webcit/calendar_view.c

   1 /*
   2  * Handles the HTML display of calendar items.
   3  *
   4  * Copyright (c) 1996-2011 by the citadel.org team
   5  *
   6  * This program is open source software.  You can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  */
  20
  21 #include "webcit.h"
  22 #include "webserver.h"
  23 #include "calendar.h"
  24
  25 /* These define how high the hour rows are in the day view */
  26 #define TIMELINE        30
  27 #define EXTRATIMELINE   (TIMELINE / 2)
  28
  29 void embeddable_mini_calendar(int year, int month)
  30 {
  31         struct tm starting_tm;
  32         struct tm tm;
  33         time_t thetime;
  34         int i;
  35         time_t previous_month;
  36         time_t next_month;
  37         time_t colheader_time;
  38         struct tm colheader_tm;
  39         char colheader_label[32];
  40         long weekstart = 0;
  41         char url[256];
  42         char div_id[256];
  43
  44         snprintf(div_id, sizeof div_id, "mini_calendar_%d", rand() );
  45
  46         /* Determine what day to start.  If an impossible value is found, start on Sunday.
  47         */
  48         get_pref_long("weekstart", &weekstart, 17);
  49         if (weekstart > 6) weekstart = 0;
  50
  51         /*
  52         * Now back up to the 1st of the month...
  53         */
  54         memset(&starting_tm, 0, sizeof(struct tm));
  55
  56         starting_tm.tm_year = year - 1900;
  57         starting_tm.tm_mon = month - 1;
  58         starting_tm.tm_mday = 1;
  59         thetime = mktime(&starting_tm);
  60
  61         memcpy(&tm, &starting_tm, sizeof(struct tm));
  62         while (tm.tm_mday != 1) {
  63                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
  64                 localtime_r(&thetime, &tm);
  65         }
  66
  67         /* Determine previous and next months ... for links */
  68         previous_month = thetime - (time_t)864000L;     /* back 10 days */
  69         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
  70
  71         /* Now back up until we're on the user's preferred start day */
  72         localtime_r(&thetime, &tm);
  73         while (tm.tm_wday != weekstart) {
  74                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
  75                 localtime_r(&thetime, &tm);
  76         }
  77
  78         wc_printf("<div class=\"mini_calendar\" id=\"%s\">\n", div_id);
  79
  80         /* Previous month link */
  81         localtime_r(&previous_month, &tm);
  82         wc_printf("<a href=\"javascript:minical_change_month(%d,%d);\">&laquo;</a>",
  83                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
  84
  85         wc_strftime(colheader_label, sizeof colheader_label, "%B", &starting_tm);
  86         wc_printf("&nbsp;&nbsp;"
  87                 "<span class=\"mini_calendar_month_label\">"
  88                 "%s %d"
  89                 "</span>"
  90                 "&nbsp;&nbsp;", colheader_label, year);
  91
  92         /* Next month link */
  93         localtime_r(&next_month, &tm);
  94         wc_printf("<a href=\"javascript:minical_change_month(%d,%d);\">&raquo;</a>",
  95                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
  96
  97         wc_printf("<table border=\"0\" cellpadding=\"1\" cellspacing=\"1\" class=\"mini_calendar_days\">"
  98                 "<tr>");
  99         colheader_time = thetime;
 100         for (i=0; i<7; ++i) {
 101                 colheader_time = thetime + (i * 86400) ;
 102                 localtime_r(&colheader_time, &colheader_tm);
 103                 wc_strftime(colheader_label, sizeof colheader_label, "%A", &colheader_tm);
 104                 wc_printf("<th>%c</th>", colheader_label[0]);
 105
 106         }
 107         wc_printf("</tr>\n");
 108
 109
 110         /* Now do 35 or 42 days */
 111         for (i = 0; i < 42; ++i) {
 112                 localtime_r(&thetime, &tm);
 113
 114                 if (i < 35) {
 115
 116                         /* Before displaying Sunday, start a new row */
 117                         if ((i % 7) == 0) {
 118                                 wc_printf("<tr>");
 119                         }
 120
 121                         if (tm.tm_mon == month-1) {
 122                                 snprintf(url, sizeof url, "readfwd?calview=day?year=%d?month=%d?day=%d",
 123                                         tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday);
 124                                 wc_printf("<td><a href=\"%s\">%d</a></td>", url, tm.tm_mday);
 125                         }
 126                         else {
 127                                 wc_printf("<td> </td>");
 128                         }
 129
 130                         /* After displaying one week, end the row */
 131                         if ((i % 7) == 6) {
 132                                 wc_printf("</tr>\n");
 133                         }
 134
 135                 }
 136
 137                 thetime += (time_t)86400;               /* ahead 24 hours */
 138         }
 139
 140         wc_printf("</table>"                    /* end of inner table */
 141                 "</div>\n");
 142
 143         StrBufAppendPrintf(WC->trailing_javascript,
 144                 "       function minical_change_month(year, month) {                                    \n"
 145                 "               p = 'year=' + year + '&month=' + month                                  \n"
 146                 "                       + '&r=' + CtdlRandomString();                                   \n"
 147                 "               new Ajax.Updater('%s', 'mini_calendar',                                 \n"
 148                 "                       { method: 'get', parameters: p, evalScripts: true } );          \n"
 149                 "       }                                                                               \n"
 150                 "",
 151                 div_id
 152         );
 153
 154 }
 155
 156 /*
 157  * ajax embedder for the above mini calendar
 158  */
 159 void ajax_mini_calendar(void)
 160 {
 161         embeddable_mini_calendar( ibstr("year"), ibstr("month"));
 162 }
 163
 164
 165 /*
 166  * Display one day of a whole month view of a calendar
 167  */
 168 void calendar_month_view_display_events(int year, int month, int day)
 169 {
 170         long hklen;
 171         const char *HashKey;
 172         void *vCal;
 173         HashPos *Pos;
 174         disp_cal *Cal;
 175         icalproperty *p = NULL;
 176         icalproperty *q = NULL;
 177         struct icaltimetype t;
 178         struct icaltimetype end_t;
 179         struct icaltimetype today_start_t;
 180         struct icaltimetype today_end_t;
 181         struct icaltimetype today_t;
 182         struct tm starting_tm;
 183         struct tm ending_tm;
 184         int all_day_event = 0;
 185         int show_event = 0;
 186         char buf[256];
 187         wcsession *WCC = WC;
 188         time_t tt;
 189
 190         if (GetCount(WCC->disp_cal_items) == 0) {
 191                 wc_printf("<br>\n");
 192                 return;
 193         }
 194
 195         /*
 196          * Create an imaginary event which spans the 24 hours of today.  Any events which
 197          * overlap with this one take place at least partially in this day.  We have to
 198          * convert it from a struct tm in order to make it UTC.
 199          */
 200         memset(&starting_tm, 0, sizeof(struct tm));
 201         starting_tm.tm_year = year - 1900;
 202         starting_tm.tm_mon = month - 1;
 203         starting_tm.tm_mday = day;
 204         starting_tm.tm_hour = 0;
 205         starting_tm.tm_min = 0;
 206         today_start_t = icaltime_from_timet_with_zone(mktime(&starting_tm), 0, icaltimezone_get_utc_timezone());
 207         today_start_t.is_utc = 1;
 208
 209         memset(&ending_tm, 0, sizeof(struct tm));
 210         ending_tm.tm_year = year - 1900;
 211         ending_tm.tm_mon = month - 1;
 212         ending_tm.tm_mday = day;
 213         ending_tm.tm_hour = 23;
 214         ending_tm.tm_min = 59;
 215         today_end_t = icaltime_from_timet_with_zone(mktime(&ending_tm), 0, icaltimezone_get_utc_timezone());
 216         today_end_t.is_utc = 1;
 217
 218         /*
 219          * Create another one without caring about the timezone for all day events.
 220          */
 221         today_t = icaltime_null_date();
 222         today_t.year = year;
 223         today_t.month = month;
 224         today_t.day = day;
 225
 226         /*
 227          * Now loop through our list of events to see which ones occur today.
 228          */
 229         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
 230         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
 231                 Cal = (disp_cal*)vCal;
 232                 all_day_event = 0;
 233                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 234                 if (q != NULL) {
 235                         t = icalproperty_get_dtstart(q);
 236                 }
 237                 else {
 238                         memset(&t, 0, sizeof t);
 239                 }
 240                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 241                 if (q != NULL) {
 242                         end_t = icalproperty_get_dtend(q);
 243                 }
 244                 else {
 245                         memset(&end_t, 0, sizeof end_t);
 246                 }
 247                 if (t.is_date) all_day_event = 1;
 248
 249                 if (all_day_event)
 250                 {
 251                         show_event = ical_ctdl_is_overlap(t, end_t, today_t, icaltime_null_time());
 252                 }
 253                 else
 254                 {
 255                         show_event = ical_ctdl_is_overlap(t, end_t, today_start_t, today_end_t);
 256                 }
 257
 258                 /*
 259                  * If we determined that this event occurs today, then display it.
 260                  */
 261                 if (show_event) {
 262
 263                         /* time_t logtt = icaltime_as_timet(t);
 264                         syslog(LOG_DEBUG, "Match on %04d-%02d-%02d for event %x%s on %s",
 265                                 year, month, day,
 266                                 (int)Cal, ((all_day_event) ? " (all day)" : ""),
 267                                 ctime(&logtt)
 268                         ); */
 269
 270                         p = icalcomponent_get_first_property(Cal->cal, ICAL_SUMMARY_PROPERTY);
 271                         if (p == NULL) {
 272                                 p = icalproperty_new_summary(_("Untitled Event"));
 273                                 icalcomponent_add_property(Cal->cal, p);
 274                         }
 275                         if (p != NULL) {
 276
 277                                 if (all_day_event) {
 278                                         wc_printf("<table border=\"0\" cellpadding=\"2\"><TR>"
 279                                                 "<td bgcolor=\"#CCCCDD\">"
 280                                                 );
 281                                 }
 282
 283
 284                                 wc_printf("<font size=\"-1\">"
 285                                         "<a class=\"event%s\" href=\"display_edit_event?"
 286                                         "msgnum=%ld?calview=month?year=%d?month=%d?day=%d\">"
 287                                         ,
 288                                         (Cal->unread)?"_unread":"_read",
 289                                         Cal->cal_msgnum,
 290                                         year, month, day
 291                                 );
 292
 293                                 escputs((char *) icalproperty_get_comment(p));
 294
 295                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
 296
 297                                 wc_printf("<i>%s: %s</i><br>", _("From"), Cal->from);
 298                                 wc_printf("<i>%s</i> ",          _("Summary:"));
 299                                 escputs((char *)icalproperty_get_comment(p));
 300                                 wc_printf("<br>");
 301
 302                                 q = icalcomponent_get_first_property(
 303                                         Cal->cal,
 304                                         ICAL_LOCATION_PROPERTY);
 305                                 if (q) {
 306                                         wc_printf("<i>%s</i> ", _("Location:"));
 307                                         escputs((char *)icalproperty_get_comment(q));
 308                                         wc_printf("<br>");
 309                                 }
 310
 311                                 /*
 312                                  * Only show start/end times if we're actually looking at the VEVENT
 313                                  * component.  Otherwise it shows bogus dates for e.g. timezones
 314                                  */
 315                                 if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 316
 317                                         q = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 318                                         if (q != NULL) {
 319                                                 int no_end = 0;
 320
 321                                                 t = icalproperty_get_dtstart(q);
 322                                                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 323                                                 if (q != NULL) {
 324                                                         end_t = icalproperty_get_dtend(q);
 325                                                 }
 326                                                 else {
 327                                                         /*
 328                                                          * events with starting date/time equal
 329                                                          * ending date/time might get only
 330                                                          * DTSTART but no DTEND
 331                                                          */
 332                                                         no_end = 1;
 333                                                 }
 334
 335                                                 if (t.is_date) {
 336                                                         /* all day event */
 337                                                         struct tm d_tm;
 338
 339                                                         if (!no_end) {
 340                                                                 /* end given, have to adjust it */
 341                                                                 icaltime_adjust(&end_t, -1, 0, 0, 0);
 342                                                         }
 343                                                         memset(&d_tm, 0, sizeof d_tm);
 344                                                         d_tm.tm_year = t.year - 1900;
 345                                                         d_tm.tm_mon = t.month - 1;
 346                                                         d_tm.tm_mday = t.day;
 347                                                         wc_strftime(buf, sizeof buf, "%x", &d_tm);
 348
 349                                                         if (no_end || !icaltime_compare(t, end_t)) {
 350                                                                 wc_printf("<i>%s</i> %s<br>",
 351                                                                         _("Date:"), buf);
 352                                                         }
 353                                                         else {
 354                                                                 wc_printf("<i>%s</i> %s<br>",
 355                                                                         _("Starting date:"), buf);
 356                                                                 d_tm.tm_year = end_t.year - 1900;
 357                                                                 d_tm.tm_mon = end_t.month - 1;
 358                                                                 d_tm.tm_mday = end_t.day;
 359                                                                 wc_strftime(buf, sizeof buf, "%x", &d_tm);
 360                                                                 wc_printf("<i>%s</i> %s<br>",
 361                                                                         _("Ending date:"), buf);
 362                                                         }
 363                                                 }
 364                                                 else {
 365                                                         tt = icaltime_as_timet(t);
 366                                                         webcit_fmt_date(buf, 256, tt, DATEFMT_BRIEF);
 367                                                         if (no_end || !icaltime_compare(t, end_t)) {
 368                                                                 wc_printf("<i>%s</i> %s<br>",
 369                                                                         _("Date/time:"), buf);
 370                                                         }
 371                                                         else {
 372                                                                 wc_printf("<i>%s</i> %s<br>",
 373                                                                         _("Starting date/time:"), buf);
 374                                                                 tt = icaltime_as_timet(end_t);
 375                                                                 webcit_fmt_date(buf, 256, tt, DATEFMT_BRIEF);
 376                                                                 wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
 377                                                         }
 378
 379                                                 }
 380                                         }
 381
 382                                 }
 383
 384                                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DESCRIPTION_PROPERTY);
 385                                 if (q) {
 386                                         wc_printf("<i>%s</i> ", _("Notes:"));
 387                                         escputs((char *)icalproperty_get_comment(q));
 388                                         wc_printf("<br>");
 389                                 }
 390
 391                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
 392                                 wc_printf("</a></font><br>\n");
 393
 394                                 if (all_day_event) {
 395                                         wc_printf("</td></tr></table>");
 396                                 }
 397
 398                         }
 399
 400                 }
 401
 402
 403         }
 404         DeleteHashPos(&Pos);
 405 }
 406
 407
 408 /*
 409  * Display one day of a whole month view of a calendar
 410  */
 411 void calendar_month_view_brief_events(time_t thetime, const char *daycolor) {
 412         long hklen;
 413         const char *HashKey;
 414         void *vCal;
 415         HashPos *Pos;
 416         time_t event_tt;
 417         time_t event_tts;
 418         time_t event_tte;
 419         wcsession *WCC = WC;
 420         struct tm event_tms;
 421         struct tm event_tme;
 422         struct tm today_tm;
 423         icalproperty *p;
 424         icalproperty *e;
 425         struct icaltimetype t;
 426         disp_cal *Cal;
 427         int all_day_event = 0;
 428         char *timeformat;
 429         int time_format;
 430
 431         time_format = get_time_format_cached ();
 432
 433         if (time_format == WC_TIMEFORMAT_24) timeformat="%k:%M";
 434         else timeformat="%I:%M %p";
 435
 436         localtime_r(&thetime, &today_tm);
 437
 438         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
 439         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
 440                 Cal = (disp_cal*)vCal;
 441                 p = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 442                 if (p != NULL) {
 443                         t = icalproperty_get_dtstart(p);
 444                         event_tt = icaltime_as_timet(t);
 445                         event_tts=event_tt;
 446                         if (t.is_date) all_day_event = 1;
 447                         else all_day_event = 0;
 448
 449                         if (all_day_event) {
 450                                 gmtime_r(&event_tts, &event_tms);
 451                         }
 452                         else {
 453                                 localtime_r(&event_tts, &event_tms);
 454                         }
 455                         /* \todo epoch &! daymask */
 456                         if ((event_tms.tm_year == today_tm.tm_year)
 457                                 && (event_tms.tm_mon == today_tm.tm_mon)
 458                         && (event_tms.tm_mday == today_tm.tm_mday)) {
 459
 460
 461                         char sbuf[255];
 462                         char ebuf[255];
 463
 464                         p = icalcomponent_get_first_property(
 465                                 Cal->cal,
 466                                 ICAL_SUMMARY_PROPERTY);
 467                         if (p == NULL) {
 468                                 p = icalproperty_new_summary(_("Untitled Event"));
 469                                 icalcomponent_add_property(Cal->cal, p);
 470                         }
 471                         e = icalcomponent_get_first_property(
 472                                 Cal->cal,
 473                                 ICAL_DTEND_PROPERTY);
 474                         if ((p != NULL) && (e != NULL)) {
 475                                 time_t difftime;
 476                                 int hours, minutes;
 477                                 t = icalproperty_get_dtend(e);
 478                                 event_tte = icaltime_as_timet(t);
 479                                 localtime_r(&event_tte, &event_tme);
 480                                 difftime=(event_tte-event_tts)/60;
 481                                 hours=(int)(difftime / 60);
 482                                 minutes=difftime % 60;
 483                                 wc_printf("<tr><td bgcolor='%s'>%i:%2i</td><td bgcolor='%s'>"
 484                                         "<font size=\"-1\">"
 485                                         "<a class=\"event%s\" href=\"display_edit_event?msgnum=%ld?calview=calbrief?year=%s?month=%s?day=%s\">",
 486                                         daycolor,
 487                                         hours, minutes,
 488                                         (Cal->unread)?"_unread":"_read",
 489                                         daycolor,
 490                                         Cal->cal_msgnum,
 491                                         bstr("year"),
 492                                         bstr("month"),
 493                                         bstr("day")
 494                                         );
 495
 496                                 escputs((char *)
 497                                         icalproperty_get_comment(p));
 498                                 /* \todo: allso ammitime format */
 499                                 wc_strftime(&sbuf[0], sizeof(sbuf), timeformat, &event_tms);
 500                                 wc_strftime(&ebuf[0], sizeof(sbuf), timeformat, &event_tme);
 501
 502                                 wc_printf("</a></font></td>"
 503                                         "<td bgcolor='%s'>%s</td><td bgcolor='%s'>%s</td></tr>",
 504                                         daycolor,
 505                                         sbuf,
 506                                         daycolor,
 507                                         ebuf);
 508                                 }
 509
 510                         }
 511
 512
 513                 }
 514         }
 515         DeleteHashPos(&Pos);
 516 }
 517
 518
 519 /*
 520  * view one month. pretty view
 521  */
 522 void calendar_month_view(int year, int month, int day) {
 523         struct tm starting_tm;
 524         struct tm tm;
 525         struct tm today_tm;
 526         time_t thetime;
 527         int i;
 528         time_t previous_month;
 529         time_t next_month;
 530         time_t colheader_time;
 531         time_t today_timet;
 532         struct tm colheader_tm;
 533         char colheader_label[32];
 534         long weekstart = 0;
 535
 536         /*
 537          * Make sure we know which day is today.
 538          */
 539         today_timet = time(NULL);
 540         localtime_r(&today_timet, &today_tm);
 541
 542         /*
 543          * Determine what day to start.  If an impossible value is found, start on Sunday.
 544          */
 545         get_pref_long("weekstart", &weekstart, 17);
 546         if (weekstart > 6) weekstart = 0;
 547
 548         /*
 549          * Now back up to the 1st of the month...
 550          */
 551         memset(&starting_tm, 0, sizeof(struct tm));
 552
 553         starting_tm.tm_year = year - 1900;
 554         starting_tm.tm_mon = month - 1;
 555         starting_tm.tm_mday = day;
 556         thetime = mktime(&starting_tm);
 557
 558         memcpy(&tm, &starting_tm, sizeof(struct tm));
 559         while (tm.tm_mday != 1) {
 560                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 561                 localtime_r(&thetime, &tm);
 562         }
 563
 564         /* Determine previous and next months ... for links */
 565         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 566         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 567
 568         /* Now back up until we're on the user's preferred start day */
 569         localtime_r(&thetime, &tm);
 570         while (tm.tm_wday != weekstart) {
 571                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 572                 localtime_r(&thetime, &tm);
 573         }
 574
 575         /* Outer table (to get the background color) */
 576         wc_printf("<table class=\"calendar\"> \n <tr><td>");
 577
 578         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>\n");
 579
 580         wc_printf("<td align=\"center\">");
 581
 582         localtime_r(&previous_month, &tm);
 583         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 584                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 585         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/back.png\" border=\"0\"></a>\n", _("previous"));
 586
 587         wc_strftime(colheader_label, sizeof colheader_label, "%B", &starting_tm);
 588         wc_printf("&nbsp;&nbsp;"
 589                 "<font size=\"+1\" color=\"#FFFFFF\">"
 590                 "%s %d"
 591                 "</font>"
 592                 "&nbsp;&nbsp;", colheader_label, year);
 593
 594         localtime_r(&next_month, &tm);
 595         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 596                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 597         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/forward.png\" border=\"0\"></A>\n", _("next"));
 598
 599         wc_printf("</td></tr></table>\n");
 600
 601         /* Inner table (the real one) */
 602         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"1\" cellspacing=\"1\" "
 603                 "bgcolor='#204B78' id=\"inner_month\"><tr>");
 604         wc_printf("<th align=\"center\" width=\"2%%\"></th>");
 605         colheader_time = thetime;
 606         for (i=0; i<7; ++i) {
 607                 colheader_time = thetime + (i * 86400) ;
 608                 localtime_r(&colheader_time, &colheader_tm);
 609                 wc_strftime(colheader_label, sizeof colheader_label, "%A", &colheader_tm);
 610                 wc_printf("<th align=\"center\" width=\"14%%\">"
 611                         "<font color=\"#FFFFFF\">%s</font></th>", colheader_label);
 612
 613         }
 614         wc_printf("</tr>\n");
 615
 616
 617         /* Now do 35 or 42 days */
 618         localtime_r(&thetime, &tm);
 619         for (i = 0; i<42; ++i) {
 620
 621                 /* Before displaying the first day of the week, start a new row */
 622                 if ((i % 7) == 0) {
 623                         wc_printf("<tr><td class=\"week_of_year\">");
 624                         wc_strftime(colheader_label, sizeof colheader_label, "%V", &tm);
 625                         wc_printf("%s ", colheader_label);
 626                 }
 627
 628                 wc_printf("<td class=\"cal%s\"><div class=\"day\">",
 629                         ((tm.tm_mon != month-1) ? "out" :
 630                                 (((tm.tm_year == today_tm.tm_year) && (tm.tm_mon == today_tm.tm_mon) && (tm.tm_mday == today_tm.tm_mday)) ? "today" :
 631                                 ((tm.tm_wday==0 || tm.tm_wday==6) ? "weekend" :
 632                                         "day")))
 633                         );
 634                 if ((i==0) || (tm.tm_mday == 1)) {
 635                         wc_strftime(colheader_label, sizeof colheader_label, "%B", &tm);
 636                         wc_printf("%s ", colheader_label);
 637                 }
 638                 wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">"
 639                         "%d</a></div>",
 640                         tm.tm_year + 1900,
 641                         tm.tm_mon + 1,
 642                         tm.tm_mday,
 643                         tm.tm_mday);
 644
 645                 /* put the data here, stupid */
 646                 calendar_month_view_display_events(
 647                         tm.tm_year + 1900,
 648                         tm.tm_mon + 1,
 649                         tm.tm_mday
 650                         );
 651
 652                 wc_printf("</td>");
 653
 654                 /* After displaying the last day of the week, end the row */
 655                 if ((i % 7) == 6) {
 656                         wc_printf("</tr>\n");
 657                 }
 658
 659                 thetime += (time_t)86400;               /* ahead 24 hours */
 660                 localtime_r(&thetime, &tm);
 661
 662                 if ( ((i % 7) == 6) && (tm.tm_mon != month-1) && (tm.tm_mday < 15) ) {
 663                         i = 100;        /* break out of the loop */
 664                 }
 665         }
 666
 667         wc_printf("</table>"                    /* end of inner table */
 668                 "</td></tr></table>\n"          /* end of outer table */
 669         );
 670 }
 671
 672 /*
 673  * view one month. brief view
 674  */
 675 void calendar_brief_month_view(int year, int month, int day) {
 676         struct tm starting_tm;
 677         struct tm tm;
 678         time_t thetime;
 679         int i;
 680         time_t previous_month;
 681         time_t next_month;
 682         char month_label[32];
 683
 684         /* Determine what day to start.
 685          * First, back up to the 1st of the month...
 686          */
 687         memset(&starting_tm, 0, sizeof(struct tm));
 688         starting_tm.tm_year = year - 1900;
 689         starting_tm.tm_mon = month - 1;
 690         starting_tm.tm_mday = day;
 691         thetime = mktime(&starting_tm);
 692
 693         memcpy(&tm, &starting_tm, sizeof(struct tm));
 694         while (tm.tm_mday != 1) {
 695                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 696                 localtime_r(&thetime, &tm);
 697         }
 698
 699         /* Determine previous and next months ... for links */
 700         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 701         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 702
 703         /* Now back up until we're on a Sunday */
 704         localtime_r(&thetime, &tm);
 705         while (tm.tm_wday != 0) {
 706                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 707                 localtime_r(&thetime, &tm);
 708         }
 709
 710         /* Outer table (to get the background color) */
 711         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" "
 712                 "bgcolor=#204B78><tr><td>\n");
 713
 714         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>\n");
 715
 716         wc_printf("<td align=\"center\">");
 717
 718         localtime_r(&previous_month, &tm);
 719         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 720                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 721         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/back.png\" border=\"0\"></a>\n", _("previous"));
 722
 723         wc_strftime(month_label, sizeof month_label, "%B", &tm);
 724         wc_printf("&nbsp;&nbsp;"
 725                 "<font size=\"+1\" color=\"#FFFFFF\">"
 726                 "%s %d"
 727                 "</font>"
 728                 "&nbsp;&nbsp;", month_label, year);
 729
 730         localtime_r(&next_month, &tm);
 731         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 732                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 733         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/forward.png\" border=\"0\"></a>\n", _("next"));
 734
 735         wc_printf("</td></tr></table>\n");
 736
 737         /* Inner table (the real one) */
 738         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"1\" cellspacing=\"1\" "
 739                 "bgcolor=#EEEECC><TR>");
 740         wc_printf("</tr>\n");
 741         wc_printf("<tr><td colspan=\"100%%\">\n");
 742
 743         /* Now do 35 days */
 744         for (i = 0; i < 35; ++i) {
 745                 char weeknumber[255];
 746                 char weekday_name[32];
 747                 char *daycolor;
 748                 localtime_r(&thetime, &tm);
 749
 750
 751                 /* Before displaying Sunday, start a new CELL */
 752                 if ((i % 7) == 0) {
 753                         wc_strftime(&weeknumber[0], sizeof(weeknumber), "%U", &tm);
 754                         wc_printf("<table border='0' bgcolor=\"#EEEECC\" width='100%%'> <tr><th colspan='4'>%s %s</th></tr>"
 755                                 "   <tr><td>%s</td><td width='70%%'>%s</td><td>%s</td><td>%s</td></tr>\n",
 756                                 _("Week"),
 757                                 weeknumber,
 758                                 _("Hours"),
 759                                 _("Subject"),
 760                                 _("Start"),
 761                                 _("End")
 762                                 );
 763                 }
 764
 765                 daycolor=((tm.tm_mon != month-1) ? "DDDDDD" :
 766                         ((tm.tm_wday==0 || tm.tm_wday==6) ? "EEEECC" :
 767                                 "FFFFFF"));
 768
 769                 /* Day Header */
 770                 wc_strftime(weekday_name, sizeof weekday_name, "%A", &tm);
 771                 wc_printf("<tr><td bgcolor='%s' colspan='1' align='left'> %s,%i."
 772                         "</td><td bgcolor='%s' colspan='3'><hr></td></tr>\n",
 773                         daycolor,
 774                         weekday_name,tm.tm_mday,
 775                         daycolor);
 776
 777                 /* put the data of one day  here, stupid */
 778                 calendar_month_view_brief_events(thetime, daycolor);
 779
 780
 781                 /* After displaying Saturday, end the row */
 782                 if ((i % 7) == 6) {
 783                         wc_printf("</td></tr></table>\n");
 784                 }
 785
 786                 thetime += (time_t)86400;               /* ahead 24 hours */
 787         }
 788
 789         wc_printf("</table>"                    /* end of inner table */
 790                 "</td></tr></table>\n"          /* end of outer table */
 791         );
 792 }
 793
 794 /*
 795  * Calendar week view -- not implemented yet, this is a stub function
 796  */
 797 void calendar_week_view(int year, int month, int day) {
 798         wc_printf("<center><i>week view FIXME</i></center><br>\n");
 799 }
 800
 801
 802 /*
 803  * display one day
 804  * Display events for a particular hour of a particular day.
 805  * (Specify hour < 0 to show "all day" events)
 806  *
 807  * dstart and dend indicate which hours our "daytime" begins and end
 808  */
 809 void calendar_day_view_display_events(time_t thetime,
 810         int year,
 811         int month,
 812         int day,
 813         int notime_events,
 814         int dstart,
 815         int dend)
 816 {
 817         long hklen;
 818         const char *HashKey;
 819         void *vCal;
 820         HashPos *Pos;
 821         icalproperty *p = NULL;
 822         icalproperty *q = NULL;
 823         time_t event_tt;
 824         time_t event_tte;
 825         struct tm event_te;
 826         struct tm event_tm;
 827         int show_event = 0;
 828         int all_day_event = 0;
 829         int ongoing_event = 0;
 830         wcsession *WCC = WC;
 831         disp_cal *Cal;
 832         struct icaltimetype t;
 833         struct icaltimetype end_t;
 834         struct icaltimetype today_start_t;
 835         struct icaltimetype today_end_t;
 836         struct icaltimetype today_t;
 837         struct tm starting_tm;
 838         struct tm ending_tm;
 839         int top = 0;
 840         int bottom = 0;
 841         int gap = 1;
 842         int startmin = 0;
 843         int diffmin = 0;
 844         int endmin = 0;
 845
 846         char buf[256];
 847
 848         if (GetCount(WCC->disp_cal_items) == 0) {
 849                 /* nothing to display */
 850                 return;
 851         }
 852
 853         /* Create an imaginary event which spans the current day.  Any events which
 854          * overlap with this one take place at least partially in this day.
 855          */
 856         memset(&starting_tm, 0, sizeof(struct tm));
 857         starting_tm.tm_year = year - 1900;
 858         starting_tm.tm_mon = month - 1;
 859         starting_tm.tm_mday = day;
 860         starting_tm.tm_hour = 0;
 861         starting_tm.tm_min = 0;
 862         today_start_t = icaltime_from_timet_with_zone(mktime(&starting_tm), 0, icaltimezone_get_utc_timezone());
 863         today_start_t.is_utc = 1;
 864
 865         memset(&ending_tm, 0, sizeof(struct tm));
 866         ending_tm.tm_year = year - 1900;
 867         ending_tm.tm_mon = month - 1;
 868         ending_tm.tm_mday = day;
 869         ending_tm.tm_hour = 23;
 870         ending_tm.tm_min = 59;
 871         today_end_t = icaltime_from_timet_with_zone(mktime(&ending_tm), 0, icaltimezone_get_utc_timezone());
 872         today_end_t.is_utc = 1;
 873
 874         /*
 875          * Create another one without caring about the timezone for all day events.
 876          */
 877         today_t = icaltime_null_date();
 878         today_t.year = year;
 879         today_t.month = month;
 880         today_t.day = day;
 881
 882         /* Now loop through our list of events to see which ones occur today.
 883          */
 884         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
 885         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
 886                 Cal = (disp_cal*)vCal;
 887
 888                 all_day_event = 0;
 889                 ongoing_event=0;
 890
 891                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 892                 if (q != NULL) {
 893                         t = icalproperty_get_dtstart(q);
 894                         event_tt = icaltime_as_timet(t);
 895                         localtime_r(&event_tt, &event_te);
 896                 }
 897                 else {
 898                         memset(&t, 0, sizeof t);
 899                 }
 900
 901                 if (t.is_date) all_day_event = 1;
 902
 903                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 904                 if (q != NULL) {
 905                         end_t = icalproperty_get_dtend(q);
 906                 }
 907                 else {
 908                         /* no end given means end = start */
 909                         memcpy(&end_t, &t, sizeof(struct icaltimetype));
 910                 }
 911
 912                 if (all_day_event)
 913                 {
 914                         show_event = ical_ctdl_is_overlap(t, end_t, today_t, icaltime_null_time());
 915                         if (icaltime_compare(t, end_t)) {
 916                                 /*
 917                                  * the end date is non-inclusive so adjust it by one
 918                                  * day because our test is inclusive, note that a day is
 919                                  * not to much because we are talking about all day
 920                                  * events
 921                                  */
 922                                 icaltime_adjust(&end_t, -1, 0, 0, 0);
 923                         }
 924                 }
 925                 else
 926                 {
 927                         show_event = ical_ctdl_is_overlap(t, end_t, today_start_t, today_end_t);
 928                 }
 929
 930                 event_tte = icaltime_as_timet(end_t);
 931                 localtime_r(&event_tte, &event_tm);
 932
 933                 /* If we determined that this event occurs today, then display it.
 934                  */
 935                 p = icalcomponent_get_first_property(Cal->cal,ICAL_SUMMARY_PROPERTY);
 936                 if (p == NULL) {
 937                         p = icalproperty_new_summary(_("Untitled Event"));
 938                         icalcomponent_add_property(Cal->cal, p);
 939                 }
 940
 941                 if ((show_event) && (p != NULL)) {
 942
 943                         if ((event_te.tm_mday != day) || (event_tm.tm_mday != day)) ongoing_event = 1;
 944
 945                         if (all_day_event && notime_events)
 946                         {
 947                                 wc_printf("<li class=\"event_framed%s\"> "
 948                                         "<a href=\"display_edit_event?"
 949                                         "msgnum=%ld?calview=day?year=%d?month=%d?day=%d\" "
 950                                         " class=\"event_title\">"
 951                                         ,
 952                                         (Cal->unread)?"_unread":"_read",
 953                                         Cal->cal_msgnum, year, month, day
 954                                 );
 955                                 escputs((char *) icalproperty_get_comment(p));
 956                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
 957                                 wc_printf("<i>%s</i><br>",      _("All day event"));
 958                                 wc_printf("<i>%s: %s</i><br>",  _("From"), Cal->from);
 959                                 wc_printf("<i>%s</i> ",           _("Summary:"));
 960                                 escputs((char *) icalproperty_get_comment(p));
 961                                 wc_printf("<br>");
 962                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
 963                                 if (q) {
 964                                         wc_printf("<i>%s</i> ", _("Location:"));
 965                                         escputs((char *)icalproperty_get_comment(q));
 966                                         wc_printf("<br>");
 967                                 }
 968                                 if (!icaltime_compare(t, end_t)) { /* one day only */
 969                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_LOCALEDATE);
 970                                         wc_printf("<i>%s</i> %s<br>", _("Date:"), buf);
 971                                 }
 972                                 else {
 973                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_LOCALEDATE);
 974                                         wc_printf("<i>%s</i> %s<br>", _("Starting date:"), buf);
 975                                         webcit_fmt_date(buf, 256, event_tte, DATEFMT_LOCALEDATE);
 976                                         wc_printf("<i>%s</i> %s<br>", _("Ending date:"), buf);
 977                                 }
 978                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
 979                                 if (q) {
 980                                         wc_printf("<i>%s</i> ", _("Notes:"));
 981                                         escputs((char *)icalproperty_get_comment(q));
 982                                         wc_printf("<br>");
 983                                 }
 984                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
 985                                 wc_printf("</a> <span>(");
 986                                 wc_printf(_("All day event"));
 987                                 wc_printf(")</span></li>\n");
 988                         }
 989                         else if (ongoing_event && notime_events)
 990                         {
 991                                 wc_printf("<li class=\"event_framed%s\"> "
 992                                         "<a href=\"display_edit_event?"
 993                                         "msgnum=%ld&calview=day?year=%d?month=%d?day=%d\" "
 994                                         " class=\"event_title\">"
 995                                         ,
 996                                         (Cal->unread)?"_unread":"_read",
 997                                         Cal->cal_msgnum, year, month, day
 998                                 );
 999                                 escputs((char *) icalproperty_get_comment(p));
1000                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
1001                                 wc_printf("<i>%s</i><br>",     _("Ongoing event"));
1002                                 wc_printf("<i>%s: %s</i><br>", _("From"), Cal->from);
1003                                 wc_printf("<i>%s</i> ",          _("Summary:"));
1004                                 escputs((char *) icalproperty_get_comment(p));
1005                                 wc_printf("<br>");
1006                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
1007                                 if (q) {
1008                                         wc_printf("<i>%s</i> ", _("Location:"));
1009                                         escputs((char *)icalproperty_get_comment(q));
1010                                         wc_printf("<br>");
1011                                                                 }
1012                                 webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1013                                 wc_printf("<i>%s</i> %s<br>", _("Starting date/time:"), buf);
1014                                 webcit_fmt_date(buf, 256, event_tte, DATEFMT_BRIEF);
1015                                 wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
1016                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
1017                                 if (q) {
1018                                         wc_printf("<i>%s</i> ", _("Notes:"));
1019                                         escputs((char *)icalproperty_get_comment(q));
1020                                         wc_printf("<br>");
1021                                 }
1022                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
1023                                 wc_printf("</a> <span>(");
1024                                 wc_printf(_("Ongoing event"));
1025                                 wc_printf(")</span></li>\n");
1026                         }
1027                         else if (!all_day_event && !notime_events)
1028                         {
1029                                 gap++;
1030
1031                                 if (event_te.tm_mday != day) event_te.tm_hour = 0;
1032                                 if (event_tm.tm_mday != day) event_tm.tm_hour = 24;
1033
1034                                 /* Calculate the location of the top of the box */
1035                                 if (event_te.tm_hour < dstart) {
1036                                         startmin = diffmin = event_te.tm_min / 6;
1037                                         top = (event_te.tm_hour * EXTRATIMELINE) + startmin;
1038                                 }
1039                                 else if ((event_te.tm_hour >= dstart) && (event_te.tm_hour <= dend)) {
1040                                         startmin = diffmin = (event_te.tm_min / 2);
1041                                         top = (dstart * EXTRATIMELINE) + ((event_te.tm_hour - dstart) * TIMELINE) + startmin;
1042                                 }
1043                                 else if (event_te.tm_hour >dend) {
1044                                         startmin = diffmin = event_te.tm_min / 6;
1045                                         top = (dstart * EXTRATIMELINE) + ((dend - dstart - 1) * TIMELINE) + ((event_tm.tm_hour - dend + 1) * EXTRATIMELINE) + startmin ;
1046                                 }
1047                                 else {
1048                                         /* should never get here */
1049                                 }
1050
1051                                 /* Calculate the location of the bottom of the box */
1052                                 if (event_tm.tm_hour < dstart) {
1053                                         endmin = diffmin = event_tm.tm_min / 6;
1054                                         bottom = (event_tm.tm_hour * EXTRATIMELINE) + endmin;
1055                                 }
1056                                 else if ((event_tm.tm_hour >= dstart) && (event_tm.tm_hour <= dend)) {
1057                                         endmin = diffmin = (event_tm.tm_min / 2);
1058                                         bottom = (dstart * EXTRATIMELINE) + ((event_tm.tm_hour - dstart) * TIMELINE) + endmin ;
1059                                 }
1060                                 else if (event_tm.tm_hour >dend) {
1061                                         endmin = diffmin = event_tm.tm_min / 6;
1062                                         bottom = (dstart * EXTRATIMELINE) + ((dend - dstart + 1) * TIMELINE) + ((event_tm.tm_hour - dend - 1) * EXTRATIMELINE) + endmin;
1063                                 }
1064                                 else {
1065                                         /* should never get here */
1066                                 }
1067
1068                                 wc_printf("<dd  class=\"event_framed%s\" "
1069                                         "style=\"position: absolute; "
1070                                         "top:%dpx; left:%dpx; "
1071                                         "height:%dpx; \" >",
1072                                         (Cal->unread)?"_unread":"_read",
1073                                         top, (gap * 40), (bottom-top)
1074                                         );
1075                                 wc_printf("<a href=\"display_edit_event?"
1076                                         "msgnum=%ld?calview=day?year=%d?month=%d?day=%d?hour=%d\" "
1077                                         "class=\"event_title\">"
1078                                         ,
1079                                         Cal->cal_msgnum, year, month, day, t.hour
1080                                 );
1081                                 escputs((char *) icalproperty_get_comment(p));
1082                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
1083                                 wc_printf("<i>%s: %s</i><br>", _("From"), Cal->from);
1084                                 wc_printf("<i>%s</i> ",          _("Summary:"));
1085                                 escputs((char *) icalproperty_get_comment(p));
1086                                 wc_printf("<br>");
1087                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
1088                                 if (q) {
1089                                         wc_printf("<i>%s</i> ", _("Location:"));
1090                                         escputs((char *)icalproperty_get_comment(q));
1091                                         wc_printf("<br>");
1092                                                                 }
1093                                 if (!icaltime_compare(t, end_t)) { /* one day only */
1094                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1095                                         wc_printf("<i>%s</i> %s<br>", _("Date/time:"), buf);
1096                                 }
1097                                 else {
1098                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1099                                         wc_printf("<i>%s</i> %s<br>", _("Starting date/time:"), buf);
1100                                         webcit_fmt_date(buf, 256, event_tte, DATEFMT_BRIEF);
1101                                         wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
1102                                 }
1103                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
1104                                 if (q) {
1105                                         wc_printf("<i>%s</i> ", _("Notes:"));
1106                                         escputs((char *)icalproperty_get_comment(q));
1107                                         wc_printf("<br>");
1108                                 }
1109                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
1110                                 wc_printf("</a></dd>\n");
1111                         }
1112                 }
1113         }
1114         DeleteHashPos(&Pos);
1115 }
1116
1117 /*
1118  * view one day
1119  */
1120 void calendar_day_view(int year, int month, int day) {
1121         int hour;
1122         struct icaltimetype today, yesterday, tomorrow;
1123         long daystart;
1124         long dayend;
1125         struct tm d_tm;
1126         char d_str[160];
1127         int time_format;
1128         time_t today_t;
1129         int timeline = TIMELINE;
1130         int extratimeline = EXTRATIMELINE;
1131         int gap = 0;
1132         int hourlabel;
1133         int extrahourlabel;
1134
1135         time_format = get_time_format_cached ();
1136         get_pref_long("daystart", &daystart, 8);
1137         get_pref_long("dayend", &dayend, 17);
1138
1139         /* when loading daystart/dayend, replace missing, corrupt, or impossible values with defaults */
1140         if ((daystart < 0) || (dayend < 2) || (daystart >= 23) || (dayend > 23) || (dayend <= daystart)) {
1141                 daystart = 9;
1142                 dayend = 17;
1143         }
1144
1145         /* Today's date */
1146         memset(&d_tm, 0, sizeof d_tm);
1147         d_tm.tm_year = year - 1900;
1148         d_tm.tm_mon = month - 1;
1149         d_tm.tm_mday = day;
1150         today_t = mktime(&d_tm);
1151
1152         /* Figure out the dates for "yesterday" and "tomorrow" links */
1153
1154         memset(&today, 0, sizeof(struct icaltimetype));
1155         today.year = year;
1156         today.month = month;
1157         today.day = day;
1158         today.is_date = 1;
1159
1160         memcpy(&yesterday, &today, sizeof(struct icaltimetype));
1161         --yesterday.day;
1162         yesterday = icaltime_normalize(yesterday);
1163
1164         memcpy(&tomorrow, &today, sizeof(struct icaltimetype));
1165         ++tomorrow.day;
1166         tomorrow = icaltime_normalize(tomorrow);
1167
1168         /* Inner table (the real one) */
1169         wc_printf("<table class=\"calendar\" id=\"inner_day\"><tr> \n");
1170
1171         /* Innermost cell (contains hours etc.) */
1172         wc_printf("<td class=\"events_of_the_day\" >");
1173         wc_printf("<dl class=\"events\" >");
1174
1175         /* Now the middle of the day... */
1176
1177         extrahourlabel = extratimeline - 2;
1178         hourlabel = extrahourlabel * 150 / 100;
1179         if (hourlabel > (timeline - 2)) hourlabel = timeline - 2;
1180
1181         for (hour = 0; hour < daystart; ++hour) {       /* could do HEIGHT=xx */
1182                 wc_printf("<dt class=\"extrahour\">"
1183                         "<a href=\"display_edit_event?msgnum=0"
1184                         "?calview=day?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1185 /* TODO: what have these been used for?
1186                         (hour * extratimeline ),
1187                         extratimeline,
1188                         extrahourlabel,
1189 */
1190                         year, month, day, hour
1191                         );
1192
1193                 if (time_format == WC_TIMEFORMAT_24) {
1194                         wc_printf("%2d:00</a> ", hour);
1195                 }
1196                 else {
1197                         wc_printf("%d:00%s</a> ",
1198                                 ((hour == 0) ? 12 : (hour <= 12 ? hour : hour-12)),
1199                                 (hour < 12 ? "am" : "pm")
1200                                 );
1201                 }
1202
1203                 wc_printf("</dt>");
1204         }
1205
1206         gap = daystart * extratimeline;
1207
1208         for (hour = daystart; hour <= dayend; ++hour) {       /* could do HEIGHT=xx */
1209                 wc_printf("<dt class=\"hour\">"
1210                         "<a href=\"display_edit_event?msgnum=0?calview=day"
1211                         "?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1212 /*TODO: what have these been used for?
1213                         gap + ((hour - daystart) * timeline ),
1214                         timeline,
1215                         hourlabel,
1216 */
1217                         year, month, day, hour
1218                         );
1219
1220                 if (time_format == WC_TIMEFORMAT_24) {
1221                         wc_printf("%2d:00</a> ", hour);
1222                 }
1223                 else {
1224                         wc_printf("%d:00%s</a> ",
1225                                 (hour <= 12 ? hour : hour-12),
1226                                 (hour < 12 ? "am" : "pm")
1227                                                 );
1228                 }
1229
1230                 wc_printf("</dt>");
1231         }
1232
1233         gap = gap + ((dayend - daystart + 1) * timeline);
1234
1235         for (hour = (dayend + 1); hour < 24; ++hour) {       /* could do HEIGHT=xx */
1236                 wc_printf("<dt class=\"extrahour\">"
1237                         "<a href=\"display_edit_event?msgnum=0?calview=day"
1238                         "?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1239 /*TODO: what have these been used for?
1240                         gap + ((hour - dayend - 1) * extratimeline ),
1241                         extratimeline,
1242                         extrahourlabel,
1243 */
1244                         year, month, day, hour
1245                 );
1246
1247                 if (time_format == WC_TIMEFORMAT_24) {
1248                         wc_printf("%2d:00</a> ", hour);
1249                 }
1250                 else {
1251                         wc_printf("%d:00%s</a> ",
1252                                 (hour <= 12 ? hour : hour-12),
1253                                 (hour < 12 ? "am" : "pm")
1254                         );
1255                 }
1256
1257                 wc_printf("</dt>");
1258         }
1259
1260         /* Display events with start and end times on this day */
1261         calendar_day_view_display_events(today_t, year, month, day, 0, daystart, dayend);
1262
1263         wc_printf("</dl>");
1264         wc_printf("</td>");                     /* end of innermost table */
1265
1266         /* Display extra events (start/end times not present or not today) in the middle column */
1267         wc_printf("<td class=\"extra_events\">");
1268
1269         wc_printf("<ul>");
1270
1271         /* Display all-day events */
1272         calendar_day_view_display_events(today_t, year, month, day, 1, daystart, dayend);
1273
1274         wc_printf("</ul>");
1275
1276         wc_printf("</td>");     /* end extra on the middle */
1277
1278         wc_printf("<td width='20%%' align=\"center\" valign=top>");     /* begin stuff-on-the-right */
1279
1280         /* Begin todays-date-with-left-and-right-arrows */
1281         wc_printf("<table border=\"0\" width=\"100%%\" "
1282                 "cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#FFFFFF\">\n");
1283         wc_printf("<tr>");
1284
1285         /* Left arrow */
1286         wc_printf("<td align=\"center\">");
1287         wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">",
1288                 yesterday.year, yesterday.month, yesterday.day);
1289         wc_printf("<img alt=\"previous\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/back.png\" border=\"0\"></a>");
1290         wc_printf("</td>");
1291
1292         wc_strftime(d_str, sizeof d_str,
1293                 "<td align=\"center\">"
1294                 "<font size='+2'>%A</font><br>"
1295                 "<font size='+2'>%B</font><br>"
1296                 "<font size='+3'>%d</font><br>"
1297                 "<font size='+2'>%Y</font><br>"
1298                 "</td>",
1299                 &d_tm
1300                 );
1301         wc_printf("%s", d_str);
1302
1303         /* Right arrow */
1304         wc_printf("<td align=\"center\">");
1305         wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">",
1306                 tomorrow.year, tomorrow.month, tomorrow.day);
1307         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/webcit_icons/essen/32x32/forward.png\""
1308                 " border=\"0\"></a>\n", _("next"));
1309         wc_printf("</td>");
1310
1311         wc_printf("</tr></table>\n");
1312         /* End todays-date-with-left-and-right-arrows */
1313
1314         /* Embed a mini month calendar in this space */
1315         wc_printf("<br>\n");
1316         embeddable_mini_calendar(year, month);
1317
1318         wc_printf("</td></tr>");                        /* end stuff-on-the-right */
1319         wc_printf("</table>\n");                        /* end of inner table */
1320 }
1321
1322
1323 /*
1324  * Display today's events.  Returns the number of items displayed.
1325  */
1326 int calendar_summary_view(void) {
1327         long hklen;
1328         const char *HashKey;
1329         void *vCal;
1330         HashPos *Pos;
1331         disp_cal *Cal;
1332         icalproperty *p;
1333         struct icaltimetype t;
1334         time_t event_tt;
1335         struct tm event_tm;
1336         struct tm today_tm;
1337         time_t now;
1338         int all_day_event = 0;
1339         char timestring[SIZ];
1340         wcsession *WCC = WC;
1341         int num_displayed = 0;
1342
1343         if (GetCount(WC->disp_cal_items) == 0) {
1344                 return(0);
1345         }
1346
1347         now = time(NULL);
1348         localtime_r(&now, &today_tm);
1349
1350         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
1351         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
1352                 Cal = (disp_cal*)vCal;
1353                 p = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
1354                 if (p != NULL) {
1355                         t = icalproperty_get_dtstart(p);
1356                         event_tt = icaltime_as_timet(t);
1357                         if (t.is_date) {
1358                                 all_day_event = 1;
1359                         }
1360                         else {
1361                                 all_day_event = 0;
1362                         }
1363                         fmt_time(timestring, SIZ, event_tt);
1364
1365                         if (all_day_event) {
1366                                 gmtime_r(&event_tt, &event_tm);
1367                         }
1368                         else {
1369                                 localtime_r(&event_tt, &event_tm);
1370                         }
1371
1372                         if ( (event_tm.tm_year == today_tm.tm_year)
1373                                 && (event_tm.tm_mon == today_tm.tm_mon)
1374                                 && (event_tm.tm_mday == today_tm.tm_mday)
1375                         ) {
1376
1377                                 p = icalcomponent_get_first_property(Cal->cal, ICAL_SUMMARY_PROPERTY);
1378                                 if (p == NULL) {
1379                                         p = icalproperty_new_summary(_("Untitled Task"));
1380                                         icalcomponent_add_property(Cal->cal, p);
1381                                 }
1382                                 if (p != NULL)
1383                                 {
1384                                         if (WCC->CurRoom.view == VIEW_TASKS) {
1385                                                 wc_printf("<a href=\"display_edit_task"
1386                                                         "?msgnum=%ld"
1387                                                         "?return_to_summary=1"
1388                                                         "?go=",
1389                                                         Cal->cal_msgnum
1390                                                 );
1391                                                 escputs(ChrPtr(WCC->CurRoom.name));
1392                                                 wc_printf("\">");
1393                                         }
1394                                         else {
1395                                                 wc_printf("<a href=\"display_edit_event"
1396                                                         "?msgnum=%ld"
1397                                                         "?calview=summary"
1398                                                         "?year=%d"
1399                                                         "?month=%d"
1400                                                         "?day=%d"
1401                                                         "?go=",
1402                                                         Cal->cal_msgnum,
1403                                                         today_tm.tm_year + 1900,
1404                                                         today_tm.tm_mon + 1,
1405                                                         today_tm.tm_mday
1406                                                 );
1407                                                 escputs(ChrPtr(WCC->CurRoom.name));
1408                                                 wc_printf("\">");
1409                                         }
1410                                         escputs((char *) icalproperty_get_comment(p));
1411                                         if (!all_day_event) {
1412                                                 wc_printf(" (%s)", timestring);
1413                                         }
1414                                         wc_printf("</a><br>\n");
1415                                         ++num_displayed;
1416                                 }
1417                         }
1418                 }
1419         }
1420         DeleteHashPos(&Pos);
1421         DeleteHash(&WC->disp_cal_items);
1422         return(num_displayed);
1423 }
1424
1425 /*
1426  * Parse the URL variables in order to determine the scope and display of a calendar view
1427  */
1428 int calendar_GetParamsGetServerCall(SharedMessageStatus *Stat,
1429                                     void **ViewSpecific,
1430                                     long oper,
1431                                     char *cmd,
1432                                     long len,
1433                                     char *filter,
1434                                     long flen)
1435 {
1436         wcsession *WCC = WC;
1437         calview *c;
1438         time_t now;
1439         struct tm tm;
1440         char cv[32];
1441
1442         int span = 3888000;
1443
1444         c = (calview*) malloc(sizeof(calview));
1445         memset(c, 0, sizeof(calview));
1446         *ViewSpecific = (void*)c;
1447
1448         Stat->load_seen = 1;
1449         strcpy(cmd, "MSGS ALL");
1450         Stat->maxmsgs = 32767;
1451
1452         /* In case no date was specified, go with today */
1453         now = time(NULL);
1454         localtime_r(&now, &tm);
1455         c->year = tm.tm_year + 1900;
1456         c->month = tm.tm_mon + 1;
1457         c->day = tm.tm_mday;
1458
1459         /* Now see if a date was specified */
1460         if (havebstr("year")) c->year = ibstr("year");
1461         if (havebstr("month")) c->month = ibstr("month");
1462         if (havebstr("day")) c->day = ibstr("day");
1463
1464         /* How would you like that cooked? */
1465         if (havebstr("calview")) {
1466                 strcpy(cv, bstr("calview"));
1467         }
1468         else {
1469                 strcpy(cv, "month");
1470         }
1471
1472         /* Display the selected view */
1473         if (!strcasecmp(cv, "day")) {
1474                 c->view = calview_day;
1475         }
1476         else if (!strcasecmp(cv, "week")) {
1477                 c->view = calview_week;
1478         }
1479         else if (!strcasecmp(cv, "summary")) {  /* shouldn't ever happen, but just in case */
1480                 c->view = calview_day;
1481         }
1482         else {
1483                 if (WCC->CurRoom.view == VIEW_CALBRIEF) {
1484                         c->view = calview_brief;
1485                 }
1486                 else {
1487                         c->view = calview_month;
1488                 }
1489         }
1490
1491         /* Now try and set the lower and upper bounds so that we don't
1492          * burn too many cpu cycles parsing data way in the past or future
1493          */
1494
1495         tm.tm_year = c->year - 1900;
1496         tm.tm_mon = c->month - 1;
1497         tm.tm_mday = c->day;
1498         now = mktime(&tm);
1499
1500         if (c->view == calview_month)   span = 3888000;
1501         if (c->view == calview_brief)   span = 3888000;
1502         if (c->view == calview_week)    span = 604800;
1503         if (c->view == calview_day)     span = 86400;
1504         if (c->view == calview_summary) span = 86400;
1505
1506         c->lower_bound = now - span;
1507         c->upper_bound = now + span;
1508         return 200;
1509 }
1510
1511
1512
1513 /*
1514  * Render a calendar view from data previously loaded into memory
1515  */
1516 int calendar_RenderView_or_Tail(SharedMessageStatus *Stat,
1517                                 void **ViewSpecific,
1518                                 long oper)
1519 {
1520         wcsession *WCC = WC;
1521         calview *c = (calview*) *ViewSpecific;
1522
1523         if (c->view == calview_day) {
1524                 calendar_day_view(c->year, c->month, c->day);
1525         }
1526         else if (c->view == calview_week) {
1527                 calendar_week_view(c->year, c->month, c->day);
1528         }
1529         else {
1530                 if (WCC->CurRoom.view == VIEW_CALBRIEF) {
1531                         calendar_brief_month_view(c->year, c->month, c->day);
1532                 }
1533                 else {
1534                         calendar_month_view(c->year, c->month, c->day);
1535                 }
1536         }
1537
1538         /* Free the in-memory list of calendar items */
1539         DeleteHash(&WC->disp_cal_items);
1540         return 0;
1541 }
1542
1543 void
1544 InitModule_CALENDAR_VIEW
1545 (void)
1546 {
1547         WebcitAddUrlHandler(HKEY("mini_calendar"), "", 0, ajax_mini_calendar, AJAX);
1548 }