RedCore/cocos2d/cocos/ui/UISlider.cpp

/****************************************************************************
Copyright (c) 2013-2017 Chukong Technologies Inc.

http://www.cocos2d-x.org

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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THE SOFTWARE.
****************************************************************************/

#include "ui/UISlider.h"
#include "ui/UIScale9Sprite.h"
#include "ui/UIHelper.h"
#include "2d/CCSprite.h"
#include "2d/CCCamera.h"
#include "editor-support/cocostudio/CocosStudioExtension.h"

NS_CC_BEGIN

/* FIXME:
 Code could be simplified by using Sprite's setContentSize feature.
 Instead of scaling the sprite, set call setContentSize both in scale9 and non-scale9 modes
 */

namespace ui {
    
static const int BASEBAR_RENDERER_Z = (-2);
static const int PROGRESSBAR_RENDERER_Z = (-2);
static const int SLIDBALL_RENDERER_Z = (-1);
    
IMPLEMENT_CLASS_GUI_INFO(Slider)

Slider::Slider():
_barRenderer(nullptr),
_progressBarRenderer(nullptr),
_barTextureSize(Size::ZERO),
_originalBarRect(Rect::ZERO),
_progressBarTextureSize(Size::ZERO),
_originalProgressBarRect(Rect::ZERO),
_slidBallNormalRenderer(nullptr),
_slidBallPressedRenderer(nullptr),
_slidBallDisabledRenderer(nullptr),
_slidBallRenderer(nullptr),
_barLength(0.0),
_percent(0),
_maxPercent(100),
_scale9Enabled(false),
_prevIgnoreSize(true),
_zoomScale(0.1f),
_sliderBallNormalTextureScaleX(1.0),
_sliderBallNormalTextureScaleY(1.0),
_isSliderBallPressedTextureLoaded(false),
_isSliderBallDisabledTexturedLoaded(false),
_capInsetsBarRenderer(Rect::ZERO),
_capInsetsProgressBarRenderer(Rect::ZERO),
_sliderEventListener(nullptr),
_sliderEventSelector(nullptr),
_eventCallback(nullptr),
_barTexType(TextureResType::LOCAL),
_progressBarTexType(TextureResType::LOCAL),
_ballNTexType(TextureResType::LOCAL),
_ballPTexType(TextureResType::LOCAL),
_ballDTexType(TextureResType::LOCAL),
_barRendererAdaptDirty(true),
_progressBarRendererDirty(true),
_textureFile(""),
_progressBarTextureFile(""),
_slidBallNormalTextureFile(""),
_slidBallPressedTextureFile(""),
_slidBallDisabledTextureFile("")
{
    setTouchEnabled(true);
}

Slider::~Slider()
{
    _sliderEventListener = nullptr;
    _sliderEventSelector = nullptr;
}

Slider* Slider::create()
{
    Slider* widget = new (std::nothrow) Slider();
    if (widget && widget->init())
    {
        widget->autorelease();
        return widget;
    }
    CC_SAFE_DELETE(widget);
    return nullptr;
}
    
Slider* Slider::create(const std::string& barTextureName,
                      const std::string& normalBallTextureName,
                      TextureResType resType)
{
    Slider* widget = new (std::nothrow) Slider();
    if (widget && widget->init())
    {
        widget->loadBarTexture(barTextureName, resType);
        widget->loadSlidBallTextureNormal(normalBallTextureName, resType);
        widget->autorelease();
        return widget;
    }
    CC_SAFE_DELETE(widget);
    return nullptr;
}

bool Slider::init()
{
    if (Widget::init())
    {
        return true;
    }
    return false;
}

void Slider::initRenderer()
{
    _barRenderer = Scale9Sprite::create();
    _progressBarRenderer = Scale9Sprite::create();
    _barRenderer->setScale9Enabled(false);
    _progressBarRenderer->setScale9Enabled(false);
    
    _progressBarRenderer->setAnchorPoint(Vec2(0.0f, 0.5f));
    
    addProtectedChild(_barRenderer, BASEBAR_RENDERER_Z, -1);
    addProtectedChild(_progressBarRenderer, PROGRESSBAR_RENDERER_Z, -1);
    
    _slidBallNormalRenderer = Sprite::create();
    _slidBallPressedRenderer = Sprite::create();
    _slidBallPressedRenderer->setVisible(false);
    _slidBallDisabledRenderer = Sprite::create();
    _slidBallDisabledRenderer->setVisible(false);
    
    _slidBallRenderer = Node::create();
    
    _slidBallRenderer->addChild(_slidBallNormalRenderer);
    _slidBallRenderer->addChild(_slidBallPressedRenderer);
    _slidBallRenderer->addChild(_slidBallDisabledRenderer);
    _slidBallRenderer->setCascadeColorEnabled(true);
    _slidBallRenderer->setCascadeOpacityEnabled(true);
    
    addProtectedChild(_slidBallRenderer, SLIDBALL_RENDERER_Z, -1);
}

void Slider::loadBarTexture(const std::string& fileName, TextureResType texType)
{
    _textureFile = fileName;
    _barTexType = texType;
    if (fileName.empty())
    {
        _barRenderer->resetRender();
    }
    else
    {
        switch (_barTexType)
        {
        case TextureResType::LOCAL:
            _barRenderer->setTexture(fileName);
            break;
        case TextureResType::PLIST:
            _barRenderer->setSpriteFrame(fileName);
            break;
        default:
            break;
        }
    }
    //FIXME: https://github.com/cocos2d/cocos2d-x/issues/12249
    if (!_ignoreSize && _customSize.equals(Size::ZERO)) {
        _customSize = _barRenderer->getContentSize();
    }
    this->setupBarTexture();
}
void Slider::loadBarTexture(SpriteFrame* spriteframe)
{
    _barRenderer->setSpriteFrame(spriteframe);
    this->setupBarTexture();
}

void Slider::setupBarTexture()
{
    this->updateChildrenDisplayedRGBA();
    _barRendererAdaptDirty = true;
    _progressBarRendererDirty = true;
    updateContentSizeWithTextureSize(_barRenderer->getContentSize());
    _barTextureSize = _barRenderer->getContentSize();
    _originalBarRect = _barRenderer->getTextureRect();
}

void Slider::loadProgressBarTexture(const std::string& fileName, TextureResType texType)
{
    _progressBarTextureFile = fileName;
    _progressBarTexType = texType;
    if (fileName.empty())
    {
        _progressBarRenderer->resetRender();
    }
    else
    {
        switch (_progressBarTexType)
        {
        case TextureResType::LOCAL:
            _progressBarRenderer->setTexture(fileName);
            break;
        case TextureResType::PLIST:
            _progressBarRenderer->setSpriteFrame(fileName);
            break;
        default:
            break;
        }
    }
    this->setupProgressBarTexture();
}

void Slider::loadProgressBarTexture(SpriteFrame* spriteframe)
{
    _progressBarRenderer->setSpriteFrame(spriteframe);
    this->setupProgressBarTexture();
}

void Slider::setupProgressBarTexture()
{
    this->updateChildrenDisplayedRGBA();
    _progressBarRenderer->setAnchorPoint(Vec2(0.0f, 0.5f));
    _progressBarTextureSize = _progressBarRenderer->getContentSize();
    _originalProgressBarRect = _progressBarRenderer->getTextureRect();
    _progressBarRendererDirty = true;
}

void Slider::setScale9Enabled(bool able)
{
    if (_scale9Enabled == able)
    {
        return;
    }
    
    _scale9Enabled = able;
    _barRenderer->setScale9Enabled(_scale9Enabled);
    _progressBarRenderer->setScale9Enabled(_scale9Enabled);
    
    if (_scale9Enabled)
    {
        bool ignoreBefore = _ignoreSize;
        ignoreContentAdaptWithSize(false);
        _prevIgnoreSize = ignoreBefore;
    }
    else
    {
        ignoreContentAdaptWithSize(_prevIgnoreSize);
    }
    setCapInsetsBarRenderer(_capInsetsBarRenderer);
    setCapInsetProgressBarRenderer(_capInsetsProgressBarRenderer);
    _barRendererAdaptDirty = true;
    _progressBarRendererDirty = true;
}
    
bool Slider::isScale9Enabled()const
{
    return _scale9Enabled;
}

void Slider::ignoreContentAdaptWithSize(bool ignore)
{
    if (!_scale9Enabled || (_scale9Enabled && !ignore))
    {
        Widget::ignoreContentAdaptWithSize(ignore);
        _prevIgnoreSize = ignore;
    }
}

void Slider::setCapInsets(const Rect &capInsets)
{
    setCapInsetsBarRenderer(capInsets);
    setCapInsetProgressBarRenderer(capInsets);
}

void Slider::setCapInsetsBarRenderer(const Rect &capInsets)
{
    _capInsetsBarRenderer = ui::Helper::restrictCapInsetRect(capInsets, _barRenderer->getContentSize());
    if (!_scale9Enabled)
    {
        return;
    }

    // textureRect should be restored in order to calculate the scale9 correctly
    // https://github.com/cocos2d/cocos2d-x/issues/16928
    _barRenderer->setTextureRect(_originalBarRect, _barRenderer->isTextureRectRotated(), _barTextureSize);

    _barRenderer->setCapInsets(_capInsetsBarRenderer);
}
    
const Rect& Slider::getCapInsetsBarRenderer()const
{
    return _capInsetsBarRenderer;
}

void Slider::setCapInsetProgressBarRenderer(const Rect &capInsets)
{
    _capInsetsProgressBarRenderer = ui::Helper::restrictCapInsetRect(capInsets, _progressBarRenderer->getContentSize());

    if (!_scale9Enabled)
    {
        return;
    }
    // textureRect should be restored in order to calculate the scale9 correctly
    // https://github.com/cocos2d/cocos2d-x/issues/16928
    _progressBarRenderer->setTextureRect(_originalProgressBarRect, _progressBarRenderer->isTextureRectRotated(), _progressBarTextureSize);

    _progressBarRenderer->setCapInsets(_capInsetsProgressBarRenderer);
}
    
const Rect& Slider::getCapInsetsProgressBarRenderer()const
{
    return _capInsetsProgressBarRenderer;
}

void Slider::loadSlidBallTextures(const std::string& normal,
                                      const std::string& pressed,
                                      const std::string& disabled,
                                      TextureResType texType)
{
    loadSlidBallTextureNormal(normal, texType);
    loadSlidBallTexturePressed(pressed,texType);
    loadSlidBallTextureDisabled(disabled,texType);
}

void Slider::loadSlidBallTextureNormal(const std::string& normal,TextureResType texType)
{
    _slidBallNormalTextureFile = normal;
    _ballNTexType = texType;
    if (normal.empty())
    {
        _slidBallNormalRenderer->init();
    }
    else
    {
        switch (_ballNTexType)
        {
        case TextureResType::LOCAL:
            _slidBallNormalRenderer->setTexture(normal);
            break;
        case TextureResType::PLIST:
            _slidBallNormalRenderer->setSpriteFrame(normal);
            break;
        default:
            break;
        }
    }
    this->updateChildrenDisplayedRGBA();
}
void Slider::loadSlidBallTextureNormal(SpriteFrame* spriteframe)
{
    _slidBallNormalRenderer->setSpriteFrame(spriteframe);
    this->updateChildrenDisplayedRGBA();
}

void Slider::loadSlidBallTexturePressed(const std::string& pressed,TextureResType texType)
{
    _slidBallPressedTextureFile = pressed;
    _isSliderBallPressedTextureLoaded = !pressed.empty();
    _ballPTexType = texType;
    if (pressed.empty())
    {
        _slidBallPressedRenderer->init();
    }
    else
    {
        switch (_ballPTexType)
        {
        case TextureResType::LOCAL:
            _slidBallPressedRenderer->setTexture(pressed);
            break;
        case TextureResType::PLIST:
            _slidBallPressedRenderer->setSpriteFrame(pressed);
            break;
        default:
            break;
        }
    }
    this->updateChildrenDisplayedRGBA();
}


void Slider::loadSlidBallTexturePressed(SpriteFrame* spriteframe)
{
    _slidBallPressedRenderer->setSpriteFrame(spriteframe);
    this->updateChildrenDisplayedRGBA();
}

void Slider::loadSlidBallTextureDisabled(const std::string& disabled,TextureResType texType)
{
    _slidBallDisabledTextureFile = disabled;
    _isSliderBallDisabledTexturedLoaded = !disabled.empty();
    _ballDTexType = texType;
    if (disabled.empty())
    {
        _slidBallDisabledRenderer->init();
    }
    else
    {
        switch (_ballDTexType)
        {
        case TextureResType::LOCAL:
            _slidBallDisabledRenderer->setTexture(disabled);
            break;
        case TextureResType::PLIST:
            _slidBallDisabledRenderer->setSpriteFrame(disabled);
            break;
        default:
            break;
        }
    }
    this->updateChildrenDisplayedRGBA();
}

void Slider::loadSlidBallTextureDisabled(SpriteFrame* spriteframe)
{
    _slidBallDisabledRenderer->setSpriteFrame(spriteframe);
    this->updateChildrenDisplayedRGBA();
}

void Slider::setMaxPercent(int percent)
{
    _maxPercent = percent;
}

int Slider::getMaxPercent()const
{
    return _maxPercent;
}

void Slider::setPercent(int percent)
{
    if (percent > _maxPercent)
    {
        percent = _maxPercent;
    }
    if (percent < 0)
    {
        percent = 0;
    }
    _percent = percent;
    float res = 1.0 * percent / _maxPercent;
    float dis = _barLength * res;
    _slidBallRenderer->setPosition(dis, _contentSize.height / 2.0f);
    if (_scale9Enabled)
    {
        _progressBarRenderer->setPreferredSize(Size(dis,_contentSize.height));
    }
    else
    {
        Rect rect = _progressBarRenderer->getTextureRect();
        rect.size.width = _progressBarTextureSize.width * res;
        _progressBarRenderer->setTextureRect(rect, _progressBarRenderer->isTextureRectRotated(), rect.size);
    }
}
    
bool Slider::hitTest(const cocos2d::Vec2 &pt, const Camera *camera, Vec3* /*p*/) const
{
    Rect rect;
    rect.size = _slidBallNormalRenderer->getContentSize();
    auto w2l = _slidBallNormalRenderer->getWorldToNodeTransform();

    Rect sliderBarRect;
    sliderBarRect.size = this->_barRenderer->getContentSize();
    auto barW2l = this->_barRenderer->getWorldToNodeTransform();
    return isScreenPointInRect(pt, camera, w2l, rect, nullptr) || isScreenPointInRect(pt, camera, barW2l, sliderBarRect, nullptr);
}

bool Slider::onTouchBegan(Touch *touch, Event *unusedEvent)
{
    bool pass = Widget::onTouchBegan(touch, unusedEvent);
    if (_hitted)
    {
        setPercent(getPercentWithBallPos(_touchBeganPosition));
        percentChangedEvent(EventType::ON_SLIDEBALL_DOWN);
    }
    return pass;
}

void Slider::onTouchMoved(Touch *touch, Event* /*unusedEvent*/)
{
    _touchMovePosition = touch->getLocation();
    setPercent(getPercentWithBallPos(_touchMovePosition));
    percentChangedEvent(EventType::ON_PERCENTAGE_CHANGED);
}

void Slider::onTouchEnded(Touch *touch, Event *unusedEvent)
{
    Widget::onTouchEnded(touch, unusedEvent);
    percentChangedEvent(EventType::ON_PERCENTAGE_CHANGED);
    percentChangedEvent(EventType::ON_SLIDEBALL_UP);
}

void Slider::onTouchCancelled(Touch *touch, Event *unusedEvent)
{
    Widget::onTouchCancelled(touch, unusedEvent);
    percentChangedEvent(EventType::ON_SLIDEBALL_CANCEL);
}

float Slider::getPercentWithBallPos(const Vec2 &pt) const
{
    Vec3 p;
    Widget::hitTest(pt, _hittedByCamera, &p);
    return ((p.x/_barLength) * static_cast<float>(_maxPercent));
}

void Slider::addEventListenerSlider(Ref *target, SEL_SlidPercentChangedEvent selector)
{
    _sliderEventListener = target;
    _sliderEventSelector = selector;
}
    
void Slider::addEventListener(const ccSliderCallback& callback)
{
    _eventCallback = callback;
}

void Slider::percentChangedEvent(EventType event)
{
    this->retain();
    if (_sliderEventListener && _sliderEventSelector)
    {
        (_sliderEventListener->*_sliderEventSelector)(this,SLIDER_PERCENTCHANGED);
    }
    if (_eventCallback)
    {
        _eventCallback(this,event);
    }
    if (_ccEventCallback)
    {
        _ccEventCallback(this, static_cast<int>(EventType::ON_PERCENTAGE_CHANGED));
    }
    this->release();
}

int Slider::getPercent()const
{
    return _percent;
}

void Slider::onSizeChanged()
{
    Widget::onSizeChanged();
    _barRendererAdaptDirty = true;
    _progressBarRendererDirty = true;
}
    
void Slider::adaptRenderers()
{
    if (_barRendererAdaptDirty)
    {
        barRendererScaleChangedWithSize();
        _barRendererAdaptDirty = false;
    }
    if (_progressBarRendererDirty)
    {
        progressBarRendererScaleChangedWithSize();
        _progressBarRendererDirty = false;
    }
}

Size Slider::getVirtualRendererSize() const
{
    return _barRenderer->getContentSize();
}

Node* Slider::getVirtualRenderer()
{
    return _barRenderer;
}

void Slider::barRendererScaleChangedWithSize()
{
    if (_unifySize)
    {
        _barLength = _contentSize.width;
        _barRenderer->setPreferredSize(_contentSize);
    }
    else if (_ignoreSize)
    {
        
        _barRenderer->setScale(1.0f);
        _barLength = _contentSize.width;
    }
    else
    {
        _barLength = _contentSize.width;
        if (_scale9Enabled)
        {
            _barRenderer->setPreferredSize(_contentSize);
            _barRenderer->setScale(1.0f);
        }
        else
        {
            Size btextureSize = _barTextureSize;
            if (btextureSize.width <= 0.0f || btextureSize.height <= 0.0f)
            {
                _barRenderer->setScale(1.0f);
            }
            else
            {
                float bscaleX = _contentSize.width / btextureSize.width;
                float bscaleY = _contentSize.height / btextureSize.height;
                _barRenderer->setScaleX(bscaleX);
                _barRenderer->setScaleY(bscaleY);
            }
        }
    }
    _barRenderer->setPosition(_contentSize.width / 2.0f, _contentSize.height / 2.0f);
    setPercent(_percent);
}

void Slider::progressBarRendererScaleChangedWithSize()
{
    if (_unifySize)
    {
        _progressBarRenderer->setPreferredSize(_contentSize);
    }
    else if (_ignoreSize)
    {
        if (!_scale9Enabled)
        {
            Size ptextureSize = _progressBarTextureSize;
            float pscaleX = _contentSize.width / ptextureSize.width;
            float pscaleY = _contentSize.height / ptextureSize.height;
            _progressBarRenderer->setScaleX(pscaleX);
            _progressBarRenderer->setScaleY(pscaleY);
        }
    }
    else
    {
        if (_scale9Enabled)
        {
            _progressBarRenderer->setPreferredSize(_contentSize);
            _progressBarRenderer->setScale(1.0);
        }
        else
        {
            Size ptextureSize = _progressBarTextureSize;
            if (ptextureSize.width <= 0.0f || ptextureSize.height <= 0.0f)
            {
                _progressBarRenderer->setScale(1.0f);
                return;
            }
            float pscaleX = _contentSize.width / ptextureSize.width;
            float pscaleY = _contentSize.height / ptextureSize.height;
            _progressBarRenderer->setScaleX(pscaleX);
            _progressBarRenderer->setScaleY(pscaleY);
        }
    }
    _progressBarRenderer->setPosition(0.0f, _contentSize.height / 2.0f);
    setPercent(_percent);
}

void Slider::onPressStateChangedToNormal()
{
    _slidBallNormalRenderer->setVisible(true);
    _slidBallPressedRenderer->setVisible(false);
    _slidBallDisabledRenderer->setVisible(false);
    
    _slidBallNormalRenderer->setGLProgramState(this->getNormalGLProgramState(_slidBallNormalRenderer->getTexture()));
    _slidBallNormalRenderer->setScale(_sliderBallNormalTextureScaleX, _sliderBallNormalTextureScaleY);
}

void Slider::onPressStateChangedToPressed()
{
    _slidBallNormalRenderer->setGLProgramState(this->getNormalGLProgramState(_slidBallNormalRenderer->getTexture()));

    
    if (!_isSliderBallPressedTextureLoaded)
    {
        _slidBallNormalRenderer->setScale(_sliderBallNormalTextureScaleX + _zoomScale,
                                          _sliderBallNormalTextureScaleY + _zoomScale);
    }
    else
    {
        _slidBallNormalRenderer->setVisible(false);
        _slidBallPressedRenderer->setVisible(true);
        _slidBallDisabledRenderer->setVisible(false);
    }
}

void Slider::onPressStateChangedToDisabled()
{
    if (!_isSliderBallDisabledTexturedLoaded)
    {
        _slidBallNormalRenderer->setGLProgramState(this->getGrayGLProgramState(_slidBallNormalRenderer->getTexture()));
        _slidBallNormalRenderer->setVisible(true);
    }
    else
    {
        _slidBallNormalRenderer->setVisible(false);
        _slidBallDisabledRenderer->setVisible(true);
    }
    
    _slidBallNormalRenderer->setScale(_sliderBallNormalTextureScaleX, _sliderBallNormalTextureScaleY);
    
    _slidBallPressedRenderer->setVisible(false);
}
    
    
void Slider::setZoomScale(float scale)
{
    _zoomScale = scale;
}

float Slider::getZoomScale()const
{
    return _zoomScale;
}


std::string Slider::getDescription() const
{
    return "Slider";
}

Widget* Slider::createCloneInstance()
{
    return Slider::create();
}

void Slider::copySpecialProperties(Widget *widget)
{
    Slider* slider = dynamic_cast<Slider*>(widget);
    if (slider)
    {
        _prevIgnoreSize = slider->_prevIgnoreSize;
        setScale9Enabled(slider->_scale9Enabled);

        // clone the inner sprite: https://github.com/cocos2d/cocos2d-x/issues/16928
        slider->_barRenderer->copyTo(_barRenderer);
        setupBarTexture();
        slider->_progressBarRenderer->copyTo(_progressBarRenderer);
        setupProgressBarTexture();

        loadSlidBallTextureNormal(slider->_slidBallNormalRenderer->getSpriteFrame());
        loadSlidBallTexturePressed(slider->_slidBallPressedRenderer->getSpriteFrame());
        loadSlidBallTextureDisabled(slider->_slidBallDisabledRenderer->getSpriteFrame());
        setPercent(slider->getPercent());
        setMaxPercent(slider->getMaxPercent());
        _isSliderBallPressedTextureLoaded = slider->_isSliderBallPressedTextureLoaded;
        _isSliderBallDisabledTexturedLoaded = slider->_isSliderBallDisabledTexturedLoaded;
        _sliderEventListener = slider->_sliderEventListener;
        _sliderEventSelector = slider->_sliderEventSelector;
        _eventCallback = slider->_eventCallback;
        _ccEventCallback = slider->_ccEventCallback;
    }
}

Sprite* Slider::getSlidBallNormalRenderer() const {
    return _slidBallNormalRenderer;
}

Sprite* Slider::getSlidBallPressedRenderer() const {
    return _slidBallPressedRenderer;
}

Sprite* Slider::getSlidBallDisabledRenderer() const {
    return _slidBallDisabledRenderer;
}

Node* Slider::getSlidBallRenderer() const {
    return _slidBallRenderer;
}

ResourceData Slider::getBackFile()
{
    ResourceData rData;
    rData.type = (int)_barTexType;
    rData.file = _textureFile;
    return rData;
}
ResourceData Slider::getProgressBarFile()
{
    ResourceData rData;
    rData.type = (int)_progressBarTexType;
    rData.file = _progressBarTextureFile;
    return rData;
}
ResourceData Slider::getBallNormalFile()
{
    ResourceData rData;
    rData.type = (int)_ballNTexType;
    rData.file = _slidBallNormalTextureFile;
    return rData;
}
ResourceData Slider::getBallPressedFile()
{
    ResourceData rData;
    rData.type = (int)_ballPTexType;
    rData.file = _slidBallPressedTextureFile;
    return rData;
}
ResourceData Slider::getBallDisabledFile()
{
    ResourceData rData;
    rData.type = (int)_ballDTexType;
    rData.file = _slidBallDisabledTextureFile;
    return rData;
}

}

NS_CC_END