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594 lines
16 KiB
ObjectPascal
594 lines
16 KiB
ObjectPascal
unit U_PDFView;
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interface
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uses
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U_Constants, U_BaseConstants, U_LNG, Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
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Dialogs, StdCtrls, siComp, siLngLnk, gtScrollingPanel, gtPDFViewer,
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gtPDFClasses, gtCstPDFDoc, gtExPDFDoc, gtExProPDFDoc, gtPDFDoc, ExtCtrls,
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RzPanel, Buttons, gtViewerTypes, gtPDFConsts, jpeg, Math, RzButton,
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RzRadChk, ImgList;
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type
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TF_PDFView = class(TForm)
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siLangLinked1: TsiLangLinked;
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RzPanel1: TRzPanel;
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RzPanel2: TRzPanel;
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gbOkCancel: TRzPanel;
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gtPDFDoc: TgtPDFDocument;
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gtPDFViewer: TgtPDFViewer;
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BtnOpenfile: TSpeedButton;
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BtnActive: TSpeedButton;
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BtnActualSize: TSpeedButton;
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btnFitWidth: TSpeedButton;
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BtnFitPage: TSpeedButton;
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BtnFirstPage: TSpeedButton;
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BtnPriorPage: TSpeedButton;
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lbGoToPage: TLabel;
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EdtGotoPage: TEdit;
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lbPageOf: TLabel;
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BtnNextPage: TSpeedButton;
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BtnLastPage: TSpeedButton;
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BtnZoomIn: TSpeedButton;
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edZoom: TEdit;
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BtnZoomOut: TSpeedButton;
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BtnPrint: TSpeedButton;
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lbPageCount: TLabel;
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TimerGotoPage: TTimer;
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btOK: TRzBitBtn;
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btCancel: TRzBitBtn;
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TimerDocOpenDialog: TTimer;
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cbConsiderScale: TRzCheckBox;
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BtnClkRotate: TSpeedButton;
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BtnResetRotate: TSpeedButton;
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ImageList1: TImageList;
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BtnUnClkRotate: TSpeedButton;
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procedure gtPDFViewerPageChange(Sender: TgtPDFViewer;
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const CurrentPageIndex: TPageIndex);
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procedure BtnOpenfileClick(Sender: TObject);
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procedure BtnActiveClick(Sender: TObject);
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procedure BtnFirstPageClick(Sender: TObject);
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procedure BtnActualSizeClick(Sender: TObject);
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procedure btnFitWidthClick(Sender: TObject);
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procedure BtnFitPageClick(Sender: TObject);
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procedure BtnPriorPageClick(Sender: TObject);
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procedure EdtGotoPageKeyPress(Sender: TObject; var Key: Char);
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procedure TimerGotoPageTimer(Sender: TObject);
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procedure BtnNextPageClick(Sender: TObject);
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procedure BtnLastPageClick(Sender: TObject);
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procedure BtnZoomInClick(Sender: TObject);
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procedure edZoomChange(Sender: TObject);
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procedure edZoomExit(Sender: TObject);
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procedure edZoomKeyPress(Sender: TObject; var Key: Char);
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procedure BtnZoomOutClick(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure gbOkCancelResize(Sender: TObject);
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procedure TimerDocOpenDialogTimer(Sender: TObject);
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procedure BtnPrintClick(Sender: TObject);
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procedure gtPDFDocPassword(Sender: TObject; var Password: String;
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var Continue: Boolean; const Tries: Integer);
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procedure FormCreate(Sender: TObject);
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procedure BtnClkRotateClick(Sender: TObject);
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procedure BtnResetRotateClick(Sender: TObject);
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procedure BtnUnClkRotateClick(Sender: TObject);
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private
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FOpenDialogOnShow: Boolean;
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FActiveViewAfterOpen: Boolean;
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FLastPassTries: Integer;
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FPassAllTries: Integer;
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FFile: String;
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procedure DefineRatateGlyph;
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function GetRotationAngle: Integer;
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function UpdateButton: string;
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procedure UpdateStatusBar;
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function OpenFileDialog(aActiveView: Boolean): Boolean;
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procedure LoadPDF(const aFile: string);
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procedure PrepareForm;
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public
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function GetDocBitmap(const aTitle: String; aFile: String = ''): TBitmap;
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function GetDocJpeg(const aTitle: String): TJPEGImage;
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end;
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function CreateFPDFView: TF_PDFView;
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const
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ActiveBtnHint: array[False..True] of string = (cPDFView_Msg2, cPDFView_Msg1);
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ZoomIncrement = 25;
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var
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F_PDFView: TF_PDFView;
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implementation
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Uses U_BaseCommon, U_Common, USCS_Main;
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{$R *.dfm}
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function CreateFPDFView: TF_PDFView;
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begin
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if F_PDFView = nil then
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begin
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F_PDFView := TF_PDFView.Create(Application);
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FSCS_Main.SetCursors; //11.07.2013 - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> PDF <20><> <20><><EFBFBD><EFBFBD><EFBFBD>
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end;
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Result := F_PDFView;
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end;
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{ TF_PDFView }
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function TF_PDFView.OpenFileDialog(aActiveView: Boolean): Boolean;
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var
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OpenDialog: TOpenDialog;
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begin
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Result := false;
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OpenDialog := TOpenDialog.Create(nil);
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try
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OpenDialog.Title := cPDFView_Msg3+'...';
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OpenDialog.DefaultExt := '*.'+enPdf;
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OpenDialog.Filter := cProgressExp_Msg9_1 +'|'+
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GetDialogFilter(exdAll, '*');
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OpenDialog.Options := OpenDialog.Options - [ofNoChangeDir] + [ofOverwritePrompt];
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if OpenDialog.Execute then
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begin
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Result := True;
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LoadPDF(OpenDialog.FileName);
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end;
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finally
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FreeAndNil(OpenDialog);
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end;
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end;
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procedure TF_PDFView.LoadPDF(const aFile: string);
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begin
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if gtPDFDoc.IsLoaded then begin
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gtPDFDoc.Reset;
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end;
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FLastPassTries := FPassAllTries + 1; // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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gtPDFViewer.Active := false;
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gtPDFDoc.Filename := aFile;
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if gtPDFDoc.IsLoaded then
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begin
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// 19/07/2017 -- <20><><EFBFBD><EFBFBD> 200 - <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>, <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD> <20><><EFBFBD>
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// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 5-6 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> OUt OF MEMORY
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//gtPDFViewer.Zoom := 200;
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gtPDFViewer.Zoom := 100;
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//
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BtnPrint.Enabled := True;
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gtPDFViewer.PageNo := 1;
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gtPDFViewer.Active := False;
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gtPDFViewer.RotationAngle := ra0;
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gtPDFViewer.Active := True; //aActiveView;
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UpdateButton;
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UpdateStatusBar;
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EdtGotoPage.SetFocus;
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DefineRatateGlyph;
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//LBmp := TBitmap.Create;
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//ImageList1.GetBitmap(0, LBmp);
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//BtnClkRotate.Glyph.Assign(LBmp);
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//LBmp.Free;
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end;
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end;
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function TF_PDFView.GetDocBitmap(const aTitle: String; aFile: String = ''): TBitmap;
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var
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pSize: TgtPageSize;
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dpi: Integer;
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//Rotation: Integer;
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Rotation: Double;
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aImageProperties: TgtImageProperties;
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begin
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Result := nil;
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Caption := aTitle;
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FFile := aFile;
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FOpenDialogOnShow := aFile = '';
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FActiveViewAfterOpen := false;
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PrepareForm;
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if ShowModal = mrOk then
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begin
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if gtPDFDoc.IsLoaded then
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begin
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gtPDFViewer.Active := false;
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Application.ProcessMessages;
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BeginProgress;
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try
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//pSize := gtPDFDoc.GetPageSize(gtPDFViewer.PageNo, muPixels);
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//Result.Width := Trunc(pSize.Width);
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//Result.Height := Trunc(pSize.Height);
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//gtPDFDoc.RenderToCanvas(gtPDFViewer.PageNo, Result.Canvas, tpDefault);
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////gtPDFDoc.RenderToCanvas(gtPDFViewer.PageNo, Result.Canvas, tpAlignment);
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Rotation := GetRotationAngle; //gtPDFDoc.GetPageRotate(gtPDFViewer.PageNo);
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(*
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aImageProperties := TgtImageProperties.Create;
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aImageProperties.BMPpixelformat := pf16bit;
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gtPDFDoc.SaveAsImage('1', itBitmap, 'c:\', 'ddd', aImageProperties);
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*)
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//AddExceptionToLog('Memory before reading PDF');
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if cbConsiderScale.Checked then
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begin
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try
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//gtPDFDoc.
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dpi := 72;
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dpi := Round(gtPDFViewer.Zoom / 100 * dpi);
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Result := gtPDFDoc.GetBitmap(gtPDFViewer.PageNo, dpi, dpi, 0);
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//Result.SaveToFile('c:\pdf_bitmap_'+IntToStr(dpi)+'.bmp');
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except
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try
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dpi := 72;
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dpi := Round(gtPDFViewer.Zoom / 100 * dpi * 0.75 );
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Result := gtPDFDoc.GetBitmap(gtPDFViewer.PageNo, dpi, dpi, 0);
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except
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try
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dpi := 72;
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dpi := Round(gtPDFViewer.Zoom / 100 * dpi * 0.5 );
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Result := gtPDFDoc.GetBitmap(gtPDFViewer.PageNo, dpi, dpi, 0);
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except
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on E: Exception do AddExceptionToLogEx('F_PDFView.GetDocBitmap', E.Message, true);
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end;
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end;
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end;
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end
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else
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begin
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try
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Result := TBitmap.Create;
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pSize := gtPDFDoc.GetPageSize(gtPDFViewer.PageNo, muPixels);
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Result.Width := Trunc(pSize.Width);
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Result.Height := Trunc(pSize.Height);
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gtPDFDoc.RenderToCanvas(gtPDFViewer.PageNo, Result.Canvas, tpDefault, 0);
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except
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on E: Exception do AddExceptionToLogEx('F_PDFView.GetDocBitmap', E.Message, true);
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end;
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end;
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if Rotation <> 0 then
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try
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RotateBitmap(Result, Rotation, clWhite);
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except
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on E: Exception do AddExceptionToLogEx('RotateBitmap', E.Message, true);
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end;
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finally
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EndProgress;
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end;
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gtPDFDoc.FileName := '';
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end;
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end;
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end;
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function TF_PDFView.GetDocJpeg(const aTitle: String): TJPEGImage;
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var
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Bmp: TBitmap;
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begin
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Result := nil;
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Bmp := GetDocBitmap(aTitle);
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if Bmp <> nil then
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begin
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Result := TJPEGImage.Create;
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Result.CompressionQuality := 100;
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Result.Assign(bmp);
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Bmp.Free;
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end;
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end;
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procedure TF_PDFView.gtPDFViewerPageChange(Sender: TgtPDFViewer;
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const CurrentPageIndex: TPageIndex);
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begin
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.DefineRatateGlyph;
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var
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LBmp: TBitmap;
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begin
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LBmp := TBitmap.Create;
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{if (gtPDFViewer.RotationAngle = ra0) then
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begin
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ImageList1.GetBitmap(0, LBmp);
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BtnClkRotate.Glyph.Assign(LBmp);
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end
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else if (gtPDFViewer.RotationAngle = raCW90) then
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begin
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ImageList1.GetBitmap(1, LBmp);
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BtnClkRotate.Glyph.Assign(LBmp);
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end
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else if (gtPDFViewer.RotationAngle = raCW180) then
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begin
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ImageList1.GetBitmap(2, LBmp);
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BtnClkRotate.Glyph.Assign(LBmp);
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end
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else if (gtPDFViewer.RotationAngle = raCW270) then
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begin
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ImageList1.GetBitmap(3, LBmp);
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BtnClkRotate.Glyph.Assign(LBmp);
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end;}
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ImageList1.GetBitmap(Ord(gtPDFViewer.RotationAngle), LBmp);
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BtnClkRotate.Glyph.Assign(LBmp);
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LBmp.Free;
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end;
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function TF_PDFView.GetRotationAngle: Integer;
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begin
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Result := 0;
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case gtPDFViewer.RotationAngle of
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ra0:
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Result := 0;
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raCW90:
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Result := 90;
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raCW180:
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Result := 180;
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raCW270:
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Result := 270;
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raACW90:
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Result := 270;
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raACW180:
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Result := 180;
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raACW270:
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Result := 90;
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end;
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end;
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function TF_PDFView.UpdateButton: string;
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begin
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BtnFirstPage.Enabled := not gtPDFViewer.IsFirst;
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BtnPriorPage.Enabled := not gtPDFViewer.IsFirst;
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BtnNextPage.Enabled := not gtPDFViewer.IsLast;
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BtnLastPage.Enabled := not gtPDFViewer.IsLast;
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BtnActive.Enabled := True;
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BtnActive.Down := Not gtPDFViewer.Active;
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BtnActive.Hint := ActiveBtnHint[BtnActive.down];
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BtnFitPage.Enabled := True;
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btnFitWidth.Enabled := True;
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BtnActualSize.Enabled := True;
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if round(gtPDFViewer.Zoom) = round(gtPDFViewer.GetStandardZoomValue(sztActualSize)) then
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BtnActualSize.Down := True;
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if round(gtPDFViewer.Zoom) = round(gtPDFViewer.GetStandardZoomValue(sztFitPage)) then
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BtnFitPage.Down := True;
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if round(gtPDFViewer.Zoom) = round(gtPDFViewer.GetStandardZoomValue(sztFitWidth)) then
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btnFitWidth.Down := True;
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//SearchButton.Enabled := True;
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BtnZoomOut.Enabled := True;
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BtnZoomIn.Enabled := True;
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EdtGotoPage.Enabled := True;
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edZoom.Enabled := True;
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BtnClkRotate.Enabled := True;
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BtnResetRotate.Enabled := True;
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EdtGotoPage.Text := IntToStr(gtPDFViewer.PageNo);
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//Label2.Caption := ' of ' + IntToStr(gtPDFViewer1.PDFDocument.PageCount);
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lbPageCount.Caption := IntToStr(gtPDFViewer.PDFDocument.PageCount);
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end;
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procedure TF_PDFView.UpdateStatusBar;
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begin
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edZoom.Text := FormatFloat(GetDisplayFormatForFloatByPrecision(2), gtPDFViewer.Zoom);
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BtnZoomIn.Enabled := (StrToFloat_My(edZoom.Text)) <> 1 ;
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end;
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procedure TF_PDFView.BtnOpenfileClick(Sender: TObject);
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begin
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OpenFileDialog(Not BtnActive.Down);
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end;
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procedure TF_PDFView.BtnActiveClick(Sender: TObject);
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begin
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//BtnActive.Hint := ActiveBtnHint[BtnActive.down];
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gtPDFViewer.Active := Not BtnActive.Down; //not gtPDFViewer.Active;
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BtnPrint.Enabled := gtPDFViewer.Active;
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UpdateButton;
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end;
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procedure TF_PDFView.BtnActualSizeClick(Sender: TObject);
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begin
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gtPDFViewer.Zoom := gtPDFViewer.GetStandardZoomValue(sztActualSize);
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UpdateStatusBar;
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end;
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procedure TF_PDFView.btnFitWidthClick(Sender: TObject);
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begin
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gtPDFViewer.Zoom := gtPDFViewer.GetStandardZoomValue(sztFitWidth);
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnFitPageClick(Sender: TObject);
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begin
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gtPDFViewer.Zoom := gtPDFViewer.GetStandardZoomValue(sztFitPage);
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnFirstPageClick(Sender: TObject);
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begin
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gtPDFViewer.First;
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnPriorPageClick(Sender: TObject);
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begin
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gtPDFViewer.Prior;
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.EdtGotoPageKeyPress(Sender: TObject; var Key: Char);
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begin
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if not (Key in ['0'..'9', #13]) and (Ord(Key) <> VK_BACK) then
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begin
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Key := #0;
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end;
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TimerGotoPage.Enabled := true;
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end;
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procedure TF_PDFView.TimerGotoPageTimer(Sender: TObject);
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begin
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TTimer(Sender).Enabled := false;
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gtPDFViewer.GoToPage(StrToIntDef(EdtGotoPage.Text,1));
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnNextPageClick(Sender: TObject);
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begin
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gtPDFViewer.Next;
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnLastPageClick(Sender: TObject);
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begin
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gtPDFViewer.Last;
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UpdateButton;
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UpdateStatusBar;
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end;
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procedure TF_PDFView.BtnZoomInClick(Sender: TObject);
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var
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Lfactor: Integer;
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begin
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if edZoom.Text = '' then
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begin
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gtPDFViewer.Zoom := 1;
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UpdateStatusBar;
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end
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else
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begin
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Lfactor := Floor((gtPDFViewer.Zoom)/ ZoomIncrement);
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if ((gtPDFViewer.Zoom) - (ZoomIncrement * Lfactor)) = 0 then
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gtPDFViewer.Zoom := (ZoomIncrement * (Lfactor-1))
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else
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gtPDFViewer.Zoom := (ZoomIncrement * (Lfactor));
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UpdateStatusBar;
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end;
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end;
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procedure TF_PDFView.edZoomChange(Sender: TObject);
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begin
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if edZoom.Text <> '' then
|
||
gtPDFViewer.Zoom := StrToFloat_My(edZoom.text)
|
||
else
|
||
gtPDFViewer.Zoom := 1;
|
||
UpdateButton;
|
||
end;
|
||
|
||
procedure TF_PDFView.edZoomExit(Sender: TObject);
|
||
begin
|
||
if edZoom.Text <> '' then
|
||
gtPDFViewer.Zoom := StrToFloat_My(edZoom.Text);
|
||
end;
|
||
|
||
procedure TF_PDFView.edZoomKeyPress(Sender: TObject; var Key: Char);
|
||
begin
|
||
if not (Key in ['0'..'9','.', #13]) and (Ord(Key) <> VK_BACK) then
|
||
begin
|
||
Key := #0;
|
||
end;
|
||
end;
|
||
|
||
procedure TF_PDFView.BtnZoomOutClick(Sender: TObject);
|
||
var
|
||
Lfactor: Integer;
|
||
begin
|
||
if edZoom.Text = '' then
|
||
begin
|
||
gtPDFViewer.Zoom := ZoomIncrement;
|
||
UpdateStatusBar;
|
||
end
|
||
else
|
||
begin
|
||
Lfactor := Floor(StrToFloat_My(edZoom.text)/ ZoomIncrement);
|
||
gtPDFViewer.Zoom := (ZoomIncrement * (Lfactor+1));
|
||
UpdateStatusBar;
|
||
end;
|
||
end;
|
||
|
||
procedure TF_PDFView.FormShow(Sender: TObject);
|
||
begin
|
||
if FFile = '' then
|
||
begin
|
||
if FOpenDialogOnShow then
|
||
TimerDocOpenDialog.Enabled := true;
|
||
end
|
||
else
|
||
LoadPDF(FFile);
|
||
end;
|
||
|
||
procedure TF_PDFView.gbOkCancelResize(Sender: TObject);
|
||
begin
|
||
SetMiddleControlChilds(TControl(Sender), TControl(Self));
|
||
end;
|
||
|
||
procedure TF_PDFView.PrepareForm;
|
||
begin
|
||
gtPDFViewer.Active := false;
|
||
UpdateButton;
|
||
gbOkCancelResize(gbOkCancel);
|
||
end;
|
||
|
||
procedure TF_PDFView.TimerDocOpenDialogTimer(Sender: TObject);
|
||
begin
|
||
TTimer(Sender).Enabled := false;
|
||
OpenFileDialog(FActiveViewAfterOpen);
|
||
end;
|
||
|
||
procedure TF_PDFView.BtnPrintClick(Sender: TObject);
|
||
begin
|
||
gtPDFViewer.PrintDoc;
|
||
end;
|
||
|
||
procedure TF_PDFView.gtPDFDocPassword(Sender: TObject;
|
||
var Password: String; var Continue: Boolean; const Tries: Integer);
|
||
begin
|
||
FPassAllTries := Tries;
|
||
if Tries = 0 then
|
||
FLastPassTries := 0;
|
||
|
||
if (Tries > FLastPassTries) and (Tries < (FLastPassTries + 3)) then
|
||
ShowMessage(cPDFView_Msg4_1 + CRLF + cPDFView_Msg4_2);
|
||
if Tries < (FLastPassTries + 3) then
|
||
Continue := InputPassQuery(cPDFView_Msg4_4, cPDFView_Msg4_5, Password)
|
||
else
|
||
begin
|
||
Continue := False;
|
||
ShowMessage(cPDFView_Msg4_1 + CRLF + cPDFView_Msg4_3);
|
||
end;
|
||
end;
|
||
|
||
procedure TF_PDFView.FormCreate(Sender: TObject);
|
||
begin
|
||
FLastPassTries := 0;
|
||
FPassAllTries := -1; //-1 <20><><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> = 0
|
||
end;
|
||
|
||
procedure TF_PDFView.BtnClkRotateClick(Sender: TObject);
|
||
var
|
||
LBmp: TBitmap;
|
||
begin
|
||
gtPDFViewer.RotateClockwise90;
|
||
DefineRatateGlyph;
|
||
end;
|
||
|
||
procedure TF_PDFView.BtnResetRotateClick(Sender: TObject);
|
||
begin
|
||
gtPDFViewer.RotationAngle := ra0;
|
||
DefineRatateGlyph;
|
||
end;
|
||
|
||
procedure TF_PDFView.BtnUnClkRotateClick(Sender: TObject);
|
||
begin
|
||
gtPDFViewer.RotateAntiClockwise90;
|
||
//DefineRatateGlyph;
|
||
end;
|
||
|
||
end.
|