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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef Viewer_DEFINED
#define Viewer_DEFINED
#include "../Application.h"
#include "../Window.h"
#include "gm.h"
#include "SkAnimTimer.h"
#include "Slide.h"
class SkCanvas;
class Viewer : public sk_app::Application {
public:
Viewer(int argc, char** argv, void* platformData);
~Viewer() override;
bool onKey(sk_app::Window::Key key, sk_app::Window::InputState state, uint32_t modifiers);
bool onChar(SkUnichar, uint32_t modifiers);
void onPaint(SkCanvas* canvas);
void onIdle(double ms) override;
private:
void initSlides();
void setupCurrentSlide(int previousSlide);
void drawStats(SkCanvas* canvas);
void changeZoomLevel(float delta);
void updateMatrix();
sk_app::Window* fWindow;
static const int kMeasurementCount = 64; // should be power of 2 for fast mod
double fMeasurements[kMeasurementCount];
int fCurrentMeasurement;
SkAnimTimer fAnimTimer;
SkTArray<sk_sp<Slide>> fSlides;
int fCurrentSlide;
bool fDisplayStats;
// transform data
SkMatrix fLocalMatrix;
SkScalar fZoomCenterX;
SkScalar fZoomCenterY;
SkScalar fZoomLevel;
SkScalar fZoomScale;
};
#endif
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