Initial Contribution

1 files changed, 80 insertions, 0 deletions

diff --git a/include/graphics/SkGLCanvas.h b/include/graphics/SkGLCanvas.h
new file mode 100644
index 0000000..40fc52d
--- /dev/null
+++ b/include/graphics/SkGLCanvas.h
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2006 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SkGLCanvas_DEFINED
+#define SkGLCanvas_DEFINED
+
+#include "SkCanvas.h"
+
+#ifdef SK_BUILD_FOR_MAC
+    #include <OpenGL/gl.h>
+#elif defined(ANDROID)
+    #include <GLES/gl.h>
+#endif
+
+class SkGLDevice;
+class SkGLClipIter;
+
+class SkGLCanvas : public SkCanvas {
+public:
+    // notice, we do NOT allow the SkCanvas(bitmap) constructor, since that
+    // does not create a SkGLDevice, which we require
+    SkGLCanvas();
+    virtual ~SkGLCanvas();
+
+    // overrides from SkCanvas
+
+    virtual bool getViewport(SkIPoint*) const;
+    virtual bool setViewport(int width, int height);
+
+    virtual SkDevice* createDevice(SkBitmap::Config, int width, int height,
+                                   bool isOpaque, bool isForLayer);
+
+    // settings for the global texture cache
+
+    static size_t GetTextureCacheMaxCount();
+    static void SetTextureCacheMaxCount(size_t count);
+
+    static size_t GetTextureCacheMaxSize();
+    static void SetTextureCacheMaxSize(size_t size);
+
+    /** Call glDeleteTextures for all textures (including those for text)
+        This should be called while the gl-context is still valid. Its purpose
+        is to free up gl resources. Note that if a bitmap or text is drawn after
+        this call, new caches will be created.
+    */
+    static void DeleteAllTextures();
+
+    /** Forget all textures without calling delete (including those for text).
+        This should be called if the gl-context has changed, and the texture
+        IDs that have been cached are no longer valid.
+    */
+    static void AbandonAllTextures();
+
+private:
+    SkIPoint fViewportSize;
+
+    // need to disallow this guy
+    virtual SkDevice* setBitmapDevice(const SkBitmap& bitmap) {
+        sk_throw();
+        return NULL;
+    }
+
+    typedef SkCanvas INHERITED;
+};
+
+#endif
+