SWT控件添加tooltip的若干方法

以下内容源网址：

http://jexp.ru/index.php/Java_Tutorial/SWT/ToolTip#Add_ToolTip_to_Shell_Window

Add ToolTip to Shell Window

import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class ShellWindowToolTip {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setToolTipText ("Shell \n toolTip");
 
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

 

 

 

 

Add ToolTip to TabItem

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TabFolder;
import org.eclipse.swt.widgets.TabItem;
public class TabItemToolTip{
public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  TabFolder folder = new TabFolder (shell, SWT.BORDER);
  folder.setSize (200, 200);
  TabItem item0 = new TabItem (folder, 0);
  item0.setToolTipText ("TabItem \n toolTip");
 
  shell.open ();
  while (!shell.isDisposed ()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}

 

 

 

 

Add ToolTip to ToolItem

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemToolTip {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    ToolBar bar = new ToolBar(shell, SWT.BORDER);
    bar.setBounds(0, 20, 200, 64);
    ToolItem item1 = new ToolItem(bar, 0);
    item1.setToolTipText("ToolItem \n toolTip");
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

 

 

 

 

Create fake tool tips for items in a table

/*******************************************************************************
 * 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;
/*
 * Tool Tips example snippet: create fake tool tips for items in a table
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.SWT;
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.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;
public class TooltipTableItem {
  public static void main(String[] args) {
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());
    final Table table = new Table(shell, SWT.BORDER);
    for (int i = 0; i < 20; i++) {
      TableItem item = new TableItem(table, SWT.NONE);
      item.setText("item " + i);
    }
    // Disable native tooltip
    table.setToolTipText("");
    // Implement a "fake" tooltip
    final Listener labelListener = new Listener() {
      public void handleEvent(Event event) {
        Label label = (Label) event.widget;
        Shell shell = label.getShell();
        switch (event.type) {
        case SWT.MouseDown:
          Event e = new Event();
          e.item = (TableItem) label.getData("_TABLEITEM");
          // Assuming table is single select, set the selection as if
          // the mouse down event went through to the table
          table.setSelection(new TableItem[] { (TableItem) e.item });
          table.notifyListeners(SWT.Selection, e);
          shell.dispose();
          table.setFocus();
          break;
        case SWT.MouseExit:
          shell.dispose();
          break;
        }
      }
    };
    Listener tableListener = new Listener() {
      Shell tip = null;
      Label label = null;
      public void handleEvent(Event event) {
        switch (event.type) {
        case SWT.Dispose:
        case SWT.KeyDown:
        case SWT.MouseMove: {
          if (tip == null)
            break;
          tip.dispose();
          tip = null;
          label = null;
          break;
        }
        case SWT.MouseHover: {
          TableItem item = table.getItem(new Point(event.x, event.y));
          if (item != null) {
            if (tip != null && !tip.isDisposed())
              tip.dispose();
            tip = new Shell(shell, SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
            tip.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
            FillLayout layout = new FillLayout();
            layout.marginWidth = 2;
            tip.setLayout(layout);
            label = new Label(tip, SWT.NONE);
            label.setForeground(display.getSystemColor(SWT.COLOR_INFO_FOREGROUND));
            label.setBackground(display.getSystemColor(SWT.COLOR_INFO_BACKGROUND));
            label.setData("_TABLEITEM", item);
            label.setText(item.getText());
            label.addListener(SWT.MouseExit, labelListener);
            label.addListener(SWT.MouseDown, labelListener);
            Point size = tip.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
            Rectangle rect = item.getBounds(0);
            Point pt = table.toDisplay(rect.x, rect.y);
            tip.setBounds(pt.x, pt.y, size.x, size.y);
            tip.setVisible(true);
          }
        }
        }
      }
    };
    table.addListener(SWT.Dispose, tableListener);
    table.addListener(SWT.KeyDown, tableListener);
    table.addListener(SWT.MouseMove, tableListener);
    table.addListener(SWT.MouseHover, tableListener);
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

 

 

 

 

Show a tool tip inside a rectangle

/*******************************************************************************
 * Copyright (c) 2000, 2004 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;
/*
 * Tool Tips example snippet: show a tool tip inside a rectangle
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
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.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class ToolTipRectangle {
  public static void main(String[] args) {
    Display display = new Display();
    final Color[] colors = { display.getSystemColor(SWT.COLOR_RED),
        display.getSystemColor(SWT.COLOR_GREEN), display.getSystemColor(SWT.COLOR_BLUE), };
    final Rectangle[] rects = { new Rectangle(10, 10, 30, 30), new Rectangle(20, 45, 25, 35),
        new Rectangle(80, 80, 10, 10), };
    final Shell shell = new Shell(display);
    Listener mouseListener = new Listener() {
      public void handleEvent(Event event) {
        switch (event.type) {
        case SWT.MouseEnter:
        case SWT.MouseMove:
          for (int i = 0; i < rects.length; i++) {
            if (rects[i].contains(event.x, event.y)) {
              String text = "ToolTip " + i;
              if (!(text.equals(shell.getToolTipText()))) {
                shell.setToolTipText("ToolTip " + i);
              }
              return;
            }
          }
          shell.setToolTipText(null);
          break;
        }
      }
    };
    shell.addListener(SWT.MouseMove, mouseListener);
    shell.addListener(SWT.MouseEnter, mouseListener);
    shell.addListener(SWT.Paint, new Listener() {
      public void handleEvent(Event event) {
        GC gc = event.gc;
        for (int i = 0; i < rects.length; i++) {
          gc.setBackground(colors[i]);
          gc.fillRectangle(rects[i]);
          gc.drawRectangle(rects[i]);
        }
      }
    });
    shell.setSize(200, 200);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

 如果觉得文章很好，请鼓励一下我吧：D爱的么么哒！