Source Code Cross Referenced for Stop.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.util.SVGConstants;
029:
030:        import org.w3c.dom.DOMException;
031:
032:        import org.w3c.dom.svg.SVGRGBColor;
033:
034:        import com.sun.perseus.j2d.RGB;
035:
036:        /**
037:         * <code>Stop</code> class represents the <code>&lt;stop&gt;</code>
038:         * SVG Tiny 1.2 element.
039:         *
040:         * @version $Id: Stop.java,v 1.5 2006/06/29 10:47:34 ln156897 Exp $
041:         */
042:        public class Stop extends CompositeGraphicsNode {
043:            /**
044:             * offset is required on &lt;stop&gt;
045:             */
046:            static final String[] REQUIRED_TRAITS = { SVGConstants.SVG_OFFSET_ATTRIBUTE };
047:
048:            /**
049:             * The default stop color.
050:             */
051:            static final RGB DEFAULT_STOP_COLOR = RGB.black;
052:
053:            /**
054:             * The default stop opacity.
055:             */
056:            static final float DEFAULT_STOP_OPACITY = 1;
057:            /**
058:             * The stop's color
059:             */
060:            RGB stopColor = DEFAULT_STOP_COLOR;
061:
062:            /**
063:             * The stop's opacity
064:             */
065:            float stopOpacity = DEFAULT_STOP_OPACITY;
066:
067:            /**
068:             * The stop offset value.
069:             */
070:            float offset;
071:
072:            /**
073:             * Constructor.
074:             *
075:             * @param ownerDocument this element's owner <code>DocumentNode</code>
076:             */
077:            public Stop(final DocumentNode ownerDocument) {
078:                super (ownerDocument);
079:            }
080:
081:            /**
082:             * @return an adequate <code>ElementNodeProxy</code> for this node.
083:             */
084:            ElementNodeProxy buildProxy() {
085:                return new CompositeGraphicsNodeProxy(this );
086:            }
087:
088:            /**
089:             * @return the SVGConstants.SVG_STOP_TAG value
090:             */
091:            public String getLocalName() {
092:                return SVGConstants.SVG_STOP_TAG;
093:            }
094:
095:            /**
096:             * Used by <code>DocumentNode</code> to create a new instance from
097:             * a prototype <code>Stop</code>.
098:             *
099:             * @param doc the <code>DocumentNode</code> for which a new node is
100:             *        should be created.
101:             * @return a new <code>SolidColor</code> for the requested document.
102:             */
103:            public ElementNode newInstance(final DocumentNode doc) {
104:                return new Stop(doc);
105:            }
106:
107:            /**
108:             * Sets the stop-color property.
109:             *
110:             * @param newStopColor the new stop-color property
111:             */
112:            public void setStopColor(final RGB newStopColor) {
113:                if (stopColor.equals(newStopColor)) {
114:                    return;
115:                }
116:
117:                stopColor = newStopColor;
118:                updateGradient();
119:            }
120:
121:            /**
122:             * @return the current stopColor property. 
123:             */
124:            public RGB getStopColor() {
125:                return stopColor;
126:            }
127:
128:            /**
129:             * Sets the stop-opacity property.
130:             *
131:             * @param newStopOpacity the new stop-opacity property
132:             */
133:            public void setStopOpacity(final float newStopOpacity) {
134:                if (newStopOpacity == stopOpacity) {
135:                    return;
136:                }
137:
138:                stopOpacity = newStopOpacity;
139:                updateGradient();
140:            }
141:
142:            /**
143:             * @return the current stopOpacity property. 
144:             */
145:            public float getStopOpacity() {
146:                return stopOpacity;
147:            }
148:
149:            /**
150:             * Sets the stop offset
151:             *
152:             * @param newOffset the new offset
153:             */
154:            public void setOffset(final float newOffset) {
155:                if (newOffset == offset) {
156:                    return;
157:                }
158:
159:                offset = newOffset;
160:                updateGradient();
161:            }
162:
163:            /**
164:             * @return the stop's offset
165:             */
166:            public float getOffset() {
167:                return offset;
168:            }
169:
170:            /**
171:             * Should be called by the stop every time its parent gradient
172:             * should recompute its state.
173:             */
174:            void updateGradient() {
175:                if (parent != null) {
176:                    if (parent instanceof  GradientElement) {
177:                        ((GradientElement) parent).onPaintChange();
178:                    }
179:                }
180:            }
181:
182:            /**
183:             * @return the number of properties supported by this node
184:             */
185:            public int getNumberOfProperties() {
186:                return GraphicsNode.NUMBER_OF_PROPERTIES;
187:            }
188:
189:            /**
190:             * @param traitName the name of the trait which the element may support.
191:             * @return true if this element supports the given trait in one of the
192:             *         trait accessor methods.
193:             */
194:            boolean supportsTrait(final String traitName) {
195:                if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == traitName
196:                        || SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == traitName
197:                        || SVGConstants.SVG_OFFSET_ATTRIBUTE == traitName) {
198:                    return true;
199:                } else {
200:                    return super .supportsTrait(traitName);
201:                }
202:            }
203:
204:            /**
205:             * @return an array of traits that are required by this element.
206:             */
207:            public String[] getRequiredTraits() {
208:                return REQUIRED_TRAITS;
209:            }
210:
211:            /**
212:             * @param traitName the trait name.
213:             */
214:            TraitAnim createTraitAnimImpl(final String traitName) {
215:                if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == traitName
216:                        || SVGConstants.SVG_OFFSET_ATTRIBUTE == traitName) {
217:                    return new FloatTraitAnim(this , traitName, TRAIT_TYPE_FLOAT);
218:                } else if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == traitName) {
219:                    return new FloatTraitAnim(this , traitName,
220:                            TRAIT_TYPE_SVG_RGB_COLOR);
221:                } else {
222:                    return super .createTraitAnimImpl(traitName);
223:                }
224:            }
225:
226:            /**
227:             * @param name the requested trait name (e.g., "ry")
228:             * @return the trait's value, as a string.
229:             *
230:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
231:             * trait is not supported on this element or null.
232:             * @throws DOMException with error code TYPE_MISMATCH_ERR if requested
233:             * trait's computed value cannot be converted to a String (SVG Tiny only).
234:             */
235:            public String getTraitImpl(final String name) throws DOMException {
236:                if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == name) {
237:                    return stopColor.toString();
238:                } else if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name) {
239:                    return Float.toString(stopOpacity);
240:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
241:                    return Float.toString(offset);
242:                } else {
243:                    return super .getTraitImpl(name);
244:                }
245:            }
246:
247:            /**
248:             * @param name the requested trait name (e.g., "y")
249:             * @return the requested trait value
250:             *
251:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
252:             * trait is not supported on this element or null.
253:             * @throws DOMException with error code TYPE_MISMATCH_ERR if requested
254:             * trait's computed value cannot be converted to a float
255:             * @throws SecurityException if the application does not have the necessary
256:             * privilege rights to access this (SVG) content.
257:             */
258:            float getFloatTraitImpl(final String name) throws DOMException {
259:                if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name) {
260:                    return stopOpacity;
261:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
262:                    return offset;
263:                } else {
264:                    return super .getFloatTraitImpl(name);
265:                }
266:            }
267:
268:            /**
269:             * @param name the requested trait's name.
270:             * @return the requested trait's value, as an <code>SVGRGBColor</code>.
271:             *
272:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
273:             * trait is not supported on this element or null.
274:             * @throws DOMException with error code TYPE_MISMATCH_ERR if requested
275:             * trait's computed value cannot be converted to {@link
276:             * org.w3c.dom.svg.SVGRGBColor SVGRGBColor}
277:             * @throws SecurityException if the application does not have the necessary
278:             * privilege rights to access this (SVG) content.
279:             */
280:            SVGRGBColor getRGBColorTraitImpl(final String name)
281:                    throws DOMException {
282:                // We use .equals here because name is not interned.
283:                if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE.equals(name)) {
284:                    return stopColor;
285:                } else {
286:                    return super .getRGBColorTraitImpl(name);
287:                }
288:            }
289:
290:            /**
291:             * Set the trait value as float array.
292:             *
293:             * @param name the trait's name.
294:             * @param value the trait's value.
295:             *
296:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
297:             * trait is not supported on this element.
298:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
299:             * trait's value cannot be specified as a float
300:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
301:             * value is an invalid value for the given trait.
302:             */
303:            void setFloatArrayTrait(final String name, final float[][] value)
304:                    throws DOMException {
305:                if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == name) {
306:                    setStopColor(toRGB(name, value));
307:                } else if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name) {
308:                    if (value[0][0] < 0 || value[0][0] > 1) {
309:                        throw illegalTraitValue(name, Float
310:                                .toString(value[0][0]));
311:                    }
312:                    setStopOpacity(value[0][0]);
313:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
314:                    setOffset(value[0][0]);
315:                } else {
316:                    super .setFloatArrayTrait(name, value);
317:                }
318:            }
319:
320:            /**
321:             * Validates the input trait value.
322:             *
323:             * @param traitName the name of the trait to be validated.
324:             * @param value the value to be validated
325:             * @param reqNamespaceURI the namespace of the element requesting 
326:             *        validation.
327:             * @param reqLocalName the local name of the element requesting validation.
328:             * @param reqTraitNamespace the namespace of the trait which has the values
329:             *        value on the requesting element.
330:             * @param reqTraitName the name of the trait which has the values value on 
331:             *        the requesting element.
332:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
333:             *         value is incompatible with the given trait.
334:             */
335:            public float[][] validateFloatArrayTrait(final String traitName,
336:                    final String value, final String reqNamespaceURI,
337:                    final String reqLocalName, final String reqTraitNamespace,
338:                    final String reqTraitName) throws DOMException {
339:                if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == traitName) {
340:                    RGB color = parseColorTrait(
341:                            SVGConstants.SVG_COLOR_ATTRIBUTE, value);
342:                    if (color == null) {
343:                        throw illegalTraitValue(traitName, value);
344:                    }
345:                    return new float[][] { { color.getRed(), color.getGreen(),
346:                            color.getBlue() } };
347:                } else if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == traitName) {
348:                    return new float[][] { { parseFloatTrait(traitName, value) } };
349:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == traitName) {
350:                    return new float[][] { { parseFloatTrait(traitName, value) } };
351:                } else {
352:                    return super .validateFloatArrayTrait(traitName, value,
353:                            reqNamespaceURI, reqLocalName, reqTraitNamespace,
354:                            reqTraitName);
355:                }
356:
357:            }
358:
359:            /**
360:             * CompositeGraphicsNode handles the graphics node traits.
361:             * Other attributes are handled by the super class.
362:             *
363:             * Supported traits: stroke-width, stroke-miterlimit, stroke-dashoffset,
364:             * fill-rule, stroke-linejoin, stroke-linecap, display, visibility, 
365:             * color, fill, stroke, fill-opacity, stroke-opacity, stroke-dasharray
366:             *
367:             * @param name the name of the trait to set.
368:             * @param value the value of the trait to set.
369:             *
370:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
371:             * trait is not supported on this element or null.
372:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
373:             * trait's value cannot be specified as a String
374:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
375:             * value is an invalid value for the given trait or null.
376:             * @throws DOMException with error code NO_MODIFICATION_ALLOWED_ERR: if
377:             * attempt is made to change readonly trait.
378:             */
379:            public void setTraitImpl(final String name, final String value)
380:                    throws DOMException {
381:                if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name) {
382:
383:                    // ======================= stop-opacity ===================== //
384:
385:                    if (SVGConstants.CSS_INHERIT_VALUE.equals(value)) {
386:                        setStopOpacity(DEFAULT_STOP_OPACITY);
387:                    } else {
388:                        setStopOpacity(parsePositiveFloatTrait(name, value));
389:                    }
390:                } else if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE.equals(name)) {
391:
392:                    // ======================== stop-color ===================== //
393:
394:                    if (SVGConstants.CSS_INHERIT_VALUE.equals(value)) {
395:                        setStopColor(DEFAULT_STOP_COLOR);
396:                    } else if (SVGConstants.CSS_CURRENTCOLOR_VALUE
397:                            .equals(value)) {
398:                        setStopColor(getColor());
399:                    } else {
400:                        setStopColor(parseColorTrait(
401:                                SVGConstants.SVG_STOP_COLOR_ATTRIBUTE, value));
402:                    }
403:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
404:                    setOffset(parseFloatTrait(name, value));
405:                } else {
406:                    super .setTraitImpl(name, value);
407:                }
408:            }
409:
410:            /**
411:             * Set the trait value as float.  
412:             *
413:             * Supported float traits: stroke-width, stroke-miterlimit,
414:             * stroke-dashoffset, fill-opacity, stroke-opacity.
415:             *
416:             * @param name the name of the trait to set.
417:             * @param value the value of the trait to set.
418:             *
419:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
420:             * trait is not supported on this element.
421:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
422:             * trait's value cannot be specified as a float
423:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
424:             * value is an invalid value for the given trait.
425:             * @throws SecurityException if the application does not have the necessary
426:             * privilege rights to access this (SVG) content.
427:             */
428:            public void setFloatTraitImpl(final String name, final float value)
429:                    throws DOMException {
430:                if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name) {
431:                    setStopOpacity(value);
432:                } else if (SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
433:                    setOffset(value);
434:                } else {
435:                    super .setFloatTraitImpl(name, value);
436:                }
437:            }
438:
439:            /**
440:             * @param name the name of the trait to convert.
441:             * @param value the float trait value to convert.
442:             */
443:            String toStringTrait(final String name, final float[][] value) {
444:                if (SVGConstants.SVG_STOP_OPACITY_ATTRIBUTE == name
445:                        || SVGConstants.SVG_OFFSET_ATTRIBUTE == name) {
446:                    return Float.toString(value[0][0]);
447:                } else if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE == name) {
448:                    return toRGBString(name, value);
449:                } else {
450:                    return super .toStringTrait(name, value);
451:                }
452:            }
453:
454:            /**
455:             * Set the trait value as {@link org.w3c.dom.svg.SVGRGBColor SVGRGBColor}.
456:             *
457:             * Supported color traits: color, fill, stroke
458:             *
459:             * @param name the name of the trait to set.
460:             * @param value the value of the trait to set.
461:             *
462:             * @throws DOMException with error code NOT_SUPPORTED_ERROR if the requested
463:             * trait is not supported on this element or null.
464:             * @throws DOMException with error code TYPE_MISMATCH_ERR if the requested
465:             * trait's value cannot be specified as an {@link
466:             * org.w3c.dom.svg.SVGRGBColor SVGRGBColor}
467:             * @throws DOMException with error code INVALID_ACCESS_ERR if the input
468:             * value is null.
469:             * @throws SecurityException if the application does not have the necessary
470:             * privilege rights to access this (SVG) content.
471:             */
472:            void setRGBColorTraitImpl(final String name, final SVGRGBColor color)
473:                    throws DOMException {
474:                try {
475:                    if (SVGConstants.SVG_STOP_COLOR_ATTRIBUTE.equals(name)) {
476:                        setStopColor((RGB) color);
477:                    } else {
478:                        super .setRGBColorTraitImpl(name, color);
479:                    }
480:                } catch (IllegalArgumentException iae) {
481:                    throw new DOMException(DOMException.INVALID_ACCESS_ERR, iae
482:                            .getMessage());
483:                }
484:            }
485:
486:        }
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