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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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@ -1,10 +1,10 @@
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#include "TextWidget.h"
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#include <AK/String.h>
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#include <AK/StringBuilder.h>
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#include <AK/Vector.h>
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#include <LibDraw/Palette.h>
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#include <LibGUI/GPainter.h>
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#include "TextWidget.h"
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TextWidget::TextWidget(GWidget* parent)
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: GFrame(parent)
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{
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@ -49,7 +49,7 @@ void TextWidget::paint_event(GPaintEvent& event)
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text_rect.set_width(text_rect.width() - indent * 2);
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if (is_enabled()) {
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painter.draw_text(text_rect, line, m_text_alignment, foreground_color(), TextElision::None);
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painter.draw_text(text_rect, line, m_text_alignment, palette().color(foreground_role()), TextElision::None);
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} else {
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painter.draw_text(text_rect.translated(1, 1), line, font(), text_alignment(), Color::White, TextElision::Right);
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painter.draw_text(text_rect, line, font(), text_alignment(), Color::from_rgb(0x808080), TextElision::Right);
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