mirror of
https://github.com/doublecmd/doublecmd.git
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542 lines
14 KiB
ObjectPascal
542 lines
14 KiB
ObjectPascal
{
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Seksi Commander
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----------------------------
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Integrated viewer form
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Licence : GNU GPL v 2.0
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Author : radek.cervinka@centrum.cz
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contributors:
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Radek Polak
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ported to lazarus:
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changes:
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23.7.
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- fixed: scroll bar had wrong max value until user pressed key (by Radek Polak)
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- fixed: wrong scrolling with scroll bar - now look at ScrollBarVertScroll (by Radek Polak)
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}
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unit fViewer;
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{$mode objfpc}{$H+}
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interface
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uses
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LResources,
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SysUtils, Classes, Graphics, Controls, Forms,
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Dialogs, StdCtrls, ExtCtrls, ComCtrls, LCLProc, Menus,
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viewercontrol, fFindView;
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type
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{ TfrmViewer }
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TfrmViewer = class(TForm)
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Image: TImage;
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miSeparator: TMenuItem;
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miSavePos: TMenuItem;
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nbPages: TNotebook;
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pgText: TPage;
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pgImage: TPage;
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ScrollBarVert: TScrollBar;
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ScrollBox: TScrollBox;
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Status: TStatusBar;
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MainMenu: TMainMenu;
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miFile: TMenuItem;
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miPrev: TMenuItem;
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miNext: TMenuItem;
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miView: TMenuItem;
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miExit: TMenuItem;
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N1: TMenuItem;
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miImage: TMenuItem;
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miStretch: TMenuItem;
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miText: TMenuItem;
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miBin: TMenuItem;
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miHex: TMenuItem;
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miWrapText: TMenuItem;
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miAbout: TMenuItem;
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miAbout2: TMenuItem;
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miDiv1: TMenuItem;
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miSearch: TMenuItem;
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miDiv2: TMenuItem;
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miGraphics: TMenuItem;
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miEdit: TMenuItem;
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miSelectAll: TMenuItem;
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miCopyToClipboard: TMenuItem;
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ViewerControl: TViewerControl;
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procedure FormCreate(Sender : TObject);
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procedure FormKeyPress(Sender: TObject; var Key: Char);
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procedure ViewerControlMouseWheelDown(Sender: TObject; Shift: TShiftState;
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MousePos: TPoint; var Handled: Boolean);
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procedure ViewerControlMouseWheelUp(Sender: TObject; Shift: TShiftState;
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MousePos: TPoint; var Handled: Boolean);
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procedure frmViewerClose(Sender: TObject; var CloseAction: TCloseAction);
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procedure frmViewerKeyDown(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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procedure frmViewerKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
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procedure miExitClick(Sender: TObject);
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procedure miNextClick(Sender: TObject);
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procedure miPrevClick(Sender: TObject);
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procedure miSavePosClick(Sender: TObject);
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procedure miStretchClick(Sender: TObject);
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procedure miTextClick(Sender: TObject);
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procedure miBinClick(Sender: TObject);
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procedure miHexClick(Sender: TObject);
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procedure miWrapTextClick(Sender: TObject);
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procedure miAbout2Click(Sender: TObject);
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procedure miSearchClick(Sender: TObject);
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procedure FormDestroy(Sender: TObject);
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procedure miProcessClick(Sender: TObject);
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procedure miGraphicsClick(Sender: TObject);
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procedure miCopyToClipboardClick(Sender: TObject);
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procedure miSelectAllClick(Sender: TObject);
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procedure ScrollBarVertScroll(Sender: TObject; ScrollCode: TScrollCode;
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var ScrollPos: Integer);
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private
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{ Private declarations }
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FileList: TStringList;
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iActiveFile:Integer;
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bImage:Boolean;
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FFindDialog:TfrmFindView;
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FDeleteAfterView : Boolean;
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procedure UpDateScrollBar;
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Function CheckGraphics(const sFileName:String):Boolean;
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procedure AdjustViewerSize(ReqWidth, ReqHeight: Integer);
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procedure LoadGraphics(const sFileName:String);
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procedure DoSearch;
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public
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procedure LoadFile(iIndex:Integer);
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procedure ReMmapIfNeed;
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end;
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procedure ShowViewer(sl:TStringList; bDeleteAfterView : Boolean = False);
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implementation
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uses
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uLng, uShowMsg, uGlobs, lcltype, lazjpeg, uFindMmap;
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procedure ShowViewer(sl:TStringList; bDeleteAfterView : Boolean = False);
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var viewer: TfrmViewer;
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begin
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//writeln('ShowViewer - Using Internal');
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viewer := TfrmViewer.Create(Application);
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gViewerPos.Restore(viewer);
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viewer.FileList.Assign(sl);
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viewer.LoadFile(0);
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viewer.Show;
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viewer.FDeleteAfterView := bDeleteAfterView;
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end;
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procedure TfrmViewer.LoadFile(iIndex:Integer);
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begin
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// writeln('Viewer: LoadFile:',iIndex);
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iActiveFile:=iIndex;
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Caption:=FileList.Strings[iIndex];
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Screen.Cursor:=crHourGlass;
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try
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// writeln('View: BeforeCheckGraphics:',iIndex);
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if CheckGraphics(FileList.Strings[iIndex]) then
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begin
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// writeln('View: LoadGraphics:',iIndex);
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LoadGraphics(FileList.Strings[iIndex]);
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end
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else
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begin
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// writeln('View: LoadIntoViewer:',iIndex);
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miImage.Visible:=False;
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miEdit.Visible:=True;
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bImage:=False;
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nbPages.ActivePageComponent:=pgText;
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ViewerControl.UnMapFile; // if any mapped
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// miProcess.Click;
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ViewerControl.MapFile(FileList.Strings[iIndex]); //handled by miProcess.Click
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UpDateScrollBar;
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end;
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Status.Panels[0].Text:=FileList.Strings[iIndex];
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Status.Panels[1].Text:=Format('%d/%d',[iIndex+1,FileList.Count]);
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finally
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Screen.Cursor:=crDefault;
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end;
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end;
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procedure TfrmViewer.FormKeyPress(Sender: TObject; var Key: Char);
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begin
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if (key='N') or (key='n') then
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miNextClick(Sender);
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if (key='P') or (key='p') then
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miPrevClick(Sender);
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if Key='1' then
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ViewerControl.ViewerMode:=vmText;
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if Key='2' then
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ViewerControl.ViewerMode:=vmBin;
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if Key='3' then
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ViewerControl.ViewerMode:=vmHex;
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if Key='4' then
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ViewerControl.ViewerMode:=vmWrap;
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end;
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procedure TfrmViewer.ViewerControlMouseWheelDown(Sender: TObject;
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Shift: TShiftState; MousePos: TPoint; var Handled: Boolean);
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begin
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ViewerControl.DownBy(3);
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Handled:=True;
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end;
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procedure TfrmViewer.ViewerControlMouseWheelUp(Sender: TObject;
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Shift: TShiftState; MousePos: TPoint; var Handled: Boolean);
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begin
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ViewerControl.UpBy(3);
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Handled:=True;
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end;
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procedure TfrmViewer.frmViewerClose(Sender: TObject;
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var CloseAction: TCloseAction);
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var
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I, Count : Integer;
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begin
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// TODO: may be better automtic save
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// (see also TfrmViewer.miSavePosClick)
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CloseAction:=caFree;
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if not bImage then gViewerPos.Save(Self);
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ViewerControl.UnMapFile;
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if FDeleteAfterView then
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begin
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Count := FileList.Count - 1;
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//DebugLN('DeleteFile == ' + FileList.Strings[0]);
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for I := 0 to Count do
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DeleteFile(FileList.Strings[I]);
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end;
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end;
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procedure TfrmViewer.frmViewerKeyDown(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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begin
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if (key=VK_Q) then Close;
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if bImage then Exit;
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// now handle shortcuts to viewer
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if Shift<>[] then Exit;
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if Key=VK_Down then
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ViewerControl.Down;
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if Key=VK_Up then
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ViewerControl.Up;
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if Key=VK_Home then
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ViewerControl.GoHome;
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if Key=VK_End then
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ViewerControl.GoEnd;
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if Key=VK_PRIOR then
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ViewerControl.PageUp;
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if Key=VK_NEXT then
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ViewerControl.PageDown;
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if (Key=VK_F3) or ((Key=VK_F) and (Shift=[ssCtrl])) then
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DoSearch;
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UpDateScrollBar;
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end;
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procedure TfrmViewer.frmViewerKeyUp(Sender: TObject; var Key: Word;
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Shift: TShiftState);
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begin
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if key=27 then
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begin
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Key:=0;
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Close;
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end;
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end;
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procedure TfrmViewer.miExitClick(Sender: TObject);
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begin
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inherited;
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Close;
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end;
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procedure TfrmViewer.miNextClick(Sender: TObject);
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begin
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inherited;
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if iActiveFile+1>=FileList.Count then
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LoadFile(0)
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else
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LoadFile(iActiveFile+1);
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end;
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procedure TfrmViewer.miPrevClick(Sender: TObject);
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begin
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inherited;
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if iActiveFile>0 then
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LoadFile(iActiveFile-1)
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else
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LoadFile(FileList.Count-1);
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end;
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procedure TfrmViewer.miSavePosClick(Sender: TObject);
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begin
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// TODO: It really need? may be better automtic save
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gViewerPos.Save(Self);
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msgOK(rsPositionSaved);
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end;
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procedure TfrmViewer.miStretchClick(Sender: TObject);
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begin
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miStretch.Checked:=not miStretch.Checked;
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Image.Stretch:=miStretch.Checked;
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end;
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procedure TfrmViewer.miTextClick(Sender: TObject);
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begin
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ReMmapIfNeed;
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ViewerControl.ViewerMode:=vmText;
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end;
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procedure TfrmViewer.miBinClick(Sender: TObject);
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begin
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ReMmapIfNeed;
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ViewerControl.ViewerMode:=vmBin;
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end;
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procedure TfrmViewer.miHexClick(Sender: TObject);
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begin
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inherited;
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ReMmapIfNeed;
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ViewerControl.ViewerMode:=vmHex;
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end;
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procedure TfrmViewer.miWrapTextClick(Sender: TObject);
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begin
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inherited;
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ReMmapIfNeed;
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ViewerControl.ViewerMode:=vmWrap;
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end;
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procedure TfrmViewer.miAbout2Click(Sender: TObject);
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begin
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MsgOK(rsViewAboutText);
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end;
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procedure TfrmViewer.miSearchClick(Sender: TObject);
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begin
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DoSearch;
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end;
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procedure TfrmViewer.FormCreate(Sender: TObject);
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begin
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// writeln('TfrmViewer.FormCreate');
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ViewerControl.Color:=clWindow;
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FileList := TStringList.Create;
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FFindDialog:=nil; // dialog is created in first use
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{ Status.Panels[0].Width:=50;
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Status.Panels[1].Width:=50;}
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// writeln('TfrmViewer.FormCreate done');
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end;
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procedure TfrmViewer.FormDestroy(Sender: TObject);
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begin
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FileList.Free;
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if assigned(FFindDialog) then
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FreeAndNil(FFindDialog);
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inherited;
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end;
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procedure TfrmViewer.miProcessClick(Sender: TObject);
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var
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sViewCmd:String;
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sCurrName:String;
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begin
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{ writeln('TfrmViewer.miProcessClick');
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inherited;
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miEdit.Visible:=True;
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if not miProcess.Checked then
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begin
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// if ViewerControl.DataAccess=dtNothing then
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ViewerControl.MapFile(FileList.Strings[iActiveFile]);
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miProcess.Checked:=not miProcess.Checked;
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end
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else
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begin
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sCurrName:=FileList.Strings[iActiveFile];
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sViewCmd:=gExts.GetCommandText(lowercase(ExtractFileExt(sCurrName)),'view');
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if (sViewCmd='') then Exit;
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sViewCmd:=Copy(sViewCmd, pos('=',sViewCmd)+1, length(sViewCmd));
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// i known about range, but Copy correct this "bug"
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sViewCmd:=StringReplace(sViewCmd,'%f',ExtractFileName(sCurrName),[rfReplaceAll]);
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sViewCmd:=StringReplace(sViewCmd,'%d',ExtractFilePath(sCurrName),[rfReplaceAll]);
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sViewCmd:=Trim(StringReplace(sViewCmd,'%p',sCurrName,[rfReplaceAll]));
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ViewerControl.UnMapFile;
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Status.Panels[2].Text:=IntToStr(ViewerControl.FileSize);
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Status.Panels[3].Text:=sViewCmd;
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UpDateScrollBar;
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miProcess.Checked:=not miProcess.Checked;
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end;
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}
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end;
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procedure TfrmViewer.ReMmapIfNeed;
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begin
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// writeln('TfrmViewer.RemmapIfneed');
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if bImage then
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begin
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bImage:=False;
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ViewerControl.MapFile(FileList.Strings[iActiveFile]);
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miImage.Visible:=False;
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miEdit.Visible:=True;
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bImage:=False;
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nbPages.ActivePageComponent:=pgText;
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image.Picture:=nil;
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end;
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Status.Panels[2].Text:=IntToStr(ViewerControl.FileSize);
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Status.Panels[3].Text:='';
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UpDateScrollBar;
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end;
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procedure TfrmViewer.UpDateScrollBar;
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begin
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// writeln('TfrmViewer.Update scrollbar');
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if ScrollBarVert.Min<>0 then
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ScrollBarVert.Min:=0;
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if ScrollBarVert.Max<>ViewerControl.FileSize then
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ScrollBarVert.Max:=ViewerControl.FileSize;
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if ScrollBarVert.Position<> ViewerControl.Position then
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ScrollBarVert.Position:=ViewerControl.Position;
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end;
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procedure TfrmViewer.miGraphicsClick(Sender: TObject);
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begin
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inherited;
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if CheckGraphics(FileList.Strings[iActiveFile]) then
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LoadGraphics(FileList.Strings[iActiveFile]);
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end;
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Function TfrmViewer.CheckGraphics(const sFileName:String):Boolean;
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var
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sExt:String;
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begin
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// writeln('TfrmViewer.CheckGraphics');
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sExt:=Lowercase(ExtractFileExt(sFileName));
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Result:=(sExt='.bmp') or (sExt='.xpm') or (sExt='.png') or
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(sExt='.jpg') or (sExt='.jpeg') or (sExt='.ico') or
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(sExt='.ddw') or (sExt='.tga');
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end;
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// Adjust Viewer size (width and height) to view image
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// with dimensions ReqWidth/ReqHeight
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procedure TfrmViewer.AdjustViewerSize(ReqWidth, ReqHeight: Integer);
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var
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dx, dy: Integer;
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begin
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dx := Width - ViewerControl.Width;
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dy := Height - ViewerControl.Height;
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Width := ReqWidth + dx;
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Height := ReqHeight + dy;
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end;
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procedure TfrmViewer.LoadGraphics(const sFileName:String);
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begin
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// writeln('TfrmViewer.Load graphics');
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Image.Stretch:=miStretch.Checked;
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Image.Picture.LoadFromFile(sFileName);
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with Image.Picture do AdjustViewerSize(Width, Height);
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nbPages.ActivePageComponent:=pgImage;
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miImage.Visible:=True;
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miEdit.Visible:=False;
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// miView.Visible:=False;// text modes
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bImage:=True;
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end;
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procedure TfrmViewer.DoSearch;
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var
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PAdr:PChar;
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iSizeData:Integer;
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begin
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inherited;
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// fi
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PAdr:=ViewerControl.GetDataAdr; // begin of data in memory
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inc(PAdr,ViewerControl.Position); // move to current position
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iSizeData:=ViewerControl.FileSize - ViewerControl.Position;
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if iSizeData<=0 then Exit;
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// in first use create dialog
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if not assigned(FFindDialog) then
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FFindDialog:=TfrmFindView.Create(Application);
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if FFindDialog.ShowModal <> mrOK then Exit;
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if FFindDialog.cbDataToFind.Text='' then Exit;
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PAdr:=PosMem(PAdr, iSizeData, FFindDialog.cbDataToFind.Text, FFindDialog.cbCaseSens.Checked);
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if (Integer(PAdr)<>-1) then
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begin
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// founded, set position to ViewerControl
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ViewerControl.Position:=Integer(PAdr)-Integer(ViewerControl.GetDataAdr);
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// ViewerControl.Up;
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// position is property and have write method (repaint widget)
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UpDateScrollBar;
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end;
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SetFocus;
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end;
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procedure TfrmViewer.miCopyToClipboardClick(Sender: TObject);
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begin
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ViewerControl.CopyToClipboard;
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end;
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procedure TfrmViewer.miSelectAllClick(Sender: TObject);
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begin
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inherited;
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ViewerControl.SelectAll;
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end;
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procedure TfrmViewer.ScrollBarVertScroll(Sender: TObject;
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ScrollCode: TScrollCode; var ScrollPos: Integer);
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begin
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inherited;
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// RADEK
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case ScrollCode of
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scLineUp:
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begin
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ViewerControl.Up;
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ScrollPos := ViewerControl.Position;
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end;
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scLineDown:
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begin
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ViewerControl.Down;
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ScrollPos := ViewerControl.Position;
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end;
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scPageUp:
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begin
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ViewerControl.PageUp;
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ScrollPos := ViewerControl.Position;
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end;
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scPageDown:
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begin
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ViewerControl.PageDown;
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ScrollPos := ViewerControl.Position;
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end;
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scTop: ViewerControl.GoHome;
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scBottom: ViewerControl.GoEnd;
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scPosition:
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begin
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ViewerControl.Position := ScrollPos;
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if ViewerControl.UpLine then ViewerControl.DownLine;
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ScrollPos := ViewerControl.Position;
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end;
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end;
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end;
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initialization
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{$I fviewer.lrs}
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end.
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