rgb_color: Add new APIs: Contrast(), IsLight(), IsDark()

- Remove perceptual_brightness - Change implementation of rgb_color::Brightness() to the previous BPrivate::perceptual_brightness() - Introduce convenience methods Contrast(rgb_color), IsLight() and IsDark() Change-Id: Id677d4a32ce43d73bffecf9baf8cffaafb01a16d Reviewed-on: https://review.haiku-os.org/c/haiku/+/7399 Reviewed-by: waddlesplash <[email protected]>
2024-02-26 20:24:25 +00:00
parent d24476aaf0
commit 9931e8eeee
7 changed files with 39 additions and 44 deletions
@@ -65,19 +65,6 @@ private:
 };


-static inline uint8 perceptual_brightness(rgb_color color)
-{
-	// From http://alienryderflex.com/hsp.html
-	// Useful in particular to decide if the color is "light" or "dark"
-	// by checking if the perceptual brightness is > 127.
-	int r = color.red;
-	int g = color.green;
-	int b = color.blue;
-
-	return (uint8)roundf(sqrtf(
-		0.299f * r * r + 0.587f * g * g + 0.114 * b * b));
-}
-
 }	// namespace BPrivate

 #endif