webcit/calendar_view.c

   1 /*
   2  * Handles the HTML display of calendar items.
   3  *
   4  * Copyright (c) 1996-2010 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 /><br /><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                         p = icalcomponent_get_first_property(Cal->cal, ICAL_SUMMARY_PROPERTY);
 263                         if (p == NULL) {
 264                                 p = icalproperty_new_summary(_("Untitled Event"));
 265                                 icalcomponent_add_property(Cal->cal, p);
 266                         }
 267                         if (p != NULL) {
 268
 269                                 if (all_day_event) {
 270                                         wc_printf("<table border=\"0\" cellpadding=\"2\"><TR>"
 271                                                 "<td bgcolor=\"#CCCCDD\">"
 272                                                 );
 273                                 }
 274
 275
 276                                 wc_printf("<font size=\"-1\">"
 277                                         "<a class=\"event%s\" href=\"display_edit_event?"
 278                                         "msgnum=%ld?calview=month?year=%d?month=%d?day=%d\">"
 279                                         ,
 280                                         (Cal->unread)?"_unread":"_read",
 281                                         Cal->cal_msgnum,
 282                                         year, month, day
 283                                 );
 284
 285                                 escputs((char *) icalproperty_get_comment(p));
 286
 287                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
 288
 289                                 wc_printf("<i>%s: %s</i><br />", _("From"), Cal->from);
 290                                 wc_printf("<i>%s</i> ",          _("Summary:"));
 291                                 escputs((char *)icalproperty_get_comment(p));
 292                                 wc_printf("<br />");
 293
 294                                 q = icalcomponent_get_first_property(
 295                                         Cal->cal,
 296                                         ICAL_LOCATION_PROPERTY);
 297                                 if (q) {
 298                                         wc_printf("<i>%s</i> ", _("Location:"));
 299                                         escputs((char *)icalproperty_get_comment(q));
 300                                         wc_printf("<br />");
 301                                 }
 302
 303                                 /*
 304                                  * Only show start/end times if we're actually looking at the VEVENT
 305                                  * component.  Otherwise it shows bogus dates for e.g. timezones
 306                                  */
 307                                 if (icalcomponent_isa(Cal->cal) == ICAL_VEVENT_COMPONENT) {
 308
 309                                         q = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 310                                         if (q != NULL) {
 311                                                 int no_end = 0;
 312
 313                                                 t = icalproperty_get_dtstart(q);
 314                                                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 315                                                 if (q != NULL) {
 316                                                         end_t = icalproperty_get_dtend(q);
 317                                                 }
 318                                                 else {
 319                                                         /*
 320                                                          * events with starting date/time equal
 321                                                          * ending date/time might get only
 322                                                          * DTSTART but no DTEND
 323                                                          */
 324                                                         no_end = 1;
 325                                                 }
 326
 327                                                 if (t.is_date) {
 328                                                         /* all day event */
 329                                                         struct tm d_tm;
 330
 331                                                         if (!no_end) {
 332                                                                 /* end given, have to adjust it */
 333                                                                 icaltime_adjust(&end_t, -1, 0, 0, 0);
 334                                                         }
 335                                                         memset(&d_tm, 0, sizeof d_tm);
 336                                                         d_tm.tm_year = t.year - 1900;
 337                                                         d_tm.tm_mon = t.month - 1;
 338                                                         d_tm.tm_mday = t.day;
 339                                                         wc_strftime(buf, sizeof buf, "%x", &d_tm);
 340
 341                                                         if (no_end || !icaltime_compare(t, end_t)) {
 342                                                                 wc_printf("<i>%s</i> %s<br>",
 343                                                                         _("Date:"), buf);
 344                                                         }
 345                                                         else {
 346                                                                 wc_printf("<i>%s</i> %s<br>",
 347                                                                         _("Starting date:"), buf);
 348                                                                 d_tm.tm_year = end_t.year - 1900;
 349                                                                 d_tm.tm_mon = end_t.month - 1;
 350                                                                 d_tm.tm_mday = end_t.day;
 351                                                                 wc_strftime(buf, sizeof buf, "%x", &d_tm);
 352                                                                 wc_printf("<i>%s</i> %s<br>",
 353                                                                         _("Ending date:"), buf);
 354                                                         }
 355                                                 }
 356                                                 else {
 357                                                         tt = icaltime_as_timet(t);
 358                                                         webcit_fmt_date(buf, 256, tt, DATEFMT_BRIEF);
 359                                                         if (no_end || !icaltime_compare(t, end_t)) {
 360                                                                 wc_printf("<i>%s</i> %s<br>",
 361                                                                         _("Date/time:"), buf);
 362                                                         }
 363                                                         else {
 364                                                                 wc_printf("<i>%s</i> %s<br>",
 365                                                                         _("Starting date/time:"), buf);
 366                                                                 tt = icaltime_as_timet(end_t);
 367                                                                 webcit_fmt_date(buf, 256, tt, DATEFMT_BRIEF);
 368                                                                 wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
 369                                                         }
 370
 371                                                 }
 372                                         }
 373
 374                                 }
 375
 376                                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DESCRIPTION_PROPERTY);
 377                                 if (q) {
 378                                         wc_printf("<i>%s</i> ", _("Notes:"));
 379                                         escputs((char *)icalproperty_get_comment(q));
 380                                         wc_printf("<br />");
 381                                 }
 382
 383                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
 384                                 wc_printf("</a></font><br />\n");
 385
 386                                 if (all_day_event) {
 387                                         wc_printf("</td></tr></table>");
 388                                 }
 389
 390                         }
 391
 392                 }
 393
 394
 395         }
 396         DeleteHashPos(&Pos);
 397 }
 398
 399
 400 /*
 401  * Display one day of a whole month view of a calendar
 402  */
 403 void calendar_month_view_brief_events(time_t thetime, const char *daycolor) {
 404         long hklen;
 405         const char *HashKey;
 406         void *vCal;
 407         HashPos *Pos;
 408         time_t event_tt;
 409         time_t event_tts;
 410         time_t event_tte;
 411         wcsession *WCC = WC;
 412         struct tm event_tms;
 413         struct tm event_tme;
 414         struct tm today_tm;
 415         icalproperty *p;
 416         icalproperty *e;
 417         struct icaltimetype t;
 418         disp_cal *Cal;
 419         int month, day, year;
 420         int all_day_event = 0;
 421         char *timeformat;
 422         int time_format;
 423
 424         time_format = get_time_format_cached ();
 425
 426         if (time_format == WC_TIMEFORMAT_24) timeformat="%k:%M";
 427         else timeformat="%I:%M %p";
 428
 429         localtime_r(&thetime, &today_tm);
 430         month = today_tm.tm_mon + 1;
 431         day = today_tm.tm_mday;
 432         year = today_tm.tm_year + 1900;
 433
 434         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
 435         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
 436                 Cal = (disp_cal*)vCal;
 437                 p = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 438                 if (p != NULL) {
 439                         t = icalproperty_get_dtstart(p);
 440                         event_tt = icaltime_as_timet(t);
 441                         event_tts=event_tt;
 442                         if (t.is_date) all_day_event = 1;
 443                         else all_day_event = 0;
 444
 445                         if (all_day_event) {
 446                                 gmtime_r(&event_tts, &event_tms);
 447                         }
 448                         else {
 449                                 localtime_r(&event_tts, &event_tms);
 450                         }
 451                         /* \todo epoch &! daymask */
 452                         if ((event_tms.tm_year == today_tm.tm_year)
 453                                 && (event_tms.tm_mon == today_tm.tm_mon)
 454                         && (event_tms.tm_mday == today_tm.tm_mday)) {
 455
 456
 457                         char sbuf[255];
 458                         char ebuf[255];
 459
 460                         p = icalcomponent_get_first_property(
 461                                 Cal->cal,
 462                                 ICAL_SUMMARY_PROPERTY);
 463                         if (p == NULL) {
 464                                 p = icalproperty_new_summary(_("Untitled Event"));
 465                                 icalcomponent_add_property(Cal->cal, p);
 466                         }
 467                         e = icalcomponent_get_first_property(
 468                                 Cal->cal,
 469                                 ICAL_DTEND_PROPERTY);
 470                         if ((p != NULL) && (e != NULL)) {
 471                                 time_t difftime;
 472                                 int hours, minutes;
 473                                 t = icalproperty_get_dtend(e);
 474                                 event_tte = icaltime_as_timet(t);
 475                                 localtime_r(&event_tte, &event_tme);
 476                                 difftime=(event_tte-event_tts)/60;
 477                                 hours=(int)(difftime / 60);
 478                                 minutes=difftime % 60;
 479                                 wc_printf("<tr><td bgcolor='%s'>%i:%2i</td><td bgcolor='%s'>"
 480                                         "<font size=\"-1\">"
 481                                         "<a class=\"event%s\" href=\"display_edit_event?msgnum=%ld?calview=calbrief?year=%s?month=%s?day=%s\">",
 482                                         daycolor,
 483                                         hours, minutes,
 484                                         (Cal->unread)?"_unread":"_read",
 485                                         daycolor,
 486                                         Cal->cal_msgnum,
 487                                         bstr("year"),
 488                                         bstr("month"),
 489                                         bstr("day")
 490                                         );
 491
 492                                 escputs((char *)
 493                                         icalproperty_get_comment(p));
 494                                 /* \todo: allso ammitime format */
 495                                 wc_strftime(&sbuf[0], sizeof(sbuf), timeformat, &event_tms);
 496                                 wc_strftime(&ebuf[0], sizeof(sbuf), timeformat, &event_tme);
 497
 498                                 wc_printf("</a></font></td>"
 499                                         "<td bgcolor='%s'>%s</td><td bgcolor='%s'>%s</td></tr>",
 500                                         daycolor,
 501                                         sbuf,
 502                                         daycolor,
 503                                         ebuf);
 504                                 }
 505
 506                         }
 507
 508
 509                 }
 510         }
 511         DeleteHashPos(&Pos);
 512 }
 513
 514
 515 /*
 516  * view one month. pretty view
 517  */
 518 void calendar_month_view(int year, int month, int day) {
 519         struct tm starting_tm;
 520         struct tm tm;
 521         struct tm today_tm;
 522         time_t thetime;
 523         int i;
 524         time_t previous_month;
 525         time_t next_month;
 526         time_t colheader_time;
 527         time_t today_timet;
 528         struct tm colheader_tm;
 529         char colheader_label[32];
 530         long weekstart = 0;
 531
 532         /*
 533          * Make sure we know which day is today.
 534          */
 535         today_timet = time(NULL);
 536         localtime_r(&today_timet, &today_tm);
 537
 538         /*
 539          * Determine what day to start.  If an impossible value is found, start on Sunday.
 540          */
 541         get_pref_long("weekstart", &weekstart, 17);
 542         if (weekstart > 6) weekstart = 0;
 543
 544         /*
 545          * Now back up to the 1st of the month...
 546          */
 547         memset(&starting_tm, 0, sizeof(struct tm));
 548
 549         starting_tm.tm_year = year - 1900;
 550         starting_tm.tm_mon = month - 1;
 551         starting_tm.tm_mday = day;
 552         thetime = mktime(&starting_tm);
 553
 554         memcpy(&tm, &starting_tm, sizeof(struct tm));
 555         while (tm.tm_mday != 1) {
 556                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 557                 localtime_r(&thetime, &tm);
 558         }
 559
 560         /* Determine previous and next months ... for links */
 561         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 562         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 563
 564         /* Now back up until we're on the user's preferred start day */
 565         localtime_r(&thetime, &tm);
 566         while (tm.tm_wday != weekstart) {
 567                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 568                 localtime_r(&thetime, &tm);
 569         }
 570
 571         /* Outer table (to get the background color) */
 572         wc_printf("<table class=\"calendar\"> \n <tr><td>");
 573
 574         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>\n");
 575
 576         wc_printf("<td align=\"center\">");
 577
 578         localtime_r(&previous_month, &tm);
 579         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 580                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 581         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/prevdate_32x.gif\" border=\"0\"></a>\n", _("previous"));
 582
 583         wc_strftime(colheader_label, sizeof colheader_label, "%B", &starting_tm);
 584         wc_printf("&nbsp;&nbsp;"
 585                 "<font size=\"+1\" color=\"#FFFFFF\">"
 586                 "%s %d"
 587                 "</font>"
 588                 "&nbsp;&nbsp;", colheader_label, year);
 589
 590         localtime_r(&next_month, &tm);
 591         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 592                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 593         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/nextdate_32x.gif\" border=\"0\"></A>\n", _("next"));
 594
 595         wc_printf("</td></tr></table>\n");
 596
 597         /* Inner table (the real one) */
 598         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"1\" cellspacing=\"1\" "
 599                 "bgcolor='#204B78' id=\"inner_month\"><tr>");
 600         wc_printf("<th align=\"center\" width=\"2%%\"></th>");
 601         colheader_time = thetime;
 602         for (i=0; i<7; ++i) {
 603                 colheader_time = thetime + (i * 86400) ;
 604                 localtime_r(&colheader_time, &colheader_tm);
 605                 wc_strftime(colheader_label, sizeof colheader_label, "%A", &colheader_tm);
 606                 wc_printf("<th align=\"center\" width=\"14%%\">"
 607                         "<font color=\"#FFFFFF\">%s</font></th>", colheader_label);
 608
 609         }
 610         wc_printf("</tr>\n");
 611
 612
 613         /* Now do 35 or 42 days */
 614         localtime_r(&thetime, &tm);
 615         for (i = 0; i<42; ++i) {
 616
 617                 /* Before displaying the first day of the week, start a new row */
 618                 if ((i % 7) == 0) {
 619                         wc_printf("<tr><td class=\"week_of_year\">");
 620                         wc_strftime(colheader_label, sizeof colheader_label, "%V", &tm);
 621                         wc_printf("%s ", colheader_label);
 622                 }
 623
 624                 wc_printf("<td class=\"cal%s\"><div class=\"day\">",
 625                         ((tm.tm_mon != month-1) ? "out" :
 626                                 (((tm.tm_year == today_tm.tm_year) && (tm.tm_mon == today_tm.tm_mon) && (tm.tm_mday == today_tm.tm_mday)) ? "today" :
 627                                 ((tm.tm_wday==0 || tm.tm_wday==6) ? "weekend" :
 628                                         "day")))
 629                         );
 630                 if ((i==0) || (tm.tm_mday == 1)) {
 631                         wc_strftime(colheader_label, sizeof colheader_label, "%B", &tm);
 632                         wc_printf("%s ", colheader_label);
 633                 }
 634                 wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">"
 635                         "%d</a></div>",
 636                         tm.tm_year + 1900,
 637                         tm.tm_mon + 1,
 638                         tm.tm_mday,
 639                         tm.tm_mday);
 640
 641                 /* put the data here, stupid */
 642                 calendar_month_view_display_events(
 643                         tm.tm_year + 1900,
 644                         tm.tm_mon + 1,
 645                         tm.tm_mday
 646                         );
 647
 648                 wc_printf("</td>");
 649
 650                 /* After displaying the last day of the week, end the row */
 651                 if ((i % 7) == 6) {
 652                         wc_printf("</tr>\n");
 653                 }
 654
 655                 thetime += (time_t)86400;               /* ahead 24 hours */
 656                 localtime_r(&thetime, &tm);
 657
 658                 if ( ((i % 7) == 6) && (tm.tm_mon != month-1) && (tm.tm_mday < 15) ) {
 659                         i = 100;        /* break out of the loop */
 660                 }
 661         }
 662
 663         wc_printf("</table>"                    /* end of inner table */
 664                 "</td></tr></table>\n"          /* end of outer table */
 665         );
 666 }
 667
 668 /*
 669  * view one month. brief view
 670  */
 671 void calendar_brief_month_view(int year, int month, int day) {
 672         struct tm starting_tm;
 673         struct tm tm;
 674         time_t thetime;
 675         int i;
 676         time_t previous_month;
 677         time_t next_month;
 678         char month_label[32];
 679
 680         /* Determine what day to start.
 681          * First, back up to the 1st of the month...
 682          */
 683         memset(&starting_tm, 0, sizeof(struct tm));
 684         starting_tm.tm_year = year - 1900;
 685         starting_tm.tm_mon = month - 1;
 686         starting_tm.tm_mday = day;
 687         thetime = mktime(&starting_tm);
 688
 689         memcpy(&tm, &starting_tm, sizeof(struct tm));
 690         while (tm.tm_mday != 1) {
 691                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 692                 localtime_r(&thetime, &tm);
 693         }
 694
 695         /* Determine previous and next months ... for links */
 696         previous_month = thetime - (time_t)864000L;     /* back 10 days */
 697         next_month = thetime + (time_t)(31L * 86400L);  /* ahead 31 days */
 698
 699         /* Now back up until we're on a Sunday */
 700         localtime_r(&thetime, &tm);
 701         while (tm.tm_wday != 0) {
 702                 thetime = thetime - (time_t)86400;      /* go back 24 hours */
 703                 localtime_r(&thetime, &tm);
 704         }
 705
 706         /* Outer table (to get the background color) */
 707         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\" "
 708                 "bgcolor=#204B78><tr><td>\n");
 709
 710         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"0\" cellspacing=\"0\"><tr>\n");
 711
 712         wc_printf("<td align=\"center\">");
 713
 714         localtime_r(&previous_month, &tm);
 715         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 716                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 717         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/prevdate_32x.gif\" border=\"0\"></a>\n", _("previous"));
 718
 719         wc_strftime(month_label, sizeof month_label, "%B", &tm);
 720         wc_printf("&nbsp;&nbsp;"
 721                 "<font size=\"+1\" color=\"#FFFFFF\">"
 722                 "%s %d"
 723                 "</font>"
 724                 "&nbsp;&nbsp;", month_label, year);
 725
 726         localtime_r(&next_month, &tm);
 727         wc_printf("<a href=\"readfwd?calview=month?year=%d?month=%d?day=1\">",
 728                 (int)(tm.tm_year)+1900, tm.tm_mon + 1);
 729         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/nextdate_32x.gif\" border=\"0\"></a>\n", _("next"));
 730
 731         wc_printf("</td></tr></table>\n");
 732
 733         /* Inner table (the real one) */
 734         wc_printf("<table width=\"100%%\" border=\"0\" cellpadding=\"1\" cellspacing=\"1\" "
 735                 "bgcolor=#EEEECC><TR>");
 736         wc_printf("</tr>\n");
 737         wc_printf("<tr><td colspan=\"100%%\">\n");
 738
 739         /* Now do 35 days */
 740         for (i = 0; i < 35; ++i) {
 741                 char weeknumber[255];
 742                 char weekday_name[32];
 743                 char *daycolor;
 744                 localtime_r(&thetime, &tm);
 745
 746
 747                 /* Before displaying Sunday, start a new CELL */
 748                 if ((i % 7) == 0) {
 749                         wc_strftime(&weeknumber[0], sizeof(weeknumber), "%U", &tm);
 750                         wc_printf("<table border='0' bgcolor=\"#EEEECC\" width='100%%'> <tr><th colspan='4'>%s %s</th></tr>"
 751                                 "   <tr><td>%s</td><td width='70%%'>%s</td><td>%s</td><td>%s</td></tr>\n",
 752                                 _("Week"),
 753                                 weeknumber,
 754                                 _("Hours"),
 755                                 _("Subject"),
 756                                 _("Start"),
 757                                 _("End")
 758                                 );
 759                 }
 760
 761                 daycolor=((tm.tm_mon != month-1) ? "DDDDDD" :
 762                         ((tm.tm_wday==0 || tm.tm_wday==6) ? "EEEECC" :
 763                                 "FFFFFF"));
 764
 765                 /* Day Header */
 766                 wc_strftime(weekday_name, sizeof weekday_name, "%A", &tm);
 767                 wc_printf("<tr><td bgcolor='%s' colspan='1' align='left'> %s,%i."
 768                         "</td><td bgcolor='%s' colspan='3'><hr></td></tr>\n",
 769                         daycolor,
 770                         weekday_name,tm.tm_mday,
 771                         daycolor);
 772
 773                 /* put the data of one day  here, stupid */
 774                 calendar_month_view_brief_events(thetime, daycolor);
 775
 776
 777                 /* After displaying Saturday, end the row */
 778                 if ((i % 7) == 6) {
 779                         wc_printf("</td></tr></table>\n");
 780                 }
 781
 782                 thetime += (time_t)86400;               /* ahead 24 hours */
 783         }
 784
 785         wc_printf("</table>"                    /* end of inner table */
 786                 "</td></tr></table>\n"          /* end of outer table */
 787         );
 788 }
 789
 790 /*
 791  * Calendar week view -- not implemented yet, this is a stub function
 792  */
 793 void calendar_week_view(int year, int month, int day) {
 794         wc_printf("<center><i>week view FIXME</i></center><br />\n");
 795 }
 796
 797
 798 /*
 799  * display one day
 800  * Display events for a particular hour of a particular day.
 801  * (Specify hour < 0 to show "all day" events)
 802  *
 803  * dstart and dend indicate which hours our "daytime" begins and end
 804  */
 805 void calendar_day_view_display_events(time_t thetime,
 806         int year,
 807         int month,
 808         int day,
 809         int notime_events,
 810         int dstart,
 811         int dend)
 812 {
 813         long hklen;
 814         const char *HashKey;
 815         void *vCal;
 816         HashPos *Pos;
 817         icalproperty *p = NULL;
 818         icalproperty *q = NULL;
 819         time_t event_tt;
 820         time_t event_tte;
 821         struct tm event_te;
 822         struct tm event_tm;
 823         int show_event = 0;
 824         int all_day_event = 0;
 825         int ongoing_event = 0;
 826         wcsession *WCC = WC;
 827         disp_cal *Cal;
 828         struct icaltimetype t;
 829         struct icaltimetype end_t;
 830         struct icaltimetype today_start_t;
 831         struct icaltimetype today_end_t;
 832         struct icaltimetype today_t;
 833         struct tm starting_tm;
 834         struct tm ending_tm;
 835         int top = 0;
 836         int bottom = 0;
 837         int gap = 1;
 838         int startmin = 0;
 839         int diffmin = 0;
 840         int endmin = 0;
 841
 842         char buf[256];
 843
 844         if (GetCount(WCC->disp_cal_items) == 0) {
 845                 /* nothing to display */
 846                 return;
 847         }
 848
 849         /* Create an imaginary event which spans the current day.  Any events which
 850          * overlap with this one take place at least partially in this day.
 851          */
 852         memset(&starting_tm, 0, sizeof(struct tm));
 853         starting_tm.tm_year = year - 1900;
 854         starting_tm.tm_mon = month - 1;
 855         starting_tm.tm_mday = day;
 856         starting_tm.tm_hour = 0;
 857         starting_tm.tm_min = 0;
 858         today_start_t = icaltime_from_timet_with_zone(mktime(&starting_tm), 0, icaltimezone_get_utc_timezone());
 859         today_start_t.is_utc = 1;
 860
 861         memset(&ending_tm, 0, sizeof(struct tm));
 862         ending_tm.tm_year = year - 1900;
 863         ending_tm.tm_mon = month - 1;
 864         ending_tm.tm_mday = day;
 865         ending_tm.tm_hour = 23;
 866         ending_tm.tm_min = 59;
 867         today_end_t = icaltime_from_timet_with_zone(mktime(&ending_tm), 0, icaltimezone_get_utc_timezone());
 868         today_end_t.is_utc = 1;
 869
 870         /*
 871          * Create another one without caring about the timezone for all day events.
 872          */
 873         today_t = icaltime_null_date();
 874         today_t.year = year;
 875         today_t.month = month;
 876         today_t.day = day;
 877
 878         /* Now loop through our list of events to see which ones occur today.
 879          */
 880         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
 881         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
 882                 Cal = (disp_cal*)vCal;
 883
 884                 all_day_event = 0;
 885                 ongoing_event=0;
 886
 887                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
 888                 if (q != NULL) {
 889                         t = icalproperty_get_dtstart(q);
 890                         event_tt = icaltime_as_timet(t);
 891                         localtime_r(&event_tt, &event_te);
 892                 }
 893                 else {
 894                         memset(&t, 0, sizeof t);
 895                 }
 896
 897                 if (t.is_date) all_day_event = 1;
 898
 899                 q = icalcomponent_get_first_property(Cal->cal, ICAL_DTEND_PROPERTY);
 900                 if (q != NULL) {
 901                         end_t = icalproperty_get_dtend(q);
 902                 }
 903                 else {
 904                         /* no end given means end = start */
 905                         memcpy(&end_t, &t, sizeof(struct icaltimetype));
 906                 }
 907
 908                 if (all_day_event)
 909                 {
 910                         show_event = ical_ctdl_is_overlap(t, end_t, today_t, icaltime_null_time());
 911                         if (icaltime_compare(t, end_t)) {
 912                                 /*
 913                                  * the end date is non-inclusive so adjust it by one
 914                                  * day because our test is inclusive, note that a day is
 915                                  * not to much because we are talking about all day
 916                                  * events
 917                                  */
 918                                 icaltime_adjust(&end_t, -1, 0, 0, 0);
 919                         }
 920                 }
 921                 else
 922                 {
 923                         show_event = ical_ctdl_is_overlap(t, end_t, today_start_t, today_end_t);
 924                 }
 925
 926                 event_tte = icaltime_as_timet(end_t);
 927                 localtime_r(&event_tte, &event_tm);
 928
 929                 /* If we determined that this event occurs today, then display it.
 930                  */
 931                 p = icalcomponent_get_first_property(Cal->cal,ICAL_SUMMARY_PROPERTY);
 932                 if (p == NULL) {
 933                         p = icalproperty_new_summary(_("Untitled Event"));
 934                         icalcomponent_add_property(Cal->cal, p);
 935                 }
 936
 937                 if ((show_event) && (p != NULL)) {
 938
 939                         if ((event_te.tm_mday != day) || (event_tm.tm_mday != day)) ongoing_event = 1;
 940
 941                         if (all_day_event && notime_events)
 942                         {
 943                                 wc_printf("<li class=\"event_framed%s\"> "
 944                                         "<a href=\"display_edit_event?"
 945                                         "msgnum=%ld?calview=day?year=%d?month=%d?day=%d\" "
 946                                         " class=\"event_title\">"
 947                                         ,
 948                                         (Cal->unread)?"_unread":"_read",
 949                                         Cal->cal_msgnum, year, month, day
 950                                 );
 951                                 escputs((char *) icalproperty_get_comment(p));
 952                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
 953                                 wc_printf("<i>%s</i><br />",      _("All day event"));
 954                                 wc_printf("<i>%s: %s</i><br />",  _("From"), Cal->from);
 955                                 wc_printf("<i>%s</i> ",           _("Summary:"));
 956                                 escputs((char *) icalproperty_get_comment(p));
 957                                 wc_printf("<br />");
 958                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
 959                                 if (q) {
 960                                         wc_printf("<i>%s</i> ", _("Location:"));
 961                                         escputs((char *)icalproperty_get_comment(q));
 962                                         wc_printf("<br />");
 963                                 }
 964                                 if (!icaltime_compare(t, end_t)) { /* one day only */
 965                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_LOCALEDATE);
 966                                         wc_printf("<i>%s</i> %s<br>", _("Date:"), buf);
 967                                 }
 968                                 else {
 969                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_LOCALEDATE);
 970                                         wc_printf("<i>%s</i> %s<br>", _("Starting date:"), buf);
 971                                         webcit_fmt_date(buf, 256, event_tte, DATEFMT_LOCALEDATE);
 972                                         wc_printf("<i>%s</i> %s<br>", _("Ending date:"), buf);
 973                                 }
 974                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
 975                                 if (q) {
 976                                         wc_printf("<i>%s</i> ", _("Notes:"));
 977                                         escputs((char *)icalproperty_get_comment(q));
 978                                         wc_printf("<br />");
 979                                 }
 980                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
 981                                 wc_printf("</a> <span>(");
 982                                 wc_printf(_("All day event"));
 983                                 wc_printf(")</span></li>\n");
 984                         }
 985                         else if (ongoing_event && notime_events)
 986                         {
 987                                 wc_printf("<li class=\"event_framed%s\"> "
 988                                         "<a href=\"display_edit_event?"
 989                                         "msgnum=%ld&calview=day?year=%d?month=%d?day=%d\" "
 990                                         " class=\"event_title\">"
 991                                         ,
 992                                         (Cal->unread)?"_unread":"_read",
 993                                         Cal->cal_msgnum, year, month, day
 994                                 );
 995                                 escputs((char *) icalproperty_get_comment(p));
 996                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
 997                                 wc_printf("<i>%s</i><br />",     _("Ongoing event"));
 998                                 wc_printf("<i>%s: %s</i><br />", _("From"), Cal->from);
 999                                 wc_printf("<i>%s</i> ",          _("Summary:"));
1000                                 escputs((char *) icalproperty_get_comment(p));
1001                                 wc_printf("<br />");
1002                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
1003                                 if (q) {
1004                                         wc_printf("<i>%s</i> ", _("Location:"));
1005                                         escputs((char *)icalproperty_get_comment(q));
1006                                         wc_printf("<br />");
1007                                                                 }
1008                                 webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1009                                 wc_printf("<i>%s</i> %s<br>", _("Starting date/time:"), buf);
1010                                 webcit_fmt_date(buf, 256, event_tte, DATEFMT_BRIEF);
1011                                 wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
1012                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
1013                                 if (q) {
1014                                         wc_printf("<i>%s</i> ", _("Notes:"));
1015                                         escputs((char *)icalproperty_get_comment(q));
1016                                         wc_printf("<br />");
1017                                 }
1018                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
1019                                 wc_printf("</a> <span>(");
1020                                 wc_printf(_("Ongoing event"));
1021                                 wc_printf(")</span></li>\n");
1022                         }
1023                         else if (!all_day_event && !notime_events)
1024                         {
1025                                 gap++;
1026
1027                                 if (event_te.tm_mday != day) event_te.tm_hour = 0;
1028                                 if (event_tm.tm_mday != day) event_tm.tm_hour = 24;
1029
1030                                 /* Calculate the location of the top of the box */
1031                                 if (event_te.tm_hour < dstart) {
1032                                         startmin = diffmin = event_te.tm_min / 6;
1033                                         top = (event_te.tm_hour * EXTRATIMELINE) + startmin;
1034                                 }
1035                                 else if ((event_te.tm_hour >= dstart) && (event_te.tm_hour <= dend)) {
1036                                         startmin = diffmin = (event_te.tm_min / 2);
1037                                         top = (dstart * EXTRATIMELINE) + ((event_te.tm_hour - dstart) * TIMELINE) + startmin;
1038                                 }
1039                                 else if (event_te.tm_hour >dend) {
1040                                         startmin = diffmin = event_te.tm_min / 6;
1041                                         top = (dstart * EXTRATIMELINE) + ((dend - dstart - 1) * TIMELINE) + ((event_tm.tm_hour - dend + 1) * EXTRATIMELINE) + startmin ;
1042                                 }
1043                                 else {
1044                                         /* should never get here */
1045                                 }
1046
1047                                 /* Calculate the location of the bottom of the box */
1048                                 if (event_tm.tm_hour < dstart) {
1049                                         endmin = diffmin = event_tm.tm_min / 6;
1050                                         bottom = (event_tm.tm_hour * EXTRATIMELINE) + endmin;
1051                                 }
1052                                 else if ((event_tm.tm_hour >= dstart) && (event_tm.tm_hour <= dend)) {
1053                                         endmin = diffmin = (event_tm.tm_min / 2);
1054                                         bottom = (dstart * EXTRATIMELINE) + ((event_tm.tm_hour - dstart) * TIMELINE) + endmin ;
1055                                 }
1056                                 else if (event_tm.tm_hour >dend) {
1057                                         endmin = diffmin = event_tm.tm_min / 6;
1058                                         bottom = (dstart * EXTRATIMELINE) + ((dend - dstart + 1) * TIMELINE) + ((event_tm.tm_hour - dend - 1) * EXTRATIMELINE) + endmin;
1059                                 }
1060                                 else {
1061                                         /* should never get here */
1062                                 }
1063
1064                                 wc_printf("<dd  class=\"event_framed%s\" "
1065                                         "style=\"position: absolute; "
1066                                         "top:%dpx; left:%dpx; "
1067                                         "height:%dpx; \" >",
1068                                         (Cal->unread)?"_unread":"_read",
1069                                         top, (gap * 40), (bottom-top)
1070                                         );
1071                                 wc_printf("<a href=\"display_edit_event?"
1072                                         "msgnum=%ld?calview=day?year=%d?month=%d?day=%d?hour=%d\" "
1073                                         "class=\"event_title\">"
1074                                         ,
1075                                         Cal->cal_msgnum, year, month, day, t.hour
1076                                 );
1077                                 escputs((char *) icalproperty_get_comment(p));
1078                                 wc_printf("<span class=\"tooltip\"><span class=\"btttop\"></span><span class=\"bttmiddle\">");
1079                                 wc_printf("<i>%s: %s</i><br />", _("From"), Cal->from);
1080                                 wc_printf("<i>%s</i> ",          _("Summary:"));
1081                                 escputs((char *) icalproperty_get_comment(p));
1082                                 wc_printf("<br />");
1083                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_LOCATION_PROPERTY);
1084                                 if (q) {
1085                                         wc_printf("<i>%s</i> ", _("Location:"));
1086                                         escputs((char *)icalproperty_get_comment(q));
1087                                         wc_printf("<br />");
1088                                                                 }
1089                                 if (!icaltime_compare(t, end_t)) { /* one day only */
1090                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1091                                         wc_printf("<i>%s</i> %s<br>", _("Date/time:"), buf);
1092                                 }
1093                                 else {
1094                                         webcit_fmt_date(buf, 256, event_tt, DATEFMT_BRIEF);
1095                                         wc_printf("<i>%s</i> %s<br>", _("Starting date/time:"), buf);
1096                                         webcit_fmt_date(buf, 256, event_tte, DATEFMT_BRIEF);
1097                                         wc_printf("<i>%s</i> %s<br>", _("Ending date/time:"), buf);
1098                                 }
1099                                 q = icalcomponent_get_first_property(Cal->cal,ICAL_DESCRIPTION_PROPERTY);
1100                                 if (q) {
1101                                         wc_printf("<i>%s</i> ", _("Notes:"));
1102                                         escputs((char *)icalproperty_get_comment(q));
1103                                         wc_printf("<br />");
1104                                 }
1105                                 wc_printf("</span><span class=\"bttbottom\"></span></span>");
1106                                 wc_printf("</a></dd>\n");
1107                         }
1108                 }
1109         }
1110         DeleteHashPos(&Pos);
1111 }
1112
1113 /*
1114  * view one day
1115  */
1116 void calendar_day_view(int year, int month, int day) {
1117         int hour;
1118         struct icaltimetype today, yesterday, tomorrow;
1119         long daystart;
1120         long dayend;
1121         struct tm d_tm;
1122         char d_str[160];
1123         int time_format;
1124         time_t today_t;
1125         int timeline = TIMELINE;
1126         int extratimeline = EXTRATIMELINE;
1127         int gap = 0;
1128         int hourlabel;
1129         int extrahourlabel;
1130
1131         time_format = get_time_format_cached ();
1132         get_pref_long("daystart", &daystart, 8);
1133         get_pref_long("dayend", &dayend, 17);
1134
1135         /* when loading daystart/dayend, replace missing, corrupt, or impossible values with defaults */
1136         if ((daystart < 0) || (dayend < 2) || (daystart >= 23) || (dayend > 23) || (dayend <= daystart)) {
1137                 daystart = 9;
1138                 dayend = 17;
1139         }
1140
1141         /* Today's date */
1142         memset(&d_tm, 0, sizeof d_tm);
1143         d_tm.tm_year = year - 1900;
1144         d_tm.tm_mon = month - 1;
1145         d_tm.tm_mday = day;
1146         today_t = mktime(&d_tm);
1147
1148         /* Figure out the dates for "yesterday" and "tomorrow" links */
1149
1150         memset(&today, 0, sizeof(struct icaltimetype));
1151         today.year = year;
1152         today.month = month;
1153         today.day = day;
1154         today.is_date = 1;
1155
1156         memcpy(&yesterday, &today, sizeof(struct icaltimetype));
1157         --yesterday.day;
1158         yesterday = icaltime_normalize(yesterday);
1159
1160         memcpy(&tomorrow, &today, sizeof(struct icaltimetype));
1161         ++tomorrow.day;
1162         tomorrow = icaltime_normalize(tomorrow);
1163
1164         /* Inner table (the real one) */
1165         wc_printf("<table class=\"calendar\" id=\"inner_day\"><tr> \n");
1166
1167         /* Innermost cell (contains hours etc.) */
1168         wc_printf("<td class=\"events_of_the_day\" >");
1169         wc_printf("<dl class=\"events\" >");
1170
1171         /* Now the middle of the day... */
1172
1173         extrahourlabel = extratimeline - 2;
1174         hourlabel = extrahourlabel * 150 / 100;
1175         if (hourlabel > (timeline - 2)) hourlabel = timeline - 2;
1176
1177         for (hour = 0; hour < daystart; ++hour) {       /* could do HEIGHT=xx */
1178                 wc_printf("<dt class=\"extrahour\"      "
1179                         "style=\"               "
1180                         "position: absolute;    "
1181                         "top: %dpx; left: 0px;  "
1182                         "height: %dpx;          "
1183                         "font-size: %dpx;       "
1184                         "\" >                   "
1185                         "<a href=\"display_edit_event?msgnum=0"
1186                         "?calview=day?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1187                         (hour * extratimeline ),
1188                         extratimeline,
1189                         extrahourlabel,
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                         "style=\"               "
1211                         "position: absolute;    "
1212                         "top: %ldpx; left: 0px; "
1213                         "height: %dpx;          "
1214                         "font-size: %dpx;       "
1215                         "\" >                   "
1216                         "<a href=\"display_edit_event?msgnum=0?calview=day"
1217                         "?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1218                         gap + ((hour - daystart) * timeline ),
1219                         timeline,
1220                         hourlabel,
1221                         year, month, day, hour
1222                         );
1223
1224                 if (time_format == WC_TIMEFORMAT_24) {
1225                         wc_printf("%2d:00</a> ", hour);
1226                 }
1227                 else {
1228                         wc_printf("%d:00%s</a> ",
1229                                 (hour <= 12 ? hour : hour-12),
1230                                 (hour < 12 ? "am" : "pm")
1231                                                 );
1232                 }
1233
1234                 wc_printf("</dt>");
1235         }
1236
1237         gap = gap + ((dayend - daystart + 1) * timeline);
1238
1239         for (hour = (dayend + 1); hour < 24; ++hour) {       /* could do HEIGHT=xx */
1240                 wc_printf("<dt class=\"extrahour\"     "
1241                         "style=\"               "
1242                         "position: absolute;    "
1243                         "top: %ldpx; left: 0px; "
1244                         "height: %dpx;          "
1245                         "font-size: %dpx;       "
1246                         "\" >                   "
1247                         "<a href=\"display_edit_event?msgnum=0?calview=day"
1248                         "?year=%d?month=%d?day=%d?hour=%d?minute=0\">",
1249                         gap + ((hour - dayend - 1) * extratimeline ),
1250                         extratimeline,
1251                         extrahourlabel,
1252                         year, month, day, hour
1253                 );
1254
1255                 if (time_format == WC_TIMEFORMAT_24) {
1256                         wc_printf("%2d:00</a> ", hour);
1257                 }
1258                 else {
1259                         wc_printf("%d:00%s</a> ",
1260                                 (hour <= 12 ? hour : hour-12),
1261                                 (hour < 12 ? "am" : "pm")
1262                         );
1263                 }
1264
1265                 wc_printf("</dt>");
1266         }
1267
1268         /* Display events with start and end times on this day */
1269         calendar_day_view_display_events(today_t, year, month, day, 0, daystart, dayend);
1270
1271         wc_printf("</dl>");
1272         wc_printf("</td>");                     /* end of innermost table */
1273
1274         /* Display extra events (start/end times not present or not today) in the middle column */
1275         wc_printf("<td class=\"extra_events\">");
1276
1277         wc_printf("<ul>");
1278
1279         /* Display all-day events */
1280         calendar_day_view_display_events(today_t, year, month, day, 1, daystart, dayend);
1281
1282         wc_printf("</ul>");
1283
1284         wc_printf("</td>");     /* end extra on the middle */
1285
1286         wc_printf("<td width='20%%' align=\"center\" valign=top>");     /* begin stuff-on-the-right */
1287
1288         /* Begin todays-date-with-left-and-right-arrows */
1289         wc_printf("<table border=\"0\" width=\"100%%\" "
1290                 "cellspacing=\"0\" cellpadding=\"0\" bgcolor=\"#FFFFFF\">\n");
1291         wc_printf("<tr>");
1292
1293         /* Left arrow */
1294         wc_printf("<td align=\"center\">");
1295         wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">",
1296                 yesterday.year, yesterday.month, yesterday.day);
1297         wc_printf("<img alt=\"previous\" align=\"middle\" src=\"static/prevdate_32x.gif\" border=\"0\"></a>");
1298         wc_printf("</td>");
1299
1300         wc_strftime(d_str, sizeof d_str,
1301                 "<td align=\"center\">"
1302                 "<font size='+2'>%A</font><br />"
1303                 "<font size='+2'>%B</font><br />"
1304                 "<font size='+3'>%d</font><br />"
1305                 "<font size='+2'>%Y</font><br />"
1306                 "</td>",
1307                 &d_tm
1308                 );
1309         wc_printf("%s", d_str);
1310
1311         /* Right arrow */
1312         wc_printf("<td align=\"center\">");
1313         wc_printf("<a href=\"readfwd?calview=day?year=%d?month=%d?day=%d\">",
1314                 tomorrow.year, tomorrow.month, tomorrow.day);
1315         wc_printf("<img alt=\"%s\" align=\"middle\" src=\"static/nextdate_32x.gif\""
1316                 " border=\"0\"></a>\n", _("next"));
1317         wc_printf("</td>");
1318
1319         wc_printf("</tr></table>\n");
1320         /* End todays-date-with-left-and-right-arrows */
1321
1322         /* Embed a mini month calendar in this space */
1323         wc_printf("<br />\n");
1324         embeddable_mini_calendar(year, month);
1325
1326         wc_printf("</td></tr>");                        /* end stuff-on-the-right */
1327         wc_printf("</table>\n");                        /* end of inner table */
1328 }
1329
1330
1331 /*
1332  * Display today's events.  Returns the number of items displayed.
1333  */
1334 int calendar_summary_view(void) {
1335         long hklen;
1336         const char *HashKey;
1337         void *vCal;
1338         HashPos *Pos;
1339         disp_cal *Cal;
1340         icalproperty *p;
1341         struct icaltimetype t;
1342         time_t event_tt;
1343         struct tm event_tm;
1344         struct tm today_tm;
1345         time_t now;
1346         int all_day_event = 0;
1347         char timestring[SIZ];
1348         wcsession *WCC = WC;
1349         int num_displayed = 0;
1350
1351         if (GetCount(WC->disp_cal_items) == 0) {
1352                 return(0);
1353         }
1354
1355         now = time(NULL);
1356         localtime_r(&now, &today_tm);
1357
1358         Pos = GetNewHashPos(WCC->disp_cal_items, 0);
1359         while (GetNextHashPos(WCC->disp_cal_items, Pos, &hklen, &HashKey, &vCal)) {
1360                 Cal = (disp_cal*)vCal;
1361                 p = icalcomponent_get_first_property(Cal->cal, ICAL_DTSTART_PROPERTY);
1362                 if (p != NULL) {
1363                         t = icalproperty_get_dtstart(p);
1364                         event_tt = icaltime_as_timet(t);
1365                         if (t.is_date) {
1366                                 all_day_event = 1;
1367                         }
1368                         else {
1369                                 all_day_event = 0;
1370                         }
1371                         fmt_time(timestring, SIZ, event_tt);
1372
1373                         if (all_day_event) {
1374                                 gmtime_r(&event_tt, &event_tm);
1375                         }
1376                         else {
1377                                 localtime_r(&event_tt, &event_tm);
1378                         }
1379
1380                         if ( (event_tm.tm_year == today_tm.tm_year)
1381                                 && (event_tm.tm_mon == today_tm.tm_mon)
1382                                 && (event_tm.tm_mday == today_tm.tm_mday)
1383                         ) {
1384
1385                                 p = icalcomponent_get_first_property(Cal->cal, ICAL_SUMMARY_PROPERTY);
1386                                 if (p == NULL) {
1387                                         p = icalproperty_new_summary(_("Untitled Task"));
1388                                         icalcomponent_add_property(Cal->cal, p);
1389                                 }
1390                                 if (p != NULL)
1391                                 {
1392                                         if (WCC->CurRoom.view == VIEW_TASKS) {
1393                                                 wc_printf("<a href=\"display_edit_task"
1394                                                         "?msgnum=%ld"
1395                                                         "?return_to_summary=1"
1396                                                         "?gotofirst=",
1397                                                         Cal->cal_msgnum
1398                                                 );
1399                                                 escputs(ChrPtr(WCC->CurRoom.name));
1400                                                 wc_printf("\">");
1401                                         }
1402                                         else {
1403                                                 wc_printf("<a href=\"display_edit_event"
1404                                                         "?msgnum=%ld"
1405                                                         "?calview=summary"
1406                                                         "?year=%d"
1407                                                         "?month=%d"
1408                                                         "?day=%d"
1409                                                         "?gotofirst=",
1410                                                         Cal->cal_msgnum,
1411                                                         today_tm.tm_year + 1900,
1412                                                         today_tm.tm_mon + 1,
1413                                                         today_tm.tm_mday
1414                                                 );
1415                                                 escputs(ChrPtr(WCC->CurRoom.name));
1416                                                 wc_printf("\">");
1417                                         }
1418                                         escputs((char *) icalproperty_get_comment(p));
1419                                         if (!all_day_event) {
1420                                                 wc_printf(" (%s)", timestring);
1421                                         }
1422                                         wc_printf("</a><br />\n");
1423                                         ++num_displayed;
1424                                 }
1425                         }
1426                 }
1427         }
1428         DeleteHashPos(&Pos);
1429         DeleteHash(&WC->disp_cal_items);
1430         return(num_displayed);
1431 }
1432
1433 /*
1434  * Parse the URL variables in order to determine the scope and display of a calendar view
1435  */
1436 int calendar_GetParamsGetServerCall(SharedMessageStatus *Stat,
1437                                     void **ViewSpecific,
1438                                     long oper,
1439                                     char *cmd,
1440                                     long len)
1441 {
1442         wcsession *WCC = WC;
1443         calview *c;
1444         time_t now;
1445         struct tm tm;
1446         char cv[32];
1447
1448         int span = 3888000;
1449
1450         c = (calview*) malloc(sizeof(calview));
1451         memset(c, 0, sizeof(calview));
1452         *ViewSpecific = (void*)c;
1453
1454         Stat->load_seen = 1;
1455         strcpy(cmd, "MSGS ALL");
1456         Stat->maxmsgs = 32767;
1457
1458         /* In case no date was specified, go with today */
1459         now = time(NULL);
1460         localtime_r(&now, &tm);
1461         c->year = tm.tm_year + 1900;
1462         c->month = tm.tm_mon + 1;
1463         c->day = tm.tm_mday;
1464
1465         /* Now see if a date was specified */
1466         if (havebstr("year")) c->year = ibstr("year");
1467         if (havebstr("month")) c->month = ibstr("month");
1468         if (havebstr("day")) c->day = ibstr("day");
1469
1470         /* How would you like that cooked? */
1471         if (havebstr("calview")) {
1472                 strcpy(cv, bstr("calview"));
1473         }
1474         else {
1475                 strcpy(cv, "month");
1476         }
1477
1478         /* Display the selected view */
1479         if (!strcasecmp(cv, "day")) {
1480                 c->view = calview_day;
1481         }
1482         else if (!strcasecmp(cv, "week")) {
1483                 c->view = calview_week;
1484         }
1485         else if (!strcasecmp(cv, "summary")) {  /* shouldn't ever happen, but just in case */
1486                 c->view = calview_day;
1487         }
1488         else {
1489                 if (WCC->CurRoom.view == VIEW_CALBRIEF) {
1490                         c->view = calview_brief;
1491                 }
1492                 else {
1493                         c->view = calview_month;
1494                 }
1495         }
1496
1497         /* Now try and set the lower and upper bounds so that we don't
1498          * burn too many cpu cycles parsing data way in the past or future
1499          */
1500
1501         tm.tm_year = c->year - 1900;
1502         tm.tm_mon = c->month - 1;
1503         tm.tm_mday = c->day;
1504         now = mktime(&tm);
1505
1506         if (c->view == calview_month)   span = 3888000;
1507         if (c->view == calview_brief)   span = 3888000;
1508         if (c->view == calview_week)    span = 604800;
1509         if (c->view == calview_day)     span = 86400;
1510         if (c->view == calview_summary) span = 86400;
1511
1512         c->lower_bound = now - span;
1513         c->upper_bound = now + span;
1514         return 200;
1515 }
1516
1517
1518
1519 /*
1520  * Render a calendar view from data previously loaded into memory
1521  */
1522 int calendar_RenderView_or_Tail(SharedMessageStatus *Stat,
1523                                 void **ViewSpecific,
1524                                 long oper)
1525 {
1526         wcsession *WCC = WC;
1527         calview *c = (calview*) *ViewSpecific;
1528
1529         if (c->view == calview_day) {
1530                 calendar_day_view(c->year, c->month, c->day);
1531         }
1532         else if (c->view == calview_week) {
1533                 calendar_week_view(c->year, c->month, c->day);
1534         }
1535         else {
1536                 if (WCC->CurRoom.view == VIEW_CALBRIEF) {
1537                         calendar_brief_month_view(c->year, c->month, c->day);
1538                 }
1539                 else {
1540                         calendar_month_view(c->year, c->month, c->day);
1541                 }
1542         }
1543
1544         /* Free the in-memory list of calendar items */
1545         DeleteHash(&WC->disp_cal_items);
1546         return 0;
1547 }