/*
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* Copyright 2018 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 BisectSlide_DEFINED
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#define BisectSlide_DEFINED
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#include "SkCanvas.h"
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#include "SkPath.h"
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#include "Slide.h"
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#include <stack>
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/**
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* This is a simple utility designed to extract the paths from an SKP file and then isolate a single
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* one of them via bisect. Use the 'x' and 'X' keys to guide a binary search:
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*
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* 'x': Throw out half the paths.
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* 'X': Toggle which half gets tossed and which half is kept.
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* 'Z': Back up one level.
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* 'D': Dump the path.
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*/
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class BisectSlide : public Slide, public SkCanvas {
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public:
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static sk_sp<BisectSlide> Create(const char filepath[]);
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// Slide overrides.
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SkISize getDimensions() const override { return fDrawBounds.size(); }
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bool onChar(SkUnichar c) override;
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void draw(SkCanvas* canvas) override;
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private:
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BisectSlide(const char filepath[]);
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// SkCanvas override called only during creation.
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void onDrawPath(const SkPath& path, const SkPaint& paint) override;
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struct FoundPath {
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SkPath fPath;
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SkPaint fPaint;
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SkMatrix fViewMatrix;
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};
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SkString fFilePath;
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SkIRect fDrawBounds = SkIRect::MakeEmpty();
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SkTArray<FoundPath> fFoundPaths;
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SkTArray<FoundPath> fTossedPaths;
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SkTArray<char> fTrail;
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std::stack<std::pair<SkTArray<FoundPath>, SkTArray<FoundPath>>> fPathHistory;
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};
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#endif
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