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1
11
12 package org.eclipse.birt.chart.examples.api.viewer;
13
14 import org.eclipse.birt.chart.device.IDeviceRenderer;
15 import org.eclipse.birt.chart.examples.api.script.JavaScriptViewer;
16 import org.eclipse.birt.chart.exception.ChartException;
17 import org.eclipse.birt.chart.factory.GeneratedChartState;
18 import org.eclipse.birt.chart.factory.Generator;
19 import org.eclipse.birt.chart.log.ILogger;
20 import org.eclipse.birt.chart.log.Logger;
21 import org.eclipse.birt.chart.model.Chart;
22 import org.eclipse.birt.chart.model.attribute.Bounds;
23 import org.eclipse.birt.chart.model.attribute.impl.BoundsImpl;
24 import org.eclipse.birt.chart.util.PluginSettings;
25 import org.eclipse.birt.core.exception.BirtException;
26 import org.eclipse.swt.SWT;
27 import org.eclipse.swt.events.PaintEvent;
28 import org.eclipse.swt.events.SelectionEvent;
29 import org.eclipse.swt.graphics.Device;
30 import org.eclipse.swt.graphics.Font;
31 import org.eclipse.swt.graphics.FontMetrics;
32 import org.eclipse.swt.graphics.GC;
33 import org.eclipse.swt.graphics.Image;
34 import org.eclipse.swt.graphics.Point;
35 import org.eclipse.swt.graphics.Rectangle;
36 import org.eclipse.swt.layout.GridData;
37 import org.eclipse.swt.layout.GridLayout;
38 import org.eclipse.swt.layout.RowLayout;
39 import org.eclipse.swt.widgets.Button;
40 import org.eclipse.swt.widgets.Combo;
41 import org.eclipse.swt.widgets.Composite;
42 import org.eclipse.swt.widgets.Display;
43 import org.eclipse.swt.widgets.Label;
44 import org.eclipse.swt.widgets.Shell;
45 import org.eclipse.swt.events.PaintListener;
46 import org.eclipse.swt.events.SelectionListener;
47
48 public class DialChartViewer extends Composite implements
49 PaintListener,
50 SelectionListener
51 {
52
53 private IDeviceRenderer idr = null;
54
55 private Chart cm = null;
56
57 private static Combo cbType = null;
58
59 private static Button btn = null;
60
61 private GeneratedChartState gcs = null;
62
63 private boolean bNeedsGeneration = true;
64
65 private static ILogger logger = Logger.getLogger( JavaScriptViewer.class.getName( ) );
66
71 public static void main( String  [] args )
72 {
73
74 Display display = Display.getDefault( );
75 Shell shell = new Shell( display );
76 shell.setSize( 600, 400 );
77 shell.setLayout( new GridLayout( ) );
78
79 DialChartViewer dcViewer = new DialChartViewer( shell,
80 SWT.NO_BACKGROUND );
81 dcViewer.setLayoutData( new GridData( GridData.FILL_BOTH ) );
82 dcViewer.addPaintListener( dcViewer );
83
84 Composite cBottom = new Composite( shell, SWT.NONE );
85 cBottom.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
86 cBottom.setLayout( new RowLayout( ) );
87
88 Label la = new Label( cBottom, SWT.NONE );
89
90 la.setText( "Choose: " ); cbType = new Combo( cBottom, SWT.DROP_DOWN | SWT.READ_ONLY );
92 cbType.add( "Single Dial, Multi Regions" ); cbType.add( "Multi Dials, Multi Regions" ); cbType.add( "Single Dial, Single Region" ); cbType.add( "Multi Dials, Single Region" ); cbType.select( 0 );
97
98 btn = new Button( cBottom, SWT.NONE );
99 btn.setText( "Update" ); btn.addSelectionListener( dcViewer );
101
102 shell.open( );
103 while ( !shell.isDisposed( ) )
104 {
105 if ( !display.readAndDispatch( ) )
106 display.sleep( );
107 }
108 display.dispose( );
109 }
110
111
114 DialChartViewer( Composite parent, int style )
115 {
116 super( parent, style );
117 final PluginSettings ps = PluginSettings.instance( );
118 try
119 {
120 idr = ps.getDevice( "dv.SWT" ); }
122 catch ( ChartException pex )
123 {
124 logger.log( pex );
125 }
126 cm = PrimitiveCharts.createSDialMRegionChart( );
127 }
128
129
134 public final void paintControl( PaintEvent e )
135 {
136 Rectangle d = this.getClientArea( );
137 Image imgChart = new Image( this.getDisplay( ), d );
138 GC gcImage = new GC( imgChart );
139 idr.setProperty( IDeviceRenderer.GRAPHICS_CONTEXT, gcImage );
140
141 Bounds bo = BoundsImpl.create( 0, 0, d.width, d.height );
142 bo.scale( 72d / idr.getDisplayServer( ).getDpiResolution( ) );
143
144 Generator gr = Generator.instance( );
145 if ( bNeedsGeneration )
146 {
147 bNeedsGeneration = false;
148 try
149 {
150 gcs = gr.build( idr.getDisplayServer( ),
151 cm,
152 bo,
153 null,
154 null,
155 null );
156 }
157 catch ( ChartException ce )
158 {
159 ce.printStackTrace( );
160 }
161 }
162
163 try
164 {
165 gr.render( idr, gcs );
166 GC gc = e.gc;
167 gc.drawImage( imgChart, d.x, d.y );
168 }
169 catch ( ChartException gex )
170 {
171 showException( e.gc, gex );
172 }
173 }
174
175
180 public void widgetSelected( SelectionEvent e )
181 {
182 if ( e.widget.equals( btn ) )
183 {
184 int iSelection = cbType.getSelectionIndex( );
185 switch ( iSelection )
186 {
187 case 0 :
188 cm = PrimitiveCharts.createSDialMRegionChart( );
189 break;
190 case 1 :
191 cm = PrimitiveCharts.createMDialMRegionChart( );
192 break;
193 case 2 :
194 cm = PrimitiveCharts.createSDialSRegionChart( );
195 break;
196 case 3 :
197 cm = PrimitiveCharts.createMDialSRegionChart( );
198 break;
199 }
200 bNeedsGeneration = true;
201 this.redraw( );
202 }
203 }
204
205
210 public void widgetDefaultSelected( SelectionEvent e )
211 {
212
214 }
215
216 private final void showException( GC g2d, Exception ex )
217 {
218 String sWrappedException = ex.getClass( ).getName( );
219 Throwable th = ex;
220 while ( ex.getCause( ) != null )
221 {
222 ex = (Exception ) ex.getCause( );
223 }
224 String sException = ex.getClass( ).getName( );
225 if ( sWrappedException.equals( sException ) )
226 {
227 sWrappedException = null;
228 }
229
230 String sMessage = null;
231 if ( th instanceof BirtException )
232 {
233 sMessage = ( (BirtException) th ).getLocalizedMessage( );
234 }
235 else
236 {
237 sMessage = ex.getMessage( );
238 }
239
240 if ( sMessage == null )
241 {
242 sMessage = "<null>"; }
244 StackTraceElement [] stea = ex.getStackTrace( );
245 Point d = this.getSize( );
246
247 Device dv = Display.getCurrent( );
248 Font fo = new Font( dv, "Courier", SWT.BOLD, 16 ); g2d.setFont( fo );
250 FontMetrics fm = g2d.getFontMetrics( );
251 g2d.setBackground( dv.getSystemColor( SWT.COLOR_WHITE ) );
252 g2d.fillRectangle( 20, 20, d.x - 40, d.y - 40 );
253 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
254 g2d.drawRectangle( 20, 20, d.x - 40, d.y - 40 );
255 g2d.setClipping( 20, 20, d.x - 40, d.y - 40 );
256 int x = 25, y = 20 + fm.getHeight( );
257 g2d.drawString( "Exception:", x, y ); x += g2d.textExtent( "Exception:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
260 g2d.drawString( sException, x, y );
261 x = 25;
262 y += fm.getHeight( );
263 if ( sWrappedException != null )
264 {
265 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
266 g2d.drawString( "Wrapped In:", x, y ); x += g2d.textExtent( "Wrapped In:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_RED ) );
269 g2d.drawString( sWrappedException, x, y );
270 x = 25;
271 y += fm.getHeight( );
272 }
273 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
274 y += 10;
275 g2d.drawString( "Message:", x, y ); x += g2d.textExtent( "Message:" ).x + 5; g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLUE ) );
278 g2d.drawString( sMessage, x, y );
279 x = 25;
280 y += fm.getHeight( );
281 g2d.setForeground( dv.getSystemColor( SWT.COLOR_BLACK ) );
282 y += 10;
283 g2d.drawString( "Trace:", x, y ); x = 40;
285 y += fm.getHeight( );
286 g2d.setForeground( dv.getSystemColor( SWT.COLOR_DARK_GREEN ) );
287 for ( int i = 0; i < stea.length; i++ )
288 {
289 g2d.drawString( stea[i].getClassName( ) + ":" + stea[i].getMethodName( )
291 + "(...):" + stea[i].getLineNumber( ), x, y );
293 x = 40;
294 y += fm.getHeight( );
295 }
296 fo.dispose( );
297 }
298 }
299 |
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