[2000433]

import java.net.*;
import java.io.*;
import javax.swing.*;
import java.util.regex.*;
import java.util.*;

import java.awt.*;
import java.util.List;

public class main {
  public static void main(String[] args) {
    JFrame frame = new JFrame("A JavaX Frame");
    

    JPanel panel = new JPanel(new GridLayout(2, 1));
    
    final JTextArea textArea = new JTextArea();
    panel.add(new JScrollPane(textArea));
    
    JButton btnBla = new JButton("Bla");
    panel.add(new CenteredLine(btnBla));
    
    
    frame.add(panel);
    frame.setBounds(100, 100, 500, 400);
    frame.setVisible(true);
    exitOnFrameClose(frame);
  }

  static void exitOnFrameClose(JFrame frame) {
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

}
class CenteredLine extends JPanel {
  public CenteredLine(Component... components) {
    setLayout(LetterLayout.centeredRow());
    for (Component component : components)
      add(component);
  }

  public void add(String text) {
    add(new JLabel(text));
  }
}
class LetterLayout implements LayoutManager {
  private String[] lines;
  private Map<String, Component> map = new TreeMap<String, Component>();
  private RC[] rows;
  private RC[] cols;
  private Cell[][] cells;
  private int spacingX = 10, spacingY = 10;
  private int insetTop, insetBottom, insetLeft, insetRight;
  private int template;
  private boolean formWideLeftSide, formWideRightSide;

  private static final int STALACTITE = 1, LEFT_ALIGNED_ROW = 2, CENTERED_ROW = 3, FORM = 4, RIGHT_ALIGNED_ROW = 5;
  private boolean debug;

  public void setLeftBorder(int border) {
    insetLeft = border;
  }

  public void setRightBorder(int border) {
    insetRight = border;
  }

  public static JComponent withBorder(JComponent component, int border) {
    JPanel panel = new JPanel(new LetterLayout("C").setBorder(border));
    panel.add("C", component);
    return panel;
  }

  public static JPanel panel(String... lines) {
    return new JPanel(new LetterLayout(lines));
  }

  public static JPanel stalactitePanel() {
    return new JPanel(stalactite());
  }

  static class DummyComponent extends JComponent {
  }

  /**
   * info about one matrix cell
   */
  static class Cell {
    boolean aux; // part of a larger cell, but not top-left corner
    int minWidth, minHeight;
    Component component;
    int colspan, rowspan;
    double weightX, weightY;
  }

  /**
   * info about one matrix row / column
   */
  static class RC {
    int min;
    double weightSum;
    int start;
    int minEnd;
  }

  private LetterLayout(int template) {
    this.template = template;
  }

  public LetterLayout(String... lines) {
    this.lines = lines;
  }

  public void removeLayoutComponent(Component component) {
    map.values().remove(component);
  }

  public void layoutContainer(Container container) {
    prepareLayout(container);

    // do layout

    if (debug)
      System.out.println("Container size: " + container.getSize());

    Insets insets = getInsets(container);
    for (int r = 0; r < rows.length; r++) {
      for (int i = 0; i < cols.length;) {
        Cell cell = cells[i][r];
        if (cell.aux)
          ++i;
        else {
          if (cell.component != null) {
            int x1 = cols[i].start;
            int y1 = rows[r].start;
            int x2 = i + cell.colspan < cols.length ? cols[i + cell.colspan].start - spacingX : container.getWidth() - insets.right;
            int y2 = r + cell.rowspan < rows.length ? rows[r + cell.rowspan].start - spacingY : container.getHeight() - insets.bottom;

            if (debug)
              System.out.println("Layouting ("+i+", "+r+", " + cell.component.getClass().getName() + "): "+x1+" "+y1+" "+x2+" "+y2);

            cell.component.setBounds(x1, y1, x2 - x1, y2 - y1);
          }
          i += cells[i][r].colspan;
        }
      }
    }
  }

  private void prepareLayout(Container container) {
    applyTemplate(container);

    int numRows = lines.length, numCols = lines[0].length();
    for (int i = 1; i < numRows; i++) if (lines[i].length() != numCols)
      throw new IllegalArgumentException("Lines have varying length");
    cells = new Cell[numCols][numRows];
    rows = new RC[numRows];
    cols = new RC[numCols];

    for (int r = 0; r < numRows; r++) rows[r] = new RC();
    for (int i = 0; i < numCols; i++) cols[i] = new RC();
    for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r] = new Cell();

    // define cells

    for (int r = 0; r < numRows; r++) {
      String line = lines[r];
      for (int i = 0; i < numCols;) {
        Cell cell = cells[i][r];
        if (cell.aux) {
          ++i;
          continue;
        }
        char ch = line.charAt(i);
        int iNext = i;
        do ++iNext; while (iNext < numCols && ch == line.charAt(iNext));
        int rNext = r;
        do ++rNext; while (rNext < numRows && ch == lines[rNext].charAt(i));

        cell.weightX = numCols == 1 || iNext > i + 1 ? 1.0 : 0.0;
        cell.weightY = numRows == 1 || rNext > r + 1 ? 1.0 : 0.0;

        Component c = map.get(String.valueOf(ch));
        cell.component = c;
        if (c != null) {
          cell.minWidth = c.getMinimumSize().width + spacingX;
          cell.minHeight = getMinimumHeight(c) + spacingY;
        }
        cell.colspan = iNext - i;
        cell.rowspan = rNext - r;

        if (cell.colspan == 1)
          cols[i].min = Math.max(cols[i].min, cell.minWidth);
        if (cell.rowspan == 1)
          rows[r].min = Math.max(rows[r].min, cell.minHeight);

        for (int r2 = r; r2 < rNext; r2++)
          for (int i2 = i; i2 < iNext; i2++)
            if (r2 != r || i2 != i)
              cells[i2][r2].aux = true;

        i = iNext;
      }
    }

    // determine minStarts, weightSums

    while (true) {
      for (int i = 0; i < numCols; i++) {
        int minStart = i == 0 ? 0 : cols[i - 1].minEnd;
        double weightStart = i == 0 ? 0.0 : cols[i - 1].weightSum;
        for (int r = 0; r < numRows; r++) {
          Cell cell = cells[i][r];
          if (!cell.aux) {
            RC rc = cols[i + cell.colspan - 1];
            rc.minEnd = Math.max(rc.minEnd, minStart + cell.minWidth);
            rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightX);
          }
        }
      }

      for (int r = 0; r < numRows; r++) {
        int minStart = r == 0 ? 0 : rows[r - 1].minEnd;
        double weightStart = r == 0 ? 0.0 : rows[r - 1].weightSum;
        for (int i = 0; i < numCols; i++) {
          Cell cell = cells[i][r];
          if (!cell.aux) {
            RC rc = rows[r + cell.rowspan - 1];
            rc.minEnd = Math.max(rc.minEnd, minStart + cell.minHeight);
            rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightY);
          }
        }
      }

      if (allWeightsZero(cols)) {
        for (int r = 0; r < numRows; r++)
          for (int i = 0; i < numCols; i++)
            cells[i][r].weightX = 1.0;
        continue;
      }

      if (allWeightsZero(rows)) {
        for (int r = 0; r < numRows; r++)
          for (int i = 0; i < numCols; i++)
            cells[i][r].weightY = 1.0;
        continue;
      }

      break;
    }

    // determine row, col starts

    Insets insets = getInsets(container);
    determineStarts(cols, insets.left, container.getWidth() - insets.left - insets.right + spacingX, spacingX);
    determineStarts(rows, insets.top, container.getHeight() - insets.top - insets.bottom + spacingY, spacingY);
  }

  private boolean allWeightsZero(RC[] rcs) {
    for (int i = 0; i < rcs.length; i++)
      if (rcs[i].weightSum != 0.0)
        return false;
    return true;
  }

  private static int getMinimumHeight(Component c) {
    /*if (c instanceof JTextArea) {
      return (int) ((JTextArea) c).getUI().getRootView((JTextArea) c).getPreferredSpan(javax.swing.text.View.Y_AXIS);
    }*/
    return c.getMinimumSize().height;
  }

  private void applyTemplate(Container container) {
    if (template == STALACTITE) {
      Component[] components = container.getComponents();

      lines = new String[components.length + 2];
      map.clear();
      for (int i = 0; i < components.length; i++) {
        String s = String.valueOf(makeIndexChar(i));
        map.put(s, components[i]);
        lines[i] = s;
      }
      lines[components.length] = lines[components.length + 1] = " ";
    } else if (template == FORM) {
      /* old method of calculating numRows:
      int numRows = 0;
      for (String key : map.keySet()) {
        if (key.length() == 1)
          numRows = Math.max(numRows, Character.toLowerCase(key.charAt(0))-'a');
      }*/
      Component[] components = container.getComponents();
      int numRows = components.length/2;

      lines = new String[numRows+2];
      map.clear();
      for (int row = 0; row < numRows; row++) {
        String lower = String.valueOf(makeIndexChar(row));
        String upper = String.valueOf(makeAlternateIndexChar(row));
        Component rightComponent = components[row * 2 + 1];
        if (rightComponent instanceof DummyComponent)
          upper = lower;
        lines[row] = (formWideLeftSide ? lower + lower : lower) + (formWideRightSide ? upper + upper : upper);
        map.put(lower, components[row*2]);
        if (!(rightComponent instanceof DummyComponent))
          map.put(upper, rightComponent);
      }
      lines[numRows] = lines[numRows+1] = (formWideLeftSide ? "  " : " ") + (formWideRightSide ? "  " : " ");
    } else if (template == LEFT_ALIGNED_ROW) {
      lines = new String[] { makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
    } else if (template == CENTERED_ROW) {
      lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
    } else if (template == RIGHT_ALIGNED_ROW) {
      lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) };
    }
  }

  private String makeSingleRow(Container container) {
    Component[] components = container.getComponents();
    StringBuffer buf = new StringBuffer();
    map.clear();
    for (int i = 0; i < components.length; i++) {
      String s = String.valueOf(makeAlternateIndexChar(i));
      map.put(s, components[i]);
      buf.append(s);
    }
    return buf.toString();
  }

  private static void determineStarts(RC[] rcs, int start, int totalSize, int spacing) {
    int minTotal = rcs[rcs.length - 1].minEnd;
    double weightSum = rcs[rcs.length - 1].weightSum;
    //System.out.println("totalSize="+totalSize+",minTotal="+minTotal+",weightSum="+weightSum);
    int spare = (int) ((totalSize - minTotal) / (weightSum == 0.0 ? 1.0 : weightSum));
    int x = start, minSum = 0;
    double prevWeightSum = 0.0;
    for (int i = 0; i < rcs.length; i++) {
      int width = rcs[i].minEnd - minSum + (int) ((rcs[i].weightSum - prevWeightSum) * spare) - spacing;
      //System.out.println("i="+i+",prevws="+prevWeightSum+",ws="+rcs[i].weightSum+",min="+rcs[i].min+",width="+width);
      rcs[i].start = x;
      x += width + spacing;
      prevWeightSum = rcs[i].weightSum;
      minSum = rcs[i].minEnd;
    }
  }

  public void addLayoutComponent(String s, Component component) {
    map.put(s, component);
  }

  public Dimension minimumLayoutSize(Container container) {
    prepareLayout(container);
    Insets insets = getInsets(container);
    Dimension result = new Dimension(
      insets.left + cols[cols.length - 1].minEnd + insets.right - spacingX,
      insets.top + rows[rows.length - 1].minEnd + insets.bottom - spacingY);
    return result;
  }

  private Insets getInsets(Container container) {
    Insets insets = container.getInsets();
    return new Insets(insets.top + insetTop,
      insets.left + insetLeft,
      insets.bottom + insetBottom,
      insets.right + insetRight);
  }

  public Dimension preferredLayoutSize(Container container) {
    return minimumLayoutSize(container);
  }

  public LetterLayout setSpacing(int x, int y) {
    spacingX = x;
    spacingY = y;
    return this;
  }

  public LetterLayout setSpacing(int spacing) {
    return setSpacing(spacing, spacing);
  }

  public LetterLayout setBorder(int top, int left, int bottom, int right) {
    insetTop = top;
    insetLeft = left;
    insetBottom = bottom;
    insetRight = right;
    return this;
  }

  public LetterLayout setBorder(int inset) {
    return setBorder(inset, inset, inset, inset);
  }

  public LetterLayout setTopBorder(int inset) {
    insetTop = inset;
    return this;
  }

  /**
   * layout components from top to bottom; add components without letters!
   */
  public static LetterLayout stalactite() {
    return new LetterLayout(STALACTITE);
  }

  /**
   * layout components from left to right; add components without letters!
   */
  public static LetterLayout leftAlignedRow() {
    return new LetterLayout(LEFT_ALIGNED_ROW);
  }

  public static LetterLayout leftAlignedRow(int spacing) {
    return leftAlignedRow().setSpacing(spacing);
  }

  /**
   * layout components from left to right, center in container; add components without letters!
   */
  public static LetterLayout centeredRow() {
    return new LetterLayout(CENTERED_ROW);
  }

  public static LetterLayout rightAlignedRow() {
    return new LetterLayout(RIGHT_ALIGNED_ROW);
  }

  public static JPanel rightAlignedRowPanel(JComponent... components) {
    return makePanel(new LetterLayout(RIGHT_ALIGNED_ROW), components);
  }

  private static JPanel makePanel(LetterLayout letterLayout, JComponent[] components) {
    JPanel panel = new JPanel(letterLayout);
    for (JComponent component : components) {
      panel.add(component);
    }
    return panel;
  }

  /**
   * layout components from top to bottom; two components per row
   */
  public static LetterLayout form() {
    LetterLayout letterLayout = new LetterLayout(FORM);
    letterLayout.formWideLeftSide = true;
    letterLayout.formWideRightSide = true;
    return letterLayout;
  }

  /**
   * layout components from top to bottom; two components per row
   * left column is small, right column is wide
   */
  public static LetterLayout formWideRightSide() {
    LetterLayout letterLayout = new LetterLayout(FORM);
    letterLayout.formWideRightSide = true;
    return letterLayout;
  }

  public static Component getDummyComponent() {
    return new DummyComponent();
  }

  public static JPanel newPanel(String... lines) {
    return new JPanel(new LetterLayout(lines));
  }

  public boolean isDebug() {
    return debug;
  }

  public void setDebug(boolean debug) {
    this.debug = debug;
  }

  public static char makeIndexChar(int idx) {
    return (char) ('a' + idx*2);
  }

  public static char makeAlternateIndexChar(int idx) {
    return (char) ('b' + idx*2);
  }

  public static char LEFT_CHAR = ',', RIGHT_CHAR = '.';

  public static void main(String[] args) {
    System.out.println((int) makeIndexChar(0));
    System.out.println((int) makeAlternateIndexChar(0));
    System.out.println((int) makeIndexChar(32000));
    System.out.println((int) makeAlternateIndexChar(32000));
    System.out.println((int) LEFT_CHAR);
    System.out.println((int) RIGHT_CHAR);
  }
}

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Snippet ID:	#2000433
Snippet name:
Eternal ID of this version:	#2000433/1
Text MD5:	427ec6d06dcb45058b6e56e9be1689d2
Author:	someone
Category:
Type:	New Tinybrain snippet
Gummipassword:	expansion-of-635
Uploaded from IP:	176.0.4.89
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2015-07-05 13:23:12
Source code size:	15141 bytes / 494 lines
Pitched / IR pitched:	No / Yes
Views / Downloads:	639 / 148
Referenced in:	[show references]

1	import java.net.*;
2	import java.io.*;
3	import javax.swing.*;
4	import java.util.regex.*;
5	import java.util.*;
6
7	import java.awt.*;
8	import java.util.List;
9
10	public class main {
11	public static void main(String[] args) {
12	JFrame frame = new JFrame("A JavaX Frame");
13
14
15	JPanel panel = new JPanel(new GridLayout(2, 1));
16
17	final JTextArea textArea = new JTextArea();
18	panel.add(new JScrollPane(textArea));
19
20	JButton btnBla = new JButton("Bla");
21	panel.add(new CenteredLine(btnBla));
22
23
24	frame.add(panel);
25	frame.setBounds(100, 100, 500, 400);
26	frame.setVisible(true);
27	exitOnFrameClose(frame);
28	}
29
30	static void exitOnFrameClose(JFrame frame) {
31	frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
32	}
33
34	}
35	class CenteredLine extends JPanel {
36	public CenteredLine(Component... components) {
37	setLayout(LetterLayout.centeredRow());
38	for (Component component : components)
39	add(component);
40	}
41
42	public void add(String text) {
43	add(new JLabel(text));
44	}
45	}
46	class LetterLayout implements LayoutManager {
47	private String[] lines;
48	private Map<String, Component> map = new TreeMap<String, Component>();
49	private RC[] rows;
50	private RC[] cols;
51	private Cell[][] cells;
52	private int spacingX = 10, spacingY = 10;
53	private int insetTop, insetBottom, insetLeft, insetRight;
54	private int template;
55	private boolean formWideLeftSide, formWideRightSide;
56
57	private static final int STALACTITE = 1, LEFT_ALIGNED_ROW = 2, CENTERED_ROW = 3, FORM = 4, RIGHT_ALIGNED_ROW = 5;
58	private boolean debug;
59
60	public void setLeftBorder(int border) {
61	insetLeft = border;
62	}
63
64	public void setRightBorder(int border) {
65	insetRight = border;
66	}
67
68	public static JComponent withBorder(JComponent component, int border) {
69	JPanel panel = new JPanel(new LetterLayout("C").setBorder(border));
70	panel.add("C", component);
71	return panel;
72	}
73
74	public static JPanel panel(String... lines) {
75	return new JPanel(new LetterLayout(lines));
76	}
77
78	public static JPanel stalactitePanel() {
79	return new JPanel(stalactite());
80	}
81
82	static class DummyComponent extends JComponent {
83	}
84
85	/**
86	* info about one matrix cell
87	*/
88	static class Cell {
89	boolean aux; // part of a larger cell, but not top-left corner
90	int minWidth, minHeight;
91	Component component;
92	int colspan, rowspan;
93	double weightX, weightY;
94	}
95
96	/**
97	* info about one matrix row / column
98	*/
99	static class RC {
100	int min;
101	double weightSum;
102	int start;
103	int minEnd;
104	}
105
106	private LetterLayout(int template) {
107	this.template = template;
108	}
109
110	public LetterLayout(String... lines) {
111	this.lines = lines;
112	}
113
114	public void removeLayoutComponent(Component component) {
115	map.values().remove(component);
116	}
117
118	public void layoutContainer(Container container) {
119	prepareLayout(container);
120
121	// do layout
122
123	if (debug)
124	System.out.println("Container size: " + container.getSize());
125
126	Insets insets = getInsets(container);
127	for (int r = 0; r < rows.length; r++) {
128	for (int i = 0; i < cols.length;) {
129	Cell cell = cells[i][r];
130	if (cell.aux)
131	++i;
132	else {
133	if (cell.component != null) {
134	int x1 = cols[i].start;
135	int y1 = rows[r].start;
136	int x2 = i + cell.colspan < cols.length ? cols[i + cell.colspan].start - spacingX : container.getWidth() - insets.right;
137	int y2 = r + cell.rowspan < rows.length ? rows[r + cell.rowspan].start - spacingY : container.getHeight() - insets.bottom;
138
139	if (debug)
140	System.out.println("Layouting ("+i+", "+r+", " + cell.component.getClass().getName() + "): "+x1+" "+y1+" "+x2+" "+y2);
141
142	cell.component.setBounds(x1, y1, x2 - x1, y2 - y1);
143	}
144	i += cells[i][r].colspan;
145	}
146	}
147	}
148	}
149
150	private void prepareLayout(Container container) {
151	applyTemplate(container);
152
153	int numRows = lines.length, numCols = lines[0].length();
154	for (int i = 1; i < numRows; i++) if (lines[i].length() != numCols)
155	throw new IllegalArgumentException("Lines have varying length");
156	cells = new Cell[numCols][numRows];
157	rows = new RC[numRows];
158	cols = new RC[numCols];
159
160	for (int r = 0; r < numRows; r++) rows[r] = new RC();
161	for (int i = 0; i < numCols; i++) cols[i] = new RC();
162	for (int r = 0; r < numRows; r++) for (int i = 0; i < numCols; i++) cells[i][r] = new Cell();
163
164	// define cells
165
166	for (int r = 0; r < numRows; r++) {
167	String line = lines[r];
168	for (int i = 0; i < numCols;) {
169	Cell cell = cells[i][r];
170	if (cell.aux) {
171	++i;
172	continue;
173	}
174	char ch = line.charAt(i);
175	int iNext = i;
176	do ++iNext; while (iNext < numCols && ch == line.charAt(iNext));
177	int rNext = r;
178	do ++rNext; while (rNext < numRows && ch == lines[rNext].charAt(i));
179
180	cell.weightX = numCols == 1 \|\| iNext > i + 1 ? 1.0 : 0.0;
181	cell.weightY = numRows == 1 \|\| rNext > r + 1 ? 1.0 : 0.0;
182
183	Component c = map.get(String.valueOf(ch));
184	cell.component = c;
185	if (c != null) {
186	cell.minWidth = c.getMinimumSize().width + spacingX;
187	cell.minHeight = getMinimumHeight(c) + spacingY;
188	}
189	cell.colspan = iNext - i;
190	cell.rowspan = rNext - r;
191
192	if (cell.colspan == 1)
193	cols[i].min = Math.max(cols[i].min, cell.minWidth);
194	if (cell.rowspan == 1)
195	rows[r].min = Math.max(rows[r].min, cell.minHeight);
196
197	for (int r2 = r; r2 < rNext; r2++)
198	for (int i2 = i; i2 < iNext; i2++)
199	if (r2 != r \|\| i2 != i)
200	cells[i2][r2].aux = true;
201
202	i = iNext;
203	}
204	}
205
206	// determine minStarts, weightSums
207
208	while (true) {
209	for (int i = 0; i < numCols; i++) {
210	int minStart = i == 0 ? 0 : cols[i - 1].minEnd;
211	double weightStart = i == 0 ? 0.0 : cols[i - 1].weightSum;
212	for (int r = 0; r < numRows; r++) {
213	Cell cell = cells[i][r];
214	if (!cell.aux) {
215	RC rc = cols[i + cell.colspan - 1];
216	rc.minEnd = Math.max(rc.minEnd, minStart + cell.minWidth);
217	rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightX);
218	}
219	}
220	}
221
222	for (int r = 0; r < numRows; r++) {
223	int minStart = r == 0 ? 0 : rows[r - 1].minEnd;
224	double weightStart = r == 0 ? 0.0 : rows[r - 1].weightSum;
225	for (int i = 0; i < numCols; i++) {
226	Cell cell = cells[i][r];
227	if (!cell.aux) {
228	RC rc = rows[r + cell.rowspan - 1];
229	rc.minEnd = Math.max(rc.minEnd, minStart + cell.minHeight);
230	rc.weightSum = Math.max(rc.weightSum, weightStart + cell.weightY);
231	}
232	}
233	}
234
235	if (allWeightsZero(cols)) {
236	for (int r = 0; r < numRows; r++)
237	for (int i = 0; i < numCols; i++)
238	cells[i][r].weightX = 1.0;
239	continue;
240	}
241
242	if (allWeightsZero(rows)) {
243	for (int r = 0; r < numRows; r++)
244	for (int i = 0; i < numCols; i++)
245	cells[i][r].weightY = 1.0;
246	continue;
247	}
248
249	break;
250	}
251
252	// determine row, col starts
253
254	Insets insets = getInsets(container);
255	determineStarts(cols, insets.left, container.getWidth() - insets.left - insets.right + spacingX, spacingX);
256	determineStarts(rows, insets.top, container.getHeight() - insets.top - insets.bottom + spacingY, spacingY);
257	}
258
259	private boolean allWeightsZero(RC[] rcs) {
260	for (int i = 0; i < rcs.length; i++)
261	if (rcs[i].weightSum != 0.0)
262	return false;
263	return true;
264	}
265
266	private static int getMinimumHeight(Component c) {
267	/*if (c instanceof JTextArea) {
268	return (int) ((JTextArea) c).getUI().getRootView((JTextArea) c).getPreferredSpan(javax.swing.text.View.Y_AXIS);
269	}*/
270	return c.getMinimumSize().height;
271	}
272
273	private void applyTemplate(Container container) {
274	if (template == STALACTITE) {
275	Component[] components = container.getComponents();
276
277	lines = new String[components.length + 2];
278	map.clear();
279	for (int i = 0; i < components.length; i++) {
280	String s = String.valueOf(makeIndexChar(i));
281	map.put(s, components[i]);
282	lines[i] = s;
283	}
284	lines[components.length] = lines[components.length + 1] = " ";
285	} else if (template == FORM) {
286	/* old method of calculating numRows:
287	int numRows = 0;
288	for (String key : map.keySet()) {
289	if (key.length() == 1)
290	numRows = Math.max(numRows, Character.toLowerCase(key.charAt(0))-'a');
291	}*/
292	Component[] components = container.getComponents();
293	int numRows = components.length/2;
294
295	lines = new String[numRows+2];
296	map.clear();
297	for (int row = 0; row < numRows; row++) {
298	String lower = String.valueOf(makeIndexChar(row));
299	String upper = String.valueOf(makeAlternateIndexChar(row));
300	Component rightComponent = components[row * 2 + 1];
301	if (rightComponent instanceof DummyComponent)
302	upper = lower;
303	lines[row] = (formWideLeftSide ? lower + lower : lower) + (formWideRightSide ? upper + upper : upper);
304	map.put(lower, components[row*2]);
305	if (!(rightComponent instanceof DummyComponent))
306	map.put(upper, rightComponent);
307	}
308	lines[numRows] = lines[numRows+1] = (formWideLeftSide ? " " : " ") + (formWideRightSide ? " " : " ");
309	} else if (template == LEFT_ALIGNED_ROW) {
310	lines = new String[] { makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
311	} else if (template == CENTERED_ROW) {
312	lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) + RIGHT_CHAR + RIGHT_CHAR };
313	} else if (template == RIGHT_ALIGNED_ROW) {
314	lines = new String[] { "" + LEFT_CHAR + LEFT_CHAR + makeSingleRow(container) };
315	}
316	}
317
318	private String makeSingleRow(Container container) {
319	Component[] components = container.getComponents();
320	StringBuffer buf = new StringBuffer();
321	map.clear();
322	for (int i = 0; i < components.length; i++) {
323	String s = String.valueOf(makeAlternateIndexChar(i));
324	map.put(s, components[i]);
325	buf.append(s);
326	}
327	return buf.toString();
328	}
329
330	private static void determineStarts(RC[] rcs, int start, int totalSize, int spacing) {
331	int minTotal = rcs[rcs.length - 1].minEnd;
332	double weightSum = rcs[rcs.length - 1].weightSum;
333	//System.out.println("totalSize="+totalSize+",minTotal="+minTotal+",weightSum="+weightSum);
334	int spare = (int) ((totalSize - minTotal) / (weightSum == 0.0 ? 1.0 : weightSum));
335	int x = start, minSum = 0;
336	double prevWeightSum = 0.0;
337	for (int i = 0; i < rcs.length; i++) {
338	int width = rcs[i].minEnd - minSum + (int) ((rcs[i].weightSum - prevWeightSum) * spare) - spacing;
339	//System.out.println("i="+i+",prevws="+prevWeightSum+",ws="+rcs[i].weightSum+",min="+rcs[i].min+",width="+width);
340	rcs[i].start = x;
341	x += width + spacing;
342	prevWeightSum = rcs[i].weightSum;
343	minSum = rcs[i].minEnd;
344	}
345	}
346
347	public void addLayoutComponent(String s, Component component) {
348	map.put(s, component);
349	}
350
351	public Dimension minimumLayoutSize(Container container) {
352	prepareLayout(container);
353	Insets insets = getInsets(container);
354	Dimension result = new Dimension(
355	insets.left + cols[cols.length - 1].minEnd + insets.right - spacingX,
356	insets.top + rows[rows.length - 1].minEnd + insets.bottom - spacingY);
357	return result;
358	}
359
360	private Insets getInsets(Container container) {
361	Insets insets = container.getInsets();
362	return new Insets(insets.top + insetTop,
363	insets.left + insetLeft,
364	insets.bottom + insetBottom,
365	insets.right + insetRight);
366	}
367
368	public Dimension preferredLayoutSize(Container container) {
369	return minimumLayoutSize(container);
370	}
371
372	public LetterLayout setSpacing(int x, int y) {
373	spacingX = x;
374	spacingY = y;
375	return this;
376	}
377
378	public LetterLayout setSpacing(int spacing) {
379	return setSpacing(spacing, spacing);
380	}
381
382	public LetterLayout setBorder(int top, int left, int bottom, int right) {
383	insetTop = top;
384	insetLeft = left;
385	insetBottom = bottom;
386	insetRight = right;
387	return this;
388	}
389
390	public LetterLayout setBorder(int inset) {
391	return setBorder(inset, inset, inset, inset);
392	}
393
394	public LetterLayout setTopBorder(int inset) {
395	insetTop = inset;
396	return this;
397	}
398
399	/**
400	* layout components from top to bottom; add components without letters!
401	*/
402	public static LetterLayout stalactite() {
403	return new LetterLayout(STALACTITE);
404	}
405
406	/**
407	* layout components from left to right; add components without letters!
408	*/
409	public static LetterLayout leftAlignedRow() {
410	return new LetterLayout(LEFT_ALIGNED_ROW);
411	}
412
413	public static LetterLayout leftAlignedRow(int spacing) {
414	return leftAlignedRow().setSpacing(spacing);
415	}
416
417	/**
418	* layout components from left to right, center in container; add components without letters!
419	*/
420	public static LetterLayout centeredRow() {
421	return new LetterLayout(CENTERED_ROW);
422	}
423
424	public static LetterLayout rightAlignedRow() {
425	return new LetterLayout(RIGHT_ALIGNED_ROW);
426	}
427
428	public static JPanel rightAlignedRowPanel(JComponent... components) {
429	return makePanel(new LetterLayout(RIGHT_ALIGNED_ROW), components);
430	}
431
432	private static JPanel makePanel(LetterLayout letterLayout, JComponent[] components) {
433	JPanel panel = new JPanel(letterLayout);
434	for (JComponent component : components) {
435	panel.add(component);
436	}
437	return panel;
438	}
439
440	/**
441	* layout components from top to bottom; two components per row
442	*/
443	public static LetterLayout form() {
444	LetterLayout letterLayout = new LetterLayout(FORM);
445	letterLayout.formWideLeftSide = true;
446	letterLayout.formWideRightSide = true;
447	return letterLayout;
448	}
449
450	/**
451	* layout components from top to bottom; two components per row
452	* left column is small, right column is wide
453	*/
454	public static LetterLayout formWideRightSide() {
455	LetterLayout letterLayout = new LetterLayout(FORM);
456	letterLayout.formWideRightSide = true;
457	return letterLayout;
458	}
459
460	public static Component getDummyComponent() {
461	return new DummyComponent();
462	}
463
464	public static JPanel newPanel(String... lines) {
465	return new JPanel(new LetterLayout(lines));
466	}
467
468	public boolean isDebug() {
469	return debug;
470	}
471
472	public void setDebug(boolean debug) {
473	this.debug = debug;
474	}
475
476	public static char makeIndexChar(int idx) {
477	return (char) ('a' + idx*2);
478	}
479
480	public static char makeAlternateIndexChar(int idx) {
481	return (char) ('b' + idx*2);
482	}
483
484	public static char LEFT_CHAR = ',', RIGHT_CHAR = '.';
485
486	public static void main(String[] args) {
487	System.out.println((int) makeIndexChar(0));
488	System.out.println((int) makeAlternateIndexChar(0));
489	System.out.println((int) makeIndexChar(32000));
490	System.out.println((int) makeAlternateIndexChar(32000));
491	System.out.println((int) LEFT_CHAR);
492	System.out.println((int) RIGHT_CHAR);
493	}
494	}

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