reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef SkGLCanvas_DEFINED |
| 18 | #define SkGLCanvas_DEFINED |
| 19 | |
| 20 | #include "SkCanvas.h" |
| 21 | |
| 22 | #ifdef SK_BUILD_FOR_MAC |
| 23 | #include <OpenGL/gl.h> |
| 24 | #elif defined(ANDROID) |
| 25 | #include <GLES/gl.h> |
| 26 | #endif |
| 27 | |
| 28 | class SkGLDevice; |
| 29 | class SkGLClipIter; |
| 30 | |
| 31 | class SkGLCanvas : public SkCanvas { |
| 32 | public: |
| 33 | // notice, we do NOT allow the SkCanvas(bitmap) constructor, since that |
| 34 | // does not create a SkGLDevice, which we require |
| 35 | SkGLCanvas(); |
| 36 | virtual ~SkGLCanvas(); |
| 37 | |
| 38 | // overrides from SkCanvas |
| 39 | |
| 40 | virtual bool getViewport(SkIPoint*) const; |
| 41 | virtual bool setViewport(int width, int height); |
| 42 | |
| 43 | virtual SkDevice* createDevice(SkBitmap::Config, int width, int height, |
| 44 | bool isOpaque, bool isForLayer); |
| 45 | |
| 46 | // settings for the global texture cache |
| 47 | |
| 48 | static size_t GetTextureCacheMaxCount(); |
| 49 | static void SetTextureCacheMaxCount(size_t count); |
| 50 | |
| 51 | static size_t GetTextureCacheMaxSize(); |
| 52 | static void SetTextureCacheMaxSize(size_t size); |
| 53 | |
| 54 | /** Call glDeleteTextures for all textures (including those for text) |
| 55 | This should be called while the gl-context is still valid. Its purpose |
| 56 | is to free up gl resources. Note that if a bitmap or text is drawn after |
| 57 | this call, new caches will be created. |
| 58 | */ |
| 59 | static void DeleteAllTextures(); |
| 60 | |
| 61 | /** Forget all textures without calling delete (including those for text). |
| 62 | This should be called if the gl-context has changed, and the texture |
| 63 | IDs that have been cached are no longer valid. |
| 64 | */ |
| 65 | static void AbandonAllTextures(); |
| 66 | |
| 67 | private: |
| 68 | SkIPoint fViewportSize; |
| 69 | |
| 70 | // need to disallow this guy |
| 71 | virtual SkDevice* setBitmapDevice(const SkBitmap& bitmap) { |
| 72 | sk_throw(); |
| 73 | return NULL; |
| 74 | } |
| 75 | |
| 76 | typedef SkCanvas INHERITED; |
| 77 | }; |
| 78 | |
| 79 | #endif |
| 80 | |