diff options
Diffstat (limited to 'eel')
| -rw-r--r-- | eel/eel-gdk-extensions.c | 30 | ||||
| -rw-r--r-- | eel/eel-gdk-extensions.h | 2 |
2 files changed, 32 insertions, 0 deletions
diff --git a/eel/eel-gdk-extensions.c b/eel/eel-gdk-extensions.c index 31ff008eb..2dc66c31c 100644 --- a/eel/eel-gdk-extensions.c +++ b/eel/eel-gdk-extensions.c @@ -474,6 +474,36 @@ eel_cairo_draw_layout_with_drop_shadow (cairo_t *cr, cairo_restore (cr); } +#define CLAMP_COLOR(v) (t = (v), CLAMP (t, 0, G_MAXUSHORT)) +#define SATURATE(v) ((1.0 - saturation) * intensity + saturation * (v)) + +void +eel_make_color_inactive (GdkColor *color) +{ + double intensity, saturation; + gushort t; + + saturation = 0.7; + intensity = color->red * 0.30 + color->green * 0.59 + color->blue * 0.11; + color->red = SATURATE (color->red); + color->green = SATURATE (color->green); + color->blue = SATURATE (color->blue); + + if (intensity > G_MAXUSHORT / 2) { + color->red *= 0.9; + color->green *= 0.9; + color->blue *= 0.9; + } else { + color->red *= 1.25; + color->green *= 1.25; + color->blue *= 1.25; + } + + color->red = CLAMP_COLOR (color->red); + color->green = CLAMP_COLOR (color->green); + color->blue = CLAMP_COLOR (color->blue); +} + #if ! defined (EEL_OMIT_SELF_CHECK) static char * diff --git a/eel/eel-gdk-extensions.h b/eel/eel-gdk-extensions.h index b3778c6f3..b135264e8 100644 --- a/eel/eel-gdk-extensions.h +++ b/eel/eel-gdk-extensions.h @@ -123,4 +123,6 @@ void eel_cairo_draw_layout_with_drop_shadow (cairo_t int x, int y, PangoLayout *layout); +void eel_make_color_inactive (GdkColor *color); + #endif /* EEL_GDK_EXTENSIONS_H */ |