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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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5
Servers/WindowServer/WSButton.cpp
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@ -18,14 +18,15 @@ WSButton::~WSButton()
void WSButton::paint(Painter& painter)
{
auto& palette = WSWindowManager::the().palette();
PainterStateSaver saver(painter);
painter.translate(relative_rect().location());
StylePainter::paint_button(painter, rect(), ButtonStyle::Normal, m_pressed, m_hovered);
StylePainter::paint_button(painter, rect(), palette, ButtonStyle::Normal, m_pressed, m_hovered);
auto x_location = rect().center();
x_location.move_by(-(m_bitmap->width() / 2), -(m_bitmap->height() / 2));
if (m_pressed)
x_location.move_by(1, 1);
painter.draw_bitmap(x_location, *m_bitmap, SystemColor::ButtonText);
painter.draw_bitmap(x_location, *m_bitmap, palette.button_text());
}
void WSButton::on_mouse_event(const WSMouseEvent& event)