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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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4
Servers/WindowServer/main.cpp
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@ -1,4 +1,5 @@
#include <LibCore/CConfigFile.h>
#include <LibDraw/Palette.h>
#include <LibDraw/SystemTheme.h>
#include <WindowServer/WSCompositor.h>
#include <WindowServer/WSEventLoop.h>
@ -25,13 +26,14 @@ int main(int, char**)
auto theme = load_system_theme(String::format("/res/themes/%s.ini", theme_name.characters()));
ASSERT(theme);
set_system_theme(*theme);
auto palette = Palette::create_with_shared_buffer(*theme);
WSEventLoop loop;
WSScreen screen(wm_config->read_num_entry("Screen", "Width", 1024),
wm_config->read_num_entry("Screen", "Height", 768));
WSCompositor::the();
auto wm = WSWindowManager::construct();
auto wm = WSWindowManager::construct(*palette);
dbgprintf("Entering WindowServer main loop.\n");
loop.exec();