|
1
11
12 package org.eclipse.birt.chart.examples.api.script;
13
14 import org.eclipse.birt.chart.device.IDeviceRenderer;
15 import org.eclipse.birt.chart.exception.ChartException;
16 import org.eclipse.birt.chart.factory.GeneratedChartState;
17 import org.eclipse.birt.chart.factory.Generator;
18 import org.eclipse.birt.chart.log.ILogger;
19 import org.eclipse.birt.chart.log.Logger;
20 import org.eclipse.birt.chart.model.Chart;
21 import org.eclipse.birt.chart.model.attribute.Bounds;
22 import org.eclipse.birt.chart.model.attribute.impl.BoundsImpl;
23 import org.eclipse.birt.chart.util.PluginSettings;
24 import org.eclipse.birt.core.exception.BirtException;
25 import org.eclipse.swt.SWT;
26 import org.eclipse.swt.events.PaintEvent;
27 import org.eclipse.swt.events.PaintListener;
28 import org.eclipse.swt.events.SelectionEvent;
29 import org.eclipse.swt.events.SelectionListener;
30 import org.eclipse.swt.graphics.Device;
31 import org.eclipse.swt.graphics.Font;
32 import org.eclipse.swt.graphics.FontMetrics;
33 import org.eclipse.swt.graphics.GC;
34 import org.eclipse.swt.graphics.Image;
35 import org.eclipse.swt.graphics.Point;
36 import org.eclipse.swt.graphics.Rectangle;
37 import org.eclipse.swt.layout.GridData;
38 import org.eclipse.swt.layout.GridLayout;
39 import org.eclipse.swt.layout.RowLayout;
40 import org.eclipse.swt.widgets.Button;
41 import org.eclipse.swt.widgets.Combo;
42 import org.eclipse.swt.widgets.Composite;
43 import org.eclipse.swt.widgets.Display;
44 import org.eclipse.swt.widgets.Label;
45 import org.eclipse.swt.widgets.Shell;
46
47 public class JavaViewer extends Composite implements
48 PaintListener,
49 SelectionListener
50 {
51
52 private IDeviceRenderer idr = null;
53
54 private Chart cm = null;
55
56 private transient static Label description = null;
57
58 private static Combo cbType = null;
59
60 private static Button btn = null;
61
62 private GeneratedChartState gcs = null;
63
64 private boolean bNeedsGeneration = true;
65
66 private static ILogger logger = Logger.getLogger( JavaScriptViewer.class.getName( ) );
67
72 public static void main( String  [] args )
73 {
74 Display display = Display.getDefault( );
75 Shell shell = new Shell( display );
76 shell.setSize( 600, 400 );
77 shell.setLayout( new GridLayout( ) );
78
79 JavaViewer jViewer = new JavaViewer( shell, SWT.NO_BACKGROUND );
80 jViewer.setLayoutData( new GridData( GridData.FILL_BOTH ) );
81 jViewer.addPaintListener( jViewer );
82
83 Composite cBottom = new Composite( shell, SWT.NONE );
84 cBottom.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
85 cBottom.setLayout( new RowLayout( ) );
86
87 description = new Label( shell, SWT.NONE );
88 description.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
89 description.setText( "beforeDrawAxisLabel( Axis, Label, IChartScriptContext )" + "\nbeforeDrawAxisTitle( Axis, Label, IChartScriptContext )" );
92 Label la = new Label( cBottom, SWT.NONE );
93
94 la.setText( "Choose: " ); cbType = new Combo( cBottom, SWT.DROP_DOWN | SWT.READ_ONLY );
96 cbType.add( "Axis" ); cbType.add( "DataPoints" ); cbType.add( "Marker" ); cbType.add( "Series" ); cbType.add( "Series Title" ); cbType.add( "Block" ); cbType.add( "Legend" ); cbType.select( 0 );
104
105 btn = new Button( cBottom, SWT.NONE );
106 btn.setText( "Update" ); btn.addSelectionListener( jViewer );
108
109 shell.open( );
110 while ( !shell.isDisposed( ) )
111 {
112 if ( !display.readAndDispatch( ) )
113 display.sleep( );
114 }
115 display.dispose( );
116
117 }
118
119
122 JavaViewer( Composite parent, int style )
123 {
124 super( parent, style );
125 final PluginSettings ps = PluginSettings.instance( );
126 try
127 {
128 idr = ps.getDevice( "dv.SWT" ); }
130 catch ( ChartException pex )
131 {
132 logger.log( pex );
133 }
134 cm = ScriptCharts.createJChart_Axis( );
135 }
136
137
142 public final void paintControl( PaintEvent e )
143 {
144 Rectangle d = this.getClientArea( );
145 Image imgChart = new Image( this.getDisplay( ), d );
146 GC gcImage = new GC( imgChart );
147 idr.setProperty( IDeviceRenderer.GRAPHICS_CONTEXT, gcImage );
148
149 Bounds bo = BoundsImpl.create( 0, 0, d.width, d.height );
150 bo.scale( 72d / idr.getDisplayServer( ).getDpiResolution( ) );
151
152 Generator gr = Generator.instance( );
153 if ( bNeedsGeneration )
154 {
155 bNeedsGeneration = false;
156 try
157 {
158 gcs = gr.build( idr.getDisplayServer( ),
159 cm,
160 bo,
161 null,
162 null,
163 null );
164 }
165 catch ( ChartException ce )
166 {
167 ce.printStackTrace( );
168 }
169 }
170
171 try
172 {
173 gr.render( idr, gcs );
174 GC gc = e.gc;
175 gc.drawImage( imgChart, d.x, d.y );
176 }
177 catch ( ChartException gex )
178 {
179 showException( e.gc, gex );
180 }
181 }
182
183
188 public void widgetSelected( SelectionEvent e )
189 {
190 if ( e.widget.equals( btn ) )
191 {
192 int iSelection = cbType.getSelectionIndex( );
193 switch ( iSelection )
194 {
195 case 0 :
196 cm = ScriptCharts.createJChart_Axis( );
197 description.setText( "beforeDrawAxisLabel( Axis, Label, IChartScriptContext )" + "\nbeforeDrawAxisTitle( Axis, Label, IChartScriptContext )" ); break;
200 case 1 :
201 cm = ScriptCharts.createJChart_DataPoints( );
202 description.setText( "beforeDrawDataPointLabel( DataPointHint, Label, IChartScriptContext )" ); break;
204 case 2 :
205 cm = ScriptCharts.createJChart_Marker( );
206 description.setText( "beforeDrawMarkerLine( Axis, MarkerLine, IChartScriptContext )" + "\nbeforeDrawMarkerRange( Axis, MarkerRange, IChartScriptContext )" ); break;
209 case 3 :
210 cm = ScriptCharts.createJChart_Series( );
211 description.setText( "beforeDrawSeries( Series, ISeriesRenderer, IChartScriptContext )" ); break;
213 case 4 :
214 cm = ScriptCharts.createJChart_SeriesTitle( );
215 description.setText( "beforeDrawSeriesTitle( Series, Label, IChartScriptContext )" ); break;
217 case 5 :
218 cm = ScriptCharts.createJChart_Block( );
219 description.setText( "beforeDrawBlock( Block, IChartScriptContext )" ); break;
221 case 6 :
222 cm = ScriptCharts.createJChart_Legend( );
223 description.setText( "beforeDrawLegendEntry( Label, IChartScriptContext )" ); break;
225 }
226 bNeedsGeneration = true;
227 this.redraw( );
228 }
229 }
230
231
236 public void widgetDefaultSelected( SelectionEvent e )
237 {
238 }
240
241 private final void showException( GC g2d, Exception ex )
242 {
243 String sWrappedException = ex.getClass( ).getName( );
244 Throwable th = ex;
245 while ( ex.getCause( ) != null )
246 {
247 ex = (Exception ) ex.getCause( );
248 }
249 String sException = ex.getClass( ).getName( );
250 if ( sWrappedException.equals( sException ) )
251 {
252 sWrappedException = null;
253 }
254
255 String sMessage = null;
256 if ( th instanceof BirtException )
257 {
258 sMessage = ( (BirtException) th ).getLocalizedMessage( );
259 }
260 else
261 {
262 sMessage = ex.getMessage( );
263 }
264
265 if ( sMessage == null )
266 {
267 sMessage = "<null>"; }
269 StackTraceElement [] stea = ex.getStackTrace( );
270 Point d = this.getSize( );
271
272 Device dv = Display.getCurrent( );
273 Font fo = new Font( dv, "Courier", SWT.BOLD, 16 ); g2d.setFont( fo );
275 FontMetrics fm = g2d.getFontMetrics( );
276 g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
277 g2d.fillRectangle( 20, 20, d.x - 40, d.y - 40 );
278 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
279 g2d.drawRectangle( 20, 20, d.x - 40, d.y - 40 );
280 g2d.setClipping( 20, 20, d.x - 40, d.y - 40 );
281 int x = 25, y = 20 + fm.getHeight( );
282 g2d.drawString( "Exception:", x, y ); x += g2d.textExtent( "Exception:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
285 g2d.drawString( sException, x, y );
286 x = 25;
287 y += fm.getHeight( );
288 if ( sWrappedException != null )
289 {
290 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
291 g2d.drawString( "Wrapped In:", x, y ); x += g2d.textExtent( "Wrapped In:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
294 g2d.drawString( sWrappedException, x, y );
295 x = 25;
296 y += fm.getHeight( );
297 }
298 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
299 y += 10;
300 g2d.drawString( "Message:", x, y ); x += g2d.textExtent( "Message:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLUE ) );
303 g2d.drawString( sMessage, x, y );
304 x = 25;
305 y += fm.getHeight( );
306 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
307 y += 10;
308 g2d.drawString( "Trace:", x, y ); x = 40;
310 y += fm.getHeight( );
311 g2d.setForeground( dv.getSystemColor( SWT.COLOR_DARK_GREEN ) );
312 for ( int i = 0; i < stea.length; i++ )
313 {
314 g2d.drawString( stea[i].getClassName( ) + ":" + stea[i].getMethodName( )
316 + "(...):" + stea[i].getLineNumber( ), x, y );
318 x = 40;
319 y += fm.getHeight( );
320 }
321 fo.dispose( );
322 }
323 }
324 |
Popular Tags |
Java API By Example, From Geeks To Geeks.