Cocos2d-x 布局Layout , VBox,HBox可以互相嵌套

最新推荐文章于 2024-02-02 14:11:54 发布

原创最新推荐文章于 2024-02-02 14:11:54 发布 · 2k 阅读

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本文介绍如何使用Cocos2d-x游戏引擎创建复杂的UI布局，包括水平布局(VBox)与垂直布局(HBox)的嵌套使用，并通过代码示例展示了如何设置触摸事件监听及响应。

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Size winSize = Director::getInstance()->getVisibleSize();
Layout* _verticalLayout = cocos2d::ui::VBox::create();//水平布局
_verticalLayout->setPosition(Vec2(winSize.width / 2 - 80,winSize.height - 70));
Layer* _uiLayer = Layer::create();
_uiLayer->addChild(_verticalLayout);
_verticalLayout->setScale(0.5);

_verticalLayout->setFocused(true);
_verticalLayout->setLoopFocus(true);
_verticalLayout->setTag(100);
//_firstFocusedWidget = _verticalLayout;

int count1 = 1;
for (int i = 0; i<count1; ++i) {
  ImageView *w = ImageView::create("scrollviewbg.png");
  w->setAnchorPoint(Vec2::ZERO);
  w->setTouchEnabled(true);
  w->setScaleX(2.5);
  w->setTag(i + count1);
  w->addTouchEventListener(CC_CALLBACK_2(HelloWorld::onImageViewClicked, this));
  _verticalLayout->addChild(w);
}

//add HBox into VBox
HBox *hbox = HBox::create();//垂直布局
hbox->setScale(0.8f);
hbox->setTag(101);
_verticalLayout->addChild(hbox);

int count2 = 2;
for (int i = 0; i < count2; ++i) {
  ImageView *w = ImageView::create("scrollviewbg.png");
  w->setAnchorPoint(Vec2(0, 1));
  w->setScaleY(2.0);
  w->setTouchEnabled(true);
  w->setTag(i + count1 + count2);
  w->addTouchEventListener(CC_CALLBACK_2(HelloWorld::onImageViewClicked, this));
  hbox->addChild(w);
}

VBox *innerVBox = VBox::create();
hbox->addChild(innerVBox);//水平布局中加入垂直布局
innerVBox->setTag(102);
// innerVBox->setPassFocusToChild(false);
// innerVBox->setFocusEnabled(false);

int count3 = 2;
for (int i = 0; i<count3; ++i) {
  ImageView *w = ImageView::create("scrollviewbg.png");
  w->setTouchEnabled(true);
  w->setTag(i + count1 + count2 + count3);
  w->addTouchEventListener(CC_CALLBACK_2(HelloWorld::onImageViewClicked, this));
  innerVBox->addChild(w);
}

this->addChild(_verticalLayout);

return true;
}

void HelloWorld::onImageViewClicked(cocos2d::Ref *ref, cocos2d::ui::Widget::TouchEventType touchType)
{
if (touchType == cocos2d::ui::Widget::TouchEventType::ENDED) {
  cocos2d::ui::Widget *w = (cocos2d::ui::Widget*)ref;
  if (w->isFocusEnabled()) {
   w->setFocusEnabled(false);
   w->setColor(Color3B::YELLOW);
  }
  else{
   w->setFocusEnabled(true);
   w->setColor(Color3B::WHITE);
  }
}
}