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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 "sk_app/Application.h"
#include "sk_app/CommandSet.h"
#include "sk_app/Window.h"
#include "gm.h"
#include "SkAnimTimer.h"
#include "SkTouchGesture.h"
#include "Slide.h"
class SkCanvas;
class Viewer : public sk_app::Application {
public:
Viewer(int argc, char** argv, void* platformData);
~Viewer() override;
void onBackendCreated();
void onPaint(SkCanvas* canvas);
void onIdle() override;
bool onTouch(intptr_t owner, sk_app::Window::InputState state, float x, float y);
void onUIStateChanged(const SkString& stateName, const SkString& stateValue);
bool onKey(sk_app::Window::Key key, sk_app::Window::InputState state, uint32_t modifiers);
bool onChar(SkUnichar c, uint32_t modifiers);
private:
enum class ColorMode {
kLegacy, // N32, no color management
kColorManagedSRGB8888_NonLinearBlending, // N32, sRGB transfer function, nonlinear blending
kColorManagedSRGB8888, // N32, sRGB transfer function, linear blending
kColorManagedLinearF16, // F16, linear transfer function, linear blending
};
void initSlides();
void updateTitle();
void setBackend(sk_app::Window::BackendType);
void setColorMode(ColorMode);
void setStartupSlide();
void setupCurrentSlide(int previousSlide);
void listNames();
void updateUIState();
void drawSlide(SkCanvas* canvs);
void drawStats(SkCanvas* canvas);
void drawImGui(SkCanvas* canvas);
void changeZoomLevel(float delta);
SkMatrix computeMatrix();
sk_app::Window* fWindow;
static const int kMeasurementCount = 64; // should be power of 2 for fast mod
double fPaintTimes[kMeasurementCount];
double fFlushTimes[kMeasurementCount];
double fAnimateTimes[kMeasurementCount];
int fCurrentMeasurement;
SkAnimTimer fAnimTimer;
SkTArray<sk_sp<Slide>> fSlides;
int fCurrentSlide;
bool fDisplayStats;
bool fRefresh; // whether to continuously refresh for measuring render time
SkPaint fImGuiFontPaint;
SkPaint fImGuiGamutPaint;
bool fShowImGuiDebugWindow;
bool fShowImGuiTestWindow;
bool fShowZoomWindow;
sk_sp<SkImage> fLastImage;
sk_app::Window::BackendType fBackendType;
// Color properties for slide rendering
ColorMode fColorMode;
SkColorSpacePrimaries fColorSpacePrimaries;
// transform data
SkScalar fZoomCenterX;
SkScalar fZoomCenterY;
SkScalar fZoomLevel;
SkScalar fZoomScale;
sk_app::CommandSet fCommands;
SkTouchGesture fGesture;
// identity unless the window initially scales the content to fit the screen.
SkMatrix fDefaultMatrix;
SkMatrix fDefaultMatrixInv;
SkTArray<std::function<void(void)>> fDeferredActions;
Json::Value fAllSlideNames; // cache all slide names for fast updateUIState
};
#endif
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