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LibGUI+LibDraw: Add "Palette" concept for scoped color theming

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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.
This commit is contained in:
Andreas Kling 2019-12-24 20:57:54 +01:00
parent cb4e51a7a5
commit a79bac428b
Notes: sideshowbarker 2024-07-19 10:42:29 +09:00
62 changed files with 448 additions and 410 deletions
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4
Libraries/LibHTML/HtmlView.cpp
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@ -118,7 +118,7 @@ void HtmlView::paint_event(GPaintEvent& event)
painter.add_clip_rect(event.rect());
if (!layout_root()) {
painter.fill_rect(event.rect(), background_color());
painter.fill_rect(event.rect(), palette().color(background_role()));
return;
}
@ -131,7 +131,7 @@ void HtmlView::paint_event(GPaintEvent& event)
painter.translate(frame_thickness(), frame_thickness());
painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
RenderingContext context { painter };
RenderingContext context(painter, palette());
context.set_should_show_line_box_borders(m_should_show_line_box_borders);
context.set_viewport_rect(visible_content_rect());
layout_root()->render(context);