The Tor Browser / file comparison
comparison: gfx/skia/trunk/src/image/SkSurface_Picture.cpp
gfx/skia/trunk/src/image/SkSurface_Picture.cpp
- branch
- TOR_BUG_3246
- changeset 5
- 4ab42b5ab56c
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| -1:000000000000 | 0:cd0f8c6abaf2 |
|---|---|
| 1 /* | |
| 2 * Copyright 2012 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 #include "SkSurface_Base.h" | |
| 9 #include "SkCanvas.h" | |
| 10 #include "SkImagePriv.h" | |
| 11 #include "SkPicture.h" | |
| 12 | |
| 13 /** | |
| 14 * What does it mean to ask for more than one canvas from a picture? | |
| 15 * How do we return an Image and then "continue" recording? | |
| 16 */ | |
| 17 class SkSurface_Picture : public SkSurface_Base { | |
| 18 public: | |
| 19 SkSurface_Picture(int width, int height); | |
| 20 virtual ~SkSurface_Picture(); | |
| 21 | |
| 22 virtual SkCanvas* onNewCanvas() SK_OVERRIDE; | |
| 23 virtual SkSurface* onNewSurface(const SkImageInfo&) SK_OVERRIDE; | |
| 24 virtual SkImage* onNewImageSnapshot() SK_OVERRIDE; | |
| 25 virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, | |
| 26 const SkPaint*) SK_OVERRIDE; | |
| 27 virtual void onCopyOnWrite(ContentChangeMode) SK_OVERRIDE; | |
| 28 | |
| 29 private: | |
| 30 SkPicture* fPicture; | |
| 31 | |
| 32 typedef SkSurface_Base INHERITED; | |
| 33 }; | |
| 34 | |
| 35 /////////////////////////////////////////////////////////////////////////////// | |
| 36 | |
| 37 SkSurface_Picture::SkSurface_Picture(int width, int height) : INHERITED(width, height) { | |
| 38 fPicture = NULL; | |
| 39 } | |
| 40 | |
| 41 SkSurface_Picture::~SkSurface_Picture() { | |
| 42 SkSafeUnref(fPicture); | |
| 43 } | |
| 44 | |
| 45 SkCanvas* SkSurface_Picture::onNewCanvas() { | |
| 46 if (!fPicture) { | |
| 47 fPicture = SkNEW(SkPicture); | |
| 48 } | |
| 49 SkCanvas* canvas = fPicture->beginRecording(this->width(), this->height()); | |
| 50 canvas->ref(); // our caller will call unref() | |
| 51 return canvas; | |
| 52 } | |
| 53 | |
| 54 SkSurface* SkSurface_Picture::onNewSurface(const SkImageInfo& info) { | |
| 55 return SkSurface::NewPicture(info.fWidth, info.fHeight); | |
| 56 } | |
| 57 | |
| 58 SkImage* SkSurface_Picture::onNewImageSnapshot() { | |
| 59 if (fPicture) { | |
| 60 return SkNewImageFromPicture(fPicture); | |
| 61 } else { | |
| 62 SkImageInfo info; | |
| 63 info.fWidth = info.fHeight = 0; | |
| 64 info.fColorType = kPMColor_SkColorType; | |
| 65 info.fAlphaType = kOpaque_SkAlphaType; | |
| 66 return SkImage::NewRasterCopy(info, NULL, 0); | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 void SkSurface_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, | |
| 71 const SkPaint* paint) { | |
| 72 if (!fPicture) { | |
| 73 return; | |
| 74 } | |
| 75 SkImagePrivDrawPicture(canvas, fPicture, x, y, paint); | |
| 76 } | |
| 77 | |
| 78 void SkSurface_Picture::onCopyOnWrite(ContentChangeMode /*mode*/) { | |
| 79 // We always spawn a copy of the recording picture when we | |
| 80 // are asked for a snapshot, so we never need to do anything here. | |
| 81 } | |
| 82 | |
| 83 /////////////////////////////////////////////////////////////////////////////// | |
| 84 | |
| 85 | |
| 86 SkSurface* SkSurface::NewPicture(int width, int height) { | |
| 87 if ((width | height) < 0) { | |
| 88 return NULL; | |
| 89 } | |
| 90 | |
| 91 return SkNEW_ARGS(SkSurface_Picture, (width, height)); | |
| 92 } |
