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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

@ -4,6 +4,7 @@
#include <AK/String.h>
#include <AK/Types.h>
enum class ColorRole;
typedef u32 RGBA32;
inline constexpr u32 make_rgb(u8 r, u8 g, u8 b)
@ -11,38 +12,6 @@ inline constexpr u32 make_rgb(u8 r, u8 g, u8 b)
return ((r << 16) | (g << 8) | b);
}
enum class SystemColor {
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,
DisabledText = ThreedShadow1,
};
class Color {
public:
enum NamedColor {
@ -71,7 +40,6 @@ public:
Color() {}
Color(NamedColor);
Color(SystemColor);
Color(u8 r, u8 g, u8 b)
: m_value(0xff000000 | (r << 16) | (g << 8) | b)
{