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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkAndroidCodec.h"
#include "SkAnimatedImage.h"
#include "SkAnimTimer.h"
#include "SkCanvas.h"
#include "SkPaint.h"
#include "SkPictureRecorder.h"
#include "SkRect.h"
#include "SkScalar.h"
#include "SkString.h"
#include "SampleCode.h"
#include "Resources.h"
static constexpr char kPauseKey = 'p';
static constexpr char kResetKey = 'r';
class SampleAnimatedImage : public SampleView {
public:
SampleAnimatedImage()
: INHERITED()
, fYOffset(0)
{}
protected:
void onDrawBackground(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
constexpr SkScalar kTextSize = 20;
paint.setTextSize(kTextSize);
SkString str = SkStringPrintf("Press '%c' to start/pause; '%c' to reset.",
kPauseKey, kResetKey);
const char* text = str.c_str();
SkRect bounds;
paint.measureText(text, strlen(text), &bounds);
fYOffset = bounds.height();
canvas->drawText(text, strlen(text), 5, fYOffset, paint);
fYOffset *= 2;
}
void onDrawContent(SkCanvas* canvas) override {
if (!fImage) {
return;
}
canvas->translate(0, fYOffset);
canvas->drawDrawable(fImage.get());
canvas->drawDrawable(fDrawable.get(), fImage->getBounds().width(), 0);
}
bool onAnimate(const SkAnimTimer& animTimer) override {
if (!fImage) {
return false;
}
fImage->update(animTimer.msec());
return true;
}
void onOnceBeforeDraw() override {
sk_sp<SkData> file(GetResourceAsData("images/alphabetAnim.gif"));
std::unique_ptr<SkCodec> codec(SkCodec::MakeFromData(file));
if (!codec) {
return;
}
fImage = SkAnimatedImage::Make(SkAndroidCodec::MakeFromCodec(std::move(codec)));
if (!fImage) {
return;
}
SkPictureRecorder recorder;
auto canvas = recorder.beginRecording(fImage->getBounds());
canvas->drawDrawable(fImage.get());
fDrawable = recorder.finishRecordingAsDrawable();
}
bool onQuery(SkEvent* evt) override {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "AnimatedImage");
return true;
}
SkUnichar uni;
if (fImage && SampleCode::CharQ(*evt, &uni)) {
switch (uni) {
case kPauseKey:
if (fImage->isRunning()) {
fImage->stop();
} else {
fImage->start();
}
return true;
case kResetKey:
fImage->reset();
return true;
default:
break;
}
}
return this->INHERITED::onQuery(evt);
}
private:
sk_sp<SkAnimatedImage> fImage;
sk_sp<SkDrawable> fDrawable;
SkScalar fYOffset;
typedef SampleView INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() {
return new SampleAnimatedImage;
}
static SkViewRegister reg(MyFactory);
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