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1 package com.dotmarketing.servlets.image;
2
3 import java.awt.Color  ;
4 import java.awt.Font ;
5 import java.awt.Graphics2D ;
6 import java.awt.RenderingHints ;
7 import java.awt.font.FontRenderContext ;
8 import java.awt.geom.Rectangle2D ;
9 import java.awt.image.BufferedImage ;
10 import java.io.BufferedInputStream ;
11 import java.io.BufferedOutputStream ;
12 import java.io.File ;
13 import java.io.FileInputStream ;
14 import java.io.FileOutputStream ;
15 import java.io.IOException ;
16 import java.io.OutputStream ;
17 import java.io.PrintWriter ;
18 import java.net.URLDecoder ;
19 import java.util.HashMap ;
20 import java.util.Iterator ;
21 import java.util.Map ;
22 import java.util.StringTokenizer ;
23
24 import javax.imageio.ImageIO ;
25 import javax.servlet.ServletConfig ;
26 import javax.servlet.ServletContext ;
27 import javax.servlet.ServletException ;
28 import javax.servlet.http.HttpServlet ;
29 import javax.servlet.http.HttpServletRequest ;
30 import javax.servlet.http.HttpServletResponse ;
31
32 import org.apache.commons.logging.LogFactory;
33
34 import com.dotmarketing.cms.factories.PublicEncryptionFactory;
35 import com.dotmarketing.util.Config;
36 import com.dotmarketing.util.UtilMethods;
37
38 public class TitleImage extends HttpServlet {
39
40
43 private static final long serialVersionUID = 1L;
44 private static HashMap hm = new HashMap ();
45 private static ServletContext ctx;
46
47
52 public void init(ServletConfig config) throws ServletException {
53
54 ctx = config.getServletContext();
55
56 hm.put("&sp;", "%20");
57 hm.put("!", "%21");
58 hm.put(""", "%22");
59 hm.put("#", "%23");
60 hm.put("$", "%24");
61 hm.put("%", "%25");
62 hm.put("&", "%26");
63 hm.put("'", "%27");
64 hm.put("(", "%28");
65 hm.put(")", "%29");
66 hm.put("*", "%2A");
67 hm.put("+", "%2B");
68 hm.put(",", "%2C");
69 hm.put("‐", "%2D");
70 hm.put("−", "%2D");
71 hm.put(".", "%2E");
72 hm.put("/", "%2F");
73 hm.put(":", "%3A");
74 hm.put(";", "%3B");
75 hm.put("<", "%3C");
76 hm.put("=", "%3D");
77 hm.put(">", "%3E");
78 hm.put("?", "%3F");
79 hm.put("@", "%40");
80 hm.put("[", "%5B");
81 hm.put("\", "%5C");
82 hm.put("]", "%5D");
83 hm.put("ˆ", "%5E");
84 hm.put("_", "%5F");
85 hm.put("―", "%5F");
86 hm.put("`", "%60");
87 hm.put("{", "%7B");
88 hm.put("|", "%7C");
89 hm.put("}", "%7D");
90 hm.put("˜", "%7E");
91 hm.put("‚", "%82");
92 hm.put("ƒ", "%83");
93 hm.put("„", "%84");
94 hm.put("…", "%85");
95 hm.put("&ldots;", "%85");
96 hm.put("†", "%86");
97 hm.put("‡", "%87");
98 hm.put("‰", "%89");
99 hm.put("Š", "%8A");
100 hm.put("‹", "%8B");
101 hm.put("Œ", "%8C");
102 hm.put("‘", "%91");
103 hm.put("’", "%91");
104 hm.put("’", "%92");
105 hm.put("“", "%93");
106 hm.put("”", "%93");
107 hm.put("”", "%94");
108 hm.put("•", "%95");
109 hm.put("–", "%96");
110 hm.put("&endash;", "%96");
111 hm.put("—", "%97");
112 hm.put("&emdash;", "%97");
113 hm.put("˜", "%98");
114 hm.put("™", "%99");
115 hm.put("š", "%9A");
116 hm.put("›", "%9B");
117 hm.put("œ", "%9C");
118 hm.put("Ÿ", "%9F");
119 hm.put(" ", "%A0");
120 hm.put("¡", "%a1");
121 hm.put("¢", "%A2");
122 hm.put("£", "%A3");
123 hm.put("¤", "%A4");
124 hm.put("¥", "%A5");
125 hm.put("¦", "%A6");
126 hm.put("&brkbar;", "%A6");
127 hm.put("§", "%A7");
128 hm.put("¨", "%A8");
129 hm.put("¨", "%A8");
130 hm.put("©", "%A9");
131 hm.put("ª", "%AA");
132 hm.put("«", "%AB");
133 hm.put("¬", "%AC");
134 hm.put("­", "%AD");
135 hm.put("®", "%AE");
136 hm.put("¯", "%AF");
137 hm.put("&hibar;", "%AF");
138 hm.put("°", "%B0");
139 hm.put("±", "%B1");
140 hm.put("²", "%B2");
141 hm.put("³", "%B3");
142 hm.put("´", "%B4");
143 hm.put("µ", "%B5");
144 hm.put("¶", "%B6");
145 hm.put("·", "%B7");
146 hm.put("¸", "%B8");
147 hm.put("¹", "%B9");
148 hm.put("º", "%BA");
149 hm.put("»", "%BB");
150 hm.put("¼", "%BC");
151 hm.put("½", "%BD");
152 hm.put("½", "%BD");
153 hm.put("¾", "%BE");
154 hm.put("¿", "%BF");
155 hm.put("À", "%C0");
156 hm.put("Á", "%C1");
157 hm.put("Â", "%C2");
158 hm.put("Ã", "%C3");
159 hm.put("Ä", "%C4");
160 hm.put("Å", "%C5");
161 hm.put("Æ", "%C6");
162 hm.put("Ç", "%C7");
163 hm.put("È", "%C8");
164 hm.put("É", "%C9");
165 hm.put("Ê", "%CA");
166 hm.put("Ë", "%CB");
167 hm.put("Ì", "%CC");
168 hm.put("Í", "%CD");
169 hm.put("Î", "%CE");
170 hm.put("Ï", "%CF");
171 hm.put("Ð", "%D0");
172 hm.put("Ñ", "%D1");
173 hm.put("Ò", "%D2");
174 hm.put("Ó", "%D3");
175 hm.put("Ô", "%D4");
176 hm.put("Õ", "%D5");
177 hm.put("Ö", "%D6");
178 hm.put("×", "%D7");
179 hm.put("Ø", "%D8");
180 hm.put("Ù", "%D9");
181 hm.put("Ú", "%DA");
182 hm.put("Û", "%DB");
183 hm.put("Ü", "%DC");
184 hm.put("Ý", "%DD");
185 hm.put("Þ", "%DE");
186 hm.put("ß", "%DF");
187 hm.put("à", "%E0");
188 hm.put("á", "%E1");
189 hm.put("â", "%E2");
190 hm.put("ã", "%E3");
191 hm.put("ä", "%E4");
192 hm.put("å", "%E5");
193 hm.put("æ", "%E6");
194 hm.put("ç", "%E7");
195 hm.put("è", "%E8");
196 hm.put("é", "%E9");
197 hm.put("ê", "%EA");
198 hm.put("ë", "%EB");
199 hm.put("ì", "%EC");
200 hm.put("í", "%ED");
201 hm.put("î", "%EE");
202 hm.put("ï", "%EF");
203 hm.put("ð", "%F0");
204 hm.put("ñ", "%F1");
205 hm.put("ò", "%F2");
206 hm.put("ó", "%F3");
207 hm.put("ô", "%F4");
208 hm.put("õ", "%F5");
209 hm.put("ö", "%F6");
210 hm.put("÷", "%F7");
211 hm.put("ø", "%F8");
212 hm.put("ù", "%F9");
213 hm.put("ú", "%FA");
214 hm.put("û", "%FB");
215 hm.put("ü", "%FC");
216 hm.put("ý", "%FD");
217 hm.put("þ", "%FE");
218 hm.put("ÿ", "%FF");
219
220 File file = new File (config.getServletContext().getRealPath(Config.getStringProperty("PATH_TO_TITLE_IMAGES")));
221 file.mkdirs();
222
223 String [] filenames = file.list();
225
226 for (int i = 0; i < filenames.length; i++) {
227 new File (config.getServletContext().getRealPath(Config.getStringProperty("PATH_TO_TITLE_IMAGES") + filenames[i])).delete();
228 }
229 }
230
231 public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException , IOException {
232 long time = System.currentTimeMillis();
233
234 String text = request.getParameter("text");
235 String parsedQueryString = request.getQueryString();
236
237
238 if (text == null) {
239 String [] fonts = new File (ctx.getRealPath("/WEB-INF/fonts/")).list();
240 text = "accepted params: text,font,size,color,background,nocache,aa,break";
241 response.setContentType("text/html");
242
243 PrintWriter out = response.getWriter();
244 out.println("<html>");
245 out.println("<body>");
246 out.println("<p>");
247 out.println("Usage: " + request.getServletPath() + "?params[]<BR>");
248 out.println("Acceptable Params are: <UL>");
249 out.println("<LI><B>text</B><BR>");
250 out.println("The body of the image");
251 out.println("<LI><B>font</B><BR>");
252 out.println("Available Fonts (in folder '/WEB-INF/fonts/') <UL>");
253
254 for (int i = 0; i < fonts.length; i++) {
255 if (!"CVS".equals(fonts[i])) {
256 out.println("<LI>" + fonts[i]);
257 }
258 }
259
260 out.println("</UL>");
261
262 out.println("<LI><B>size</B><BR>");
263 out.println("An integer, i.e. size=100");
264 out.println("<LI><B>color</B><BR>");
265 out.println("in rgb, i.e. color=255,0,0");
266 out.println("<LI><B>background</B><BR>");
267 out.println("in rgb, i.e. background=0,0,255");
268 out.println("<LI><B>aa</B><BR>");
269 out.println("antialias (does not seem to work), aa=true");
270 out.println("<LI><B>nocache</B><BR>");
271 out.println("if nocache is set, we will write out the image file every hit. Otherwise, will write it the first time and then read the file");
272 out.println("<LI><B>break</B><BR>");
273 out.println("An integer greater than 0 (zero), i.e. break=20");
274 out.println("</UL>");
275
276 out.println("</UL>");
277
278 out.println("Example:<BR>");
279 out.println("<img border=1 SRC=\"" + request.getServletPath()
280 + "?font=arial.ttf&text=testing&color=255,0,0&size=100\"><BR>");
281 out.println("<img border=1 SRC='" + request.getServletPath()
282 + "?font=arial.ttf&text=testing&color=255,0,0&size=100'><BR>");
283
284 out.println("</body>");
285 out.println("</html>");
286
287 return;
288 }
289
290 String myFile = (request.getQueryString() == null) ? "empty" : PublicEncryptionFactory.digestString(
293 parsedQueryString).replace('\\', '_').replace('/', '_');
294 parsedQueryString = URLDecoder.decode(parsedQueryString, "ISO-8859-1");
295
296
297 myFile = Config.getStringProperty("PATH_TO_TITLE_IMAGES") + myFile + ".png";
298 File file = new File (ctx.getRealPath(myFile));
299
300 if (!file.exists() || (request.getParameter("nocache") != null)) {
302 StringTokenizer st = null;
303 Iterator i = hm.entrySet().iterator();
305 while (i.hasNext()) {
306 Map.Entry entry = (Map.Entry ) i.next();
307 String key = (String ) entry.getKey();
308 if (parsedQueryString.indexOf(key) > -1) {
309 String val = (String ) entry.getValue();
310 parsedQueryString = UtilMethods.replace(parsedQueryString, key, val);
311 }
312 }
313
314 st = new StringTokenizer (parsedQueryString, "&");
316 while (st.hasMoreTokens()) {
317 try {
318 String x = st.nextToken();
319 String key = x.split("=")[0];
320 String val = x.split("=")[1];
321
322 if ("text".equals(key)) {
323 text = val;
324 }
325 } catch (Exception e) {
326
327 }
328 }
329 text = URLDecoder.decode(text, "ISO-8859-1");
330
331 LogFactory.getLog(this.getClass()).info("building title image:" + file.getAbsolutePath());
332 file.createNewFile();
333
334 try {
335 String font_file = "/WEB-INF/fonts/arial.ttf";
338
339 if (request.getParameter("font") != null) {
340 font_file = "/WEB-INF/fonts/" + request.getParameter("font");
341 }
342
343 font_file = ctx.getRealPath(font_file);
344
345 float size = 20.0f;
346
347 if (request.getParameter("size") != null) {
348 size = Float.parseFloat(request.getParameter("size"));
349 }
350
351 Color background = Color.white;
352
353 if (request.getParameter("background") != null) {
354 try {
355 st = new StringTokenizer (request.getParameter("background"), ",");
356 int x = Integer.parseInt(st.nextToken());
357 int y = Integer.parseInt(st.nextToken());
358 int z = Integer.parseInt(st.nextToken());
359 background = new Color (x, y, z);
360 } catch (Exception e) {
361 }
362 }
363
364 Color color = Color.black;
365
366 if (request.getParameter("color") != null) {
367 try {
368 st = new StringTokenizer (request.getParameter("color"), ",");
369 int x = Integer.parseInt(st.nextToken());
370 int y = Integer.parseInt(st.nextToken());
371 int z = Integer.parseInt(st.nextToken());
372 color = new Color (x, y, z);
373 } catch (Exception e) {
374 System.out.println(e);
375 }
376 }
377
378 int intBreak = 0;
379 if (request.getParameter("break") != null) {
380 try {
381 intBreak = Integer.parseInt(request.getParameter("break"));
382 } catch (Exception e) {
383 }
384 }
385
386 java.util.ArrayList <String > lines = null;
387
388 if (intBreak > 0) {
389 lines = new java.util.ArrayList <String >(10);
390 lines.ensureCapacity(10);
391
392 int start = 0;
393 String line = null;
394 int offSet;
395
396 for (;;) {
397 try {
398 for (; isWhitespace(text.charAt(start)); ++start);
399
400 if (isWhitespace(text.charAt(start+intBreak-1))) {
401 lines.add(text.substring(start, start+intBreak));
402 start += intBreak;
403 } else {
404 for (offSet = -1; !isWhitespace(text.charAt(start+intBreak+offSet)); ++offSet);
405 lines.add(text.substring(start, start+intBreak+offSet));
406 start += intBreak+offSet;
407 }
408 } catch (Exception e) {
409 if (text.length() > start)
410 lines.add(leftTrim(text.substring(start)));
411 break;
412 }
413 }
414 } else {
415 java.util.StringTokenizer tokens = new java.util.StringTokenizer (text, "|");
416
417 if (tokens.hasMoreTokens()) {
418 lines = new java.util.ArrayList <String >(10);
419 lines.ensureCapacity(10);
420
421 for (; tokens.hasMoreTokens();)
422 lines.add(leftTrim(tokens.nextToken()));
423 }
424 }
425
426 Font font = Font.createFont(Font.TRUETYPE_FONT, new FileInputStream (font_file));
427 font = font.deriveFont(size);
428
429 BufferedImage buffer = new BufferedImage (1, 1, BufferedImage.TYPE_INT_RGB);
430 Graphics2D g2 = buffer.createGraphics();
431
432 if (request.getParameter("aa") != null) {
433 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
434 } else {
435 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
436 }
437
438 FontRenderContext fc = g2.getFontRenderContext();
439
440 Rectangle2D bounds = null;
441
442
444 int width = 0;
445 int height = 0;
446 int offSet = 0;
447 if (1 < lines.size()) {
448
449 int heightMultiplier = 0;
450 int maxWidth = 0;
451 for (; heightMultiplier < lines.size(); ++heightMultiplier) {
452 bounds = font.getStringBounds(lines.get(heightMultiplier), fc);
453 if (maxWidth < bounds.getWidth())
454 maxWidth = (int) bounds.getWidth();
455 }
456
457 width = maxWidth;
458 height = ((int) bounds.getHeight())*lines.size();
459 offSet = ((int) (bounds.getHeight()*0.2))*(lines.size()-1);
460 } else {
461 bounds = font.getStringBounds(text, fc);
462 width = (int) bounds.getWidth();
463 height = (int) bounds.getHeight();
464 }
465
466 buffer = new BufferedImage (width, height-offSet, BufferedImage.TYPE_INT_RGB);
468 g2 = buffer.createGraphics();
469 g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
470 g2.setFont(font);
471
472 g2.setColor(background);
474 g2.fillRect(0, 0, width, height);
475 g2.setColor(color);
476
477 if (0 < lines.size()) {
478 for (int numLine = 0; numLine < lines.size(); ++numLine)
479 g2.drawString(lines.get(numLine), 0, (int) -bounds.getY()*(numLine+1));
480 } else {
481 g2.drawString(text, 0, (int) -bounds.getY());
482 }
483
484 BufferedOutputStream out = new BufferedOutputStream (new FileOutputStream (file));
485
486 ImageIO.write(buffer, "png", out);
488 out.close();
489 } catch (Exception ex) {
490 System.out.println(ex);
491 }
492 }
493
494 response.setContentType("image/png");
496
497 BufferedInputStream bis = new BufferedInputStream (new FileInputStream (file));
498 OutputStream os = response.getOutputStream();
499 byte[] buf = new byte[4096];
500 int i = 0;
501
502 while ((i = bis.read(buf)) != -1) {
503 os.write(buf, 0, i);
504 }
505
506 os.close();
507 bis.close();
508 LogFactory.getLog(this.getClass()).debug("time to build title: " + (System.currentTimeMillis() - time) + "ms");
509
510 return;
511 }
512
513
520 private boolean isWhitespace(char c) {
521 int ic = (int) c;
522 char temp = '\u0020';
523 int itemp = (int) temp;
524 return (((int) c) <= ((int) '\u0020'));
525 }
526
527
534 private String leftTrim(String string) {
535 int i = 0;
536 for (; i < string.length(); ++i) {
537 if (!isWhitespace(string.charAt(i)))
538 break;
539 }
540 return string.substring(i);
541 }
542
543 } |
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