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/*
* Copyright 2011 Skia
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SampleWindow_DEFINED
#define SampleWindow_DEFINED
#include "SkWindow.h"
#include "SampleCode.h"
#include "SkPath.h"
#include "SkScalar.h"
#include "SkTDArray.h"
#include "SkTouchGesture.h"
#include "SkWindow.h"
#include "SkOSMenu.h"
class GrContext;
class GrRenderTarget;
class SkEvent;
class SkCanvas;
class SkPicture;
class SkTypeface;
class SkData;
class SampleWindow : public SkOSWindow {
SkTDArray<const SkViewFactory*> fSamples;
public:
enum DeviceType {
kRaster_DeviceType,
kPicture_DeviceType,
kGPU_DeviceType,
kNullGPU_DeviceType
};
/**
* SampleApp ports can subclass this manager class if they want to:
* * filter the types of devices supported
* * customize plugging of SkDevice objects into an SkCanvas
* * customize publishing the results of draw to the OS window
* * manage GrContext / GrRenderTarget lifetimes
*/
class DeviceManager : public SkRefCnt {
public:
// called at end of SampleWindow cons
virtual void init(SampleWindow* win) = 0;
// called when selecting a new device type
// can disallow a device type by returning false.
virtual bool supportsDeviceType(DeviceType dType) = 0;
// called before drawing. should install correct device
// type on the canvas. Will skip drawing if returns false.
virtual bool prepareCanvas(DeviceType dType,
SkCanvas* canvas,
SampleWindow* win) = 0;
// called after drawing, should get the results onto the
// screen.
virtual void publishCanvas(DeviceType dType,
SkCanvas* canvas,
SampleWindow* win) = 0;
// called when window changes size, guaranteed to be called
// at least once before first draw (after init)
virtual void windowSizeChanged(SampleWindow* win) = 0;
// return the GrContext backing gpu devices
virtual GrContext* getGrContext(DeviceType dType) = 0;
};
SampleWindow(void* hwnd, int argc, char** argv, DeviceManager*);
virtual ~SampleWindow();
virtual void draw(SkCanvas* canvas);
void setDeviceType(DeviceType type);
void toggleRendering();
void toggleSlideshow();
void toggleFPS();
void showOverview();
GrContext* getGrContext() const { return fDevManager->getGrContext(fDeviceType); }
void setZoomCenter(float x, float y);
void changeZoomLevel(float delta);
bool nextSample();
bool previousSample();
bool goToSample(int i);
SkString getSampleTitle(int i);
int sampleCount();
bool handleTouch(int ownerId, float x, float y,
SkView::Click::State state);
void saveToPdf();
SkData* getPDFData() { return fPDFData; }
void postInvalDelay();
protected:
virtual void onDraw(SkCanvas* canvas);
virtual bool onHandleKey(SkKey key);
virtual bool onHandleChar(SkUnichar);
virtual void onSizeChange();
virtual SkCanvas* beforeChildren(SkCanvas*);
virtual void afterChildren(SkCanvas*);
virtual void beforeChild(SkView* child, SkCanvas* canvas);
virtual void afterChild(SkView* child, SkCanvas* canvas);
virtual bool onEvent(const SkEvent& evt);
virtual bool onQuery(SkEvent* evt);
virtual bool onDispatchClick(int x, int y, Click::State, void* owner);
virtual bool onClick(Click* click);
virtual Click* onFindClickHandler(SkScalar x, SkScalar y);
private:
class DefaultDeviceManager;
int fCurrIndex;
SkPicture* fPicture;
SkPath fClipPath;
SkTouchGesture fGesture;
SkScalar fZoomLevel;
SkScalar fZoomScale;
DeviceType fDeviceType;
DeviceManager* fDevManager;
bool fSaveToPdf;
SkCanvas* fPdfCanvas;
SkData* fPDFData;
bool fUseClip;
bool fNClip;
bool fAnimating;
bool fRotate;
bool fPerspAnim;
SkScalar fPerspAnimTime;
bool fScale;
bool fRequestGrabImage;
bool fMeasureFPS;
SkMSec fMeasureFPS_Time;
bool fMagnify;
bool fUsePipe;
int fUsePipeMenuItemID;
bool fDebugger;
// The following are for the 'fatbits' drawing
// Latest position of the mouse.
int fMouseX, fMouseY;
int fFatBitsScale;
// Used by the text showing position and color values.
SkTypeface* fTypeface;
bool fShowZoomer;
SkOSMenu::TriState fLCDState;
SkOSMenu::TriState fAAState;
SkOSMenu::TriState fFilterState;
SkOSMenu::TriState fHintingState;
unsigned fFlipAxis;
int fScrollTestX, fScrollTestY;
SkScalar fZoomCenterX, fZoomCenterY;
//Stores global settings
SkOSMenu fAppMenu;
//Stores slide specific settings
SkOSMenu fSlideMenu;
int fTransitionNext;
int fTransitionPrev;
void loadView(SkView*);
void updateTitle();
bool zoomIn();
bool zoomOut();
void updatePointer(int x, int y);
void magnify(SkCanvas* canvas);
void showZoomer(SkCanvas* canvas);
void updateMatrix();
void postAnimatingEvent();
void installDrawFilter(SkCanvas*);
int findByTitle(const char*);
typedef SkOSWindow INHERITED;
};
#endif
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