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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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@ -1,3 +1,4 @@
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#include <LibDraw/Palette.h>
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#include <LibGUI/GAction.h>
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#include <LibGUI/GActionGroup.h>
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#include <LibGUI/GBoxLayout.h>
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@ -71,8 +72,8 @@ public:
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GPainter painter(*this);
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painter.add_clip_rect(event.rect());
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painter.translate(rect().center().x() - 1, 0);
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painter.draw_line({ 0, 0 }, { 0, rect().bottom() }, SystemColor::ThreedShadow1);
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painter.draw_line({ 1, 0 }, { 1, rect().bottom() }, SystemColor::ThreedHighlight);
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painter.draw_line({ 0, 0 }, { 0, rect().bottom() }, palette().threed_shadow1());
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painter.draw_line({ 1, 0 }, { 1, rect().bottom() }, palette().threed_highlight());
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}
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};
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@ -90,7 +91,7 @@ void GToolBar::paint_event(GPaintEvent& event)
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painter.add_clip_rect(event.rect());
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if (m_has_frame)
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StylePainter::paint_surface(painter, rect(), x() != 0, y() != 0);
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StylePainter::paint_surface(painter, rect(), palette(), x() != 0, y() != 0);
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else
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painter.fill_rect(event.rect(), background_color());
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painter.fill_rect(event.rect(), palette().button());
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}
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