Java Tutorial/SWT/TreeColumn TreeTable
Содержание
Create a TreeTable
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2005 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 *******************************************************************************/
//package org.eclipse.swt.snippets; /*
* Create a Tree with columns * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.1 */
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; public class TreeTableCreation {
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
Tree tree = new Tree(shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
tree.setHeaderVisible(true);
TreeColumn column1 = new TreeColumn(tree, SWT.LEFT);
column1.setText("Column 1");
column1.setWidth(200);
TreeColumn column2 = new TreeColumn(tree, SWT.CENTER);
column2.setText("Column 2");
column2.setWidth(200);
TreeColumn column3 = new TreeColumn(tree, SWT.RIGHT);
column3.setText("Column 3");
column3.setWidth(200);
for (int i = 0; i < 4; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
item.setText(new String[] { "item " + i, "abc", "defghi" });
for (int j = 0; j < 4; j++) {
TreeItem subItem = new TreeItem(item, SWT.NONE);
subItem.setText(new String[] { "subitem " + j, "jklmnop", "qrs" });
for (int k = 0; k < 4; k++) {
TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
subsubItem.setText(new String[] { "subsubitem " + k, "tuv", "wxyz" });
}
}
}
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}</source>
Multi-line TreeTable
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2006 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 *******************************************************************************/
//package org.eclipse.swt.snippets; /*
* Tree example snippet: Multiple lines in a TreeItem * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.2 */
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; public class TreeItemLines {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Multiple lines in a TreeItem");
shell.setLayout(new FillLayout());
final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION);
tree.setHeaderVisible(true);
tree.setLinesVisible(true);
int columnCount = 4;
for (int i = 0; i < columnCount; i++) {
TreeColumn column = new TreeColumn(tree, SWT.NONE);
column.setText("Column " + i);
column.setWidth(100);
}
int itemCount = 3;
for (int i = 0; i < itemCount; i++) {
TreeItem item1 = new TreeItem(tree, SWT.NONE);
item1.setText("item " + i);
for (int c = 1; c < columnCount; c++) {
item1.setText(c, "item [" + i + "-" + c + "]");
}
for (int j = 0; j < itemCount; j++) {
TreeItem item2 = new TreeItem(item1, SWT.NONE);
item2.setText("item [" + i + " " + j + "]");
for (int c = 1; c < columnCount; c++) {
item2.setText(c, "item [" + i + " " + j + "-" + c + "]");
}
for (int k = 0; k < itemCount; k++) {
TreeItem item3 = new TreeItem(item2, SWT.NONE);
item3.setText("item [" + i + " " + j + " " + k + "]");
for (int c = 1; c < columnCount; c++) {
item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]");
}
}
}
}
/*
* NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
* Therefore, it is critical for performance that these methods be as
* efficient as possible.
*/
Listener paintListener = new Listener() {
public void handleEvent(Event event) {
switch (event.type) {
case SWT.MeasureItem: {
TreeItem item = (TreeItem) event.item;
String text = getText(item, event.index);
Point size = event.gc.textExtent(text);
event.width = size.x;
event.height = Math.max(event.height, size.y);
break;
}
case SWT.PaintItem: {
TreeItem item = (TreeItem) event.item;
String text = getText(item, event.index);
Point size = event.gc.textExtent(text);
int offset2 = event.index == 0 ? Math.max(0, (event.height - size.y) / 2) : 0;
event.gc.drawText(text, event.x, event.y + offset2, true);
break;
}
case SWT.EraseItem: {
event.detail &= ~SWT.FOREGROUND;
break;
}
}
}
String getText(TreeItem item, int column) {
String text = item.getText(column);
if (column != 0) {
TreeItem parent = item.getParentItem();
int index = parent == null ? tree.indexOf(item) : parent.indexOf(item);
if ((index + column) % 3 == 1) {
text += "\nnew line";
}
if ((index + column) % 3 == 2) {
text += "\nnew line\nnew line";
}
}
return text;
}
};
tree.addListener(SWT.MeasureItem, paintListener);
tree.addListener(SWT.PaintItem, paintListener);
tree.addListener(SWT.EraseItem, paintListener);
shell.setSize(600, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
Show Barchar in TreeTable
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2006 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 *******************************************************************************/
//package org.eclipse.swt.snippets; /*
* Tree example snippet: Draw a bar graph * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.2 */
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; public class TreeTableBarChart {
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
shell.setText("Show results as a bar chart in Tree");
final Tree tree = new Tree(shell, SWT.BORDER);
tree.setHeaderVisible(true);
tree.setLinesVisible(true);
TreeColumn column1 = new TreeColumn(tree, SWT.NONE);
column1.setText("Bug Status");
column1.setWidth(100);
final TreeColumn column2 = new TreeColumn(tree, SWT.NONE);
column2.setText("Percent");
column2.setWidth(200);
String[] states = new String[] { "Resolved", "New", "Won"t Fix", "Invalid" };
String[] teams = new String[] { "UI", "SWT", "OSGI" };
for (int i = 0; i < teams.length; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
item.setText(teams[i]);
for (int j = 0; j < states.length; j++) {
TreeItem subItem = new TreeItem(item, SWT.NONE);
subItem.setText(states[j]);
}
}
/*
* NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
* Therefore, it is critical for performance that these methods be as
* efficient as possible.
*/
tree.addListener(SWT.PaintItem, new Listener() {
int[] percents = new int[] { 50, 30, 5, 15 };
public void handleEvent(Event event) {
if (event.index == 1) {
TreeItem item = (TreeItem) event.item;
TreeItem parent = item.getParentItem();
if (parent != null) {
GC gc = event.gc;
int index = parent.indexOf(item);
int percent = percents[index];
Color foreground = gc.getForeground();
Color background = gc.getBackground();
gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
gc.setBackground(display.getSystemColor(SWT.COLOR_YELLOW));
int width = (column2.getWidth() - 1) * percent / 100;
gc.fillGradientRectangle(event.x, event.y, width, event.height, true);
Rectangle rect2 = new Rectangle(event.x, event.y, width - 1, event.height - 1);
gc.drawRectangle(rect2);
gc.setForeground(display.getSystemColor(SWT.COLOR_LIST_FOREGROUND));
String text = percent + "%";
Point size = event.gc.textExtent(text);
int offset = Math.max(0, (event.height - size.y) / 2);
gc.drawText(text, event.x + 2, event.y + offset, true);
gc.setForeground(background);
gc.setBackground(foreground);
}
}
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
TreeTable: Allow user to reorder columns and reorder columns programmatically.
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2005 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 *******************************************************************************/
//package org.eclipse.swt.snippets; /*
* Allow user to reorder columns and reorder columns programmatically. * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.2 */
import org.eclipse.swt.SWT; import org.eclipse.swt.layout.RowData; import org.eclipse.swt.layout.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; public class TreeTableReorderColumn {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout(SWT.HORIZONTAL));
final Tree tree = new Tree(shell, SWT.BORDER | SWT.CHECK);
tree.setLayoutData(new RowData(-1, 300));
tree.setHeaderVisible(true);
TreeColumn column = new TreeColumn(tree, SWT.LEFT);
column.setText("Column 0");
column = new TreeColumn(tree, SWT.CENTER);
column.setText("Column 1");
column = new TreeColumn(tree, SWT.LEFT);
column.setText("Column 2");
column = new TreeColumn(tree, SWT.RIGHT);
column.setText("Column 3");
column = new TreeColumn(tree, SWT.CENTER);
column.setText("Column 4");
for (int i = 0; i < 5; i++) {
TreeItem item = new TreeItem(tree, SWT.NONE);
String[] text = new String[] { i + ":0", i + ":1", i + ":2", i + ":3", i + ":4" };
item.setText(text);
for (int j = 0; j < 5; j++) {
TreeItem subItem = new TreeItem(item, SWT.NONE);
text = new String[] { i + "," + j + ":0", i + "," + j + ":1", i + "," + j + ":2",
i + "," + j + ":3", i + "," + j + ":4" };
subItem.setText(text);
for (int k = 0; k < 5; k++) {
TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
text = new String[] { i + "," + j + "," + k + ":0", i + "," + j + "," + k + ":1",
i + "," + j + "," + k + ":2", i + "," + j + "," + k + ":3",
i + "," + j + "," + k + ":4" };
subsubItem.setText(text);
}
}
}
Listener listener = new Listener() {
public void handleEvent(Event e) {
System.out.println("Move " + e.widget);
}
};
TreeColumn[] columns = tree.getColumns();
for (int i = 0; i < columns.length; i++) {
columns[i].setWidth(100);
columns[i].setMoveable(true);
columns[i].addListener(SWT.Move, listener);
}
Button b = new Button(shell, SWT.PUSH);
b.setText("invert column order");
b.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
int[] order = tree.getColumnOrder();
for (int i = 0; i < order.length / 2; i++) {
int temp = order[i];
order[i] = order[order.length - i - 1];
order[order.length - i - 1] = temp;
}
tree.setColumnOrder(order);
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
Tree Table: Draw a custom gradient selection
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2006 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 *******************************************************************************/
//package org.eclipse.swt.snippets; /*
* Tree example snippet: Draw a custom gradient selection * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.2 */
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.graphics.Region; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Tree; import org.eclipse.swt.widgets.TreeColumn; import org.eclipse.swt.widgets.TreeItem; public class TreeTableGradient {
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Custom gradient selection for Tree");
shell.setLayout(new FillLayout());
final Tree tree = new Tree(shell, SWT.MULTI | SWT.FULL_SELECTION);
tree.setHeaderVisible(true);
tree.setLinesVisible(true);
int columnCount = 4;
for (int i = 0; i < columnCount; i++) {
TreeColumn column = new TreeColumn(tree, SWT.NONE);
column.setText("Column " + i);
}
int itemCount = 3;
for (int i = 0; i < itemCount; i++) {
TreeItem item1 = new TreeItem(tree, SWT.NONE);
item1.setText("item " + i);
for (int c = 1; c < columnCount; c++) {
item1.setText(c, "item [" + i + "-" + c + "]");
}
for (int j = 0; j < itemCount; j++) {
TreeItem item2 = new TreeItem(item1, SWT.NONE);
item2.setText("item [" + i + " " + j + "]");
for (int c = 1; c < columnCount; c++) {
item2.setText(c, "item [" + i + " " + j + "-" + c + "]");
}
for (int k = 0; k < itemCount; k++) {
TreeItem item3 = new TreeItem(item2, SWT.NONE);
item3.setText("item [" + i + " " + j + " " + k + "]");
for (int c = 1; c < columnCount; c++) {
item3.setText(c, "item [" + i + " " + j + " " + k + "-" + c + "]");
}
}
}
}
/*
* NOTE: MeasureItem, PaintItem and EraseItem are called repeatedly.
* Therefore, it is critical for performance that these methods be as
* efficient as possible.
*/
tree.addListener(SWT.EraseItem, new Listener() {
public void handleEvent(Event event) {
if ((event.detail & SWT.SELECTED) != 0) {
GC gc = event.gc;
Rectangle area = tree.getClientArea();
/*
* If you wish to paint the selection beyond the end of last column,
* you must change the clipping region.
*/
int columnCount = tree.getColumnCount();
if (event.index == columnCount - 1 || columnCount == 0) {
int width = area.x + area.width - event.x;
if (width > 0) {
Region region = new Region();
gc.getClipping(region);
region.add(event.x, event.y, width, event.height);
gc.setClipping(region);
region.dispose();
}
}
gc.setAdvanced(true);
if (gc.getAdvanced())
gc.setAlpha(127);
Rectangle rect = event.getBounds();
Color foreground = gc.getForeground();
Color background = gc.getBackground();
gc.setForeground(display.getSystemColor(SWT.COLOR_RED));
gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_BACKGROUND));
gc.fillGradientRectangle(0, rect.y, 500, rect.height, false);
// restore colors for subsequent drawing
gc.setForeground(foreground);
gc.setBackground(background);
event.detail &= ~SWT.SELECTED;
}
}
});
for (int i = 0; i < columnCount; i++) {
tree.getColumn(i).pack();
}
tree.setSelection(tree.getItem(0));
shell.setSize(500, 200);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
