Delphi版 ArcEngine 10种格式地图输出方法
1
function ExportMapToFile(pActiveView: IActiveView; filetypes: FileType; fileName: string): Boolean;
2var
3 pExport: IExport;
4 iOutputResolution: SmallInt;
5 iScreenResolution: SmallInt;
6 exportRect: tagRECT;
7 pPixelBounds: IEnvelope;
8 hdc: Integer;
9
10 pExportPdf: IExportPDF;
11begin
12 case filetypes of
13 ftBmp: pExport := CoExportBMP.Create as IExport;
14 ftGif: pExport := CoExportGIF.Create as IExport;
15 ftJpg: pExport := CoExportJPEG.Create as IExport;
16 ftSvg: pExport := CoExportSVG.Create as IExport;
17 ftEps: pExport := CoExportPS.Create as IExport;
18 ftPng: pExport := CoExportPNG.Create as IExport;
19 ftEmf: pExport := CoExportEMF.Create as IExport;
20 ftAI: pExport := CoExportAI.Create as IExport;
21 ftTif: pExport := CoExportTiff.Create as IExport;
22 ftPdf:
23 begin
24 pExport := CoExportPdf.Create as IExport;
25 pExportPdf := pExport as IExportPDF;
26 pExportPdf.EmbedFonts := True;
27 pExportPdf.ImageCompression := esriExportImageCompressionLZW;
28 pExportPdf.Compressed := True;
29 end;
30 end;
31
32 if Length(fileName) = 0 then
33 begin
34 Result := False;
35 Exit;
36 end;
37
38 pExport.ExportFileName := fileName;
39 iScreenResolution := 96;
40 iOutputResolution := 300;
41
42 pPixelBounds := CoEnvelope.Create as IEnvelope;
43 exportRect.left := 0;
44 exportRect.top := 0;
45 exportRect.right := pActiveView.ExportFrame.right * Round(iOutputResolution / iScreenResolution);
46 exportRect.bottom := pActiveView.ExportFrame.bottom * Round(iOutputResolution / iScreenResolution);
47
48 pPixelBounds.PutCoords(exportRect.left, exportRect.top, exportRect.right, exportRect.bottom);
49
50 pExport.PixelBounds := pPixelBounds;
51
52 hdc := pExport.StartExporting;
53 pActiveView.Output(hdc, Round(pExport.Resolution), exportRect, pActiveView.Extent, nil);
54 pExport.FinishExporting;
55 pExport.Cleanup;
56 Result := True;
57end;
function ExportMapToFile(pActiveView: IActiveView; filetypes: FileType; fileName: string): Boolean;2
var3
pExport: IExport;4
iOutputResolution: SmallInt;5
iScreenResolution: SmallInt;6
exportRect: tagRECT;7
pPixelBounds: IEnvelope;8
hdc: Integer;9
10
pExportPdf: IExportPDF;11
begin12
case filetypes of13
ftBmp: pExport := CoExportBMP.Create as IExport;14
ftGif: pExport := CoExportGIF.Create as IExport;15
ftJpg: pExport := CoExportJPEG.Create as IExport;16
ftSvg: pExport := CoExportSVG.Create as IExport;17
ftEps: pExport := CoExportPS.Create as IExport;18
ftPng: pExport := CoExportPNG.Create as IExport;19
ftEmf: pExport := CoExportEMF.Create as IExport;20
ftAI: pExport := CoExportAI.Create as IExport;21
ftTif: pExport := CoExportTiff.Create as IExport;22
ftPdf:23
begin24
pExport := CoExportPdf.Create as IExport;25
pExportPdf := pExport as IExportPDF;26
pExportPdf.EmbedFonts := True;27
pExportPdf.ImageCompression := esriExportImageCompressionLZW;28
pExportPdf.Compressed := True;29
end;30
end;31
32
if Length(fileName) = 0 then33
begin34
Result := False;35
Exit;36
end;37
38
pExport.ExportFileName := fileName;39
iScreenResolution := 96;40
iOutputResolution := 300;41
42
pPixelBounds := CoEnvelope.Create as IEnvelope;43
exportRect.left := 0;44
exportRect.top := 0;45
exportRect.right := pActiveView.ExportFrame.right * Round(iOutputResolution / iScreenResolution);46
exportRect.bottom := pActiveView.ExportFrame.bottom * Round(iOutputResolution / iScreenResolution);47
48
pPixelBounds.PutCoords(exportRect.left, exportRect.top, exportRect.right, exportRect.bottom);49
50
pExport.PixelBounds := pPixelBounds;51
52
hdc := pExport.StartExporting;53
pActiveView.Output(hdc, Round(pExport.Resolution), exportRect, pActiveView.Extent, nil);54
pExport.FinishExporting;55
pExport.Cleanup;56
Result := True;57
end;