cocos2d-x3.0 相对布局(一)

2dx中的相对布局和Android中的非常类似，如果之前做过Android应该非常容易上手。

        Size widgetSize = Director::getInstance()->getWinSize();
        
        Text* alert = Text::create("Layout", "fonts/Marker Felt.ttf", 30 );
        alert->setColor(Color3B(159, 168, 176));
        alert->setPosition(Point(widgetSize.width / 2.0f,
                                 widgetSize.height / 2.0f - alert->getSize().height * 3.075f));
        
        addChild(alert);
        
        
        Layout* layout = Layout::create();
        layout->setSize(Size(widgetSize.width, widgetSize.height));
       
        //横向排列，这里类似Android里的线性布局
        layout->setLayoutType(LAYOUT_RELATIVE);
        /*以图片为背景*/
        layout->setBackGroundImageScale9Enabled(true);
        layout->setBackGroundImage("green_edit.png");
        
        layout->setPosition(Point(0,0));
        addChild(layout);
        
        Button* button_TopLeft = Button::create("animationbuttonnormal.png", "animationbuttonpressed.png");
       
        layout->addChild(button_TopLeft);
       
        RelativeLayoutParameter* rp_TopLeft = RelativeLayoutParameter::create();
        rp_TopLeft->setAlign(RELATIVE_ALIGN_PARENT_TOP_LEFT);
        button_TopLeft->setLayoutParameter(rp_TopLeft);
        
        
        //top center horizontal
        Button* button_TopCenter = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_TopCenter);
        
        RelativeLayoutParameter* rp_TopCenter = RelativeLayoutParameter::create();
        rp_TopCenter->setAlign(RELATIVE_ALIGN_PARENT_TOP_CENTER_HORIZONTAL);
        button_TopCenter->setLayoutParameter(rp_TopCenter);
        
        Button* button_TopRight = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_TopRight);
        
        RelativeLayoutParameter* rp_TopRight = RelativeLayoutParameter::create();
        rp_TopRight->setAlign(RELATIVE_ALIGN_PARENT_TOP_RIGHT);
        button_TopRight->setLayoutParameter(rp_TopRight);
        
        
        //left center
        Button* button_LeftCenter = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_LeftCenter);
        
        RelativeLayoutParameter* rp_LeftCenter = RelativeLayoutParameter::create();
        rp_LeftCenter->setAlign(RELATIVE_ALIGN_PARENT_LEFT_CENTER_VERTICAL);
        button_LeftCenter->setLayoutParameter(rp_LeftCenter);
        
        //center
        Button* buttonCenter = Button::create("animationbuttonnormal.png","animationbuttonnormal.png");
        layout->addChild(buttonCenter);
        
        RelativeLayoutParameter* rpCenter = RelativeLayoutParameter::create();
        rpCenter->setAlign(RELATIVE_CENTER_IN_PARENT);
        buttonCenter->setLayoutParameter(rpCenter);
        
        Button* button_RightCenter = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_RightCenter);
        
        RelativeLayoutParameter* rp_RightCenter = RelativeLayoutParameter::create();
        rp_RightCenter->setAlign(RELATIVE_ALIGN_PARENT_RIGHT_CENTER_VERTICAL);
        button_RightCenter->setLayoutParameter(rp_RightCenter);
        
        //left bottom
        Button* button_LeftBottom = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_LeftBottom);
        
        RelativeLayoutParameter* rp_LeftBottom = RelativeLayoutParameter::create();
        rp_LeftBottom->setAlign(RELATIVE_ALIGN_PARENT_LEFT_BOTTOM);
        button_LeftBottom->setLayoutParameter(rp_LeftBottom);
        
        
        //bottom center
        Button* button_BottomCenter = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_BottomCenter);
        
        RelativeLayoutParameter* rp_BottomCenter = RelativeLayoutParameter::create();
        rp_BottomCenter->setAlign(RELATIVE_ALIGN_PARENT_BOTTOM_CENTER_HORIZONTAL);
        button_BottomCenter->setLayoutParameter(rp_BottomCenter);
        
        Button* button_RightBottom = Button::create("animationbuttonnormal.png","animationbuttonpressed.png");
        layout->addChild(button_RightBottom);
        
        RelativeLayoutParameter* rp_RightBottom = RelativeLayoutParameter::create();
        rp_RightBottom->setAlign(RELATIVE_ALIGN_PARENT_RIGHT_BOTTOM);
        button_RightBottom->setLayoutParameter(rp_RightBottom);