1 /* $Id: map.c,v 1.30 2003/09/24 18:49:00 ukai Exp $ */
2 /*
3 * client-side image maps
4 */
5 #include "fm.h"
6 #include <math.h>
7
8 MapList *
searchMapList(Buffer * buf,char * name)9 searchMapList(Buffer *buf, char *name)
10 {
11 MapList *ml;
12
13 if (name == NULL)
14 return NULL;
15 for (ml = buf->maplist; ml != NULL; ml = ml->next) {
16 if (!Strcmp_charp(ml->name, name))
17 break;
18 }
19 return ml;
20 }
21
22 #ifdef USE_IMAGE
23 static int
inMapArea(MapArea * a,int x,int y)24 inMapArea(MapArea * a, int x, int y)
25 {
26 int i;
27 double r1, r2, s, c, t;
28
29 if (!a)
30 return FALSE;
31 switch (a->shape) {
32 case SHAPE_RECT:
33 if (x >= a->coords[0] && y >= a->coords[1] &&
34 x <= a->coords[2] && y <= a->coords[3])
35 return TRUE;
36 break;
37 case SHAPE_CIRCLE:
38 if ((x - a->coords[0]) * (x - a->coords[0])
39 + (y - a->coords[1]) * (y - a->coords[1])
40 <= a->coords[2] * a->coords[2])
41 return TRUE;
42 break;
43 case SHAPE_POLY:
44 for (t = 0, i = 0; i < a->ncoords; i += 2) {
45 r1 = sqrt((double)(x - a->coords[i]) * (x - a->coords[i])
46 + (double)(y - a->coords[i + 1]) * (y -
47 a->coords[i + 1]));
48 r2 = sqrt((double)(x - a->coords[i + 2]) * (x - a->coords[i + 2])
49 + (double)(y - a->coords[i + 3]) * (y -
50 a->coords[i + 3]));
51 if (r1 == 0 || r2 == 0)
52 return TRUE;
53 s = ((double)(x - a->coords[i]) * (y - a->coords[i + 3])
54 - (double)(x - a->coords[i + 2]) * (y -
55 a->coords[i +
56 1])) / r1 / r2;
57 c = ((double)(x - a->coords[i]) * (x - a->coords[i + 2])
58 + (double)(y - a->coords[i + 1]) * (y -
59 a->coords[i +
60 3])) / r1 / r2;
61 t += atan2(s, c);
62 }
63 if (fabs(t) > 2 * 3.14)
64 return TRUE;
65 break;
66 case SHAPE_DEFAULT:
67 return TRUE;
68 default:
69 break;
70 }
71 return FALSE;
72 }
73
74 static int
nearestMapArea(MapList * ml,int x,int y)75 nearestMapArea(MapList *ml, int x, int y)
76 {
77 ListItem *al;
78 MapArea *a;
79 int i, l, n = -1, min = -1, limit = pixel_per_char * pixel_per_char
80 + pixel_per_line * pixel_per_line;
81
82 if (!ml || !ml->area)
83 return n;
84 for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
85 a = (MapArea *) al->ptr;
86 if (a) {
87 l = (a->center_x - x) * (a->center_x - x)
88 + (a->center_y - y) * (a->center_y - y);
89 if ((min < 0 || l < min) && l < limit) {
90 n = i;
91 min = l;
92 }
93 }
94 }
95 return n;
96 }
97
98 static int
searchMapArea(Buffer * buf,MapList * ml,Anchor * a_img)99 searchMapArea(Buffer *buf, MapList *ml, Anchor *a_img)
100 {
101 ListItem *al;
102 MapArea *a;
103 int i, n;
104 int px, py;
105
106 if (!(ml && ml->area && ml->area->nitem))
107 return -1;
108 if (!getMapXY(buf, a_img, &px, &py))
109 return -1;
110 n = -ml->area->nitem;
111 for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
112 a = (MapArea *) al->ptr;
113 if (!a)
114 continue;
115 if (n < 0 && inMapArea(a, px, py)) {
116 if (a->shape == SHAPE_DEFAULT) {
117 if (n == -ml->area->nitem)
118 n = -i;
119 }
120 else
121 n = i;
122 }
123 }
124 if (n == -ml->area->nitem)
125 return nearestMapArea(ml, px, py);
126 else if (n < 0)
127 return -n;
128 return n;
129 }
130
131 MapArea *
retrieveCurrentMapArea(Buffer * buf)132 retrieveCurrentMapArea(Buffer *buf)
133 {
134 Anchor *a_img, *a_form;
135 FormItemList *fi;
136 MapList *ml;
137 ListItem *al;
138 MapArea *a;
139 int i, n;
140
141 a_img = retrieveCurrentImg(buf);
142 if (!(a_img && a_img->image && a_img->image->map))
143 return NULL;
144 a_form = retrieveCurrentForm(buf);
145 if (!(a_form && a_form->url))
146 return NULL;
147 fi = (FormItemList *)a_form->url;
148 if (!(fi && fi->parent && fi->parent->item))
149 return NULL;
150 fi = fi->parent->item;
151 ml = searchMapList(buf, fi->value ? fi->value->ptr : NULL);
152 if (!ml)
153 return NULL;
154 n = searchMapArea(buf, ml, a_img);
155 if (n < 0)
156 return NULL;
157 for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
158 a = (MapArea *) al->ptr;
159 if (a && i == n)
160 return a;
161 }
162 return NULL;
163 }
164
165 int
getMapXY(Buffer * buf,Anchor * a,int * x,int * y)166 getMapXY(Buffer *buf, Anchor *a, int *x, int *y)
167 {
168 if (!buf || !a || !a->image || !x || !y)
169 return 0;
170 *x = (int)((buf->currentColumn + buf->cursorX
171 - COLPOS(buf->currentLine, a->start.pos) + 0.5)
172 * pixel_per_char) - a->image->xoffset;
173 *y = (int)((buf->currentLine->linenumber - a->image->y + 0.5)
174 * pixel_per_line) - a->image->yoffset;
175 if (*x <= 0)
176 *x = 1;
177 if (*y <= 0)
178 *y = 1;
179 return 1;
180 }
181 #endif
182
183 Anchor *
retrieveCurrentMap(Buffer * buf)184 retrieveCurrentMap(Buffer *buf)
185 {
186 Anchor *a;
187 FormItemList *fi;
188
189 a = retrieveCurrentForm(buf);
190 if (!a || !a->url)
191 return NULL;
192 fi = (FormItemList *)a->url;
193 if (fi->parent->method == FORM_METHOD_INTERNAL &&
194 !Strcmp_charp(fi->parent->action, "map"))
195 return a;
196 return NULL;
197 }
198
199 #if defined(USE_IMAGE) || defined(MENU_MAP)
200 MapArea *
follow_map_menu(Buffer * buf,char * name,Anchor * a_img,int x,int y)201 follow_map_menu(Buffer *buf, char *name, Anchor *a_img, int x, int y)
202 {
203 MapList *ml;
204 ListItem *al;
205 int i, selected = -1;
206 int initial = 0;
207 #ifdef MENU_MAP
208 MapArea *a;
209 char **label;
210 #endif
211
212 ml = searchMapList(buf, name);
213 if (ml == NULL || ml->area == NULL || ml->area->nitem == 0)
214 return NULL;
215
216 #ifdef USE_IMAGE
217 initial = searchMapArea(buf, ml, a_img);
218 if (initial < 0)
219 initial = 0;
220 else if (!image_map_list) {
221 selected = initial;
222 goto map_end;
223 }
224 #endif
225
226 #ifdef MENU_MAP
227 label = New_N(char *, ml->area->nitem + 1);
228 for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
229 a = (MapArea *) al->ptr;
230 if (a)
231 label[i] = *a->alt ? a->alt : a->url;
232 else
233 label[i] = "";
234 }
235 label[ml->area->nitem] = NULL;
236
237 optionMenu(x, y, label, &selected, initial, NULL);
238 #endif
239
240 #ifdef USE_IMAGE
241 map_end:
242 #endif
243 if (selected >= 0) {
244 for (i = 0, al = ml->area->first; al != NULL; i++, al = al->next) {
245 if (al->ptr && i == selected)
246 return (MapArea *) al->ptr;
247 }
248 }
249 return NULL;
250 }
251 #endif
252
253 #ifndef MENU_MAP
254 char *map1 = "<HTML><HEAD><TITLE>Image map links</TITLE></HEAD>\
255 <BODY><H1>Image map links</H1>\
256 <table>";
257
258 Buffer *
follow_map_panel(Buffer * buf,char * name)259 follow_map_panel(Buffer *buf, char *name)
260 {
261 Str mappage;
262 MapList *ml;
263 ListItem *al;
264 MapArea *a;
265 ParsedURL pu;
266 char *p, *q;
267 Buffer *newbuf;
268
269 ml = searchMapList(buf, name);
270 if (ml == NULL)
271 return NULL;
272
273 mappage = Strnew_charp(map1);
274 for (al = ml->area->first; al != NULL; al = al->next) {
275 a = (MapArea *) al->ptr;
276 if (!a)
277 continue;
278 parseURL2(a->url, &pu, baseURL(buf));
279 p = parsedURL2Str(&pu)->ptr;
280 q = html_quote(p);
281 if (DecodeURL)
282 p = html_quote(url_decode2(p, buf));
283 else
284 p = q;
285 Strcat_m_charp(mappage, "<tr valign=top><td><a href=\"", q, "\">",
286 html_quote(*a->alt ? a->alt : mybasename(a->url)),
287 "</a><td>", p, NULL);
288 }
289 Strcat_charp(mappage, "</table></body></html>");
290
291 newbuf = loadHTMLString(mappage);
292 #ifdef USE_M17N
293 if (newbuf)
294 newbuf->document_charset = buf->document_charset;
295 #endif
296 return newbuf;
297 }
298 #endif
299
300 MapArea *
newMapArea(char * url,char * target,char * alt,char * shape,char * coords)301 newMapArea(char *url, char *target, char *alt, char *shape, char *coords)
302 {
303 MapArea *a = New(MapArea);
304 #ifdef USE_IMAGE
305 char *p;
306 int i, max;
307 #endif
308
309 a->url = url;
310 a->target = target;
311 a->alt = alt ? alt : "";
312 #ifdef USE_IMAGE
313 a->shape = SHAPE_RECT;
314 if (shape) {
315 if (!strcasecmp(shape, "default"))
316 a->shape = SHAPE_DEFAULT;
317 else if (!strncasecmp(shape, "rect", 4))
318 a->shape = SHAPE_RECT;
319 else if (!strncasecmp(shape, "circ", 4))
320 a->shape = SHAPE_CIRCLE;
321 else if (!strncasecmp(shape, "poly", 4))
322 a->shape = SHAPE_POLY;
323 else
324 a->shape = SHAPE_UNKNOWN;
325 }
326 a->coords = NULL;
327 a->ncoords = 0;
328 a->center_x = 0;
329 a->center_y = 0;
330 if (a->shape == SHAPE_UNKNOWN || a->shape == SHAPE_DEFAULT)
331 return a;
332 if (!coords) {
333 a->shape = SHAPE_UNKNOWN;
334 return a;
335 }
336 if (a->shape == SHAPE_RECT) {
337 a->coords = New_N(short, 4);
338 a->ncoords = 4;
339 }
340 else if (a->shape == SHAPE_CIRCLE) {
341 a->coords = New_N(short, 3);
342 a->ncoords = 3;
343 }
344 max = a->ncoords;
345 for (i = 0, p = coords; (a->shape == SHAPE_POLY || i < a->ncoords) && *p;) {
346 while (IS_SPACE(*p))
347 p++;
348 if (!IS_DIGIT(*p) && *p != '-' && *p != '+')
349 break;
350 if (a->shape == SHAPE_POLY) {
351 if (max <= i) {
352 max = i ? i * 2 : 6;
353 a->coords = New_Reuse(short, a->coords, max + 2);
354 }
355 a->ncoords++;
356 }
357 a->coords[i] = (short)atoi(p);
358 i++;
359 if (*p == '-' || *p == '+')
360 p++;
361 while (IS_DIGIT(*p))
362 p++;
363 if (*p != ',' && !IS_SPACE(*p))
364 break;
365 while (IS_SPACE(*p))
366 p++;
367 if (*p == ',')
368 p++;
369 }
370 if (i != a->ncoords || (a->shape == SHAPE_POLY && a->ncoords < 6)) {
371 a->shape = SHAPE_UNKNOWN;
372 a->coords = NULL;
373 a->ncoords = 0;
374 return a;
375 }
376 if (a->shape == SHAPE_POLY) {
377 a->ncoords = a->ncoords / 2 * 2;
378 a->coords[a->ncoords] = a->coords[0];
379 a->coords[a->ncoords + 1] = a->coords[1];
380 }
381 if (a->shape == SHAPE_CIRCLE) {
382 a->center_x = a->coords[0];
383 a->center_y = a->coords[1];
384 }
385 else {
386 for (i = 0; i < a->ncoords / 2; i++) {
387 a->center_x += a->coords[2 * i];
388 a->center_y += a->coords[2 * i + 1];
389 }
390 a->center_x /= a->ncoords / 2;
391 a->center_y /= a->ncoords / 2;
392 }
393 #endif
394 return a;
395 }
396
397 /* append image map links */
398 static void
append_map_info(Buffer * buf,Str tmp,FormItemList * fi)399 append_map_info(Buffer *buf, Str tmp, FormItemList *fi)
400 {
401 MapList *ml;
402 ListItem *al;
403 MapArea *a;
404 ParsedURL pu;
405 char *p, *q;
406
407 ml = searchMapList(buf, fi->value ? fi->value->ptr : NULL);
408 if (ml == NULL)
409 return;
410
411 Strcat_m_charp(tmp,
412 "<tr valign=top><td colspan=2>Links of current image map",
413 "<tr valign=top><td colspan=2><table>", NULL);
414 for (al = ml->area->first; al != NULL; al = al->next) {
415 a = (MapArea *) al->ptr;
416 if (!a)
417 continue;
418 parseURL2(a->url, &pu, baseURL(buf));
419 q = html_quote(parsedURL2Str(&pu)->ptr);
420 p = html_quote(url_decode2(a->url, buf));
421 Strcat_m_charp(tmp, "<tr valign=top><td> <td><a href=\"",
422 q, "\">",
423 html_quote(*a->alt ? a->alt : mybasename(a->url)),
424 "</a><td>", p, "\n", NULL);
425 }
426 Strcat_charp(tmp, "</table>");
427 }
428
429 /* append links */
430 static void
append_link_info(Buffer * buf,Str html,LinkList * link)431 append_link_info(Buffer *buf, Str html, LinkList * link)
432 {
433 LinkList *l;
434 ParsedURL pu;
435 char *url;
436
437 if (!link)
438 return;
439
440 Strcat_charp(html, "<hr width=50%><h1>Link information</h1><table>\n");
441 for (l = link; l; l = l->next) {
442 if (l->url) {
443 parseURL2(l->url, &pu, baseURL(buf));
444 url = html_quote(parsedURL2Str(&pu)->ptr);
445 }
446 else
447 url = "(empty)";
448 Strcat_m_charp(html, "<tr valign=top><td><a href=\"", url, "\">",
449 l->title ? html_quote(l->title) : "(empty)", "</a><td>",
450 NULL);
451 if (l->type == LINK_TYPE_REL)
452 Strcat_charp(html, "[Rel]");
453 else if (l->type == LINK_TYPE_REV)
454 Strcat_charp(html, "[Rev]");
455 if (!l->url)
456 url = "(empty)";
457 else
458 url = html_quote(url_decode2(l->url, buf));
459 Strcat_m_charp(html, "<td>", url, NULL);
460 if (l->ctype)
461 Strcat_m_charp(html, " (", html_quote(l->ctype), ")", NULL);
462 Strcat_charp(html, "\n");
463 }
464 Strcat_charp(html, "</table>\n");
465 }
466
467 /* append frame URL */
468 static void
append_frame_info(Buffer * buf,Str html,struct frameset * set,int level)469 append_frame_info(Buffer *buf, Str html, struct frameset *set, int level)
470 {
471 char *p, *q;
472 int i, j;
473
474 if (!set)
475 return;
476
477 for (i = 0; i < set->col * set->row; i++) {
478 union frameset_element frame = set->frame[i];
479 if (frame.element != NULL) {
480 switch (frame.element->attr) {
481 case F_UNLOADED:
482 case F_BODY:
483 if (frame.body->url == NULL)
484 break;
485 Strcat_charp(html, "<pre_int>");
486 for (j = 0; j < level; j++)
487 Strcat_charp(html, " ");
488 q = html_quote(frame.body->url);
489 Strcat_m_charp(html, "<a href=\"", q, "\">", NULL);
490 if (frame.body->name) {
491 p = html_quote(url_unquote_conv(frame.body->name,
492 buf->document_charset));
493 Strcat_charp(html, p);
494 }
495 if (DecodeURL)
496 p = html_quote(url_decode2(frame.body->url, buf));
497 else
498 p = q;
499 Strcat_m_charp(html, " ", p, "</a></pre_int><br>\n", NULL);
500 #ifdef USE_SSL
501 if (frame.body->ssl_certificate)
502 Strcat_m_charp(html,
503 "<blockquote><h2>SSL certificate</h2><pre>\n",
504 html_quote(frame.body->ssl_certificate),
505 "</pre></blockquote>\n", NULL);
506 #endif
507 break;
508 case F_FRAMESET:
509 append_frame_info(buf, html, frame.set, level + 1);
510 break;
511 }
512 }
513 }
514 }
515
516 /*
517 * information of current page and link
518 */
519 Buffer *
page_info_panel(Buffer * buf)520 page_info_panel(Buffer *buf)
521 {
522 Str tmp = Strnew_size(1024);
523 Anchor *a;
524 ParsedURL pu;
525 TextListItem *ti;
526 struct frameset *f_set = NULL;
527 int all;
528 char *p, *q;
529 #ifdef USE_M17N
530 wc_ces_list *list;
531 char charset[16];
532 #endif
533 Buffer *newbuf;
534
535 Strcat_charp(tmp, "<html><head>\
536 <title>Information about current page</title>\
537 </head><body>\
538 <h1>Information about current page</h1>\n");
539 if (buf == NULL)
540 goto end;
541 all = buf->allLine;
542 if (all == 0 && buf->lastLine)
543 all = buf->lastLine->linenumber;
544 #ifdef USE_M17N
545 Strcat_charp(tmp, "<form method=internal action=charset>");
546 #endif
547 p = url_decode2(parsedURL2Str(&buf->currentURL)->ptr, NULL);
548 Strcat_m_charp(tmp, "<table cellpadding=0>",
549 "<tr valign=top><td nowrap>Title<td>",
550 html_quote(buf->buffername),
551 "<tr valign=top><td nowrap>Current URL<td>",
552 html_quote(p),
553 "<tr valign=top><td nowrap>Document Type<td>",
554 buf->real_type ? html_quote(buf->real_type) : "unknown",
555 "<tr valign=top><td nowrap>Last Modified<td>",
556 html_quote(last_modified(buf)), NULL);
557 #ifdef USE_M17N
558 if (buf->document_charset != InnerCharset) {
559 list = wc_get_ces_list();
560 Strcat_charp(tmp,
561 "<tr><td nowrap>Document Charset<td><select name=charset>");
562 for (; list->name != NULL; list++) {
563 sprintf(charset, "%d", (unsigned int)list->id);
564 Strcat_m_charp(tmp, "<option value=", charset,
565 (buf->document_charset == list->id) ? " selected>"
566 : ">", list->desc, NULL);
567 }
568 Strcat_charp(tmp, "</select>");
569 Strcat_charp(tmp, "<tr><td><td><input type=submit value=Change>");
570 }
571 #endif
572 Strcat_m_charp(tmp,
573 "<tr valign=top><td nowrap>Number of lines<td>",
574 Sprintf("%d", all)->ptr,
575 "<tr valign=top><td nowrap>Transferred bytes<td>",
576 Sprintf("%lu", (unsigned long)buf->trbyte)->ptr, NULL);
577
578 a = retrieveCurrentAnchor(buf);
579 if (a != NULL) {
580 parseURL2(a->url, &pu, baseURL(buf));
581 p = parsedURL2Str(&pu)->ptr;
582 q = html_quote(p);
583 if (DecodeURL)
584 p = html_quote(url_decode2(p, buf));
585 else
586 p = q;
587 Strcat_m_charp(tmp,
588 "<tr valign=top><td nowrap>URL of current anchor<td><a href=\"",
589 q, "\">", p, "</a>", NULL);
590 }
591 a = retrieveCurrentImg(buf);
592 if (a != NULL) {
593 parseURL2(a->url, &pu, baseURL(buf));
594 p = parsedURL2Str(&pu)->ptr;
595 q = html_quote(p);
596 if (DecodeURL)
597 p = html_quote(url_decode2(p, buf));
598 else
599 p = q;
600 Strcat_m_charp(tmp,
601 "<tr valign=top><td nowrap>URL of current image<td><a href=\"",
602 q, "\">", p, "</a>", NULL);
603 }
604 a = retrieveCurrentForm(buf);
605 if (a != NULL) {
606 FormItemList *fi = (FormItemList *)a->url;
607 p = form2str(fi);
608 p = html_quote(url_decode2(p, buf));
609 Strcat_m_charp(tmp,
610 "<tr valign=top><td nowrap>Method/type of current form <td>",
611 p, NULL);
612 if (fi->parent->method == FORM_METHOD_INTERNAL
613 && !Strcmp_charp(fi->parent->action, "map"))
614 append_map_info(buf, tmp, fi->parent->item);
615 }
616 Strcat_charp(tmp, "</table>\n");
617 #ifdef USE_M17N
618 Strcat_charp(tmp, "</form>");
619 #endif
620
621 append_link_info(buf, tmp, buf->linklist);
622
623 if (buf->document_header != NULL) {
624 Strcat_charp(tmp, "<hr width=50%><h1>Header information</h1><pre>\n");
625 for (ti = buf->document_header->first; ti != NULL; ti = ti->next)
626 Strcat_m_charp(tmp, "<pre_int>", html_quote(ti->ptr),
627 "</pre_int>\n", NULL);
628 Strcat_charp(tmp, "</pre>\n");
629 }
630
631 if (buf->frameset != NULL)
632 f_set = buf->frameset;
633 else if (buf->bufferprop & BP_FRAME &&
634 buf->nextBuffer != NULL && buf->nextBuffer->frameset != NULL)
635 f_set = buf->nextBuffer->frameset;
636
637 if (f_set) {
638 Strcat_charp(tmp, "<hr width=50%><h1>Frame information</h1>\n");
639 append_frame_info(buf, tmp, f_set, 0);
640 }
641 #ifdef USE_SSL
642 if (buf->ssl_certificate)
643 Strcat_m_charp(tmp, "<h1>SSL certificate</h1><pre>\n",
644 html_quote(buf->ssl_certificate), "</pre>\n", NULL);
645 #endif
646 end:
647 Strcat_charp(tmp, "</body></html>");
648 newbuf = loadHTMLString(tmp);
649 #ifdef USE_M17N
650 if (newbuf)
651 newbuf->document_charset = buf->document_charset;
652 #endif
653 return newbuf;
654 }
655