skia2/include/images/SkFlipPixelRef.h
epoger@google.com ec3ed6a5eb Automatic update of all copyright notices to reflect new license terms.
I have manually examined all of these diffs and restored a few files that
seem to require manual adjustment.

The following files still need to be modified manually, in a separate CL:

android_sample/SampleApp/AndroidManifest.xml
android_sample/SampleApp/res/layout/layout.xml
android_sample/SampleApp/res/menu/sample.xml
android_sample/SampleApp/res/values/strings.xml
android_sample/SampleApp/src/com/skia/sampleapp/SampleApp.java
android_sample/SampleApp/src/com/skia/sampleapp/SampleView.java
experimental/CiCarbonSampleMain.c
experimental/CocoaDebugger/main.m
experimental/FileReaderApp/main.m
experimental/SimpleCocoaApp/main.m
experimental/iOSSampleApp/Shared/SkAlertPrompt.h
experimental/iOSSampleApp/Shared/SkAlertPrompt.m
experimental/iOSSampleApp/SkiOSSampleApp-Base.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Debug.xcconfig
experimental/iOSSampleApp/SkiOSSampleApp-Release.xcconfig
gpu/src/android/GrGLDefaultInterface_android.cpp
gyp/common.gypi
gyp_skia
include/ports/SkHarfBuzzFont.h
include/views/SkOSWindow_wxwidgets.h
make.bat
make.py
src/opts/memset.arm.S
src/opts/memset16_neon.S
src/opts/memset32_neon.S
src/opts/opts_check_arm.cpp
src/ports/SkDebug_brew.cpp
src/ports/SkMemory_brew.cpp
src/ports/SkOSFile_brew.cpp
src/ports/SkXMLParser_empty.cpp
src/utils/ios/SkImageDecoder_iOS.mm
src/utils/ios/SkOSFile_iOS.mm
src/utils/ios/SkStream_NSData.mm
tests/FillPathTest.cpp
Review URL: http://codereview.appspot.com/4816058

git-svn-id: http://skia.googlecode.com/svn/trunk@1982 2bbb7eff-a529-9590-31e7-b0007b416f81
2011-07-28 14:26:00 +00:00

108 lines
2.7 KiB
C++

/*
* Copyright 2008 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkFlipPixelRef_DEFINED
#define SkFlipPixelRef_DEFINED
#include "SkBitmap.h"
#include "SkPageFlipper.h"
#include "SkPixelRef.h"
#include "SkThread.h"
class SkRegion;
class SkFlipPixelRef : public SkPixelRef {
public:
SkFlipPixelRef(SkBitmap::Config, int width, int height);
virtual ~SkFlipPixelRef();
bool isDirty() const { return fFlipper.isDirty(); }
const SkRegion& dirtyRgn() const { return fFlipper.dirtyRgn(); }
void inval() { fFlipper.inval(); }
void inval(const SkIRect& rect) { fFlipper.inval(rect); }
void inval(const SkRegion& rgn) { fFlipper.inval(rgn); }
void inval(const SkRect& r, bool doAA) { fFlipper.inval(r, doAA); }
const SkRegion& beginUpdate(SkBitmap* device);
void endUpdate();
private:
void getFrontBack(const void** front, void** back) const {
if (front) {
*front = fPage0;
}
if (back) {
*back = fPage1;
}
}
void swapPages();
// Helper to copy pixels from srcAddr to the dst bitmap, clipped to clip.
// srcAddr points to memory with the same config as dst.
static void CopyBitsFromAddr(const SkBitmap& dst, const SkRegion& clip,
const void* srcAddr);
// serialization
public:
virtual Factory getFactory() const { return Create; }
virtual void flatten(SkFlattenableWriteBuffer&) const;
static SkPixelRef* Create(SkFlattenableReadBuffer& buffer);
protected:
virtual void* onLockPixels(SkColorTable**);
virtual void onUnlockPixels();
SkFlipPixelRef(SkFlattenableReadBuffer&);
private:
SkMutex fMutex;
SkPageFlipper fFlipper;
void* fStorage;
void* fPage0; // points into fStorage;
void* fPage1; // points into fStorage;
size_t fSize; // size of 1 page. fStorage holds 2 pages
SkBitmap::Config fConfig;
typedef SkPixelRef INHERITED;
};
class SkAutoFlipUpdate : SkNoncopyable {
public:
SkAutoFlipUpdate(SkFlipPixelRef* ref) : fRef(ref) {
fDirty = &ref->beginUpdate(&fBitmap);
}
~SkAutoFlipUpdate() {
if (fRef) {
fRef->endUpdate();
}
}
const SkBitmap& bitmap() const { return fBitmap; }
const SkRegion& dirty() const { return *fDirty; }
// optional. This gets automatically called in the destructor (only once)
void endUpdate() {
if (fRef) {
fRef->endUpdate();
fRef = NULL;
}
}
private:
SkFlipPixelRef* fRef;
SkBitmap fBitmap;
const SkRegion* fDirty;
};
#endif