Source Code Cross Referenced for Symbol.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:         */package com.sun.perseus.model;
026:
027:        import com.sun.perseus.platform.URLResolver;
028:
029:        import com.sun.perseus.util.SVGConstants;
030:
031:        import org.w3c.dom.DOMException;
032:
033:        import org.w3c.dom.svg.SVGMatrix;
034:        import org.w3c.dom.svg.SVGRect;
035:
036:        import com.sun.perseus.j2d.Transform;
037:
038:        /**
039:         * Represents an SVG Tiny <code>&lt;a&gt;</code> element.
040:         * An symbol is a simple <code>Group</code> extension which
041:         * simply has a href and a target attribute.
042:         * 
043:         * @version $Id: Symbol.java,v 1.6 2006/06/29 10:47:35 ln156897 Exp $
044:         */
045:        public class Symbol extends Group {
046:            /**
047:             * This SVG node's viewBox. If null, then there is
048:             * no viewBox.
049:             */
050:            protected float[][] viewBox;
051:
052:            /**
053:             * Constructor.
054:             *
055:             * @param ownerDocument this element's owner <code>DocumentNode</code>
056:             */
057:            public Symbol(final DocumentNode ownerDocument) {
058:                super (ownerDocument);
059:            }
060:
061:            /**
062:             * @return the SVGConstants.SVG_A_TAG value
063:             */
064:            public String getLocalName() {
065:                return SVGConstants.SVG_SYMBOL_TAG;
066:            }
067:
068:            /**
069:             * Used by <code>DocumentNode</code> to create a new instance from
070:             * a prototype <code>SymbolNode</code>.
071:             *
072:             * @param doc the <code>DocumentNode</code> for which a new node is
073:             *        should be created.
074:             * @return a new <code>Symbol</code> for the requested document.
075:             */
076:            public ElementNode newInstance(final DocumentNode doc) {
077:                return new Symbol(doc);
078:            }
079:
080:            /**
081:             * Apply this node's viewBox x/y translation if it is not (0,0).
082:             *
083:             * @param tx the <code>Transform</code> to apply additional node 
084:             *        transforms to. This may be null.
085:             * @param workTx a <code>Transform</code> which can be re-used if a 
086:             *        new <code>Transform</code> needs to be created and workTx
087:             *        is not the same instance as tx.
088:             * @return a transform with this node's transform added.
089:             */
090:            protected Transform appendTransform(Transform tx,
091:                    final Transform workTx) {
092:                if (viewBox == null
093:                        || (viewBox[0][0] == 0 && viewBox[0][1] == 0)) {
094:                    return tx;
095:                }
096:
097:                tx = recycleTransform(tx, workTx);
098:
099:                if (viewBox != null) {
100:                    tx.mTranslate(-viewBox[0][0], -viewBox[0][1]);
101:                }
102:
103:                return tx;
104:            }
105:
106:            // JAVADOC COMMENT ELIDED
107:            public SVGRect getBBox() {
108:                if (viewBox != null) {
109:                    Transform t = new Transform(1, 0, 0, 1, -viewBox[0][0],
110:                            -viewBox[0][1]);
111:                    return addBBox(null, t);
112:                }
113:
114:                return addBBox(null, null);
115:            }
116:
117:            // JAVADOC COMMENT ELIDED
118:            public SVGMatrix getScreenCTM() {
119:                SVGMatrix m = super .getScreenCTM();
120:                if (m != null) {
121:                    if (viewBox != null) {
122:                        m = m.mTranslate(viewBox[0][0], viewBox[0][1]);
123:                    }
124:                }
125:
126:                return m;
127:            }
128:
129:            /**
130:             * Sets a new value for the viewBox. If there viewBox is
131:             * not null, it should be of size 4
132:             * @param newViewBox the new viewBox for this <tt>SVG</tt>
133:             * 
134:             * @throws IllegalArgumentException if the input viewBox is 
135:             *         not null and of size other than 4.
136:             */
137:            public void setViewBox(final float[][] newViewBox) {
138:
139:                if (newViewBox != null) {
140:                    if (newViewBox.length != 3 || newViewBox[0] == null
141:                            || newViewBox[1] == null || newViewBox[2] == null
142:                            || newViewBox[0].length != 2
143:                            || newViewBox[1][0] < 0 || newViewBox[2][0] < 0) {
144:                        throw new IllegalArgumentException();
145:                    }
146:                }
147:
148:                modifyingNode();
149:
150:                if (viewBox == null) {
151:                    viewBox = new float[3][];
152:                    viewBox[0] = new float[2];
153:                    viewBox[1] = new float[1];
154:                    viewBox[2] = new float[1];
155:                }
156:
157:                viewBox[0][0] = newViewBox[0][0];
158:                viewBox[0][1] = newViewBox[0][1];
159:                viewBox[1][0] = newViewBox[1][0];
160:                viewBox[2][0] = newViewBox[2][0];
161:
162:                recomputeTransformState();
163:                recomputeProxyTransformState();
164:                computeCanRenderEmptyViewBoxBit(viewBox);
165:                modifiedNode();
166:            }
167:
168:            /**
169:             * @return this Symbol's viewBox
170:             */
171:            public float[][] getViewBox() {
172:                return viewBox;
173:            }
174:
175:            /**
176:             * Symbol handles the target trait.
177:             *
178:             * @param traitName the name of the trait which the element may support.
179:             * @return true if this element supports the given trait in one of the
180:             *         trait accessor methods.
181:             */
182:            boolean supportsTrait(final String traitName) {
183:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == traitName) {
184:                    return true;
185:                } else {
186:                    return super .supportsTrait(traitName);
187:                }
188:            }
189:
190:            /**
191:             * Symbol handles the viewBox trait.
192:             *
193:             * @param name the requested trait name
194:             * @return the requested trait's value.
195:             * 
196:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
197:             * trait is not supported on this element or null.
198:             * @throws DOMException with error code TYPE_MISMATCH_ERR if requested
199:             * trait's computed value cannot be converted to a String (SVG Tiny only).
200:             */
201:            public String getTraitImpl(final String name) throws DOMException {
202:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == name) {
203:                    if (viewBox == null) {
204:                        return "";
205:                    } else {
206:                        return "" + viewBox[0][0] + SVGConstants.COMMA
207:                                + viewBox[0][1] + SVGConstants.COMMA
208:                                + viewBox[1][0] + SVGConstants.COMMA
209:                                + viewBox[2][0];
210:                    }
211:                } else {
212:                    return super .getTraitImpl(name);
213:                }
214:            }
215:
216:            /**
217:             * @param name the name of the trait to convert.
218:             * @param value the float trait value to convert.
219:             */
220:            String toStringTrait(final String name, final float[][] value) {
221:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == name) {
222:                    float[] vb = { value[0][0], value[0][1], value[1][0],
223:                            value[2][0] };
224:                    return toStringTrait(vb);
225:                } else {
226:                    return super .toStringTrait(name, value);
227:                }
228:            }
229:
230:            /**
231:             * Symbol handles the viewBox Rect trait.
232:             *
233:             * @param name the requested trait name (e.g., "viewBox")
234:             * @return the requested trait SVGRect value.
235:             *
236:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
237:             * trait is not supported on this element or null.
238:             * @throws DOMException with error code TYPE_MISMATCH_ERR if requested
239:             * trait's computed value cannot be converted to {@link
240:             * org.w3c.dom.svg.SVGRect SVGRect}
241:             * @throws SecurityException if the application does not have the necessary
242:             * privilege rights to access this (SVG) content.
243:             */
244:            SVGRect getRectTraitImpl(final String name) throws DOMException {
245:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE.equals(name)) {
246:                    return toSVGRect(viewBox);
247:                } else {
248:                    return super .getRectTraitImpl(name);
249:                }
250:            }
251:
252:            /**
253:             * @param traitName the trait name.
254:             */
255:            TraitAnim createTraitAnimImpl(final String traitName) {
256:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == traitName) {
257:                    return new FloatTraitAnim(this , traitName,
258:                            TRAIT_TYPE_SVG_RECT);
259:                } else {
260:                    return super .createTraitAnimImpl(traitName);
261:                }
262:            }
263:
264:            /**
265:             * Symbol handles the viewBox trait.
266:             *
267:             * @param name the name of the trait to set.
268:             * @param value the value of the trait to set.
269:             *
270:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
271:             * trait is not supported on this element or null.
272:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
273:             * trait's value cannot be specified as a String
274:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
275:             * value is an invalid value for the given trait or null.
276:             * @throws DOMException with error code NO_MODIFICATION_ALLOWED_ERR: if
277:             * attempt is made to change readonly trait.
278:             */
279:            public void setTraitImpl(final String name, final String value)
280:                    throws DOMException {
281:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == name) {
282:                    setViewBox(toViewBox(name, value));
283:                } else {
284:                    super .setTraitImpl(name, value);
285:                }
286:            }
287:
288:            /**
289:             * Symbol handles the viewBox Rect trait.
290:             *
291:             * @param name the trait name (e.g., "viewBox"
292:             * @param rect the trait value
293:             *
294:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
295:             * trait is not supported on this element or null.
296:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
297:             * trait's value cannot be specified as an {@link org.w3c.dom.svg.SVGRect
298:             * SVGRect}
299:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
300:             * value is an invalid value for the given trait or null.  SVGRect is
301:             * invalid if the width or height values are set to negative.
302:             * @throws SecurityException if the application does not have the necessary
303:             * privilege rights to access this (SVG) content.
304:             */
305:            public void setRectTraitImpl(final String name, final SVGRect rect)
306:                    throws DOMException {
307:                // Note that here, we use equals because the string 
308:                // has not been interned.
309:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE.equals(name)) {
310:                    if (rect == null) {
311:                        throw illegalTraitValue(name, null);
312:                    }
313:
314:                    if (rect.getWidth() < 0 || rect.getHeight() < 0) {
315:                        throw illegalTraitValue(name,
316:                                toStringTrait(new float[] { rect.getX(),
317:                                        rect.getY(), rect.getWidth(),
318:                                        rect.getHeight() }));
319:                    }
320:
321:                    setViewBox(new float[][] {
322:                            new float[] { rect.getX(), rect.getY() },
323:                            new float[] { rect.getWidth() },
324:                            new float[] { rect.getHeight() } });
325:
326:                } else {
327:                    super .setRectTraitImpl(name, rect);
328:                }
329:            }
330:
331:            /**
332:             * Set the trait value as float.
333:             *
334:             * @param name the trait's name.
335:             * @param value the trait's value.
336:             *
337:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
338:             * trait is not supported on this element.
339:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
340:             * trait's value cannot be specified as a float
341:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
342:             * value is an invalid value for the given trait.
343:             */
344:            void setFloatArrayTrait(final String name, final float[][] value)
345:                    throws DOMException {
346:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == name) {
347:                    setViewBox(value);
348:                } else {
349:                    super .setFloatArrayTrait(name, value);
350:                }
351:            }
352:
353:            /**
354:             * Validates the input trait value.
355:             *
356:             * @param traitName the name of the trait to be validated.
357:             * @param value the value to be validated
358:             * @param reqNamespaceURI the namespace of the element requesting 
359:             *        validation.
360:             * @param reqLocalName the local name of the element requesting validation.
361:             * @param reqTraitNamespace the namespace of the trait which has the values
362:             *        value on the requesting element.
363:             * @param reqTraitName the name of the trait which has the values value on 
364:             *        the requesting element.
365:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
366:             *         value is incompatible with the given trait.
367:             */
368:            public float[][] validateFloatArrayTrait(final String traitName,
369:                    final String value, final String reqNamespaceURI,
370:                    final String reqLocalName, final String reqTraitNamespace,
371:                    final String reqTraitName) throws DOMException {
372:                if (SVGConstants.SVG_VIEW_BOX_ATTRIBUTE == traitName) {
373:                    return ownerDocument.viewBoxParser.parseViewBox(value);
374:                } else {
375:                    return super.validateFloatArrayTrait(traitName, value,
376:                            reqNamespaceURI, reqLocalName, reqTraitNamespace,
377:                            reqTraitName);
378:                }
379:            }
380:
381:        }
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