Source Code Cross Referenced for AbstractShapeNode.java in  » 6.0-JDK-Modules » j2me » com » sun » perseus » model » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » com.sun.perseus.model 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:        package com.sun.perseus.model;
027:
028:        import com.sun.perseus.j2d.GraphicsProperties;
029:        import com.sun.perseus.j2d.PaintServer;
030:        import com.sun.perseus.j2d.PaintTarget;
031:        import com.sun.perseus.j2d.PathSupport;
032:        import com.sun.perseus.j2d.RenderGraphics;
033:        import com.sun.perseus.j2d.Tile;
034:
035:        import com.sun.perseus.util.SVGConstants;
036:
037:        import org.w3c.dom.DOMException;
038:
039:        import org.w3c.dom.svg.SVGMatrix;
040:
041:        import com.sun.perseus.j2d.Transform;
042:
043:        /**
044:         * All nodes which represent geometry (complex or simple shapes)
045:         * are represented by descendants of this class.
046:         *
047:         * @version $Id: AbstractShapeNode.java,v 1.16 2006/06/29 10:47:29 ln156897 Exp $
048:         */
049:        public abstract class AbstractShapeNode extends AbstractRenderingNode {
050:            /**
051:             * Constructor.
052:             *
053:             * @param ownerDocument this element's owner <code>DocumentNode</code>
054:             */
055:            public AbstractShapeNode(final DocumentNode ownerDocument) {
056:                super (ownerDocument);
057:            }
058:
059:            /**
060:             * @return an adequate <code>ElementNodeProxy</code> for this node.
061:             */
062:            ElementNodeProxy buildProxy() {
063:                return new AbstractShapeNodeProxy(this );
064:            }
065:
066:            /**
067:             * @param rg the RenderGraphics on which to fill the shape.
068:             */
069:            public abstract void fillShape(final RenderGraphics rg);
070:
071:            /**
072:             * @param rg the RenderGraphics on which to draw the shape.
073:             */
074:            public abstract void drawShape(final RenderGraphics rg);
075:
076:            /**
077:             * @param x the hit point coordinate along the x-axis, in user space.
078:             * @param y the hit point coordinate along the y-axis, in user space.
079:             * @param fillRule the fillRule to apply when testing for containment.
080:             * @return true if the hit point is contained within the shape.
081:             */
082:            public abstract boolean contains(final float x, final float y,
083:                    final int fillRule);
084:
085:            /**
086:             * @param x the hit point coordinate along the x-axis, in user space.
087:             * @param y the hit point coordinate along the y-axis, in user space.
088:             * @param gp the <code>GraphicsProperties</code> instance defining the 
089:             *        rendering context.
090:             * @return true if the hit point is contained within the shape.
091:             */
092:            public final boolean strokedContains(final float x, final float y,
093:                    final GraphicsProperties gp) {
094:                Object strokedPath = getStrokedPath(this );
095:                return PathSupport.isStrokedPathHit(strokedPath, gp
096:                        .getFillRule(), x, y);
097:            }
098:
099:            /**
100:             * Returns the stroked shape, using the given stroke properties.
101:             *
102:             * @param gp the <code>GraphicsProperties</code> defining the rendering
103:             *        context.
104:             * @return the shape's stroked path.
105:             */
106:            abstract Object getStrokedPath(final GraphicsProperties gp);
107:
108:            /**
109:             * Computes the rendering tile for the given set of GraphicsProperties.
110:             *
111:             * @param tile the Tile instance whose bounds should be set.
112:             * @param t the Transform to the requested tile space, from this node's user
113:             * space.
114:             * @param gp the <code>GraphicsProperties</code> for which the tile
115:             *        should be computed.
116:             * @return the screen bounding box when this node is rendered with the 
117:             * given render context.
118:             */
119:            protected void computeRenderingTile(final Tile tile,
120:                    final Transform t, final GraphicsProperties gp) {
121:                if (gp.getStroke() == null) {
122:                    // No stroking on the shape, we can use the geometrical bounding 
123:                    // box.
124:                    tile.snapBox(addNodeBBox(null, t));
125:                } else {
126:                    // Need to account for stroking, with a more costly operation to 
127:                    // compute the stroked bounds.
128:                    Object strokedPath = getStrokedPath(gp);
129:                    PathSupport.computeStrokedPathTile(tile, strokedPath, t);
130:                }
131:            }
132:
133:            /**
134:             * Paints this node into the input RenderGraphics, assuming the node
135:             * is rendered.
136:             *
137:             * @param rg the <code>RenderGraphics</code> where the node should paint
138:             * itself.
139:             * @param gp the <code>GraphicsProperties</code> controlling the operation's
140:             * rendering
141:             * @param pt the <code>PaintTarget</code> for the paint operation.
142:             * @param txf the <code>Transform</code> from user space to device space for
143:             * the paint operation.
144:             */
145:            protected void paintRendered(final RenderGraphics rg,
146:                    final GraphicsProperties gp, final PaintTarget pt,
147:                    final Transform tx) {
148:                if (!gp.getVisibility()) {
149:                    return;
150:                }
151:
152:                rg.setPaintTarget(pt);
153:                rg.setPaintTransform(tx);
154:                rg.setTransform(tx);
155:
156:                // Fill the shape. Only apply the fill property
157:                if (gp.getFill() != null) {
158:                    rg.setFillRule(gp.getFillRule());
159:                    rg.setFill(gp.getFill());
160:                    rg.setFillOpacity(gp.getFillOpacity());
161:                    fillShape(rg);
162:                }
163:
164:                // Stroke the shape. Only apply the stroke properties
165:                if (gp.getStroke() != null) {
166:                    rg.setStroke(gp.getStroke());
167:                    rg.setStrokeOpacity(gp.getStrokeOpacity());
168:                    rg.setStrokeWidth(gp.getStrokeWidth());
169:                    rg.setStrokeLineCap(gp.getStrokeLineCap());
170:                    rg.setStrokeLineJoin(gp.getStrokeLineJoin());
171:                    rg.setStrokeDashArray(gp.getStrokeDashArray());
172:                    rg.setStrokeMiterLimit(gp.getStrokeMiterLimit());
173:                    rg.setStrokeDashOffset(gp.getStrokeDashOffset());
174:                    drawShape(rg);
175:                }
176:            }
177:
178:            /**
179:             * Returns true if this node is hit by the input point. The input point
180:             * is in viewport space. 
181:             *  
182:             * For an <tt>AbstractShapeNode</tt> this method returns true if:
183:             * <ul>
184:             * <li>the node is visible <b>and</b><ul>
185:             * <li>the node's fill is not NONE and the associated shape contains the
186:             *     input point, <b>or</b></li>
187:             * <li>the node's stroke is not NONE and the associated stroked shape
188:             *     contains the input point.</li></ul></li>
189:             * </ul>
190:             * This implements the equivalent of the visiblePainted value for the 
191:             * pointerEvents attribute. That attribute is not part of SVG Tiny,
192:             * but the default behavior in SVG Tiny is that of visiblePainted.
193:             *
194:             * @param pt the x/y coordinate. Should never be null and be
195:             *        of size two. If not, the behavior is unspecified.
196:             *        The x/y coordinate is in viewport space.
197:             *
198:             * @return true if the node is hit by the input point. 
199:             * @see #nodeHitAt
200:             */
201:            protected boolean isHitVP(float[] pt) {
202:                // Node has to be visible to be a hit target
203:                if (!getVisibility() || (fill == null && stroke == null)) {
204:                    return false;
205:                }
206:
207:                getInverseTransformState()
208:                        .transformPoint(pt, ownerDocument.upt);
209:                pt = ownerDocument.upt;
210:
211:                // If the node is filled, see if the shape is hit
212:                if (fill != null) {
213:                    if (contains(pt[0], pt[1], getFillRule())) {
214:                        return true;
215:                    }
216:                }
217:
218:                // Test detection on the edge if the stroke color
219:                // is set.
220:                if (stroke != null) {
221:                    if (strokedContains(pt[0], pt[1], this )) {
222:                        return true;
223:                    }
224:                }
225:
226:                return false;
227:            }
228:
229:            /**
230:             * Returns true if this proxy node is hit by the input point. The input 
231:             * point is in viewport space. 
232:             *
233:             * @param pt the x/y coordinate. Should never be null and be
234:             *        of size two. If not, the behavior is unspecified.
235:             *        The x/y coordinate is in viewport space.
236:             * @param proxy the tested ElementNodeProxy.
237:             * @return true if the node is hit by the input point. 
238:             * @see #isHitVP
239:             */
240:            protected boolean isProxyHitVP(float[] pt,
241:                    final AbstractRenderingNodeProxy proxy) {
242:                // Node has to be visible to be a hit target
243:                if (!proxy.getVisibility()
244:                        || (proxy.fill == null && proxy.stroke == null)) {
245:                    return false;
246:                }
247:
248:                proxy.getInverseTransformState().transformPoint(pt,
249:                        ownerDocument.upt);
250:                pt = ownerDocument.upt;
251:
252:                // If the node is filled, see if the shape is hit
253:                if (proxy.fill != null) {
254:                    if (contains(pt[0], pt[1], proxy.getFillRule())) {
255:                        return true;
256:                    }
257:                }
258:
259:                // Test detection on the edge if the stroke color
260:                // is set.
261:                if (((AbstractShapeNodeProxy) proxy).stroke != null) {
262:                    if (strokedContains(pt[0], pt[1], proxy)) {
263:                        return true;
264:                    }
265:                }
266:
267:                return false;
268:            }
269:
270:            /**
271:             * @param newFill the new computed fill property.
272:             */
273:            void setComputedFill(final PaintServer newFill) {
274:                this .fill = newFill;
275:                renderingDirty();
276:            }
277:
278:            /**
279:             * @param newStroke the new computed stroke property.
280:             */
281:            void setComputedStroke(final PaintServer newStroke) {
282:                this .stroke = newStroke;
283:                renderingDirty();
284:            }
285:
286:            /**
287:             * @param newStrokeWidth the new computed stroke-width property value.
288:             */
289:            void setComputedStrokeWidth(final float newStrokeWidth) {
290:                strokeWidth = newStrokeWidth;
291:
292:                // Only dirty rendering if the object is actually stroked.
293:                if (stroke != null) {
294:                    renderingDirty();
295:                }
296:            }
297:
298:            /**
299:             * @param newStrokeLineJoin the new computed value for stroke-line-join
300:             */
301:            void setComputedStrokeLineJoin(final int newStrokeLineJoin) {
302:                super .setComputedStrokeLineJoin(newStrokeLineJoin);
303:
304:                if (stroke != null) {
305:                    renderingDirty();
306:                }
307:            }
308:
309:            /**
310:             * @param newStrokeLineCap the new value for the stroke-linecap property.
311:             */
312:            void setComputedStrokeLineCap(final int newStrokeLineCap) {
313:                super .setComputedStrokeLineCap(newStrokeLineCap);
314:
315:                if (stroke != null) {
316:                    renderingDirty();
317:                }
318:            }
319:
320:            /**
321:             * @param newStrokeMiterLimit the new computed stroke-miterlimit property.
322:             */
323:            void setComputedStrokeMiterLimit(final float newStrokeMiterLimit) {
324:                strokeMiterLimit = newStrokeMiterLimit;
325:
326:                if (stroke != null && getStrokeLineJoin() == JOIN_MITER) {
327:                    renderingDirty();
328:                }
329:            }
330:
331:            /**
332:             * @param newStrokeDashArray the new computed stroke-dasharray property 
333:             *        value.
334:             */
335:            void setComputedStrokeDashArray(final float[] newStrokeDashArray) {
336:                strokeDashArray = newStrokeDashArray;
337:
338:                if (stroke != null) {
339:                    renderingDirty();
340:                }
341:            }
342:
343:            /**
344:             * @param newStrokeDashOffset the new stroke-dashoffset computed property 
345:             *        value.
346:             */
347:            void setComputedStrokeDashOffset(final float newStrokeDashOffset) {
348:                strokeDashOffset = newStrokeDashOffset;
349:
350:                if (stroke != null && strokeDashArray != null) {
351:                    renderingDirty();
352:                }
353:            }
354:
355:            /**
356:             * @param newFillOpacity the new computed value for the fill opacity 
357:             *        property.
358:             */
359:            void setComputedFillOpacity(final float newFillOpacity) {
360:                super .setComputedFillOpacity(newFillOpacity);
361:
362:                if (fill != null) {
363:                    renderingDirty();
364:                }
365:            }
366:
367:            /**
368:             * @param newStrokeOpacity the new computed stroke-opacity property.
369:             */
370:            void setComputedStrokeOpacity(final float newStrokeOpacity) {
371:                super.setComputedStrokeOpacity(newStrokeOpacity);
372:
373:                if (stroke != null) {
374:                    renderingDirty();
375:                }
376:            }
377:
378:        }
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