blob: 8ed4bec409f9c99e56f0d412a477bb1ec6156646 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gfx/skia_utils_gtk.h"
#include <gdk/gdkcolor.h>
namespace gfx {
const int kSkiaToGDKMultiplier = 257;
// GDK_COLOR_RGB multiplies by 257 (= 0x10001) to distribute the bits evenly
// See: http://www.mindcontrol.org/~hplus/graphics/expand-bits.html
// To get back, we can just right shift by eight
// (or, formulated differently, i == (i*257)/256 for all i < 256).
SkColor GdkColorToSkColor(GdkColor color) {
return SkColorSetRGB(color.red >> 8, color.green >> 8, color.blue >> 8);
}
GdkColor SkColorToGdkColor(SkColor color) {
GdkColor gdk_color = {
0,
SkColorGetR(color) * kSkiaToGDKMultiplier,
SkColorGetG(color) * kSkiaToGDKMultiplier,
SkColorGetB(color) * kSkiaToGDKMultiplier
};
return gdk_color;
}
} // namespace gfx
|