; /// set encryption owner password to be used in exporting PDF document // - it is mandatory to set it to a non void value - by default, is set to // 'SynopsePDFEngine' by should be overridden for security // - ExportPDFEncryptionLevel = elRC4_40/elRC4_128 expects only ASCII-7 chars property ExportPDFEncryptionOwnerPassword: string read fExportPDFEncryptionOwnerPassword write fExportPDFEncryptionOwnerPassword; /// set encryption Permissions to be used in exporting PDF document // - can be either one of the PDF_PERMISSION_ALL / PDF_PERMISSION_NOMODIF / // PDF_PERSMISSION_NOPRINT / PDF_PERMISSION_NOCOPY / // PDF_PERMISSION_NOCOPYNORPRINT set of options // - default value is PDF_PERMISSION_ALL (i.e. no restriction) property ExportPDFEncryptionPermissions: TPdfEncryptionPermissions read fExportPDFEncryptionPermissions write fExportPDFEncryptionPermissions; /// set to TRUE to export in PDF 1.5 format, which may produce smaller files property ExportPDFGeneratePDF15File: Boolean read fExportPDFGeneratePDF15File write fExportPDFGeneratePDF15File; {$endif} /// the current page number, during text adding // - Page is used during preview, after text adding property VirtualPageNum: integer read fVirtualPageNum write fVirtualPageNum; /// true if any header as been drawn, that is if something is to be printed property HeaderDone: boolean read fHeaderDone; { /// used to set if columns must be delimited at their bottom with a gray line property ColumnsWithBottomGrayLine: boolean read fColumnsWithBottomGrayLine write fColumnsWithBottomGrayLine; } published /// accounting standard layout for caCurrency columns: // - convert all negative sign into parentheses // - using parentheses instead of negative numbers is used in financial // statement reporting (see e.g. http://en.wikipedia.org/wiki/Income_statement) // - align numbers on digits, not parentheses property NegsToParenthesesInCurrCols: boolean read fNegsToParenthesesInCurrCols write fNegsToParenthesesInCurrCols; /// word wrap (caLeft) left-aligned columns into multiple lines // - if the text is wider than the column width, its content // is wrapped to the next line // - if the text contains some #13/#10 characters, it will be splitted into // individual lines // - this is disabled by default property WordWrapLeftCols: boolean read fWordWrapLeftCols write fWordWrapLeftCols; /// if set, any DrawTitle() call will create an Outline entry // - used e.g. for PDF generation // - this is enabled by default property UseOutlines: boolean read fUseOutlines write fUseOutlines; /// left justification hang indentation property HangIndent: integer read fHangIndent write fHangIndent; /// Line spacing: can be lsSingle, lsOneAndHalf or lsDouble property LineSpacing: TLineSpacing read fLineSpacing write fLineSpacing; /// the paper orientation property Orientation: TPrinterOrientation read GetOrientation write SetOrientation; /// the current Zoom value, according to the zoom status // - you can use PAGE_WIDTH and PAGE_FIT constants to force the corresponding // zooming mode (similar to ZoomStatus property setter) // - set this property will work only when the report is already shown // in preview mode, not before ShowPreviewForm method call property Zoom: integer read fZoom write SetZoom; /// the current Zoom procedure, i.e. zsPercent, zsPageFit or zsPageWidth // - set this property will define the Zoom at PAGE_WIDTH or PAGE_FIT // special constant, if needed // - set this property will work only when the report is already shown // in preview mode, not before ShowPreviewForm method call property ZoomStatus: TZoomStatus read fZoomStatus write SetZoomStatus; /// if set to true, we reduce the precision for better screen display property ForceScreenResolution: boolean read fForceScreenResolution write fForceScreenResolution; /// Event triggered when each new page is created property OnNewPage: TNewPageEvent read fStartNewPage write fStartNewPage; /// Event triggered when each new header is about to be drawn property OnStartPageHeader: TNotifyEvent read fStartPageHeader write fStartPageHeader; /// Event triggered when each header was drawn property OnEndPageHeader: TNotifyEvent read fEndPageHeader write fEndPageHeader; /// Event triggered when each new footer is about to be drawn property OnStartPageFooter: TNotifyEvent read fStartPageFooter write fStartPageFooter; /// Event triggered when each footer was drawn property OnEndPageFooter: TNotifyEvent read fEndPageFooter write fEndPageFooter; /// Event triggered when each new column is about to be drawn property OnStartColumnHeader: TNotifyEvent read fStartColumnHeader write fStartColumnHeader; /// Event triggered when each column was drawn property OnEndColumnHeader: TNotifyEvent read fEndColumnHeader write fEndColumnHeader; /// Event triggered whenever the report document generation is done // - i.e. when the EndDoc method has just been called property OnDocumentProduced: TNotifyEvent read fOnDocumentProducedEvent write fOnDocumentProducedEvent; /// Event triggered whenever the current preview page is changed property OnPreviewPageChanged: TNotifyEvent read fPreviewPageChangedEvent write fPreviewPageChangedEvent; /// Event triggered whenever the preview page is zoomed in or out property OnZoomChanged: TZoomChangedEvent read fZoomChangedEvent write fZoomChangedEvent; end; {$ifdef RENDERPAGES} TRenderPages = class; /// a TRenderPages additional layout state // - used by the overridden SaveLayout/RestoreSavedLayout methods TSavedStateRender = record FirstLineIndent: Integer; Before: Integer; After: Integer; RightIndent: Integer; LeftIndent: Integer; end; PRenderBoxWord = ^TRenderBoxWord; /// the internal "Word" box structure used by TRenderBox TRenderBoxWord = packed record /// offset in the fText[] array TextOffset: integer; /// PWideChar count starting from fText[TextOffset] TextLength: integer; /// size on the canvas Size: TSize; /// used to retrieve associated font attributes FontIndex: integer; /// space width from current font attribute FontSpaceWidth: integer; /// number of spaces at the right side of this "Word" box SpaceAfterCount: integer; /// associated link bookmark name // - from fLinksBookMarkName[LinkNumber-1], no link set for 0 LinkNumber: integer; end; PRenderBoxLayout = ^TRenderBoxLayout; /// the internal "drawing" box structure used by TRenderBox // - TRenderBox.InternalRender populate fLayout[] with this structures, // ready to be drawn to the document Canvas TRenderBoxLayout = packed record /// pointer of the words in the fText[] array Text: PWideChar; /// number of PWideChar starting at Text^ Length: integer; /// layout box X coordinate Left: integer; /// layout box Y coordinate Top: integer; /// layout box width (in pixels) Width: integer; /// layout box height (in pixels) - that is, the line height Height: integer; /// corresponding rendered line index (starting at 0) LineIndex: integer; /// used to retrieve associated font attributes and links e.g. LastBox: PRenderBoxWord; /// length of extra space, in pixels - as used by SetTextJustification() BreakExtra: integer; /// count of space characters in line of text - as used by SetTextJustification() BreakCount: integer; end; /// used to render a "box" of text // - will handle word adding, and formatting for a given width // - is used by TRenderPage for a whole paragraph, or a column inside a table TRenderBox = class protected fBiDiMode: TBiDiMode; fWidth: integer; fHeight: integer; /// an internal buffer containing the Unicode text of this box fText: array of WideChar; fTextLen: integer; /// word markers of the current text fBox: array of TRenderBoxWord; fBoxCount: integer; /// InternalRender will fill this ready to be rendered layout array fLayout: array of TRenderBoxLayout; fLayoutCount: integer; fOwner: TRenderPages; fOwnerFont: TFont; /// associated links: none set for 0, otherwise fLinksBookMarkName[number-1] fLinksBookMarkNameCurrent: integer; fLinksBookMarkName: array of string; /// populate fLayout[] from fBox[] and calculate fHeight procedure InternalRender; function GetHeight: integer; procedure Clear; public /// initialize the rendering "box" constructor Create(Owner: TRenderPages); /// add some text at the current position // - the text is converted to Unicode before adding (calling // Owner.OnStringToUnicode if was defined) // - the current Owner Font settings are used for the rendering // - warning: this method won't handle control chars (like #13 or #10), but // will replace them with a space: it's about the caller to procedure AddText(const s: string); overload; /// add some text at the current position // - the current Owner Font settings are used for the rendering // - warning: this method won't handle control chars (like #13 or #10), but // will replace them with a space: it's about the caller to procedure AddText(PW: PWideChar; PWLen: integer); overload; /// format the already inserted text into the TRenderPages owner // - this TRenderBox text content will be cleared at the end of this method // - you don't have to call it usualy: use Owner.RdrParagraph instead // - by default, will render top aligned to the X=Left/Y=Top pixels position // - for vertical alignment, specify an height in ForcedHeightBottomCentered // then will be centered if ForcedAtBottom=false, or bottom aligned if true // - if CurrentPageOnly is true, will only flush the content which will fit on // the current page - the fLayout[] array will contain remaining boxes; // - if CurrentPageOnly is false, this will flush all content to multiple pages procedure Flush(Left, Top: Integer; CurrentPageOnly: boolean; ForcedHeightBottomCentered: Integer; ForcedAtBottom: boolean); /// render the text paragraph, but go to the next line // - similar to the
HTML tag or the \line RTF command procedure NewLine; /// mark that an hyperlink must begin at the current position // - use e.g. RdrAddText method to add some text for the link // - will cancel any previous LinkBegin with no LinkEnd: i.e. no nested // links are handled yet (how would want it anyway, in the HTML world?) procedure LinkBegin(const aBookmarkName: string); /// mark that an hyperlink must begin at the current position // - use e.g. RdrAddText method to add some text for the link // - return false on error (e.g. no hyperlink previously opened via LinkBegin) function LinkEnd: boolean; /// reset font (character) formatting properties to a default value // - default value have been set by RdrSetCurrentStateAsDefault // - if no previous call to RdrSetCurrentStateAsDefault has been made, // the font is reset to a 12 point, with no bold/italic/underline attributes // - similar to the \plain RTF command procedure Plain; {$ifdef HASINLINE}inline;{$endif} /// reset paragraph formatting properties to a default value // - similar to the \pard RTF command procedure Pard; {$ifdef HASINLINE}inline;{$endif} /// reset both paragraph and font formatting properties to a default value // - similar to the \pard\plain RTF command procedure PardPlain; {$ifdef HASINLINE}inline;{$endif} /// shortcut to the owner TRenderPages property Owner: TRenderPages read fOwner; /// shortcut to the owner TRenderPages.Font property Font: TFont read fOwnerFont; /// specifies the reading order (bidirectional mode) of the box // - only bdLeftToRight and bdRightToLeft are handled property BiDiMode: TBiDiMode read FBiDiMode write FBiDiMode; /// current width of the "box", in pixels // - must be set before any call to InternalRender property Width: integer read fWidth write fWidth; /// current resulting height of the "box", in pixels // - will be calculated from current text if necessary property Height: integer read GetHeight; end; /// Report class specified in high-quality document rendering // - this class add some methods for creating a document at the character // level (whereas standard TGDIPages allows reporting at paragraph level) // - can be used e.g. to render some RTF-like content // - column handling is much more sophisticated than AddColumn*() methods // - uses the Windows Uniscribe API to handle right-to-left scripting and // process complex scripts (like Arabic) // - uses internaly some TeX-like algorithms like widows and orphans, and // an optional external hyphenation engine (like our hyphen unit) TRenderPages = class(TGDIPages) protected fParagraphFirstLineIndent: Integer; fParagraphBefore: Integer; fParagraphAfter: Integer; fParagraphRightIndent: Integer; fParagraphLeftIndent: Integer; fSavedRender: array of TSavedStateRender; fDefaultState: TSavedState; fDefaultStateRender: TSavedStateRender; fRdr: TRenderBox; fRdrCol: TObjectList; /// an array of TFont, used as cache fFontCache: TObjectList; fFontCacheSpace: array of TSize; procedure RdrPard; procedure RdrPardPlain; procedure RdrPlain; function GetCurrentFontCacheIndex: integer; function GetCurrentFontCacheIndexAndSelect: integer; function GetSavedRender: TSavedStateRender; procedure SetSavedRender(const State: TSavedStateRender); /// will close any pending paragraph (\page makes an implicit \par) procedure NewPageInternal; override; public /// will set the current Font and Paragraph properties to be used as default // - will be used by RdrPlain and RdrPard methods procedure RdrSetCurrentStateAsDefault; /// render the text paragraph, and begin a new one // - write the paragraph text as specified by all previous calls to the // Rdr TRenderBox methods, and begin a new paragraph, using a cleaned // TRenderBox instance // - will use the current TextAlign property value, and the current value // of all Paragraph* properties of this class // - similar to the

HTML tag or the \par RTF command procedure RdrParagraph; /// create a new table at the current position // - return false on error (e.g. a table was opened but not yet ended) function RdrTableBegin(const PercentWidth: array of integer): Boolean; /// get a particular column // - return the 'box' handling the layout of the column: use its // AddText/NewLine/Link*/Plain/Pard methods methods to add some formatted text function RdrTableColumn(aColumnIndex: Integer): TRenderBox; {$ifdef HASINLINE}inline;{$endif} /// end a previously opened table // - will draw all columns to the documents // - return false on error (e.g. a table was not opened) function RdrTableEnd: Boolean; /// the main paragraph 'box' of the document // - its AddText/NewLine/Link*/Plain/Pard methods methods to add some // formatted text // - the paragraph will be flushed to the main document with the RdrParagraph // method will be called property Rdr: TRenderBox read fRdr; public { some overridden methods } /// creates the reporting component constructor Create(AOwner: TComponent); override; /// finalize the component, releasing all used memory and associated TRenderBox destructor Destroy; override; /// Clear the current Report document procedure Clear; override; /// save the current font and alignment // - similar to a { character in some RTF content // - this version will save also Paragraph* properties values procedure SaveLayout; override; /// restore last saved font and alignment // - similar to a } character in some RTF content // - this version will restore also Paragraph* properties values procedure RestoreSavedLayout; override; public /// current paragraph "space before" spacing (in mm, the default is 0) property ParagraphBefore: Integer read fParagraphBefore write fParagraphBefore; /// current paragraph "space after" spacing (in mm, the default is 0) property ParagraphAfter: Integer read fParagraphAfter write fParagraphAfter; /// current paragraph first-line indent (in mm, the default is 0) property ParagraphFirstLineIndent: Integer read fParagraphFirstLineIndent write fParagraphFirstLineIndent; /// current paragraph left indent (in mm, the default is 0) property ParagraphLeftIndent: Integer read fParagraphLeftIndent write fParagraphLeftIndent; /// current paragraph right indent (in mm, the default is 0) property ParagraphRightIndent: Integer read fParagraphRightIndent write fParagraphRightIndent; end; {$endif RENDERPAGES} resourcestring sPDFFile = 'Acrobat File'; sPageN = 'Page %d / %d'; /// used to create the popup menu of the report // - should match TGdiPagePreviewButton order sReportPopupMenu1 = '&Next page,&Previous page,&Go to Page...,&Zoom...,'+ '&Bookmarks,Copy Page as &Text,P&rint,PDF &Export,&Close,Page fit,Page width'; /// used to create the pages browsing menu of the report sReportPopupMenu2 = 'Pages %d to %d,Page %d'; const /// minimum gray border with around preview page GRAY_MARGIN = 10; /// TGdiPages.Zoom property value for "Page width" layout during preview PAGE_WIDTH = -1; /// TGdiPages.Zoom property value for "Page fit" layout during preview PAGE_FIT = -2; //TEXT FORMAT FLAGS... FORMAT_DEFAULT = $0; //fontsize bits 0-7 .'. max = 255 FORMAT_SIZE_MASK = $FF; //alignment bits 8-9 FORMAT_ALIGN_MASK = $300; FORMAT_LEFT = $0; FORMAT_RIGHT = $100; FORMAT_CENTER = $200; FORMAT_JUSTIFIED = $300; //fontstyle bits 10-12 FORMAT_BOLD = $400; FORMAT_UNDERLINE = $800; FORMAT_ITALIC = $1000; //undefined bit 13 FORMAT_UNDEFINED = $2000; //line flags bits 14-15 FORMAT_SINGLELINE = $8000; FORMAT_DOUBLELINE = $4000; FORMAT_LINES = $C000; //DrawTextAt XPos 16-30 bits (max value = ~64000) FORMAT_XPOS_MASK = $FFFF0000; PAPERSIZE_A4_WIDTH = 210; PAPERSIZE_A4_HEIGHT = 297; procedure SetCurrentPrinterAsDefault; function CurrentPrinterName: string; function CurrentPrinterPaperSize: string; procedure UseDefaultPrinter; procedure Register; implementation uses {$ifdef ISDELPHIXE3}System.UITypes,{$endif} Types, Clipbrd, Consts; // Miscellaneous functions ... function TextExtent(Canvas: TCanvas; const Text: SynUnicode; Len: integer=0): TSize; begin Result.cX := 0; Result.cY := 0; if Len=0 then Len := length(Text); GetTextExtentPoint32W(Canvas.Handle, pointer(Text), Len, Result); end; function TextWidthC(Canvas: TCanvas; const Text: SynUnicode): Integer; begin Result := TextExtent(Canvas,Text).cX; end; procedure TextOut(Canvas: TCanvas; X,Y: integer; Text: PWideChar; Len: integer); overload; begin ExtTextOutW(Canvas.Handle,X,Y,Canvas.TextFlags,nil,Text,Len,nil); end; procedure TextOut(Canvas: TCanvas; X,Y: integer; const Text: SynUnicode); overload; begin ExtTextOutW(Canvas.Handle,X,Y,Canvas.TextFlags,nil,pointer(Text),Length(Text),nil); end; procedure Register; begin RegisterComponents('Samples', [TGDIPages]); end; function ConvertNegsToParentheses(const ValStr: SynUnicode): SynUnicode; begin result := ValStr; if (result = '') or (result[1] <> '-') then exit; result[1] := '('; result := result+')'; end; function PrinterDriverExists: boolean; var Flags, Count, NumInfo: dword; Level: Byte; begin // avoid using fPrinter.printers.Count as this will raise an // exception if no printer driver is installed... Count := 0; try if Win32Platform = VER_PLATFORM_WIN32_NT then begin Flags := PRINTER_ENUM_CONNECTIONS or PRINTER_ENUM_LOCAL; Level := 4; end else begin Flags := PRINTER_ENUM_LOCAL; Level := 5; end; EnumPrinters(Flags, nil, Level, nil, 0, Count, NumInfo); except end; result := (count > 0); end; function RightTrim(const S: SynUnicode): SynUnicode; var i: integer; begin i := Length(s); while (i > 0) and (ord(S[i])<=32) do dec(i); SetString(result,PWideChar(pointer(S)),i); end; function LowerCaseU(const S: SynUnicode): SynUnicode; var i: integer; begin SetString(result,PWideChar(pointer(S)),length(S)); for i := 0 to length(S)-1 do if PWordArray(result)[i] in [ord('A')..ord('Z')] then dec(PWordArray(result)[i],32); end; function Max(a,b: integer): integer; begin if a > b then result := a else result := b; end; function Min(a,b: integer): integer; begin if a < b then result := a else result := b; end; procedure UseDefaultPrinter; begin Printers.Printer.PrinterIndex := -1; end; function GetDefaultPrinterName: string; var Device : array[byte] of char; p,p2: PChar; begin GetProfileString('windows', 'device', '', Device, 255); p2 := Device; while p2^ = ' ' do inc(p2); p := p2; while not (ord(p2^) in [0,ord(',')]) do inc(p2); SetLength(result, p2 - p); if p2 > p then move(p^, pointer(result)^, p2 - p); end; function GetDriverForPrinter(Device: PChar; Driver: PChar): boolean; var PrintHandle: THandle; DriverInfo2: PDriverInfo2; cnt: dword; DriverPath: string; begin result := false; if not OpenPrinter(Device,PrintHandle, nil) then exit; try getmem(DriverInfo2,1024); try if GetPrinterDriver(PrintHandle, nil, 2, DriverInfo2, 1024, cnt) then begin DriverPath := changefileext(extractfilename(DriverInfo2.pDriverPath),''); strpcopy(Driver, DriverPath); result := true; end; finally freemem(DriverInfo2); end; finally ClosePrinter(PrintHandle); end; end; procedure SetCurrentPrinterAsDefault; var Device : array[byte] of char; Driver : array[byte] of char; Port : array[byte] of char; DefaultPrinter: string; hDeviceMode: THandle; begin DefaultPrinter := GetDefaultPrinterName; Printer.GetPrinter(Device, Driver, Port, hDeviceMode); if DefaultPrinter = Device then exit; if (Driver[0] = #0) then if not GetDriverForPrinter(Device, Driver) then exit; //oops ! DefaultPrinter := format('%s,%s,%s',[Device, Driver, Port]); WriteProfileString( 'windows', 'device', pointer(DefaultPrinter) ); Device := 'windows'; SendMessage( HWND_BROADCAST, WM_WININICHANGE, 0, integer( @Device )); end; function CurrentPrinterName: string; var Device : array[byte] of char; Driver : array[byte] of char; Port : array[byte] of char; hDeviceMode: THandle; begin Printer.GetPrinter(Device, Driver, Port, hDeviceMode); result := trim(Device); end; function CurrentPrinterPaperSize: string; var PtrHdl: THandle; PtrPPI: TPoint; size: TSize; begin try PtrHdl := Printer.Handle; PtrPPI.x := GetDeviceCaps(PtrHdl, LOGPIXELSX); PtrPPI.y := GetDeviceCaps(PtrHdl, LOGPIXELSY); size.cx := MulDiv(GetDeviceCaps(PtrHdl, PHYSICALWIDTH), 254,PtrPPI.x *10); size.cy := MulDiv(GetDeviceCaps(PtrHdl, PHYSICALHEIGHT), 254,PtrPPI.y *10); except end; with size do begin if cx > cy then begin //landscape ... case cy of 148: if (cx = 210) then result := 'A5 (210 x 148mm)'; 210: if (cx = 297) then result := 'A4 (297 x 210mm)'; 216: if (cx = 279) then result := 'Letter (11 x 8½")' else if (cx = 356) then result := 'Legal (14 x 8½")'; 297: if (cx = 420) then result := 'A3 (420 x 297mm)'; end; end else begin //portrait ... case cx of 148: if (cy = 210) then result := 'A5 (148 x 210mm)'; 210: if (cy = 297) then result := 'A4 (210 x 297mm)'; 216: if (cy = 279) then result := 'Letter (8½ x 11")' else if (cy = 356) then result := 'Legal (8½ x 14")'; 297: if (cy = 420) then result := 'A3 (297 x 420mm)'; end; end; if result = '' then result := format('Custom (%d x %dmm)',[cx, cy]); end; end; // This declaration modifies Delphi's declaration of GetTextExtentExPoint // so that the variable to receive partial string extents (p6) is ignored ... function GetTextExtentExPointNoPartialsW(DC: HDC; p2: PChar; p3, p4: Integer; var p5: Integer; const p6: integer; var p7: TSize): BOOL; stdcall; external gdi32 name 'GetTextExtentExPointW'; // TrimLine: Splits off from LS any characters beyond the allowed width // breaking at the end of a word if possible. Leftover chars -> RS. procedure TrimLine(Canvas: TCanvas; var ls: SynUnicode; out rs: SynUnicode; LineWidthInPxls: integer); var i,len,NumCharWhichFit: integer; dummy: TSize; function Fits: boolean; begin result := GetTextExtentExPointNoPartialsW(Canvas.Handle, pointer(ls),len,LineWidthInPxls,NumCharWhichFit,0,dummy); end; begin len := length(ls); if len = 0 then exit; // get the number of characters which will fit within LineWidth... if len>1024 then len := 1024; // speed up the API call: we expect only one line of text if not Fits then // fix API error (too big text) by rough binary approximation repeat len := len shr 1; until (len=0) or Fits; if NumCharWhichFit = length(ls) then exit; // if everything fits then stop here // find the end of the last whole word which will fit... i := NumCharWhichFit; while (NumCharWhichFit > 0) and (ls[NumCharWhichFit] > ' ') do dec(NumCharWhichFit); if (NumCharWhichFit = 0) then NumCharWhichFit := i; i := NumCharWhichFit+1; // ignore trailing blanks in LS... while (ls[NumCharWhichFit] <= ' ') do dec(NumCharWhichFit); // ignore beginning blanks in RS... len := length(ls); // may have been reduced if len>1024 or on API error while (i < len) and (ls[i] <= ' ') do inc(i); rs := copy(ls,i,len); ls := copy(ls,1,NumCharWhichFit); //nb: assign ls AFTER rs here end; procedure PrintBitmap(Canvas: TCanvas; DestRect: TRect; Bitmap: TBitmap); var BitmapHeader: pBitmapInfo; BitmapImage : POINTER; HeaderSize : dword; ImageSize : dword; begin // we expect the bitmap to be stored as DIB in the TMetaFile content GetDIBSizes(Bitmap.Handle,HeaderSize,ImageSize); GetMem(BitmapHeader,HeaderSize); GetMem(BitmapImage,ImageSize); try GetDIB(Bitmap.Handle, Bitmap.Palette, BitmapHeader^, BitmapImage^); // will create a EMR_STRETCHDIBITS record, ready for SynPdf and SynGdiPlus StretchDIBits(Canvas.Handle, DestRect.Left, DestRect.Top, // Destination Origin DestRect.Right - DestRect.Left, // Destination Width DestRect.Bottom - DestRect.Top, // Destination Height 0,0, // Source Origin Bitmap.Width, Bitmap.Height, // Source Width & Height BitmapImage, TBitmapInfo(BitmapHeader^), DIB_RGB_COLORS, SRCCOPY); finally FreeMem(BitmapHeader); FreeMem(BitmapImage) end; end; // This DrawArrow() function is based on code downloaded from // http://www.efg2.com/Lab/Library/Delphi/Graphics/Algorithms.htm // (The original author is unknown) procedure DrawArrowInternal(Canvas: TCanvas; FromPoint, ToPoint: TPoint; HeadSize: integer; SolidArrowHead: boolean); var xbase : integer; xLineDelta : integer; xLineUnitDelta : Double; xNormalDelta : integer; xNormalUnitDelta: Double; ybase : integer; yLineDelta : integer; yLineUnitDelta : Double; yNormalDelta : integer; yNormalUnitDelta: Double; SavedBrushColor : TColor; begin with FromPoint do Canvas.MoveTo(x,y); with ToPoint do Canvas.LineTo(x,y); xLineDelta := ToPoint.X - FromPoint.X; yLineDelta := ToPoint.Y - FromPoint.Y; xLineUnitDelta := xLineDelta / SQRT( SQR(xLineDelta) + SQR(yLineDelta) ); yLineUnitDelta := yLineDelta / SQRt( SQR(xLineDelta) + SQR(yLineDelta) ); // (xBase,yBase) is where arrow line is perpendicular to base of triangle xBase := ToPoint.X - ROUND(HeadSize * xLineUnitDelta); yBase := ToPoint.Y - ROUND(HeadSize * yLineUnitDelta); xNormalDelta := yLineDelta; yNormalDelta := -xLineDelta; xNormalUnitDelta := xNormalDelta / SQRT( SQR(xNormalDelta) + SQR(yNormalDelta) ); yNormalUnitDelta := yNormalDelta / SQRt( SQR(xNormalDelta) + SQR(yNormalDelta) ); SavedBrushColor := Canvas.Brush.Color; if SolidArrowHead then Canvas.Brush.Color := Canvas.Pen.Color; Canvas.Polygon([ToPoint, Point(xBase + ROUND(HeadSize*xNormalUnitDelta), yBase + ROUND(HeadSize*yNormalUnitDelta)), Point(xBase - ROUND(HeadSize*xNormalUnitDelta), yBase - ROUND(HeadSize*yNormalUnitDelta)) ]); Canvas.Brush.Color := SavedBrushColor; end; { TPagePaintBox } procedure TPagePaintBox.WMEraseBkgnd(var Message: TWmEraseBkgnd); begin Message.Result := 1; // no erasing is necessary after this method call end; { TGDIPages } procedure TGDIPages.SetAnyCustomPagePx; begin if Int64(fCustomPageSize)<>-1 then fPhysicalSizePx := fCustomPageSize; if Int64(fCustomNonPrintableOffset)<>-1 then fPhysicalOffsetPx := fCustomNonPrintableOffset; if Int64(fCustomPageMargins.TopLeft)<>-1 then fPageMarginsPx := fCustomPageMargins; if Int64(fCustomPxPerInch)<>-1 then fPrinterPxPerInch := fCustomPxPerInch; fDefaultLineWidth := (fPrinterPxPerInch.y*25) div 2540; end; procedure TGDIPages.GetPrinterParams; var i: integer; begin if Self=nil then exit; if not fForceScreenResolution and fHasPrinterInstalled then try fCurrentPrinter := CurrentPrinterName; if (Printer.orientation <> fOrientation) then Printer.orientation := fOrientation; fPtrHdl := Printer.Handle; fPrinterPxPerInch.x := GetDeviceCaps(fPtrHdl, LOGPIXELSX); fPrinterPxPerInch.y := GetDeviceCaps(fPtrHdl, LOGPIXELSY); fPhysicalSizePx.x := GetDeviceCaps(fPtrHdl, PHYSICALWIDTH); fPhysicalOffsetPx.x := GetDeviceCaps(fPtrHdl,PHYSICALOFFSETX); fPhysicalSizePx.y := GetDeviceCaps(fPtrHdl, PHYSICALHEIGHT); fPhysicalOffsetPx.y := GetDeviceCaps(fPtrHdl,PHYSICALOFFSETY); fDefaultLineWidth := (fPrinterPxPerInch.y*25) div 2540; // 0.25 mm exit; // if a printer was found then that's all that's needed except fHasPrinterInstalled := false; end; // ForceScreenResolution or no Printer: use screen resolution if fHasPrinterInstalled then begin if (Printer.orientation <> fOrientation) then Printer.orientation := fOrientation; fPtrHdl := printer.Handle; fPhysicalSizePx.X := round(GetDeviceCaps(fPtrHdl, PHYSICALWIDTH) * screen.pixelsperinch / GetDeviceCaps(fPtrHdl, LOGPIXELSX)); fPhysicalSizePx.Y := round(GetDeviceCaps(fPtrHdl, PHYSICALHEIGHT) * screen.pixelsperinch / GetDeviceCaps(fPtrHdl, LOGPIXELSY)); end else begin // if no printer drivers installed use the screen as device context and // assume A4 page size... fPtrHdl := 0; //GetDC(0); fPhysicalSizePx.X := MulDiv(PAPERSIZE_A4_WIDTH*10,screen.pixelsperinch,254); fPhysicalSizePx.Y := MulDiv(PAPERSIZE_A4_HEIGHT*10,screen.pixelsperinch,254); end; //assume 6mm non-printing offsets... fPhysicalOffsetPx.X := MulDiv(60,screen.pixelsperinch,254); fPhysicalOffsetPx.Y := MulDiv(60,screen.pixelsperinch,254); fPrinterPxPerInch.X := screen.pixelsperinch; fPrinterPxPerInch.Y := screen.pixelsperinch; //fDefaultLineWidth ==> 0.3 mm fDefaultLineWidth := (fPrinterPxPerInch.y*3) div 254; if not fHasPrinterInstalled and (fOrientation = poLandscape) then begin // no Printer.Orientation -> swap width & height if Landscape page layout i := fPhysicalSizePx.x; fPhysicalSizePx.x := fPhysicalSizePx.y; fPhysicalSizePx.y := i; end; end; procedure TGDIPages.SetMetaFileForPage(PageIndex: integer; MetaFile: TMetaFile); var stream: TRawByteStringStream; begin if cardinal(PageIndex)>=cardinal(length(fPages)) then exit; stream := TRawByteStringStream.Create; try MetaFile.SaveToStream(stream); fPages[PageIndex].MetaFileCompressed := stream.DataString; CompressSynLZ(fPages[PageIndex].MetaFileCompressed,true); finally stream.Free; end; end; function TGDIPages.GetMetaFileForPage(PageIndex: integer): TMetaFile; var tmp: RawByteString; stream: TStream; begin if fMetaFileForPage=nil then fMetaFileForPage := TMetafile.Create else fMetaFileForPage.Clear; result := fMetaFileForPage; if cardinal(PageIndex)>=cardinal(length(fPages)) then exit; tmp := fPages[PageIndex].MetaFileCompressed; CompressSynLZ(tmp,false); stream := TRawByteStringStream.Create(tmp); try fMetaFileForPage.LoadFromStream(stream); finally stream.Free; end; end; function TGDIPages.PrinterPxToScreenPxX(PrinterPx: integer): integer; begin if (Self=nil) or (fPrinterPxPerInch.x=0) then result := 0 else result := (PrinterPx*screen.pixelsperinch*fZoom) div (fPrinterPxPerInch.x*100); end; function TGDIPages.PrinterPxToScreenPxY(PrinterPx: integer): integer; begin if (Self=nil) or (fPrinterPxPerInch.y=0) then result := 0 else result := (PrinterPx*screen.pixelsperinch*fZoom) div (fPrinterPxPerInch.y*100); end; function TGDIPages.MmToPrinterPxX(mm: integer): integer; begin if Self=nil then result := 0 else result := ((mm*10) * fPrinterPxPerInch.x) div 254; end; function TGDIPages.MmToPrinterPxY(mm: integer): integer; begin if Self=nil then result := 0 else result := ((mm*10) * fPrinterPxPerInch.y) div 254; end; function TGDIPages.PrinterPxToMmX(px: integer): integer; begin if (Self=nil) or (fPrinterPxPerInch.x=0) then result := 0 else result := (px*254) div (fPrinterPxPerInch.x*10); end; function TGDIPages.PrinterPxToMmY(px: integer): integer; begin if (Self=nil) or (fPrinterPxPerInch.y=0) then result := 0 else result := (px*254) div (fPrinterPxPerInch.y*10); end; procedure TGDIPages.ResizeAndCenterPaintbox; var l,t, i: integer; siz: TPoint; begin if cardinal(page-1) fPhysicalSizePx.y) then result := poLandscape else result := poPortrait; end; procedure TGDIPages.SetTextAlign(Value: TTextAlign); begin if Self<>nil then fAlign := Value; end; procedure TGDIPages.SetOrientation(orientation: TPrinterOrientation); begin if (Self<>nil) and (fOrientation<>orientation) then begin fOrientation := orientation; if fPages<>nil then begin // changed orientation after start writing -> customize with inversed size fCustomPageSize.X := fPhysicalSizePx.Y; fCustomPageSize.Y := fPhysicalSizePx.X; fCustomPxPerInch.X := fPrinterPxPerInch.Y; fCustomPxPerInch.Y := fPrinterPxPerInch.X; fCustomNonPrintableOffset.X := fPhysicalOffsetPx.Y; fCustomNonPrintableOffset.Y := fPhysicalOffsetPx.X; end; end; end; procedure TGDIPages.NewPageLayout(sizeWidthMM, sizeHeightMM: integer; nonPrintableWidthMM: integer=-1; nonPrintableHeightMM: integer=-1); begin if Self=nil then exit; fCustomPageSize.X := MmToPrinterPxX(sizeWidthMM); fCustomPageSize.Y := MmToPrinterPxY(sizeHeightMM); if (nonPrintableWidthMM>=0) and (nonPrintableHeightMM>=0) then begin fCustomNonPrintableOffset.X := MmToPrinterPxX(nonPrintableWidthMM); fCustomNonPrintableOffset.Y := MmToPrinterPxY(nonPrintableHeightMM); end; if fPages<>nil then // force new page if already some content NewPage(true); end; procedure TGDIPages.NewPageLayout(paperSize: TGdiPagePaperSize; orientation: TPrinterOrientation=poPortrait; nonPrintableWidthMM: integer=-1; nonPrintableHeightMM: integer=-1); var Siz,NonPrint: TPoint; const // psA4, psA5, psA3, psLetter, psLegal SIZES: array[TGdiPagePaperSize] of TPoint = ( (x:210;y:297),(x:148;y:210),(x:297;y:420),(x:216;y:279),(x:216;y:356)); begin if orientation=poPortrait then begin Siz := SIZES[paperSize]; NonPrint.X := nonPrintableWidthMM; NonPrint.Y := nonPrintableHeightMM; end else begin Siz.X := SIZES[paperSize].Y; Siz.Y := SIZES[paperSize].X; NonPrint.X := nonPrintableHeightMM; NonPrint.Y := nonPrintableWidthMM; end; NewPageLayout(Siz.X,Siz.Y,NonPrint.X,NonPrint.Y); end; procedure TGDIPages.SetPage(NewPreviewPage: integer); begin if Self=nil then exit; if NewPreviewPage > length(fPages) then NewPreviewPage := length(fPages) else if NewPreviewPage < 1 then NewPreviewPage := 1; if (Pages = nil) or (fCurrPreviewPage = NewPreviewPage) then exit; fCurrPreviewPage := NewPreviewPage; fLinksCurrent := -1; FreeAndNil(PreviewSurfaceBitmap); // force double buffering Bitmap recreate ResizeAndCenterPaintbox; // if page size changed PreviewPaint(Self); if Assigned(fPreviewPageChangedEvent) then fPreviewPageChangedEvent(Self); if PreviewForm<>nil then begin PreviewPageCountLabel.Caption := format(sPageN,[Page,PageCount]); PreviewButtons[ord(rNextPage)-1].Enabled := Page1; end; end; function TGDIPages.GetPageCount: integer; begin if Self=nil then result := 0 else result := length(fPages); end; function TGDIPages.GetLineHeight: integer; var tm: TTextMetric; DC: HDC; begin if Self=nil then begin result := 0; exit; end; if fLineHeight = 0 then begin if not Assigned(fCanvas) then begin // if no current fCanvas: use the Screen resolution (very fast) DC := GetDC(0); GetTextMetrics(DC,tm); ReleaseDC(0,DC); end else GetTextMetrics(fCanvas.Handle,tm); fLineHeight := ((tm.tmHeight+tm.tmExternalLeading)*9)shr 3; end; if fInHeaderOrFooter then result := fLineHeight else case fLineSpacing of lsSingle: result := fLineHeight; lsOneAndHalf: result := (fLineHeight*3) shr 1; else result := fLineHeight*2; end; end; function TGDIPages.GetLineHeightMm: integer; begin if Self=nil then result := 0 else result := PrinterPxToMmY(GetLineHeight); end; procedure TGDIPages.CheckHeaderDone; begin if not fHeaderDone then DoHeader; end; procedure TGDIPages.CheckYPos; begin if Self=nil then exit; if fInHeaderOrFooter then exit; CheckHeaderDone; if not HasSpaceForLines(1) then begin NewPageInternal; // nb: header is done inside a group, so we must check for it CheckHeaderDone; end; end; function TGDIPages.GetYPos: integer; begin if (Self=nil) or (fPrinterPxPerInch.y=0) then result := 0 else result := (fCurrentYPos*254) div (fPrinterPxPerInch.y*10); end; procedure TGDIPages.SetYPos(YPos: integer); begin if Self=nil then exit; if fCurrentYPos >= fPhysicalSizePx.y then NewPageInternal; fCurrentYPos := MmToPrinterPxY(YPos); end; function TGDIPages.GetSavedState: TSavedState; begin with result do begin Flags := TextFormatsToFlags; FontName := Font.Name; FontColor := Font.Color; LeftMargin := fPageMarginsPx.Left; RightMargin := fPageMarginsPx.Right; BiDiMode := fBiDiMode; end; end; procedure TGDIPages.SetSavedState(const SavedState: TSavedState); begin with SavedState do begin SetFontWithFlags(Flags); Font.Name := FontName; Font.Color := FontColor; fPageMarginsPx.Left := LeftMargin; fPageMarginsPx.Right := RightMargin; fBiDiMode := BiDiMode; end; end; procedure TGDIPages.SaveLayout; begin if Self=nil then exit; // avoid GPF if fSavedCount>=length(fSaved) then SetLength(fSaved,fSavedCount+20); fSaved[fSavedCount] := SavedState; inc(fSavedCount); end; procedure TGDIPages.RestoreSavedLayout; begin if Self=nil then exit; // avoid GPF if fSavedCount<=0 then exit; dec(fSavedCount); SavedState := fSaved[fSavedCount]; end; function TGDIPages.CreateMetaFile(aWidth, aHeight: integer): TMetaFile; begin result := TMetafile.Create; if Self=nil then exit; result.Enhanced := true; result.Width := aWidth; result.Height := aHeight; end; procedure TGDIPages.FlushPageContent; var n: integer; begin n := length(fPages); if n>0 then begin with fPages[n-1] do begin Text := fCanvasText; SizePx := fPhysicalSizePx; MarginPx := fPageMarginsPx; OffsetPx := fPhysicalOffsetPx; end; if fCurrentMetaFile<>nil then begin SetMetaFileForPage(n-1,fCurrentMetaFile); FreeAndNil(fCurrentMetaFile); end; end; end; procedure TGDIPages.NewPageInternal; var n: integer; UsedGroupSpace: integer; InGroup: boolean; GroupText: string; begin if Self=nil then exit; UsedGroupSpace := 0; //stops a warning InGroup := Assigned(fGroupPage); if InGroup then begin // close the Group Canvas UsedGroupSpace := fCurrentYPos; FreeAndNil(fCanvas); // now recreate/redraw a fresh fCanvas for DoFooter fCanvas := CreateMetafileCanvas(fCurrentMetaFile); fCanvas.Draw(0,0,fCurrentMetaFile); // re-draw last page GroupText := fCanvasText; fCanvasText := fBeforeGroupText; end; DoFooter; //create a new metafile and its canvas ... if Assigned(fCanvas) then FreeAndNil(fCanvas); FlushPageContent; SetAnyCustomPagePx; //NewPage.MMWidth := (fPhysicalSizePx.x*2540) div fPrinterPxPerInch.x; //NewPage.MMHeight := (fPhysicalSizePx.y*2540) div fPrinterPxPerInch.y; n := Length(fPages)+1; SetLength(fPages,n); fCurrentMetaFile := CreateMetaFile(fPhysicalSizePx.x,fPhysicalSizePx.y); fCanvas := CreateMetafileCanvas(fCurrentMetaFile); fCanvasText := ''; inc(fVirtualPageNum); fCurrentYPos := fPageMarginsPx.top; if Assigned(fStartNewPage) then fStartNewPage(Self,n); fHeaderDone := false; fColumnHeaderPrinted := false; // when next col. started add header if InGroup then begin // draw the group at the begining of new page + EndGroup DoHeader; if fColumnsUsedInGroup then begin //The next line is a workaround to stop an endless loop. CheckYPos (called //via PrintColumnHeaders) thinks we're still drawing on fGroupPage as it's //still Assigned so can flag "out of room" and try to create another page. fGroupVerticalSpace := fPhysicalSizePx.y; if not fColumnHeaderInGroup then PrintColumnHeaders else fColumnHeaderPrinted := true; end; fCanvas.Draw(0,fCurrentYPos,fGroupPage); FreeAndNil(fGroupPage); // idem as EndGroup inc(fCurrentYPos,UsedGroupSpace); fCanvasText := fCanvasText+GroupText; end; end; function TGDIPages.CreateMetafileCanvas(Page: TMetafile): TMetafileCanvas; begin result := TMetafileCanvas.Create(Page,fPtrHdl); if Self=nil then exit; UpdateMetafileCanvasFont(result); result.Pen.Width := fPrinterPxPerInch.y div screen.PixelsPerInch; end; procedure TGDIPages.UpdateMetafileCanvasFont(aCanvas: TMetafileCanvas); begin // next 2 lines are a printer bug workaround - 23Mar2000 aCanvas.Font.Size := Font.Size+1; aCanvas.Font.PixelsPerInch := fPrinterPxPerInch.y; aCanvas.Font := Font; end; function TGDIPages.TextFormatsToFlags: integer; begin result := min(max(font.size,4),FORMAT_SIZE_MASK); { size between 4 and 255 } case fAlign of taRight: result := result or FORMAT_RIGHT; taCenter: result := result or FORMAT_CENTER; taJustified: result := result or FORMAT_JUSTIFIED; end; if fsBold in font.style then result := result or FORMAT_BOLD; if fsUnderline in font.style then result := result or FORMAT_UNDERLINE; if fsItalic in font.style then result := result or FORMAT_ITALIC; end; procedure TGDIPages.SetFontWithFlags(flags: integer); var fontstyle: TFontStyles; begin if flags and FORMAT_SIZE_MASK<>Font.Size then Font.size := flags and FORMAT_SIZE_MASK; if (flags and FORMAT_BOLD) <> 0 then fontstyle := [fsBold] else fontstyle := []; if (flags and FORMAT_UNDERLINE) <> 0 then include(fontstyle,fsUnderline); if (flags and FORMAT_ITALIC) <> 0 then include(fontstyle,fsItalic); if Font.Style<>fontstyle then Font.Style := fontstyle; case flags and FORMAT_ALIGN_MASK of FORMAT_RIGHT: falign := taRight; FORMAT_CENTER: falign := taCenter; FORMAT_JUSTIFIED: falign := taJustified; else falign := taLeft; end; end; function TGDIPages.HasSpaceForLines(Count: integer): boolean; begin if Self=nil then result := false else // avoid GPF if Assigned(fGroupPage) then result := fCurrentYPos + GetLineHeight*Count < fGroupVerticalSpace else result := fCurrentYPos + GetLineHeight*Count < fPhysicalSizePx.y - fPageMarginsPx.bottom - fFooterHeight; end; function TGDIPages.HasSpaceFor(mm: integer): boolean; begin if Self=nil then result := false else begin // avoid GPF mm := fCurrentYPos + MmToPrinterPxY(mm); if Assigned(fGroupPage) then result := mm < fGroupVerticalSpace else result := mm < fPhysicalSizePx.y - fPageMarginsPx.bottom - fFooterHeight; end; end; procedure TGDIPages.DoHeader; begin fHeaderDone := true; if (fHeaderLines.Count = 0) then exit; SaveLayout; if Assigned(fStartPageHeader) then fStartPageHeader(Self); Font.Color := clBlack; DoHeaderFooterInternal(fHeaderLines); if Assigned(fEndPageHeader) then fEndPageHeader(Self); GetLineHeight; inc(fCurrentYPos,fLineHeight shr 2); // add a small header gap fHeaderHeight := fCurrentYPos-fPageMarginsPx.Top; RestoreSavedLayout; end; procedure TGDIPages.DoFooter; begin if (fFooterLines.Count = 0) then exit; SaveLayout; fCurrentYPos := fPhysicalSizePx.y - fPageMarginsPx.bottom - fFooterHeight + fFooterGap; if Assigned(fStartPageFooter) then fStartPageFooter(Self); DoHeaderFooterInternal(fFooterLines); if Assigned(fEndPageFooter) then fEndPageFooter(Self); RestoreSavedLayout; end; procedure TGDIPages.DoHeaderFooterInternal(Lines: TObjectList); var i: integer; begin SaveLayout; fInHeaderOrFooter := true; try for i := 0 to Lines.Count -1 do with THeaderFooter(Lines[i]) do begin SavedState := State; PrintFormattedLine(Text, State.Flags); end; finally fInHeaderOrFooter := false; RestoreSavedLayout; end; end; procedure TGDIPages.CalcFooterGap; begin GetLineHeight; // make sure there's a gap of at least 1/4 of a lineheight // between the page body and the footer ... fFooterGap := fLineHeight shr 2; fFooterHeight := fFooterGap; end; function TGDIPages.GetColumnRec(col: integer): TColRec; begin result.ColLeft := 0; result.ColRight := 0; if Cardinal(col) 200) then exit; fLinksCurrent := -1; FreeAndNil(PreviewSurfaceBitmap); if (not handleallocated) or (fZoom=Zoom) or (cardinal(page-1)>=cardinal(length(fPages))) then exit; // calculate the new fZoom ... siz := fPages[page-1].SizePx; if (siz.x=0) or (siz.y=0) then // in case of potential div per 0 -> do it later exit else if zoom = PAGE_FIT then begin ZoomW := trunc((clientWidth-GRAY_MARGIN*2)*fPrinterPxPerInch.x* 100/siz.x/screen.pixelsperinch); ZoomH := trunc((clientHeight-GRAY_MARGIN*2)*fPrinterPxPerInch.y* 100/siz.y/screen.pixelsperinch); //choose the smallest of width% and height% to fit on page (but min 10%) fZoom := Max(Min(ZoomW,ZoomH),10); end else if zoom = PAGE_WIDTH then fZoom := trunc((clientWidth-GRAY_MARGIN*2)*fPrinterPxPerInch.x* 100/siz.x/screen.pixelsperinch) else fZoom := Zoom; // ZoomStatus required when resizing... if zoom = PAGE_FIT then fZoomStatus := zsPageFit else if zoom = PAGE_WIDTH then fZoomStatus := zsPageWidth else fZoomStatus := zsPercent; scrollIncrement := PrinterPxToScreenPxY(GetLineHeight); HorzScrollbar.Increment := scrollIncrement; VertScrollbar.Increment := scrollIncrement; // resize and center preview surface... ResizeAndCenterPaintbox; if Assigned(fZoomChangedEvent) then fZoomChangedEvent(Self, fZoom, fZoomStatus); end; const ZOOMSTEP = 20; procedure TGDIPages.ZoomTimerInternal(X,Y: integer; ZoomIn: boolean); var OldZoom: integer; pt, siz: TPoint; begin if (Self=nil) or (fPhysicalSizePx.x=0) or (fPhysicalSizePx.y=0) then Exit; if page>0 then siz := fPages[page-1].SizePx else siz := fPhysicalSizePx; OldZoom := fZoom; sendmessage(handle,WM_SETREDRAW,0,0); try if ZoomIn then begin {$ifdef MOUSE_CLICK_PERFORM_ZOOM} if fZoom >= 200 then fZoomTimer.enabled := false else //(maximum 200%) {$else}if fZoom < 200 then {$endif} Zoom := ((fZoom + ZOOMSTEP) div ZOOMSTEP)*ZOOMSTEP; //to nearest ZOOMSTEP% end else begin if (fZoom > 20) then Zoom := ((fZoom - ZOOMSTEP) div ZOOMSTEP)*ZOOMSTEP else //(minimum 20%) {$ifdef MOUSE_CLICK_PERFORM_ZOOM} fZoomTimer.enabled := false; {$endif} end; if fZoom = OldZoom then exit; // work out click pos relative to page (as x & y percentages) pt.x := ((X-fPreviewSurface.left-GRAY_MARGIN)*100) div PrinterPxToScreenPxX(siz.x); pt.x := min(max(pt.x,0),100); pt.y := ((Y-fPreviewSurface.top-GRAY_MARGIN)*100) div PrinterPxToScreenPxY(siz.y); pt.y := min(max(pt.y,0),100); // finally, adjust scrollbar positions based on click pos ... with HorzScrollbar do position := (pt.x*(range-clientwidth)) div 100; with VertScrollbar do position := (pt.y*(range-clientheight)) div 100; finally SendMessage(handle,WM_SETREDRAW,1,0); end; Invalidate; end; procedure TGDIPages.ZoomTimer(Sender: TObject); var CursorPos: TPoint; begin GetCursorPos(CursorPos); CursorPos := ScreenToClient(CursorPos); ZoomTimerInternal(CursorPos.x,CursorPos.y, fZoomIn); end; procedure TGDIPages.LineInternal(start,finish: integer; DoubleLine: boolean); var Y: integer; begin if (Self<>nil) and (fCanvas<>nil) then with fCanvas do begin Pen.Width := MulDiv(fDefaultLineWidth,Self.Font.Size,8); if fsBold in Self.Font.style then Pen.Width := Pen.Width +1; if DoubleLine then begin Y := fCurrentYPos + (GetLineHeight shr 1) - (Pen.Width); MoveTo(start,Y); LineTo(finish,Y); MoveTo(start,Y + Pen.Width*2); LineTo(finish,Y + Pen.Width*2); end else begin Y := fCurrentYPos + (GetLineHeight shr 1) - (Pen.Width shr 1); MoveTo(start,Y); LineTo(finish,Y); end; end; end; procedure TGDIPages.PrintFormattedLine(s: SynUnicode; flags: integer; const aBookmark: string; const aLink: string; withNewLine: boolean); var i, xpos: integer; leftOffset, rightOffset: integer; begin s := RightTrim(s); i := pos(PAGENUMBER,LowerCaseU(s)); if i > 0 then begin delete(s,i,14); insert(UTF8ToSynUnicode(Int32ToUtf8(fVirtualPageNum)),s,i); end; if flags <> FORMAT_DEFAULT then SetFontWithFlags(flags); CheckYPos; fCurrentTextTop := fCurrentYPos; fCurrentTextPage := PageCount; GetTextLimitsPx(leftOffset,rightOffset); if flags and (FORMAT_SINGLELINE or FORMAT_DOUBLELINE)<>0 then begin LineInternal(leftOffset,rightOffset,flags and FORMAT_DOUBLELINE=FORMAT_DOUBLELINE); NewLine; end else if s = '' then begin if withNewLine then NewLine; end else if (flags and FORMAT_XPOS_MASK <> 0) then begin xpos := ((flags and FORMAT_XPOS_MASK) shr 16)-2; if xpos<0 then xpos := RightMarginPos else inc(xpos); DrawTextAt(s,xpos); end else if (falign in [taLeft,taJustified]) then LeftOrJustifiedWrap(s,withNewLine) else RightOrCenterWrap(s); if aBookmark<>'' then AddBookMark(aBookmark,fCurrentTextTop); if aLink<>'' then AddLink(aLink,Rect(PrinterPxToMmX(leftOffset),PrinterPxToMmY(fCurrentTextTop), PrinterPxToMmX(rightOffset),PrinterPxToMmY(fCurrentTextTop+fLineHeight)), fCurrentTextPage); // first line of written text is added end; procedure TGDIPages.LeftOrJustifiedWrap(const s: SynUnicode; withNewLine: boolean); var indent, leftOffset, rightOffset, LineWidth: integer; leftstring, rightstring: SynUnicode; firstLoop: boolean; begin leftstring := s; Indent := MmToPrinterPxX(fHangIndent); firstLoop := true; repeat CheckYPos; GetTextLimitsPx(leftOffset,rightOffset); LineWidth := rightOffset-leftOffset; // offset leftOffset if hang-indenting... if Indent<>0 then if firstLoop then begin firstLoop := false; if (Indent < 0) then begin inc(leftOffset,-Indent); dec(LineWidth,-Indent); end; end else if (Indent > 0) and (Indent < LineWidth) then begin inc(leftOffset,Indent); dec(LineWidth,Indent); end; // dump overrun into rightstring... TrimLine(fCanvas,leftstring,rightstring,LineWidth); // HandleTabsAndPrint: prints leftstring after adjusting for tabs and // prepending any further text overrun into rightstring ... HandleTabsAndPrint(leftstring, rightstring, leftOffset, rightOffset); if length(rightstring)=0 then break; leftstring := rightstring; NewLine; until false; if withNewLine then NewLine; end; procedure TGDIPages.RightOrCenterWrap(const s: SynUnicode); var i,leftOffset,rightOffset, LineWidth: integer; leftstring,rightstring: SynUnicode; offset: integer; begin leftstring := s; // remove tabs and replace by spaces i := pos(#9,leftstring); while i > 0 do begin delete(leftstring,i,1); insert(' ',leftstring,i); i := pos(#9,leftstring); end; // write text SetBkMode(fCanvas.Handle,TRANSPARENT); repeat GetTextLimitsPx(leftOffset,rightOffset); LineWidth := rightOffset-leftOffset; TrimLine(fCanvas,leftstring,rightstring,LineWidth); case falign of taRight: Offset := rightOffset-TextWidthC(fCanvas,leftstring)-1; taCenter: Offset := leftOffset+ (rightOffset-leftOffset-TextWidthC(fCanvas,leftstring))div 2; else Offset := 0; // should never happen - ?? add assert end; CheckYPos; TextOut(fCanvas,Offset,fCurrentYPos,leftstring); if length(rightstring) = 0 then break; leftstring := rightstring; NewLine; until false; NewLine; end; procedure TGDIPages.GetTextLimitsPx(var LeftOffset, RightOffset: integer); begin // Offsets (in Printer pixels) based on current page margins LeftOffset := fPageMarginsPx.left; if fForcedLeftOffset <> -1 then leftOffset := fForcedLeftOffset; RightOffset := fPhysicalSizePx.x-fPageMarginsPx.right; if RightOffset < LeftOffset then raise Exception.Create('GetTextLimitsPx: wrong margins'); end; procedure TGDIPages.HandleTabsAndPrint(const leftstring: SynUnicode; var rightstring: SynUnicode; leftOffset, rightOffset: integer); const // if a tabstop is very close to the right margin, it may spoil justifying... MIN_CHAR_WIDTH_PX = 5; var i, spacecount, linewidth, tabPos, tabIndex, PWLen: integer; ls, rs: SynUnicode; size: TSize; PW: PWideChar; begin // handles tabs one at a time and prints text into the available space... // (unfortunately there's no equivalent GetTextExtentExPoint() for tabbed text // and using GetTabbedTextExtent() and TabbedDrawText() instead would appear // to be undesirable as there's no efficient way to determine the number of // chars that will fit within the specified space) ls := leftstring; linewidth := rightOffset - leftOffset; tabPos := pos(#9,ls); SetBkMode(fCanvas.Handle,TRANSPARENT); while tabPos > 0 do begin // and still room to print // split line at the tab ... if rs <> '' then rs := copy(ls,tabPos+1,length(ls)) + ' '+ rs else rs := copy(ls,tabPos+1,length(ls)); // add a trailing space so next the tabstop is at least one space away ... ls := copy(ls,1,tabPos-1)+' '; // get offset of next tabstop ... size := TextExtent(fCanvas,ls,tabPos); i := leftOffset + size.cx; //minimum pos for next tabstop tabIndex := 0; while tabIndex < MAXTABS do if fTab[tabIndex] > i then break else inc(tabIndex); if (tabIndex = MAXTABS) or (fTab[tabIndex] >= rightOffset - MIN_CHAR_WIDTH_PX) then begin // no tabstop found to align 'rs' to, so ... // rather than left aligning 'ls', remove its appended space and // break out ready to print it ? align left&right justified. SetLength(ls,length(ls)-1); break; end; // tabstop found so DrawText 'ls' simply left aligned ... TextOut(fCanvas,leftOffset,fCurrentYPos,ls); leftOffset := fTab[tabIndex]; linewidth := rightOffset - leftOffset; ls := rs; TrimLine(fCanvas,ls,rs,linewidth); tabPos := pos(#9,ls); end; if rs <> '' then rightstring := rs + ' '+ rightstring; // OK, no TABS now in ls... InternalUnicodeString(ls,PW,PWLen,@size); // print ls into (remaining) linewidth at (leftOffset, fCurrentYPos) if (falign = taLeft) or (rightstring = '') then begin // left aligned if BiDiMode=bdRightToLeft then leftOffset := rightOffset-size.cx; TextOut(fCanvas,leftOffset,fCurrentYPos,PW,PWLen); fForcedLeftOffset := leftOffset+size.cx; // don't care about line width: it should be always equal or smaller, // and we are left aligned end else begin // justified spacecount := 0; for i := 1 to length(ls) do if ls[i] = ' ' then inc(spacecount); if spacecount>0 then SetTextJustification(fCanvas.Handle, linewidth - size.cx, spacecount); TextOut(fCanvas,leftOffset,fCurrentYPos,PW,PWLen); SetTextJustification(fCanvas.Handle,0,0); end; end; procedure TGDIPages.PreviewPaint(Sender: TObject); var R: TRect; P1,P2: TPoint; begin if csDesigning in ComponentState then begin // no preview at design time R := fPreviewSurface.ClientRect; fPreviewSurface.Canvas.Brush.Color := Color; fPreviewSurface.Canvas.FillRect(R); exit; end; if not Visible then begin FreeAndNil(PreviewSurfaceBitmap); exit; end; if PreviewSurfaceBitmap<>nil then fPreviewSurface.Canvas.Draw(0,0,PreviewSurfaceBitmap) else with fPreviewSurface do begin // paint the page white with a dark gray line around it R := ClientRect; PreviewSurfaceBitmap := TBitmap.Create; PreviewSurfaceBitmap.Width := R.Right; PreviewSurfaceBitmap.Height := R.Bottom; with PreviewSurfaceBitmap.Canvas do begin Brush.Color := Color; // background color FillRect(R); InflateRect(R,-GRAY_MARGIN,-GRAY_MARGIN); Brush.Color := clWhite; Pen.Width := 1; Pen.Color := clGray; Rectangle(R); Refresh; end; // draw the metafile on the page if (fPages<>nil) and (cardinal(Page-1)<=cardinal(High(fPages))) and (fPages[Page-1].MetaFileCompressed<>'') then begin {$ifdef GDIPLUSDRAW} // anti aliased drawing: if not ForceNoAntiAliased then DrawEmfGdip(PreviewSurfaceBitmap.Canvas.Handle, GetMetaFileForPage(Page-1),R,ForceInternalAntiAliased, ForceInternalAntiAliasedFontFallBack) else {$endif} begin // fast direct GDI painting, with no antialiaising: // note: we must use a temporary TMetaFile, otherwise the Pages[] content // is changed (screen dpi is changed but not reset in nested emf) and the // resulting report is incorrect on most printers, due to a driver bug :( PreviewSurfaceBitmap.Canvas.StretchDraw(R,GetMetaFileForPage(Page-1)); end; PreviewSurfaceBitmap.Canvas.Refresh; end; // draw the change page grey "arrow" buttons if Page>1 then begin P1.X := R.Left+10; P2.X := R.Left+1; PageLeftButton.X := P2.X; P1.Y := R.Top+11; P2.Y := P1.Y; PageLeftButton.Y := P1.Y-10; DrawArrowInternal(PreviewSurfaceBitmap.Canvas,P1,P2,10,true); end else PageLeftButton.X := 0; if Page=0 then fPreviewSurface.Canvas.DrawFocusRect( TGDIPagereference(fLinks.Objects[fLinksCurrent]).Preview); end; procedure TGDIPages.PreviewMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); var i: integer; begin if Button=mbRight then begin if PopupMenu<>nil then begin with fPreviewSurface.ClientToScreen(Point(X,Y)) do PopupMenu.Popup(X,Y); exit; end; end else if Button=mbLeft then begin if fLinksCurrent>=0 then begin fPreviewSurface.Canvas.DrawFocusRect( TGDIPagereference(fLinks.Objects[fLinksCurrent]).Preview); i := fLinksCurrent; fLinksCurrent := -1; GotoBookmark(fLinks[i]); end else if (PageLeftButton.X<>0) and (cardinal(X-PageLeftButton.X)<10) and (cardinal(Y-PageLeftButton.Y)<20) then begin Page := Page-1; exit; end else if (PageRightButton.X<>0) and (cardinal(X-PageRightButton.X)<10) and (cardinal(Y-PageRightButton.Y)<20) then begin Page := Page+1; exit; end; end; if (Button=mbLeft) and (ssDouble in Shift) then // allows dblclick to alternate between PAGE_FIT and PAGE_WIDTH if ZoomStatus = zsPageWidth then Zoom := PAGE_FIT else Zoom := PAGE_WIDTH else {$ifndef MOUSE_CLICK_PERFORM_ZOOM} if Button=mbLeft then begin fButtonDown.X := (X shr 3)shl 3; // move 8 pixels by 8 pixels fButtonDown.Y := (Y shr 3)shl 3; fButtonDownScroll.X := HorzScrollBar.Position; fButtonDownScroll.Y := VertScrollBar.Position; Screen.Cursor := crHandPoint; end; {$endif} //pass the TPaintbox mouse-down event messages to Self (TScrollBox) ... MouseDown(Button,Shift,X+fPreviewSurface.left,Y+fPreviewSurface.Top); end; procedure TGDIPages.PreviewMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin //pass the TPaintbox mouse-up event messages to Self (TScrollBox) ... MouseUp(Button,Shift,X+fPreviewSurface.left,Y+fPreviewSurface.Top); end; procedure TGDIPages.PreviewMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer); {$ifndef MOUSE_CLICK_PERFORM_ZOOM} var BX, V: integer; {$endif} var i: integer; begin fMousePos.X := X+fPreviewSurface.left; fMousePos.Y := Y+fPreviewSurface.Top; if fLinksCurrent>=0 then begin fPreviewSurface.Canvas.DrawFocusRect( TGDIPagereference(fLinks.Objects[fLinksCurrent]).Preview); fLinksCurrent := -1; end; {$ifndef MOUSE_CLICK_PERFORM_ZOOM} if fButtonDown.X>=0 then begin X := (X shr 3)shl 3; // move 8 pixels by 8 pixels Y := (Y shr 3)shl 3; { OutputDebugString(pointer(format( 'X=%d Y=%d ScrlIni X=%d Y=%d ScrlCurr X=%d Y=%d ', [X,Y,fButtonDownScroll.X,fButtonDownScroll.Y, HorzScrollBar.Position,VertScrollBar.Position]))); } BX := fButtonDown.X; fButtonDown.X := -1; // avoid endless recursive call V := fButtonDownScroll.X-X+BX; if (V>=0) and (HorzScrollBar.Position<>V) and (V=0) and (VertScrollBar.Position<>V) and (V=Preview.Left) and (X=Preview.Top) and (Y 1) then SetPageAndPosition(Page-1,range); end; VK_RIGHT: with HorzScrollbar do position := position + max(lh,0); VK_LEFT: with HorzScrollbar do position := position - min(lh,range); VK_NEXT: with VertScrollbar do if (shift = [ssCtrl]) and (Page < PageCount) then SetPageAndPosition(PageCount,0) else begin OldPosition := Position; position := position + max(clientheight - lh,0); if (Position = OldPosition) and (Page < PageCount) then SetPageAndPosition(Page+1,0); end; VK_PRIOR: with VertScrollbar do begin if (shift = [ssCtrl]) and (Page > 1) then SetPageAndPosition(1,0) else begin OldPosition := Position; position := position - max(clientheight-lh,0); if (Position = OldPosition) and (Page > 1) then SetPageAndPosition(Page-1,range); end; end; VK_ADD, VK_SUBTRACT, 187, 189: if ssCtrl in Shift then begin fZoomIn := Key in [VK_ADD,187]; // Ctrl+ Ctrl- are standard zoom IN/OUT ZoomTimer(nil); end; VK_ESCAPE: if PreviewForm<>nil then PreviewForm.Close; // ESC will close preview form (if any) end; inherited; end; procedure TGDIPages.CreateWnd; begin inherited CreateWnd; // force page repositioning +/-resizing case ZoomStatus of zsPercent: ResizeAndCenterPaintbox; zsPageWidth: zoom := PAGE_WIDTH; else zoom := PAGE_FIT; end; end; procedure TGDIPages.Resize; begin // force page repositioning +/-resizing case ZoomStatus of zsPercent: ResizeAndCenterPaintbox; zsPageWidth: zoom := PAGE_WIDTH; else zoom := PAGE_FIT; end; inherited Resize; end; procedure TGDIPages.MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin {$ifdef MOUSE_CLICK_PERFORM_ZOOM} // allow overriding of default mouse handling... if not Assigned(OnMouseDown) then begin fZoomIn := (Button = mbLeft); ZoomTimerInternal(X, Y, fZoomIn); fZoomTimer.Enabled := true; end; {$endif} if Button=mbLeft then begin if PopupMenu<>nil then begin with fPreviewSurface do if (XLeft+Width) then with Self.ClientToScreen(Point(X,Y)) do Self.PopupMenu.Popup(X,Y); end; end; if canfocus and not focused then Setfocus; inherited; end; procedure TGDIPages.MouseUp(Button: TMouseButton; Shift: TShiftState; X, Y: Integer); begin {$ifdef MOUSE_CLICK_PERFORM_ZOOM} fZoomTimer.enabled := false; {$else} fButtonDown.X := -1; // so MouseMove() won't scroll paintbox Screen.Cursor := crDefault; {$endif} inherited; end; {$IFNDEF VER100} function TGDIPages.DoMouseWheel(Shift: TShiftState; WheelDelta: Integer; MousePos: TPoint): Boolean; var key: word; begin //treat mousewheel events as if a down-arrow or up-arrow event ... if Shift=[] then begin if WheelDelta < 0 then key := VK_DOWN else key := VK_UP; KeyDown(Key,[]); end else if Shift=[ssCtrl] then ZoomTimerInternal(fMousePos.X,fMousePos.Y,(WheelDelta>0)); Result := true; end; {$ENDIF} constructor TGDIPages.Create(AOwner: TComponent); {$ifdef USEPDFPRINTER} var i: integer; aName: string; {$endif} begin inherited Create(AOwner); SetLength(fTab,MAXTABS); {$ifndef WIN64} // Win64 gdiplus.dll raises some unexpected errors ForceInternalAntiAliased := true; // GDI+ 1.1 ConvertToEmfPlus is buggy {$endif} PopupMenuClass := TPopupMenu; // DoubleBuffered := true; // avoiding flicker is done in Paint method Height := 150; width := 200; ControlStyle := ControlStyle - [csAcceptsControls]; if (AOWner<>nil) and AOWner.InheritsFrom(TCustomForm) then Color := TCustomForm(AOwner).Color else Color := clLtGray; HorzScrollBar.Tracking := True; VertScrollBar.Tracking := True; tabstop := true; Font.Name := 'Tahoma'; Font.Size := 12; fLineSpacing := lsSingle; fOrientation := poPortrait; fUseOutlines := true; fHeaderLines := TObjectList.Create; fFooterLines := TObjectList.Create; {$ifdef MOUSE_CLICK_PERFORM_ZOOM} fZoomTimer := TTimer.create(Self); fZoomTimer.Interval := 200; fZoomTimer.OnTimer := ZoomTimer; fZoomTimer.enabled := false; {$else} fButtonDown.X := -1; // so MouseMove() won't scroll paintbox {$endif} Int64(fCustomPxPerInch) := -1; Int64(fCustomPageSize) := -1; Int64(fCustomNonPrintableOffset) := -1; Int64(fCustomPageMargins.TopLeft) := -1; fHasPrinterInstalled := not (csDesigning in componentState) and PrinterDriverExists; {$ifdef USEPDFPRINTER} fPDFPrinterIndex := -1; if fHasPrinterInstalled then for i := 0 to Printer.Printers.Count-1 do begin aName := Printer.Printers[i]; if pos('doPDF',aName)=1 then begin fPDFPrinterIndex := i; break; end else if pos('PDF',aName)>0 then fPDFPrinterIndex := i; end; fHasPDFPrinterInstalled := (fPDFPrinterIndex<>-1); {$else} fExportPDFUseFontFallBack := true; fExportPDFEncryptionPermissions := PDF_PERMISSION_ALL; fExportPDFEncryptionOwnerPassword := 'SynopsePDFEngine'+SYNOPSE_FRAMEWORK_VERSION; {$endif} GetPrinterParams; // necessary, but will also be updated in BeginDoc() fCanvas := nil; fPreviewSurface := TPagePaintbox.Create(Self); fPreviewSurface.parent := Self; fPreviewSurface.OnPaint := PreviewPaint; fPreviewSurface.OnMouseDown := PreviewMouseDown; fPreviewSurface.OnMouseUp := PreviewMouseUp; fPreviewSurface.OnMouseMove := PreviewMouseMove; fZoomStatus := zsPercent; fZoom := 100; fBookmarks := TStringList.Create; fLinks := TStringList.Create; fOutline := TStringList.Create; fForcedLeftOffset := -1; end; destructor TGDIPages.Destroy; begin Clear; fHeaderLines.free; fFooterLines.free; fPreviewSurface.free; PreviewSurfaceBitmap.Free; {$ifdef MOUSE_CLICK_PERFORM_ZOOM} fZoomTimer.free; {$endif} fOutline.Free; fLinks.Free; fBookmarks.Free; fMetaFileForPage.Free; fCurrentMetaFile.Free; inherited Destroy; end; procedure TGDIPages.Invalidate; begin FreeAndNil(PreviewSurfaceBitmap); // invalidate custom double buffering inherited; end; procedure TGDIPages.BeginDoc; begin if Self=nil then exit; // avoid GPF Clear; GetPrinterParams; // essential as Printers.printer object may have changed fHangIndent := 0; fAlign := taLeft; SetPageMargins(Rect(10,10,10,10)); fVirtualPageNum := 0; Application.ProcessMessages; NewPageInternal; // create a blank page // preview resize in case Printers.printer object has changed case ZoomStatus of zsPercent: zoom := fzoom; zsPageWidth: zoom := PAGE_WIDTH; else zoom := PAGE_FIT; end; fButtonDown.X := -1; // so MouseMove() won't scroll paintbox end; procedure TGDIPages.DrawText(const s: string; withNewLine : boolean); begin DrawTextW(StringToSynUnicode(s), withNewLine); end; procedure TGDIPages.DrawTextW(const s: SynUnicode; withNewLine: boolean); var P, Start: PWideChar; tmpStr: SynUnicode; begin if Self=nil then exit; CheckYPos; if s = '' then begin if withNewLine then NewLine; end else begin // split NewLine characters (#13 or #13#10) into multi lines P := pointer(s); while P^ <> #0 do begin Start := P; while not (ord(P^) in [0, 10, 13]) do Inc(P); SetString(tmpStr, Start, P-Start); if not fInHeaderOrFooter then fCanvasText := fCanvasText+SynUnicodeToString(tmpStr)+#13#10; PrintFormattedLine(tmpStr, FORMAT_DEFAULT, '', '', withNewLine); if P^ = #13 then Inc(P); if P^ = #10 then Inc(P); end; end; end; procedure TGDIPages.DrawTextU(const s: RawUTF8; withNewLine: boolean); begin DrawTextW(UTF8ToSynUnicode(s),withNewLine); end; procedure TGDIPages.DrawTitle(const s: SynUnicode; DrawBottomLine: boolean=false; OutlineLevel: Integer=0; const aBookmark: string=''; const aLink: string=''); var H: integer; str: string; begin if Self=nil then exit; // avoid GPF CheckYPos; SaveLayout; try str := SynUnicodeToString(s); if not fInHeaderOrFooter then fCanvasText := fCanvasText+str+#13#10; // copy as text PrintFormattedLine(s,TitleFlags,aBookMark,aLink); if UseOutlines then AddOutline(str,OutlineLevel,fCurrentTextTop,fCurrentTextPage); if DrawBottomLine then begin H := (GetLineHeight*15) shr 5; dec(fCurrentYPos, H); LineInternal(fPageMarginsPx.left, fPhysicalSizePx.x-fPageMarginsPx.right, false); inc(fCurrentYPos, H*2); end; finally RestoreSavedLayout; end; end; procedure TGDIPages.DrawTextAt(s: SynUnicode; XPos: integer; const aLink: string=''; CheckPageNumber: boolean=false); var i: integer; R: TRect; Size: TSize; begin if (Self=nil) or (s='') then exit; CheckYPos; if CheckPageNumber then begin i := pos(PAGENUMBER,LowerCaseU(s)); if i > 0 then begin Delete(s,i,14); Insert(UTF8ToSynUnicode(Int32ToUtf8(fVirtualPageNum)),s,i); end; end; SetBkMode(fCanvas.Handle,TRANSPARENT); Size := TextExtent(fCanvas,s); R.Left := MmToPrinterPxX(XPos); case falign of taRight: dec(R.Left,Size.cx+1); taCenter: dec(R.Left,Size.cx shr 1+1); end; R.Top := fCurrentYPos; TextOut(fCanvas,R.Left,R.Top,s); if not fInHeaderOrFooter then // copy as text on a new line fCanvasText := fCanvasText+SynUnicodeToString(s)+#13#10; if aLink<>'' then begin R.Right := R.Left+Size.cx; R.Bottom := R.Top+Size.cy; AddLink(aLink,PrinterToMM(R)); end; end; procedure TGDIPages.DrawAngledTextAt(const s: SynUnicode; XPos, Angle: integer); var lf: TLogFont; OldFontHdl,NewFontHdl: HFont; begin if (s='') or (Self=nil) then exit; // avoid GPF CheckYPos; XPos := MmToPrinterPxX(XPos); SetBkMode(fCanvas.Handle,TRANSPARENT); with fCanvas do begin if GetObject(Font.Handle, SizeOf(lf), @lf) = 0 then exit; lf.lfEscapement := Angle * 10; lf.lfOrientation := Angle * 10; lf.lfOutPrecision := OUT_TT_ONLY_PRECIS; NewFontHdl := CreateFontIndirect(lf); OldFontHdl := selectObject(handle,NewFontHdl); end; TextOut(fCanvas,XPos,fCurrentYPos,s); selectObject(fCanvas.handle,OldFontHdl); DeleteObject(NewFontHdl); if not fInHeaderOrFooter then fCanvasText := fCanvasText+s+#13#10; // copy as text on a new line end; function TGDIPages.MmToPrinter(const R: TRect): TRect; begin if Self=nil then begin FillChar(result,sizeof(result),0); exit; // avoid GPF end; result.left := MmToPrinterPxX(R.left); result.top := MmToPrinterPxY(R.top); result.right := MmToPrinterPxX(R.right); result.bottom := MmToPrinterPxY(R.bottom); end; function TGDIPages.PrinterToMM(const R: TRect): TRect; begin if Self=nil then begin FillChar(result,sizeof(result),0); exit; // avoid GPF end; result.left := PrinterPxToMmX(R.left); result.top := PrinterPxToMmY(R.top); result.right := PrinterPxToMmX(R.right); result.bottom := PrinterPxToMmY(R.bottom); end; procedure TGDIPages.DrawBox(left,top,right,bottom: integer); begin if Self=nil then exit; // avoid GPF CheckHeaderDone; left := MmToPrinterPxX(left); top := MmToPrinterPxY(top); right := MmToPrinterPxX(right); bottom := MmToPrinterPxY(bottom); with fCanvas do begin Pen.Width := MulDiv(fDefaultLineWidth,Self.Font.Size,8); if fsBold in Self.Font.style then Pen.Width := Pen.Width +1; MoveTo(left,top); LineTo(right,top); LineTo(right,bottom); LineTo(left,bottom); LineTo(left,top); end; end; procedure TGDIPages.DrawBoxFilled(left,top,right,bottom: integer; Color: TColor); var SavedBrushColor: TColor; begin if Self=nil then exit; // avoid GPF CheckHeaderDone; left := MmToPrinterPxX(left); top := MmToPrinterPxY(top); right := MmToPrinterPxX(right); bottom := MmToPrinterPxY(bottom); with fCanvas do begin Pen.Width := MulDiv(fDefaultLineWidth,Self.Font.Size,8); if fsBold in Self.Font.style then Pen.Width := Pen.Width +1; SavedBrushColor := Brush.Color; brush.Color := Color; rectangle(left,top,right,bottom); Brush.Color := SavedBrushColor; end; end; procedure TGDIPages.DrawBMP(rec: TRect; bmp: TBitmap); begin if Self=nil then exit; // avoid GPF CheckHeaderDone; PrintBitmap(fCanvas, MmToPrinter(rec), bmp); end; procedure TGDIPages.DrawBMP(bmp: TBitmap; bLeft, bWidth: integer; const Legend: string); begin DrawGraphic(bmp,bLeft,bWidth,Legend); end; procedure TGDIPages.DrawGraphic(graph: TGraphic; bLeft, bWidth: integer; const Legend: SynUnicode); var R: TRect; H: Integer; begin if (self=nil) or (graph=nil) or graph.Empty then exit; // avoid GPF // compute position and draw bitmap if bLeft=maxInt then // do center bLeft := PrinterPxToMmX(fPageMarginsPx.Left+ (fPhysicalSizePx.x-fPageMarginsPx.Right-fPageMarginsPx.Left-MmToPrinterPxX(bWidth))shr 1) else inc(bLeft,LeftMargin); R.Left := bLeft; R.Right := bLeft+bWidth; R.Bottom := (graph.Height*bWidth) div graph.Width; if Legend<>'' then H := LineHeight else H := 0; if not HasSpaceFor(R.Bottom+H) then begin NewPage; DoHeader; NewHalfLine; end; R.Top := CurrentYPos; Inc(R.Bottom,R.Top); if graph.InheritsFrom(TBitmap) then DrawBMP(R,graph as TBitmap) else if graph.InheritsFrom(TMetaFile) then DrawMeta(R,graph as TMetaFile); CurrentYPos := R.Bottom; // draw optional caption bottom if Legend<>'' then begin SaveLayout; TextAlign := taCenter; Font.Style := []; Font.Size := (Font.Size*3)shr 2; // smaller font for caption text DrawTextW(Legend); RestoreSavedLayout; end else NewHalfLine; end; procedure TGDIPages.DrawMeta(rec: TRect; meta: TMetafile); var old: Integer; begin if Self=nil then exit; // avoid GPF CheckHeaderDone; rec := MmToPrinter(rec); old := SaveDC(fCanvas.Handle); // ensure safe metafile embedding PlayEnhMetaFile(fCanvas.Handle, meta.Handle, rec); RestoreDC(fCanvas.Handle,old); end; procedure TGDIPages.DrawArrow(Point1, Point2: TPoint; HeadSize: integer; SolidHead: boolean); begin if Self=nil then exit; // avoid GPF CheckHeaderDone; Point1.X := MmToPrinterPxX(Point1.X); Point1.Y := MmToPrinterPxY(Point1.Y); Point2.X := MmToPrinterPxX(Point2.X); Point2.Y := MmToPrinterPxY(Point2.Y); HeadSize := MmToPrinterPxX(max(HeadSize,0)); fCanvas.Pen.Width := MulDiv(fDefaultLineWidth,Self.Font.Size, 8); DrawArrowInternal(fCanvas, Point1, Point2, HeadSize, SolidHead); end; procedure TGDIPages.DrawLine(doubleline: boolean); begin if Self=nil then exit; // avoid GPF CheckHeaderDone; LineInternal(fPageMarginsPx.left, fPhysicalSizePx.x-fPageMarginsPx.right, doubleline); NewLine; end; procedure TGDIPages.DrawDashedLine; var Y: integer; begin if Self=nil then exit; // avoid GPF CheckHeaderDone; with fCanvas do begin Pen.Width := 1; Pen.Style := psDash; Y := fCurrentYPos + (GetLineHeight shr 1) - (Pen.Width shr 1); MoveTo(fPageMarginsPx.left, Y); LineTo(fPhysicalSizePx.x-fPageMarginsPx.right, Y); Pen.Style := psSolid; end; NewLine; end; procedure TGDIPages.NewLine; begin if Self=nil then exit; // avoid GPF CheckHeaderDone; inc(fCurrentYPos, GetLineHeight); fForcedLeftOffset := -1; // fCanvasText := fCanvasText+#13#10; end; procedure TGDIPages.NewHalfLine; begin if Self=nil then exit; // avoid GPF CheckHeaderDone; inc(fCurrentYPos, GetLineHeight shr 1); // fCanvasText := fCanvasText+#13#10; end; procedure TGDIPages.NewLines(count: integer); begin if Self=nil then exit; // avoid GPF CheckHeaderDone; if count < 1 then exit; inc(fCurrentYPos, GetLineHeight* count); // fCanvasText := fCanvasText+#13#10; end; procedure TGDIPages.NewPage(ForceEndGroup: boolean); begin if Self=nil then exit; // avoid GPF if ForceEndGroup then EndGroup else if Assigned(fGroupPage) then raise Exception.Create('Cannot call NewPage within a group block.'); CheckHeaderDone; NewPageInternal; end; procedure TGDIPages.NewPageIfAnyContent; begin if Self=nil then exit; // avoid GPF if fHeaderDone then NewPage; end; procedure TGDIPages.BeginGroup; begin if Self=nil then exit; // avoid GPF if not fHeaderDone then exit; // i.e. haven't even started a page yet if Assigned(fGroupPage) then raise Exception.create('Group already started!'); if not GroupsMustBeOnSamePage then begin // Group "light" implementation if fHeaderDone and not HasSpaceForLines(20) then NewPageInternal; exit; end; //make sure there's room for at least 2 lines otherwise just start a new page //(a group surely contains at least 2 lines ) if not HasSpaceForLines(2) then begin NewPageInternal; exit; end; fGroupVerticalSpace := fPhysicalSizePx.y - fCurrentYPos - fPageMarginsPx.bottom - fFooterHeight; fColumnsUsedInGroup := false; fColumnHeaderInGroup := false; if Assigned(fCanvas) then FreeAndNil(fCanvas); fGroupPage := CreateMetaFile(fPhysicalSizePx.x,fGroupVerticalSpace + fPhysicalOffsetPx.Y); fCanvas := CreateMetafileCanvas(fGroupPage); fGroupVerticalPos := fCurrentYPos; fCurrentYPos := 0; fBeforeGroupText := fCanvasText; fCanvasText := ''; end; procedure TGDIPages.EndGroup; begin if Self=nil then exit; // avoid GPF if not Assigned(fGroupPage) then exit; FreeAndNil(fCanvas); //closes fGroupPage canvas fCanvas := CreateMetafileCanvas(fCurrentMetaFile); fCanvas.Draw(0,0,fCurrentMetaFile); //re-draw the last page fCanvas.Draw(0,fGroupVerticalPos,fGroupPage); //add the Group data FreeAndNil(fGroupPage); //destroy Group metafile inc(fCurrentYPos,fGroupVerticalPos); fCanvasText := fBeforeGroupText+fCanvasText; fBeforeGroupText := ''; end; function TGDIPages.CurrentGroupPosStart: integer; begin if Self=nil then result := 0 else begin if Assigned(fGroupPage) then result := fGroupVerticalPos else result := fPageMarginsPx.top; result := PrinterPXtoMmY(result); end; end; function GetNextItemW(var P: PWideChar): SynUnicode; var S: PWideChar; begin if P=nil then result := '' else begin S := P; while (S^<>#0) and (S^<>',') do inc(S); SetString(result,P,S-P); if S^<>#0 then P := S+1 else P := nil; end; end; function GetNextItemS(var P: PChar): string; var S: PChar; begin if P=nil then result := '' else begin S := P; while (S^<>#0) and (S^<>',') do inc(S); SetString(result,P,S-P); if S^<>#0 then P := S+1 else P := nil; end; end; const // zoom percentages for popup menu entries MenuZoom: array[0..6] of byte = (25,50,75,100,125,150,200); procedure TGDIPages.EndDoc; var PC: PChar; i, n, aX: integer; Men: TGdiPagePreviewButton; M, Root: TMenuItem; Page: TMetaFile; s: string; begin if Self=nil then exit; // avoid GPF fLinksCurrent := -1; EndGroup; DoFooter; if Assigned(fCanvas) then FreeAndNil(fCanvas); n := length(fPages); if (n>1) and not HeaderDone then begin // cancel the last page if it hasn't been started ... FreeAndNil(fCurrentMetaFile); dec(n); SetLength(fPages,n); end else FlushPageContent; if (n>0) and (fPagesToFooterText<>'') then // add 'Page #/#' caption at the specified position for i := 0 to n-1 do begin Page := CreateMetaFile(fPages[i].SizePx.X,fPages[i].SizePx.Y); try fCanvas := CreateMetafileCanvas(Page); fCanvas.Draw(0,0,GetMetaFileForPage(i)); // re-draw the original page s := format(fPagesToFooterText,[i+1,n]); // add 'Page #/#' caption aX := fPagesToFooterAt.X; if aX<0 then aX := fPages[i].SizePx.X-fPages[i].MarginPx.Right; SavedState := fPagesToFooterState; if TextAlign=taRight then dec(aX,fCanvas.TextWidth(s)); with fPages[i] do fCanvas.TextOut(aX,SizePx.Y-MarginPx.bottom-fFooterHeight+ fFooterGap+fPagesToFooterAt.Y,s); FreeAndNil(fCanvas); SetMetaFileForPage(i,Page); // replace page content finally Page.Free; end; end; // OK, all Metafile pages have now been created and added to Pages[] if Assigned(fOnDocumentProducedEvent) then fOnDocumentProducedEvent(Self); // notify report just generated fCurrPreviewPage := 1; if Assigned(fPreviewPageChangedEvent) then fPreviewPageChangedEvent(Self); // notify page changed Invalidate; // update popup menu content if PopupMenu=nil then // caller may have created a TPopupMenu instance PopupMenu := PopupMenuClass.Create(Self) else PopupMenu.Items.Clear; PopupMenu.OnPopup := PopupMenuPopup; PC := pointer(string(sReportPopupMenu1)); // 'Next,Previous,GotoPage,Zoom,Bookmarks,CopyasText,Print,PDF,Close,Pagefit,Pagewidth' for Men := rNextPage to rClose do NewPopupMenuItem(GetNextItemS(PC),-ord(Men)).Enabled := (Men0) then begin Root.Enabled := true; M := Root; for i := 0 to fOutline.Count-1 do with TGDIPagereference(fOutline.Objects[i]) do begin while (M<>Root) and (cardinal(-2000-M.Tag) fCurrentPrinter then begin GetPrinterParams; // also updates fCurrentPrinter UseStretchDraw := true; end else UseStretchDraw := false; PrintFrom := max(PrintFrom-1,0); if PrintTo=0 then PrintTo := high(fPages) else PrintTo := min(PrintTo-1,high(fPages)); {$ifdef PRINTERNEW} // set enhanced TPrinterNew class color/BW or duplex mode with PrinterNew do begin if ForcePrintColorMode<>printColorDefault then begin if (ForcePrintColorMode=printColor) and HasColorMode then ColorMode := true else if ForcePrintColorMode=printBW then ColorMode := false; end; if ForcePrintDuplexMode<>printDuplexDefault then begin if (ForcePrintDuplexMode=printDuplex) and HasDuplexMode then DuplexMode := true else if ForcePrintDuplexMode=printSimplex then DuplexMode := false; end; {$else} with Printer do begin {$endif} if Caption='' then {$ifndef USEPDFPRINTER} if ExportPDFApplication<>'' then Title := ExportPDFApplication else {$endif} Title := Application.Title else Title := Caption; Orientation := Self.Orientation; // just in case fPrinter changed BeginDoc; try Screen.Cursor := crHourGlass; if ForcePrintAsBitmap then begin // very slow printing BMP := TBitmap.Create; try BMP.Width := GetDeviceCaps(handle, PHYSICALWIDTH); BMP.Height := GetDeviceCaps(handle, PHYSICALHEIGHT); for i := PrintFrom to PrintTo do with fPages[i] do begin BMP.Canvas.StretchDraw(Rect(0,0,Bmp.Width,Bmp.Height),GetMetaFileForPage(i)); Canvas.Draw(-OffsetPx.x,-OffsetPx.y,BMP); if i 0) then while (fTabCount > 0) and (tabs[fTabCount-1] = 0) do dec(fTabCount); if (fTabCount > 1) then begin if (tabs[0] <= 0) then raise Exception.Create('Tabs stops must be greater than 0.'); fTab[0] := MmToPrinterPxX(tabs[0]); for i := 1 to fTabCount -1 do if tabs[i] > tabs[i-1] then fTab[i] := MmToPrinterPxX(tabs[i]) else raise Exception.Create('Tabs stops must be in ascending order'); end else if fTabCount = 1 then begin //if one tab set then use that tab as the interval for subsequent tabs for i := 0 to MAXTABS-1 do fTab[i] := MmToPrinterPxX((i+1)*tabs[0]); fTabCount := MAXTABS; end else begin //if no tabs set then default to tabs every 20mm for i := 0 to MAXTABS-1 do fTab[i] := MmToPrinterPxX((i+1)*20); fTabCount := MAXTABS; end; end; function TGDIPages.GetPageMargins: TRect; begin if Self=nil then FillChar(result,sizeof(result),0) else with result do begin Left := PrinterPxToMmX(fPageMarginsPx.left); Top := PrinterPxToMmY(fPageMarginsPx.top); Right := PrinterPxToMmX(fPageMarginsPx.right); Bottom := PrinterPxToMmY(fPageMarginsPx.bottom); end; end; procedure TGDIPages.SetPageMargins(Rect: TRect); begin fPageMarginsPx := MmToPrinter(Rect); if not fHeaderDone then fCurrentYPos := fPageMarginsPx.top; end; function TGDIPages.GetLeftMargin: integer; begin if Self=nil then result := 0 else result := PrinterPxToMmX(fPageMarginsPx.left); end; procedure TGDIPages.SetLeftMargin(const Value: integer); begin if Self=nil then exit; fPageMarginsPx.Left := MmToPrinterPxX(Value); end; function TGDIPages.GetPaperSize: TSize; begin if Self=nil then FillChar(result,sizeof(result),0) else begin result.cx := PrinterPxToMmX(fPhysicalSizePx.X); result.cy := PrinterPxToMmY(fPhysicalSizePx.Y); end; end; procedure TGDIPages.AddLineToHeader(doubleline: boolean); begin if Self=nil then exit; // avoid GPF fHeaderLines.Add(THeaderFooter.Create(Self,doubleline)); end; procedure TGDIPages.AddLineToFooter(doubleline: boolean); begin if Self=nil then exit; // avoid GPF if fFooterLines.Count = 0 then CalcFooterGap; fFooterLines.Add(THeaderFooter.Create(Self,doubleline)); inc(fFooterHeight, GetLineHeight); end; procedure TGDIPages.AddTextToHeader(const s: SynUnicode); begin if Self<>nil then fHeaderLines.Add(THeaderFooter.Create(Self,false,s,true)); end; procedure TGDIPages.AddTextToHeaderAt(const s: SynUnicode; XPos: integer); var Head: THeaderFooter; begin if Self=nil then exit; // avoid GPF Head := THeaderFooter.Create(Self,false,s,true); Head.State.Flags := Head.State.Flags or ((XPos+2) shl 16); fHeaderLines.Add(Head); end; procedure TGDIPages.AddTextToFooter(const s: SynUnicode); begin if Self=nil then exit; // avoid GPF if fFooterLines.Count = 0 then CalcFooterGap; fFooterLines.Add(THeaderFooter.Create(Self,false,s,true)); inc(fFooterHeight, GetLineHeight); end; procedure TGDIPages.AddTextToFooterAt(const s: SynUnicode; XPos: integer); var Foot: THeaderFooter; begin if Self=nil then exit; // avoid GPF //todo - can't print at 0mm from left edge so raise exception if fFooterLines.Count = 0 then CalcFooterGap; Foot := THeaderFooter.Create(Self,false,s,true); Foot.State.Flags := Foot.State.Flags or ((XPos+2) shl 16); fFooterLines.Add(Foot); end; procedure TGDIPages.AddPagesToFooterAt(const PageText: string; XPos,YPosMultiplier: integer); begin if fPagesToFooterText<>'' then exit; // only add once fPagesToFooterText := PageText; if XPos<0 then fPagesToFooterAt.X := -1 else fPagesToFooterAt.X := MmToPrinterPxX(XPos); fPagesToFooterAt.Y := fFooterHeight * YPosMultiplier; fPagesToFooterState := SavedState; end; function TGDIPages.GetColumnCount: integer; begin if Self=nil then result := 0 else result := length(fColumns); end; function TGDIPages.GetColumnInfo(index: integer): TColRec; begin if Self=nil then begin FillChar(result,sizeof(result),0); exit; end; if cardinal(index)>=cardinal(Length(fColumns)) then raise Exception.create('GetColumnInfo: index out of range'); with fColumns[index] do begin result.ColLeft := PrinterPxToMmX(ColLeft); result.ColRight := PrinterPxToMmX(ColRight); result.ColAlign := ColAlign; result.ColBold := ColBold; end; end; procedure TGDIPages.SetColumnAlign(index: integer; align: TColAlign); begin if Self=nil then exit; // avoid GPF if cardinal(index)>=cardinal(Length(fColumns)) then raise Exception.create('SetColumnAlign: index out of range') else fColumns[index].ColAlign := align; end; procedure TGDIPages.SetColumnBold(index: integer); begin if Self=nil then exit; // avoid GPF if cardinal(index)>=cardinal(Length(fColumns)) then raise Exception.create('SetColumnAlign: index out of range') else fColumns[index].ColBold := true; end; procedure TGDIPages.AddColumn(left, right: integer; align: TColAlign; bold: boolean); var n: integer; begin if Self=nil then exit; // avoid GPF left := MmToPrinterPxX(left); right := MmToPrinterPxX(right); n := length(fColumns); if (n>0) and (left exact width) with fColumns[i+n] do begin ColLeft := left; ColRight := right; if PercentWidth[i]<0 then ColAlign := caCenter else ColAlign := align; ColBold := false; end; left := right; end; end; procedure TGDIPages.AddColumnHeaders(const headers: array of SynUnicode; WithBottomGrayLine: boolean=false; BoldFont: boolean=false; RowLineHeight: integer=0; flags: integer=0); var n,i: integer; begin if Self=nil then exit; // avoid GPF if flags=0 then begin if BoldFont then Font.Style := [fsBold]; flags := TextFormatsToFlags; end; n := length(fColumnHeaderList); SetLength(fColumnHeaderList,n+1); fColumnHeaderList[n].flags := flags; SetLength(fColumnHeaderList[n].headers,Length(headers)); for i := 0 to high(headers) do fColumnHeaderList[n].headers[i] := headers[i]; fColumnHeaderPrinted := false; fColumnHeaderPrintedAtLeastOnce := false; fColumnsWithBottomGrayLine := WithBottomGrayLine; fColumnsRowLineHeight := RowLineHeight; if BoldFont then Font.Style := []; end; function CSVToArray(var CSV: PWideChar; n: integer): TSynUnicodeDynArray; var i: integer; begin SetLength(result,n); for i := 0 to n-1 do result[i] := GetNextItemW(CSV); end; procedure TGDIPages.AddColumnHeadersFromCSV(var CSV: PWideChar; WithBottomGrayLine, BoldFont: boolean; RowLineHeight: integer); begin if Self<>nil then // avoid GPF AddColumnHeaders(CSVToArray(CSV,length(fColumns)), WithBottomGrayLine,BoldFont,RowLineHeight); end; procedure TGDIPages.DrawTextAcrossColsFromCSV(var CSV: PWideChar; BackgroundColor: TColor=clNone); begin if Self<>nil then // avoid GPF DrawTextAcrossCols(CSVToArray(CSV,length(fColumns)),[],BackgroundColor); end; /// round inverted color to white or black function clAlways(cl: TColor): TColor; begin if ((GetRValue(longword(cl)) * 2) + (GetGValue(longword(cl)) * 3) + (GetBValue(longword(cl)) * 2)) < 600 then result := clWhite else result := clBlack; end; procedure TGDIPages.DrawTextAcrossCols(const StringArray: array of SynUnicode; BackgroundColor: TColor); begin DrawTextAcrossCols(StringArray,[],BackgroundColor); end; procedure TGDIPages.DrawTextAcrossCols(const StringArray, LinkArray: array of SynUnicode; BackgroundColor: TColor); function HasCRLF(const s: SynUnicode): boolean; var i: integer; begin result := true; for i := 0 to length(s)-1 do if s[i+1]<' ' then exit; result := false; end; function WrapText(s: SynUnicode; MaxWidth: integer; Lines: PSynUnicodeDynArray): integer; var j,k,sp: integer; begin result := 0; // returns the line count if Lines<>nil then SetLength(Lines^,0); repeat if HasCRLF(s) or (TextWidthC(fCanvas,s)>MaxWidth) then begin j := 1; k := 1; sp := 0; while (jnil then begin SetLength(Lines^,length(Lines^)+1); Lines^[high(Lines^)] := copy(s,1,sp-1); end; inc(result); // update lines count s := trim(copy(s,sp,maxInt)); // trim ' ',#13,#10 for next line until s=''; end; var RowRect: TRect; lh: integer; max, i, j, k, c, H, ParenthW, LinesCount, X: integer; s: SynUnicode; line: string; Lines: TSynUnicodeDynArray; PW: PWideChar; PWLen, Options: integer; size: TSize; r: TRect; begin if Self=nil then exit; // avoid GPF max := high(fColumns); if (max<0) or (length(StringArray)=0) then exit; // no column defined if High(StringArray)ColLeft) and (HasCRLF(StringArray[j]) or (TextWidthC(fCanvas,StringArray[j])>ColRight-ColLeft)) then begin k := WrapText(StringArray[j],ColRight-ColLeft,nil); // calculate line counts if k>LinesCount then LinesCount := k; // calculate maximum line count end; if (LinesCount>1) and not HasSpaceForLines(LinesCount) then begin NewPageInternal; CheckHeaderDone; end; end; if (fColumnHeaderList<>nil) and not fColumnHeaderPrinted then begin i := length(fColumnHeaderList) + 2; if not HasSpaceForLines(i) then NewPageInternal; PrintColumnHeaders; end; // prepare column write if Assigned(fGroupPage) then fColumnsUsedInGroup := true; ParenthW := fCanvas.TextWidth(')'); RowRect.Top := fCurrentYPos; RowRect.Bottom := RowRect.Top+lh*LinesCount; RowRect.Right := fColumns[max].ColRight; if BackgroundColor<>clNone then with fCanvas do begin Brush.Style := bsSolid; Brush.Color := BackgroundColor; RowRect.Left := fColumns[0].ColLeft; FillRect(RowRect); Brush.Style := bsClear; Font.Color := clAlways(BackgroundColor); end; // main loop, used to write column content line := ''; for i := 0 to max do begin s := StringArray[i]; line := line+SynUnicodeToString(s)+#9; // add column content + tab for report text if s<>'' then with fColumns[i], fCanvas do if ColRight>ColLeft then begin if ColBold then Font.Style := Font.Style+[fsBold]; Options := ETO_CLIPPED or TextFlags; // unicode version of TextRect() if Brush.Style <> bsClear then Options := Options or ETO_OPAQUE; InternalUnicodeString(s,PW,PWLen,@size); if (ColAlign=caCenter) and (size.cx>ColRight-ColLeft) then // overlapping centered -> draw right aligned RowRect.Left := ColRight-size.cx-ParenthW else case ColAlign of caLeft: begin RowRect.Left := ColLeft; if WordWrapLeftCols and (ColRight>ColLeft) and (HasCRLF(s) or (size.cx>ColRight-ColLeft)) then begin // handle optional left aligned column content word wrap WrapText(s,ColRight-ColLeft,@Lines); // word wrap s into Lines[] dec(RowRect.Left,ParenthW); for j := 0 to high(Lines) do begin InternalUnicodeString(Lines[j],PW,PWLen,@size); if BiDiMode=bdRightToLeft then X := ColRight-size.cx-ParenthW else X := ColLeft; RowRect.Top := fCurrentYPos+lh*j; ExtTextOutW(Handle,X,RowRect.Top,Options,@RowRect,PW,PWLen,nil); end; RowRect.Top := fCurrentYPos; if ColBold then Font.Style := Font.Style-[fsBold]; Continue; // text was written as word-wrap -> write next column end else if BiDiMode=bdRightToleft then RowRect.Left := ColRight-size.cx-ParenthW; end; caCenter: RowRect.Left := ColLeft+(ColRight-ColLeft-size.cx)shr 1; caRight: if BiDiMode=bdLeftToRight then RowRect.Left := ColRight-size.cx-ParenthW; caCurrency: begin if fNegsToParenthesesInCurrCols then InternalUnicodeString(ConvertNegsToParentheses(s),PW,PWLen,@size); RowRect.Left := ColRight-size.cx-ParenthW; // no bdRightToleft handling necessary for caCurrency end; end; dec(RowRect.Left,ParenthW); ExtTextOutW(Handle,RowRect.Left+ParenthW,fCurrentYPos,Options,@RowRect,PW,PWLen,nil); if (i'') then begin r.Left := PrinterPxToMmX(rowrect.Left); r.Top := PrinterPxToMmX(rowrect.Top); r.right := PrinterPxToMmX(rowrect.left+(rowrect.right-fColumns[0].ColLeft) div (max+1)); r.Bottom := PrinterPxToMmX(rowrect.Bottom); AddLink(LinkArray[i],r); end; inc(RowRect.Left,size.cx+ParenthW); if ColBold then Font.Style := Font.Style-[fsBold]; end; end; if not fDrawTextAcrossColsDrawingHeader or not fColumnHeaderPrintedAtLeastOnce then begin line[length(line)] := #13; // overwrite last #9 line := line+#10; fCanvasText := fCanvasText+line; // append columns content to report text end; if BackgroundColor<>clNone then fCanvas.Font.Color := clBlack; if not fDrawTextAcrossColsDrawingHeader and (fColumnsRowLineHeight>LinesCount) then // custom space for Row before bottom gray line LinesCount := fColumnsRowLineHeight; for i := 2 to LinesCount do NewLine; if fColumnsWithBottomGrayLine and (RowRect.Right<>0) then begin c := fCanvas.Pen.Color; fCanvas.Pen.Color := clLtGray; H := lh shr 1-(lh*15)shr 4; dec(fCurrentYPos, H); LineInternal(GetColumnRec(0).ColLeft,RowRect.Right,false); inc(fCurrentYPos, H); fCanvas.Pen.Color := c; end; NewLine; end; procedure TGDIPages.DrawLinesInCurrencyCols(doublelines: boolean); var i: integer; begin if Self=nil then exit; // avoid GPF CheckYPos; if (fColumnHeaderList<>nil) and not fColumnHeaderPrinted then begin i := length(fColumnHeaderList) + 2; if not HasSpaceForLines(i) then NewPageInternal; PrintColumnHeaders; end; for i := 0 to high(fColumns) do with fColumns[i] do if ColAlign = caCurrency then LineInternal(ColLeft, ColRight, doublelines); NewLine; end; procedure TGDIPages.ColumnHeadersNeeded; begin if Self=nil then exit; // avoid GPF fColumnHeaderPrinted := false; end; procedure TGDIPages.Clear; procedure ClearObjects(List: TStringList); var i: integer; begin for i := 0 to List.Count-1 do List.Objects[i].Free; List.Clear; end; begin if Self=nil then exit; // avoid GPF if Assigned(fCanvas) then FreeAndNil(fCanvas); if Assigned(fGroupPage) then FreeAndNil(fGroupPage); FreeAndNil(fCurrentMetaFile); SetLength(fPages,0); ClearObjects(fBookmarks); ClearObjects(fLinks); ClearObjects(fOutline); ClearHeaders; ClearFooters; ClearColumns; SetTabStops([20]); fCanvasText := ''; fLinksCurrent := -1; fSavedCount := 0; end; procedure TGDIPages.ClearHeaders; begin if Self=nil then exit; // avoid GPF fHeaderLines.Clear; end; procedure TGDIPages.ClearFooters; begin if Self=nil then exit; // avoid GPF fFooterLines.Clear; fPagesToFooterText := ''; end; procedure TGDIPages.ClearColumns; begin if Self=nil then exit; // avoid GPF SetLength(fColumns,0); ClearColumnHeaders; end; procedure TGDIPages.ClearColumnHeaders; begin if Self=nil then exit; // avoid GPF fColumnHeaderList := nil; end; function TGDIPages.CreatePictureMetaFile(Width, Height: integer; out MetaCanvas: TCanvas): TMetaFile; begin if Self=nil then result := nil else begin result := CreateMetaFile(MmToPrinterPxX(Width),MmToPrinterPxY(Height)); MetaCanvas := CreateMetafileCanvas(result); end; end; procedure TGDIPages.DrawTextFmt(const s: string; const Args: array of const; withNewLine: boolean); begin DrawText(format(s,Args),withNewLine); end; function TGDIPages.TitleFlags: integer; begin result := ((Font.Size*12) div 10) or FORMAT_BOLD or FORMAT_LEFT; end; function TGDIPages.TextWidth(const Text: SynUnicode): integer; begin if Self=nil then result := 0 else begin if fCanvas=nil then result := TextWidthC(Canvas,Text) else result := TextWidthC(fCanvas,Text); result := PrinterPxToMmX(result); end; end; procedure TGDIPages.ShowPreviewForm(VisibleButtons: TGdiPagePreviewButtons); procedure CopyMenus(Source,Dest: TMenuItem); var i: integer; Sub: TMenuItem; begin for i := 0 to Source.Count-1 do with Source.Items[i] do begin Sub := TMenuItem.Create(PreviewForm); Sub.Tag := Tag; Sub.OnClick := OnClick; Sub.Caption := Caption; Dest.Add(Sub); CopyMenus(Source.Items[i],Sub); end; end; const PANELWIDTH = 128; var OldParent: TWinControl; i,y,W: integer; M: TMenuItem; LeftPanel: TPanel; begin if Self=nil then exit; // avoid GPF PreviewForm := TForm.Create(nil); try PreviewForm.Position := poScreenCenter; PreviewForm.Height := Screen.Height-64; PreviewForm.Caption := Caption; PreviewForm.Font.Name := 'Tahoma'; with PaperSize do begin if cy=0 then y := 1 else y := cy; PreviewForm.Width := (cx*PreviewForm.Height) div y+(64+PANELWIDTH); end; if PreviewForm.Width>Screen.WorkAreaWidth then PreviewForm.WindowState := wsMaximized; LeftPanel := TPanel.Create(PreviewForm); LeftPanel.Parent := PreviewForm; LeftPanel.Width := PANELWIDTH; LeftPanel.Align := alLeft; W := LeftPanel.ClientWidth-8; PreviewPageCountLabel := TLabel.Create(PreviewForm); PreviewPageCountLabel.Transparent := true; PreviewPageCountLabel.Parent := LeftPanel; PreviewPageCountLabel.SetBounds(4,24,W-4,24); PreviewPageCountLabel.Alignment := Classes.taCenter; PreviewPageCountLabel.AutoSize := false; PreviewPageCountLabel.Caption := format(sPageN,[Page,PageCount]); PopupMenuPopup(nil); // refresh PopupMenu.Items[] SetLength(PreviewButtons,PopupMenu.Items.Count); y := 48; for i := 0 to High(PreviewButtons) do begin M := PopupMenu.Items[i]; PreviewButtons[i] := TButton.Create(PreviewForm); with PreviewButtons[i] do begin Parent := LeftPanel; SetBounds(4,y,W,32); Enabled := M.Enabled; Caption := M.Caption; Tag := M.Tag; OnClick := PopupMenuItemClick; if M.Count>0 then begin PopupMenu := PopupMenuClass.Create(PreviewForm); CopyMenus(M,PopupMenu.Items); end; if TGdiPagePreviewButton(i+1) in VisibleButtons then case TGdiPagePreviewButton(i+1) of rPrint: begin Height := 60; inc(y,64); Default := true; end; rClose, rNextPage, rPreviousPage: begin Height := 48; inc(y,52); end; rGotoPage, rZoom, rBookmarks, rExportPDF: inc(y,48); else inc(y,36); end else begin M.Visible := false; Visible := false; end; end; end; OldParent := Parent; Parent := PreviewForm; Align := alClient; Zoom := PAGE_FIT; try PreviewForm.ActiveControl := self; PreviewForm.ShowModal; finally Parent := OldParent; end; finally FreeAndNil(PreviewForm); Finalize(PreviewButtons); end; end; function TGDIPages.GetRightMarginPos: integer; begin result := PrinterPxToMmX(fPhysicalSizePx.x-fPageMarginsPx.right); end; function TGDIPages.NewPopupMenuItem(const aCaption: string; Tag: integer; SubMenu: TMenuItem; OnClick: TNotifyEvent; ImageIndex: integer): TMenuItem; begin if (Self=nil) or (PopupMenu=nil) then begin result := nil; exit; end; result := TMenuItem.Create(PopupMenu); result.Caption := aCaption; result.Tag := Tag; if Assigned(OnClick) then result.OnClick := OnClick else result.OnClick := PopupMenuItemClick; if ImageIndex>=0 then result.ImageIndex := ImageIndex; if SubMenu=nil then PopupMenu.Items.Add(result) else SubMenu.Add(result); end; procedure TGDIPages.PopupMenuItemClick(Sender: TObject); var Comp: TComponent absolute Sender; i: Integer; begin if not Sender.InheritsFrom(TComponent) then exit; if Assigned(OnPopupMenuClick) then if (Comp.Tag=0) or (Comp.Tag>PageCount) then OnPopupMenuClick(Sender); // only notify custom events case -Comp.Tag of ord(rNone): exit; ord(rNextPage): Page := Page+1; ord(rPreviousPage): Page := Page-1; ord(rPageAsText): if Page>0 then Clipboard.AsText := fPages[Page-1].Text; ord(rPrint): if PrintPages(-1,-1) then if PreviewForm<>nil then PreviewForm.Close; ord(rExportPDF): ExportPDF('',true); ord(rClose): if PreviewForm<>nil then PreviewForm.Close; ord(rGotoPage), ord(rZoom), ord(rBookmarks): if Sender.InheritsFrom(TButton) and (PreviewButtons<>nil) then with PreviewButtons[-1-Comp.Tag], PreviewForm.ClientToScreen(Point(Left,Top+Height)) do PopupMenu.Popup(X,Y); 991..1999: // allow -1000-PAGE_WIDTH Zoom := -1000-Comp.Tag; 2000..4000: begin // allow -2000-OutlineIndex i := -2000-Comp.Tag; if cardinal(i)nil then SetFocus; end; procedure TGDIPages.InternalUnicodeString(const s: SynUnicode; var PW: PWideChar; var PWLen: integer; size: PSize); begin if Assigned(OnStringToUnicode) then begin fInternalUnicodeString := OnStringToUnicode(s); PW := pointer(fInternalUnicodeString); PWLen := length(fInternalUnicodeString); end else begin PW := pointer(s); PWLen := length(s); end; if size<>nil then begin size^.cx := 0; size^.cy := 0; GetTextExtentPoint32W(fCanvas.Handle,PW,PWLen,size^); end; end; procedure TGDIPages.PopupMenuPopup(Sender: TObject); var P: PChar; PageFromTo, PageN: string; M,M2: TMenuItem; i,j,k: integer; procedure AddPage(Menu: TMenuItem); begin NewPopupMenuItem(format(PageN,[i]),i,Menu).Enabled := i<>Page; end; begin with PopupMenu.Items do if Count=0 then exit else while Count>ord(rClose) do Delete(ord(rClose)); // delete after "Close" entry PopupMenu.Items[Ord(rNextPage)-1].Enabled := Page1; M := PopupMenu.Items[Ord(rGoToPage)-1]; while M.Count>0 do M.Delete(0); M.Enabled := PageCount>1; if PageCount>=1 then begin // add 'Go to Page' sub menus (group by 10 pages) P := pointer(string(sReportPopupMenu2)); PageFromTo := GetNextItemS(P); // Pages %d to %d PageN := GetNextItemS(P); // Page %d if PageCount>10 then begin for j := 0 to PageCount div 10 do begin k := j*10+1; if k>PageCount then break; M2 := NewPopupMenuItem(format(PageFromTo,[k,k+9]),-800,M); // Tag=-800 -> no OnClick event triggered for this entry for i := k to k+9 do if i>PageCount then break else AddPage(M2); end; end else for i := 1 to PageCount do AddPage(M); end; if Assigned(OnPopupMenuPopup) then OnPopupMenuPopup(Sender); end; {$ifndef USEPDFPRINTER} function TGDIPages.ExportPDFStream(aDest: TStream): boolean; var PDF: TPDFDocument; BackgroundImage: TPdfImage; page: TPdfPage; i: integer; begin try PDF := TPDFDocument.Create(UseOutlines,0,ExportPDFA1, TPdfEncryption.New(ExportPDFEncryptionLevel,ExportPDFEncryptionUserPassword, ExportPDFEncryptionOwnerPassword,ExportPDFEncryptionPermissions)); try PDF.GeneratePDF15File := ExportPDFGeneratePDF15File; //PDF.CompressionMethod := cmNone; with PDF.Info do begin Title := SysUtils.Trim(Caption); if ExportPDFApplication='' then Creator := trim(Application.Title) else Creator := trim(ExportPDFApplication); Author := ExportPDFAuthor; Subject := ExportPDFSubject; Keywords := ExportPDFKeywords; end; PDF.EmbeddedTTF := ExportPDFEmbeddedTTF; {$ifndef NO_USE_UNISCRIBE} PDF.UseUniscribe := ExportPDFUseUniscribe; {$endif} PDF.UseFontFallBack := ExportPDFUseFontFallBack; if ExportPDFFontFallBackName<>'' then PDF.FontFallBackName := ExportPDFFontFallBackName; PDF.ForceJPEGCompression := ExportPDFForceJPEGCompression; if ExportPDFBackground=nil then BackgroundImage := nil else begin BackgroundImage := TPdfImage.Create(PDF,ExportPDFBackground,true); PDF.AddXObject('BackgroundImage',BackgroundImage); end; PDF.SaveToStreamDirectBegin(aDest); for i := 0 to PageCount-1 do with Pages[i] do begin // this loop will do all the magic :) PDF.DefaultPageWidth := PdfCoord(25.4*SizePx.X/fPrinterPxPerInch.x); PDF.DefaultPageHeight := PdfCoord(25.4*SizePx.Y/fPrinterPxPerInch.y); page := PDF.AddPage; if BackgroundImage<>nil then PDF.Canvas.DrawXObject(0,0,page.PageWidth,page.PageHeight,'BackgroundImage'); PDF.Canvas.RenderMetaFile(GetMetaFileForPage(i),Screen.PixelsPerInch/fPrinterPxPerInch.x); PDF.SaveToStreamDirectPageFlush; end; PDF.SaveToStreamDirectEnd; finally PDF.Free; end; result := true; except result := false; end; end; {$endif} function TGDIPages.ExportPDF(aPdfFileName: TFileName; ShowErrorOnScreen: boolean; LaunchAfter: boolean): boolean; {$ifdef USEPDFPRINTER} var DefaultPrinter: integer; {$else} function ValidFileName(const FN: TFileName): TFileName; var i: integer; begin result := FN; for i := length(result) downto 1 do if ord(result[i]) in [ord('/'),ord(':'),ord('\'),ord('.')] then delete(result,i,1); i := length(Result); while (i>0) and (ord(result[i]) in [ord(' '),ord('-')]) do dec(i); SetLength(Result,i); result := trim(result); end; var PDFFileName: TFileName; PDFFile: TFileStream; i: integer; Name: string; TempDir: TFileName; {$endif} begin result := False; if Self=nil then exit; if PageCount>10 then Screen.Cursor := crHourGlass; {$ifdef USEPDFPRINTER} if HasPDFPrinterInstalled then begin DefaultPrinter := Printer.PrinterIndex; Printer.PrinterIndex := fPDFPrinterIndex; PrintPages(0,0); Printer.PrinterIndex := DefaultPrinter; end; {$else} // use the Synopse PDF engine if aPdfFileName='' then with TSaveDialog.Create(nil) do try TempDir := GetCurrentDir; Filter := sPDFFile+' (*.pdf)|*.pdf'; Title := Caption; FileName := ValidFileName(Caption); DefaultExt := 'pdf'; Options := [ofOverwritePrompt,ofHideReadOnly,ofEnableSizing]; repeat if not Execute then exit; PDFFileName := FileName; i := FileCreate(PDFFileName); // test file create (pdf not already opened) if i>0 then break; MessageBox(0,pointer(Format(SIniFileWriteError,[PDFFileName])),nil,MB_ICONERROR); until false; FileClose(i); finally SetCurrentDir(TempDir); // allow unplug e.g. any USB Free; end else PDFFileName := aPdfFileName; try PDFFile := TFileStream.Create(PDFFileName,fmCreate); try ExportPDFStream(PDFFile); finally PDFFile.Free; end; if LaunchAfter then ShellExecute(Application.MainForm.Handle,'open',Pointer(PDFFileName), nil,nil,SW_NORMAL); except on E: Exception do begin // show any error raised during PDF creation if ShowErrorOnScreen then MessageBox(0,pointer(E.Message),Pointer(Name),MB_ICONERROR); exit; end; end; {$endif} result := true; if PageCount>10 then Screen.Cursor := crDefault; end; procedure TGDIPages.WMEraseBkgnd(var Message: TWmEraseBkgnd); var R: TRect; begin Message.Result := 1; // no erasing is necessary after this method call if Message.DC=0 then exit; // erase outside the preview surface R.Left := 0; R.Right := fPreviewSurface.left; R.Top := 0; R.Bottom := Height; FillRect(Message.DC,R,Brush.Handle); R.Left := R.Right+fPreviewSurface.Width; R.Right := Width; FillRect(Message.DC,R,Brush.Handle); R.Left := 0; R.Bottom := fPreviewSurface.Top; FillRect(Message.DC,R,Brush.Handle); R.Top := fPreviewSurface.Top+fPreviewSurface.Height; R.Bottom := Height; FillRect(Message.DC,R,Brush.Handle); end; procedure TGDIPages.AppendRichEdit(RichEditHandle: HWnd; EndOfPagePositions: PIntegerDynArray); var Range: TFormatRange; LogX, LogY, LastChar, MaxLen, OldMap: integer; TextLenEx: TGetTextLengthEx; // RichEdit 2.0 Window Class begin if (Self<>nil) and (fCanvas<>nil) then with Range do begin LogX := GetDeviceCaps(fCanvas.Handle, LOGPIXELSX); LogY := GetDeviceCaps(fCanvas.Handle, LOGPIXELSY); rcPage.Left := (fPageMarginsPx.Left*1440) div LogX; rcPage.Right := ((fPhysicalSizePx.x-fPageMarginsPx.Right)*1440) div LogX; rcPage.Top := ((fPageMarginsPx.Top+fHeaderHeight)*1440) div LogY; rcPage.Bottom := ((fPhysicalSizePx.y-fPageMarginsPx.Bottom-fFooterHeight)*1440) div LogY; CheckHeaderDone; rc := rcPage; rc.Top := (fCurrentYPos*1440) div LogY; LastChar := 0; with TextLenEx do begin flags := GTL_DEFAULT; codepage := CP_ACP; end; MaxLen := SendMessage(RichEditHandle, EM_GETTEXTLENGTHEX, Integer(@TextLenEx), 0); chrg.cpMax := -1; OldMap := SetMapMode(hdc, MM_TEXT); try SendMessage(RichEditHandle, EM_FORMATRANGE, 0, 0); repeat chrg.cpMin := LastChar; hdc := fCanvas.Handle; hdcTarget := hdc; LastChar := SendMessage(RichEditHandle, EM_FORMATRANGE, 1, Integer(@Range)); if EndOfPagePositions<>nil then AddInteger(EndOfPagePositions^,LastChar); if cardinal(LastChar)>=cardinal(MaxLen) then break; NewPageInternal; DoHeader; rc := rcPage; until false; fCurrentYPos := (rc.Bottom*LogY) div 1440; finally SendMessage(RichEditHandle, EM_FORMATRANGE, 0, 0); SetMapMode(hdc, OldMap); end; end; end; function TGDIPages.AddBookMark(const aBookmarkName: string; aYPosition: integer=0): boolean; begin if fBookmarks.IndexOf(aBookmarkName)>=0 then // avoid duplicate bookmarks result := false else begin if aYPosition=0 then begin CheckYPos; aYPosition := fCurrentYPos; end; fBookMarks.AddObject(aBookmarkName, TGDIPagereference.Create(PageCount,0,aYPosition,0,0)); {$ifndef USEPDFPRINTER} fCanvas.MoveTo(0,aYPosition); GDICommentBookmark(fCanvas.Handle,StringToUTF8(aBookmarkName)); {$endif} result := true; end; end; procedure TGDIPages.GotoPosition(aPage: integer; aYPos: integer); begin Page := aPage; HorzScrollbar.Position := 0; VertScrollbar.Position := (aYPos*VertScrollbar.Range) div fPhysicalSizePx.y end; function TGDIPages.GotoBookmark(const aBookmarkName: string): Boolean; var i: integer; begin i := fBookmarks.IndexOf(aBookmarkName); result := i>=0; if result then with TGDIPagereference(fBookmarks.Objects[i]) do GotoPosition(Page,Rect.Top); end; procedure TGDIPages.AddOutline(const aTitle: string; aLevel: Integer; aYPosition: integer=0; aPageNumber: integer=0); begin if aPageNumber=0 then aPageNumber := PageCount; if aYPosition=0 then begin CheckYPos; aYPosition := fCurrentYPos; end; fOutline.AddObject(aTitle, TGDIPagereference.Create(aPageNumber,0,aYPosition,0,aLevel)); {$ifndef USEPDFPRINTER} fCanvas.MoveTo(0,aYPosition); GDICommentOutline(fCanvas.Handle, StringToUtf8(aTitle),aLevel); {$endif} end; procedure TGDIPages.AddLink(const aBookmarkName: string; aRect: TRect; aPageNumber: integer=0); begin if aPageNumber=0 then aPageNumber := PageCount; aRect := MmToPrinter(aRect); with aRect do fLinks.AddObject(aBookmarkName, TGDIPagereference.Create(aPageNumber,Left,Top,Right,Bottom)); {$ifndef USEPDFPRINTER} GDICommentLink(fCanvas.Handle,StringToUtf8(aBookmarkName),aRect); {$endif} end; { TGDIPagereference } constructor TGDIPagereference.Create(PageNumber: integer; Left, Top, Right, Bottom: integer); begin inherited Create; Page := PageNumber; Rect.Left := Left; Rect.Top := Top; Rect.Right := Right; Rect.Bottom := Bottom; end; procedure TGDIPagereference.ToPreview(Pages: TGDIPages); var W,H: integer; begin // do it for all pages (zoom is not reset between page shift) if Page<>0 then with Pages.fPreviewSurface do begin W := Width-GRAY_MARGIN*2; H := Height-GRAY_MARGIN*2; Preview.Left := GRAY_MARGIN+(Rect.Left*W) div Pages.fPhysicalSizePx.x; Preview.Right := GRAY_MARGIN+(Rect.Right*W) div Pages.fPhysicalSizePx.x; Preview.Top := GRAY_MARGIN+(Rect.Top*H) div Pages.fPhysicalSizePx.y; Preview.Bottom := GRAY_MARGIN+(Rect.Bottom*H) div Pages.fPhysicalSizePx.y; end; end; { THeaderFooter } constructor THeaderFooter.Create(Report: TGDIPages; doubleline: boolean; const aText: SynUnicode=''; IsText: boolean=false); begin Text := aText; State := Report.SavedState; if not IsText then if doubleline then State.Flags := State.Flags or FORMAT_DOUBLELINE else State.Flags := State.Flags or FORMAT_SINGLELINE; end; {$ifdef RENDERPAGES} { TRenderPages } procedure TRenderPages.Clear; begin inherited; fRdrCol.Clear; fFontCache.Clear; end; constructor TRenderPages.Create(AOwner: TComponent); begin inherited; fRdr := TRenderBox.Create(self); fRdrCol := TObjectList.Create; fFontCache := TObjectList.Create; end; destructor TRenderPages.Destroy; begin inherited; FreeAndNil(fRdrCol); FreeAndNil(fRdr); FreeAndNil(fFontCache); end; function TRenderPages.GetCurrentFontCacheIndex: integer; var F: TFont; begin for result := 0 to fFontCache.Count-1 do with TFont(fFontCache.List[result]) do if (Color=Font.Color) and (Height=Font.Height) and (Style=Font.Style) and (Name=Font.Name) then exit; F := TFont.Create; F.Assign(Font); result := fFontCache.Add(F); end; function TRenderPages.GetCurrentFontCacheIndexAndSelect: integer; var H: HDC; begin result := GetCurrentFontCacheIndex; H := Canvas.Handle; with TFont(fFontCache[result]) do begin // same as TCanvas.CreateFont SelectObject(H,Handle); SetTextColor(H,ColorToRGB(Color)); if length(fFontCacheSpace)0 then CurrentYPos := CurrentYPos+ParagraphBefore; Rdr.Flush(fPageMarginsPx.left,fCurrentYPos,false,0,False); if ParagraphAfter<>0 then CurrentYPos := CurrentYPos+ParagraphAfter; end; procedure TRenderPages.RdrPard; var State: TSavedState; begin if self=nil then exit; fAlign := taLeft; SetSavedRender(fDefaultStateRender); State := SavedState; if State.Flags<>fDefaultState.Flags then begin State.Flags := fDefaultState.Flags; SavedState := State; // will set FORMAT_RIGHT/CENTER/JUSTIFIED end; end; procedure TRenderPages.RdrPardPlain; begin if self=nil then exit; if fDefaultState.FontName='' then RdrPlain else SavedState := fDefaultState; SetSavedRender(fDefaultStateRender); end; procedure TRenderPages.RdrPlain; var State: TSavedState; begin if self=nil then exit; if (fDefaultState.FontName='') or (fDefaultState.Flags=0) then begin Font.Size := 12; Font.Style := []; Font.Color := clBlack; end else begin State := fDefaultState; State.Flags := // void FORMAT_RIGHT/CENTER/JUSTIFIED (State.Flags and not (FORMAT_RIGHT or FORMAT_CENTER or FORMAT_JUSTIFIED)) or // keep current FORMAT_RIGHT/CENTER/JUSTIFIED (TextFormatsToFlags and (FORMAT_RIGHT or FORMAT_CENTER or FORMAT_JUSTIFIED)); SavedState := State; end; end; procedure TRenderPages.RdrSetCurrentStateAsDefault; begin fDefaultState := SavedState; fDefaultStateRender := GetSavedRender; end; function TRenderPages.RdrTableBegin(const PercentWidth: array of integer): Boolean; var i, sum, w: integer; col: TRenderBox; begin result := (Self<>nil) and (fRdrCol.Count=0); if not result then exit; sum := 0; for i := 0 to high(PercentWidth) do inc(sum,PercentWidth[i]); if sum<=0 then begin result := false; exit; end; w := fPhysicalSizePx.x-fPageMarginsPx.Left-fPageMarginsPx.right; for i := 0 to high(PercentWidth) do begin col := TRenderBox.Create(self); col.Width := (w*100)div sum; fRdrCol.Add(col); end; end; function TRenderPages.RdrTableColumn(aColumnIndex: Integer): TRenderBox; begin if (Self=nil) or (cardinal(aColumnIndex)>=cardinal(fRdrCol.Count-1)) then result := nil else result := TRenderBox(fRdrCol.List[aColumnIndex]); end; function TRenderPages.RdrTableEnd: Boolean; begin result := (Self<>nil) and (fRdrCol.Count>0); if not result then exit; fRdrCol.Clear; end; procedure TRenderPages.RestoreSavedLayout; begin if Self=nil then exit; // avoid GPF if fSavedCount>=length(fSavedRender) then Setlength(fSavedRender,fSavedCount+20); fSavedRender[fSavedCount] := GetSavedRender; inherited; end; procedure TRenderPages.SaveLayout; begin if Self=nil then exit; // avoid GPF if fSavedCount<=0 then exit; inherited; SetSavedRender(fSavedRender[fSavedCount]); end; procedure TRenderPages.SetSavedRender(const State: TSavedStateRender); begin with State do begin ParagraphFirstLineIndent := FirstLineIndent; ParagraphBefore := Before; ParagraphAfter := After; ParagraphRightIndent := RightIndent; ParagraphLeftIndent := LeftIndent; end; end; { TRenderBox } procedure TRenderBox.AddText(const s: string); var PW: PWideChar; PWLen: integer; begin if (self=nil) or (Owner=nil) then exit; // avoid GPF // convert text to unicode and add to fText[] internal buffer Owner.InternalUnicodeString(StringToSynUnicode(s),PW,PWLen,nil); AddText(PW,PWLen); end; procedure TRenderBox.AddText(PW: PWideChar; PWLen: integer); var PDBeg, PD: PWideChar; aFontIndex, aFontSpaceWidth: integer; begin if (self=nil) or (Owner=nil) or (PWLen=0) then exit; // avoid GPF if PWLen+fTextLen>length(fText) then SetLength(fText,length(fText)+PWLen+1024); PD := @fText[fTextLen]; inc(fTextLen,PWLen); // create associated word markers aFontIndex := Owner.GetCurrentFontCacheIndexAndSelect; aFontSpaceWidth := Owner.fFontCacheSpace[aFontIndex].cx; repeat PDBeg := PD; while true do case integer(PW^) of 0, 32: break; 1..31: if PD<>PDBeg then break else Inc(PW); else begin PD^ := PW^; inc(PW); inc(PD); end; end; if fBoxCount>=Length(fBox) then SetLength(fBox,fBoxCount+200); with fBox[fBoxCount] do begin TextOffset := PD-@fText[0]; TextLength := PD-PDBeg; FontIndex := aFontIndex; FontSpaceWidth := aFontSpaceWidth; GetTextExtentPoint32W(Owner.Canvas.Handle,PDBeg,TextLength,Size); SpaceAfterCount := 0; while integer(PW^) in [1..32] do begin PD^ := ' '; inc(PW); inc(PD); inc(SpaceAfterCount); end; LinkNumber := fLinksBookMarkNameCurrent; end; inc(fBoxCount); until PW^=#0; end; procedure TRenderBox.Clear; begin if Self=nil then exit; Finalize(fLinksBookMarkName); Finalize(fBox); fLayoutCount := 0; fBoxCount := 0; fTextLen := 0; fHeight := 0; fLinksBookMarkNameCurrent := 0; end; constructor TRenderBox.Create(Owner: TRenderPages); begin fOwner := Owner; fBiDiMode := Owner.BiDiMode; fOwnerFont := Owner.Font; end; /// format the already inserted text into the TRenderPages owner // - this TRenderBox text content will be cleared at the end of this method // - you don't have to call it usualy: use Owner.RdrParagraph instead // - by default, will render top aligned to the X=Left/Y=Top position // - for vertical alignment, specify an height in ForcedHeightBottomCentered // then will be centered if ForcedAtBottom=false, or bottom aligned if true // - if CurrentPageOnly is true, will only flush the content which will fit on // the current page - then the fLayout[] array will contain remaining boxes; otherwise, // this will flush all content to multiple pages procedure TRenderBox.Flush(Left, Top: Integer; CurrentPageOnly: boolean; ForcedHeightBottomCentered: Integer; ForcedAtBottom: boolean); var H, Y, i, fitLayout: integer; WillBreak: boolean; begin if (self=nil) or (Owner=nil) then exit; // avoid GPF H := GetHeight; // will populate fLayout[] from fBox[] if necessary { render on document Canvas } WillBreak := false; fitLayout := fLayoutCount-1; for i := 0 to fitLayout do if fLayout[i].Top>=H then begin fitLayout := i-1; WillBreak := true; break; end; { TODO : handle TGDIPagereference creation from fLayout[].LastBox.LinkNumber } // reset internal TRenderBox content Clear; end; function TRenderBox.GetHeight: integer; begin if self=nil then result := 0 else begin if fHeight=0 then // need to recalculate the layout to refresh the resulting Height InternalRender; result := fHeight; end; end; procedure TRenderBox.InternalRender; var ndx, ndxFirst: integer; X, Y, H, W, LineW: integer; txt: PWideChar; Box: PRenderBoxWord; LineLayout, LineNdx: integer; procedure AddLayout(DoLineFeed, LastLine: boolean); var nspace, Adjust, i, j, aLeft, n: Integer; align: TTextAlign; TmpLayout: array of TRenderBoxLayout; begin if fLayoutCount>=length(fLayout) then SetLength(fLayout,fLayoutCount+50); with fLayout[fLayoutCount] do begin Text := txt; with Box^ do txt := @fText[TextOffset+TextLength]; // txt^ points to ' ' after text Length := txt-Text; Left := X; Top := Y; Width := W; LineIndex := LineNdx; LastBox := Box; BreakExtra := 0; BreakCount := 0; end; if DoLineFeed then begin // we must handle the line feed layout Align := Owner.TextAlign; Adjust := LineW-(X+W); if (Adjust<=0) or // force left align if wider than expected (i.e. overpass right margin) (LastLine and (Align=taJustified)) then // last line of justified paragraph is never justified Align := taLeft; if BiDiMode=bdRightToLeft then begin case Align of taLeft: Align := taRight; taRight: Align := taLeft; end; n := fLayoutCount-LineLayout+1; if n>1 then begin // multi layouts: change logical to visual order for RTL languages SetLength(TmpLayout,n); Move(fLayout[LineLayout],TmpLayOut[0],n*sizeof(TmpLayOut[0])); aLeft := fLayout[LineLayout].Left; for i := 0 to n-1 do begin move(TmpLayout[i],fLayout[fLayoutCount-i],sizeof(TmpLayOut[0])); with fLayout[fLayoutCount-i] do begin Left := aLeft; Inc(aLeft,Width+LastBox^.FontSpaceWidth*LastBox^.SpaceAfterCount); end; end; end; end; case Align of taRight: for i := LineLayout to fLayoutCount do inc(fLayout[i].Left,Adjust); taCenter: begin Adjust := Adjust div 2; for i := LineLayout to fLayoutCount do inc(fLayout[i].Left,Adjust); end; taJustified: if Adjust>0 then begin // compute SetTextJustification() values and update Left position aLeft := fLayout[LineLayout].Left; nspace := 0; for i := LineLayout to fLayoutCount do with fLayout[i] do begin for j := 0 to Length-1 do if Text[j]=' ' then inc(BreakCount); inc(nspace,BreakCount); end; if nspace>0 then for i := LineLayout to fLayoutCount do with fLayout[i] do begin Left := aLeft; BreakExtra := (Adjust*BreakCount) div nspace; dec(Width,LastBox^.FontSpaceWidth*BreakCount-BreakExtra); inc(aLeft,Width); end; end; end; for i := LineLayout to fLayoutCount do fLayout[i].Height := H; // same height for all fLayout[] of this line with Owner do X := MmToPrinterPxX(ParagraphLeftIndent); inc(Y,H); H := 0; // force recalculate line height LineLayout := fLayoutCount; inc(LineNdx); end else begin // just append this "word" box to fLayout[fLayoutCount] with Box^ do // compute next position inc(X,W+FontSpaceWidth*SpaceAfterCount); end; inc(fLayoutCount); ndxFirst := ndx+1; W := 0; end; begin // compute TRenderBoxWord.X/Y and fHeight fHeight := 0; fLayoutCount := 0; SetLength(fLayout,fBoxCount shr 2); if fBoxCount=0 then exit; // no text added with Owner do begin X := MmToPrinterPxX(ParagraphFirstLineIndent); LineW := self.fWidth-MmToPrinterPxX(ParagraphRightIndent); end; LineNdx := 0; Y := 0; H := 0; W := 0; LineLayout := 0; txt := @fText[0]; ndxFirst := 0; for ndx := 0 to fBoxCount-1 do begin Box := @fBox[ndx]; if Box^.Size.cy>H then H := Box^.Size.cy; inc(W,Box^.Size.cx); if ndx=fBoxCount-1 then // reached last box -> flush pending line content AddLayout(true,true) else with fBox[ndx+1] do if X+W+Size.cx>LineW then // not enough space in current line -> flush+adjust and go to next line AddLayout(true,false) else if (FontIndex<>Box^.FontIndex) or (LinkNumber<>Box^.LinkNumber) then // text formatting or Link will change -> add a layout box AddLayout(false,false); end; fHeight := Y; end; procedure TRenderBox.LinkBegin(const aBookmarkName: string); begin if (self=nil) or (Owner=nil) then exit; // avoid GPF LinkEnd; // no nested links fLinksBookMarkNameCurrent := Length(fLinksBookMarkName)+1; SetLength(fLinksBookMarkName,fLinksBookMarkNameCurrent); fLinksBookMarkName[fLinksBookMarkNameCurrent-1] := aBookmarkName; end; function TRenderBox.LinkEnd: boolean; begin result := false; if (self=nil) or (Owner=nil) or (fLinksBookMarkNameCurrent=0) then exit; // avoid GPF fLinksBookMarkNameCurrent := 0; result := true; end; procedure TRenderBox.NewLine; begin if (self=nil) or (Owner=nil) then exit; // avoid GPF end; procedure TRenderBox.Pard; begin if (self<>nil) and (Owner<>nil) then // avoid GPF Owner.RdrPard; end; procedure TRenderBox.PardPlain; begin if (self<>nil) and (Owner<>nil) then // avoid GPF Owner.RdrPardPlain; end; procedure TRenderBox.Plain; begin if (self<>nil) and (Owner<>nil) then // avoid GPF Owner.RdrPlain; end; {$endif RENDERPAGES} end.