comparison src/samer/core_/util/StackLayout.java @ 0:bf79fb79ee13

Initial Mercurial check in.

+/*
+ *	StackLayout.java	
+ *
+ *	Copyright (c) 2000, Samer Abdallah, King's College London.
+ *	All rights reserved.
+ *
+ *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
+ *	without even the implied warranty of MERCHANTABILITY or 
+ *	FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+package samer.core.util;
+import java.awt.*;
+
+/**
+	This layout manager stacks everything up vertically
+	letting each component assume it's preferred height,
+	but stretching them all out to fill the width available.
+	The preferred width is the height of the widest
+	component
+ */
+
+public class StackLayout implements LayoutManager, java.io.Serializable
+{
+	private int		gap;
+
+	public StackLayout() { gap=0; }
+	public StackLayout(int a) { gap=a; }
+	public void setGap(int a) { gap=a; }
+	public int  getGap(int a) { return gap; }
+
+	public void addLayoutComponent(String name, Component comp) {}
+	public void removeLayoutComponent(Component comp) {}
+
+	public Dimension preferredLayoutSize(Container parent)
+	{
+		Component[] c=parent.getComponents();
+		Dimension	d1=new Dimension(0,0), d2;
+
+		int	n=c.length;
+		for (int i=0; i<n; i++) {
+			d2 = c[i].getPreferredSize();
+			d1.height += d2.height;
+			d1.width  = Math.max(d1.width,d2.width);
+		}
+
+		if (n>1) d1.height += (n-1)*gap;
+
+		Insets		insets=parent.getInsets();
+		d1.width  += insets.left + insets.right;
+		d1.height += insets.top + insets.bottom;
+
+		return d1;
+	}
+
+	public Dimension minimumLayoutSize(Container parent) 
+	{
+		Component[] c=parent.getComponents();
+		Dimension	d1=new Dimension(0,0), d2;
+
+		int	n=c.length;
+		for (int i=0; i<n; i++) {
+			d2 = c[i].getMinimumSize();
+			d1.height += d2.height;
+			d1.width  = Math.max(d1.width,d2.width);
+		}
+
+		if (n>1) d1.height += (n-1)*gap;
+
+		Insets		insets=parent.getInsets();
+		d1.width  += insets.left + insets.right;
+		d1.height += insets.top + insets.bottom;
+
+		return d1;
+	}
+
+	public void layoutContainer(Container parent)
+	{
+		Component[] c=parent.getComponents();
+		Insets		insets=parent.getInsets();
+		int			x, y, w;
+		Dimension	p=parent.getSize(), d;
+
+		w = p.width - (insets.left+insets.right);
+		x = insets.left;
+		y = insets.top;
+
+		int	n=c.length;
+		for (int i=0; i<n; i++) {
+			d = c[i].getPreferredSize();
+			c[i].setBounds(x,y,w,d.height);
+			y += d.height + gap;
+		}
+	}
+}