/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation (org.eclipse.swt.layout.GridLayout)
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Default values for GridData
*******************************************************************************/
package org.eclipse.papyrus.views.properties.widgets.layout;
import org.eclipse.papyrus.infra.widgets.Activator;
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;
/**
* Layout based on {@link org.eclipse.swt.layout.GridLayout} This layout is basically the same as GridLayout, except for default values (Especially
* the default GridData)
* If an element doesn't have a GridData, a default one is created, which takes as much horizontal space as possible.
* The goal is to enable a nice layout for the Property View, without requiring each Control to have an explicit GridData
* However, explicit GridData are still supported.
*
* 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>
* @see org.eclipse.swt.layout.GridLayout
*/
public class PropertiesLayout extends Layout {
/**
* 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;
/**
* The adjusted number of columns
* If the number of controls is lower than the number of columns,
* some columns will be removed to let these controls take all
* the available space
* GridData#horizontalSpan is taken into account
*/
private int adjustedNumColumns = 1;
/**
* makeColumnsEqualWidth specifies whether all columns in the layout
* will be forced to have the same width.
*
* The default value is true.
*/
public boolean makeColumnsEqualWidth = true;
/**
* 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 0.
*/
public int marginHeight = 0;
/**
* 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 0.
*/
public int verticalSpacing = 0;
/**
* Constructs a new instance of this class.
*/
public PropertiesLayout() {
this(false);
}
/**
*
* Constructor.
*
* @param useMargins
* If false, there won't be any margin. If true, default margins
* will be used
*/
public PropertiesLayout(boolean useMargins) {
if(!useMargins) {
marginHeight = 0;
marginWidth = 0;
}
}
/**
* 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 PropertiesLayout(int numColumns, boolean makeColumnsEqualWidth) {
this(numColumns, makeColumnsEqualWidth, false);
}
/**
*
* Constructor.
*
* @param numColumns
* the number of columns in the grid
* @param makeColumnsEqualWidth
* whether or not the columns will have equal width
* @param useMargins
* If false, there won't be any margin. If true, default margins
* will be used
*/
public PropertiesLayout(int numColumns, boolean makeColumnsEqualWidth, boolean useMargins) {
this(useMargins);
this.numColumns = numColumns;
this.makeColumnsEqualWidth = makeColumnsEqualWidth;
}
@Override
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;
}
@Override
protected boolean flushCache(Control control) {
GridData data = getLayoutData(control);
if(data != null) {
data.flushCache();
}
return true;
}
protected GridData getData(Control[][] grid, int row, int column, int rowCount, int columnCount, boolean first) {
Control control = grid[row][column];
if(control != null) {
GridData data = getLayoutData(control);
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;
}
@Override
protected void layout(Composite composite, boolean flushCache) {
Rectangle rect = composite.getClientArea();
layout(composite, true, rect.x, rect.y, rect.width, rect.height, flushCache);
}
/**
* Removes columns when there are less controls than columns,
* to take all the available space
*
* @param composite
*/
protected void adjustColumns(Composite composite) {
int numChildren = composite.getChildren().length;
adjustedNumColumns = numColumns;
if(numChildren < numColumns) {
int totalColumns = 0;
for(Control child : composite.getChildren()) {
GridData data = getLayoutData(child);
totalColumns += data.horizontalSpan;
}
if(totalColumns < numColumns) {
adjustedNumColumns = totalColumns;
}
}
if(adjustedNumColumns < 1) {
adjustedNumColumns = 1;
}
}
protected Point layout(Composite composite, boolean move, int x, int y, int width, int height, boolean flushCache) {
adjustColumns(composite);
Control[] children = composite.getChildren();
int count = 0;
for(int i = 0; i < children.length; i++) {
Control control = children[i];
GridData data = getLayoutData(control);
if(data == null || !data.exclude) {
children[count++] = children[i];
}
}
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 = getLayoutData(child);
if(data == null) {
child.setLayoutData(data = new GridData());
}
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 = adjustedNumColumns;
Control[][] grid = new Control[4][columnCount];
for(int i = 0; i < count; i++) {
Control child = children[i];
GridData data = getLayoutData(child);
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);
}
protected 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
*/
@Override
public String toString() {
String string = getName() + " {"; //$NON-NLS-1$
if(numColumns != 1) {
string += "numColumns=" + numColumns + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(makeColumnsEqualWidth) {
string += "makeColumnsEqualWidth=" + makeColumnsEqualWidth + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginWidth != 0) {
string += "marginWidth=" + marginWidth + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginHeight != 0) {
string += "marginHeight=" + marginHeight + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginLeft != 0) {
string += "marginLeft=" + marginLeft + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginRight != 0) {
string += "marginRight=" + marginRight + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginTop != 0) {
string += "marginTop=" + marginTop + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(marginBottom != 0) {
string += "marginBottom=" + marginBottom + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(horizontalSpacing != 0) {
string += "horizontalSpacing=" + horizontalSpacing + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
if(verticalSpacing != 0) {
string += "verticalSpacing=" + verticalSpacing + " "; //$NON-NLS-1$ //$NON-NLS-2$
}
string = string.trim();
string += "}"; //$NON-NLS-1$
return string;
}
protected GridData getLayoutData(Control control) {
Object layoutData = control.getLayoutData();
GridData data = null;
if(layoutData == null) { //We create a new default GridData
data = createDefaultLayoutData();
} else if(layoutData instanceof org.eclipse.swt.layout.GridData) { //We convert it to our own GridData class (For visibility matters)
data = new GridData((org.eclipse.swt.layout.GridData)layoutData);
} else if(layoutData instanceof GridData) {
data = (GridData)layoutData;
} else {
data = createDefaultLayoutData();
Activator.log.warn("Unknown LayoutData : " + layoutData); //$NON-NLS-1$
}
control.setLayoutData(data);
return data;
}
protected GridData createDefaultLayoutData() {
return new GridData(SWT.FILL, SWT.BEGINNING, true, false);
}
/**
* Sets the number of columns for this layout
*
* @param numColumns
*/
public void setNumColumns(int numColumns) {
this.numColumns = numColumns;
}
/**
*
* @return the number of columns for this layout
*/
public int getNumColumns() {
return numColumns;
}
/**
* Indicates if all columns should have the same width
*
* @param makeColumnsEqualWidth
*/
public void setMakeColumnsEqualWidth(boolean makeColumnsEqualWidth) {
this.makeColumnsEqualWidth = makeColumnsEqualWidth;
}
/**
*
* @return true if all columns should have the same width
*/
public boolean getMakeColumnsEqualWidth() {
return makeColumnsEqualWidth;
}
}