在我的这篇随笔http://www.blogjava.net/lzqdiy/archive/2007/05/13/117086.html中，我使用了JDK1.6中的AWT来创建一个系统托盘，博友们强烈建议我用SWT来实现，我也感觉原来的程序中既有AWT又有SWT，有点不伦不类，于是我将程序中系统托盘的实现部分改成了用SWT实现，源程序如下：
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.custom.StackLayout;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.eclipse.swt.widgets.Tray;
import org.eclipse.swt.widgets.TrayItem;
import com.swtdesigner.SWTResourceManager;
public class QQ
{
private Text introText;
private Combo constellationCombo;
private Combo jobCombo;
private Combo animalCombo;
private Combo bloodCombo;
private Text schoolText;
private Text frontPageText;
private Text oleText;
private Text nameText;
private Combo sexCombo;
private Canvas rank;
private Text attachName;
private Text nickName;
private Text text;
private List selectList;
private StackLayout stackLayout = new StackLayout();
private Composite composite;
private Composite composite_1;
private Composite rightComp;
private static Image image;
private static Image rankimage;
// private static SystemTray st;
/** *//**
* Launch the application
*
* @param args
*/
public static void main(String[] args)
{
try
{
QQ window = new QQ();
window.open();
} catch (Exception e)
{
e.printStackTrace();
}
}
public static void createPopupMenu()
{
}
/** *//**
* Open the window
*/
public void open()
{
final Display display = Display.getDefault();
final Shell shell = new Shell();
Image image2 = new Image(display, "qq.gif");
final Tray tray = display.getSystemTray();
final TrayItem trayItem = new TrayItem(tray, SWT.NONE);
trayItem.setToolTipText("QQ 176870965");
trayItem.setImage(image2);
//添加右键菜单
final Menu menu = new Menu(shell, SWT.POP_UP);
MenuItem menuItemMaximize = new MenuItem(menu, SWT.PUSH);// 最大化菜单
menuItemMaximize.setText("最大化");
menuItemMaximize.addSelectionListener(new SelectionListener()
{
public void widgetSelected(SelectionEvent e)
{
shell.setVisible(true);
shell.setMaximized(true);
}
public void widgetDefaultSelected(SelectionEvent e)
{
// widgetSelected(e);
}
});
MenuItem menuItemMinimize = new MenuItem(menu, SWT.PUSH);// 最小化菜单
menuItemMinimize.setText("最小化");
menuItemMinimize.addSelectionListener(new SelectionListener()
{
public void widgetSelected(SelectionEvent e)
{
shell.setMinimized(true);
}
public void widgetDefaultSelected(SelectionEvent e)
{
// widgetSelected(e);
}
});
new MenuItem(menu, SWT.SEPARATOR);// 分割条
MenuItem menuItemClose = new MenuItem(menu, SWT.PUSH);// 关闭菜单
menuItemClose.setText("退出");
menuItemClose.addSelectionListener(new SelectionListener()
{
public void widgetDefaultSelected(SelectionEvent e)
{
Display.getCurrent().close();
}
public void widgetSelected(SelectionEvent e)
{
widgetDefaultSelected(e);
}
});
//右键单击弹出菜单
trayItem.addListener(SWT.MenuDetect, new Listener()
{
public void handleEvent(Event event)
{
System.out.println("右键菜单");
menu.setLocation(display.getCursorLocation());
menu.setVisible(true);
}
});
trayItem.addSelectionListener(new SelectionListener()
{
// 左键单击
public void widgetSelected(SelectionEvent e)
{
System.out.println("左键单击");
// 左键单击时 ,隐藏,显示主窗口
if (shell.isVisible())
{
shell.setVisible(false);
} else
{
shell.setVisible(true);
shell.forceActive();
}
}
// 左键双击,右键双击,都是它
public void widgetDefaultSelected(SelectionEvent e)
{
System.out.println("双击");
}
});
shell.setBackground(SWTResourceManager.getColor(103, 172, 231));
shell.setLayout(new GridLayout());
shell.setSize(500, 400);
shell.setLocation(262, 184);
shell.setText("QQ2006设置");
//
shell.open();
final SashForm sashForm = new SashForm(shell, SWT.NONE);
sashForm.setForeground(SWTResourceManager.getColor(103, 172, 231));
sashForm.setLayoutData(new GridData(GridData.FILL_BOTH));
selectList = new List(sashForm, SWT.NONE);
selectList.addMouseListener(new MouseAdapter()
{
public void mouseDown(MouseEvent arg0)
{
int selectionIndex = selectList.getSelectionIndex();
if (selectionIndex == 0)
stackLayout.topControl = composite;
else
stackLayout.topControl = composite_1;
rightComp.layout();
}
});
selectList.setItems(new String[]
{ "个人资料", "联系方式" });
rightComp = new Composite(sashForm, SWT.NONE);
rightComp.setBackground(SWTResourceManager.getColor(23, 255, 255));
rightComp.setLayout(stackLayout);
composite = new Composite(rightComp, SWT.BORDER);
composite.setForeground(SWTResourceManager.getColor(0, 0, 255));
composite.setBackground(SWTResourceManager.getColor(255, 255, 255));
GridLayout gridLayout = new GridLayout(6, false);
gridLayout.horizontalSpacing = 10;
composite.setLayout(gridLayout);
final Label titleLabel = new Label(composite, SWT.NONE);
titleLabel.setForeground(SWTResourceManager.getColor(1, 25, 97));
titleLabel.setBackground(SWTResourceManager.getColor(229, 241, 253));
titleLabel.setFont(SWTResourceManager.getFont("", 11, SWT.BOLD));
titleLabel.setText("个人设置－个人资料");
GridData gridData3 = new GridData(GridData.FILL_HORIZONTAL);
gridData3.horizontalSpan = 6;
titleLabel.setLayoutData(gridData3);
final Label label1 = new Label(composite, SWT.NONE);
label1.setBackground(SWTResourceManager.getColor(255, 255, 255));
label1.setText("用户号码:");
text = new Text(composite, SWT.READ_ONLY | SWT.BORDER);
text.setBackground(SWTResourceManager.getColor(255, 255, 255));
GridData gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
text.setLayoutData(gridData);
final Composite photoComp = new Composite(composite, SWT.NONE);
photoComp.setBackground(SWTResourceManager.getColor(255, 255, 255));
gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL
| GridData.VERTICAL_ALIGN_FILL);
gridData.horizontalSpan = 2;
gridData.verticalSpan = 2;
photoComp.setLayoutData(gridData);
photoComp.setLayout(new GridLayout(2, false));
final Composite tempComp = new Composite(photoComp, SWT.BORDER);
tempComp.setLayout(new FillLayout());
tempComp.setLayoutData(new GridData(30, 30));
final Canvas canvas = new Canvas(tempComp, SWT.NONE);
image = new Image(display, "mum.jpg");
canvas.redraw();
canvas.addPaintListener(new PaintListener()
{
public void paintControl(PaintEvent event)
{
event.gc.drawImage(image, 0, 0);
}
});
final Button setPhotoButton = new Button(photoComp, SWT.DOWN);
setPhotoButton.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_END));
setPhotoButton.setText("更改");
final Label label2 = new Label(composite, SWT.NONE);
label2.setBackground(SWTResourceManager.getColor(255, 255, 255));
label2.setText("用户昵称:");
nickName = new Text(composite, SWT.BORDER);
gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
nickName.setLayoutData(gridData);
final Label label3 = new Label(composite, SWT.NONE);
label3.setBackground(SWTResourceManager.getColor(255, 255, 255));
gridData = new GridData(GridData.VERTICAL_ALIGN_BEGINNING);
label3.setLayoutData(gridData);
label3.setText("个性签名:");
attachName = new Text(composite, SWT.BORDER);
gridData = new GridData(GridData.FILL_BOTH);
gridData.horizontalSpan = 5;
gridData.verticalSpan = 2;
attachName.setLayoutData(gridData);
final Label label22 = new Label(composite, SWT.NONE);
final Label labe24 = new Label(composite, SWT.NONE);
labe24.setBackground(SWTResourceManager.getColor(255, 255, 255));
labe24.setText("会员阶段:");
final Label labe23 = new Label(composite, SWT.NONE);
final Label label4 = new Label(composite, SWT.NONE);
label4.setBackground(SWTResourceManager.getColor(255, 255, 255));
label4.setText("QQ等级:");
rank = new Canvas(composite, SWT.NONE);
rank.addPaintListener(new PaintListener()
{
public void paintControl(PaintEvent event)
{
event.gc.drawImage(rankimage, 0, 0);
}
});
rank.setBackground(SWTResourceManager.getColor(255, 255, 255));
gridData = new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1);
gridData.heightHint = 17;
rank.setLayoutData(gridData);
rankimage = new Image(display, "rank.jpg");
rank.redraw();
final Label label5 = new Label(composite, SWT.NONE);
label5.setBackground(SWTResourceManager.getColor(255, 255, 255));
label5.setLayoutData(new GridData());
label5.setText("性 别:");
sexCombo = new Combo(composite, SWT.NONE);
sexCombo.setBackground(SWTResourceManager.getColor(255, 255, 255));
sexCombo.setForeground(SWTResourceManager.getColor(0, 0, 0));
sexCombo.setItems(new String[]
{ "男", "女" });
sexCombo.setText("男");
final Label label6 = new Label(composite, SWT.NONE);
label6.setBackground(SWTResourceManager.getColor(255, 255, 255));
label6.setText("姓名:");
nameText = new Text(composite, SWT.BORDER);
nameText.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
final Label label7 = new Label(composite, SWT.NONE);
label7.setBackground(SWTResourceManager.getColor(255, 255, 255));
label7.setText("年龄:");
oleText = new Text(composite, SWT.BORDER);
oleText.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
final Label label8 = new Label(composite, SWT.NONE);
label8.setBackground(SWTResourceManager.getColor(255, 255, 255));
label8.setText("毕业院校:");
schoolText = new Text(composite, SWT.BORDER);
gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
schoolText.setLayoutData(gridData);
final Label label9 = new Label(composite, SWT.NONE);
label9.setBackground(SWTResourceManager.getColor(255, 255, 255));
label9.setText("生肖:");
animalCombo = new Combo(composite, SWT.NONE);
animalCombo.setBackground(SWTResourceManager.getColor(255, 255, 255));
animalCombo.setItems(new String[]
{ "猴", "鸡", "狗" });
animalCombo.setText("鸡");
animalCombo.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
final Label label10 = new Label(composite, SWT.NONE);
label10.setBackground(SWTResourceManager.getColor(255, 255, 255));
label10.setText("职 业:");
jobCombo = new Combo(composite, SWT.BORDER);
jobCombo.setBackground(SWTResourceManager.getColor(255, 255, 255));
jobCombo.setItems(new String[]
{ "计算机业", "学生" });
jobCombo.setText("计算机业");
gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
jobCombo.setLayoutData(gridData);
final Label label11 = new Label(composite, SWT.NONE);
label11.setBackground(SWTResourceManager.getColor(255, 255, 255));
label11.setText("星座:");
constellationCombo = new Combo(composite, SWT.NONE);
constellationCombo.setBackground(SWTResourceManager.getColor(255, 255,
255));
constellationCombo.setItems(new String[]
{ "牧羊座", "金牛座" });
constellationCombo.setText("牧羊座");
constellationCombo.setLayoutData(new GridData(
GridData.HORIZONTAL_ALIGN_FILL));
final Label label28 = new Label(composite, SWT.NONE);
label28.setBackground(SWTResourceManager.getColor(255, 255, 255));
label28.setText("个人主页:");
frontPageText = new Text(composite, SWT.BORDER);
gridData = new GridData(GridData.FILL_HORIZONTAL);
gridData.horizontalSpan = 3;
frontPageText.setLayoutData(gridData);
final Label label29 = new Label(composite, SWT.NONE);
label29.setBackground(SWTResourceManager.getColor(255, 255, 255));
label29.setText("血型:");
bloodCombo = new Combo(composite, SWT.NONE);
bloodCombo.setBackground(SWTResourceManager.getColor(255, 255, 255));
bloodCombo.setItems(new String[]
{ "A型", "B型", "O型", "AB型", "其他" });
bloodCombo.setText("O型");
bloodCombo.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
final Label introLabel = new Label(composite, SWT.NONE);
introLabel.setBackground(SWTResourceManager.getColor(255, 255, 255));
introLabel
.setLayoutData(new GridData(GridData.VERTICAL_ALIGN_BEGINNING));
introLabel.setText("个人说明:");
introText = new Text(composite, SWT.WRAP | SWT.BORDER);
gridData = new GridData(GridData.HORIZONTAL_ALIGN_FILL
| GridData.FILL_VERTICAL);
gridData.horizontalSpan = 5;
introText.setLayoutData(gridData);
composite_1 = new Composite(rightComp, SWT.NONE);
composite_1.setLayout(new FillLayout());
final Label label = new Label(composite_1, SWT.NONE);
label.setText("联系方式面板");
stackLayout.topControl = composite;
final Composite buttonComp = new Composite(shell, SWT.NONE);
buttonComp.setBackground(SWTResourceManager.getColor(107, 172, 231));
gridData = new GridData();
gridData.horizontalAlignment = GridData.END;
buttonComp.setLayoutData(gridData);
RowLayout rowLayout = new RowLayout();
rowLayout.spacing = 15;
buttonComp.setLayout(rowLayout);
final Button button = new Button(buttonComp, SWT.NONE);
button.setForeground(SWTResourceManager.getColor(0, 255, 255));
button.setBackground(SWTResourceManager.getColor(182, 222, 255));
button.setText(" 确定 ");
final Button button_1 = new Button(buttonComp, SWT.NONE);
button_1.setText(" 取消 ");
final Button button_2 = new Button(buttonComp, SWT.NONE);
button_2.setText(" 应用 ");
sashForm.setWeights(new int[]
{ 1, 4 });
shell.layout();
while (!shell.isDisposed())
{
if (!display.readAndDispatch())
display.sleep();
}
}
}
package com.swtdesigner;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Iterator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
/** *//**
* Utility class for managing OS resources associated with SWT controls such as
* colors, fonts, images, etc.
*
* !!! IMPORTANT !!! Application code must explicitly invoke the <code>dispose()</code>
* method to release the operating system resources managed by cached objects
* when those objects and OS resources are no longer needed (e.g. on
* application shutdown)
*
* This class may be freely distributed as part of any application or plugin.
* <p>
* Copyright (c) 2003 - 2005, Instantiations, Inc. <br>All Rights Reserved
*
* @author scheglov_ke
* @author Dan Rubel
*/
public class SWTResourceManager {
/** *//**
* Dispose of cached objects and their underlying OS resources. This should
* only be called when the cached objects are no longer needed (e.g. on
* application shutdown)
*/
public static void dispose() {
disposeColors();
disposeFonts();
disposeImages();
disposeCursors();
}
//////////////////////////////
// Color support
//////////////////////////////
/** *//**
* Maps RGB values to colors
*/
private static HashMap<RGB, Color> m_ColorMap = new HashMap<RGB, Color>();
/** *//**
* Returns the system color matching the specific ID
* @param systemColorID int The ID value for the color
* @return Color The system color matching the specific ID
*/
public static Color getColor(int systemColorID) {
Display display = Display.getCurrent();
return display.getSystemColor(systemColorID);
}
/** *//**
* Returns a color given its red, green and blue component values
* @param r int The red component of the color
* @param g int The green component of the color
* @param b int The blue component of the color
* @return Color The color matching the given red, green and blue componet values
*/
public static Color getColor(int r, int g, int b) {
return getColor(new RGB(r, g, b));
}
/** *//**
* Returns a color given its RGB value
* @param rgb RGB The RGB value of the color
* @return Color The color matching the RGB value
*/
public static Color getColor(RGB rgb) {
Color color = m_ColorMap.get(rgb);
if (color == null) {
Display display = Display.getCurrent();
color = new Color(display, rgb);
m_ColorMap.put(rgb, color);
}
return color;
}
/** *//**
* Dispose of all the cached colors
*/
public static void disposeColors() {
for (Iterator iter = m_ColorMap.values().iterator(); iter.hasNext();)
((Color) iter.next()).dispose();
m_ColorMap.clear();
}
//////////////////////////////
// Image support
//////////////////////////////
/** *//**
* Maps image names to images
*/
private static HashMap<String, Image> m_ClassImageMap = new HashMap<String, Image>();
/** *//**
* Maps images to image decorators
*/
private static HashMap<Image, HashMap<Image, Image>> m_ImageToDecoratorMap = new HashMap<Image, HashMap<Image, Image>>();
/** *//**
* Returns an image encoded by the specified input stream
* @param is InputStream The input stream encoding the image data
* @return Image The image encoded by the specified input stream
*/
protected static Image getImage(InputStream is) {
Display display = Display.getCurrent();
ImageData data = new ImageData(is);
if (data.transparentPixel > 0)
return new Image(display, data, data.getTransparencyMask());
return new Image(display, data);
}
/** *//**
* Returns an image stored in the file at the specified path
* @param path String The path to the image file
* @return Image The image stored in the file at the specified path
*/
public static Image getImage(String path) {
return getImage("default", path); //$NON-NLS-1$
}
/** *//**
* Returns an image stored in the file at the specified path
* @param section The section to which belongs specified image
* @param path String The path to the image file
* @return Image The image stored in the file at the specified path
*/
public static Image getImage(String section, String path) {
String key = section + '|' + SWTResourceManager.class.getName() + '|' + path;
Image image = m_ClassImageMap.get(key);
if (image == null) {
try {
FileInputStream fis = new FileInputStream(path);
image = getImage(fis);
m_ClassImageMap.put(key, image);
fis.close();
} catch (Exception e) {
image = getMissingImage();
m_ClassImageMap.put(key, image);
}
}
return image;
}
/** *//**
* Returns an image stored in the file at the specified path relative to the specified class
* @param clazz Class The class relative to which to find the image
* @param path String The path to the image file
* @return Image The image stored in the file at the specified path
*/
public static Image getImage(Class clazz, String path) {
String key = clazz.getName() + '|' + path;
Image image = m_ClassImageMap.get(key);
if (image == null) {
try {
if (path.length() > 0 && path.charAt(0) == '/') {
String newPath = path.substring(1, path.length());
image = getImage(new BufferedInputStream(clazz.getClassLoader().getResourceAsStream(newPath)));
} else {
image = getImage(clazz.getResourceAsStream(path));
}
m_ClassImageMap.put(key, image);
} catch (Exception e) {
image = getMissingImage();
m_ClassImageMap.put(key, image);
}
}
return image;
}
private static final int MISSING_IMAGE_SIZE = 10;
private static Image getMissingImage() {
Image image = new Image(Display.getCurrent(), MISSING_IMAGE_SIZE, MISSING_IMAGE_SIZE);
//
GC gc = new GC(image);
gc.setBackground(getColor(SWT.COLOR_RED));
gc.fillRectangle(0, 0, MISSING_IMAGE_SIZE, MISSING_IMAGE_SIZE);
gc.dispose();
//
return image;
}
/** *//**
* Style constant for placing decorator image in top left corner of base image.
*/
public static final int TOP_LEFT = 1;
/** *//**
* Style constant for placing decorator image in top right corner of base image.
*/
public static final int TOP_RIGHT = 2;
/** *//**
* Style constant for placing decorator image in bottom left corner of base image.
*/
public static final int BOTTOM_LEFT = 3;
/** *//**
* Style constant for placing decorator image in bottom right corner of base image.
*/
public static final int BOTTOM_RIGHT = 4;
/** *//**
* Returns an image composed of a base image decorated by another image
* @param baseImage Image The base image that should be decorated
* @param decorator Image The image to decorate the base image
* @return Image The resulting decorated image
*/
public static Image decorateImage(Image baseImage, Image decorator) {
return decorateImage(baseImage, decorator, BOTTOM_RIGHT);
}
/** *//**
* Returns an image composed of a base image decorated by another image
* @param baseImage Image The base image that should be decorated
* @param decorator Image The image to decorate the base image
* @param corner The corner to place decorator image
* @return Image The resulting decorated image
*/
public static Image decorateImage(Image baseImage, Image decorator, int corner) {
HashMap<Image, Image> decoratedMap = m_ImageToDecoratorMap.get(baseImage);
if (decoratedMap == null) {
decoratedMap = new HashMap<Image, Image>();
m_ImageToDecoratorMap.put(baseImage, decoratedMap);
}
Image result = decoratedMap.get(decorator);
if (result == null) {
Rectangle bid = baseImage.getBounds();
Rectangle did = decorator.getBounds();
result = new Image(Display.getCurrent(), bid.width, bid.height);
GC gc = new GC(result);
gc.drawImage(baseImage, 0, 0);
//
if (corner == TOP_LEFT) {
gc.drawImage(decorator, 0, 0);
} else if (corner == TOP_RIGHT) {
gc.drawImage(decorator, bid.width - did.width - 1, 0);
} else if (corner == BOTTOM_LEFT) {
gc.drawImage(decorator, 0, bid.height - did.height - 1);
} else if (corner == BOTTOM_RIGHT) {
gc.drawImage(decorator, bid.width - did.width - 1, bid.height - did.height - 1);
}
//
gc.dispose();
decoratedMap.put(decorator, result);
}
return result;
}
/** *//**
* Dispose all of the cached images
*/
public static void disposeImages() {
for (Iterator I = m_ClassImageMap.values().iterator(); I.hasNext();)
((Image) I.next()).dispose();
m_ClassImageMap.clear();
//
for (Iterator I = m_ImageToDecoratorMap.values().iterator(); I.hasNext();) {
HashMap decoratedMap = (HashMap) I.next();
for (Iterator J = decoratedMap.values().iterator(); J.hasNext();) {
Image image = (Image) J.next();
image.dispose();
}
}
}
/** *//**
* Dispose cached images in specified section
* @param section the section do dispose
*/
public static void disposeImages(String section) {
for (Iterator I = m_ClassImageMap.keySet().iterator(); I.hasNext();) {
String key = (String) I.next();
if (!key.startsWith(section + '|'))
continue;
Image image = m_ClassImageMap.get(key);
image.dispose();
I.remove();
}
}
//////////////////////////////
// Font support
//////////////////////////////
/** *//**
* Maps font names to fonts
*/
private static HashMap<String, Font> m_FontMap = new HashMap<String, Font>();
/** *//**
* Maps fonts to their bold versions
*/
private static HashMap<Font, Font> m_FontToBoldFontMap = new HashMap<Font, Font>();
/** *//**
* Returns a font based on its name, height and style
* @param name String The name of the font
* @param height int The height of the font
* @param style int The style of the font
* @return Font The font matching the name, height and style
*/
public static Font getFont(String name, int height, int style) {
return getFont(name, height, style, false, false);
}
/** *//**
* Returns a font based on its name, height and style.
* Windows-specific strikeout and underline flags are also supported.
* @param name String The name of the font
* @param size int The size of the font
* @param style int The style of the font
* @param strikeout boolean The strikeout flag (warning: Windows only)
* @param underline boolean The underline flag (warning: Windows only)
* @return Font The font matching the name, height, style, strikeout and underline
*/
public static Font getFont(String name, int size, int style, boolean strikeout, boolean underline) {
String fontName = name + '|' + size + '|' + style + '|' + strikeout + '|' + underline;
Font font = m_FontMap.get(fontName);
if (font == null) {
FontData fontData = new FontData(name, size, style);
if (strikeout || underline) {
try {
Class logFontClass = Class.forName("org.eclipse.swt.internal.win32.LOGFONT"); //$NON-NLS-1$
Object logFont = FontData.class.getField("data").get(fontData); //$NON-NLS-1$
if (logFont != null && logFontClass != null) {
if (strikeout) {
logFontClass.getField("lfStrikeOut").set(logFont, new Byte((byte) 1)); //$NON-NLS-1$
}
if (underline) {
logFontClass.getField("lfUnderline").set(logFont, new Byte((byte) 1)); //$NON-NLS-1$
}
}
} catch (Throwable e) {
System.err.println(
"Unable to set underline or strikeout" + " (probably on a non-Windows platform). " + e); //$NON-NLS-1$ //$NON-NLS-2$
}
}
font = new Font(Display.getCurrent(), fontData);
m_FontMap.put(fontName, font);
}
return font;
}
/** *//**
* Return a bold version of the give font
* @param baseFont Font The font for whoch a bold version is desired
* @return Font The bold version of the give font
*/
public static Font getBoldFont(Font baseFont) {
Font font = m_FontToBoldFontMap.get(baseFont);
if (font == null) {
FontData fontDatas[] = baseFont.getFontData();
FontData data = fontDatas[0];
font = new Font(Display.getCurrent(), data.getName(), data.getHeight(), SWT.BOLD);
m_FontToBoldFontMap.put(baseFont, font);
}
return font;
}
/** *//**
* Dispose all of the cached fonts
*/
public static void disposeFonts() {
for (Iterator iter = m_FontMap.values().iterator(); iter.hasNext();)
((Font) iter.next()).dispose();
m_FontMap.clear();
}
//////////////////////////////
// CoolBar support
//////////////////////////////
/** *//**
* Fix the layout of the specified CoolBar
* @param bar CoolBar The CoolBar that shgoud be fixed
*/
public static void fixCoolBarSize(CoolBar bar) {
CoolItem[] items = bar.getItems();
// ensure that each item has control (at least empty one)
for (int i = 0; i < items.length; i++) {
CoolItem item = items[i];
if (item.getControl() == null)
item.setControl(new Canvas(bar, SWT.NONE) {
@Override
public Point computeSize(int wHint, int hHint, boolean changed) {
return new Point(20, 20);
}
});
}
// compute size for each item
for (int i = 0; i < items.length; i++) {
CoolItem item = items[i];
Control control = item.getControl();
control.pack();
Point size = control.getSize();
item.setSize(item.computeSize(size.x, size.y));
}
}
//////////////////////////////
// Cursor support
//////////////////////////////
/** *//**
* Maps IDs to cursors
*/
private static HashMap<Integer, Cursor> m_IdToCursorMap = new HashMap<Integer, Cursor>();
/** *//**
* Returns the system cursor matching the specific ID
* @param id int The ID value for the cursor
* @return Cursor The system cursor matching the specific ID
*/
public static Cursor getCursor(int id) {
Integer key = new Integer(id);
Cursor cursor = m_IdToCursorMap.get(key);
if (cursor == null) {
cursor = new Cursor(Display.getDefault(), id);
m_IdToCursorMap.put(key, cursor);
}
return cursor;
}
/** *//**
* Dispose all of the cached cursors
*/
public static void disposeCursors() {
for (Iterator iter = m_IdToCursorMap.values().iterator(); iter.hasNext();)
((Cursor) iter.next()).dispose();
m_IdToCursorMap.clear();
}
}
运行效果：
