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1 /* | |
2 * Copyright 2015 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 namespace { // See SkPMFloat.h | |
9 | |
10 inline SkPMFloat::SkPMFloat(SkPMColor c) { | |
11 float inv255 = 1.0f/255; | |
12 *this = SkPMFloat::FromARGB(SkGetPackedA32(c) * inv255, | |
13 SkGetPackedR32(c) * inv255, | |
14 SkGetPackedG32(c) * inv255, | |
15 SkGetPackedB32(c) * inv255); | |
16 SkASSERT(this->isValid()); | |
17 } | |
18 | |
19 inline SkPMColor SkPMFloat::round() const { | |
20 float a = this->a(), | |
21 r = this->r(), | |
22 g = this->g(), | |
23 b = this->b(); | |
24 a = a < 0 ? 0 : (a > 1 ? 1 : a); | |
25 r = r < 0 ? 0 : (r > 1 ? 1 : r); | |
26 g = g < 0 ? 0 : (g > 1 ? 1 : g); | |
27 b = b < 0 ? 0 : (b > 1 ? 1 : b); | |
28 SkPMColor c = SkPackARGB32(255*a+0.5f, 255*r+0.5f, 255*g+0.5f, 255*b+0.5f); | |
29 SkPMColorAssert(c); | |
30 return c; | |
31 } | |
32 | |
33 inline Sk4f SkPMFloat::alphas() const { | |
34 return Sk4f(this->a()); | |
35 } | |
36 | |
37 inline SkPMFloat SkPMFloat::FromOpaqueColor(SkColor c) { | |
38 SkASSERT(SkColorGetA(c) == 0xFF); | |
39 float inv255 = 1.0f / 255; | |
40 SkPMFloat pmf = SkPMFloat::FromARGB(1.0f, | |
41 SkColorGetR(c) * inv255, | |
42 SkColorGetG(c) * inv255, | |
43 SkColorGetB(c) * inv255); | |
44 SkASSERT(pmf.isValid()); | |
45 return pmf; | |
46 } | |
47 | |
48 } // namespace | |
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