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/*
* Copyright 2011 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 "SkView.h"
namespace {
const int N = 8;
const SkScalar kWidth = SkIntToScalar(640);
const SkScalar kHeight = SkIntToScalar(480);
const char gIsOverview[] = "is-overview";
} // namespace
class OverView : public SkView {
public:
OverView(int count, const SkViewFactory* factories[]);
virtual ~OverView();
protected:
// Overridden from SkEventSink:
virtual bool onEvent(const SkEvent&) SK_OVERRIDE;
virtual bool onQuery(SkEvent* evt) SK_OVERRIDE {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Overview");
return true;
}
if (evt->isType(gIsOverview)) {
return true;
}
return this->INHERITED::onQuery(evt);
}
// Overridden from SkView:
virtual void onSizeChange() SK_OVERRIDE;
virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
canvas->drawColor(SK_ColorLTGRAY);
}
virtual SkCanvas* beforeChildren(SkCanvas*) SK_OVERRIDE;
virtual bool onSendClickToChildren(SkScalar x, SkScalar y) SK_OVERRIDE {
return false;
}
virtual Click* onFindClickHandler(SkScalar x, SkScalar y) SK_OVERRIDE {
int ix = (int)(SkScalarDiv(x * N, kWidth));
int iy = (int)(SkScalarDiv(y * N, kHeight));
if (ix >= 0 && iy >= 0) {
SkEvent evt("set-curr-index");
evt.setFast32(iy * N + ix);
this->sendEventToParents(evt);
}
return NULL;
}
private:
int fCount;
const SkViewFactory** fFactories;
typedef SkView INHERITED;
};
// FIXME: this should be in a header
SkView* create_overview(int count, const SkViewFactory* factories[]);
SkView* create_overview(int count, const SkViewFactory* factories[]) {
return SkNEW_ARGS(OverView, (count, factories));
}
// FIXME: this should be in a header
bool is_overview(SkView* view);
bool is_overview(SkView* view) {
SkEvent isOverview(gIsOverview);
return view->doQuery(&isOverview);
}
OverView::OverView(int count, const SkViewFactory* factories[]) {
fCount = count;
fFactories = factories;
}
OverView::~OverView() {
}
bool OverView::onEvent(const SkEvent& evt) {
return this->INHERITED::onEvent(evt);
}
void OverView::onSizeChange() {
this->detachAllChildren();
SkScalar locX = 0;
SkScalar locY = 0;
for (int i = 0; i < fCount; i++) {
SkView* view = (*fFactories[i])();
view->setVisibleP(true);
this->attachChildToBack(view)->unref();
view->setLoc(locX, locY);
view->setSize(kWidth, kHeight);
locX += kWidth;
if ((i % N) == N - 1) {
locY += kHeight;
locX = 0;
}
}
}
SkCanvas* OverView::beforeChildren(SkCanvas* canvas) {
canvas->scale(SK_Scalar1 / N, SK_Scalar1 / N);
return canvas;
}
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