skia2/samplecode/SampleGM.cpp

113 lines
2.3 KiB
C++

#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "gm.h"
using namespace skiagm;
// need to explicitly declare this, or we get some weird infinite loop llist
template GMRegistry* GMRegistry::gHead;
class Iter {
public:
Iter() {
fReg = GMRegistry::Head();
}
void reset() {
fReg = GMRegistry::Head();
}
GM* next() {
if (fReg) {
GMRegistry::Factory fact = fReg->factory();
fReg = fReg->next();
return fact(0);
}
return NULL;
}
static int Count() {
const GMRegistry* reg = GMRegistry::Head();
int count = 0;
while (reg) {
count += 1;
reg = reg->next();
}
return count;
}
private:
const GMRegistry* fReg;
};
///////////////////////////////////////////////////////////////////////////////
class GMView : public SkView {
Iter fIter;
GM* fGM;
public:
GMView() {
fGM = fIter.next();
this->postNextGM();
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "GM");
return true;
}
return this->INHERITED::onQuery(evt);
}
virtual bool onEvent(const SkEvent& evt) {
if (evt.isType("next-gm")) {
delete fGM;
if (!(fGM = fIter.next())) {
fIter.reset();
fGM = fIter.next();
}
this->inval(NULL);
this->postNextGM();
return true;
}
return this->INHERITED::onEvent(evt);
}
void drawBG(SkCanvas* canvas) {
canvas->drawColor(0xFFDDDDDD);
}
virtual void onDraw(SkCanvas* canvas) {
fGM->draw(canvas);
}
private:
void postNextGM() {
(new SkEvent("next-gm"))->post(this->getSinkID(), 1500);
}
typedef SkView INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new GMView; }
static SkViewRegister reg(MyFactory);
///////////////////////////////////////////////////////////////////////////////
using namespace skiagm;
GM::GM() {}
GM::~GM() {}
void GM::draw(SkCanvas* canvas) {
this->onDraw(canvas);
}