468 lines
12 KiB
ObjectPascal
468 lines
12 KiB
ObjectPascal
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{******************************************}
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{ }
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{ FastReport VCL }
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{ Simple text export }
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{ }
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{ Copyright (c) 1998-2021 }
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{ by Fast Reports Inc. }
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{ }
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{******************************************}
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unit frxExportText;
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interface
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{$I frx.inc}
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uses
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{$IFNDEF Linux}
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Windows,
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{$ELSE}
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LCLType, LCLIntf, LCLProc,
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{$ENDIF}
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Messages, SysUtils, Classes, Graphics,
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frxClass, frxExportMatrix, frxExportBaseDialog
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{$IFNDEF Linux}, ShellAPI {$ENDIF}
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{$IFDEF Delphi6}, Variants {$ENDIF}
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{$IFDEF FPC}, LazHelper {$ENDIF};
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type
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{$IFDEF DELPHI16}
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[ComponentPlatformsAttribute(pidWin32 or pidWin64)]
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{$ENDIF}
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TfrxSimpleTextExport = class(TfrxBaseDialogExportFilter)
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private
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FPageBreaks: Boolean;
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FMatrix: TfrxIEMatrix;
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Exp: TStream;
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FPage: TfrxReportPage;
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FFrames: Boolean;
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pX: Extended;
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pY: Extended;
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pT: Extended;
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FEmptyLines: Boolean;
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FOEM: Boolean;
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FUTF8: Boolean;
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FDeleteEmptyColumns: Boolean;
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procedure ExportPage(Stream: TStream);
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public
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constructor Create(AOwner: TComponent); override;
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class function GetDescription: String; override;
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class function ExportDialogClass: TfrxBaseExportDialogClass; override;
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function Start: Boolean; override;
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procedure Finish; override;
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procedure FinishPage(Page: TfrxReportPage; Index: Integer); override;
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procedure StartPage(Page: TfrxReportPage; Index: Integer); override;
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procedure ExportObject(Obj: TfrxComponent); override;
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published
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property PageBreaks: Boolean read FPageBreaks write FPageBreaks default True;
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property Frames: Boolean read FFrames write FFrames;
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property EmptyLines: Boolean read FEmptyLines write FEmptyLines;
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property OEMCodepage: Boolean read FOEM write FOEM;
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property UTF8: Boolean read FUTF8 write FUTF8;
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property OpenAfterExport;
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property OverwritePrompt;
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property DeleteEmptyColumns: Boolean read FDeleteEmptyColumns write FDeleteEmptyColumns;
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end;
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implementation
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uses frxUtils, frxFileUtils, frxUnicodeUtils, frxRes, frxrcExports, frxExportTextDialog;
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{$IFDEF Delphi12}
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function Trim(const S: AnsiString): AnsiString;
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var
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I, L: Integer;
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begin
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L := Length(S);
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I := 1;
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while (I <= L) and (S[I] <= ' ') do Inc(I);
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if I > L then Result := '' else
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begin
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while S[L] <= ' ' do Dec(L);
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Result := Copy(S, I, L - I + 1);
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end;
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end;
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function TrimRight(const S: AnsiString): AnsiString;
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var
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I: Integer;
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begin
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I := Length(S);
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while (I > 0) and (S[I] <= ' ') do Dec(I);
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Result := Copy(S, 1, I);
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end;
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{$ENDIF}
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{ TfrxSimpleTextExport }
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constructor TfrxSimpleTextExport.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FPageBreaks := True;
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FFrames := False;
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FEmptyLines := False;
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FOEM := False;
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FUTF8 := False;
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FDeleteEmptyColumns := True;
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FilterDesc := frxGet(8801);
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DefaultExt := frxGet(8802);
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end;
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class function TfrxSimpleTextExport.GetDescription: String;
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begin
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Result := frxResources.Get('SimpleTextExport');
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end;
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procedure TfrxSimpleTextExport.ExportPage(Stream: TStream);
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var
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x, y, i: Integer;
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FScreen: array of AnsiChar;
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FScreenWidth: Integer;
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FScreenHeight: Integer;
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Obj: TfrxIEMObject;
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ObjBounds: TfrxRect;
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ObjWidth, ObjHeight: Extended;
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c: AnsiChar;
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s: AnsiString;
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procedure InitObjBounds(Obj: TfrxIEMObject);
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begin
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ObjBounds := FMatrix.GetObjectBounds(Obj);
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ObjWidth := ObjBounds.Right - ObjBounds.Left;
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ObjHeight := ObjBounds.Bottom - ObjBounds.Top;
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end;
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function MakeStr(C: AnsiChar; N: Integer): AnsiString;
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begin
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if N < 1 then
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Result := ''
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else
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begin
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SetLength(Result, N);
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FillChar(Result[1], Length(Result), C);
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end;
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end;
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function AddChar(C: AnsiChar; const S: AnsiString; N: Integer): AnsiString;
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begin
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if Length(S) < N then
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Result := MakeStr(C, N - Length(S)) + S else
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Result := S;
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end;
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function AddCharR(C: AnsiChar; const S: AnsiString; N: Integer): AnsiString;
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begin
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if Length(S) < N then
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Result := S + MakeStr(C, N - Length(S)) else
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Result := S;
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end;
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function LeftStr(const S: AnsiString; N: Integer): AnsiString;
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begin
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Result := AddCharR(' ', S, N);
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end;
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function RightStr(const S: AnsiString; N: Integer): AnsiString;
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begin
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Result := AddChar(' ', S, N);
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end;
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function CenterStr(const S: AnsiString; Len: Integer): AnsiString;
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begin
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if Length(S) < Len then
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begin
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Result := MakeStr(' ', (Len div 2) - (Length(S) div 2)) + S;
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Result := Result + MakeStr(' ', Len - Length(Result));
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end
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else
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Result := S;
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end;
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function AlignStr(const Buf: AnsiString; const style: TfrxIEMStyle; const Width: Integer): AnsiString;
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begin
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if (style.HAlign = haRight) then
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Result := RightStr(buf, Width - 1)
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else if (style.HAlign = haCenter) then
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Result := CenterStr(buf, Width - 1)
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else
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Result := LeftStr(buf, Width - 1);
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end;
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procedure ScreenCreate;
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begin
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Initialize(FScreen);
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SetLength(FScreen, FScreenWidth * FScreenHeight);
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FillChar(FScreen[0], Length(FScreen), #32);
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end;
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procedure ScreenType(const x,y: Integer; const c: AnsiChar);
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begin
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FScreen[FScreenWidth * y + x] := c;
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end;
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procedure ScreenString(const x, y: Integer; const s: AnsiString);
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var
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i: Integer;
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begin
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for i := 0 to Length(s) - 1 do
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ScreenType(x + i, y, s[i + 1]);
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end;
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procedure ScreenMemo(const Obj: TfrxIEMObject);
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var
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i: Integer;
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curx, cury: Integer;
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s: AnsiString;
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function StrToOem(const AnsiStr: AnsiString): AnsiString;
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begin
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{$IFNDEF Linux}
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SetLength(Result, Length(AnsiStr));
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if Length(Result) > 0 then
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CharToOemBuffA(PAnsiChar(AnsiStr), PAnsiChar(Result), Length(Result));
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{$ELSE}
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Result := AnsiStr;
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{$ENDIF}
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end;
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begin
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curx := Round(ObjBounds.Left / pX);
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cury := Round(ObjBounds.Top / pY);
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for i := 0 to Obj.Memo.Count - 1 do
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begin
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if FOEM then
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s := StrToOem(_UnicodeToAnsi(Obj.Memo[i], DEFAULT_CHARSET))
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else
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if FUTF8 then
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s := UTF8Encode(Obj.Memo[i])
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else
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s := _UnicodeToAnsi(Obj.Memo[i], DEFAULT_CHARSET);
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ScreenString(curx, cury + i, AlignStr(s, Obj.Style, Round(ObjWidth / pX) - 1));
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end;
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if FFrames then
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begin
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if (ftLeft in Obj.Style.FrameTyp) then
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for i := 0 to Round(ObjHeight / pY) - 1 do
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ScreenType(curx - 1, cury + i, '|');
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if (ftRight in Obj.Style.FrameTyp) then
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for i := 0 to Round(ObjHeight / pY) - 1 do
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ScreenType(curx + Round(ObjWidth / pX) - 2, cury + i, '|');
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if (ftTop in Obj.Style.FrameTyp) then
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for i := 0 to Round(ObjWidth / pX) - 1 do
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ScreenType(curx - 1 + i, cury - 1, '-');
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if (ftBottom in Obj.Style.FrameTyp) then
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for i := 0 to Round(ObjWidth / pX) - 1 do
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ScreenType(curx - 1 + i, cury + Round(ObjHeight / pY) - 1, '-');
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end;
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end;
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function ScreenGet(const x, y: Integer): AnsiChar;
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begin
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if (x < FScreenWidth) and (y < FScreenHeight) and
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(x >= 0) and (y >= 0) then
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Result := FScreen[FScreenWidth * y + x] else
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Result := ' ';
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end;
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function GetMaxPX(const Obj: TfrxIEMObject): Extended;
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var
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i : Integer;
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begin
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Result := 0;
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for i := 0 to Obj.Memo.Count - 1 do
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if Length(Obj.Memo[i]) > Result then
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Result := Length(Obj.Memo[i]);
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if (Result > 0) then //and (Obj.Width )
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Result := 6 * ObjWidth / (Result * Obj.Style.Font.Size);
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if Result < 1 then
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Result := 1;
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end;
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function GetMaxPY(const Obj: TfrxIEMObject): Extended;
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begin
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if Obj.Memo.Count > 0 then
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Result := 5 * ObjHeight / (Obj.Memo.Count * Obj.Style.Font.Size)
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else
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Result := 0;
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end;
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function ColumnEmpty(const x: Integer): Boolean;
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var
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y: Integer;
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begin
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Result := True;
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for y := 0 to FScreenHeight - 1 do
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if FScreen[FScreenWidth * y + x] <> #32 then
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begin
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Result := False;
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break;
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end;
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end;
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procedure DeleteColumn(const x: Integer);
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var
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i, j: Integer;
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begin
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for i := 0 to FScreenHeight - 1 do
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begin
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for j := x to FScreenWidth - 2 do
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FScreen[FScreenWidth * i + j] := FScreen[FScreenWidth * i + j + 1];
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FScreen[FScreenWidth * i + FScreenWidth - 1] := #32;
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end;
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end;
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begin
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FMatrix.Prepare;
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for i := 0 to FMatrix.ObjectsCount - 1 do
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begin
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Obj := FMatrix.GetObjectById(i);
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InitObjBounds(Obj);
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pT := GetMaxPX(Obj);
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if (pT < pX) and (pT <> 0) then
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pX := pT;
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pT := GetMaxPY(Obj);
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if (pT < pY) and (pT <> 0) then
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pY := pT;
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end;
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FScreenWidth := Round(FPage.Width / pX);
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FScreenHeight := Round(FPage.Height / pY);
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ScreenCreate;
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for y := 0 to FMatrix.Height - 2 do
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begin
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for x := 0 to FMatrix.Width - 1 do
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begin
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i := FMatrix.GetCell(x, y);
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if (i <> -1) then
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begin
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Obj := FMatrix.GetObjectById(i);
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InitObjBounds(Obj);
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ScreenMemo(Obj);
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end;
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end;
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end;
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x := 0;
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i := 2;
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y := FScreenWidth;
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while x < y - 1 do
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if DeleteEmptyColumns and ColumnEmpty(x) then
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if i = 0 then
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begin
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DeleteColumn(x);
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Dec(y);
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end
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else
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begin
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Dec(i);
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Inc(x);
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end
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else
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begin
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Inc(x);
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i := 2;
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end;
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for y := 0 to FScreenHeight - 1 do
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begin
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s := '';
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for x := 0 to FScreenWidth - 1 do
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begin
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c := ScreenGet(x, y);
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s := s + c;
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end;
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s := TrimRight(s);
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if (Length(Trim(s)) > 0) or FEmptyLines then
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begin
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s := s + #13#10;
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Stream.Write(s[1], Length(s));
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end;
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end;
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if FPageBreaks then
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Stream.Write(AnsiString(#12), 1);
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end;
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function TfrxSimpleTextExport.Start: Boolean;
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begin
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if (FileName <> '') or Assigned(Stream) then
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begin
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if (ExtractFilePath(FileName) = '') and (DefaultPath <> '') then
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FileName := DefaultPath + '\' + FileName;
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FMatrix := TfrxIEMatrix.Create(UseFileCache, Report.EngineOptions.TempDir, Report.PictureCacheOptions.CachedImagesBuildType);
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FMatrix.Background := False;
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FMatrix.BackgroundImage := False;
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FMatrix.Printable := ExportNotPrintable;
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FMatrix.RichText := True;
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FMatrix.PlainRich := True;
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FMatrix.AreaFill := False;
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FMatrix.CropAreaFill := True;
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FMatrix.Inaccuracy := 0.5;
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FMatrix.DeleteHTMLTags := True;
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FMatrix.Images := False;
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FMatrix.WrapText := True;
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FMatrix.ShowProgress := False;
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FMatrix.FramesOptimization := True;
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try
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if Assigned(Stream) then
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Exp := Stream
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else
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Exp := IOTransport.GetStream(FileName);
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Result := True;
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except
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Result := False;
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end;
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end
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else
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Result := False;
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end;
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procedure TfrxSimpleTextExport.StartPage(Page: TfrxReportPage; Index: Integer);
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begin
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FMatrix.Clear;
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pX := MAXWORD;
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pY := MAXWORD;
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end;
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class function TfrxSimpleTextExport.ExportDialogClass: TfrxBaseExportDialogClass;
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begin
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Result := TfrxSimpleTextExportDialog;
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end;
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procedure TfrxSimpleTextExport.ExportObject(Obj: TfrxComponent);
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var v: TfrxView;
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begin
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if Obj is TfrxView then
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begin
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v := TfrxView(Obj);
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if vsExport in v.Visibility then
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FMatrix.AddObject(v);
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end;
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end;
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procedure TfrxSimpleTextExport.FinishPage(Page: TfrxReportPage; Index: Integer);
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begin
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FPage := Page;
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ExportPage(Exp);
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end;
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procedure TfrxSimpleTextExport.Finish;
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begin
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FMatrix.Free;
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if not Assigned(Stream) then
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begin
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IOTransport.DoFilterProcessStream(Exp, Self);
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IOTransport.FreeStream(Exp);
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end;
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end;
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end.
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