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Diffstat (limited to 'libs/hwui/PathCache.h')
| -rw-r--r-- | libs/hwui/PathCache.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/libs/hwui/PathCache.h b/libs/hwui/PathCache.h new file mode 100644 index 0000000..dc67e16 --- /dev/null +++ b/libs/hwui/PathCache.h @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2010 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 ANDROID_HWUI_PATH_CACHE_H +#define ANDROID_HWUI_PATH_CACHE_H + +#include <utils/Vector.h> + +#include "Debug.h" +#include "ShapeCache.h" + +#include "utils/Compare.h" + +namespace android { +namespace uirenderer { + +/////////////////////////////////////////////////////////////////////////////// +// Classes +/////////////////////////////////////////////////////////////////////////////// + +struct PathCacheEntry: public ShapeCacheEntry { + PathCacheEntry(SkPath* path, SkPaint* paint): + ShapeCacheEntry(ShapeCacheEntry::kShapePath, paint) { + this->path = path; + } + + PathCacheEntry(): ShapeCacheEntry() { + path = NULL; + } + + PathCacheEntry(const PathCacheEntry& entry): + ShapeCacheEntry(entry) { + path = entry.path; + } + + bool lessThan(const ShapeCacheEntry& r) const { + const PathCacheEntry& rhs = (const PathCacheEntry&) r; + LTE_INT(path) { + return false; + } + return false; + } + + SkPath* path; +}; // PathCacheEntry + +/** + * A simple LRU path cache. The cache has a maximum size expressed in bytes. + * Any texture added to the cache causing the cache to grow beyond the maximum + * allowed size will also cause the oldest texture to be kicked out. + */ +class PathCache: public ShapeCache<PathCacheEntry> { +public: + PathCache(); + + /** + * Returns the texture associated with the specified path. If the texture + * cannot be found in the cache, a new texture is generated. + */ + PathTexture* get(SkPath* path, SkPaint* paint); + /** + * Removes an entry. + */ + void remove(SkPath* path); + /** + * Removes the specified path. This is meant to be called from threads + * that are not the EGL context thread. + */ + void removeDeferred(SkPath* path); + /** + * Process deferred removals. + */ + void clearGarbage(); + +private: + Vector<SkPath*> mGarbage; + mutable Mutex mLock; +}; // class PathCache + +}; // namespace uirenderer +}; // namespace android + +#endif // ANDROID_HWUI_PATH_CACHE_H |
