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/*
* Copyright 2017 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 "SkSGColor.h"
#include "SkSGDraw.h"
#include "SkSGGroup.h"
#include "SkSGInvalidationController.h"
#include "SkSGRect.h"
#include "SkSGTransform.h"
#include "SkAnimTimer.h"
#include <cmath>
class SGInvalView final : public SampleView {
public:
SGInvalView() {}
protected:
void onOnceBeforeDraw() override {
fRect1 = sksg::Rect::Make(SkRect::MakeLTRB(100, 100, 100, 100));
fRect2 = sksg::Rect::Make(SkRect::MakeLTRB(300, 200, 300, 200));
fColor1 = sksg::Color::Make(0);
fColor2 = sksg::Color::Make(0);
fRoot = sksg::Group::Make();
fRoot->addChild(sksg::Draw::Make(fRect1, fColor1));
fRoot->addChild(sksg::Transform::Make(sksg::Draw::Make(fRect2, fColor2),
SkMatrix::MakeScale(1.5f, 1.5f)));
}
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "SGInval");
return true;
}
return this->INHERITED::onQuery(evt);
}
void onDrawContent(SkCanvas* canvas) override {
sksg::InvalidationController ic;
fRoot->revalidate(&ic, SkMatrix::I());
// TODO: clip/cull
fRoot->render(canvas);
SkPaint p;
p.setColor(0xffff0000);
p.setStyle(SkPaint::kStroke_Style);
p.setAntiAlias(true);
p.setStrokeWidth(0);
for (const auto& r : ic) {
canvas->drawRect(r, p);
}
}
bool onAnimate(const SkAnimTimer& timer) override {
if (!fRoot) {
return true;
}
static constexpr SkScalar kSize = 50;
static constexpr SkScalar kRate = 1.0f / 500;
const auto t = timer.msec() * kRate;
fRect1->setR(fRect1->getL() + kSize * (1 + std::sin(t)));
fRect1->setB(fRect1->getT() + kSize * (1 + std::cos(t)));
fRect2->setR(fRect2->getL() + kSize * (1 + std::cos(SK_ScalarPI / 2 + t)));
fRect2->setB(fRect2->getT() + kSize * (1 + std::sin(SK_ScalarPI / 2 + t)));
fColor1->setColor(SkColorSetARGB(128 * (1 + std::sin(t)), 0, 0x80, 0));
fColor2->setColor(SkColorSetARGB(128 * (1 + std::cos(t)), 0, 0, 0x80));
return true;
}
private:
typedef SampleView INHERITED;
sk_sp<sksg::Rect> fRect1,
fRect2;
sk_sp<sksg::Color> fColor1,
fColor2;
sk_sp<sksg::Group> fRoot;
};
static SkView* SGInvalFactory() { return new SGInvalView; }
static SkViewRegister reg(SGInvalFactory);
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