swt example

/**@author WangJinTao,MengQingChang 2006 */ package com.ops.mdb.ex; import org.eclipse.swt.*; import org.eclipse.swt.widgets.*; import org.eclipse.swt.events.*; import org.eclipse.swt.graphics.*; import org.eclipse.swt.layout.*; public class ToolBarExample3 { private ToolBar toolBar; private ToolItem item; private ToolItem item1; private ToolItem item2; private Composite composite; private Combo combo; private Label labelA; private Label labela; private Label labelB; private Label labelb; private Text textdisplay; static String Text = ""; private Point point; public ToolBarExample3() { final Display display = Display.getDefault(); final Shell shell = new Shell(); shell.setSize(500, 300); shell.setText("ToolBar实例"); // Shell使用行布局方式，使工具栏项按钮依次排列 shell.setLayout(new RowLayout(SWT.VERTICAL)); // 工具栏采用水平放置样式 toolBar = new ToolBar(shell, SWT.HORIZONTAL); { /** * 调用createToolItem()自定义方法，第一个参表示将ToolItem构造在工具栏上 ， * 第二个参数：按钮为PUSH类型，第三个参数表示按钮上的名称， * 第四个参数表示为提示性标签文字， 该语句可以写成： * ToolItem item=new ToolItem(toolBar，SWT.PUSH); * item.setText("PUSH按钮"); * item.setToolTipText("单击弹出提示性对话框"); */ item = createToolItem(toolBar, SWT.PUSH, "PUSH按钮", "单击弹出提示性对话框"); // 单击PUSH按钮触发该事件，弹出MessageBox对话框 item.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { // /定义MessageBox对话框 MessageBox messageBox = new MessageBox(shell, SWT.ICON_INFORMATION | SWT.OK); messageBox.setMessage("这是PUSH类型的按钮"); messageBox.open(); } }); } { // 定义一个带下拉菜单的按钮 item1 = createToolItem(toolBar, SWT.DROP_DOWN, "DROP_DOWN按钮", "带下拉菜单的按钮"); final Menu menu = new Menu(shell, SWT.PUSH); // 定义五个菜单项 for (int i = 0; i < 5; i++) { MenuItem menuitem = new MenuItem(menu, SWT.CHECK); menuitem.setText("MenuItem " + i); } // 单击该工具栏项时弹出下拉菜单 item1.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { // 当鼠标选中ARROW类型按钮则执行下面的程序 if (event.detail == SWT.ARROW) { // 获取item大小即按钮大小 Rectangle bound = item1.getBounds(); // 对下拉菜单位置进行定位 point = toolBar.toDisplay(bound.x, bound.y + bound.height); menu.setLocation(point); menu.setVisible(true); } } }); } { item = createToolItem(toolBar, SWT.CHECK, "CHECK按钮", "单击状态将改变"); item.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { ToolItem item = (ToolItem) event.widget; // 获得工具栏上按钮的状态 labela.setText(item.getSelection() ? "按下 " : "弹起 "); } }); } { item2 = new ToolItem(toolBar, SWT.SEPARATOR); combo = new Combo(toolBar, SWT.READ_ONLY); combo.setItems(new String[] { "Eclipse", "SWT", "JFace", "AWT", "Swing", "MyEclipse", "Lomboz" }); combo.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { int selectionIndex = combo.getSelectionIndex(); if (selectionIndex == 0) { // 在当下拉列表项被选中时，该列表项将显示在文本框中 textdisplay.setText(combo.getText()); } else if (selectionIndex == 1) { textdisplay.setText(combo.getText()); } else if (selectionIndex == 2) { textdisplay.setText(combo.getText()); } else if (selectionIndex == 3) { textdisplay.setText(combo.getText()); } else if (selectionIndex == 4) { textdisplay.setText(combo.getText()); } else if (selectionIndex == 5) { textdisplay.setText(combo.getText()); } else if (selectionIndex == 6) { textdisplay.setText(combo.getText()); } } }); item2.setControl(combo); item2.setWidth(80);// 设置Combo的宽度 } { item = createToolItem(toolBar, SWT.RADIO, "RADIO1按钮 ", "单击显示该按钮被选中"); item.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { labelb.setText("RADIO1按钮"); } }); item = createToolItem(toolBar, SWT.RADIO, "RADIO2按钮", "单击显示该按钮被选中"); item.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { labelb.setText("RADIO2按钮"); } }); } composite = new Composite(shell, SWT.NONE); // 面板采用网格式布局，定义2列 composite.setLayout(new GridLayout(2, false)); // 标签分隔符 Label label = new Label(composite, SWT.HORIZONTAL | SWT.SEPARATOR); GridData grida = new GridData(GridData.FILL_HORIZONTAL); grida.horizontalSpan = 2;// 水平抢占2列 label.setLayoutData(grida); labelA = new Label(composite, SWT.NONE); labelA.setText("CHECK按钮当前状态:"); labela = new Label(composite, SWT.NONE); labela.setText("弹起"); // 标签分隔符 Label lab = new Label(composite, SWT.HORIZONTAL | SWT.SEPARATOR); GridData grid = new GridData(GridData.FILL_HORIZONTAL); grid.horizontalSpan = 2; lab.setLayoutData(grid); labelB = new Label(composite, SWT.RIGHT); labelB.setText("当前选中的RADIO按钮为:"); labelb = new Label(composite, SWT.NONE); labelb.setText("当前无选中的RADIO按钮"); // 定义一个文本框 textdisplay = new Text(composite, SWT.BORDER); GridData gridData = new GridData(GridData.FILL_BOTH); gridData.horizontalSpan = 2;// 水平抢占2列 gridData.heightHint = 20;// 高度为20个像素 textdisplay.setLayoutData(gridData); // 鼠标移动事件 toolBar.addMouseMoveListener(new MouseMoveListener() { public void mouseMove(MouseEvent e) { item = toolBar.getItem(new Point(e.x, e.y)); String name = ""; if (item != null) { // 获取工具栏项的名字，即工具栏上按钮的名称 name = item.getText(); } if (!Text.equals(name)) { // 在文本上显示获取的工具栏项的名称 textdisplay.setText(name); Text = name; } } }); shell.open(); shell.layout(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } } private ToolItem createToolItem(ToolBar parent, int type, String text, String toolTipText) { ToolItem item = new ToolItem(parent, type); item.setText(text);// 设置item名称 item.setToolTipText(toolTipText);// 设置提示性标签文字 return item; } public static void main(String[] args) { new ToolBarExample3(); } }