1cocos2dx扩展库UI控件，CCControlSlider，CCScale9Sprite九妹图,CCControlSwitch,CCControlButton



1. UI控件来自cocos2dx的扩展库，完善了UI方面的元素，使cocos2dx更加丰富多彩。使用扩展库需包含：

#include “cocos-ext.h” USING_NS_CC_EXT;

1. CCControlSlider

CCControlSlider * slider = CCControlSlider::create(“sliderTrack.png”,”sliderProgress.png”,”sliderThumb.png”);

第一个参数表示，slider滑动的轨道，即背景色。第二个参数表示滑动的进度。第三个参数表示拖动的按钮。

slider->setMaximumValue(2.0f); //设置滑动最大值 slider->setMinimumValue(0.0f); //设置滑动最小值 slider->setValue(0.5f); //设置默认值 slider->setMaximumAllowedValue(1.2f); //设置某一个范围内的最大值 slider->setMinimumAllowedValue(0.3f); //设置某一个范围内的最小值

slider->addTargetWithActionForControlEvents(this, cccontrol_selector(T12UI::controlCallback), CCControlEventValueChanged);

设置事件的响应函数

typedef unsigned int CCControlEvent; typedef void (CCObject::*SEL_CCControlHandler)(CCObject*,CCControlEvent); #define cccontrol_selector(_SELECTOR)(SEL_CCControlHandler)(&_SELECTOR);

关于CCControlEvent

/** Kinds of possible events for the control objects. */ enum { CCControlEventTouchDown = 1 << 0, // A touch-down event in the control. CCControlEventTouchDragInside = 1 << 1, // An event where a finger is dragged inside the bounds of the control. CCControlEventTouchDragOutside = 1 << 2, // An event where a finger is dragged just outside the bounds of the control. CCControlEventTouchDragEnter = 1 << 3, // An event where a finger is dragged into the bounds of the control. CCControlEventTouchDragExit = 1 << 4, // An event where a finger is dragged from within a control to outside its bounds. CCControlEventTouchUpInside = 1 << 5, // A touch-up event in the control where the finger is inside the bounds of the control. CCControlEventTouchUpOutside = 1 << 6, // A touch-up event in the control where the finger is outside the bounds of the control. CCControlEventTouchCancel = 1 << 7, // A system event canceling the current touches for the control. CCControlEventValueChanged = 1 << 8 // A touch dragging or otherwise manipulating a control,causing it to emit a series of different values. }; typedef unsigned int CCControlEvent;

1. slider案例说明：

T12UI.h

#ifndef __T12UI_H__ #define __T12UI_H__ #include "cocos2d.h" #include "TBack.h" #include "cocos-ext.h" USING_NS_CC; USING_NS_CC_EXT; class T12UI :public TBack { public: static CCScene * scene(); CREATE_FUNC(T12UI); bool init(); CCLabelAtlas * atlas; //slider的回调函数 void sliderCallBack(CCObject* sender,CCControlEvent event); }; #endif

T12UI.cpp

#include "T12UI.h" #include "AppMacros.h" #include "SimpleAudioEngine.h" using namespace CocosDenshion; CCScene *T12UI::scene() { scene = CCScene::create(); T12UI * layer = create(); scene->addChild(layer); return scene; } //UI控件来自cocos2dx的扩展库，完善了UI方面的元素，使cocos2dx更加丰富多彩。使用扩展库需要包含 bool init() { TBack::init(); //第一个参数表示slider滑动的轨道，即背景色。第二个参数表示滑动的进度。 //第三个参数表示拖动的按钮 CCControlSlider *slider = CCControlSlider::create("sliderTrack.png","sliderProgress.png",21); font-family:新宋体; font-size:9.5pt">"sliderThumb.png"); //设置滑动最大值 slider->setMaximumValue(2.0f); //设置滑动的最小值 slider->setMinimumValue(0.0f); //设置默认值 slider->setValue(0.5f); //设置某一范围内的最大值，当移动到了1.2之后移动不了了 slider->setMaximumAllowedValue(1.2f); //设置某一范围内的最小值，向左移动到0.3之后移动不了了 slider->setMinimumAllowedValue(0.3f); //设置slider的所在位置 slider->setPosition(ccp(winSize.width / 2,winSize.height/2 - 30)); slider->addTargetWithActionForControlEvents( this, cccontrol_selector(sliderCallBack),138); font-family:新宋体; font-size:9.5pt">CCControlEventValueChanged); CCString *str = CCString::createWithFormat("%.2g",slider->getValue()); //第一个参数表示要显示的字符串 //第二个参数表示从哪张图片中取值 //第三个参数表示的是每个字的宽度width //第四个参数表示的是每个字的高度 //第五个参数表示的是起始的字符 /* creates the CCLabelAtlas with a string,a char map file(the atlas), the width and height of each element and the starting char of the atlas */ atlas = CCLabelAtlas::create( str->getCString(), "fonts/fps_images.png", 12,32,21); font-family:新宋体; font-size:9.5pt">'.'); atlas->setAnchorPoint(ccp(0.5,0.5)); //设置字体的放大效果 atlas->setScale(2.0f); atlas->winSize.height / 2 + 30)); addChild(atlas); slider->setValue(1.3f); addChild(slider); return true; } //设置slider的回调函数 //这里的sender表示发送的一者 void CCControlEvent event) { CCControlSlider * slider = (CCControlSlider *)sender; getValue()); //因为成为了全局的了，所以能够访问的到 atlas->setString(str->getCString()); }

运行结果： 最大值 最小范围： 最大范围： 运行结果在0.3和1.2之间

1. CCControlSwitch

第一个参数，掩底背景图片，第二个参数为开的图片，第三个参数为关的图片，第四个参数为手指划到按钮，第五，六个参数分别为开和关显示的文字。

CCControlSwitch * sw = CCControlSwitch::create( CCSprite::create("switch-mask.png"), CCSprite::create("switch-on.png"), CCSprite::create("switch-off.png"), CCSprite::create("switch-thumb.png"), CCLabelTTF::create("ON","Courier New",20), CCLabelTTF::create("OFF",20) );

设置时间触发后的响应函数

sw->addTargetWithActionForControlEvents(this,cccontrol_selector(T12UI::switchCallback), CCControlEventValueChanged)

如何在响应函数中获取选项

void T12UI::switchCallback(CCObject * sender,CCControlEvent event) { CCControlSwitch * sw = (CCControlSwitch *)sender; If(sw->isOn()) { CCLog(“On”); } else { CCLog(“off”); } }

5 CCControlSwitch案例说明

T12UI.h

init(); //开关的回调函数 void switchCallBack(init(); //通过SimpleAudioEngine的方式实现加载音乐 SimpleAudioEngine::sharedEngine()->preloadBackgroundMusic("audio/start.wav"); //创建开关、 //第一个参数为：掩底背景CCSprite //第二个参数为开的CCSprite //第三个参数为关的CCSprite //第四个参数为手指滑到CCSprite //第五个参数on的label //第六个参数为off的label CCControlSwitch *sw = CCControlSwitch::create( CCSprite::"switch-mask.png"), "switch-on.png"),21); font-family:新宋体; font-size:9.5pt">"switch-off.png"),21); font-family:新宋体; font-size:9.5pt">"switch-thumb.png"),133); font-family:新宋体; font-size:9.5pt">CCLabelTTF::"ON",21); font-family:新宋体; font-size:9.5pt">"Courier New",21); font-family:新宋体; font-size:9.5pt">"OFF",20) ); //设置开关的位置 sw->winSize.height / 2)); sw->addTargetWithActionForControlEvents(this,0); font-family:新宋体; font-size:9.5pt">switchCallBack),138); font-family:新宋体; font-size:9.5pt">CCControlEventValueChanged); //设置开关默认是关闭的 sw->setOn(false); //将开关添加到Layer中去 addChild(sw); return true; } //开关的回调函数 void CCControlSwitch * sw = (CCControlSwitch *)sender; if (sw->isOn()) { CCLog("click On"); //通过playBackgroundMusic打开音乐 playBackgroundMusic("audio/start.wav"); } else { //通过stopBackgroundMusic()关闭音乐 stopBackgroundMusic("audio/start.wav"); "click off"); } }

运行结果：

1. CCScale9Sprite九妹图

CCScale9Sprite对象，是一种CCSprite对象的变形，它的用法和CCSprite类似，不同点是：CCScale9Sprite对象有个特性就是缩放贴图时可以尽量不失帧。比如QQ聊天内边框

原理：

CCScale9Sprite的实现非常巧妙，是通过1个CCSpriteBatchNode和9个CCSprite来实现的，原理很简单，通过将原纹理资源切割成9部分（PS:这也是叫九宫图的原因）。根据想要的尺寸，完成以下三个步骤：

1. 保持4个角部分不变形

2. 单向拉伸4条边（即在4个角两两之间的边，比如上边，只做横向拉伸）

3. 双向拉伸中间部分（即九宫图的中间部分，横向，纵向同时拉伸，PS:拉伸比例不一定相同）

CCSpriteBatchNode的资源为整个的纹理，9 个CCSprite 对应于纹理的9

个部分（根据纹理不同，9 部分所占比例会有所不同），根据想要的尺寸，

将9 部分拼装在一起!

1. 需要包含的头文件

#include “cocos-ext.h” //包含cocos-ext.h头文件

using namespace cocos2d::extension; //引用cocos2d::extension 命名空间

使用说明：

CCScale9Sprite::create(const char* file,CCRect rect,CCRect,capInsets);

第一个参数为文件，第二个参数使用文件的大小，第三个参数如下，若未设置，或设置图分别如下：

我们知道CCSprite的拉伸方式是通过setScale();来实现的，而对于CCScale9Sprite则不同。它是通过setContentSize(constCCSize & size);来实现图片的拉伸。

测试代码：

CCScale9Sprite * spr = CCScale9Sprite::create("scale9.png",CCRectMake(0,116,102),CCRectMake(40,30,40)); spr->setPosition(ccp(winSize.width/2,winSize.height/2)); addChild(spr); //spr->setScale(4.0f); spr->setPreferredSize(CCSizeMake(400,200));

关于CCScale9Sprite::create()

T12UI.h

init(); }; #endif

CCScale9Sprite * s9spr = CCScale9Sprite::create( "scale9.png",138); font-family:新宋体; font-size:9.5pt">CCRectMake(0,138); font-family:新宋体; font-size:9.5pt">CCRectMake(30,40,56,20)); s9spr->winSize.height / 2)); addChild(s9spr); s9spr->setPreferredSize(CCSize(500,100)); return true; }

运行结果：

1. CControlButton

CCScale9Sprite * bgbutton = CCScale9Sprite::create("button.png"); //背景色图片 CCScale9Sprite * bgbuttonlighted = CCScale9Sprite::create("buttonHighlighted.png"); //背景色高亮图片 CCLabelTTF * titlebutton = CCLabelTTF::create("Touch Me","Courier New",30); //按钮的文本 CCControlButton * button = CCControlButton::create(titlebutton,bgbutton); //创建按钮 button->setColor(ccc3(159,168,176)); //调色 button->setBackgroundSpriteForState(bgbuttonlighted, CCControlStateHighlighted); //按下后背景高亮 button->setTitleColorForState(ccWHITE, CCControlStateHighlighted); //按下后文本高亮 button->addTargetWithActionForControlEvents(this,cccontrol_selector(T12UI::buttonTouchDown)); button->addTargetWithActionForControlEvents(this,cccontrol_selector(T12UI::buttonTouchDown),CCControlEventTouchDown); button->addTargetWithActionForControlEvents(this,cccontrol_selector(T12UI::buttonTouchDragInside),CCControlEventTouchDragInside);

响应的事件类型如下：

/** Kinds of possible events for the control objects. */ enum { }; typedef unsigned int CCControlEvent;

T12UI.h

init(); void touchDownCallBack(CCControlEvent event); void touchDragInsideCallBack(scene; } bool init(); CCScale9Sprite *bgButton = "button.png"); CCScale9Sprite *bgButtonLighted = "buttonHighlighted.png"); CCLabelTTF * text = "Touch Me",21); font-family:新宋体; font-size:9.5pt">"Couier New",50); CCControlButton * button = CCControlButton::create(text,bgButton); //为按钮添加位置 button->winSize.height / 2)); button->setBackgroundSpriteForState(bgButtonLighted,138); font-family:新宋体; font-size:9.5pt">CCControlStateHighlighted); button->setTitleColorForState(ccRED,138); font-family:新宋体; font-size:9.5pt">CCControlStateHighlighted); addChild(button); //为按钮添加监听事件,添加的是按钮被点击的事件 button->touchDownCallBack),138); font-family:新宋体; font-size:9.5pt">CCControlEventTouchDown); //为按钮添加监听事件，添加的是按钮Drag的事件 button->touchDragInsideCallBack),138); font-family:新宋体; font-size:9.5pt">CCControlEventTouchDragInside); return true; } void CCControlEvent event) { "touchDownCallBack"); } void "touchDragInsideCallBack"); }

运行结果：