732bd66ac2
BUG=skia:2378 R=reed@google.com, danakj@chromium.org, enne@chromium.org, mtklein@google.com, robertphillips@google.com Author: mtklein@chromium.org Review URL: https://codereview.chromium.org/248033002 git-svn-id: http://skia.googlecode.com/svn/trunk@14351 2bbb7eff-a529-9590-31e7-b0007b416f81
76 lines
2.0 KiB
C++
76 lines
2.0 KiB
C++
/*
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* Copyright 2014 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 SkRecording_DEFINED
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#define SkRecording_DEFINED
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#include "SkCanvas.h" // SkCanvas
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#include "SkRefCnt.h" // SkAutoTUnref
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#include "SkTemplates.h" // SkAutoTDelete
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#include "SkTypes.h" // SkNoncopyable
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// These are intentionally left opaque.
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class SkRecord;
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class SkRecorder;
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namespace EXPERIMENTAL {
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/** Easy mode interface to SkRecord-based SkCanvas recording.
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*
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* scoped_ptr<SkRecording> recording(new SkRecording(1920, 1080));
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* skia::RefPtr<SkCanvas> canvas(skia::SharePtr(recording->canvas()));
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*
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* canvas->drawThis();
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* canvas->clipThat();
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* ...
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*
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* canvas.clear(); // You must deref the canvas before you may call releasePlayback().
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* scoped_ptr<const SkPlayback> playback(recording->releasePlayback());
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* playback->draw(&someCanvas);
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* playback->draw(&someOtherCanvas);
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*
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* SkPlayback is thread safe; SkRecording is not.
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*/
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class SkPlayback : SkNoncopyable {
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public:
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// Remember, if you've got an SkPlayback*, you probably own it. Don't forget to delete it!
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~SkPlayback();
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// Draw recorded commands into a canvas.
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void draw(SkCanvas*) const;
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private:
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explicit SkPlayback(const SkRecord*);
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SkAutoTDelete<const SkRecord> fRecord;
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friend class SkRecording;
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};
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class SkRecording : SkNoncopyable {
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public:
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SkRecording(int width, int height);
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~SkRecording();
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// Draws issued to this canvas will be replayed by SkPlayback::draw().
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// Any refs held on canvas() must be dropped before you may call releasePlayback().
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SkCanvas* canvas();
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// Release exclusive ownership of an SkPlayback to the caller.
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// Any refs held on canvas() must be dropped before you may call releasePlayback().
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SkPlayback* releasePlayback();
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private:
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SkAutoTDelete<SkRecord> fRecord;
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SkAutoTUnref<SkRecorder> fRecorder;
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};
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} // namespace EXPERIMENTAL
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#endif//SkRecording_DEFINED
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