cocos2dx CCControlButton 按钮事件

最新推荐文章于 2018-08-01 09:37:00 发布

原创最新推荐文章于 2018-08-01 09:37:00 发布 · 586 阅读

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本文介绍如何使用Cocos2d-x创建一个带有不同状态变化的按钮，并实现按钮的触摸事件处理，包括按下、内部抬起及外部抬起等状态。

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bool HelloWorld::init()
{
//////////////////////////////
// 1. super init first
if ( !CCLayer::init() )
{
return false;
}
CCLabelTTF * label = CCLabelTTF::create("为选中文字", "MarkerFelt",25);
CCControlButton * button = CCControlButton ::create(label,CCScale9Sprite::create("button.png"));
button->setPosition(ccp(240, 170));
// 按钮选中后背景图响应的状态
button->setTitleColorForState(ccc3(255, 0, 0), CCControlStateHighlighted);
// 按钮选中后文字响应的状态
button->setTitleForState(CCString::create("选中文字"), CCControlStateHighlighted);
addChild(button);
// 按下按钮事件回调
button->addTargetWithActionForControlEvents(this, cccontrol_selector(HelloWorld::touchDownAction), CCControlEventTouchDown);
// 按钮在其内部拾起事件回调
button->addTargetWithActionForControlEvents(this
, cccontrol_selector( HelloWorld::touchUpInsideAction), CCControlEventTouchDragEnter);
// 按钮在其外部拾起事件回调
button->addTargetWithActionForControlEvents(this,cccontrol_selector(HelloWorld::touchUpOutsideAction), CCControlEventTouchDragOutside);
// 用于显示按钮的状态
CCLabelTTF * la = CCLabelTTF ::create(" ", "MarkerFelt",20);
la->setColor(ccc3(255, 0, 0));
la->setPosition(ccp(240, 220));
addChild(la,0,923);
return true;
}
// 按下按钮事件回调
void HelloWorld:: touchDownAction(CCObject * sender , CCControlEvent * controlEvent)
{
CCLabelTTF * label = (CCLabelTTF*) this ->getChildByTag(923);
label->setString(CCString::createWithFormat("按下")->getCString());
}
// 按钮在其内部抬起事件回调
void HelloWorld::touchUpInsideAction(CCObject * sender , CCControlEvent * controlEvent)
{
CCLabelTTF * label = (CCLabelTTF*) this ->getChildByTag(923);
label->setString(CCString::createWithFormat("内部抬起")->getCString());
}
// 按钮在其外部抬起事件回调
void HelloWorld::touchUpOutsideAction(CCObject * sender , CCControlEvent * controlEvent)
{
CCLabelTTF * label = (CCLabelTTF*) this ->getChildByTag(923);
label->setString(CCString::createWithFormat("外部抬起")->getCString());
}

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。cpp要声明的

#include "cocos2d.h"
#include "cocos-ext.h"
using namespace cocos2d;
using namespace extension;
class HelloWorld : public cocos2d::CCLayer
{
public:
// Method 'init' in cocos2d-x returns bool, instead of 'id' in cocos2d-iphone (an object pointer)
virtual bool init();
// there's no 'id' in cpp, so we recommend to return the class instance pointer
static cocos2d::CCScene* scene();
// a selector callback
void menuCloseCallback(CCObject* pSender);
// preprocessor macro for "static create()" constructor ( node() deprecated )
CREATE_FUNC(HelloWorld);
// 按下按钮事件回调
void touchDownAction(CCObject * sender , CCControlEvent * controlEvent);
// 按钮在其内部拾起事件回调
void touchUpInsideAction(CCObject * sender , CCControlEvent * controlEvent);
// 按钮在其外部拾起事件回调
void touchUpOutsideAction(CCObject * sender , CCControlEvent * controlEvent);
};

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