Version 15, March 2013

[GpsPrune.git] / tim / prune / gui / GuiGridLayout.java

diff --git a/tim/prune/gui/GuiGridLayout.java b/tim/prune/gui/GuiGridLayout.java
index cb3572b7b2dcdcfe14ead8c516af5b58d827a722..703f7dd1d1be00f6cca07525fe54ae28e9db125f 100644 (file)
--- a/tim/prune/gui/GuiGridLayout.java
+++ b/tim/prune/gui/GuiGridLayout.java
@@ -8,14 +8,17 @@ import javax.swing.JComponent;
 import javax.swing.JPanel;
 
 /**
- * Class to make it easier to use GridBagLayout
- * for a two-column, non-equal-width layout
+ * Class to make it easier to use GridBagLayout for a non-equal-width layout
+ * Default is two columns but can handle more
  */
 public class GuiGridLayout
 {
        private GridBagLayout _layout = null;
        private GridBagConstraints _constraints = null;
        private JPanel _panel = null;
+       private int _numColumns = 0;
+       private double[] _colWeights = null;
+       private boolean[] _rightAligns = null;
        private int _x = 0;
        private int _y = 0;
 
@@ -24,10 +27,31 @@ public class GuiGridLayout
         * @param inPanel panel using layout
         */
        public GuiGridLayout(JPanel inPanel)
+       {
+               // Default is two columns, with more weight to the right-hand one; first column is right-aligned
+               this(inPanel, null, null);
+       }
+
+       /**
+        * Constructor
+        * @param inPanel panel using layout
+        * @param inColumnWeights array of column weights
+        * @param inAlignRights array of booleans, true for right alignment, false for left
+        */
+       public GuiGridLayout(JPanel inPanel, double[] inColumnWeights, boolean[] inAlignRights)
        {
                _panel = inPanel;
                _layout = new GridBagLayout();
                _constraints = new GridBagConstraints();
+               _colWeights = inColumnWeights;
+               _rightAligns = inAlignRights;
+               if (_colWeights == null || _rightAligns == null || _colWeights.length != _rightAligns.length
+                       || _colWeights.length < 2)
+               {
+                       _colWeights = new double[] {0.5, 1.0};
+                       _rightAligns = new boolean[] {true, false};
+               }
+               _numColumns = _colWeights.length;
                _constraints.weightx = 1.0;
                _constraints.weighty = 0.0;
                _constraints.ipadx = 10;
@@ -45,17 +69,25 @@ public class GuiGridLayout
        {
                _constraints.gridx = _x;
                _constraints.gridy = _y;
-               _constraints.weightx = (_x==0?0.5:1.0);
+               _constraints.weightx = _colWeights[_x];
                // set anchor
-               _constraints.anchor = (_x == 0?GridBagConstraints.LINE_END:GridBagConstraints.LINE_START);
+               _constraints.anchor = (_rightAligns[_x]?GridBagConstraints.LINE_END:GridBagConstraints.LINE_START);
                _layout.setConstraints(inComponent, _constraints);
                // add to panel
                _panel.add(inComponent);
                // work out next position
                _x++;
-               if (_x > 1) {
-                       _x = 0;
-                       _y++;
+               if (_x >= _numColumns) {
+                       nextRow();
                }
        }
+
+       /**
+        * Go to the next row of the grid
+        */
+       public void nextRow()
+       {
+               _x = 0;
+               _y++;
+       }
 }