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Fixed some readability issues with the white and black accent colors

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This commit is contained in:
Karim Abou Zeid 2015-08-03 21:30:46 +02:00
commit 431cf23da3
5 changed files with 44 additions and 33 deletions
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14
app/src/main/java/com/kabouzeid/gramophone/util/ColorUtil.java
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@ -49,8 +49,12 @@ public class ColorUtil {
return (alpha << 24) + (0x00ffffff & Color.HSVToColor(hsv));
}
public static float getLuminance(@ColorInt int color) {
return (Color.red(color) * 0.299f + Color.green(color) * 0.587f + Color.blue(color) * 0.114f);
}
public static boolean useDarkTextColorOnBackground(@ColorInt int backgroundColor) {
return (Color.red(backgroundColor) * 0.299 + Color.green(backgroundColor) * 0.587 + Color.blue(backgroundColor) * 0.114) > (255 / 2);
return getLuminance(backgroundColor) > (255f / 2f);
}
public static int getPrimaryTextColorForBackground(final Context context, @ColorInt int backgroundColor) {
@ -60,4 +64,12 @@ public class ColorUtil {
public static int getSecondaryTextColorForBackground(final Context context, @ColorInt int backgroundColor) {
return useDarkTextColorOnBackground(backgroundColor) ? context.getResources().getColor(R.color.secondary_text_default_material_light) : context.getResources().getColor(R.color.secondary_text_default_material_dark);
}
public static boolean useDarkDrawableColorOnBackground(@ColorInt int backgroundColor) {
return getLuminance(backgroundColor) > (255f / 1.3f);
}
public static int getDrawableColorForBackground(final Context context, @ColorInt int backgroundColor) {
return useDarkDrawableColorOnBackground(backgroundColor) ? context.getResources().getColor(R.color.primary_text_default_material_light) : context.getResources().getColor(R.color.primary_text_default_material_dark);
}
}