/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkBitmapProvider_DEFINED
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#define SkBitmapProvider_DEFINED
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#include "SkImage.h"
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#include "SkBitmapCache.h"
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class SkBitmapProvider {
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public:
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explicit SkBitmapProvider(const SkImage* img)
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: fImage(img) {
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SkASSERT(img);
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}
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SkBitmapProvider(const SkBitmapProvider& other)
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: fImage(other.fImage)
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{}
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SkBitmapCacheDesc makeCacheDesc() const;
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void notifyAddedToCache() const;
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// Only call this if you're sure you need the bits, since it maybe expensive
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// ... cause a decode and cache, or gpu-readback
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bool asBitmap(SkBitmap*) const;
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private:
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// Stack-allocated only.
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void* operator new(size_t) = delete;
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void* operator new(size_t, void*) = delete;
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// SkBitmapProvider is always short-lived/stack allocated, and the source image is guaranteed
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// to outlive its scope => we can store a raw ptr to avoid ref churn.
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const SkImage* fImage;
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};
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#endif
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