93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_HWUI_PATH_CACHE_H
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#define ANDROID_HWUI_PATH_CACHE_H
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#include <utils/Vector.h>
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#include "Debug.h"
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#include "ShapeCache.h"
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#include "utils/Compare.h"
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Classes
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///////////////////////////////////////////////////////////////////////////////
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struct PathCacheEntry: public ShapeCacheEntry {
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PathCacheEntry(SkPath* path, SkPaint* paint):
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ShapeCacheEntry(ShapeCacheEntry::kShapePath, paint) {
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this->path = path;
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}
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PathCacheEntry(): ShapeCacheEntry() {
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path = NULL;
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}
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bool lessThan(const ShapeCacheEntry& r) const {
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const PathCacheEntry& rhs = (const PathCacheEntry&) r;
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LTE_INT(path) {
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return false;
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}
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return false;
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}
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SkPath* path;
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}; // PathCacheEntry
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/**
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* A simple LRU path cache. The cache has a maximum size expressed in bytes.
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* Any texture added to the cache causing the cache to grow beyond the maximum
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* allowed size will also cause the oldest texture to be kicked out.
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*/
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class PathCache: public ShapeCache<PathCacheEntry> {
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public:
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PathCache();
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/**
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* Returns the texture associated with the specified path. If the texture
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* cannot be found in the cache, a new texture is generated.
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*/
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PathTexture* get(SkPath* path, SkPaint* paint);
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/**
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* Removes an entry.
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*/
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void remove(SkPath* path);
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/**
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* Removes the specified path. This is meant to be called from threads
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* that are not the EGL context thread.
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*/
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void removeDeferred(SkPath* path);
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/**
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* Process deferred removals.
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*/
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void clearGarbage();
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private:
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Vector<SkPath*> mGarbage;
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mutable Mutex mLock;
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}; // class PathCache
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}; // namespace uirenderer
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}; // namespace android
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#endif // ANDROID_HWUI_PATH_CACHE_H
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