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{%MainUnit ../graphics.pp}
{******************************************************************************
TTiffImage
******************************************************************************
*****************************************************************************
This file is part of the Lazarus Component Library (LCL)
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
}
{ TTiffImage }
constructor TTiffImage.Create;
begin
inherited Create;
FSoftware := 'TTiffImage - Lazarus LCL: ' + lcl_version + ' - FPC: ' + {$I %FPCVERSION%};
end;
procedure TTiffImage.FinalizeReader(AReader: TFPCustomImageReader);
var
D, T: TDateTime;
S: String;
YY, MM, DD, HH, NN, SS: Integer;
IFD: TTiffIFD;
begin
IFD:=TFPReaderTiff(AReader).FirstImg;
FArtist := IFD.Artist;
FCopyright := IFD.Copyright;
S := IFD.DateAndTime;
// YYYY:MM:DD HH:MM:SS
// 0000000001111111111
// 1234567890123456789
if TryStrToInt(Copy(S, 1, 4), YY)
and TryStrToInt(Copy(S, 6, 2), MM)
and TryStrToInt(Copy(S, 9, 2), DD)
and TryStrToInt(Copy(S, 12, 2), HH)
and TryStrToInt(Copy(S, 15, 2), NN)
and TryStrToInt(Copy(S, 18, 2), SS)
and TryEncodeDate(YY, MM, DD, D)
and TryEncodeTime(HH, NN, SS, 0, T)
then FDateTime := ComposeDateTime(D,T)
else FDateTime := 0;
FDocumentName := IFD.DocumentName;
FHostComputer := IFD.HostComputer;
FImageDescription := IFD.ImageDescription;
FMake := IFD.Make_ScannerManufacturer;
FModel := IFD.Model_Scanner;
case IFD.ResolutionUnit of
1: FResolutionUnit := tuNone;
2: FResolutionUnit := tuInch;
3: FResolutionUnit := tuCentimeter;
else
FResolutionUnit := tuUnknown;
end;
FSoftware := IFD.Software;
FXResolution := IFD.XResolution;
FYResolution := IFD.YResolution;
inherited;
end;
class function TTiffImage.GetFileExtensions: string;
begin
Result := 'tif;tiff';
end;
class function TTiffImage.GetReaderClass: TFPCustomImageReaderClass;
begin
Result := TLazReaderTiff;
end;
class function TTiffImage.GetSharedImageClass: TSharedRasterImageClass;
begin
Result := TSharedTiffImage;
end;
class function TTiffImage.GetWriterClass: TFPCustomImageWriterClass;
begin
Result := TLazWriterTiff;
end;
procedure TTiffImage.InitializeReader(AImage: TLazIntfImage; AReader: TFPCustomImageReader);
begin
inherited;
end;
procedure TTiffImage.InitializeWriter(AImage: TLazIntfImage; AWriter: TFPCustomImageWriter);
begin
inherited;
if FArtist = ''
then AImage.RemoveExtra(TiffArtist)
else AImage.Extra[TiffArtist] := FArtist;
if FCopyright = ''
then AImage.RemoveExtra(TiffCopyright)
else AImage.Extra[TiffCopyright] := FCopyright;
if FDateTime = 0
then AImage.RemoveExtra(TiffDateTime)
else AImage.Extra[TiffDateTime] := FormatDateTime('YYYY:MM:DD HH:NN:SS', FDateTime);
if FDocumentName = ''
then AImage.RemoveExtra(TiffDocumentName)
else AImage.Extra[TiffDocumentName] := FDocumentName;
if FImageDescription = ''
then AImage.RemoveExtra(TiffImageDescription)
else AImage.Extra[TiffImageDescription] := FImageDescription;
case FResolutionUnit of
tuNone: AImage.Extra[TiffResolutionUnit] := '1';
tuInch: AImage.Extra[TiffResolutionUnit] := '2';
tuCentimeter: AImage.Extra[TiffResolutionUnit] := '3';
else
AImage.RemoveExtra(TiffResolutionUnit);
end;
if (FXResolution.Denominator = 0) and (FXResolution.Numerator = 0)
then AImage.RemoveExtra(TiffXResolution)
else AImage.Extra[TiffXResolution] := TiffRationalToStr(FXResolution);
if (FYResolution.Denominator = 0) and (FYResolution.Numerator = 0)
then AImage.RemoveExtra(TiffYResolution)
else AImage.Extra[TiffYResolution] := TiffRationalToStr(FYResolution);
if FHostComputer = ''
then AImage.RemoveExtra(LazTiffHostComputer)
else AImage.Extra[LazTiffHostComputer] := FHostComputer;
if FMake = ''
then AImage.RemoveExtra(LazTiffMake)
else AImage.Extra[LazTiffMake] := FMake;
if FModel = ''
then AImage.RemoveExtra(LazTiffModel)
else AImage.Extra[LazTiffModel] := FModel;
if FSoftware = ''
then AImage.RemoveExtra(LazTiffSoftware)
else AImage.Extra[LazTiffSoftware] := FSoftware;
end;
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