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Posted on 2010-09-13 10:37 TWaver 閱讀(2061) 評論(0) 編輯 收藏
一大堆圖表放一起，綜合呈現各種數據統計，估計所有的程序都有這種需求。老外喜歡叫它Dashboard，中文還真沒太有合適的對應的詞，有人干脆翻譯為“儀表盤”，挺怪異的。
有了TWaver的一大堆Chart，做Dashboard就不難了。用GridLayout把一大堆Chart放在一個JPanel中，再做一個Border，放上一些操控的按鈕，例如最小化、最大化之類，就有模有樣了。
先看這個效果圖。
實在沒什么技術含量，就廢話不多說了，直接上代碼。先做一個例子Chart。你可以多用一些TWaver提供的其他各種Chart來豐富視覺效果：
1  public class MyBarChart extends BarChart  {
2
3 private Element data1 = new Node();
4 private Element data2 = new Node();
5
6  public MyBarChart() {
7 this.setBarType(TWaverConst.BAR_TYPE_GROUP);
8 this.setShadowOffset(10);
9 this.setYScaleTextVisible(true);
10 this.setYScaleMinTextVisible(true);
11 this.setUpperLimit(60);
12 this.setYScaleValueGap(10);
13
14 this.addXScaleText("Jan");
15 this.addXScaleText("Feb");
16 this.addXScaleText("Mar");
17
18 this.addElement(data1, "USD", TWaverUtil.getRandomColor());
19 this.addElement(data2, "RMB", TWaverUtil.getRandomColor());
20
21 this.addValue(data1, getRandomData(), getRandomData(), getRandomData());
22 this.addValue(data2, getRandomData(), getRandomData(), getRandomData());
23 }
24
25 private int getRandomData() {
26 return TWaverUtil.getRandomInt(60);
27 }
28
29 private void addElement(Element element, String name, Color color) {
30 element.setName(name);
31 element.putChartColor(color);
32 box.addElement(element);
33 }
34
35 private void addValue(Element element, double value1, double value2, double value3) {
36 element.addChartValue(value1);
37 element.addChartValue(value2);
38 element.addChartValue(value3);
39 }
40 }
再做主程序。一個GridLayout的Panel加上一個Border，放在窗口中顯示即可：
1public class Test extends JComponent {
2 public Test() {
3 this.setBorder(BorderFactory.createLineBorder(Color.lightGray, 1));
4 this.setLayout(new BorderLayout());
5 this.add(createHeaderPane(), BorderLayout.NORTH);
6 this.add(createChart(), BorderLayout.CENTER);
7 }
8
9 private JComponent createChart() {
10 return new MyBarChart();
11 }
12
13 private JPanel createHeaderPane() {
14 JPanel headerPane = new JPanel(new BorderLayout());
15 headerPane.setOpaque(false);
16 headerPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
17 headerPane.add(createNorthPane(), BorderLayout.NORTH);
18
19 JTextArea txtDescription = new JTextArea("Here is the description for this portlet.");
20 txtDescription.setEditable(false);
21 txtDescription.setEnabled(false);
22 txtDescription.setOpaque(false);
23 txtDescription.setFont(new Font("Dialog", Font.ITALIC, 12));
24 txtDescription.setDisabledTextColor(Color.gray);
25 txtDescription.setLineWrap(true);
26 txtDescription.setBorder(createUnderlineBorder());
27 headerPane.add(txtDescription, BorderLayout.CENTER);
28
29 return headerPane;
30 }
31
32 private JPanel createNorthPane() {
33 JPanel northPane = new JPanel(new BorderLayout());
34 northPane.setOpaque(false);
35 JLabel lbTitle = new JLabel("Month Sales");
36 lbTitle.setFont(new Font("Dialog", Font.BOLD, 12));
37 lbTitle.setForeground(new Color(0, 0, 255, 100));
38 northPane.add(lbTitle, BorderLayout.CENTER);
39 JPanel buttonPane = createButtonPane();
40 northPane.add(buttonPane, BorderLayout.EAST);
41 return northPane;
42 }
43
44 private JPanel createButtonPane() {
45 JPanel buttonPane = new JPanel(new FlowLayout(FlowLayout.RIGHT, 5, 0));
46 buttonPane.setOpaque(false);
47 JButton btnDropDown = new JButton();
48 btnDropDown.setOpaque(false);
49 btnDropDown.setMargin(new Insets(0, 0, 0, 0));
50 btnDropDown.setIcon(TWaverUtil.getIcon("/dashboard/dropdown.png"));
51 btnDropDown.setBorder(null);
52 buttonPane.add(btnDropDown);
53 JButton btnClose = new JButton();
54 btnClose.setMargin(new Insets(0, 0, 0, 0));
55 btnClose.setIcon(TWaverUtil.getIcon("/dashboard/close.png"));
56 btnClose.setBorder(null);
57 btnClose.setOpaque(false);
58 btnClose.addActionListener(new ActionListener() {
59 public void actionPerformed(ActionEvent e) {
60 Test.this.setVisible(false);
61 }
62 });
63 buttonPane.add(btnClose);
64 return buttonPane;
65 }
66
67 private static Border createUnderlineBorder() {
68 return new Border() {
69 public void paintBorder(Component c,
70 Graphics g,
71 int x,
72 int y,
73 int width,
74 int height) {
75 g.setColor(Color.lightGray);
76 g.drawLine(x,
77 y + height - 2,
78 x + width,
79 y + height - 2);
80 }
81
82 public Insets getBorderInsets(Component c) {
83 return new Insets(0, 0, 2, 0);
84 }
85
86 public boolean isBorderOpaque() {
87 return true;
88 }
89 };
90 }
91
92 public static void main(String[] args) {
93 JFrame frame = new JFrame();
94 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
95 JPanel pane = new JPanel(new GridLayout(3, 3, 10, 10));
96 pane.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
97 pane.setBackground(Color.white);
98 frame.add(pane);
99 for (int i = 0; i < 9; i++) {
100 pane.add(new Test());
101 }
102 frame.setSize(1000, 700);
103 TWaverUtil.centerWindow(frame);
104 frame.setTitle("TWaver Dashboard");
105 frame.setVisible(true);
106 }
107}
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