SWT中使用JFreeChart（無(wú)需SWT_AWT）
好像從1.03開(kāi)始Jfc就已經(jīng)提供了在SWT中使用JFC的專(zhuān)用包和類(lèi)，只是沒(méi)有人寫(xiě)這些東西而已~今天我就貼一些Demo，以后再也不用SWT_AWT了~
更重要的是SWT_AWT主要是將AWT嵌入SWT中，而ChartComposite則是將chart對象直接轉換為SWT中的東東，連右鍵都是SWT的了~
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1
/**//* ===========================================================
2
* JFreeChart : a free chart library for the Java(tm) platform
3 * ===========================================================
4 *
5
* (C) Copyright 2000-2007, by Object Refinery Limited and Contributors.
6 *
7 * Project Info: http://www.jfree.org/jfreechart/index.html
8 *
9 * This library is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU Lesser General Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17 * License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22 * USA.
23 *
24 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25 * in the United States and other countries.]
26 *
27 * ---------------------
28 * SWTBarChartDemo1.java
29 * ---------------------
30 * (C) Copyright 2006, 2007, by Object Refinery Limited and Contributors.
31 *
32 * Original Author: David Gilbert (for Object Refinery Limited);
33 * Contributor(s):
34 *
35 * Changes
36 * -------
37 * 23-Aug-2006 : New class (DG);
38 *
39 */
40
41package org.jfree.experimental.chart.swt.demo;
42
43import java.awt.Color;
44
45import org.eclipse.swt.SWT;
46import org.eclipse.swt.layout.FillLayout;
47import org.eclipse.swt.widgets.Display;
48import org.eclipse.swt.widgets.Shell;
49import org.jfree.chart.ChartFactory;
50import org.jfree.chart.JFreeChart;
51import org.jfree.chart.axis.CategoryAxis;
52import org.jfree.chart.axis.CategoryLabelPositions;
53import org.jfree.chart.axis.NumberAxis;
54import org.jfree.chart.plot.CategoryPlot;
55import org.jfree.chart.plot.PlotOrientation;
56import org.jfree.chart.renderer.category.BarRenderer;
57import org.jfree.data.category.CategoryDataset;
58import org.jfree.data.category.DefaultCategoryDataset;
59import org.jfree.experimental.chart.swt.ChartComposite;
60
61/** *//**
62 * An SWT demo.
63 */
64public class SWTBarChartDemo1 {
65
66 /** *//**
67 * Returns a sample dataset.
68 *
69 * @return The dataset.
70 */
71 private static CategoryDataset createDataset() {
72
73 // row keys
74 String series1 = "First";
75 String series2 = "Second";
76 String series3 = "Third";
77
78 // column keys
79 String category1 = "Category 1";
80 String category2 = "Category 2";
81 String category3 = "Category 3";
82 String category4 = "Category 4";
83 String category5 = "Category 5";
84
85 // create the dataset
86 DefaultCategoryDataset dataset = new DefaultCategoryDataset();
87
88 dataset.addValue(1.0, series1, category1);
89 dataset.addValue(4.0, series1, category2);
90 dataset.addValue(3.0, series1, category3);
91 dataset.addValue(5.0, series1, category4);
92 dataset.addValue(5.0, series1, category5);
93
94 dataset.addValue(5.0, series2, category1);
95 dataset.addValue(7.0, series2, category2);
96 dataset.addValue(6.0, series2, category3);
97 dataset.addValue(8.0, series2, category4);
98 dataset.addValue(4.0, series2, category5);
99
100 dataset.addValue(4.0, series3, category1);
101 dataset.addValue(3.0, series3, category2);
102 dataset.addValue(2.0, series3, category3);
103 dataset.addValue(3.0, series3, category4);
104 dataset.addValue(6.0, series3, category5);
105
106 return dataset;
107
108 }
109
110 /** *//**
111 * Creates a sample chart.
112 *
113 * @param dataset the dataset.
114 *
115 * @return The chart.
116 */
117 private static JFreeChart createChart(CategoryDataset dataset) {
118
119 // create the chart
120 JFreeChart chart = ChartFactory.createBarChart(
121 "Bar Chart Demo", // chart title
122 "Category", // domain axis label
123 "Value", // range axis label
124 dataset, // data
125 PlotOrientation.VERTICAL, // orientation
126 true, // include legend
127 true, // tooltips?
128 false // URLs?
129 );
130
131 // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART
132
133 // set the background color for the chart
134 chart.setBackgroundPaint(Color.white);
135
136 // get a reference to the plot for further customisation
137 CategoryPlot plot = (CategoryPlot) chart.getPlot();
138 plot.setBackgroundPaint(Color.lightGray);
139 plot.setDomainGridlinePaint(Color.white);
140 plot.setDomainGridlinesVisible(true);
141 plot.setRangeGridlinePaint(Color.white);
142
143 // set the range axis to display integers only
144 final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
145 rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
146
147 // disable bar outlines
148 BarRenderer renderer = (BarRenderer) plot.getRenderer();
149 renderer.setDrawBarOutline(false);
150
151 CategoryAxis domainAxis = plot.getDomainAxis();
152 domainAxis.setCategoryLabelPositions(
153 CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0)
154 );
155 // OPTIONAL CUSTOMISATION COMPLETED.
156
157 return chart;
158
159 }
160
161 /** *//**
162 * Starting point for the demonstration application.
163 *
164 * @param args ignored.
165 */
166 public static void main( String[] args )
167 {
168 JFreeChart chart = createChart(createDataset());
169 Display display = new Display();
170 Shell shell = new Shell(display);
171 shell.setSize(600, 300);
172 shell.setLayout(new FillLayout());
173 shell.setText("Test for jfreechart running with SWT");
174 final ChartComposite frame = new ChartComposite(shell, SWT.NONE, chart,
175 true);
176 frame.pack();
177 shell.open();
178 while (!shell.isDisposed()) {
179 if (!display.readAndDispatch())
180 display.sleep();
181 }
182 }
183
184}
185
186
187
這個(gè)是JFC里面自帶的一個(gè)例子，例子里面使用了一個(gè)ChartComposite來(lái)放置chart對象~這樣對使用者來(lái)說(shuō)更加方便了，其實(shí)JFC的SWT包下還有好幾個(gè)很好用的類(lèi)，只是沒(méi)有文檔而已~2
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更重要的是SWT_AWT主要是將AWT嵌入SWT中，而ChartComposite則是將chart對象直接轉換為SWT中的東東，連右鍵都是SWT的了~
聲明：
永久性關(guān)閉本Blog，內容已經(jīng)遷往 www.lign.name 全新的空間，全新的內容，敬請關(guān)注！
posted on 2007-08-21 09:22 阿南 閱讀(1079) 評論(1) 編輯 收藏 所屬分類(lèi): 西安java用戶(hù)群 、Eclipse-SWT
