#include "../CCControlScene.h"
class CCControlSliderTest : public CCControlScene
{
public:
CCControlSliderTest();
virtual ~CCControlSliderTest();
bool init();
void valueChanged(CCObject *sender, CCControlEvent controlEvent);
protected:
CCLabelTTF* m_pDisplayValueLabel;
CONTROL_SCENE_CREATE_FUNC(CCControlSliderTest)
};
CCControlSliderTest::~CCControlSliderTest()
{
CC_SAFE_RELEASE_NULL(m_pDisplayValueLabel);
}
bool CCControlSliderTest::init()
{
if (CCControlScene::init())
{
CCSize screenSize = CCDirector::sharedDirector()->getWinSize();
// Add a label in which the slider value will be displayed
m_pDisplayValueLabel = CCLabelTTF::create("Move the slider thumb!
The lower slider is restricted." ,"Marker Felt", 32);
m_pDisplayValueLabel->retain();
m_pDisplayValueLabel->setAnchorPoint(ccp(0.5f, -1.0f));
m_pDisplayValueLabel->setPosition(ccp(screenSize.width / 1.7f, screenSize.height / 2.0f));
addChild(m_pDisplayValueLabel);
// Add the slider
//第一个参数是背景,第二个参数是进度条,第三个参数表示拖动按钮
CCControlSlider *slider = CCControlSlider::create("extensions/sliderTrack.png","extensions/sliderProgress.png" ,"extensions/sliderThumb.png");
slider->setAnchorPoint(ccp(0.5f, 1.0f));
slider->setMinimumValue(0.0f); // Sets the min value of range
slider->setMaximumValue(5.0f); // Sets the max value of range
slider->setPosition(ccp(screenSize.width / 2.0f, screenSize.height / 2.0f + 16));
slider->setTag(1);
// When the value of the slider will change, the given selector will be call
//当进度值改变时,触发的函数
slider->addTargetWithActionForControlEvents(this, cccontrol_selector(CCControlSliderTest::valueChanged), CCControlEventValueChanged);
CCControlSlider *restrictSlider = CCControlSlider::create("extensions/sliderTrack.png","extensions/sliderProgress.png" ,"extensions/sliderThumb.png");
restrictSlider->setAnchorPoint(ccp(0.5f, 1.0f));
restrictSlider->setMinimumValue(0.0f); // Sets the min value of range
restrictSlider->setMaximumValue(5.0f); // Sets the max value of range
//设置允许的最大值和最小值
restrictSlider->setMaximumAllowedValue(4.0f);
restrictSlider->setMinimumAllowedValue(1.5f);
restrictSlider->setValue(3.0f);
restrictSlider->setPosition(ccp(screenSize.width / 2.0f, screenSize.height / 2.0f - 24));
restrictSlider->setTag(2);
//same with restricted
restrictSlider->addTargetWithActionForControlEvents(this, cccontrol_selector(CCControlSliderTest::valueChanged), CCControlEventValueChanged);
addChild(slider);
addChild(restrictSlider);
return true;
}
return false;
}
void CCControlSliderTest::valueChanged(CCObject *sender, CCControlEvent controlEvent)
{
CCControlSlider* pSlider = (CCControlSlider*)sender;
// Change value of label.
if(pSlider->getTag() == 1)
m_pDisplayValueLabel->setString(CCString::createWithFormat("Upper slider value = %.02f", pSlider->getValue())->getCString());
if(pSlider->getTag() == 2)
m_pDisplayValueLabel->setString(CCString::createWithFormat("Lower slider value = %.02f", pSlider->getValue())->getCString());
}
//pSlider->getValue()可以获取滑动条的值