這段時間一直比較忙，答應幫朋友完善的一個RCP畢業設計，直到這兩天才有時間動手。這個RCP有生成報表的需求，首先想到的是JFreeChart和BIRT的Chart引擎。因為對JFreeChart比較熟悉，就選擇用它做報表。
ChartView.java創建一個View類，這里JFreeChart報表參考了SWTTimeSeriesDemo，當然之前得首先加入jfreechart-1.0.5.jar、jfreechart-1.0.5-swt.jar和jcommon1.0.9.jar。
/** *//**
* @author zyh2k
*
*/
public class ChartView extends ViewPart 
{
private ChartComposite frame;
/**//* (non-Javadoc)
* @see org.eclipse.ui.part.WorkbenchPart#createPartControl(org.eclipse.swt.widgets.Composite)
*/
@Override
public void createPartControl(Composite parent) {
// TODO Auto-generated method stub
final JFreeChart chart = createChart(createDataset());
/**//*final Display display = new Display();
Shell shell = new Shell(display);
shell.setSize(600, 300);
shell.setLayout(new FillLayout());
shell.setText("Time series demo for jfreechart running with SWT");*/
frame = new ChartComposite(parent, SWT.NONE, chart, true);
FillLayout fillLayout = new FillLayout();
fillLayout.type = SWT.VERTICAL;
frame.setLayout(fillLayout);
frame.setSize(600, 300);
frame.setDisplayToolTips(true);
frame.setHorizontalAxisTrace(false);
frame.setVerticalAxisTrace(false);
/**//*shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}*/
}
/** *//**
* 用戶退出時，將面板隱藏
*/
public void logoff() {
if (frame != null && !frame.isDisposed())
frame.setVisible(false);
}
/** *//**
* 顯示面板內容
*/
public void show() {
if (frame != null && !frame.isDisposed())
frame.setVisible(true);
}
/**//* (non-Javadoc)
* @see org.eclipse.ui.part.WorkbenchPart#setFocus()
*/
@Override
public void setFocus() {
// TODO Auto-generated method stub
}
/** *//**
* Creates a chart.
*
* @param dataset a dataset.
*
* @return A chart.
*/
private static JFreeChart createChart(XYDataset dataset) {
JFreeChart chart = ChartFactory.createTimeSeriesChart(
"宿舍水電費月報表", // title
"日期", // x-axis label
"費用", // y-axis label
dataset, // data
true, // create legend?
true, // generate tooltips?
false // generate URLs?
);
chart.setBackgroundPaint(Color.white);
XYPlot plot = (XYPlot) chart.getPlot();
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setRangeGridlinePaint(Color.white);
plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
plot.setDomainCrosshairVisible(true);
plot.setRangeCrosshairVisible(true);
XYItemRenderer r = plot.getRenderer();
if (r instanceof XYLineAndShapeRenderer) {
XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
renderer.setBaseShapesVisible(true);
renderer.setBaseShapesFilled(true);
}
DateAxis axis = (DateAxis) plot.getDomainAxis();
axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));
return chart;
}
/** *//**
* Creates a dataset, consisting of two series of monthly data.
*
* @return The dataset.
*/
private static XYDataset createDataset() {
TimeSeriesCollection dataset = new TimeSeriesCollection();
DbOperate db = DwesFactory.getDbOperate();
List rooms = db.getRoomAll();
List datas = db.getScoreAll();
for (Iterator iter = rooms.iterator(); iter.hasNext();) {
String room = (String) iter.next();
TimeSeries roomSeries = new TimeSeries(room, Month.class);
for (Iterator dataIter = datas.iterator(); dataIter.hasNext();) {
Score score = (Score) dataIter.next();
if(score.getName().equals(room)) {
int[] dataObj = DateUtils.getNowSingleObject(score.getMonth());
roomSeries.add(new Month(dataObj[1], dataObj[2]), score.getScore());
}
}
dataset.addSeries(roomSeries);
}
return dataset;
}
}NavigatorView.java調用ChartView
/** *//**
* 結點雙擊事件
*/
private class MyDoubleClickListener implements IDoubleClickListener {
public void doubleClick(DoubleClickEvent event) {
IStructuredSelection sel = (IStructuredSelection) event.getSelection();
NavigatorEntry entry = (NavigatorEntry) sel.getFirstElement();
// 取得IWorkbenchPage
IWorkbenchPage workbenchPage = getViewSite().getPage();
if(entry.getName().equals("報表輸出")){
String viewId = ChartView.class.getName();
ChartView view;
try {
view = (ChartView) workbenchPage.showView(viewId);
view.show();//顯示面板內容
} catch (PartInitException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
IEditorInput editorInput = entry.getEditorInput();
String editorID = entry.getEditorId();
// 如果editorInput或editorID為空則中斷返回
if (editorInput == null || editorID == null)
return;
//搜索使用editorInput對象對應的編輯器
IEditorPart editor = workbenchPage.findEditor(editorInput);
// 如果此編輯器已經存在，則將它設為當前編輯器，否則重新打開一個編輯器。
if (editor != null) {
workbenchPage.bringToTop(editor);
} else {
try {
editor = workbenchPage.openEditor(editorInput, editorID);
} catch (PartInitException e2) {
e2.printStackTrace();
}
}
}
}
}
plugin.xml
<!-- 加入視圖 -->
<view
name="報表視圖"
icon="icons/project.gif"
category="cn.com.wen.dwes.view"
class="cn.com.wen.dwes.archive.ChartView"
id="cn.com.wen.dwes.archive.ChartView">
</view>
</extension>
MANIFEST.MF加入引用的包
Bundle-ClassPath: dwes.jar,
lib/mysql-connector-java-5.0.3-bin.jar,
lib/jcommon-1.0.9.jar,
lib/jfreechart-1.0.5.jar,
lib/jfreechart-1.0.5-swt.jar
運行的效果
運行時把鼠標可以報表上左右拖動或選擇一個區域放大，有點像BIRO報表的向下鉆取。由于SWT的JFreeChart目前還是experimental，想把它運用在商業化項目的朋友慎重考慮。
posted on 2007-06-07 10:03
凍僵的魚 閱讀(3200)
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