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