96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
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/*
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* Copyright 2020 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkCanvas.h"
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#include "include/core/SkData.h"
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#include "include/ports/SkAudioPlayer.h"
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#include "samplecode/Sample.h"
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#include "src/core/SkUtils.h"
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#include "tools/Resources.h"
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class AudioView : public Sample {
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std::unique_ptr<SkAudioPlayer> fPlayer;
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SkRect fBar;
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public:
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AudioView() {}
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protected:
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SkString name() override { return SkString("Audio"); }
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void onOnceBeforeDraw() override {
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auto data = SkData::MakeFromFileName("/Users/reed/skia/mp3/scott-joplin-peacherine-rag.mp3");
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if (data) {
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fPlayer = SkAudioPlayer::Make(data);
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SkDebugf("make: dur:%g time%g state:%d",
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fPlayer->duration(),
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fPlayer->time(),
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fPlayer->state());
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}
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fBar = { 10, 10, 510, 30 };
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}
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void onDrawContent(SkCanvas* canvas) override {
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if (!fPlayer) {
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return;
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}
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SkPaint p;
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p.setColor(0xFFCCCCCC);
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canvas->drawRect(fBar, p);
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p.setColor(fPlayer->isPlaying() ? SK_ColorBLUE : 0xFF8888FF);
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SkRect r = fBar;
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r.fRight = r.fLeft + (float)fPlayer->normalizedTime() * r.width();
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canvas->drawRect(r, p);
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}
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bool onChar(SkUnichar c) override {
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if (c == ' ') {
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switch (fPlayer->state()) {
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case SkAudioPlayer::State::kPlaying: fPlayer->pause(); break;
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case SkAudioPlayer::State::kPaused: fPlayer->play(); break;
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case SkAudioPlayer::State::kStopped: fPlayer->play(); break;
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}
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return true;
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}
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return this->INHERITED::onChar(c);
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}
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Click* onFindClickHandler(SkScalar x, SkScalar y, skui::ModifierKey) override {
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if (fPlayer && fBar.contains(x, y)) {
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bool wasPlaying = fPlayer->isPlaying();
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if (wasPlaying) {
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fPlayer->pause();
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}
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return new Click([this, wasPlaying](Click* click) {
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if (fBar.contains(click->fCurr.fX, click->fCurr.fY)) {
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fPlayer->setNormalizedTime((click->fCurr.fX - fBar.fLeft) / fBar.width());
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}
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if (click->fState == skui::InputState::kUp) {
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if (wasPlaying) {
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fPlayer->play();
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}
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}
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return true;
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});
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}
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return nullptr;
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}
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bool onAnimate(double /*nanos*/) override {
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return true;
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}
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private:
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typedef Sample INHERITED;
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};
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DEF_SAMPLE( return new AudioView; )
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