cocos2d-x之加法计算器

bool HelloWorld::init()

{

if ( !Layer::init() )

{

return false;

}

Size visibleSize = Director::getInstance()->getVisibleSize();

Vec2 origin = Director::getInstance()->getVisibleOrigin();

buildUI();

addListeners();

return true;

}

void HelloWorld::buildUI(){

aTF=TextFieldTTF::textFieldWithPlaceHolder("Value","Courier",16);

aTF->setPosition(100,300);

addChild(aTF);

auto addLabel=Label::create();

addLabel->setString("+");

addChild(addLabel);

addLabel->setPosition(aTF->getPositionX()+50,aTF->getPositionY());

bTF=TextFieldTTF::textFieldWithPlaceHolder("Value","Courier",16);

bTF->setPosition(addLabel->getPositionX()+50,aTF->getPositionY());

addChild(bTF);

auto equalLabel=Label::create();

equalLabel->setString("=");

addChild(equalLabel);

equalLabel->setPosition(bTF->getPositionX()+50,aTF->getPositionY());

resultLabel=Label::create();

addChild(resultLabel);

resultLabel->setPosition(equalLabel->getPositionX()+50,aTF->getPositionY());

addBtn=Label::create();

addBtn->setString("Add");

addBtn->setSystemFontSize(16);

addChild(addBtn);

addBtn->setPosition(aTF->getPositionX(),aTF->getPositionY()-50);

}

void HelloWorld::addListeners(){

auto director=Director::getInstance();

auto handler=[=](Touch *t,Event *e){

auto target=e->getCurrentTarget();

if (target->getBoundingBox().containsPoint(t->getLocation())) {

if (aTF==target) {

aTF->attachWithIME();

}else if(bTF==target){

bTF->attachWithIME();

}else if (target==addBtn){

int a=__String::create(aTF->getString())->intValue();

int b=__String::create(bTF->getString())->intValue();

resultLabel->setString(StringUtils::format("%d",a+b));

}

}

return false;

};

auto addListenerToTarget=[director,handler](Node *target){

auto l=EventListenerTouchOneByOne::create();

l->onTouchBegan=handler;

director->getEventDispatcher()->addEventListenerWithSceneGraphPriority(l,target);

};

addListenerToTarget(addBtn);

addListenerToTarget(aTF);

addListenerToTarget(bTF);

//    auto addListener=EventListenerTouchOneByOne::create();

//    addListener->onTouchBegan=handler;

//    director->getEventDispatcher()->addEventListenerWithSceneGraphPriority(addListener,addBtn);

//

//    auto aTfClickListener=EventListenerTouchOneByOne::create();

//    aTfClickListener->onTouchBegan=handler;

//    director->getEventDispatcher()->addEventListenerWithSceneGraphPriority(aTfClickListener,aTF);

//

//    auto bTfClickListener=EventListenerTouchOneByOne::create();

//    bTfClickListener->onTouchBegan=handler;

//    director->getEventDispatcher()->addEventListenerWithSceneGraphPriority(bTfClickListener,bTF);

}