The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/effects/gradients/SkClampRange.h
gfx/skia/trunk/src/effects/gradients/SkClampRange.h
- branch
- TOR_BUG_3246
- changeset 5
- 4ab42b5ab56c
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| -1:000000000000 | 0:b43bf33c30ff |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2011 Google Inc. | |
| 4 * | |
| 5 * Use of this source code is governed by a BSD-style license that can be | |
| 6 * found in the LICENSE file. | |
| 7 */ | |
| 8 | |
| 9 | |
| 10 #ifndef SkClampRange_DEFINED | |
| 11 #define SkClampRange_DEFINED | |
| 12 | |
| 13 #include "SkFixed.h" | |
| 14 | |
| 15 /** | |
| 16 * Iteration fixed fx by dx, clamping as you go to [0..0xFFFF], this class | |
| 17 * computes the (up to) 3 spans there are: | |
| 18 * | |
| 19 * range0: use constant value V0 | |
| 20 * range1: iterate as usual fx += dx | |
| 21 * range2: use constant value V1 | |
| 22 */ | |
| 23 struct SkClampRange { | |
| 24 int fCount0; // count for fV0 | |
| 25 int fCount1; // count for interpolating (fV0...fV1) | |
| 26 int fCount2; // count for fV1 | |
| 27 SkFixed fFx1; // initial fx value for the fCount1 range. | |
| 28 // only valid if fCount1 > 0 | |
| 29 int fV0, fV1; | |
| 30 bool fOverflowed; // true if we had to clamp due to numerical overflow | |
| 31 | |
| 32 void init(SkFixed fx, SkFixed dx, int count, int v0, int v1); | |
| 33 | |
| 34 private: | |
| 35 void initFor1(SkFixed fx); | |
| 36 }; | |
| 37 | |
| 38 #endif |
