Java布局管理器的具体实现 - 编程入门网
作者 佚名技术
来源 NET编程
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发布时间 2012-07-04
| ner.getTreeLock()){ Dimension dimension1=new Dimension(0,0); int i=container.getComponentCount(); for(int j=0;j Component component = container.getComponent(j); if(component.isVisible()){ Dimension dimension2=component.getPreferredSize (); dimension1.width=Math.max (dimension1.width,dimension2.width); if(j>0) dimension1.height+=vgap; dimension1.height+=dimension2.height; } } Insets insets=container.getInsets(); dimension1.height+=insets.top+insets.bottom+vgap*2; dimension1.width+=insets.left+insets.right+hgap*2; Dimension dimension=dimension1; return dimension; file://return(new Dimension(50,200)); } } public Dimension minimumLayoutSize(Container container){ synchronized(container.getTreeLock()){ Dimension dimension1=new Dimension(0,0); int i=container.getComponentCount(); for(int j=0;j Component component = container.getComponent(j); if(component.isVisible()){ Dimension dimension2=component.getMinimumSize(); dimension1.width=Math.max (dimension1.width,dimension2.width); if(j>0) dimension1.height+=vgap; dimension1.height+=dimension2.height; } } Insets insets=container.getInsets(); dimension1.height+=insets.top+insets.bottom+vgap*2; dimension1.width+=insets.left+insets.right+hgap*2; Dimension dimension=dimension1; return dimension; } } public void layoutContainer(Container container){ synchronized(container.getTreeLock()){ Insets insets=container.getInsets(); int vSpace=container.getSize().height- (insets.top+insets.bottom+vgap*2); int componentCount=container.getComponentCount(); int left=insets.left+hgap; int totalHeight=0; int width=0; int componentStart=0; for(int i=0;i Component component=container.getComponent(i); if(component.isVisible()){ Dimension dimension=component.getPreferredSize(); component.setSize(dimension.width,dimension.height); if(totalHeight==0 || totalHeight+dimension.height<=vSpace){ if(totalHeight>0) totalHeight+=vgap; totalHeight+=dimension.height; width=Math.max(width,dimension.width); }else{ moveComponents (container,insets.top+vgap,left,width,componentStart,i); totalHeight=0; left+=hgap+width; width=dimension.width; componentStart=i; } } } moveComponents |
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