Source Code Cross Referenced for RenderContextImpl.java in  » GIS » udig-1.1 » net » refractions » udig » project » internal » render » impl » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » udig 1.1 » net.refractions.udig.project.internal.render.impl 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * <copyright></copyright> $Id$
003:         */package net.refractions.udig.project.internal.render.impl;
004:
005:        import java.awt.Color;
006:        import java.awt.Graphics2D;
007:        import java.awt.Point;
008:        import java.awt.Rectangle;
009:        import java.awt.geom.AffineTransform;
010:        import java.awt.image.BufferedImage;
011:
012:        import net.refractions.udig.catalog.IGeoResource;
013:        import net.refractions.udig.project.ILayer;
014:        import net.refractions.udig.project.ProjectBlackboardConstants;
015:        import net.refractions.udig.project.internal.Layer;
016:        import net.refractions.udig.project.internal.ProjectPlugin;
017:        import net.refractions.udig.project.internal.Trace;
018:        import net.refractions.udig.project.internal.impl.AbstractContextImpl;
019:        import net.refractions.udig.project.internal.render.RenderContext;
020:        import net.refractions.udig.project.internal.render.SelectionLayer;
021:        import net.refractions.udig.project.render.ILabelPainter;
022:
023:        import org.geotools.data.DefaultQuery;
024:        import org.geotools.data.Query;
025:        import org.geotools.filter.Filter;
026:        import org.geotools.filter.FilterFactory;
027:        import org.geotools.filter.FilterFactoryFinder;
028:        import org.geotools.filter.FilterType;
029:        import org.geotools.filter.IllegalFilterException;
030:
031:        /**
032:         * The default implementation of the RenderContext interface.
033:         * 
034:         * @author Jesse
035:         * @since 1.0.0
036:         */
037:        public class RenderContextImpl extends AbstractContextImpl implements 
038:                RenderContext {
039:
040:            /**
041:             * The cached value of the '{@link #getImage() <em>Image</em>}' attribute.
042:             * 
043:             * @see #getImage()
044:             */
045:            protected volatile BufferedImage image = null;
046:
047:            public static final BufferedImage dummyImage = new BufferedImage(1,
048:                    1, BufferedImage.TYPE_4BYTE_ABGR);
049:
050:            private static final String LABEL_PAINTER = "LABEL_PAINTER";
051:
052:            /**
053:             * The cached value of the '{@link #getLayerInternal() <em>Layer Internal</em>}' reference.
054:             * 
055:             * @see #getLayerInternal()
056:             */
057:            protected Layer layerInternal = null;
058:
059:            /**
060:             * The cached value of the '{@link #getGeoResourceInternal() <em>Geo Resource Internal</em>}'
061:             * attribute. 
062:             * 
063:             * @see #getGeoResourceInternal()
064:             */
065:            protected IGeoResource geoResourceInternal = null;
066:
067:            private boolean selection;
068:
069:            public RenderContextImpl() {
070:                super ();
071:            }
072:
073:            public RenderContextImpl(boolean selection) {
074:                super ();
075:                this .selection = selection;
076:            }
077:
078:            public RenderContextImpl(RenderContextImpl impl) {
079:                super (impl);
080:                setGeoResourceInternal(impl.getGeoResourceInternal());
081:                setLayerInternal(impl.getLayerInternal());
082:            }
083:
084:            public BufferedImage getImage() {
085:                int width = getMapDisplay().getWidth(), height = getMapDisplay()
086:                        .getHeight();
087:                return getImage(width, height);
088:            }
089:
090:            public synchronized BufferedImage getImage(int width, int height) {
091:
092:                if (width < 1 || height < 1)
093:                    return dummyImage;
094:
095:                if (image == null || image.getWidth() < width
096:                        || image.getHeight() < height) {
097:                    synchronized (this ) {
098:                        if (image == null || image.getWidth() < width
099:                                || image.getHeight() < height) {
100:                            image = new BufferedImage(width, height,
101:                                    BufferedImage.TYPE_INT_ARGB);
102:                        }
103:
104:                    }
105:                }
106:                return image;
107:            }
108:
109:            public Query getQuery(ILayer layer) {
110:                return layer.getQuery(selection);
111:            }
112:
113:            /**
114:             * <p>
115:             * Default behavior is to return 0 if no layers are associated otherwise returns the zorder of
116:             * the first layer in the list.
117:             * </p>
118:             * 
119:             * @return Default behavior is to return 0 if no layers are associated otherwise returns the
120:             *         zorder of the first layer in the list. <!-- end-user-doc -->
121:             */
122:            public int getZorder() {
123:                if (getLayer() == null) {
124:                    return 0;
125:                }
126:                return getLayer().getZorder();
127:            }
128:
129:            public boolean isVisible() {
130:                return getLayer().isVisible();
131:            }
132:
133:            public Layer getLayerInternal() {
134:                return layerInternal;
135:            }
136:
137:            public void setLayerInternal(Layer newLayerInternal) {
138:                layerInternal = newLayerInternal;
139:            }
140:
141:            public IGeoResource getGeoResourceInternal() {
142:                return geoResourceInternal;
143:            }
144:
145:            public void setGeoResourceInternal(
146:                    IGeoResource newGeoResourceInternal) {
147:                geoResourceInternal = newGeoResourceInternal;
148:            }
149:
150:            public String toString() {
151:                StringBuffer result = new StringBuffer();
152:                result.append("[layer: "); //$NON-NLS-1$
153:                if (layerInternal instanceof  SelectionLayer)
154:                    result.append("Selection "); //$NON-NLS-1$
155:                result
156:                        .append(layerInternal == null ? "null" : layerInternal.getName()); //$NON-NLS-1$
157:                result.append(", geoResource: "); //$NON-NLS-1$
158:                result
159:                        .append(geoResourceInternal == null ? "null" : geoResourceInternal.getIdentifier().toString()); //$NON-NLS-1$
160:                result.append(']');
161:                return result.toString();
162:            }
163:
164:            public boolean hasContent(Point screenLocation) {
165:                BufferedImage image = getImage();
166:
167:                int alpha = image.getAlphaRaster().getSample(screenLocation.x,
168:                        screenLocation.y, 0);
169:
170:                return alpha > 0;
171:
172:                // ColorModel cm = image.getColorModel();
173:                // SampleModel sm = image.getSampleModel();
174:                // WritableRaster raster = image.getRaster();
175:                //        
176:                //        
177:                // Object array;
178:                // switch( sm.getTransferType() ){
179:                // case DataBuffer.TYPE_BYTE:
180:                // array = raster.getPixel( screenLocation.x, screenLocation.y, new
181:                // byte[
182:                // raster.getNumBands() ] );
183:                // break;
184:                // case DataBuffer.TYPE_USHORT:
185:                // array = raster.getPixel( screenLocation.x, screenLocation.y, new
186:                // short[
187:                // raster.getNumBands() ] );
188:                // break;
189:                // case DataBuffer.TYPE_INT:
190:                // array = raster.getPixel( screenLocation.x, screenLocation.y, new int[
191:                // raster.getNumBands() ] );
192:                // break;
193:                // default:
194:                // return false; // I give up
195:                // }
196:                // cm.getAlpha( array );
197:                //        return false;
198:            }
199:
200:            public BufferedImage copyImage(Rectangle rectangle) {
201:                return null;
202:            }
203:
204:            public int compareTo(RenderContext o) {
205:                if (o == null)
206:                    return 1;
207:                if (o == this )
208:                    return 0;
209:                int result = getLayer().compareTo(o.getLayer());
210:
211:                // don't have same rendermanager then they are not the same.
212:                if (result == 0 && getRenderManager() != o.getRenderManager())
213:                    return 1;
214:                return result;
215:            }
216:
217:            public void init(RenderContext renderContext) {
218:                setMapInternal(renderContext.getMapInternal());
219:                setRenderManagerInternal(renderContext
220:                        .getRenderManagerInternal());
221:                setLayerInternal(renderContext.getLayerInternal());
222:                setGeoResourceInternal(renderContext.getGeoResourceInternal());
223:            }
224:
225:            public void clearImage() {
226:                clearImage(new Rectangle(0, 0, getMapDisplay().getWidth(),
227:                        getMapDisplay().getHeight()));
228:            }
229:
230:            public Query getFeatureQuery() {
231:                Query query = getLayer().getQuery(
232:                        getLayer() instanceof  SelectionLayer);
233:                if (query.getFilter() == Filter.ALL)
234:                    return query;
235:                FilterFactory ff = FilterFactoryFinder.createFilterFactory();
236:                Object editFilter = getLayer().getBlackboard().get(
237:                        ProjectBlackboardConstants.MAP__RENDERING_FILTER);
238:                if (!(editFilter instanceof  Filter))
239:                    return query;
240:
241:                Filter newFilter;
242:                try {
243:                    if (query.getFilter() == Filter.NONE) {
244:                        newFilter = ff.createLogicFilter((Filter) editFilter,
245:                                FilterType.LOGIC_NOT);
246:                    } else {
247:                        editFilter = ff.createLogicFilter((Filter) editFilter,
248:                                FilterType.LOGIC_NOT);
249:                        newFilter = ff.createLogicFilter(query.getFilter(),
250:                                (Filter) editFilter, FilterType.LOGIC_AND);
251:                    }
252:                } catch (IllegalFilterException e) {
253:                    return query;
254:                }
255:                return new DefaultQuery(query.getTypeName(), query
256:                        .getNamespace(), newFilter, query.getMaxFeatures(),
257:                        query.getPropertyNames(), query.getHandle());
258:            }
259:
260:            public synchronized void clearImage(Rectangle paintArea) {
261:                if (ProjectPlugin.isDebugging(Trace.RENDER)) {
262:                    ProjectPlugin.trace(getClass(), "", null); //$NON-NLS-1$
263:                }
264:                Graphics2D graphics = getImage().createGraphics();
265:                graphics.setBackground(new Color(0, 0, 0, 0));
266:                graphics.setTransform(new AffineTransform());
267:                graphics.clearRect(paintArea.x, paintArea.y, paintArea.width,
268:                        paintArea.height);
269:                graphics.dispose();
270:            }
271:
272:            public void setStatus(int status) {
273:                if (layerInternal != null
274:                        && !(layerInternal instanceof  SelectionLayer))
275:                    layerInternal.setStatus(status);
276:            }
277:
278:            public ILayer getLayer() {
279:                return getLayerInternal();
280:            }
281:
282:            public IGeoResource getGeoResource() {
283:                return getGeoResourceInternal();
284:            }
285:
286:            public int getStatus() {
287:                if (getLayer() == null)
288:                    return -1;
289:                return getLayer().getStatus();
290:            }
291:
292:            public String getStatusMessage() {
293:                if (getLayer() == null)
294:                    return null;
295:                return getLayer().getStatusMessage();
296:            }
297:
298:            public void setStatusMessage(String message) {
299:                if (getLayerInternal() != null)
300:                    getLayerInternal().setStatusMessage(message);
301:            }
302:
303:            public void dispose() {
304:                image = null;
305:            }
306:
307:            public RenderContextImpl copy() {
308:                return new RenderContextImpl(this );
309:            }
310:
311:            @Override
312:            public int hashCode() {
313:                final int PRIME = 31;
314:                int result = super .hashCode();
315:                result = PRIME
316:                        * result
317:                        + ((geoResourceInternal == null) ? 0
318:                                : geoResourceInternal.hashCode());
319:                result = PRIME
320:                        * result
321:                        + ((layerInternal == null) ? 0 : layerInternal
322:                                .hashCode());
323:                return result;
324:            }
325:
326:            @Override
327:            public boolean equals(Object obj) {
328:                if (!(obj instanceof  RenderContextImpl))
329:                    return false;
330:                if (this  == obj)
331:                    return true;
332:                if (!super .equals(obj))
333:                    return false;
334:                if (getClass() != obj.getClass())
335:                    return false;
336:                final RenderContextImpl other = (RenderContextImpl) obj;
337:                if (geoResourceInternal == null) {
338:                    if (other.geoResourceInternal != null)
339:                        return false;
340:                } else if (!geoResourceInternal
341:                        .equals(other.geoResourceInternal))
342:                    return false;
343:                if (layerInternal == null) {
344:                    if (other.layerInternal != null)
345:                        return false;
346:                } else if (!layerInternal.equals(other.layerInternal))
347:                    return false;
348:                return true;
349:            }
350:
351:            public synchronized ILabelPainter getLabelPainter() {
352:                ILabelPainter labelPainter = (ILabelPainter) getMap()
353:                        .getBlackboard().get(LABEL_PAINTER);
354:                if (labelPainter == null) {
355:                    labelPainter = new UDIGLabelCache();
356:                    getMap().getBlackboard().put(LABEL_PAINTER, labelPainter);
357:                }
358:                return labelPainter;
359:            }
360:        } // RenderContextImpl
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