54924243c1
The following changes were made by this CL: 1. Make flatten() a protected method as callers should use SkFlattenableWriteBuffer to flatten an object 2. Make flatten a const method (including subclasses) 3. Mark subclass implementation of flatten with SK_OVERRIDE 4. Ensure overridden flatten impls call their parent 5. Remove no-op implementations of flatten from subclasses Additionally, if necessary the unflattening constructor was also moved to the protected section of the subclasses header if it was not already there. git-svn-id: http://skia.googlecode.com/svn/trunk@3540 2bbb7eff-a529-9590-31e7-b0007b416f81
103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
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/*
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* Copyright 2008 The Android Open Source Project
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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 SkFlipPixelRef_DEFINED
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#define SkFlipPixelRef_DEFINED
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#include "SkBitmap.h"
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#include "SkPageFlipper.h"
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#include "SkPixelRef.h"
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#include "SkThread.h"
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class SkRegion;
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class SkFlipPixelRef : public SkPixelRef {
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public:
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SkFlipPixelRef(SkBitmap::Config, int width, int height);
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virtual ~SkFlipPixelRef();
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bool isDirty() const { return fFlipper.isDirty(); }
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const SkRegion& dirtyRgn() const { return fFlipper.dirtyRgn(); }
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void inval() { fFlipper.inval(); }
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void inval(const SkIRect& rect) { fFlipper.inval(rect); }
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void inval(const SkRegion& rgn) { fFlipper.inval(rgn); }
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void inval(const SkRect& r, bool doAA) { fFlipper.inval(r, doAA); }
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const SkRegion& beginUpdate(SkBitmap* device);
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void endUpdate();
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SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkFlipPixelRef)
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protected:
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virtual void* onLockPixels(SkColorTable**);
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virtual void onUnlockPixels();
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SkFlipPixelRef(SkFlattenableReadBuffer&);
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virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE;
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private:
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void getFrontBack(const void** front, void** back) const {
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if (front) {
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*front = fPage0;
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}
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if (back) {
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*back = fPage1;
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}
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}
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void swapPages();
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// Helper to copy pixels from srcAddr to the dst bitmap, clipped to clip.
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// srcAddr points to memory with the same config as dst.
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static void CopyBitsFromAddr(const SkBitmap& dst, const SkRegion& clip,
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const void* srcAddr);
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SkMutex fMutex;
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SkPageFlipper fFlipper;
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void* fStorage;
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void* fPage0; // points into fStorage;
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void* fPage1; // points into fStorage;
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size_t fSize; // size of 1 page. fStorage holds 2 pages
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SkBitmap::Config fConfig;
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typedef SkPixelRef INHERITED;
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};
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class SkAutoFlipUpdate : SkNoncopyable {
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public:
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SkAutoFlipUpdate(SkFlipPixelRef* ref) : fRef(ref) {
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fDirty = &ref->beginUpdate(&fBitmap);
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}
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~SkAutoFlipUpdate() {
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if (fRef) {
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fRef->endUpdate();
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}
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}
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const SkBitmap& bitmap() const { return fBitmap; }
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const SkRegion& dirty() const { return *fDirty; }
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// optional. This gets automatically called in the destructor (only once)
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void endUpdate() {
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if (fRef) {
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fRef->endUpdate();
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fRef = NULL;
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}
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}
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private:
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SkFlipPixelRef* fRef;
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SkBitmap fBitmap;
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const SkRegion* fDirty;
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};
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#endif
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