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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.
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

View file

@ -4,43 +4,43 @@
#include <LibC/SharedBuffer.h>
#include <LibDraw/Color.h>
enum class ColorRole {
NoRole,
DesktopBackground,
ActiveWindowBorder1,
ActiveWindowBorder2,
ActiveWindowTitle,
InactiveWindowBorder1,
InactiveWindowBorder2,
InactiveWindowTitle,
MovingWindowBorder1,
MovingWindowBorder2,
MovingWindowTitle,
HighlightWindowBorder1,
HighlightWindowBorder2,
HighlightWindowTitle,
MenuStripe,
MenuBase,
MenuSelection,
Window,
WindowText,
Button,
ButtonText,
Base,
ThreedHighlight,
ThreedShadow1,
ThreedShadow2,
HoverHighlight,
Selection,
SelectionText,
__Count,
DisabledText = ThreedShadow1,
};
struct SystemTheme {
Color desktop_background;
Color active_window_border1;
Color active_window_border2;
Color active_window_title;
Color inactive_window_border1;
Color inactive_window_border2;
Color inactive_window_title;
Color moving_window_border1;
Color moving_window_border2;
Color moving_window_title;
Color highlight_window_border1;
Color highlight_window_border2;
Color highlight_window_title;
Color menu_stripe;
Color menu_base;
Color menu_selection;
Color window;
Color window_text;
Color base;
Color button;
Color button_text;
Color threed_highlight;
Color threed_shadow1;
Color threed_shadow2;
Color hover_highlight;
Color selection;
Color selection_text;
Color color[(int)ColorRole::__Count];
};
const SystemTheme& current_system_theme();