GBC类

学习中需要的类，自己慢慢积攒中！

GBC类继承于GridBagConstraints这样做的目的是简化每次对GridBagConstraints对象的直接操作带来的繁琐，而GBC的各个set方法返回的都是一个GBC对象因此可以接连调用set方法。

public class GBC extends GridBagConstraints

{

  //初始化左上角位置

  public GBC(int gridx, int gridy)

  {

     this.gridx = gridx;

     this.gridy = gridy;

  }

  //初始化左上角位置和所占行数和列数

  public GBC(int gridx, int gridy, int gridwidth, int gridheight)

  {

     this.gridx = gridx;

     this.gridy = gridy;

     this.gridwidth = gridwidth;

     this.gridheight = gridheight;

  }

  //对齐方式

  public GBC setAnchor(int anchor)

  {

     this.anchor = anchor;

     return this;

  }

  //是否拉伸及拉伸方向

  public GBC setFill(int fill)

  {

     this.fill = fill;

     return this;

  }

  //x和y方向上的增量

  public GBC setWeight(double weightx, double weighty)

  {

     this.weightx = weightx;

     this.weighty = weighty;

     return this;

  }

  //外部填充

  public GBC setInsets(int distance)

  {

     this.insets = new Insets(distance, distance, distance, distance);

     return this;

  }

  //外填充

  public GBC setInsets(int top, int left, int bottom, int right)

  {

     this.insets = new Insets(top, left, bottom, right);

     return this;

  }

  //内填充

  public GBC setIpad(int ipadx, int ipady)

  {

     this.ipadx = ipadx;

     this.ipady = ipady;

     return this;

  }

}