Cocos页面滑动指示圆点

// // SliderIndicatorLayout.cpp // ht_mobile_cpp // // Created by 杜甲 on 14-7-9. // // #include "SliderIndicatorLayout.h" #include "SliderIndicator.h" bool SliderIndicatorLayout::init() { bool bRet = false; do { CC_BREAK_IF(!ui::Layout::init()); setLayoutType(cocos2d::ui::Layout::Type::VERTICAL); winSize = Director::getInstance()->getWinSize(); radius = winSize.height / 130; bRet = true; } while (0); return bRet; } void SliderIndicatorLayout::addIndicator(int num) { setSize(Size(radius * 2, radius*3 * num)); for (int i = 0 ; i < num; i++) { auto indicator = SliderIndicator::create(); indicator->setSize(Size(radius, radius)); indicator->setCircleColor(Color4B(255, 40, 255, 255)); indicator->setTag(i); addChild(indicator); auto lp_indicator = ui::LinearLayoutParameter::create(); lp_indicator->setGravity(cocos2d::ui::LinearLayoutParameter::LinearGravity::TOP); lp_indicator->setMargin(ui::Margin(0,radius * 2.0f,0,0)); if (i == 0) { lp_indicator->setMargin(ui::Margin(0, 0,0,0)); } indicator->setLayoutParameter(lp_indicator); } changeIndicator(0); } void SliderIndicatorLayout::changeIndicator(int index) { for (int i = 0; i < getChildren().size(); i++) { auto indicator = dynamic_cast<SliderIndicator*>(getChildByTag(i)); indicator->setCircleColor(Color4B(255, 40, 255, 25)); if (i == index) { indicator->setCircleColor(Color4B(255, 40, 255, 255)); } } }