gfx/skia/trunk/src/image/SkSurface_Base.h@129ffea94266 (annotated)
gfx/skia/trunk/src/image/SkSurface_Base.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright 2012 Google Inc. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 5 | * found in the LICENSE file. |
| michael@0 | 6 | */ |
| michael@0 | 7 | |
| michael@0 | 8 | #ifndef SkSurface_Base_DEFINED |
| michael@0 | 9 | #define SkSurface_Base_DEFINED |
| michael@0 | 10 | |
| michael@0 | 11 | #include "SkSurface.h" |
| michael@0 | 12 | #include "SkCanvas.h" |
| michael@0 | 13 | |
| michael@0 | 14 | class SkSurface_Base : public SkSurface { |
| michael@0 | 15 | public: |
| michael@0 | 16 | SkSurface_Base(int width, int height); |
| michael@0 | 17 | explicit SkSurface_Base(const SkImageInfo&); |
| michael@0 | 18 | virtual ~SkSurface_Base(); |
| michael@0 | 19 | |
| michael@0 | 20 | /** |
| michael@0 | 21 | * Allocate a canvas that will draw into this surface. We will cache this |
| michael@0 | 22 | * canvas, to return the same object to the caller multiple times. We |
| michael@0 | 23 | * take ownership, and will call unref() on the canvas when we go out of |
| michael@0 | 24 | * scope. |
| michael@0 | 25 | */ |
| michael@0 | 26 | virtual SkCanvas* onNewCanvas() = 0; |
| michael@0 | 27 | |
| michael@0 | 28 | virtual SkSurface* onNewSurface(const SkImageInfo&) = 0; |
| michael@0 | 29 | |
| michael@0 | 30 | /** |
| michael@0 | 31 | * Allocate an SkImage that represents the current contents of the surface. |
| michael@0 | 32 | * This needs to be able to outlive the surface itself (if need be), and |
| michael@0 | 33 | * must faithfully represent the current contents, even if the surface |
| michael@0 | 34 | * is chaged after this calle (e.g. it is drawn to via its canvas). |
| michael@0 | 35 | */ |
| michael@0 | 36 | virtual SkImage* onNewImageSnapshot() = 0; |
| michael@0 | 37 | |
| michael@0 | 38 | /** |
| michael@0 | 39 | * Default implementation: |
| michael@0 | 40 | * |
| michael@0 | 41 | * image = this->newImageSnapshot(); |
| michael@0 | 42 | * if (image) { |
| michael@0 | 43 | * image->draw(canvas, ...); |
| michael@0 | 44 | * image->unref(); |
| michael@0 | 45 | * } |
| michael@0 | 46 | */ |
| michael@0 | 47 | virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkPaint*); |
| michael@0 | 48 | |
| michael@0 | 49 | /** |
| michael@0 | 50 | * If the surface is about to change, we call this so that our subclass |
| michael@0 | 51 | * can optionally fork their backend (copy-on-write) in case it was |
| michael@0 | 52 | * being shared with the cachedImage. |
| michael@0 | 53 | */ |
| michael@0 | 54 | virtual void onCopyOnWrite(ContentChangeMode) = 0; |
| michael@0 | 55 | |
| michael@0 | 56 | inline SkCanvas* getCachedCanvas(); |
| michael@0 | 57 | inline SkImage* getCachedImage(); |
| michael@0 | 58 | |
| michael@0 | 59 | // called by SkSurface to compute a new genID |
| michael@0 | 60 | uint32_t newGenerationID(); |
| michael@0 | 61 | |
| michael@0 | 62 | private: |
| michael@0 | 63 | SkCanvas* fCachedCanvas; |
| michael@0 | 64 | SkImage* fCachedImage; |
| michael@0 | 65 | |
| michael@0 | 66 | void aboutToDraw(ContentChangeMode mode); |
| michael@0 | 67 | friend class SkCanvas; |
| michael@0 | 68 | friend class SkSurface; |
| michael@0 | 69 | |
| michael@0 | 70 | inline void installIntoCanvasForDirtyNotification(); |
| michael@0 | 71 | |
| michael@0 | 72 | typedef SkSurface INHERITED; |
| michael@0 | 73 | }; |
| michael@0 | 74 | |
| michael@0 | 75 | SkCanvas* SkSurface_Base::getCachedCanvas() { |
| michael@0 | 76 | if (NULL == fCachedCanvas) { |
| michael@0 | 77 | fCachedCanvas = this->onNewCanvas(); |
| michael@0 | 78 | this->installIntoCanvasForDirtyNotification(); |
| michael@0 | 79 | } |
| michael@0 | 80 | return fCachedCanvas; |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | SkImage* SkSurface_Base::getCachedImage() { |
| michael@0 | 84 | if (NULL == fCachedImage) { |
| michael@0 | 85 | fCachedImage = this->onNewImageSnapshot(); |
| michael@0 | 86 | this->installIntoCanvasForDirtyNotification(); |
| michael@0 | 87 | } |
| michael@0 | 88 | return fCachedImage; |
| michael@0 | 89 | } |
| michael@0 | 90 | |
| michael@0 | 91 | void SkSurface_Base::installIntoCanvasForDirtyNotification() { |
| michael@0 | 92 | if (NULL != fCachedCanvas) { |
| michael@0 | 93 | fCachedCanvas->setSurfaceBase(this); |
| michael@0 | 94 | } |
| michael@0 | 95 | } |
| michael@0 | 96 | |
| michael@0 | 97 | #endif |
