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* Improved line end detection for rawimages

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git-svn-id: trunk@6630 -
This commit is contained in:
marc 2005-01-18 00:09:31 +00:00
parent 7c5349758d
commit 3ddadc078f
1 changed files with 26 additions and 5 deletions
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31
lcl/interfaces/gtk/gtkobject.inc
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@ -2075,6 +2075,7 @@ function TGtkWidgetSet.GetWindowRawImageDescription(GDKWindow: PGdkWindow;
Desc: PRawImageDescription): boolean;
var
Visual: PGdkVisual;
Image: PGdkImage;
Width, Height: integer;
// WindowType: TGdkWindowType;
IsGdkBitmap: Boolean;
@ -2164,12 +2165,29 @@ begin
17..32: Desc^.BitsPerPixel:=32;
else Desc^.BitsPerPixel:=64;
end;
// LineEnd
case Desc^.Depth of
0..8: Desc^.LineEnd:=rileByteBoundary;
9..32: Desc^.LineEnd:=rileDWordBoundary; // On X11 i386 lines are never aligned to words, only to dwords
else Desc^.LineEnd:=rileQWordBoundary;
Image := gdk_image_new(GDK_IMAGE_NORMAL, Visual, 1, 1);
if Image = nil
then begin
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription testimage creation failed ');
Exit;
end;
try
case Image^.bpl div Image^.bpp of
1: Desc^.LineEnd:=rileByteBoundary;
2: Desc^.LineEnd:=rileWordBoundary;
4: Desc^.LineEnd:=rileDWordBoundary;
8: Desc^.LineEnd:=rileQWordBoundary;
else
DebugLn('TGtkWidgetSet.GetWindowRawImageDescription Unknown line end: %d/%d=%d', [Image^.bpl, Image^.bpp, Image^.bpl div Image^.bpp]);
Exit;
end;
finally
gdk_image_destroy(Image);
Image := nil;
end;
// Precisions and Shifts
if IsGdkBitmap then begin
Desc^.RedPrec:=1;
@ -2187,7 +2205,7 @@ begin
end;
// AlphaBitsPerPixel and AlphaLineEnd
Desc^.AlphaBitsPerPixel:=Desc^.AlphaPrec;
Desc^.AlphaLineEnd:=rileByteBoundary;
Desc^.AlphaLineEnd:=rileByteBoundary; //TODO: MWE: check if alpha ending is the same as normal ending
Desc^.AlphaBitOrder:=riboBitsInOrder;
Desc^.AlphaByteOrder:=riboLSBFirst;
@ -6994,6 +7012,9 @@ end;
{ =============================================================================
$Log$
Revision 1.618 2005/01/18 00:09:31 marc
* Improved line end detection for rawimages
Revision 1.617 2005/01/17 15:36:31 mattias
improved gtk intf to calculate TextHeight