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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 namespace { // See SkPMFloat.h | 8 namespace { // See SkPMFloat.h |
9 | 9 |
10 inline SkPMFloat::SkPMFloat(SkPMColor c) { | 10 inline SkPMFloat::SkPMFloat(SkPMColor c) { |
11 *this = SkPMFloat::FromARGB(SkGetPackedA32(c), | 11 float inv255 = 1.0f/255; |
12 SkGetPackedR32(c), | 12 *this = SkPMFloat::FromARGB(SkGetPackedA32(c) * inv255, |
13 SkGetPackedG32(c), | 13 SkGetPackedR32(c) * inv255, |
14 SkGetPackedB32(c)); | 14 SkGetPackedG32(c) * inv255, |
| 15 SkGetPackedB32(c) * inv255); |
15 SkASSERT(this->isValid()); | 16 SkASSERT(this->isValid()); |
16 } | 17 } |
17 | 18 |
18 inline SkPMColor SkPMFloat::trunc() const { | |
19 return SkPackARGB32(this->a(), this->r(), this->g(), this->b()); | |
20 } | |
21 | |
22 inline SkPMColor SkPMFloat::round() const { | 19 inline SkPMColor SkPMFloat::round() const { |
23 SkPMColor c = SkPackARGB32(this->a()+0.5f, this->r()+0.5f, this->g()+0.5f, t
his->b()+0.5f); | 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); |
24 SkPMColorAssert(c); | 29 SkPMColorAssert(c); |
25 return c; | 30 return c; |
26 } | 31 } |
27 | 32 |
28 inline SkPMColor SkPMFloat::roundClamp() const { | |
29 float a = this->a(), | |
30 r = this->r(), | |
31 g = this->g(), | |
32 b = this->b(); | |
33 a = a < 0 ? 0 : (a > 255 ? 255 : a); | |
34 r = r < 0 ? 0 : (r > 255 ? 255 : r); | |
35 g = g < 0 ? 0 : (g > 255 ? 255 : g); | |
36 b = b < 0 ? 0 : (b > 255 ? 255 : b); | |
37 SkPMColor c = SkPackARGB32(a+0.5f, r+0.5f, g+0.5f, b+0.5f); | |
38 SkPMColorAssert(c); | |
39 return c; | |
40 } | |
41 | |
42 inline void SkPMFloat::From4PMColors(const SkPMColor colors[4], | |
43 SkPMFloat* a, SkPMFloat* b, SkPMFloat* c, S
kPMFloat* d) { | |
44 *a = FromPMColor(colors[0]); | |
45 *b = FromPMColor(colors[1]); | |
46 *c = FromPMColor(colors[2]); | |
47 *d = FromPMColor(colors[3]); | |
48 } | |
49 | |
50 inline void SkPMFloat::RoundTo4PMColors( | |
51 const SkPMFloat& a, const SkPMFloat& b, const SkPMFloat&c, const SkPMFlo
at& d, | |
52 SkPMColor colors[4]) { | |
53 colors[0] = a.round(); | |
54 colors[1] = b.round(); | |
55 colors[2] = c.round(); | |
56 colors[3] = d.round(); | |
57 } | |
58 | |
59 inline void SkPMFloat::RoundClampTo4PMColors( | |
60 const SkPMFloat& a, const SkPMFloat& b, const SkPMFloat&c, const SkPMFlo
at& d, | |
61 SkPMColor colors[4]) { | |
62 colors[0] = a.roundClamp(); | |
63 colors[1] = b.roundClamp(); | |
64 colors[2] = c.roundClamp(); | |
65 colors[3] = d.roundClamp(); | |
66 } | |
67 | |
68 } // namespace | 33 } // namespace |
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