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

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;

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;

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()

{

CCScene * scene = CCScene::create();

T12UI * layer = T12UI::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 T12UI::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","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(T12UI::sliderCallBack),

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,'.');

atlas->setAnchorPoint(ccp(0.5,0.5));

//设置字体的放大效果

atlas->setScale(2.0f);

atlas->setPosition(ccp(winSize.width / 2, 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 T12UI::sliderCallBack(CCObject* sender, CCControlEvent event)

{

CCControlSlider * slider = (CCControlSlider *)sender;

CCString *str = CCString::createWithFormat("%.2g", slider->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

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","Courier New",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

#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();

//开关的回调函数

void switchCallBack(CCObject* sender, CCControlEvent event);

};

#endif

T12UI.cpp

#include "T12UI.h"

#include "AppMacros.h"

#include "SimpleAudioEngine.h"

using namespace CocosDenshion;

CCScene *T12UI::scene()

{

CCScene * scene = CCScene::create();

T12UI * layer = T12UI::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 T12UI::init()

{

TBack::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::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", "Courier New", 20)

);

//设置开关的位置

sw->setPosition(ccp(winSize.width / 2,winSize.height / 2));

sw->addTargetWithActionForControlEvents(this,

cccontrol_selector(T12UI::switchCallBack),

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 T12UI::switchCallBack(CCObject* sender, CCControlEvent event)

{

CCControlSwitch * sw = (CCControlSwitch *)sender;

if (sw->isOn())

{

CCLog("click On");

//通过playBackgroundMusic打开音乐

SimpleAudioEngine::sharedEngine()->playBackgroundMusic("audio/start.wav");

}

else

{

//通过stopBackgroundMusic()关闭音乐

SimpleAudioEngine::sharedEngine()->stopBackgroundMusic("audio/start.wav");

CCLog("click off");

}

运行结果：

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：

保持4个角部分不变形
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）
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!

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, 0, 116, 102), CCRectMake(40, 30, 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

#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();

};

#endif

T12UI.cpp

#include "T12UI.h"

#include "AppMacros.h"

#include "SimpleAudioEngine.h"

using namespace CocosDenshion;

CCScene *T12UI::scene()

{

CCScene * scene = CCScene::create();

T12UI * layer = T12UI::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 T12UI::init()

{

TBack::init();

CCScale9Sprite * s9spr = CCScale9Sprite::create(

"scale9.png",

CCRectMake(0, 0, 116, 102),

CCRectMake(30, 40, 56, 20));

s9spr->setPosition(ccp(winSize.width / 2, winSize.height / 2));

addChild(s9spr);

s9spr->setPreferredSize(CCSize(500,100));

return true;

}

运行结果：

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：