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Merge branch 'fix_SVG_premultiply' of https://github.com/teliseo/wxWidgets

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Fix wxBitmapBundle::FromSVG(), which renders incorrectly on GTK and add
wxHAS_PREMULTIPLIED_ALPHA to make the code dealing with alpha more clear
and correct.

See #24097.
This commit is contained in:
Vadim Zeitlin 2023-11-30 02:35:20 +01:00
commit 5318637839
9 changed files with 124 additions and 39 deletions
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4
docs/doxygen/mainpages/const_cpp.h
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@ -210,6 +210,10 @@ Currently the following symbols exist:
Windows resource files</a> resource files are available on the current platform.
Usually wxHAS_IMAGE_RESOURCES should be used instead.}
@itemdef{wxHAS_POWER_EVENTS, Defined if wxPowerEvent are ever generated on the current platform.}
@itemdef{wxHAS_PREMULTIPLIED_ALPHA, Defined if wxBitmap stores raw pixel color
values premultiplied (scaled) by alpha. This is generally used to switch
whether to premultiply before storing pixels via wxAlphaPixelData converted
from a straight alpha source.}
@itemdef{wxHAS_RADIO_MENU_ITEMS,
Defined if the current port supports radio menu items (see wxMenu::AppendRadioItem).}
@itemdef{wxHAS_RAW_BITMAP, Defined if direct access to bitmap data using the classes in @c wx/rawbmp.h is supported.}