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/*
* Copyright 2013 Google Inc.
*
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
*/
#ifndef SkExample_DEFINED
#define SkExample_DEFINED
#include "SkSurface.h"
#include "SkWindow.h"
#include "SkTRegistry.h"
class GrContext;
struct GrGLInterface;
class GrRenderTarget;
class SkCanvas;
class SkExampleWindow;
class SkExample : SkNoncopyable {
public:
SkExample(SkExampleWindow* window) : fWindow(window) {}
virtual ~SkExample() {}
// Your class should override this method to do its thing.
virtual void draw(SkCanvas* canvas) = 0;
SkString getName() { return fName; };
// Use this public registry to tell the world about your sample.
typedef SkTRegistry<SkExample*(*)(SkExampleWindow*)> Registry;
protected:
SkExampleWindow* fWindow;
SkString fName;
};
class SkExampleWindow : public SkOSWindow {
public:
enum DeviceType {
kRaster_DeviceType,
kGPU_DeviceType,
};
SkExampleWindow(void* hwnd);
virtual ~SkExampleWindow() SK_OVERRIDE;
// Changes the device type of the object.
bool setUpBackend();
DeviceType getDeviceType() const { return fType; }
protected:
SkSurface* createSurface() SK_OVERRIDE {
if (kGPU_DeviceType == fType) {
SkSurfaceProps props(INHERITED::getSurfaceProps());
return SkSurface::NewRenderTargetDirect(fRenderTarget, &props);
}
static const SkImageInfo info = SkImageInfo::MakeN32Premul(
SkScalarRoundToInt(this->width()), SkScalarRoundToInt(this->height()));
return fSurface = SkSurface::NewRaster(info);
}
void draw(SkCanvas* canvas) SK_OVERRIDE;
void drawContents(SkCanvas* canvas);
void onSizeChange() SK_OVERRIDE;
private:
bool findNextMatch(); // Set example to the first one that matches FLAGS_match.
void setTitle();
void setUpRenderTarget();
bool onHandleChar(SkUnichar unichar) SK_OVERRIDE;
void tearDownBackend();
// draw contents
SkScalar fRotationAngle;
// support framework
DeviceType fType;
SkSurface* fSurface;
GrContext* fContext;
GrRenderTarget* fRenderTarget;
AttachmentInfo fAttachmentInfo;
const GrGLInterface* fInterface;
typedef SkOSWindow INHERITED;
};
#endif
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