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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 SampleApp_DEFINED
#define SampleApp_DEFINED
#include "SkOSMenu.h"
#include "SkPath.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkScalar.h"
#include "SkTDArray.h"
#include "SkTouchGesture.h"
#include "SkWindow.h"
class GrContext;
class GrRenderTarget;
class SkCanvas;
class SkData;
class SkDocument;
class SkEvent;
class SkTypeface;
class SkViewFactory;
class SampleWindow : public SkOSWindow {
SkTDArray<const SkViewFactory*> fSamples;
enum DeviceType {
#endif // SK_ANGLE
#endif // SK_SUPPORT_GPU
static bool IsGpuDeviceType(DeviceType devType) {
switch (devType) {
case kGPU_DeviceType:
case kANGLE_DeviceType:
#endif // SK_ANGLE
case kNullGPU_DeviceType:
return true;
return false;
#endif // SK_SUPPORT_GPU
return false;
* SampleApp ports can subclass this manager class if they want to:
* * filter the types of devices supported
* * customize plugging of SkBaseDevice objects into an SkCanvas
* * customize publishing the results of draw to the OS window
* * manage GrContext / GrRenderTarget lifetimes
class DeviceManager : public SkRefCnt {
virtual void setUpBackend(SampleWindow* win, int msaaSampleCount) = 0;
virtual void tearDownBackend(SampleWindow* win) = 0;
// called before drawing. should install correct device
// type on the canvas. Will skip drawing if returns false.
virtual SkSurface* createSurface(DeviceType dType, 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 (NULL if not built with GPU support)
virtual GrContext* getGrContext() = 0;
// return the GrRenderTarget backing gpu devices (NULL if not built with GPU support)
virtual GrRenderTarget* getGrRenderTarget() = 0;
typedef SkRefCnt INHERITED;
SampleWindow(void* hwnd, int argc, char** argv, DeviceManager*);
virtual ~SampleWindow();
virtual SkSurface* createSurface() SK_OVERRIDE {
SkSurface* surface = NULL;
if (fDevManager) {
surface = fDevManager->createSurface(fDeviceType, this);
if (NULL == surface) {
surface = this->INHERITED::createSurface();
return surface;
virtual void draw(SkCanvas*) SK_OVERRIDE;
void setDeviceType(DeviceType type);
void toggleRendering();
void toggleSlideshow();
void toggleFPS();
void showOverview();
void toggleDistanceFieldFonts();
GrContext* getGrContext() const { return fDevManager->getGrContext(); }
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();
void postInvalDelay();
DeviceType getDeviceType() const { return fDeviceType; }
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE;
virtual bool onHandleKey(SkKey key) SK_OVERRIDE;
virtual bool onHandleChar(SkUnichar) SK_OVERRIDE;
virtual void onSizeChange() SK_OVERRIDE;
virtual SkCanvas* beforeChildren(SkCanvas*) SK_OVERRIDE;
virtual void afterChildren(SkCanvas*) SK_OVERRIDE;
virtual void beforeChild(SkView* child, SkCanvas* canvas) SK_OVERRIDE;
virtual void afterChild(SkView* child, SkCanvas* canvas) SK_OVERRIDE;
virtual bool onEvent(const SkEvent& evt) SK_OVERRIDE;
virtual bool onQuery(SkEvent* evt) SK_OVERRIDE;
virtual bool onDispatchClick(int x, int y, Click::State, void* owner,
unsigned modi) SK_OVERRIDE;
virtual bool onClick(Click* click) SK_OVERRIDE;
virtual Click* onFindClickHandler(SkScalar x, SkScalar y,
unsigned modi) SK_OVERRIDE;
class DefaultDeviceManager;
int fCurrIndex;
SkPictureRecorder fRecorder;
SkPath fClipPath;
SkTouchGesture fGesture;
SkScalar fZoomLevel;
SkScalar fZoomScale;
DeviceType fDeviceType;
DeviceManager* fDevManager;
bool fSaveToPdf;
SkAutoTUnref<SkDocument> fPDFDocument;
bool fUseClip;
bool fNClip;
bool fAnimating;
bool fRotate;
SkScalar fRotateAnimTime;
bool fPerspAnim;
SkScalar fPerspAnimTime;
bool fRequestGrabImage;
bool fMeasureFPS;
SkMSec fMeasureFPS_Time;
SkMSec fMeasureFPS_StartTime;
bool fMagnify;
int fTilingMode;
SkOSMenu::TriState fPipeState; // Mixed uses a tiled pipe
// On uses a normal pipe
// Off uses no pipe
int fUsePipeMenuItemID;
// 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 fSubpixelState;
int fHintingState;
int fFilterLevelIndex;
unsigned fFlipAxis;
int fMSAASampleCount;
int fScrollTestX, fScrollTestY;
SkScalar fZoomCenterX, fZoomCenterY;
//Stores global settings
SkOSMenu* fAppMenu; // We pass ownership to SkWindow, when we call addMenu
//Stores slide specific settings
SkOSMenu* fSlideMenu; // We pass ownership to SkWindow, when we call addMenu
int fTransitionNext;
int fTransitionPrev;
void loadView(SkView*);
void updateTitle();
bool getRawTitle(SkString*);
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*);
void listTitles();
SkSize tileSize() const;
typedef SkOSWindow INHERITED;