Question

如何获取某个在层容器中的ui控件在屏幕上的绝对坐标

Answer 1

CCPoint ret = getPosition();
CCNode* cobj;
UIWidget* uobj = this;
UIWidget* tuobj;
bool lastIsUI = true;

while(true){
if(lastIsUI){
tuobj = dynamic_cast(uobj->getWidgetParent());
if(tuobj != NULL){
uobj = tuobj;
ret.x += uobj->getPosition().x;
ret.y += uobj->getPosition().y;
lastIsUI = true;
}else{
cobj = dynamic_cast(uobj->getUILayer());
if(cobj == NULL)break;
ret.x += cobj->getPosition().x;
ret.y += cobj->getPosition().y;
lastIsUI = false;
}
}else{
cobj = dynamic_cast(cobj->getParent());
if(cobj == NULL)break;
ret.x += cobj->getPosition().x;
ret.y += cobj->getPosition().y;
}

}
return ret;
}[/code][code]UILayer* UIWidget::getUILayer(){
return m_pUILayer;
}[/code]然后通过getAbsolutePosition就可以获得一个表示坐标的ccpoint了。