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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
62 changed files with 448 additions and 410 deletions
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2
Libraries/LibHTML/Layout/LayoutImage.cpp
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@ -43,7 +43,7 @@ void LayoutImage::render(RenderingContext& context)
if (renders_as_alt_text()) {
context.painter().set_font(Font::default_font());
StylePainter::paint_frame(context.painter(), enclosing_int_rect(rect()), FrameShape::Container, FrameShadow::Sunken, 2);
StylePainter::paint_frame(context.painter(), enclosing_int_rect(rect()), context.palette(), FrameShape::Container, FrameShadow::Sunken, 2);
auto alt = node().alt();
if (alt.is_empty())
alt = node().src();