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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.
*/
#include "SampleCode.h"
#include "SkCanvas.h"
#include "SkString.h"
#if SK_SUPPORT_GPU
# include "GrContext.h"
#else
class GrContext;
#endif
//////////////////////////////////////////////////////////////////////////////
bool SampleCode::CharQ(const SkEvent& evt, SkUnichar* outUni) {
if (evt.isType(gCharEvtName)) {
if (outUni) {
*outUni = evt.getFast32();
}
return true;
}
return false;
}
bool SampleCode::TitleQ(const SkEvent& evt) {
return evt.isType(gTitleEvtName);
}
void SampleCode::TitleR(SkEvent* evt, const char title[]) {
SkASSERT(evt && TitleQ(*evt));
evt->setString(gTitleEvtName, title);
}
bool SampleCode::RequestTitle(SkView* view, SkString* title) {
SkEvent evt(gTitleEvtName);
if (view->doQuery(&evt)) {
title->set(evt.findString(gTitleEvtName));
return true;
}
return false;
}
SkViewRegister* SkViewRegister::gHead;
SkViewRegister::SkViewRegister(SkViewFactory* fact) : fFact(fact) {
fFact->ref();
fChain = gHead;
gHead = this;
}
///////////////////////////////////////////////////////////////////////////////
SkFuncViewFactory::SkFuncViewFactory(SkViewCreateFunc func)
: fCreateFunc(func) {
}
SkView* SkFuncViewFactory::operator() () const {
return (*fCreateFunc)();
}
SkViewRegister::SkViewRegister(SkViewCreateFunc func) {
fFact = new SkFuncViewFactory(func);
fChain = gHead;
gHead = this;
}
///////////////////////////////////////////////////////////////////////////////
static const char is_sample_view_tag[] = "sample-is-sample-view";
bool SampleView::IsSampleView(SkView* view) {
SkEvent evt(is_sample_view_tag);
return view->doQuery(&evt);
}
bool SampleView::onQuery(SkEvent* evt) {
if (evt->isType(is_sample_view_tag)) {
return true;
}
return this->INHERITED::onQuery(evt);
}
void SampleView::onDraw(SkCanvas* canvas) {
if (!fHaveCalledOnceBeforeDraw) {
fHaveCalledOnceBeforeDraw = true;
this->onOnceBeforeDraw();
}
this->onDrawBackground(canvas);
SkAutoCanvasRestore acr(canvas, true);
this->onDrawContent(canvas);
#if SK_SUPPORT_GPU
// Ensure the GrContext doesn't combine GrDrawOps across draw loops.
if (GrContext* context = canvas->getGrContext()) {
context->flush();
}
#endif
}
void SampleView::onDrawBackground(SkCanvas* canvas) {
canvas->drawColor(fBGColor);
}
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