VerticalFlowLayout.java

Go to the documentation of this file.

import java.awt.*;

public class VerticalFlowLayout extends FlowLayout {
    int wrapWidth = 0;
    public VerticalFlowLayout(int i, int j, int k) {
        super(i,j,k);
    }
    public int getWrapWidth(Container container) {
        if (wrapWidth!=0) return wrapWidth;
        Component parent = container.getParent();
        if (parent!=null) return parent.getSize().width;
        return 0;
    }
    public Dimension preferredLayoutSize(Container container) {
        Dimension dimension2;
        synchronized(container.getTreeLock())
        {
            int hgap = getHgap();
            int vgap = getHgap();
            int wrapWidth = getWrapWidth(container);
            Dimension dimension = new Dimension(0, 0);
            Dimension line = new Dimension(0,0);
            int i = container.getComponentCount();
            boolean firstInLine = true;
            for(int j = 0; j < i; j++)
            {
                Component component = container.getComponent(j);
                if(component.isVisible())
                {
                    Dimension compSize = component.getPreferredSize();
                    //System.out.println(j+" "+compSize+" "+firstInLine+" "+wrapWidth);
                    Dimension oldLine = new Dimension(line);
                    boolean oldFirstInLine = firstInLine;
                    line.height = Math.max(line.height, compSize.height);
                    if(firstInLine)
                        firstInLine = false;
                    else
                        line.width += hgap;
                    line.width += compSize.width;
                    if (line.width > wrapWidth && !oldFirstInLine) {
                        dimension.height += vgap + oldLine.height;
                        dimension.width += Math.max(dimension.width,oldLine.width);
                        line = new Dimension(0,0); firstInLine = true;
                        j--;
                    }
                }
            }
            if (!firstInLine) {
                dimension.height += vgap + line.height;
                dimension.width += Math.max(dimension.width,line.width);
            }

            Insets insets = container.getInsets();
            dimension.width += insets.left + insets.right + hgap * 2;
            dimension.height += insets.top + insets.bottom + vgap * 2;
            dimension2 = dimension;
        }
        return dimension2;
    }
    /*    public Dimension maximumLayoutSize(Container container) {
        return preferredLayoutSize(container);
        }*/
    public Dimension oldpreferredLayoutSize(Container container)
    {
        Dimension dimension2;
        int hgap = getHgap();
        int vgap = getHgap();
        synchronized(container.getTreeLock())
        {
            Dimension dimension = new Dimension(0, 0);
            int i = container.getComponentCount();
            boolean flag = true;
            for(int j = 0; j < i; j++)
            {
                Component component = container.getComponent(j);
                if(component.isVisible())
                {
                    Dimension dimension1 = component.getPreferredSize();
                    dimension.height = Math.max(dimension.height, dimension1.height);
                    if(flag)
                        flag = false;
                    else
                        dimension.width += hgap;
                    dimension.width += dimension1.width;
                }
            }

            Insets insets = container.getInsets();
            dimension.width += insets.left + insets.right + hgap * 2;
            dimension.height += insets.top + insets.bottom + vgap * 2;
            dimension2 = dimension;
        }
        return dimension2;
    }
}

---