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LibGUI+LibDraw: Add "Palette" concept for scoped color theming
GApplication now has a palette. This palette contains all the system theme colors by default, and is inherited by a new top-level GWidget. New child widgets inherit their parents palette. It is possible to override the GApplication palette, and the palette of any GWidget. The Palette object contains a bunch of colors, each corresponding to a ColorRole. Each role has a convenience getter as well. Each GWidget now has a background_role() and foreground_role(), which are then looked up in their current palette when painting. This means that you no longer alter the background color of a widget by setting it directly, rather you alter either its background role, or the widget's palette.
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62 changed files with 448 additions and 410 deletions
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@ -7,7 +7,6 @@ FormWidget::FormWidget(FormEditorWidget& parent)
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: GWidget(&parent)
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{
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set_fill_with_background_color(true);
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set_background_color(SystemColor::Window);
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set_relative_rect(5, 5, 400, 300);
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set_greedy_for_hits(true);
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