AudioControlTest类 参考

#include <NewAudioEngineTest.h>

类 AudioControlTest 继承关系图:

AudioControlTest 的协作图:

Public 成员函数
	CREATE_FUNC (AudioControlTest)
virtual	~AudioControlTest ()
virtual bool	init () override
virtual void	update (float dt) override
virtual std::string	title () const override
Public 成员函数 继承自 AudioEngineTestDemo
	AudioEngineTestDemo ()
virtual void	onExit () override
virtual void	onBackCallback (cocos2d::Ref *sender) override
Public 成员函数 继承自 TestCase
	TestCase ()
	~TestCase ()
virtual std::string	subtitle () const
virtual Type	getTestType () const
virtual float	getDuration () const
virtual std::string	getExpectedOutput () const
virtual std::string	getActualOutput () const
virtual void	restartTestCallback (cocos2d::Ref *sender)
virtual void	nextTestCallback (cocos2d::Ref *sender)
virtual void	priorTestCallback (cocos2d::Ref *sender)
void	setTestSuite (TestSuite *testSuite)
TestSuite *	getTestSuite () const
float	getRunTime () const
void	setTestCaseName (const std::string &name)
std::string	getTestCaseName () const
const cocos2d::Label *	getSubtitleLable () const
const cocos2d::MenuItemImage *	getRestartTestItem () const
virtual void	onEnter () override

Private 属性
int	_audioID
bool	_loopEnabled
float	_volume
float	_duration
float	_timeRatio
void *	_playItem
void *	_timeSlider
bool	_updateTimeSlider
bool	_isStopped
cocos2d::Label *	_playOverLabel

额外继承的成员函数
Public 类型 继承自 TestCase
enum class	Type { ROBUSTNESS , UNIT , GRAPHICAL_STATIC , MANUAL }
Public 属性 继承自 TestCase
CC_CONSTRUCTOR_ACCESS	__pad0__: virtual bool init() override
Protected 属性 继承自 AudioEngineTestDemo
std::shared_ptr< bool >	_isDestroyed
Protected 属性 继承自 TestCase
cocos2d::MenuItemImage *	_priorTestItem
cocos2d::MenuItemImage *	_restartTestItem
cocos2d::MenuItemImage *	_nextTestItem
cocos2d::Label *	_titleLabel
cocos2d::Label *	_subtitleLabel

详细描述

在文件 NewAudioEngineTest.h 第 52 行定义.

构造及析构函数说明

~AudioControlTest()

AudioControlTest::~AudioControlTest ( )

virtual

在文件 NewAudioEngineTest.cpp 第 385 行定义.

{
}

成员函数说明

CREATE_FUNC()

AudioControlTest::CREATE_FUNC

(

AudioControlTest

)

init()

bool AudioControlTest::init ( )

overridevirtual

在文件 NewAudioEngineTest.cpp 第 219 行定义.

{
    auto ret = AudioEngineTestDemo::init();
    _audioID = AudioEngine::INVALID_AUDIO_ID;
    _loopEnabled = false;
    _volume = 1.0f;
    _duration = AudioEngine::TIME_UNKNOWN;
    _timeRatio = 0.0f;
    _updateTimeSlider = true;
    _isStopped = false;
    
    std::string fontFilePath = "fonts/arial.ttf";
    
    auto& layerSize = this->getContentSize();
    
    _playOverLabel = Label::createWithSystemFont("Play Over", "", 30);
    _playOverLabel->setPosition(Vec2(layerSize/2) + Vec2(0, 30));
    _playOverLabel->setVisible(false);
    addChild(_playOverLabel, 99999);
    
    auto playItem = TextButton::create("play", [&](TextButton* button){
        if (_audioID == AudioEngine::INVALID_AUDIO_ID) {
            _audioID = AudioEngine::play2d("background.mp3", _loopEnabled, _volume);
            
            if(_audioID != AudioEngine::INVALID_AUDIO_ID) {
                _isStopped = false;
                
                button->setEnabled(false);
                AudioEngine::setFinishCallback(_audioID, [&](int id, const std::string& filePath){
                    log("_audioID(%d), _isStopped:(%d), played over!!!", _audioID, _isStopped);
                    
                    _playOverLabel->setVisible(true);
                    
                    scheduleOnce([&](float dt){
                        _playOverLabel->setVisible(false);
                    }, 2.0f, "hide_play_over_label");
                    
                    assert(!_isStopped); // Stop audio should not trigger finished callback
                    _audioID = AudioEngine::INVALID_AUDIO_ID;
                    ((TextButton*)_playItem)->setEnabled(true);
                    
                    _timeRatio = 0.0f;
                    ((SliderEx*)_timeSlider)->setRatio(_timeRatio);
                });
            }
        }
    });
    _playItem = playItem;
    playItem->setPosition(layerSize.width * 0.3f,layerSize.height * 0.8f);
    addChild(playItem);
    
    auto stopItem = TextButton::create("stop", [&](TextButton* button){
        if (_audioID != AudioEngine::INVALID_AUDIO_ID ) {
            _isStopped = true;
            AudioEngine::stop(_audioID);
            
            _audioID = AudioEngine::INVALID_AUDIO_ID;
            ((TextButton*)_playItem)->setEnabled(true);
        }
    });
    stopItem->setPosition(layerSize.width * 0.7f,layerSize.height * 0.8f);
    addChild(stopItem);
    
    auto pauseItem = TextButton::create("pause", [&](TextButton* button){
        if (_audioID != AudioEngine::INVALID_AUDIO_ID ) {
            AudioEngine::pause(_audioID);
        }
    });
    pauseItem->setPosition(layerSize.width * 0.3f,layerSize.height * 0.7f);
    addChild(pauseItem);
    
    auto resumeItem = TextButton::create("resume", [&](TextButton* button){
        if (_audioID != AudioEngine::INVALID_AUDIO_ID ) {
            AudioEngine::resume(_audioID);
        }
    });
    resumeItem->setPosition(layerSize.width * 0.7f,layerSize.height * 0.7f);
    addChild(resumeItem);
    
    auto loopItem = TextButton::create("enable-loop", [&](TextButton* button){
        _loopEnabled = !_loopEnabled;
 
        if (_audioID != AudioEngine::INVALID_AUDIO_ID) {
            AudioEngine::setLoop(_audioID, _loopEnabled);
        }
        if (_loopEnabled){
            button->setString("disable-loop");
        }
        else {
            button->setString("enable-loop");
        }
    });
    loopItem->setPosition(layerSize.width * 0.5f, layerSize.height * 0.5f);
    addChild(loopItem);
    
    auto volumeSlider = SliderEx::create();
    volumeSlider->setPercent(100);
    volumeSlider->addEventListener([&](Ref* sender, Slider::EventType event){
        SliderEx *slider = dynamic_cast<SliderEx *>(sender);
        _volume = slider->getRatio();
        if (_audioID != AudioEngine::INVALID_AUDIO_ID ) {
            AudioEngine::setVolume(_audioID, _volume);
        }
    });
    volumeSlider->setPosition(Vec2(layerSize.width * 0.5f,layerSize.height * 0.35f));
    addChild(volumeSlider);
    
    auto timeSlider = SliderEx::create();
    timeSlider->addEventListener([&](Ref* sender, Slider::EventType event){
        SliderEx *slider = dynamic_cast<SliderEx *>(sender);
        switch(event){
            case Slider::EventType::ON_SLIDEBALL_DOWN:
                _updateTimeSlider = false;
                break;
            case Slider::EventType::ON_SLIDEBALL_UP:
                if (_audioID != AudioEngine::INVALID_AUDIO_ID && _duration != AudioEngine::TIME_UNKNOWN) {
                    float ratio = (float)slider->getPercent() / 100;
                    ratio = clampf(ratio, 0.0f, 1.0f);
                    AudioEngine::setCurrentTime(_audioID, _duration * ratio);
                }
            case Slider::EventType::ON_SLIDEBALL_CANCEL:
                _updateTimeSlider = true;
            case Slider::EventType::ON_PERCENTAGE_CHANGED:
            default:
                //ignore
                break;
        }
    });
    timeSlider->setPosition(Vec2(layerSize.width * 0.5f,layerSize.height * 0.25f));
    addChild(timeSlider);
    _timeSlider = timeSlider;
    
    auto& volumeSliderPos = volumeSlider->getPosition();
    auto& sliderSize = volumeSlider->getContentSize();
    auto volumeLabel = Label::createWithTTF("volume:  ", fontFilePath, 20);
    volumeLabel->setAnchorPoint(Vec2::ANCHOR_MIDDLE_RIGHT);
    volumeLabel->setPosition(volumeSliderPos.x - sliderSize.width / 2, volumeSliderPos.y);
    addChild(volumeLabel);
    
    auto& timeSliderPos = timeSlider->getPosition();
    auto timeLabel = Label::createWithTTF("time:  ", fontFilePath, 20);
    timeLabel->setAnchorPoint(Vec2::ANCHOR_MIDDLE_RIGHT);
    timeLabel->setPosition(timeSliderPos.x - sliderSize.width / 2, timeSliderPos.y);
    addChild(timeLabel);
    
    this->schedule(CC_CALLBACK_1(AudioControlTest::update, this), 0.1f, "update_key");
    
    return ret;
}

引用了 _audioID, _duration, _isStopped, _loopEnabled, _playItem, _playOverLabel, _timeRatio, _timeSlider, _updateTimeSlider, _volume , 以及 update().

函数调用图:

title()

std::string AudioControlTest::title ( ) const

overridevirtual

重载 AudioEngineTestDemo .

在文件 NewAudioEngineTest.cpp 第 389 行定义.

{
    return "Audio control test";
}

update()

void AudioControlTest::update ( float  dt )

overridevirtual

在文件 NewAudioEngineTest.cpp 第 369 行定义.

{
    if (_audioID != AudioEngine::INVALID_AUDIO_ID ) {
        if(_duration == AudioEngine::TIME_UNKNOWN){
            _duration = AudioEngine::getDuration(_audioID);
        }
        if(_duration != AudioEngine::TIME_UNKNOWN){
            auto time = AudioEngine::getCurrentTime(_audioID);
            _timeRatio = time / _duration;
            if(_updateTimeSlider){
                ((SliderEx*)_timeSlider)->setRatio(_timeRatio);
            }
        }
    }
}

引用了 _audioID, _duration, _timeRatio, _timeSlider , 以及 _updateTimeSlider.

被这些函数引用 init().

这是这个函数的调用关系图:

类成员变量说明

_audioID

int AudioControlTest::_audioID

private

在文件 NewAudioEngineTest.h 第 66 行定义.

被这些函数引用 init() , 以及 update().

_duration

float AudioControlTest::_duration

private

在文件 NewAudioEngineTest.h 第 69 行定义.

被这些函数引用 init() , 以及 update().

_isStopped

bool AudioControlTest::_isStopped

private

在文件 NewAudioEngineTest.h 第 75 行定义.

被这些函数引用 init().

_loopEnabled

bool AudioControlTest::_loopEnabled

private

在文件 NewAudioEngineTest.h 第 67 行定义.

被这些函数引用 init().

_playItem

void* AudioControlTest::_playItem

private

在文件 NewAudioEngineTest.h 第 72 行定义.

被这些函数引用 init().

_playOverLabel

cocos2d::Label* AudioControlTest::_playOverLabel

private

在文件 NewAudioEngineTest.h 第 76 行定义.

被这些函数引用 init().

_timeRatio

float AudioControlTest::_timeRatio

private

在文件 NewAudioEngineTest.h 第 70 行定义.

被这些函数引用 init() , 以及 update().

_timeSlider

void* AudioControlTest::_timeSlider

private

在文件 NewAudioEngineTest.h 第 73 行定义.

被这些函数引用 init() , 以及 update().

_updateTimeSlider

bool AudioControlTest::_updateTimeSlider

private

在文件 NewAudioEngineTest.h 第 74 行定义.

被这些函数引用 init() , 以及 update().

_volume

float AudioControlTest::_volume

private

在文件 NewAudioEngineTest.h 第 68 行定义.

被这些函数引用 init().

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该类的文档由以下文件生成:

• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/NewAudioEngineTest/NewAudioEngineTest.h
• /Users/yujizhu/Documents/Git/cocos2d-x-4.0/tests/cpp-tests/Classes/NewAudioEngineTest/NewAudioEngineTest.cpp