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Java Source Code / Java Documentation » PDF » pdf itext » com.lowagie.text.html 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * $Id: Markup.java 2536 2007-01-19 14:17:01Z blowagie $
003:         * $Name$
004:         *
005:         * Copyright 2001, 2002 by Bruno Lowagie.
006:         *
007:         * The contents of this file are subject to the Mozilla Public License Version 1.1
008:         * (the "License"); you may not use this file except in compliance with the License.
009:         * You may obtain a copy of the License at http://www.mozilla.org/MPL/
010:         *
011:         * Software distributed under the License is distributed on an "AS IS" basis,
012:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013:         * for the specific language governing rights and limitations under the License.
014:         *
015:         * The Original Code is 'iText, a free JAVA-PDF library'.
016:         *
017:         * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
018:         * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
019:         * All Rights Reserved.
020:         * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
021:         * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
022:         *
023:         * Contributor(s): all the names of the contributors are added in the source code
024:         * where applicable.
025:         *
026:         * Alternatively, the contents of this file may be used under the terms of the
027:         * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
028:         * provisions of LGPL are applicable instead of those above.  If you wish to
029:         * allow use of your version of this file only under the terms of the LGPL
030:         * License and not to allow others to use your version of this file under
031:         * the MPL, indicate your decision by deleting the provisions above and
032:         * replace them with the notice and other provisions required by the LGPL.
033:         * If you do not delete the provisions above, a recipient may use your version
034:         * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
035:         *
036:         * This library is free software; you can redistribute it and/or modify it
037:         * under the terms of the MPL as stated above or under the terms of the GNU
038:         * Library General Public License as published by the Free Software Foundation;
039:         * either version 2 of the License, or any later version.
040:         *
041:         * This library is distributed in the hope that it will be useful, but WITHOUT
042:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
043:         * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
044:         * details.
045:         *
046:         * If you didn't download this code from the following link, you should check if
047:         * you aren't using an obsolete version:
048:         * http://www.lowagie.com/iText/
049:         */
050:
051:        package com.lowagie.text.html;
052:
053:        import java.awt.Color;
054:        import java.util.Properties;
055:        import java.util.StringTokenizer;
056:
057:        /**
058:         * A class that contains all the possible tagnames and their attributes.
059:         */
060:
061:        public class Markup {
062:
063:            // iText specific
064:
065:            /** the key for any tag */
066:            public static final String ITEXT_TAG = "tag";
067:
068:            // HTML tags
069:
070:            /** the markup for the body part of a file */
071:            public static final String HTML_TAG_BODY = "body";
072:
073:            /** The DIV tag. */
074:            public static final String HTML_TAG_DIV = "div";
075:
076:            /** This is a possible HTML-tag. */
077:            public static final String HTML_TAG_LINK = "link";
078:
079:            /** The SPAN tag. */
080:            public static final String HTML_TAG_SPAN = "span";
081:
082:            // HTML attributes
083:
084:            /** the height attribute. */
085:            public static final String HTML_ATTR_HEIGHT = "height";
086:
087:            /** the hyperlink reference attribute. */
088:            public static final String HTML_ATTR_HREF = "href";
089:
090:            /** This is a possible HTML attribute for the LINK tag. */
091:            public static final String HTML_ATTR_REL = "rel";
092:
093:            /** This is used for inline css style information */
094:            public static final String HTML_ATTR_STYLE = "style";
095:
096:            /** This is a possible HTML attribute for the LINK tag. */
097:            public static final String HTML_ATTR_TYPE = "type";
098:
099:            /** This is a possible HTML attribute. */
100:            public static final String HTML_ATTR_STYLESHEET = "stylesheet";
101:
102:            /** the width attribute. */
103:            public static final String HTML_ATTR_WIDTH = "width";
104:
105:            /** attribute for specifying externally defined CSS class */
106:            public static final String HTML_ATTR_CSS_CLASS = "class";
107:
108:            /** The ID attribute. */
109:            public static final String HTML_ATTR_CSS_ID = "id";
110:
111:            // HTML values
112:
113:            /** This is a possible value for the language attribute (SCRIPT tag). */
114:            public static final String HTML_VALUE_JAVASCRIPT = "text/javascript";
115:
116:            /** This is a possible HTML attribute for the LINK tag. */
117:            public static final String HTML_VALUE_CSS = "text/css";
118:
119:            // CSS keys
120:
121:            /** the CSS tag for background color */
122:            public static final String CSS_KEY_BGCOLOR = "background-color";
123:
124:            /** the CSS tag for text color */
125:            public static final String CSS_KEY_COLOR = "color";
126:
127:            /** CSS key that indicate the way something has to be displayed */
128:            public static final String CSS_KEY_DISPLAY = "display";
129:
130:            /** the CSS tag for the font family */
131:            public static final String CSS_KEY_FONTFAMILY = "font-family";
132:
133:            /** the CSS tag for the font size */
134:            public static final String CSS_KEY_FONTSIZE = "font-size";
135:
136:            /** the CSS tag for the font style */
137:            public static final String CSS_KEY_FONTSTYLE = "font-style";
138:
139:            /** the CSS tag for the font weight */
140:            public static final String CSS_KEY_FONTWEIGHT = "font-weight";
141:
142:            /** the CSS tag for text decorations */
143:            public static final String CSS_KEY_LINEHEIGHT = "line-height";
144:
145:            /** the CSS tag for the margin of an object */
146:            public static final String CSS_KEY_MARGIN = "margin";
147:
148:            /** the CSS tag for the margin of an object */
149:            public static final String CSS_KEY_MARGINLEFT = "margin-left";
150:
151:            /** the CSS tag for the margin of an object */
152:            public static final String CSS_KEY_MARGINRIGHT = "margin-right";
153:
154:            /** the CSS tag for the margin of an object */
155:            public static final String CSS_KEY_MARGINTOP = "margin-top";
156:
157:            /** the CSS tag for the margin of an object */
158:            public static final String CSS_KEY_MARGINBOTTOM = "margin-bottom";
159:
160:            /** the CSS tag for the margin of an object */
161:            public static final String CSS_KEY_PADDING = "padding";
162:
163:            /** the CSS tag for the margin of an object */
164:            public static final String CSS_KEY_PADDINGLEFT = "padding-left";
165:
166:            /** the CSS tag for the margin of an object */
167:            public static final String CSS_KEY_PADDINGRIGHT = "padding-right";
168:
169:            /** the CSS tag for the margin of an object */
170:            public static final String CSS_KEY_PADDINGTOP = "padding-top";
171:
172:            /** the CSS tag for the margin of an object */
173:            public static final String CSS_KEY_PADDINGBOTTOM = "padding-bottom";
174:
175:            /** the CSS tag for the margin of an object */
176:            public static final String CSS_KEY_BORDERCOLOR = "border-color";
177:
178:            /** the CSS tag for the margin of an object */
179:            public static final String CSS_KEY_BORDERWIDTH = "border-width";
180:
181:            /** the CSS tag for the margin of an object */
182:            public static final String CSS_KEY_BORDERWIDTHLEFT = "border-left-width";
183:
184:            /** the CSS tag for the margin of an object */
185:            public static final String CSS_KEY_BORDERWIDTHRIGHT = "border-right-width";
186:
187:            /** the CSS tag for the margin of an object */
188:            public static final String CSS_KEY_BORDERWIDTHTOP = "border-top-width";
189:
190:            /** the CSS tag for the margin of an object */
191:            public static final String CSS_KEY_BORDERWIDTHBOTTOM = "border-bottom-width";
192:
193:            /** the CSS tag for adding a page break when the document is printed */
194:            public static final String CSS_KEY_PAGE_BREAK_AFTER = "page-break-after";
195:
196:            /** the CSS tag for adding a page break when the document is printed */
197:            public static final String CSS_KEY_PAGE_BREAK_BEFORE = "page-break-before";
198:
199:            /** the CSS tag for the horizontal alignment of an object */
200:            public static final String CSS_KEY_TEXTALIGN = "text-align";
201:
202:            /** the CSS tag for text decorations */
203:            public static final String CSS_KEY_TEXTDECORATION = "text-decoration";
204:
205:            /** the CSS tag for text decorations */
206:            public static final String CSS_KEY_VERTICALALIGN = "vertical-align";
207:
208:            /** the CSS tag for the visibility of objects */
209:            public static final String CSS_KEY_VISIBILITY = "visibility";
210:
211:            // CSS values
212:
213:            /** value for the CSS tag for adding a page break when the document is printed */
214:            public static final String CSS_VALUE_ALWAYS = "always";
215:
216:            /** A possible value for the DISPLAY key */
217:            public static final String CSS_VALUE_BLOCK = "block";
218:
219:            /** a CSS value for text font weight */
220:            public static final String CSS_VALUE_BOLD = "bold";
221:
222:            /** the value if you want to hide objects. */
223:            public static final String CSS_VALUE_HIDDEN = "hidden";
224:
225:            /** A possible value for the DISPLAY key */
226:            public static final String CSS_VALUE_INLINE = "inline";
227:
228:            /** a CSS value for text font style */
229:            public static final String CSS_VALUE_ITALIC = "italic";
230:
231:            /** a CSS value for text decoration */
232:            public static final String CSS_VALUE_LINETHROUGH = "line-through";
233:
234:            /** A possible value for the DISPLAY key */
235:            public static final String CSS_VALUE_LISTITEM = "list-item";
236:
237:            /** a CSS value */
238:            public static final String CSS_VALUE_NONE = "none";
239:
240:            /** a CSS value */
241:            public static final String CSS_VALUE_NORMAL = "normal";
242:
243:            /** a CSS value for text font style */
244:            public static final String CSS_VALUE_OBLIQUE = "oblique";
245:
246:            /** A possible value for the DISPLAY key */
247:            public static final String CSS_VALUE_TABLE = "table";
248:
249:            /** A possible value for the DISPLAY key */
250:            public static final String CSS_VALUE_TABLEROW = "table-row";
251:
252:            /** A possible value for the DISPLAY key */
253:            public static final String CSS_VALUE_TABLECELL = "table-cell";
254:
255:            /** the CSS value for a horizontal alignment of an object */
256:            public static final String CSS_VALUE_TEXTALIGNLEFT = "left";
257:
258:            /** the CSS value for a horizontal alignment of an object */
259:            public static final String CSS_VALUE_TEXTALIGNRIGHT = "right";
260:
261:            /** the CSS value for a horizontal alignment of an object */
262:            public static final String CSS_VALUE_TEXTALIGNCENTER = "center";
263:
264:            /** the CSS value for a horizontal alignment of an object */
265:            public static final String CSS_VALUE_TEXTALIGNJUSTIFY = "justify";
266:
267:            /** a CSS value for text decoration */
268:            public static final String CSS_VALUE_UNDERLINE = "underline";
269:
270:            /**
271:             * Parses a length.
272:             * 
273:             * @param string
274:             *            a length in the form of an optional + or -, followed by a
275:             *            number and a unit.
276:             * @return a float
277:             */
278:
279:            public static float parseLength(String string) {
280:                int pos = 0;
281:                int length = string.length();
282:                boolean ok = true;
283:                while (ok && pos < length) {
284:                    switch (string.charAt(pos)) {
285:                    case '+':
286:                    case '-':
287:                    case '0':
288:                    case '1':
289:                    case '2':
290:                    case '3':
291:                    case '4':
292:                    case '5':
293:                    case '6':
294:                    case '7':
295:                    case '8':
296:                    case '9':
297:                    case '.':
298:                        pos++;
299:                        break;
300:                    default:
301:                        ok = false;
302:                    }
303:                }
304:                if (pos == 0)
305:                    return 0f;
306:                if (pos == length)
307:                    return Float.parseFloat(string + "f");
308:                float f = Float.parseFloat(string.substring(0, pos) + "f");
309:                string = string.substring(pos);
310:                // inches
311:                if (string.startsWith("in")) {
312:                    return f * 72f;
313:                }
314:                // centimeters
315:                if (string.startsWith("cm")) {
316:                    return (f / 2.54f) * 72f;
317:                }
318:                // millimeters
319:                if (string.startsWith("mm")) {
320:                    return (f / 25.4f) * 72f;
321:                }
322:                // picas
323:                if (string.startsWith("pc")) {
324:                    return f * 12f;
325:                }
326:                // default: we assume the length was measured in points
327:                return f;
328:            }
329:
330:            /**
331:             * Converts a <CODE>Color</CODE> into a HTML representation of this <CODE>
332:             * Color</CODE>.
333:             * 
334:             * @param s
335:             *            the <CODE>Color</CODE> that has to be converted.
336:             * @return the HTML representation of this <COLOR>Color </COLOR>
337:             */
338:
339:            public static Color decodeColor(String s) {
340:                if (s == null)
341:                    return null;
342:                s = s.toLowerCase().trim();
343:                Color c = (Color) WebColors.getRGBColor(s);
344:                if (c != null)
345:                    return c;
346:                try {
347:                    if (s.startsWith("#")) {
348:                        if (s.length() == 4)
349:                            s = "#" + s.substring(1, 2) + s.substring(1, 2)
350:                                    + s.substring(2, 3) + s.substring(2, 3)
351:                                    + s.substring(3, 4) + s.substring(3, 4);
352:                        if (s.length() == 7)
353:                            return new Color(Integer.parseInt(s.substring(1),
354:                                    16));
355:                    } else if (s.startsWith("rgb")) {
356:                        StringTokenizer tk = new StringTokenizer(
357:                                s.substring(3), " \t\r\n\f(),");
358:                        int[] cc = new int[3];
359:                        for (int k = 0; k < 3; ++k) {
360:                            if (!tk.hasMoreTokens())
361:                                return null;
362:                            String t = tk.nextToken();
363:                            float n;
364:                            if (t.endsWith("%")) {
365:                                n = Float.parseFloat(t.substring(0,
366:                                        t.length() - 1));
367:                                n = n * 255f / 100f;
368:                            } else
369:                                n = Float.parseFloat(t);
370:                            int ni = (int) n;
371:                            if (ni > 255)
372:                                ni = 255;
373:                            else if (ni < 0)
374:                                ni = 0;
375:                            cc[k] = ni;
376:                        }
377:                        return new Color(cc[0], cc[1], cc[2]);
378:                    }
379:                } catch (Exception e) {
380:                }
381:                return null;
382:            }
383:
384:            /**
385:             * This method parses a String with attributes and returns a Properties
386:             * object.
387:             * 
388:             * @param string
389:             *            a String of this form: 'key1="value1"; key2="value2";...
390:             *            keyN="valueN" '
391:             * @return a Properties object
392:             */
393:            public static Properties parseAttributes(String string) {
394:                Properties result = new Properties();
395:                if (string == null)
396:                    return result;
397:                StringTokenizer keyValuePairs = new StringTokenizer(string, ";");
398:                StringTokenizer keyValuePair;
399:                String key;
400:                String value;
401:                while (keyValuePairs.hasMoreTokens()) {
402:                    keyValuePair = new StringTokenizer(keyValuePairs
403:                            .nextToken(), ":");
404:                    if (keyValuePair.hasMoreTokens())
405:                        key = keyValuePair.nextToken().trim();
406:                    else
407:                        continue;
408:                    if (keyValuePair.hasMoreTokens())
409:                        value = keyValuePair.nextToken().trim();
410:                    else
411:                        continue;
412:                    if (value.startsWith("\""))
413:                        value = value.substring(1);
414:                    if (value.endsWith("\""))
415:                        value = value.substring(0, value.length() - 1);
416:                    result.setProperty(key.toLowerCase(), value);
417:                }
418:                return result;
419:            }
420:
421:            /**
422:             * Removes the comments sections of a String.
423:             * 
424:             * @param string
425:             *            the original String
426:             * @param startComment
427:             *            the String that marks the start of a Comment section
428:             * @param endComment
429:             *            the String that marks the end of a Comment section.
430:             * @return the String stripped of its comment section
431:             */
432:            public static String removeComment(String string,
433:                    String startComment, String endComment) {
434:                StringBuffer result = new StringBuffer();
435:                int pos = 0;
436:                int end = endComment.length();
437:                int start = string.indexOf(startComment, pos);
438:                while (start > -1) {
439:                    result.append(string.substring(pos, start));
440:                    pos = string.indexOf(endComment, start) + end;
441:                    start = string.indexOf(startComment, pos);
442:                }
443:                result.append(string.substring(pos));
444:                return result.toString();
445:            }
446:
447:        }
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