The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/images/SkPageFlipper.cpp
gfx/skia/trunk/src/images/SkPageFlipper.cpp
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:2e7647340c7c |
|---|---|
| 1 | |
| 2 /* | |
| 3 * Copyright 2008 The Android Open Source Project | |
| 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 #include "SkPageFlipper.h" | |
| 11 | |
| 12 SkPageFlipper::SkPageFlipper() { | |
| 13 fWidth = 0; | |
| 14 fHeight = 0; | |
| 15 fDirty0 = &fDirty0Storage; | |
| 16 fDirty1 = &fDirty1Storage; | |
| 17 | |
| 18 fDirty0->setEmpty(); | |
| 19 fDirty1->setEmpty(); | |
| 20 } | |
| 21 | |
| 22 SkPageFlipper::SkPageFlipper(int width, int height) { | |
| 23 fWidth = width; | |
| 24 fHeight = height; | |
| 25 fDirty0 = &fDirty0Storage; | |
| 26 fDirty1 = &fDirty1Storage; | |
| 27 | |
| 28 fDirty0->setRect(0, 0, width, height); | |
| 29 fDirty1->setEmpty(); | |
| 30 } | |
| 31 | |
| 32 void SkPageFlipper::resize(int width, int height) { | |
| 33 fWidth = width; | |
| 34 fHeight = height; | |
| 35 | |
| 36 // this is the opposite of the constructors | |
| 37 fDirty1->setRect(0, 0, width, height); | |
| 38 fDirty0->setEmpty(); | |
| 39 } | |
| 40 | |
| 41 void SkPageFlipper::inval() { | |
| 42 fDirty1->setRect(0, 0, fWidth, fHeight); | |
| 43 } | |
| 44 | |
| 45 void SkPageFlipper::inval(const SkIRect& rect) { | |
| 46 SkIRect r; | |
| 47 r.set(0, 0, fWidth, fHeight); | |
| 48 if (r.intersect(rect)) { | |
| 49 fDirty1->op(r, SkRegion::kUnion_Op); | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 void SkPageFlipper::inval(const SkRegion& rgn) { | |
| 54 SkRegion r; | |
| 55 r.setRect(0, 0, fWidth, fHeight); | |
| 56 if (r.op(rgn, SkRegion::kIntersect_Op)) { | |
| 57 fDirty1->op(r, SkRegion::kUnion_Op); | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 void SkPageFlipper::inval(const SkRect& rect, bool antialias) { | |
| 62 SkIRect r; | |
| 63 rect.round(&r); | |
| 64 if (antialias) { | |
| 65 r.inset(-1, -1); | |
| 66 } | |
| 67 this->inval(r); | |
| 68 } | |
| 69 | |
| 70 const SkRegion& SkPageFlipper::update(SkRegion* copyBits) { | |
| 71 // Copy over anything new from page0 that isn't dirty in page1 | |
| 72 copyBits->op(*fDirty0, *fDirty1, SkRegion::kDifference_Op); | |
| 73 SkTSwap<SkRegion*>(fDirty0, fDirty1); | |
| 74 fDirty1->setEmpty(); | |
| 75 return *fDirty0; | |
| 76 } |
