学步园

      本文主要是实现了Menu（菜单）、ToolBar（工具条）、CoolBar，这些在平时做界面中都是很常用的，相比以前的简单控件，这些控件的使用更加灵活以及困难。

      Menu的实现了其中很多常用的类型，比如单选、复选菜单以及右键菜单，ToolBar实现了单选、复选以及下拉方式，而CoolBar作为一种灵活的控件，你可以在上面放置控件，并且能够实现任意的拖拽。

实现代码：

import org.eclipse.swt.SWT;<br /> import org.eclipse.swt.events.MenuEvent;<br /> import org.eclipse.swt.events.MenuListener;<br /> import org.eclipse.swt.events.SelectionEvent;<br /> import org.eclipse.swt.events.SelectionListener;<br /> import org.eclipse.swt.graphics.Color;<br /> import org.eclipse.swt.graphics.Point;<br /> import org.eclipse.swt.graphics.Rectangle;<br /> import org.eclipse.swt.layout.FillLayout;<br /> import org.eclipse.swt.widgets.Button;<br /> import org.eclipse.swt.widgets.Combo;<br /> import org.eclipse.swt.widgets.Composite;<br /> import org.eclipse.swt.widgets.CoolBar;<br /> import org.eclipse.swt.widgets.CoolItem;<br /> import org.eclipse.swt.widgets.Display;<br /> import org.eclipse.swt.widgets.Label;<br /> import org.eclipse.swt.widgets.Menu;<br /> import org.eclipse.swt.widgets.MenuItem;<br /> import org.eclipse.swt.widgets.Shell;<br /> import org.eclipse.swt.widgets.ToolBar;<br /> import org.eclipse.swt.widgets.ToolItem;</p> <p>/**<br /> * @author XiangJie<br /> *<br /> */<br /> public class Test_MenuAndToolBar {</p> <p> public void test_MenuAndToolBar(Composite parent) {<br /> show_ControlMenu(parent);<br /> show_ToolBar(parent);<br /> showCoolBar(parent);<br /> }</p> <p> private void showCoolBar(Composite parent) {<br /> Composite tempCom = new Composite(parent, SWT.BORDER);<br /> tempCom.setLayout(new FillLayout());</p> <p> CoolBar coolBar = new CoolBar(tempCom, SWT.BORDER);<br /> // coolBar.setLayout(new FillLayout());</p> <p> CoolItem item1 = new CoolItem(coolBar, SWT.NONE);</p> <p> Combo combo = new Combo(coolBar, SWT.NONE | SWT.READ_ONLY);<br /> combo.setItems(new String[] { "test1", "test2" });</p> <p> Point p = combo.computeSize(SWT.DEFAULT, SWT.DEFAULT);<br /> combo.setSize(p);<br /> Point p2 = item1.computeSize(p.x, p.y);<br /> item1.setSize(p2);<br /> item1.setControl(combo);</p> <p> CoolItem item2 = new CoolItem(coolBar, SWT.NONE);</p> <p> Button testButton = new Button(coolBar, SWT.NONE);<br /> testButton.setText("Test!");</p> <p> p = testButton.computeSize(SWT.DEFAULT, SWT.DEFAULT);<br /> combo.setSize(p);<br /> p2 = item2.computeSize(p.x, p.y);<br /> item2.setSize(p2);<br /> item2.setControl(testButton);</p> <p> }</p> <p> private void show_ToolBar(Composite parent) {</p> <p> Composite tempCom = new Composite(parent, SWT.BORDER);<br /> tempCom.setLayout(new FillLayout());</p> <p> final ToolBar toolBar = new ToolBar(tempCom, SWT.WRAP);<br /> ToolItem pItem = new ToolItem(toolBar, SWT.PUSH);<br /> pItem.setText("Push me!");</p> <p> new ToolItem(toolBar, SWT.SEPARATOR);</p> <p> ToolItem cItem1 = new ToolItem(toolBar, SWT.CHECK);<br /> cItem1.setText("Check me1!");</p> <p> ToolItem cItem2 = new ToolItem(toolBar, SWT.CHECK);<br /> cItem2.setText("Check me2!");</p> <p> new ToolItem(toolBar, SWT.SEPARATOR);</p> <p> ToolItem rItem1 = new ToolItem(toolBar, SWT.RADIO);<br /> rItem1.setText("Radio me1!");</p> <p> ToolItem rItem2 = new ToolItem(toolBar, SWT.RADIO);<br /> rItem2.setText("Radio me2!");</p> <p> final ToolItem droItem = new ToolItem(toolBar, SWT.DROP_DOWN);<br /> droItem.setText("Drop down me");</p> <p> final Menu testMenu = new Menu(tempCom.getShell(), SWT.POP_UP);<br /> (new MenuItem(testMenu, SWT.NONE)).setText("Just to Test!");</p> <p> droItem.addSelectionListener(new SelectionListener() {</p> <p> @Override<br /> public void widgetSelected(SelectionEvent e) {<br /> // TODO Auto-generated method stub<br /> boolean flat = testMenu.getVisible();</p> <p> if (!flat) {<br /> showMenu();<br /> } else {<br /> testMenu.setVisible(false);<br /> }<br /> }</p> <p> private void showMenu() {<br /> Rectangle rct = droItem.getBounds();</p> <p> Point point = toolBar.toDisplay(rct.x, rct.y + rct.height);</p> <p> testMenu.setLocation(point);</p> <p> testMenu.setVisible(true);</p> <p> }</p> <p> @Override<br /> public void widgetDefaultSelected(SelectionEvent e) {<br /> // TODO Auto-generated method stub</p> <p> }<br /> });</p> <p> }</p> <p> private void show_ControlMenu(Composite parent) {<br /> Composite tempCom = new Composite(parent, SWT.BORDER);<br /> tempCom.setLayout(new FillLayout());</p> <p> final Label testLabel = new Label(tempCom, SWT.BORDER | SWT.WRAP);<br /> testLabel.setText("Please use right click!");</p> <p> testLabel.setBackground(new Color(null, 255, 0, 0));</p> <p> final Menu menu = new Menu(testLabel);<br /> testLabel.setMenu(menu);</p> <p> MenuItem item1 = new MenuItem(menu, SWT.NONE);<br /> item1.setText("test!");</p> <p> menu.addMenuListener(new MenuListener() {</p> <p> @Override<br /> public void menuShown(MenuEvent e) {<br /> // TODO Auto-generated method stub<br /> // boolean flat = menu.getVisible();<br /> testLabel.setText("Menu is visiable!");<br /> menu.setVisible(true);<br /> }</p> <p> @Override<br /> public void menuHidden(MenuEvent e) {<br /> // TODO Auto-generated method stub<br /> testLabel.setText("Menu is hidden!");<br /> menu.setVisible(false);<br /> }<br /> });<br /> }</p> <p> public void shellMenuTest(Shell shell) {<br /> Menu menu = new Menu(shell, SWT.BAR | SWT.DROP_DOWN);</p> <p> MenuItem item1 = new MenuItem(menu, SWT.CASCADE);<br /> item1.setText("&Open");</p> <p> Menu suMenu = new Menu(shell, SWT.DROP_DOWN);// new Menu(item1);<br /> item1.setMenu(suMenu);</p> <p> MenuItem item2 = new MenuItem(suMenu, SWT.RADIO);<br /> item2.setText("&Save");</p> <p> MenuItem item3 = new MenuItem(suMenu, SWT.RADIO);<br /> item3.setText("&Test");</p> <p> new MenuItem(suMenu, SWT.SEPARATOR);</p> <p> MenuItem item4 = new MenuItem(suMenu, SWT.CHECK);<br /> item4.setText("&Check");</p> <p> MenuItem item5 = new MenuItem(suMenu, SWT.CHECK);<br /> item5.setText("&SCheck");</p> <p> new MenuItem(suMenu, SWT.SEPARATOR);</p> <p> MenuItem item6 = new MenuItem(suMenu, SWT.CASCADE);<br /> item6.setText("&Menu");</p> <p> Menu suMenu2 = new Menu(shell, SWT.DROP_DOWN);// new Menu(item1);<br /> item6.setMenu(suMenu2);</p> <p> MenuItem item7 = new MenuItem(suMenu2, SWT.CASCADE);<br /> item7.setText("&First");</p> <p> shell.setMenuBar(menu);<br /> }</p> <p> /**<br /> * create data: 2010-1-14</br><br /> *<br /> * @author XiangJie<br /> * @param args<br /> *<br /> */<br /> public static void main(String[] args) {<br /> // TODO Auto-generated method stub<br /> Display display = new Display();<br /> Shell shell = new Shell(display);<br /> shell.setText("SWT Menu and ToolBar:");<br /> shell.setLayout(new FillLayout(SWT.VERTICAL));</p> <p> Test_MenuAndToolBar test = new Test_MenuAndToolBar();<br /> test.shellMenuTest(shell);<br /> test.test_MenuAndToolBar(shell);</p> <p> shell.pack();<br /> shell.open();<br /> while (!shell.isDisposed()) {<br /> if (!display.readAndDispatch())<br /> display.sleep();<br /> }<br /> display.dispose();<br /> }<br /> }<br />

效果演示：

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