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{%MainUnit ../graphics.pp}
{******************************************************************************
TPortableAnyMapGraphic
******************************************************************************
*****************************************************************************
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.
*****************************************************************************
}
{ TPortableAnyMapGraphic }
class function TPortableAnyMapGraphic.GetFileExtensions: string;
begin
Result:='pbm;pgm;ppm';
end;
class function TPortableAnyMapGraphic.GetReaderClass: TFPCustomImageReaderClass;
begin
Result := TFPReaderPNM;
end;
class function TPortableAnyMapGraphic.GetSharedImageClass: TSharedRasterImageClass;
begin
Result := TSharedPortableAnyMapGraphic;
end;
class function TPortableAnyMapGraphic.IsStreamFormatSupported(Stream: TStream): Boolean;
var
Pos: Int64;
C: array [0..1] of Char;
r: integer;
begin
Pos := Stream.Position;
try
r := Stream.Read(C, 2);
if r = 2 then
begin
Result := (C[0] = 'P');
Result := Result and ((Ord(C[1])-Ord('0')) in [1..6]); // P1,P2,..,P6
end else begin
Result := False;
end;
finally
Stream.Position := Pos;
end;
end;
class function TPortableAnyMapGraphic.GetWriterClass: TFPCustomImageWriterClass;
begin
Result := TFPWriterPNM;
end;
// included by graphics.pp
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