ec3ed6a5eb
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
64 lines
2.0 KiB
C++
64 lines
2.0 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 SkPageFlipper_DEFINED
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#define SkPageFlipper_DEFINED
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#include "SkRegion.h"
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/** SkPageFlipper manages alternating inval/dirty regions for a rectangular area
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(like a bitmap). You call inval() to accumulate inval areas, and then when
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you're ready to "flip" pages (i.e. draw into the one you've been
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invalidating) you call update, which swaps the inval regions, and returns
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two things to you: 1) the final inval region to be drawn into, and 2) the
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region of pixels that should be copied from the "front" page onto the one
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you're about to draw into. This copyBits region will be disjoint from the
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inval region, so both need to be handled.
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*/
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class SkPageFlipper {
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public:
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SkPageFlipper();
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SkPageFlipper(int width, int height);
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int width() const { return fWidth; }
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int height() const { return fHeight; }
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void resize(int width, int height);
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bool isDirty() const { return !fDirty1->isEmpty(); }
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const SkRegion& dirtyRgn() const { return *fDirty1; }
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void inval();
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void inval(const SkIRect&);
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void inval(const SkRegion&);
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void inval(const SkRect&, bool antialias);
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/** When you're ready to write to the back page, call update. The returned
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region is the invalidate are that needs to be drawn to. The copyBits
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region (provided by the caller) is the area that should be copied from
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the front page to the back page (will not intersect with the returned
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inval region.
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Once this is called, the two internal regions are swapped, so the *new*
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back inval region is ready to receive new inval calls.
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*/
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const SkRegion& update(SkRegion* copyBits);
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private:
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SkRegion* fDirty0;
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SkRegion* fDirty1;
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SkRegion fDirty0Storage;
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SkRegion fDirty1Storage;
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int fWidth;
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int fHeight;
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};
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#endif
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