Attachment 199556 Details for Bug 351935 – modyfied GridLayout to work with index

modyfied GridLayout to work with index

GridLayout.java (text/x-java-source), 25.58 KB, created by Ludwig Moser

on 2011-07-13 05:46:14 EDT

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Filename:

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Creator: Ludwig Moser

Created: 2011-07-13 05:46:14 EDT

Size: 25.58 KB

patch

obsolete

>package listTests.layout;
>
>import java.util.Arrays;
>
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.graphics.Point;
>import org.eclipse.swt.graphics.Rectangle;
>import org.eclipse.swt.widgets.Composite;
>import org.eclipse.swt.widgets.Control;
>import org.eclipse.swt.widgets.Layout;
>import org.eclipse.swt.widgets.Scrollable;
>
>/**
> * Instances of this class lay out the control children of a
> * <code>Composite</code> in a grid.
> * <p>
> * <code>GridLayout</code> has a number of configuration fields, and the
> * controls it lays out can have an associated layout data object, called
> * <code>GridData</code>. The power of <code>GridLayout</code> lies in the
> * ability to configure <code>GridData</code> for each control in the layout.
> * </p>
> * <p>
> * The following code creates a shell managed by a <code>GridLayout</code> with
> * 3 columns:
> * 
> * <pre>
> * Display display = new Display();
> * Shell shell = new Shell(display);
> * GridLayout gridLayout = new GridLayout();
> * gridLayout.numColumns = 3;
> * shell.setLayout(gridLayout);
> * </pre>
> * 
> * The <code>numColumns</code> field is the most important field in a
> * <code>GridLayout</code>. Widgets are laid out in columns from left to right,
> * and a new row is created when <code>numColumns</code> + 1 controls are added
> * to the <code>Composite<code>.
> * </p>
> * 
> * @see GridData
> * @see <a href="http://www.eclipse.org/swt/snippets/#gridlayout">GridLayout
> *      snippets</a>
> * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example:
> *      LayoutExample</a>
> * @see <a href="http://www.eclipse.org/swt/">Sample code and further
> *      information</a>
> */
>public final class GridLayout extends Layout /* implements PropertyChangeListener */{
>
>	/**
>	 * numColumns specifies the number of cell columns in the layout. If
>	 * numColumns has a value less than 1, the layout will not set the size and
>	 * position of any controls.
>	 * 
>	 * The default value is 1.
>	 */
>	public int numColumns = 1;
>
>	/**
>	 * makeColumnsEqualWidth specifies whether all columns in the layout will be
>	 * forced to have the same width.
>	 * 
>	 * The default value is false.
>	 */
>	public boolean makeColumnsEqualWidth = false;
>
>	/**
>	 * marginWidth specifies the number of pixels of horizontal margin that will
>	 * be placed along the left and right edges of the layout.
>	 * 
>	 * The default value is 5.
>	 */
>	public int marginWidth = 5;
>
>	/**
>	 * marginHeight specifies the number of pixels of vertical margin that will
>	 * be placed along the top and bottom edges of the layout.
>	 * 
>	 * The default value is 5.
>	 */
>	public int marginHeight = 5;
>
>	/**
>	 * marginLeft specifies the number of pixels of horizontal margin that will
>	 * be placed along the left edge of the layout.
>	 * 
>	 * The default value is 0.
>	 * 
>	 * @since 3.1
>	 */
>	public int marginLeft = 0;
>
>	/**
>	 * marginTop specifies the number of pixels of vertical margin that will be
>	 * placed along the top edge of the layout.
>	 * 
>	 * The default value is 0.
>	 * 
>	 * @since 3.1
>	 */
>	public int marginTop = 0;
>
>	/**
>	 * marginRight specifies the number of pixels of horizontal margin that will
>	 * be placed along the right edge of the layout.
>	 * 
>	 * The default value is 0.
>	 * 
>	 * @since 3.1
>	 */
>	public int marginRight = 0;
>
>	/**
>	 * marginBottom specifies the number of pixels of vertical margin that will
>	 * be placed along the bottom edge of the layout.
>	 * 
>	 * The default value is 0.
>	 * 
>	 * @since 3.1
>	 */
>	public int marginBottom = 0;
>
>	/**
>	 * horizontalSpacing specifies the number of pixels between the right edge
>	 * of one cell and the left edge of its neighbouring cell to the right.
>	 * 
>	 * The default value is 5.
>	 */
>	public int horizontalSpacing = 5;
>
>	/**
>	 * verticalSpacing specifies the number of pixels between the bottom edge of
>	 * one cell and the top edge of its neighbouring cell underneath.
>	 * 
>	 * The default value is 5.
>	 */
>	public int verticalSpacing = 5;
>
>	/**
>	 * Constructs a new instance of this class.
>	 */
>	public GridLayout() {
>	}
>
>	/**
>	 * Constructs a new instance of this class given the number of columns, and
>	 * whether or not the columns should be forced to have the same width. If
>	 * numColumns has a value less than 1, the layout will not set the size and
>	 * position of any controls.
>	 * 
>	 * @param numColumns
>	 *            the number of columns in the grid
>	 * @param makeColumnsEqualWidth
>	 *            whether or not the columns will have equal width
>	 * 
>	 * @since 2.0
>	 */
>	public GridLayout(int numColumns, boolean makeColumnsEqualWidth) {
>		this.numColumns = numColumns;
>		this.makeColumnsEqualWidth = makeColumnsEqualWidth;
>	}
>
>	protected Point computeSize(Composite composite, int wHint, int hHint,
>			boolean flushCache) {
>		Point size = layout(composite, false, 0, 0, wHint, hHint, flushCache);
>		if (wHint != SWT.DEFAULT)
>			size.x = wHint;
>		if (hHint != SWT.DEFAULT)
>			size.y = hHint;
>		return size;
>	}
>
>	protected boolean flushCache(Control control) {
>		Object data = control.getLayoutData();
>		if (data != null)
>			((GridData) data).flushCache();
>		return true;
>	}
>
>	GridData getData(Control[][] grid, int row, int column, int rowCount,
>			int columnCount, boolean first) {
>		Control control = grid[row][column];
>		if (control != null) {
>			GridData data = (GridData) control.getLayoutData();
>			int hSpan = Math.max(1, Math.min(data.horizontalSpan, columnCount));
>			int vSpan = Math.max(1, data.verticalSpan);
>			int i = first ? row + vSpan - 1 : row - vSpan + 1;
>			int j = first ? column + hSpan - 1 : column - hSpan + 1;
>			if (0 <= i && i < rowCount) {
>				if (0 <= j && j < columnCount) {
>					if (control == grid[i][j])
>						return data;
>				}
>			}
>		}
>		return null;
>	}
>
>	protected void layout(Composite composite, boolean flushCache) {
>		Rectangle rect = composite.getClientArea();
>		layout(composite, true, rect.x, rect.y, rect.width, rect.height,
>				flushCache);
>	}
>
>	Point layout(Composite composite, boolean move, int x, int y, int width,
>			int height, boolean flushCache) {
>		if (numColumns < 1) {
>			return new Point(marginLeft + marginWidth * 2 + marginRight,
>					marginTop + marginHeight * 2 + marginBottom);
>		}
>		Control[] children = composite.getChildren();
>
>		int count = 0;
>		for (int i = 0; i < children.length; i++) {
>			Control control = children[i];
>			GridData data = (GridData) control.getLayoutData();
>			if (data != null) {
>				children[i].setVisible(!data.exclude);
>				if (!data.exclude) {
>					children[count++] = children[i];
>				}
>			}
>		}
>
>		Arrays.sort(children, new GridLayoutComparator());
>
>		if (count == 0) {
>			return new Point(marginLeft + marginWidth * 2 + marginRight,
>					marginTop + marginHeight * 2 + marginBottom);
>		}
>		for (int i = 0; i < count; i++) {
>			Control child = children[i];
>			GridData data = (GridData) child.getLayoutData();
>			if (flushCache) {
>				data.flushCache();
>			}
>			data.computeSize(child, data.widthHint, data.heightHint, flushCache);
>			if (data.grabExcessHorizontalSpace && data.minimumWidth > 0) {
>				if (data.cacheWidth < data.minimumWidth) {
>					int trim = 0;
>					// TEMPORARY CODE
>					if (child instanceof Scrollable) {
>						Rectangle rect = ((Scrollable) child).computeTrim(0, 0,
>								0, 0);
>						trim = rect.width;
>					} else {
>						trim = child.getBorderWidth() * 2;
>					}
>					data.cacheWidth = data.cacheHeight = SWT.DEFAULT;
>					data.computeSize(child,
>							Math.max(0, data.minimumWidth - trim),
>							data.heightHint, false);
>				}
>			}
>			if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
>				data.cacheHeight = Math.max(data.cacheHeight,
>						data.minimumHeight);
>			}
>		}
>
>		/* Build the grid */
>		int row = 0, column = 0, rowCount = 0, columnCount = numColumns;
>		Control[][] grid = new Control[4][columnCount];
>		for (int i = 0; i < count; i++) {
>			Control child = children[i];
>			GridData data = (GridData) child.getLayoutData();
>			int hSpan = Math.max(1, Math.min(data.horizontalSpan, columnCount));
>			int vSpan = Math.max(1, data.verticalSpan);
>			while (true) {
>				int lastRow = row + vSpan;
>				if (lastRow >= grid.length) {
>					Control[][] newGrid = new Control[lastRow + 4][columnCount];
>					System.arraycopy(grid, 0, newGrid, 0, grid.length);
>					grid = newGrid;
>				}
>				if (grid[row] == null) {
>					grid[row] = new Control[columnCount];
>				}
>				while (column < columnCount && grid[row][column] != null) {
>					column++;
>				}
>				int endCount = column + hSpan;
>				if (endCount <= columnCount) {
>					int index = column;
>					while (index < endCount && grid[row][index] == null) {
>						index++;
>					}
>					if (index == endCount)
>						break;
>					column = index;
>				}
>				if (column + hSpan >= columnCount) {
>					column = 0;
>					row++;
>				}
>			}
>			for (int j = 0; j < vSpan; j++) {
>				if (grid[row + j] == null) {
>					grid[row + j] = new Control[columnCount];
>				}
>				for (int k = 0; k < hSpan; k++) {
>					grid[row + j][column + k] = child;
>				}
>			}
>			rowCount = Math.max(rowCount, row + vSpan);
>			column += hSpan;
>		}
>
>		/* Column widths */
>		int availableWidth = width - horizontalSpacing * (columnCount - 1)
>				- (marginLeft + marginWidth * 2 + marginRight);
>		int expandCount = 0;
>		int[] widths = new int[columnCount];
>		int[] minWidths = new int[columnCount];
>		boolean[] expandColumn = new boolean[columnCount];
>		for (int j = 0; j < columnCount; j++) {
>			for (int i = 0; i < rowCount; i++) {
>				GridData data = getData(grid, i, j, rowCount, columnCount, true);
>				if (data != null) {
>					int hSpan = Math.max(1,
>							Math.min(data.horizontalSpan, columnCount));
>					if (hSpan == 1) {
>						int w = data.cacheWidth + data.horizontalIndent;
>						widths[j] = Math.max(widths[j], w);
>						if (data.grabExcessHorizontalSpace) {
>							if (!expandColumn[j])
>								expandCount++;
>							expandColumn[j] = true;
>						}
>						if (!data.grabExcessHorizontalSpace
>								|| data.minimumWidth != 0) {
>							w = !data.grabExcessHorizontalSpace
>									|| data.minimumWidth == SWT.DEFAULT ? data.cacheWidth
>									: data.minimumWidth;
>							w += data.horizontalIndent;
>							minWidths[j] = Math.max(minWidths[j], w);
>						}
>					}
>				}
>			}
>			for (int i = 0; i < rowCount; i++) {
>				GridData data = getData(grid, i, j, rowCount, columnCount,
>						false);
>				if (data != null) {
>					int hSpan = Math.max(1,
>							Math.min(data.horizontalSpan, columnCount));
>					if (hSpan > 1) {
>						int spanWidth = 0, spanMinWidth = 0, spanExpandCount = 0;
>						for (int k = 0; k < hSpan; k++) {
>							spanWidth += widths[j - k];
>							spanMinWidth += minWidths[j - k];
>							if (expandColumn[j - k])
>								spanExpandCount++;
>						}
>						if (data.grabExcessHorizontalSpace
>								&& spanExpandCount == 0) {
>							expandCount++;
>							expandColumn[j] = true;
>						}
>						int w = data.cacheWidth + data.horizontalIndent
>								- spanWidth - (hSpan - 1) * horizontalSpacing;
>						if (w > 0) {
>							if (makeColumnsEqualWidth) {
>								int equalWidth = (w + spanWidth) / hSpan;
>								int remainder = (w + spanWidth) % hSpan, last = -1;
>								for (int k = 0; k < hSpan; k++) {
>									widths[last = j - k] = Math.max(equalWidth,
>											widths[j - k]);
>								}
>								if (last > -1)
>									widths[last] += remainder;
>							} else {
>								if (spanExpandCount == 0) {
>									widths[j] += w;
>								} else {
>									int delta = w / spanExpandCount;
>									int remainder = w % spanExpandCount, last = -1;
>									for (int k = 0; k < hSpan; k++) {
>										if (expandColumn[j - k]) {
>											widths[last = j - k] += delta;
>										}
>									}
>									if (last > -1)
>										widths[last] += remainder;
>								}
>							}
>						}
>						if (!data.grabExcessHorizontalSpace
>								|| data.minimumWidth != 0) {
>							w = !data.grabExcessHorizontalSpace
>									|| data.minimumWidth == SWT.DEFAULT ? data.cacheWidth
>									: data.minimumWidth;
>							w += data.horizontalIndent - spanMinWidth
>									- (hSpan - 1) * horizontalSpacing;
>							if (w > 0) {
>								if (spanExpandCount == 0) {
>									minWidths[j] += w;
>								} else {
>									int delta = w / spanExpandCount;
>									int remainder = w % spanExpandCount, last = -1;
>									for (int k = 0; k < hSpan; k++) {
>										if (expandColumn[j - k]) {
>											minWidths[last = j - k] += delta;
>										}
>									}
>									if (last > -1)
>										minWidths[last] += remainder;
>								}
>							}
>						}
>					}
>				}
>			}
>		}
>		if (makeColumnsEqualWidth) {
>			int minColumnWidth = 0;
>			int columnWidth = 0;
>			for (int i = 0; i < columnCount; i++) {
>				minColumnWidth = Math.max(minColumnWidth, minWidths[i]);
>				columnWidth = Math.max(columnWidth, widths[i]);
>			}
>			columnWidth = width == SWT.DEFAULT || expandCount == 0 ? columnWidth
>					: Math.max(minColumnWidth, availableWidth / columnCount);
>			for (int i = 0; i < columnCount; i++) {
>				expandColumn[i] = expandCount > 0;
>				widths[i] = columnWidth;
>			}
>		} else {
>			if (width != SWT.DEFAULT && expandCount > 0) {
>				int totalWidth = 0;
>				for (int i = 0; i < columnCount; i++) {
>					totalWidth += widths[i];
>				}
>				int c = expandCount;
>				int delta = (availableWidth - totalWidth) / c;
>				int remainder = (availableWidth - totalWidth) % c;
>				int last = -1;
>				while (totalWidth != availableWidth) {
>					for (int j = 0; j < columnCount; j++) {
>						if (expandColumn[j]) {
>							if (widths[j] + delta > minWidths[j]) {
>								widths[last = j] = widths[j] + delta;
>							} else {
>								widths[j] = minWidths[j];
>								expandColumn[j] = false;
>								c--;
>							}
>						}
>					}
>					if (last > -1)
>						widths[last] += remainder;
>
>					for (int j = 0; j < columnCount; j++) {
>						for (int i = 0; i < rowCount; i++) {
>							GridData data = getData(grid, i, j, rowCount,
>									columnCount, false);
>							if (data != null) {
>								int hSpan = Math.max(1, Math.min(
>										data.horizontalSpan, columnCount));
>								if (hSpan > 1) {
>									if (!data.grabExcessHorizontalSpace
>											|| data.minimumWidth != 0) {
>										int spanWidth = 0, spanExpandCount = 0;
>										for (int k = 0; k < hSpan; k++) {
>											spanWidth += widths[j - k];
>											if (expandColumn[j - k])
>												spanExpandCount++;
>										}
>										int w = !data.grabExcessHorizontalSpace
>												|| data.minimumWidth == SWT.DEFAULT ? data.cacheWidth
>												: data.minimumWidth;
>										w += data.horizontalIndent - spanWidth
>												- (hSpan - 1)
>												* horizontalSpacing;
>										if (w > 0) {
>											if (spanExpandCount == 0) {
>												widths[j] += w;
>											} else {
>												int delta2 = w
>														/ spanExpandCount;
>												int remainder2 = w
>														% spanExpandCount, last2 = -1;
>												for (int k = 0; k < hSpan; k++) {
>													if (expandColumn[j - k]) {
>														widths[last2 = j - k] += delta2;
>													}
>												}
>												if (last2 > -1)
>													widths[last2] += remainder2;
>											}
>										}
>									}
>								}
>							}
>						}
>					}
>					if (c == 0)
>						break;
>					totalWidth = 0;
>					for (int i = 0; i < columnCount; i++) {
>						totalWidth += widths[i];
>					}
>					delta = (availableWidth - totalWidth) / c;
>					remainder = (availableWidth - totalWidth) % c;
>					last = -1;
>				}
>			}
>		}
>
>		/* Wrapping */
>		GridData[] flush = null;
>		int flushLength = 0;
>		if (width != SWT.DEFAULT) {
>			for (int j = 0; j < columnCount; j++) {
>				for (int i = 0; i < rowCount; i++) {
>					GridData data = getData(grid, i, j, rowCount, columnCount,
>							false);
>					if (data != null) {
>						if (data.heightHint == SWT.DEFAULT) {
>							Control child = grid[i][j];
>							// TEMPORARY CODE
>							int hSpan = Math.max(1,
>									Math.min(data.horizontalSpan, columnCount));
>							int currentWidth = 0;
>							for (int k = 0; k < hSpan; k++) {
>								currentWidth += widths[j - k];
>							}
>							currentWidth += (hSpan - 1) * horizontalSpacing
>									- data.horizontalIndent;
>							if ((currentWidth != data.cacheWidth && data.horizontalAlignment == SWT.FILL)
>									|| (data.cacheWidth > currentWidth)) {
>								int trim = 0;
>								if (child instanceof Scrollable) {
>									Rectangle rect = ((Scrollable) child)
>											.computeTrim(0, 0, 0, 0);
>									trim = rect.width;
>								} else {
>									trim = child.getBorderWidth() * 2;
>								}
>								data.cacheWidth = data.cacheHeight = SWT.DEFAULT;
>								data.computeSize(child,
>										Math.max(0, currentWidth - trim),
>										data.heightHint, false);
>								if (data.grabExcessVerticalSpace
>										&& data.minimumHeight > 0) {
>									data.cacheHeight = Math.max(
>											data.cacheHeight,
>											data.minimumHeight);
>								}
>								if (flush == null)
>									flush = new GridData[count];
>								flush[flushLength++] = data;
>							}
>						}
>					}
>				}
>			}
>		}
>
>		/* Row heights */
>		int availableHeight = height - verticalSpacing * (rowCount - 1)
>				- (marginTop + marginHeight * 2 + marginBottom);
>		expandCount = 0;
>		int[] heights = new int[rowCount];
>		int[] minHeights = new int[rowCount];
>		boolean[] expandRow = new boolean[rowCount];
>		for (int i = 0; i < rowCount; i++) {
>			for (int j = 0; j < columnCount; j++) {
>				GridData data = getData(grid, i, j, rowCount, columnCount, true);
>				if (data != null) {
>					int vSpan = Math.max(1,
>							Math.min(data.verticalSpan, rowCount));
>					if (vSpan == 1) {
>						int h = data.cacheHeight + data.verticalIndent;
>						heights[i] = Math.max(heights[i], h);
>						if (data.grabExcessVerticalSpace) {
>							if (!expandRow[i])
>								expandCount++;
>							expandRow[i] = true;
>						}
>						if (!data.grabExcessVerticalSpace
>								|| data.minimumHeight != 0) {
>							h = !data.grabExcessVerticalSpace
>									|| data.minimumHeight == SWT.DEFAULT ? data.cacheHeight
>									: data.minimumHeight;
>							h += data.verticalIndent;
>							minHeights[i] = Math.max(minHeights[i], h);
>						}
>					}
>				}
>			}
>			for (int j = 0; j < columnCount; j++) {
>				GridData data = getData(grid, i, j, rowCount, columnCount,
>						false);
>				if (data != null) {
>					int vSpan = Math.max(1,
>							Math.min(data.verticalSpan, rowCount));
>					if (vSpan > 1) {
>						int spanHeight = 0, spanMinHeight = 0, spanExpandCount = 0;
>						for (int k = 0; k < vSpan; k++) {
>							spanHeight += heights[i - k];
>							spanMinHeight += minHeights[i - k];
>							if (expandRow[i - k])
>								spanExpandCount++;
>						}
>						if (data.grabExcessVerticalSpace
>								&& spanExpandCount == 0) {
>							expandCount++;
>							expandRow[i] = true;
>						}
>						int h = data.cacheHeight + data.verticalIndent
>								- spanHeight - (vSpan - 1) * verticalSpacing;
>						if (h > 0) {
>							if (spanExpandCount == 0) {
>								heights[i] += h;
>							} else {
>								int delta = h / spanExpandCount;
>								int remainder = h % spanExpandCount, last = -1;
>								for (int k = 0; k < vSpan; k++) {
>									if (expandRow[i - k]) {
>										heights[last = i - k] += delta;
>									}
>								}
>								if (last > -1)
>									heights[last] += remainder;
>							}
>						}
>						if (!data.grabExcessVerticalSpace
>								|| data.minimumHeight != 0) {
>							h = !data.grabExcessVerticalSpace
>									|| data.minimumHeight == SWT.DEFAULT ? data.cacheHeight
>									: data.minimumHeight;
>							h += data.verticalIndent - spanMinHeight
>									- (vSpan - 1) * verticalSpacing;
>							if (h > 0) {
>								if (spanExpandCount == 0) {
>									minHeights[i] += h;
>								} else {
>									int delta = h / spanExpandCount;
>									int remainder = h % spanExpandCount, last = -1;
>									for (int k = 0; k < vSpan; k++) {
>										if (expandRow[i - k]) {
>											minHeights[last = i - k] += delta;
>										}
>									}
>									if (last > -1)
>										minHeights[last] += remainder;
>								}
>							}
>						}
>					}
>				}
>			}
>		}
>		if (height != SWT.DEFAULT && expandCount > 0) {
>			int totalHeight = 0;
>			for (int i = 0; i < rowCount; i++) {
>				totalHeight += heights[i];
>			}
>			int c = expandCount;
>			int delta = (availableHeight - totalHeight) / c;
>			int remainder = (availableHeight - totalHeight) % c;
>			int last = -1;
>			while (totalHeight != availableHeight) {
>				for (int i = 0; i < rowCount; i++) {
>					if (expandRow[i]) {
>						if (heights[i] + delta > minHeights[i]) {
>							heights[last = i] = heights[i] + delta;
>						} else {
>							heights[i] = minHeights[i];
>							expandRow[i] = false;
>							c--;
>						}
>					}
>				}
>				if (last > -1)
>					heights[last] += remainder;
>
>				for (int i = 0; i < rowCount; i++) {
>					for (int j = 0; j < columnCount; j++) {
>						GridData data = getData(grid, i, j, rowCount,
>								columnCount, false);
>						if (data != null) {
>							int vSpan = Math.max(1,
>									Math.min(data.verticalSpan, rowCount));
>							if (vSpan > 1) {
>								if (!data.grabExcessVerticalSpace
>										|| data.minimumHeight != 0) {
>									int spanHeight = 0, spanExpandCount = 0;
>									for (int k = 0; k < vSpan; k++) {
>										spanHeight += heights[i - k];
>										if (expandRow[i - k])
>											spanExpandCount++;
>									}
>									int h = !data.grabExcessVerticalSpace
>											|| data.minimumHeight == SWT.DEFAULT ? data.cacheHeight
>											: data.minimumHeight;
>									h += data.verticalIndent - spanHeight
>											- (vSpan - 1) * verticalSpacing;
>									if (h > 0) {
>										if (spanExpandCount == 0) {
>											heights[i] += h;
>										} else {
>											int delta2 = h / spanExpandCount;
>											int remainder2 = h
>													% spanExpandCount, last2 = -1;
>											for (int k = 0; k < vSpan; k++) {
>												if (expandRow[i - k]) {
>													heights[last2 = i - k] += delta2;
>												}
>											}
>											if (last2 > -1)
>												heights[last2] += remainder2;
>										}
>									}
>								}
>							}
>						}
>					}
>				}
>				if (c == 0)
>					break;
>				totalHeight = 0;
>				for (int i = 0; i < rowCount; i++) {
>					totalHeight += heights[i];
>				}
>				delta = (availableHeight - totalHeight) / c;
>				remainder = (availableHeight - totalHeight) % c;
>				last = -1;
>			}
>		}
>
>		/* Position the controls */
>		if (move) {
>			int gridY = y + marginTop + marginHeight;
>			for (int i = 0; i < rowCount; i++) {
>				int gridX = x + marginLeft + marginWidth;
>				for (int j = 0; j < columnCount; j++) {
>					GridData data = getData(grid, i, j, rowCount, columnCount,
>							true);
>					if (data != null) {
>						int hSpan = Math.max(1,
>								Math.min(data.horizontalSpan, columnCount));
>						int vSpan = Math.max(1, data.verticalSpan);
>						int cellWidth = 0, cellHeight = 0;
>						for (int k = 0; k < hSpan; k++) {
>							cellWidth += widths[j + k];
>						}
>						for (int k = 0; k < vSpan; k++) {
>							cellHeight += heights[i + k];
>						}
>						cellWidth += horizontalSpacing * (hSpan - 1);
>						int childX = gridX + data.horizontalIndent;
>						int childWidth = Math.min(data.cacheWidth, cellWidth);
>						switch (data.horizontalAlignment) {
>						case SWT.CENTER:
>						case GridData.CENTER:
>							childX += Math.max(0, (cellWidth
>									- data.horizontalIndent - childWidth) / 2);
>							break;
>						case SWT.RIGHT:
>						case SWT.END:
>						case GridData.END:
>							childX += Math.max(0, cellWidth
>									- data.horizontalIndent - childWidth);
>							break;
>						case SWT.FILL:
>							childWidth = cellWidth - data.horizontalIndent;
>							break;
>						}
>						cellHeight += verticalSpacing * (vSpan - 1);
>						int childY = gridY + data.verticalIndent;
>						int childHeight = Math
>								.min(data.cacheHeight, cellHeight);
>						switch (data.verticalAlignment) {
>						case SWT.CENTER:
>						case GridData.CENTER:
>							childY += Math.max(0, (cellHeight
>									- data.verticalIndent - childHeight) / 2);
>							break;
>						case SWT.BOTTOM:
>						case SWT.END:
>						case GridData.END:
>							childY += Math.max(0, cellHeight
>									- data.verticalIndent - childHeight);
>							break;
>						case SWT.FILL:
>							childHeight = cellHeight - data.verticalIndent;
>							break;
>						}
>						Control child = grid[i][j];
>						if (child != null) {
>							child.setBounds(childX, childY, childWidth,
>									childHeight);
>						}
>					}
>					gridX += widths[j] + horizontalSpacing;
>				}
>				gridY += heights[i] + verticalSpacing;
>			}
>		}
>
>		// clean up cache
>		for (int i = 0; i < flushLength; i++) {
>			flush[i].cacheWidth = flush[i].cacheHeight = -1;
>		}
>
>		int totalDefaultWidth = 0;
>		int totalDefaultHeight = 0;
>		for (int i = 0; i < columnCount; i++) {
>			totalDefaultWidth += widths[i];
>		}
>		for (int i = 0; i < rowCount; i++) {
>			totalDefaultHeight += heights[i];
>		}
>		totalDefaultWidth += horizontalSpacing * (columnCount - 1) + marginLeft
>				+ marginWidth * 2 + marginRight;
>		totalDefaultHeight += verticalSpacing * (rowCount - 1) + marginTop
>				+ marginHeight * 2 + marginBottom;
>		return new Point(totalDefaultWidth, totalDefaultHeight);
>	}
>
>	String getName() {
>		String string = getClass().getName();
>		int index = string.lastIndexOf('.');
>		if (index == -1)
>			return string;
>		return string.substring(index + 1, string.length());
>	}
>
>	/**
>	 * Returns a string containing a concise, human-readable description of the
>	 * receiver.
>	 * 
>	 * @return a string representation of the layout
>	 */
>	public String toString() {
>		String string = getName() + " {";
>		if (numColumns != 1)
>			string += "numColumns=" + numColumns + " ";
>		if (makeColumnsEqualWidth)
>			string += "makeColumnsEqualWidth=" + makeColumnsEqualWidth + " ";
>		if (marginWidth != 0)
>			string += "marginWidth=" + marginWidth + " ";
>		if (marginHeight != 0)
>			string += "marginHeight=" + marginHeight + " ";
>		if (marginLeft != 0)
>			string += "marginLeft=" + marginLeft + " ";
>		if (marginRight != 0)
>			string += "marginRight=" + marginRight + " ";
>		if (marginTop != 0)
>			string += "marginTop=" + marginTop + " ";
>		if (marginBottom != 0)
>			string += "marginBottom=" + marginBottom + " ";
>		if (horizontalSpacing != 0)
>			string += "horizontalSpacing=" + horizontalSpacing + " ";
>		if (verticalSpacing != 0)
>			string += "verticalSpacing=" + verticalSpacing + " ";
>		string = string.trim();
>		string += "}";
>		return string;
>	}
>}

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Attachments on bug 351935: 199555 | 199556 | 199557