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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 JavaScriptViewer 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
75 Display display = Display.getDefault( );
76 Shell shell = new Shell( display );
77 shell.setSize( 600, 400 );
78 shell.setLayout( new GridLayout( ) );
79
80 JavaScriptViewer jsViewer = new JavaScriptViewer( shell,
81 SWT.NO_BACKGROUND );
82 jsViewer.setLayoutData( new GridData( GridData.FILL_BOTH ) );
83 jsViewer.addPaintListener( jsViewer );
84
85 Composite cBottom = new Composite( shell, SWT.NONE );
86 cBottom.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
87 cBottom.setLayout( new RowLayout( ) );
88
89 description = new Label( shell, SWT.NONE );
90 description.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
91 description.setText( "beforeDrawAxisLabel( Axis, Label, IChartScriptContext )" + "\nbeforeDrawAxisTitle( Axis, Label, IChartScriptContext )" );
94 Label la = new Label( cBottom, SWT.NONE );
95
96 la.setText( "Choose: " ); cbType = new Combo( cBottom, SWT.DROP_DOWN | SWT.READ_ONLY );
98 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 );
106
107 btn = new Button( cBottom, SWT.NONE );
108 btn.setText( "Update" ); btn.addSelectionListener( jsViewer );
110
111 shell.open( );
112 while ( !shell.isDisposed( ) )
113 {
114 if ( !display.readAndDispatch( ) )
115 display.sleep( );
116 }
117 display.dispose( );
118 }
119
120
123 JavaScriptViewer( Composite parent, int style )
124 {
125 super( parent, style );
126 final PluginSettings ps = PluginSettings.instance( );
127 try
128 {
129 idr = ps.getDevice( "dv.SWT" ); }
131 catch ( ChartException pex )
132 {
133 logger.log( pex );
134 }
135 cm = ScriptCharts.createChart_Axis( );
136 }
137
138
143 public final void paintControl( PaintEvent e )
144 {
145 Rectangle d = this.getClientArea( );
146 Image imgChart = new Image( this.getDisplay( ), d );
147 GC gcImage = new GC( imgChart );
148 idr.setProperty( IDeviceRenderer.GRAPHICS_CONTEXT, gcImage );
149
150 Bounds bo = BoundsImpl.create( 0, 0, d.width, d.height );
151 bo.scale( 72d / idr.getDisplayServer( ).getDpiResolution( ) );
152
153 Generator gr = Generator.instance( );
154 if ( bNeedsGeneration )
155 {
156 bNeedsGeneration = false;
157 try
158 {
159 gcs = gr.build( idr.getDisplayServer( ),
160 cm,
161 bo,
162 null,
163 null,
164 null );
165 }
166 catch ( ChartException ce )
167 {
168 ce.printStackTrace( );
169 }
170 }
171
172 try
173 {
174 gr.render( idr, gcs );
175 GC gc = e.gc;
176 gc.drawImage( imgChart, d.x, d.y );
177 }
178 catch ( ChartException gex )
179 {
180 showException( e.gc, gex );
181 }
182 }
183
184
189 public void widgetSelected( SelectionEvent e )
190 {
191 if ( e.widget.equals( btn ) )
192 {
193 int iSelection = cbType.getSelectionIndex( );
194 switch ( iSelection )
195 {
196 case 0 :
197 cm = ScriptCharts.createChart_Axis( );
198 description.setText( "beforeDrawAxisLabel( Axis, Label, IChartScriptContext )" + "\nbeforeDrawAxisTitle( Axis, Label, IChartScriptContext )" ); break;
201 case 1 :
202 cm = ScriptCharts.createChart_DataPoints( );
203 description.setText( "beforeDrawDataPointLabel( DataPointHint, Label, IChartScriptContext )" ); break;
205 case 2 :
206 cm = ScriptCharts.createChart_Marker( );
207 description.setText( "beforeDrawMarkerLine( Axis, MarkerLine, IChartScriptContext )" + "\nbeforeDrawMarkerRange( Axis, MarkerRange, IChartScriptContext )" ); break;
210 case 3 :
211 cm = ScriptCharts.createChart_Series( );
212 description.setText( "beforeDrawSeries( Series, ISeriesRenderer, IChartScriptContext )" ); break;
214 case 4 :
215 cm = ScriptCharts.createChart_SeriesTitle( );
216 description.setText( "beforeDrawSeriesTitle( Series, Label, IChartScriptContext )" ); break;
218 case 5 :
219 cm = ScriptCharts.createChart_Block( );
220 description.setText( "beforeDrawBlock( Block, IChartScriptContext )" ); break;
222 case 6 :
223 cm = ScriptCharts.createChart_Legend( );
224 description.setText( "beforeDrawLegendEntry( Label, IChartScriptContext )" ); break;
226 }
227 bNeedsGeneration = true;
228 this.redraw( );
229 }
230 }
231
232
237 public void widgetDefaultSelected( SelectionEvent e )
238 {
239 }
241
242 private final void showException( GC g2d, Exception ex )
243 {
244 String sWrappedException = ex.getClass( ).getName( );
245 Throwable th = ex;
246 while ( ex.getCause( ) != null )
247 {
248 ex = (Exception ) ex.getCause( );
249 }
250 String sException = ex.getClass( ).getName( );
251 if ( sWrappedException.equals( sException ) )
252 {
253 sWrappedException = null;
254 }
255
256 String sMessage = null;
257 if ( th instanceof BirtException )
258 {
259 sMessage = ( (BirtException) th ).getLocalizedMessage( );
260 }
261 else
262 {
263 sMessage = ex.getMessage( );
264 }
265
266 if ( sMessage == null )
267 {
268 sMessage = "<null>"; }
270 StackTraceElement [] stea = ex.getStackTrace( );
271 Point d = this.getSize( );
272
273 Device dv = Display.getCurrent( );
274 Font fo = new Font( dv, "Courier", SWT.BOLD, 16 ); g2d.setFont( fo );
276 FontMetrics fm = g2d.getFontMetrics( );
277 g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
278 g2d.fillRectangle( 20, 20, d.x - 40, d.y - 40 );
279 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
280 g2d.drawRectangle( 20, 20, d.x - 40, d.y - 40 );
281 g2d.setClipping( 20, 20, d.x - 40, d.y - 40 );
282 int x = 25, y = 20 + fm.getHeight( );
283 g2d.drawString( "Exception:", x, y ); x += g2d.textExtent( "Exception:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
286 g2d.drawString( sException, x, y );
287 x = 25;
288 y += fm.getHeight( );
289 if ( sWrappedException != null )
290 {
291 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
292 g2d.drawString( "Wrapped In:", x, y ); x += g2d.textExtent( "Wrapped In:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
295 g2d.drawString( sWrappedException, x, y );
296 x = 25;
297 y += fm.getHeight( );
298 }
299 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
300 y += 10;
301 g2d.drawString( "Message:", x, y ); x += g2d.textExtent( "Message:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLUE ) );
304 g2d.drawString( sMessage, x, y );
305 x = 25;
306 y += fm.getHeight( );
307 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
308 y += 10;
309 g2d.drawString( "Trace:", x, y ); x = 40;
311 y += fm.getHeight( );
312 g2d.setForeground( dv.getSystemColor( SWT.COLOR_DARK_GREEN ) );
313 for ( int i = 0; i < stea.length; i++ )
314 {
315 g2d.drawString( stea[i].getClassName( ) + ":" + stea[i].getMethodName( )
317 + "(...):" + stea[i].getLineNumber( ), x, y );
319 x = 40;
320 y += fm.getHeight( );
321 }
322 fo.dispose( );
323 }
324 }
325 |
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