Pileus Git - ~andy/gtk/blob - gtk/gtkcalendar.c

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * GTK Calendar Widget
   5  * Copyright (C) 1998 Cesar Miquel, Shawn T. Amundson and Mattias Groenlund
   6  *
   7  * lib_date routines
   8  * Copyright (c) 1995, 1996, 1997, 1998 by Steffen Beyer
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free
  22  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 /*
  26  * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
  27  * file for a list of people on the GTK+ Team.  See the ChangeLog
  28  * files for a list of changes.  These files are distributed with
  29  * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
  30  */
  31
  32 /**
  33  * SECTION:gtkcalendar
  34  * @Short_description: Displays a calendar and allows the user to select a date
  35  * @Title: GtkCalendar
  36  *
  37  * #GtkCalendar is a widget that displays a Gregorian calendar, one month
  38  * at a time. It can be created with gtk_calendar_new().
  39  *
  40  * The month and year currently displayed can be altered with
  41  * gtk_calendar_select_month(). The exact day can be selected from the
  42  * displayed month using gtk_calendar_select_day().
  43  *
  44  * To place a visual marker on a particular day, use gtk_calendar_mark_day()
  45  * and to remove the marker, gtk_calendar_unmark_day(). Alternative, all
  46  * marks can be cleared with gtk_calendar_clear_marks().
  47  *
  48  * The way in which the calendar itself is displayed can be altered using
  49  * gtk_calendar_set_display_options().
  50  *
  51  * The selected date can be retrieved from a #GtkCalendar using
  52  * gtk_calendar_get_date().
  53  *
  54  * Users should be aware that, although the Gregorian calendar is the legal
  55  * calendar in most countries, it was adopted progressively between 1582 and
  56  * 1929. Display before these dates is likely to be historically incorrect.
  57  */
  58
  59 #include "config.h"
  60
  61 #ifdef HAVE_SYS_TIME_H
  62 #include <sys/time.h>
  63 #endif
  64 #ifdef HAVE__NL_TIME_FIRST_WEEKDAY
  65 #include <langinfo.h>
  66 #endif
  67 #include <string.h>
  68 #include <stdlib.h>
  69 #include <time.h>
  70
  71 #include <glib.h>
  72
  73 #ifdef G_OS_WIN32
  74 #include <windows.h>
  75 #endif
  76
  77 #include "gtkcalendar.h"
  78 #include "gtkdnd.h"
  79 #include "gtkintl.h"
  80 #include "gtkmain.h"
  81 #include "gtkmarshalers.h"
  82 #include "gtktooltip.h"
  83 #include "gtkprivate.h"
  84
  85 /***************************************************************************/
  86 /* The following date routines are taken from the lib_date package.
  87  * They have been minimally edited to avoid conflict with types defined
  88  * in win32 headers.
  89  */
  90
  91 static const guint month_length[2][13] =
  92 {
  93   { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
  94   { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
  95 };
  96
  97 static const guint days_in_months[2][14] =
  98 {
  99   { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
 100   { 0, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
 101 };
 102
 103 static glong  calc_days(guint year, guint mm, guint dd);
 104 static guint  day_of_week(guint year, guint mm, guint dd);
 105 static glong  dates_difference(guint year1, guint mm1, guint dd1,
 106                                guint year2, guint mm2, guint dd2);
 107 static guint  weeks_in_year(guint year);
 108
 109 static gboolean
 110 leap (guint year)
 111 {
 112   return((((year % 4) == 0) && ((year % 100) != 0)) || ((year % 400) == 0));
 113 }
 114
 115 static guint
 116 day_of_week (guint year, guint mm, guint dd)
 117 {
 118   glong  days;
 119
 120   days = calc_days(year, mm, dd);
 121   if (days > 0L)
 122     {
 123       days--;
 124       days %= 7L;
 125       days++;
 126     }
 127   return( (guint) days );
 128 }
 129
 130 static guint weeks_in_year(guint year)
 131 {
 132   return(52 + ((day_of_week(year,1,1)==4) || (day_of_week(year,12,31)==4)));
 133 }
 134
 135 static gboolean
 136 check_date(guint year, guint mm, guint dd)
 137 {
 138   if (year < 1) return FALSE;
 139   if ((mm < 1) || (mm > 12)) return FALSE;
 140   if ((dd < 1) || (dd > month_length[leap(year)][mm])) return FALSE;
 141   return TRUE;
 142 }
 143
 144 static guint
 145 week_number(guint year, guint mm, guint dd)
 146 {
 147   guint first;
 148
 149   first = day_of_week(year,1,1) - 1;
 150   return( (guint) ( (dates_difference(year,1,1, year,mm,dd) + first) / 7L ) +
 151           (first < 4) );
 152 }
 153
 154 static glong
 155 year_to_days(guint year)
 156 {
 157   return( year * 365L + (year / 4) - (year / 100) + (year / 400) );
 158 }
 159
 160
 161 static glong
 162 calc_days(guint year, guint mm, guint dd)
 163 {
 164   gboolean lp;
 165
 166   if (year < 1) return(0L);
 167   if ((mm < 1) || (mm > 12)) return(0L);
 168   if ((dd < 1) || (dd > month_length[(lp = leap(year))][mm])) return(0L);
 169   return( year_to_days(--year) + days_in_months[lp][mm] + dd );
 170 }
 171
 172 static gboolean
 173 week_of_year(guint *week, guint *year, guint mm, guint dd)
 174 {
 175   if (check_date(*year,mm,dd))
 176     {
 177       *week = week_number(*year,mm,dd);
 178       if (*week == 0)
 179         *week = weeks_in_year(--(*year));
 180       else if (*week > weeks_in_year(*year))
 181         {
 182           *week = 1;
 183           (*year)++;
 184         }
 185       return TRUE;
 186     }
 187   return FALSE;
 188 }
 189
 190 static glong
 191 dates_difference(guint year1, guint mm1, guint dd1,
 192                  guint year2, guint mm2, guint dd2)
 193 {
 194   return( calc_days(year2, mm2, dd2) - calc_days(year1, mm1, dd1) );
 195 }
 196
 197 /*** END OF lib_date routines ********************************************/
 198
 199 /* Spacing around day/week headers and main area, inside those windows */
 200 #define CALENDAR_MARGIN          0
 201
 202 #define DAY_XSEP                 0 /* not really good for small calendar */
 203 #define DAY_YSEP                 0 /* not really good for small calendar */
 204
 205 #define SCROLL_DELAY_FACTOR      5
 206
 207 enum {
 208   ARROW_YEAR_LEFT,
 209   ARROW_YEAR_RIGHT,
 210   ARROW_MONTH_LEFT,
 211   ARROW_MONTH_RIGHT
 212 };
 213
 214 enum {
 215   MONTH_PREV,
 216   MONTH_CURRENT,
 217   MONTH_NEXT
 218 };
 219
 220 enum {
 221   MONTH_CHANGED_SIGNAL,
 222   DAY_SELECTED_SIGNAL,
 223   DAY_SELECTED_DOUBLE_CLICK_SIGNAL,
 224   PREV_MONTH_SIGNAL,
 225   NEXT_MONTH_SIGNAL,
 226   PREV_YEAR_SIGNAL,
 227   NEXT_YEAR_SIGNAL,
 228   LAST_SIGNAL
 229 };
 230
 231 enum
 232 {
 233   PROP_0,
 234   PROP_YEAR,
 235   PROP_MONTH,
 236   PROP_DAY,
 237   PROP_SHOW_HEADING,
 238   PROP_SHOW_DAY_NAMES,
 239   PROP_NO_MONTH_CHANGE,
 240   PROP_SHOW_WEEK_NUMBERS,
 241   PROP_SHOW_DETAILS,
 242   PROP_DETAIL_WIDTH_CHARS,
 243   PROP_DETAIL_HEIGHT_ROWS
 244 };
 245
 246 static guint gtk_calendar_signals[LAST_SIGNAL] = { 0 };
 247
 248 struct _GtkCalendarPrivate
 249 {
 250   GtkCalendarDisplayOptions display_flags;
 251
 252   GdkWindow *main_win;
 253   GdkWindow *arrow_win[4];
 254
 255   gchar grow_space [32];
 256
 257   gint  month;
 258   gint  year;
 259   gint  selected_day;
 260
 261   gint  day_month[6][7];
 262   gint  day[6][7];
 263
 264   gint  num_marked_dates;
 265   gint  marked_date[31];
 266
 267   gint  focus_row;
 268   gint  focus_col;
 269
 270   guint header_h;
 271   guint day_name_h;
 272   guint main_h;
 273
 274   guint arrow_state[4];
 275   guint arrow_width;
 276   guint max_month_width;
 277   guint max_year_width;
 278
 279   guint day_width;
 280   guint week_width;
 281
 282   guint min_day_width;
 283   guint max_day_char_width;
 284   guint max_day_char_ascent;
 285   guint max_day_char_descent;
 286   guint max_label_char_ascent;
 287   guint max_label_char_descent;
 288   guint max_week_char_width;
 289
 290   /* flags */
 291   guint year_before : 1;
 292
 293   guint need_timer  : 1;
 294
 295   guint in_drag : 1;
 296   guint drag_highlight : 1;
 297
 298   guint32 timer;
 299   gint click_child;
 300
 301   gint week_start;
 302
 303   gint drag_start_x;
 304   gint drag_start_y;
 305
 306   /* Optional callback, used to display extra information for each day. */
 307   GtkCalendarDetailFunc detail_func;
 308   gpointer              detail_func_user_data;
 309   GDestroyNotify        detail_func_destroy;
 310
 311   /* Size requistion for details provided by the hook. */
 312   gint detail_height_rows;
 313   gint detail_width_chars;
 314   gint detail_overflow[6];
 315 };
 316
 317 #define GTK_CALENDAR_GET_PRIVATE(widget)  (GTK_CALENDAR (widget)->priv)
 318
 319 static void gtk_calendar_finalize     (GObject      *calendar);
 320 static void gtk_calendar_destroy      (GtkWidget    *widget);
 321 static void gtk_calendar_set_property (GObject      *object,
 322                                        guint         prop_id,
 323                                        const GValue *value,
 324                                        GParamSpec   *pspec);
 325 static void gtk_calendar_get_property (GObject      *object,
 326                                        guint         prop_id,
 327                                        GValue       *value,
 328                                        GParamSpec   *pspec);
 329
 330 static void     gtk_calendar_realize        (GtkWidget        *widget);
 331 static void     gtk_calendar_unrealize      (GtkWidget        *widget);
 332 static void     gtk_calendar_map            (GtkWidget        *widget);
 333 static void     gtk_calendar_unmap          (GtkWidget        *widget);
 334 static void     gtk_calendar_get_preferred_width  (GtkWidget   *widget,
 335                                                    gint        *minimum,
 336                                                    gint        *natural);
 337 static void     gtk_calendar_get_preferred_height (GtkWidget   *widget,
 338                                                    gint        *minimum,
 339                                                    gint        *natural);
 340 static void     gtk_calendar_size_allocate  (GtkWidget        *widget,
 341                                              GtkAllocation    *allocation);
 342 static gboolean gtk_calendar_draw           (GtkWidget        *widget,
 343                                              cairo_t          *cr);
 344 static gboolean gtk_calendar_button_press   (GtkWidget        *widget,
 345                                              GdkEventButton   *event);
 346 static gboolean gtk_calendar_button_release (GtkWidget        *widget,
 347                                              GdkEventButton   *event);
 348 static gboolean gtk_calendar_motion_notify  (GtkWidget        *widget,
 349                                              GdkEventMotion   *event);
 350 static gboolean gtk_calendar_enter_notify   (GtkWidget        *widget,
 351                                              GdkEventCrossing *event);
 352 static gboolean gtk_calendar_leave_notify   (GtkWidget        *widget,
 353                                              GdkEventCrossing *event);
 354 static gboolean gtk_calendar_scroll         (GtkWidget        *widget,
 355                                              GdkEventScroll   *event);
 356 static gboolean gtk_calendar_key_press      (GtkWidget        *widget,
 357                                              GdkEventKey      *event);
 358 static gboolean gtk_calendar_focus_out      (GtkWidget        *widget,
 359                                              GdkEventFocus    *event);
 360 static void     gtk_calendar_grab_notify    (GtkWidget        *widget,
 361                                              gboolean          was_grabbed);
 362 static void     gtk_calendar_state_flags_changed  (GtkWidget     *widget,
 363                                                    GtkStateFlags  previous_state);
 364 static gboolean gtk_calendar_query_tooltip  (GtkWidget        *widget,
 365                                              gint              x,
 366                                              gint              y,
 367                                              gboolean          keyboard_mode,
 368                                              GtkTooltip       *tooltip);
 369
 370 static void     gtk_calendar_drag_data_get      (GtkWidget        *widget,
 371                                                  GdkDragContext   *context,
 372                                                  GtkSelectionData *selection_data,
 373                                                  guint             info,
 374                                                  guint             time);
 375 static void     gtk_calendar_drag_data_received (GtkWidget        *widget,
 376                                                  GdkDragContext   *context,
 377                                                  gint              x,
 378                                                  gint              y,
 379                                                  GtkSelectionData *selection_data,
 380                                                  guint             info,
 381                                                  guint             time);
 382 static gboolean gtk_calendar_drag_motion        (GtkWidget        *widget,
 383                                                  GdkDragContext   *context,
 384                                                  gint              x,
 385                                                  gint              y,
 386                                                  guint             time);
 387 static void     gtk_calendar_drag_leave         (GtkWidget        *widget,
 388                                                  GdkDragContext   *context,
 389                                                  guint             time);
 390 static gboolean gtk_calendar_drag_drop          (GtkWidget        *widget,
 391                                                  GdkDragContext   *context,
 392                                                  gint              x,
 393                                                  gint              y,
 394                                                  guint             time);
 395
 396
 397 static void calendar_start_spinning (GtkCalendar *calendar,
 398                                      gint         click_child);
 399 static void calendar_stop_spinning  (GtkCalendar *calendar);
 400
 401 static void calendar_invalidate_day     (GtkCalendar *widget,
 402                                          gint       row,
 403                                          gint       col);
 404 static void calendar_invalidate_day_num (GtkCalendar *widget,
 405                                          gint       day);
 406 static void calendar_invalidate_arrow   (GtkCalendar *widget,
 407                                          guint      arrow);
 408
 409 static void calendar_compute_days      (GtkCalendar *calendar);
 410 static gint calendar_get_xsep          (GtkCalendar *calendar);
 411 static gint calendar_get_ysep          (GtkCalendar *calendar);
 412 static gint calendar_get_inner_border  (GtkCalendar *calendar);
 413
 414 static char    *default_abbreviated_dayname[7];
 415 static char    *default_monthname[12];
 416
 417 G_DEFINE_TYPE (GtkCalendar, gtk_calendar, GTK_TYPE_WIDGET)
 418
 419 static void
 420 gtk_calendar_class_init (GtkCalendarClass *class)
 421 {
 422   GObjectClass   *gobject_class;
 423   GtkWidgetClass *widget_class;
 424
 425   gobject_class = (GObjectClass*)  class;
 426   widget_class = (GtkWidgetClass*) class;
 427
 428   gobject_class->set_property = gtk_calendar_set_property;
 429   gobject_class->get_property = gtk_calendar_get_property;
 430   gobject_class->finalize = gtk_calendar_finalize;
 431
 432   widget_class->destroy = gtk_calendar_destroy;
 433   widget_class->realize = gtk_calendar_realize;
 434   widget_class->unrealize = gtk_calendar_unrealize;
 435   widget_class->map = gtk_calendar_map;
 436   widget_class->unmap = gtk_calendar_unmap;
 437   widget_class->draw = gtk_calendar_draw;
 438   widget_class->get_preferred_width = gtk_calendar_get_preferred_width;
 439   widget_class->get_preferred_height = gtk_calendar_get_preferred_height;
 440   widget_class->size_allocate = gtk_calendar_size_allocate;
 441   widget_class->button_press_event = gtk_calendar_button_press;
 442   widget_class->button_release_event = gtk_calendar_button_release;
 443   widget_class->motion_notify_event = gtk_calendar_motion_notify;
 444   widget_class->enter_notify_event = gtk_calendar_enter_notify;
 445   widget_class->leave_notify_event = gtk_calendar_leave_notify;
 446   widget_class->key_press_event = gtk_calendar_key_press;
 447   widget_class->scroll_event = gtk_calendar_scroll;
 448   widget_class->state_flags_changed = gtk_calendar_state_flags_changed;
 449   widget_class->grab_notify = gtk_calendar_grab_notify;
 450   widget_class->focus_out_event = gtk_calendar_focus_out;
 451   widget_class->query_tooltip = gtk_calendar_query_tooltip;
 452
 453   widget_class->drag_data_get = gtk_calendar_drag_data_get;
 454   widget_class->drag_motion = gtk_calendar_drag_motion;
 455   widget_class->drag_leave = gtk_calendar_drag_leave;
 456   widget_class->drag_drop = gtk_calendar_drag_drop;
 457   widget_class->drag_data_received = gtk_calendar_drag_data_received;
 458
 459   gtk_widget_class_set_accessible_role (widget_class, ATK_ROLE_CALENDAR);
 460
 461   /**
 462    * GtkCalendar:year:
 463    *
 464    * The selected year.
 465    * This property gets initially set to the current year.
 466    */
 467   g_object_class_install_property (gobject_class,
 468                                    PROP_YEAR,
 469                                    g_param_spec_int ("year",
 470                                                      P_("Year"),
 471                                                      P_("The selected year"),
 472                                                      0, G_MAXINT >> 9, 0,
 473                                                      GTK_PARAM_READWRITE));
 474
 475   /**
 476    * GtkCalendar:month:
 477    *
 478    * The selected month (as a number between 0 and 11).
 479    * This property gets initially set to the current month.
 480    */
 481   g_object_class_install_property (gobject_class,
 482                                    PROP_MONTH,
 483                                    g_param_spec_int ("month",
 484                                                      P_("Month"),
 485                                                      P_("The selected month (as a number between 0 and 11)"),
 486                                                      0, 11, 0,
 487                                                      GTK_PARAM_READWRITE));
 488
 489   /**
 490    * GtkCalendar:day:
 491    *
 492    * The selected day (as a number between 1 and 31, or 0
 493    * to unselect the currently selected day).
 494    * This property gets initially set to the current day.
 495    */
 496   g_object_class_install_property (gobject_class,
 497                                    PROP_DAY,
 498                                    g_param_spec_int ("day",
 499                                                      P_("Day"),
 500                                                      P_("The selected day (as a number between 1 and 31, or 0 to unselect the currently selected day)"),
 501                                                      0, 31, 0,
 502                                                      GTK_PARAM_READWRITE));
 503
 504 /**
 505  * GtkCalendar:show-heading:
 506  *
 507  * Determines whether a heading is displayed.
 508  *
 509  * Since: 2.4
 510  */
 511   g_object_class_install_property (gobject_class,
 512                                    PROP_SHOW_HEADING,
 513                                    g_param_spec_boolean ("show-heading",
 514                                                          P_("Show Heading"),
 515                                                          P_("If TRUE, a heading is displayed"),
 516                                                          TRUE,
 517                                                          GTK_PARAM_READWRITE));
 518
 519 /**
 520  * GtkCalendar:show-day-names:
 521  *
 522  * Determines whether day names are displayed.
 523  *
 524  * Since: 2.4
 525  */
 526   g_object_class_install_property (gobject_class,
 527                                    PROP_SHOW_DAY_NAMES,
 528                                    g_param_spec_boolean ("show-day-names",
 529                                                          P_("Show Day Names"),
 530                                                          P_("If TRUE, day names are displayed"),
 531                                                          TRUE,
 532                                                          GTK_PARAM_READWRITE));
 533 /**
 534  * GtkCalendar:no-month-change:
 535  *
 536  * Determines whether the selected month can be changed.
 537  *
 538  * Since: 2.4
 539  */
 540   g_object_class_install_property (gobject_class,
 541                                    PROP_NO_MONTH_CHANGE,
 542                                    g_param_spec_boolean ("no-month-change",
 543                                                          P_("No Month Change"),
 544                                                          P_("If TRUE, the selected month cannot be changed"),
 545                                                          FALSE,
 546                                                          GTK_PARAM_READWRITE));
 547
 548 /**
 549  * GtkCalendar:show-week-numbers:
 550  *
 551  * Determines whether week numbers are displayed.
 552  *
 553  * Since: 2.4
 554  */
 555   g_object_class_install_property (gobject_class,
 556                                    PROP_SHOW_WEEK_NUMBERS,
 557                                    g_param_spec_boolean ("show-week-numbers",
 558                                                          P_("Show Week Numbers"),
 559                                                          P_("If TRUE, week numbers are displayed"),
 560                                                          FALSE,
 561                                                          GTK_PARAM_READWRITE));
 562
 563 /**
 564  * GtkCalendar:detail-width-chars:
 565  *
 566  * Width of a detail cell, in characters.
 567  * A value of 0 allows any width. See gtk_calendar_set_detail_func().
 568  *
 569  * Since: 2.14
 570  */
 571   g_object_class_install_property (gobject_class,
 572                                    PROP_DETAIL_WIDTH_CHARS,
 573                                    g_param_spec_int ("detail-width-chars",
 574                                                      P_("Details Width"),
 575                                                      P_("Details width in characters"),
 576                                                      0, 127, 0,
 577                                                      GTK_PARAM_READWRITE));
 578
 579 /**
 580  * GtkCalendar:detail-height-rows:
 581  *
 582  * Height of a detail cell, in rows.
 583  * A value of 0 allows any width. See gtk_calendar_set_detail_func().
 584  *
 585  * Since: 2.14
 586  */
 587   g_object_class_install_property (gobject_class,
 588                                    PROP_DETAIL_HEIGHT_ROWS,
 589                                    g_param_spec_int ("detail-height-rows",
 590                                                      P_("Details Height"),
 591                                                      P_("Details height in rows"),
 592                                                      0, 127, 0,
 593                                                      GTK_PARAM_READWRITE));
 594
 595 /**
 596  * GtkCalendar:show-details:
 597  *
 598  * Determines whether details are shown directly in the widget, or if they are
 599  * available only as tooltip. When this property is set days with details are
 600  * marked.
 601  *
 602  * Since: 2.14
 603  */
 604   g_object_class_install_property (gobject_class,
 605                                    PROP_SHOW_DETAILS,
 606                                    g_param_spec_boolean ("show-details",
 607                                                          P_("Show Details"),
 608                                                          P_("If TRUE, details are shown"),
 609                                                          TRUE,
 610                                                          GTK_PARAM_READWRITE));
 611
 612
 613   /**
 614    * GtkCalendar:inner-border
 615    *
 616    * The spacing around the day/week headers and main area.
 617    */
 618   gtk_widget_class_install_style_property (widget_class,
 619                                            g_param_spec_int ("inner-border",
 620                                                              P_("Inner border"),
 621                                                              P_("Inner border space"),
 622                                                              0, G_MAXINT, 4,
 623                                                              GTK_PARAM_READABLE));
 624
 625   /**
 626    * GtkCalndar:vertical-separation
 627    *
 628    * Separation between day headers and main area.
 629    */
 630   gtk_widget_class_install_style_property (widget_class,
 631                                            g_param_spec_int ("vertical-separation",
 632                                                              P_("Vertical separation"),
 633                                                              P_("Space between day headers and main area"),
 634                                                              0, G_MAXINT, 4,
 635                                                              GTK_PARAM_READABLE));
 636
 637   /**
 638    * GtkCalendar:horizontal-separation
 639    *
 640    * Separation between week headers and main area.
 641    */
 642   gtk_widget_class_install_style_property (widget_class,
 643                                            g_param_spec_int ("horizontal-separation",
 644                                                              P_("Horizontal separation"),
 645                                                              P_("Space between week headers and main area"),
 646                                                              0, G_MAXINT, 4,
 647                                                              GTK_PARAM_READABLE));
 648
 649   /**
 650    * GtkCalendar::month-changed:
 651    * @calendar: the object which received the signal.
 652    *
 653    * Emitted when the user clicks a button to change the selected month on a
 654    * calendar.
 655    */
 656   gtk_calendar_signals[MONTH_CHANGED_SIGNAL] =
 657     g_signal_new (I_("month-changed"),
 658                   G_OBJECT_CLASS_TYPE (gobject_class),
 659                   G_SIGNAL_RUN_FIRST,
 660                   G_STRUCT_OFFSET (GtkCalendarClass, month_changed),
 661                   NULL, NULL,
 662                   _gtk_marshal_VOID__VOID,
 663                   G_TYPE_NONE, 0);
 664
 665   /**
 666    * GtkCalendar::day-selected:
 667    * @calendar: the object which received the signal.
 668    *
 669    * Emitted when the user selects a day.
 670    */
 671   gtk_calendar_signals[DAY_SELECTED_SIGNAL] =
 672     g_signal_new (I_("day-selected"),
 673                   G_OBJECT_CLASS_TYPE (gobject_class),
 674                   G_SIGNAL_RUN_FIRST,
 675                   G_STRUCT_OFFSET (GtkCalendarClass, day_selected),
 676                   NULL, NULL,
 677                   _gtk_marshal_VOID__VOID,
 678                   G_TYPE_NONE, 0);
 679
 680   /**
 681    * GtkCalendar::day-selected-double-click:
 682    * @calendar: the object which received the signal.
 683    *
 684    * Emitted when the user double-clicks a day.
 685    */
 686   gtk_calendar_signals[DAY_SELECTED_DOUBLE_CLICK_SIGNAL] =
 687     g_signal_new (I_("day-selected-double-click"),
 688                   G_OBJECT_CLASS_TYPE (gobject_class),
 689                   G_SIGNAL_RUN_FIRST,
 690                   G_STRUCT_OFFSET (GtkCalendarClass, day_selected_double_click),
 691                   NULL, NULL,
 692                   _gtk_marshal_VOID__VOID,
 693                   G_TYPE_NONE, 0);
 694
 695   /**
 696    * GtkCalendar::prev-month:
 697    * @calendar: the object which received the signal.
 698    *
 699    * Emitted when the user switched to the previous month.
 700    */
 701   gtk_calendar_signals[PREV_MONTH_SIGNAL] =
 702     g_signal_new (I_("prev-month"),
 703                   G_OBJECT_CLASS_TYPE (gobject_class),
 704                   G_SIGNAL_RUN_FIRST,
 705                   G_STRUCT_OFFSET (GtkCalendarClass, prev_month),
 706                   NULL, NULL,
 707                   _gtk_marshal_VOID__VOID,
 708                   G_TYPE_NONE, 0);
 709
 710   /**
 711    * GtkCalendar::next-month:
 712    * @calendar: the object which received the signal.
 713    *
 714    * Emitted when the user switched to the next month.
 715    */
 716   gtk_calendar_signals[NEXT_MONTH_SIGNAL] =
 717     g_signal_new (I_("next-month"),
 718                   G_OBJECT_CLASS_TYPE (gobject_class),
 719                   G_SIGNAL_RUN_FIRST,
 720                   G_STRUCT_OFFSET (GtkCalendarClass, next_month),
 721                   NULL, NULL,
 722                   _gtk_marshal_VOID__VOID,
 723                   G_TYPE_NONE, 0);
 724
 725   /**
 726    * GtkCalendar::prev-year:
 727    * @calendar: the object which received the signal.
 728    *
 729    * Emitted when user switched to the previous year.
 730    */
 731   gtk_calendar_signals[PREV_YEAR_SIGNAL] =
 732     g_signal_new (I_("prev-year"),
 733                   G_OBJECT_CLASS_TYPE (gobject_class),
 734                   G_SIGNAL_RUN_FIRST,
 735                   G_STRUCT_OFFSET (GtkCalendarClass, prev_year),
 736                   NULL, NULL,
 737                   _gtk_marshal_VOID__VOID,
 738                   G_TYPE_NONE, 0);
 739
 740   /**
 741    * GtkCalendar::next-year:
 742    * @calendar: the object which received the signal.
 743    *
 744    * Emitted when user switched to the next year.
 745    */
 746   gtk_calendar_signals[NEXT_YEAR_SIGNAL] =
 747     g_signal_new (I_("next-year"),
 748                   G_OBJECT_CLASS_TYPE (gobject_class),
 749                   G_SIGNAL_RUN_FIRST,
 750                   G_STRUCT_OFFSET (GtkCalendarClass, next_year),
 751                   NULL, NULL,
 752                   _gtk_marshal_VOID__VOID,
 753                   G_TYPE_NONE, 0);
 754
 755   g_type_class_add_private (gobject_class, sizeof (GtkCalendarPrivate));
 756 }
 757
 758 static void
 759 gtk_calendar_init (GtkCalendar *calendar)
 760 {
 761   GtkWidget *widget = GTK_WIDGET (calendar);
 762   time_t secs;
 763   struct tm *tm;
 764   gint i;
 765 #ifdef G_OS_WIN32
 766   wchar_t wbuffer[100];
 767 #else
 768   char buffer[255];
 769   time_t tmp_time;
 770 #endif
 771   GtkCalendarPrivate *priv;
 772   gchar *year_before;
 773 #ifdef HAVE__NL_TIME_FIRST_WEEKDAY
 774   union { unsigned int word; char *string; } langinfo;
 775   gint week_1stday = 0;
 776   gint first_weekday = 1;
 777   guint week_origin;
 778 #else
 779   gchar *week_start;
 780 #endif
 781
 782   priv = calendar->priv = G_TYPE_INSTANCE_GET_PRIVATE (calendar,
 783                                                        GTK_TYPE_CALENDAR,
 784                                                        GtkCalendarPrivate);
 785
 786   gtk_widget_set_can_focus (widget, TRUE);
 787   gtk_widget_set_has_window (widget, FALSE);
 788
 789   if (!default_abbreviated_dayname[0])
 790     for (i=0; i<7; i++)
 791       {
 792 #ifndef G_OS_WIN32
 793         tmp_time= (i+3)*86400;
 794         strftime ( buffer, sizeof (buffer), "%a", gmtime (&tmp_time));
 795         default_abbreviated_dayname[i] = g_locale_to_utf8 (buffer, -1, NULL, NULL, NULL);
 796 #else
 797         if (!GetLocaleInfoW (GetThreadLocale (), LOCALE_SABBREVDAYNAME1 + (i+6)%7,
 798                              wbuffer, G_N_ELEMENTS (wbuffer)))
 799           default_abbreviated_dayname[i] = g_strdup_printf ("(%d)", i);
 800         else
 801           default_abbreviated_dayname[i] = g_utf16_to_utf8 (wbuffer, -1, NULL, NULL, NULL);
 802 #endif
 803       }
 804
 805   if (!default_monthname[0])
 806     for (i=0; i<12; i++)
 807       {
 808 #ifndef G_OS_WIN32
 809         tmp_time=i*2764800;
 810         strftime ( buffer, sizeof (buffer), "%B", gmtime (&tmp_time));
 811         default_monthname[i] = g_locale_to_utf8 (buffer, -1, NULL, NULL, NULL);
 812 #else
 813         if (!GetLocaleInfoW (GetThreadLocale (), LOCALE_SMONTHNAME1 + i,
 814                              wbuffer, G_N_ELEMENTS (wbuffer)))
 815           default_monthname[i] = g_strdup_printf ("(%d)", i);
 816         else
 817           default_monthname[i] = g_utf16_to_utf8 (wbuffer, -1, NULL, NULL, NULL);
 818 #endif
 819       }
 820
 821   /* Set defaults */
 822   secs = time (NULL);
 823   tm = localtime (&secs);
 824   priv->month = tm->tm_mon;
 825   priv->year  = 1900 + tm->tm_year;
 826
 827   for (i=0;i<31;i++)
 828     priv->marked_date[i] = FALSE;
 829   priv->num_marked_dates = 0;
 830   priv->selected_day = tm->tm_mday;
 831
 832   priv->display_flags = (GTK_CALENDAR_SHOW_HEADING |
 833                              GTK_CALENDAR_SHOW_DAY_NAMES |
 834                              GTK_CALENDAR_SHOW_DETAILS);
 835
 836   priv->focus_row = -1;
 837   priv->focus_col = -1;
 838
 839   priv->max_year_width = 0;
 840   priv->max_month_width = 0;
 841   priv->max_day_char_width = 0;
 842   priv->max_week_char_width = 0;
 843
 844   priv->max_day_char_ascent = 0;
 845   priv->max_day_char_descent = 0;
 846   priv->max_label_char_ascent = 0;
 847   priv->max_label_char_descent = 0;
 848
 849   priv->arrow_width = 10;
 850
 851   priv->need_timer = 0;
 852   priv->timer = 0;
 853   priv->click_child = -1;
 854
 855   priv->in_drag = 0;
 856   priv->drag_highlight = 0;
 857
 858   gtk_drag_dest_set (widget, 0, NULL, 0, GDK_ACTION_COPY);
 859   gtk_drag_dest_add_text_targets (widget);
 860
 861   priv->year_before = 0;
 862
 863   /* Translate to calendar:YM if you want years to be displayed
 864    * before months; otherwise translate to calendar:MY.
 865    * Do *not* translate it to anything else, if it
 866    * it isn't calendar:YM or calendar:MY it will not work.
 867    *
 868    * Note that the ordering described here is logical order, which is
 869    * further influenced by BIDI ordering. Thus, if you have a default
 870    * text direction of RTL and specify "calendar:YM", then the year
 871    * will appear to the right of the month.
 872    */
 873   year_before = _("calendar:MY");
 874   if (strcmp (year_before, "calendar:YM") == 0)
 875     priv->year_before = 1;
 876   else if (strcmp (year_before, "calendar:MY") != 0)
 877     g_warning ("Whoever translated calendar:MY did so wrongly.\n");
 878
 879 #ifdef G_OS_WIN32
 880   priv->week_start = 0;
 881   week_start = NULL;
 882
 883   if (GetLocaleInfoW (GetThreadLocale (), LOCALE_IFIRSTDAYOFWEEK,
 884                       wbuffer, G_N_ELEMENTS (wbuffer)))
 885     week_start = g_utf16_to_utf8 (wbuffer, -1, NULL, NULL, NULL);
 886
 887   if (week_start != NULL)
 888     {
 889       priv->week_start = (week_start[0] - '0' + 1) % 7;
 890       g_free(week_start);
 891     }
 892 #else
 893 #ifdef HAVE__NL_TIME_FIRST_WEEKDAY
 894   langinfo.string = nl_langinfo (_NL_TIME_FIRST_WEEKDAY);
 895   first_weekday = langinfo.string[0];
 896   langinfo.string = nl_langinfo (_NL_TIME_WEEK_1STDAY);
 897   week_origin = langinfo.word;
 898   if (week_origin == 19971130) /* Sunday */
 899     week_1stday = 0;
 900   else if (week_origin == 19971201) /* Monday */
 901     week_1stday = 1;
 902   else
 903     g_warning ("Unknown value of _NL_TIME_WEEK_1STDAY.\n");
 904
 905   priv->week_start = (week_1stday + first_weekday - 1) % 7;
 906 #else
 907   /* Translate to calendar:week_start:0 if you want Sunday to be the
 908    * first day of the week to calendar:week_start:1 if you want Monday
 909    * to be the first day of the week, and so on.
 910    */
 911   week_start = _("calendar:week_start:0");
 912
 913   if (strncmp (week_start, "calendar:week_start:", 20) == 0)
 914     priv->week_start = *(week_start + 20) - '0';
 915   else
 916     priv->week_start = -1;
 917
 918   if (priv->week_start < 0 || priv->week_start > 6)
 919     {
 920       g_warning ("Whoever translated calendar:week_start:0 did so wrongly.\n");
 921       priv->week_start = 0;
 922     }
 923 #endif
 924 #endif
 925
 926   calendar_compute_days (calendar);
 927 }
 928
 929 \f
 930 /****************************************
 931  *          Utility Functions           *
 932  ****************************************/
 933
 934 static void
 935 calendar_queue_refresh (GtkCalendar *calendar)
 936 {
 937   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
 938
 939   if (!(priv->detail_func) ||
 940       !(priv->display_flags & GTK_CALENDAR_SHOW_DETAILS) ||
 941        (priv->detail_width_chars && priv->detail_height_rows))
 942     gtk_widget_queue_draw (GTK_WIDGET (calendar));
 943   else
 944     gtk_widget_queue_resize (GTK_WIDGET (calendar));
 945 }
 946
 947 static void
 948 calendar_set_month_next (GtkCalendar *calendar)
 949 {
 950   gint month_len;
 951   GtkCalendarPrivate *priv = calendar->priv;
 952
 953   if (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
 954     return;
 955
 956   if (priv->month == 11)
 957     {
 958       priv->month = 0;
 959       priv->year++;
 960     }
 961   else
 962     priv->month++;
 963
 964   calendar_compute_days (calendar);
 965   g_signal_emit (calendar,
 966                  gtk_calendar_signals[NEXT_MONTH_SIGNAL],
 967                  0);
 968   g_signal_emit (calendar,
 969                  gtk_calendar_signals[MONTH_CHANGED_SIGNAL],
 970                  0);
 971
 972   month_len = month_length[leap (priv->year)][priv->month + 1];
 973
 974   if (month_len < priv->selected_day)
 975     {
 976       priv->selected_day = 0;
 977       gtk_calendar_select_day (calendar, month_len);
 978     }
 979   else
 980     gtk_calendar_select_day (calendar, priv->selected_day);
 981
 982   calendar_queue_refresh (calendar);
 983 }
 984
 985 static void
 986 calendar_set_year_prev (GtkCalendar *calendar)
 987 {
 988   GtkCalendarPrivate *priv = calendar->priv;
 989   gint month_len;
 990
 991   priv->year--;
 992   calendar_compute_days (calendar);
 993   g_signal_emit (calendar,
 994                  gtk_calendar_signals[PREV_YEAR_SIGNAL],
 995                  0);
 996   g_signal_emit (calendar,
 997                  gtk_calendar_signals[MONTH_CHANGED_SIGNAL],
 998                  0);
 999
1000   month_len = month_length[leap (priv->year)][priv->month + 1];
1001
1002   if (month_len < priv->selected_day)
1003     {
1004       priv->selected_day = 0;
1005       gtk_calendar_select_day (calendar, month_len);
1006     }
1007   else
1008     gtk_calendar_select_day (calendar, priv->selected_day);
1009
1010   calendar_queue_refresh (calendar);
1011 }
1012
1013 static void
1014 calendar_set_year_next (GtkCalendar *calendar)
1015 {
1016   GtkCalendarPrivate *priv = calendar->priv;
1017   gint month_len;
1018
1019   priv->year++;
1020   calendar_compute_days (calendar);
1021   g_signal_emit (calendar,
1022                  gtk_calendar_signals[NEXT_YEAR_SIGNAL],
1023                  0);
1024   g_signal_emit (calendar,
1025                  gtk_calendar_signals[MONTH_CHANGED_SIGNAL],
1026                  0);
1027
1028   month_len = month_length[leap (priv->year)][priv->month + 1];
1029
1030   if (month_len < priv->selected_day)
1031     {
1032       priv->selected_day = 0;
1033       gtk_calendar_select_day (calendar, month_len);
1034     }
1035   else
1036     gtk_calendar_select_day (calendar, priv->selected_day);
1037
1038   calendar_queue_refresh (calendar);
1039 }
1040
1041 static void
1042 calendar_compute_days (GtkCalendar *calendar)
1043 {
1044   GtkCalendarPrivate *priv = calendar->priv;
1045   gint month;
1046   gint year;
1047   gint ndays_in_month;
1048   gint ndays_in_prev_month;
1049   gint first_day;
1050   gint row;
1051   gint col;
1052   gint day;
1053
1054   year = priv->year;
1055   month = priv->month + 1;
1056
1057   ndays_in_month = month_length[leap (year)][month];
1058
1059   first_day = day_of_week (year, month, 1);
1060   first_day = (first_day + 7 - priv->week_start) % 7;
1061
1062   /* Compute days of previous month */
1063   if (month > 1)
1064     ndays_in_prev_month = month_length[leap (year)][month-1];
1065   else
1066     ndays_in_prev_month = month_length[leap (year)][12];
1067   day = ndays_in_prev_month - first_day + 1;
1068
1069   row = 0;
1070   if (first_day > 0)
1071     {
1072       for (col = 0; col < first_day; col++)
1073         {
1074           priv->day[row][col] = day;
1075           priv->day_month[row][col] = MONTH_PREV;
1076           day++;
1077         }
1078     }
1079
1080   /* Compute days of current month */
1081   col = first_day;
1082   for (day = 1; day <= ndays_in_month; day++)
1083     {
1084       priv->day[row][col] = day;
1085       priv->day_month[row][col] = MONTH_CURRENT;
1086
1087       col++;
1088       if (col == 7)
1089         {
1090           row++;
1091           col = 0;
1092         }
1093     }
1094
1095   /* Compute days of next month */
1096   day = 1;
1097   for (; row <= 5; row++)
1098     {
1099       for (; col <= 6; col++)
1100         {
1101           priv->day[row][col] = day;
1102           priv->day_month[row][col] = MONTH_NEXT;
1103           day++;
1104         }
1105       col = 0;
1106     }
1107 }
1108
1109 static void
1110 calendar_select_and_focus_day (GtkCalendar *calendar,
1111                                guint        day)
1112 {
1113   GtkCalendarPrivate *priv = calendar->priv;
1114   gint old_focus_row = priv->focus_row;
1115   gint old_focus_col = priv->focus_col;
1116   gint row;
1117   gint col;
1118
1119   for (row = 0; row < 6; row ++)
1120     for (col = 0; col < 7; col++)
1121       {
1122         if (priv->day_month[row][col] == MONTH_CURRENT
1123             && priv->day[row][col] == day)
1124           {
1125             priv->focus_row = row;
1126             priv->focus_col = col;
1127           }
1128       }
1129
1130   if (old_focus_row != -1 && old_focus_col != -1)
1131     calendar_invalidate_day (calendar, old_focus_row, old_focus_col);
1132
1133   gtk_calendar_select_day (calendar, day);
1134 }
1135
1136 \f
1137 /****************************************
1138  *     Layout computation utilities     *
1139  ****************************************/
1140
1141 static gint
1142 calendar_row_height (GtkCalendar *calendar)
1143 {
1144   GtkCalendarPrivate *priv = calendar->priv;
1145
1146   return (GTK_CALENDAR_GET_PRIVATE (calendar)->main_h - CALENDAR_MARGIN
1147           - ((priv->display_flags & GTK_CALENDAR_SHOW_DAY_NAMES)
1148              ? calendar_get_ysep (calendar) : CALENDAR_MARGIN)) / 6;
1149 }
1150
1151
1152 /* calendar_left_x_for_column: returns the x coordinate
1153  * for the left of the column */
1154 static gint
1155 calendar_left_x_for_column (GtkCalendar *calendar,
1156                             gint         column)
1157 {
1158   GtkCalendarPrivate *priv = calendar->priv;
1159   gint width;
1160   gint x_left;
1161   gint week_width;
1162   gint calendar_xsep = calendar_get_xsep (calendar);
1163   GtkStyleContext *context;
1164   GtkStateFlags state;
1165   gint inner_border = calendar_get_inner_border (calendar);
1166   GtkBorder padding;
1167
1168   context = gtk_widget_get_style_context (GTK_WIDGET (calendar));
1169   state = gtk_widget_get_state_flags (GTK_WIDGET (calendar));
1170   gtk_style_context_get_padding (context, state, &padding);
1171
1172   week_width = priv->week_width + padding.left + inner_border;
1173
1174   if (gtk_widget_get_direction (GTK_WIDGET (calendar)) == GTK_TEXT_DIR_RTL)
1175     {
1176       column = 6 - column;
1177       week_width = 0;
1178     }
1179
1180   width = GTK_CALENDAR_GET_PRIVATE (calendar)->day_width;
1181   if (priv->display_flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
1182     x_left = week_width + calendar_xsep + (width + DAY_XSEP) * column;
1183   else
1184     x_left = week_width + CALENDAR_MARGIN + (width + DAY_XSEP) * column;
1185
1186   return x_left;
1187 }
1188
1189 /* column_from_x: returns the column 0-6 that the
1190  * x pixel of the xwindow is in */
1191 static gint
1192 calendar_column_from_x (GtkCalendar *calendar,
1193                         gint         event_x)
1194 {
1195   gint c, column;
1196   gint x_left, x_right;
1197
1198   column = -1;
1199
1200   for (c = 0; c < 7; c++)
1201     {
1202       x_left = calendar_left_x_for_column (calendar, c);
1203       x_right = x_left + GTK_CALENDAR_GET_PRIVATE (calendar)->day_width;
1204
1205       if (event_x >= x_left && event_x < x_right)
1206         {
1207           column = c;
1208           break;
1209         }
1210     }
1211
1212   return column;
1213 }
1214
1215 /* calendar_top_y_for_row: returns the y coordinate
1216  * for the top of the row */
1217 static gint
1218 calendar_top_y_for_row (GtkCalendar *calendar,
1219                         gint         row)
1220 {
1221   GtkStyleContext *context;
1222   GtkAllocation allocation;
1223   gint inner_border = calendar_get_inner_border (calendar);
1224   GtkStateFlags state;
1225   GtkBorder padding;
1226
1227   gtk_widget_get_allocation (GTK_WIDGET (calendar), &allocation);
1228   context = gtk_widget_get_style_context (GTK_WIDGET (calendar));
1229   state = gtk_widget_get_state_flags (GTK_WIDGET (calendar));
1230
1231   gtk_style_context_get_padding (context, state, &padding);
1232
1233   return  allocation.height
1234           - padding.top - inner_border
1235           - (CALENDAR_MARGIN + (6 - row)
1236              * calendar_row_height (calendar));
1237 }
1238
1239 /* row_from_y: returns the row 0-5 that the
1240  * y pixel of the xwindow is in */
1241 static gint
1242 calendar_row_from_y (GtkCalendar *calendar,
1243                      gint         event_y)
1244 {
1245   gint r, row;
1246   gint height;
1247   gint y_top, y_bottom;
1248
1249   height = calendar_row_height (calendar);
1250   row = -1;
1251
1252   for (r = 0; r < 6; r++)
1253     {
1254       y_top = calendar_top_y_for_row (calendar, r);
1255       y_bottom = y_top + height;
1256
1257       if (event_y >= y_top && event_y < y_bottom)
1258         {
1259           row = r;
1260           break;
1261         }
1262     }
1263
1264   return row;
1265 }
1266
1267 static void
1268 calendar_arrow_rectangle (GtkCalendar  *calendar,
1269                           guint         arrow,
1270                           GdkRectangle *rect)
1271 {
1272   GtkWidget *widget = GTK_WIDGET (calendar);
1273   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1274   GtkAllocation allocation;
1275   GtkStyleContext *context;
1276   GtkStateFlags state;
1277   GtkBorder padding;
1278   gboolean year_left;
1279
1280   gtk_widget_get_allocation (widget, &allocation);
1281   context = gtk_widget_get_style_context (widget);
1282   state = gtk_widget_get_state_flags (widget);
1283
1284   gtk_style_context_get_padding (context, state, &padding);
1285
1286   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
1287     year_left = priv->year_before;
1288   else
1289     year_left = !priv->year_before;
1290
1291   rect->y = 3;
1292   rect->width = priv->arrow_width;
1293   rect->height = priv->header_h - 7;
1294
1295   switch (arrow)
1296     {
1297     case ARROW_MONTH_LEFT:
1298       if (year_left)
1299         rect->x = (allocation.width - padding.left - padding.right
1300                    - (3 + 2 * priv->arrow_width + priv->max_month_width));
1301       else
1302         rect->x = 3;
1303       break;
1304     case ARROW_MONTH_RIGHT:
1305       if (year_left)
1306         rect->x = (allocation.width - padding.left - padding.right
1307                    - 3 - priv->arrow_width);
1308       else
1309         rect->x = (priv->arrow_width + priv->max_month_width);
1310       break;
1311     case ARROW_YEAR_LEFT:
1312       if (year_left)
1313         rect->x = 3;
1314       else
1315         rect->x = (allocation.width - padding.left - padding.right
1316                    - (3 + 2 * priv->arrow_width + priv->max_year_width));
1317       break;
1318     case ARROW_YEAR_RIGHT:
1319       if (year_left)
1320         rect->x = (priv->arrow_width + priv->max_year_width);
1321       else
1322         rect->x = (allocation.width - padding.left - padding.right
1323                    - 3 - priv->arrow_width);
1324       break;
1325     }
1326
1327   rect->x += padding.left;
1328   rect->y += padding.top;
1329 }
1330
1331 static void
1332 calendar_day_rectangle (GtkCalendar  *calendar,
1333                         gint          row,
1334                         gint          col,
1335                         GdkRectangle *rect)
1336 {
1337   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1338
1339   rect->x = calendar_left_x_for_column (calendar, col);
1340   rect->y = calendar_top_y_for_row (calendar, row);
1341   rect->height = calendar_row_height (calendar);
1342   rect->width = priv->day_width;
1343 }
1344
1345 static void
1346 calendar_set_month_prev (GtkCalendar *calendar)
1347 {
1348   GtkCalendarPrivate *priv = calendar->priv;
1349   gint month_len;
1350
1351   if (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
1352     return;
1353
1354   if (priv->month == 0)
1355     {
1356       priv->month = 11;
1357       priv->year--;
1358     }
1359   else
1360     priv->month--;
1361
1362   month_len = month_length[leap (priv->year)][priv->month + 1];
1363
1364   calendar_compute_days (calendar);
1365
1366   g_signal_emit (calendar,
1367                  gtk_calendar_signals[PREV_MONTH_SIGNAL],
1368                  0);
1369   g_signal_emit (calendar,
1370                  gtk_calendar_signals[MONTH_CHANGED_SIGNAL],
1371                  0);
1372
1373   if (month_len < priv->selected_day)
1374     {
1375       priv->selected_day = 0;
1376       gtk_calendar_select_day (calendar, month_len);
1377     }
1378   else
1379     {
1380       if (priv->selected_day < 0)
1381         priv->selected_day = priv->selected_day + 1 + month_length[leap (priv->year)][priv->month + 1];
1382       gtk_calendar_select_day (calendar, priv->selected_day);
1383     }
1384
1385   calendar_queue_refresh (calendar);
1386 }
1387
1388 \f
1389 /****************************************
1390  *           Basic object methods       *
1391  ****************************************/
1392
1393 static void
1394 gtk_calendar_finalize (GObject *object)
1395 {
1396   G_OBJECT_CLASS (gtk_calendar_parent_class)->finalize (object);
1397 }
1398
1399 static void
1400 gtk_calendar_destroy (GtkWidget *widget)
1401 {
1402   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1403
1404   calendar_stop_spinning (GTK_CALENDAR (widget));
1405
1406   /* Call the destroy function for the extra display callback: */
1407   if (priv->detail_func_destroy && priv->detail_func_user_data)
1408     {
1409       priv->detail_func_destroy (priv->detail_func_user_data);
1410       priv->detail_func_user_data = NULL;
1411       priv->detail_func_destroy = NULL;
1412     }
1413
1414   GTK_WIDGET_CLASS (gtk_calendar_parent_class)->destroy (widget);
1415 }
1416
1417
1418 static void
1419 calendar_set_display_option (GtkCalendar              *calendar,
1420                              GtkCalendarDisplayOptions flag,
1421                              gboolean                  setting)
1422 {
1423   GtkCalendarPrivate *priv = calendar->priv;
1424   GtkCalendarDisplayOptions flags;
1425
1426   if (setting)
1427     flags = priv->display_flags | flag;
1428   else
1429     flags = priv->display_flags & ~flag;
1430   gtk_calendar_set_display_options (calendar, flags);
1431 }
1432
1433 static gboolean
1434 calendar_get_display_option (GtkCalendar              *calendar,
1435                              GtkCalendarDisplayOptions flag)
1436 {
1437   GtkCalendarPrivate *priv = calendar->priv;
1438
1439   return (priv->display_flags & flag) != 0;
1440 }
1441
1442 static void
1443 gtk_calendar_set_property (GObject      *object,
1444                            guint         prop_id,
1445                            const GValue *value,
1446                            GParamSpec   *pspec)
1447 {
1448   GtkCalendar *calendar = GTK_CALENDAR (object);
1449   GtkCalendarPrivate *priv = calendar->priv;
1450
1451   switch (prop_id)
1452     {
1453     case PROP_YEAR:
1454       gtk_calendar_select_month (calendar,
1455                                  priv->month,
1456                                  g_value_get_int (value));
1457       break;
1458     case PROP_MONTH:
1459       gtk_calendar_select_month (calendar,
1460                                  g_value_get_int (value),
1461                                  priv->year);
1462       break;
1463     case PROP_DAY:
1464       gtk_calendar_select_day (calendar,
1465                                g_value_get_int (value));
1466       break;
1467     case PROP_SHOW_HEADING:
1468       calendar_set_display_option (calendar,
1469                                    GTK_CALENDAR_SHOW_HEADING,
1470                                    g_value_get_boolean (value));
1471       break;
1472     case PROP_SHOW_DAY_NAMES:
1473       calendar_set_display_option (calendar,
1474                                    GTK_CALENDAR_SHOW_DAY_NAMES,
1475                                    g_value_get_boolean (value));
1476       break;
1477     case PROP_NO_MONTH_CHANGE:
1478       calendar_set_display_option (calendar,
1479                                    GTK_CALENDAR_NO_MONTH_CHANGE,
1480                                    g_value_get_boolean (value));
1481       break;
1482     case PROP_SHOW_WEEK_NUMBERS:
1483       calendar_set_display_option (calendar,
1484                                    GTK_CALENDAR_SHOW_WEEK_NUMBERS,
1485                                    g_value_get_boolean (value));
1486       break;
1487     case PROP_SHOW_DETAILS:
1488       calendar_set_display_option (calendar,
1489                                    GTK_CALENDAR_SHOW_DETAILS,
1490                                    g_value_get_boolean (value));
1491       break;
1492     case PROP_DETAIL_WIDTH_CHARS:
1493       gtk_calendar_set_detail_width_chars (calendar,
1494                                            g_value_get_int (value));
1495       break;
1496     case PROP_DETAIL_HEIGHT_ROWS:
1497       gtk_calendar_set_detail_height_rows (calendar,
1498                                            g_value_get_int (value));
1499       break;
1500     default:
1501       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1502       break;
1503     }
1504 }
1505
1506 static void
1507 gtk_calendar_get_property (GObject      *object,
1508                            guint         prop_id,
1509                            GValue       *value,
1510                            GParamSpec   *pspec)
1511 {
1512   GtkCalendar *calendar = GTK_CALENDAR (object);
1513   GtkCalendarPrivate *priv = calendar->priv;
1514
1515   switch (prop_id)
1516     {
1517     case PROP_YEAR:
1518       g_value_set_int (value, priv->year);
1519       break;
1520     case PROP_MONTH:
1521       g_value_set_int (value, priv->month);
1522       break;
1523     case PROP_DAY:
1524       g_value_set_int (value, priv->selected_day);
1525       break;
1526     case PROP_SHOW_HEADING:
1527       g_value_set_boolean (value, calendar_get_display_option (calendar,
1528                                                                GTK_CALENDAR_SHOW_HEADING));
1529       break;
1530     case PROP_SHOW_DAY_NAMES:
1531       g_value_set_boolean (value, calendar_get_display_option (calendar,
1532                                                                GTK_CALENDAR_SHOW_DAY_NAMES));
1533       break;
1534     case PROP_NO_MONTH_CHANGE:
1535       g_value_set_boolean (value, calendar_get_display_option (calendar,
1536                                                                GTK_CALENDAR_NO_MONTH_CHANGE));
1537       break;
1538     case PROP_SHOW_WEEK_NUMBERS:
1539       g_value_set_boolean (value, calendar_get_display_option (calendar,
1540                                                                GTK_CALENDAR_SHOW_WEEK_NUMBERS));
1541       break;
1542     case PROP_SHOW_DETAILS:
1543       g_value_set_boolean (value, calendar_get_display_option (calendar,
1544                                                                GTK_CALENDAR_SHOW_DETAILS));
1545       break;
1546     case PROP_DETAIL_WIDTH_CHARS:
1547       g_value_set_int (value, priv->detail_width_chars);
1548       break;
1549     case PROP_DETAIL_HEIGHT_ROWS:
1550       g_value_set_int (value, priv->detail_height_rows);
1551       break;
1552     default:
1553       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1554       break;
1555     }
1556 }
1557
1558 \f
1559 /****************************************
1560  *             Realization              *
1561  ****************************************/
1562
1563 static void
1564 calendar_realize_arrows (GtkCalendar *calendar)
1565 {
1566   GtkWidget *widget = GTK_WIDGET (calendar);
1567   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1568   GdkWindowAttr attributes;
1569   gint attributes_mask;
1570   gint i;
1571   GtkAllocation allocation;
1572
1573   if (! (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
1574       && (priv->display_flags & GTK_CALENDAR_SHOW_HEADING))
1575     {
1576       gtk_widget_get_allocation (widget, &allocation);
1577
1578       attributes.wclass = GDK_INPUT_ONLY;
1579       attributes.window_type = GDK_WINDOW_CHILD;
1580       attributes.event_mask = (gtk_widget_get_events (widget)
1581                                | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
1582                                | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
1583       attributes_mask = GDK_WA_X | GDK_WA_Y;
1584       for (i = 0; i < 4; i++)
1585         {
1586           GdkRectangle rect;
1587           calendar_arrow_rectangle (calendar, i, &rect);
1588
1589           attributes.x = allocation.x + rect.x;
1590           attributes.y = allocation.y + rect.y;
1591           attributes.width = rect.width;
1592           attributes.height = rect.height;
1593           priv->arrow_win[i] = gdk_window_new (gtk_widget_get_window (widget),
1594                                                &attributes,
1595                                                attributes_mask);
1596
1597           if (!gtk_widget_is_sensitive (widget))
1598             priv->arrow_state[i] = GTK_STATE_FLAG_INSENSITIVE;
1599
1600           gdk_window_set_user_data (priv->arrow_win[i], widget);
1601         }
1602     }
1603   else
1604     {
1605       for (i = 0; i < 4; i++)
1606         priv->arrow_win[i] = NULL;
1607     }
1608 }
1609
1610 static void
1611 calendar_unrealize_arrows (GtkCalendar *calendar)
1612 {
1613   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1614   gint i;
1615
1616   for (i = 0; i < 4; i++)
1617     {
1618       if (priv->arrow_win[i])
1619         {
1620           gdk_window_set_user_data (priv->arrow_win[i], NULL);
1621           gdk_window_destroy (priv->arrow_win[i]);
1622           priv->arrow_win[i] = NULL;
1623         }
1624     }
1625
1626 }
1627
1628 static gint
1629 calendar_get_inner_border (GtkCalendar *calendar)
1630 {
1631   gint inner_border;
1632
1633   gtk_widget_style_get (GTK_WIDGET (calendar),
1634                         "inner-border", &inner_border,
1635                         NULL);
1636
1637   return inner_border;
1638 }
1639
1640 static gint
1641 calendar_get_xsep (GtkCalendar *calendar)
1642 {
1643   gint xsep;
1644
1645   gtk_widget_style_get (GTK_WIDGET (calendar),
1646                         "horizontal-separation", &xsep,
1647                         NULL);
1648
1649   return xsep;
1650 }
1651
1652 static gint
1653 calendar_get_ysep (GtkCalendar *calendar)
1654 {
1655   gint ysep;
1656
1657   gtk_widget_style_get (GTK_WIDGET (calendar),
1658                         "vertical-separation", &ysep,
1659                         NULL);
1660
1661   return ysep;
1662 }
1663
1664 static void
1665 gtk_calendar_realize (GtkWidget *widget)
1666 {
1667   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1668   GdkWindowAttr attributes;
1669   gint attributes_mask;
1670   gint inner_border = calendar_get_inner_border (GTK_CALENDAR (widget));
1671   GtkStyleContext *context;
1672   GtkAllocation allocation;
1673   GtkStateFlags state = 0;
1674   GtkBorder padding;
1675
1676   context = gtk_widget_get_style_context (widget);
1677   state = gtk_widget_get_state_flags (widget);
1678   gtk_style_context_get_padding (context, state, &padding);
1679
1680   gtk_widget_get_allocation (widget, &allocation);
1681
1682   GTK_WIDGET_CLASS (gtk_calendar_parent_class)->realize (widget);
1683
1684   attributes.wclass = GDK_INPUT_ONLY;
1685   attributes.window_type = GDK_WINDOW_CHILD;
1686   attributes.event_mask = (gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK
1687                            | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
1688                            | GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK);
1689
1690   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
1691     attributes.x = priv->week_width + padding.left + inner_border;
1692   else
1693     attributes.x = padding.left + inner_border;
1694
1695   attributes.y = priv->header_h + priv->day_name_h + padding.top + inner_border;
1696   attributes.width = allocation.width - attributes.x - (padding.right + inner_border);
1697
1698   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
1699     attributes.width -= priv->week_width;
1700
1701   attributes.height = priv->main_h;
1702   attributes_mask = GDK_WA_X | GDK_WA_Y;
1703
1704   attributes.x += allocation.x;
1705   attributes.y += allocation.y;
1706
1707   priv->main_win = gdk_window_new (gtk_widget_get_window (widget),
1708                                    &attributes, attributes_mask);
1709   gdk_window_set_user_data (priv->main_win, widget);
1710
1711   calendar_realize_arrows (GTK_CALENDAR (widget));
1712 }
1713
1714 static void
1715 gtk_calendar_unrealize (GtkWidget *widget)
1716 {
1717   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1718
1719   calendar_unrealize_arrows (GTK_CALENDAR (widget));
1720
1721   if (priv->main_win)
1722     {
1723       gdk_window_set_user_data (priv->main_win, NULL);
1724       gdk_window_destroy (priv->main_win);
1725       priv->main_win = NULL;
1726     }
1727
1728   GTK_WIDGET_CLASS (gtk_calendar_parent_class)->unrealize (widget);
1729 }
1730
1731 static void
1732 calendar_map_arrows (GtkCalendar *calendar)
1733 {
1734   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1735   gint i;
1736
1737   for (i = 0; i < 4; i++)
1738     {
1739       if (priv->arrow_win[i])
1740         gdk_window_show (priv->arrow_win[i]);
1741     }
1742 }
1743
1744 static void
1745 calendar_unmap_arrows (GtkCalendar *calendar)
1746 {
1747   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1748   gint i;
1749
1750   for (i = 0; i < 4; i++)
1751     {
1752       if (priv->arrow_win[i])
1753         gdk_window_hide (priv->arrow_win[i]);
1754     }
1755 }
1756
1757 static void
1758 gtk_calendar_map (GtkWidget *widget)
1759 {
1760   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1761
1762   GTK_WIDGET_CLASS (gtk_calendar_parent_class)->map (widget);
1763
1764   gdk_window_show (priv->main_win);
1765
1766   calendar_map_arrows (GTK_CALENDAR (widget));
1767 }
1768
1769 static void
1770 gtk_calendar_unmap (GtkWidget *widget)
1771 {
1772   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1773
1774   calendar_unmap_arrows (GTK_CALENDAR (widget));
1775
1776   gdk_window_hide (priv->main_win);
1777
1778   GTK_WIDGET_CLASS (gtk_calendar_parent_class)->unmap (widget);
1779 }
1780
1781 static gchar*
1782 gtk_calendar_get_detail (GtkCalendar *calendar,
1783                          gint         row,
1784                          gint         column)
1785 {
1786   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
1787   gint year, month;
1788
1789   if (priv->detail_func == NULL)
1790     return NULL;
1791
1792   year = priv->year;
1793   month = priv->month + priv->day_month[row][column] - MONTH_CURRENT;
1794
1795   if (month < 0)
1796     {
1797       month += 12;
1798       year -= 1;
1799     }
1800   else if (month > 11)
1801     {
1802       month -= 12;
1803       year += 1;
1804     }
1805
1806   return priv->detail_func (calendar,
1807                             year, month,
1808                             priv->day[row][column],
1809                             priv->detail_func_user_data);
1810 }
1811
1812 static gboolean
1813 gtk_calendar_query_tooltip (GtkWidget  *widget,
1814                             gint        x,
1815                             gint        y,
1816                             gboolean    keyboard_mode,
1817                             GtkTooltip *tooltip)
1818 {
1819   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1820   GtkCalendar *calendar = GTK_CALENDAR (widget);
1821   gchar *detail = NULL;
1822   GdkRectangle day_rect;
1823   gint row, col;
1824
1825   col = calendar_column_from_x (calendar, x);
1826   row = calendar_row_from_y (calendar, y);
1827
1828   if (col != -1 && row != -1 &&
1829       (0 != (priv->detail_overflow[row] & (1 << col)) ||
1830       0 == (priv->display_flags & GTK_CALENDAR_SHOW_DETAILS)))
1831     {
1832       detail = gtk_calendar_get_detail (calendar, row, col);
1833       calendar_day_rectangle (calendar, row, col, &day_rect);
1834     }
1835
1836   if (detail)
1837     {
1838       gtk_tooltip_set_tip_area (tooltip, &day_rect);
1839       gtk_tooltip_set_markup (tooltip, detail);
1840
1841       g_free (detail);
1842
1843       return TRUE;
1844     }
1845
1846   if (GTK_WIDGET_CLASS (gtk_calendar_parent_class)->query_tooltip)
1847     return GTK_WIDGET_CLASS (gtk_calendar_parent_class)->query_tooltip (widget, x, y, keyboard_mode, tooltip);
1848
1849   return FALSE;
1850 }
1851
1852 \f
1853 /****************************************
1854  *       Size Request and Allocate      *
1855  ****************************************/
1856
1857 static void
1858 gtk_calendar_size_request (GtkWidget      *widget,
1859                            GtkRequisition *requisition)
1860 {
1861   GtkCalendar *calendar = GTK_CALENDAR (widget);
1862   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
1863   GtkStyleContext *context;
1864   GtkStateFlags state;
1865   GtkBorder padding;
1866   PangoLayout *layout;
1867   PangoRectangle logical_rect;
1868
1869   gint height;
1870   gint i, r, c;
1871   gint calendar_margin = CALENDAR_MARGIN;
1872   gint header_width, main_width;
1873   gint max_header_height = 0;
1874   gint focus_width;
1875   gint focus_padding;
1876   gint max_detail_height;
1877   gint inner_border = calendar_get_inner_border (calendar);
1878   gint calendar_ysep = calendar_get_ysep (calendar);
1879   gint calendar_xsep = calendar_get_xsep (calendar);
1880
1881   gtk_widget_style_get (GTK_WIDGET (widget),
1882                         "focus-line-width", &focus_width,
1883                         "focus-padding", &focus_padding,
1884                         NULL);
1885
1886   layout = gtk_widget_create_pango_layout (widget, NULL);
1887
1888   /*
1889    * Calculate the requisition  width for the widget.
1890    */
1891
1892   /* Header width */
1893
1894   if (priv->display_flags & GTK_CALENDAR_SHOW_HEADING)
1895     {
1896       priv->max_month_width = 0;
1897       for (i = 0; i < 12; i++)
1898         {
1899           pango_layout_set_text (layout, default_monthname[i], -1);
1900           pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1901           priv->max_month_width = MAX (priv->max_month_width,
1902                                                logical_rect.width + 8);
1903           max_header_height = MAX (max_header_height, logical_rect.height);
1904         }
1905
1906       priv->max_year_width = 0;
1907       /* Translators:  This is a text measurement template.
1908        * Translate it to the widest year text
1909        *
1910        * If you don't understand this, leave it as "2000"
1911        */
1912       pango_layout_set_text (layout, C_("year measurement template", "2000"), -1);
1913       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1914       priv->max_year_width = MAX (priv->max_year_width,
1915                                   logical_rect.width + 8);
1916       max_header_height = MAX (max_header_height, logical_rect.height);
1917     }
1918   else
1919     {
1920       priv->max_month_width = 0;
1921       priv->max_year_width = 0;
1922     }
1923
1924   if (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
1925     header_width = (priv->max_month_width
1926                     + priv->max_year_width
1927                     + 3 * 3);
1928   else
1929     header_width = (priv->max_month_width
1930                     + priv->max_year_width
1931                     + 4 * priv->arrow_width + 3 * 3);
1932
1933   /* Mainwindow labels width */
1934
1935   priv->max_day_char_width = 0;
1936   priv->max_day_char_ascent = 0;
1937   priv->max_day_char_descent = 0;
1938   priv->min_day_width = 0;
1939
1940   for (i = 0; i < 9; i++)
1941     {
1942       gchar buffer[32];
1943       g_snprintf (buffer, sizeof (buffer), C_("calendar:day:digits", "%d"), i * 11);
1944       pango_layout_set_text (layout, buffer, -1);
1945       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1946       priv->min_day_width = MAX (priv->min_day_width,
1947                                          logical_rect.width);
1948
1949       priv->max_day_char_ascent = MAX (priv->max_day_char_ascent,
1950                                                PANGO_ASCENT (logical_rect));
1951       priv->max_day_char_descent = MAX (priv->max_day_char_descent,
1952                                                 PANGO_DESCENT (logical_rect));
1953     }
1954
1955   priv->max_label_char_ascent = 0;
1956   priv->max_label_char_descent = 0;
1957   if (priv->display_flags & GTK_CALENDAR_SHOW_DAY_NAMES)
1958     for (i = 0; i < 7; i++)
1959       {
1960         pango_layout_set_text (layout, default_abbreviated_dayname[i], -1);
1961         pango_layout_line_get_pixel_extents (pango_layout_get_lines_readonly (layout)->data, NULL, &logical_rect);
1962
1963         priv->min_day_width = MAX (priv->min_day_width, logical_rect.width);
1964         priv->max_label_char_ascent = MAX (priv->max_label_char_ascent,
1965                                                    PANGO_ASCENT (logical_rect));
1966         priv->max_label_char_descent = MAX (priv->max_label_char_descent,
1967                                                     PANGO_DESCENT (logical_rect));
1968       }
1969
1970   priv->max_week_char_width = 0;
1971   if (priv->display_flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
1972     for (i = 0; i < 9; i++)
1973       {
1974         gchar buffer[32];
1975         g_snprintf (buffer, sizeof (buffer), C_("calendar:week:digits", "%d"), i * 11);
1976         pango_layout_set_text (layout, buffer, -1);
1977         pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
1978         priv->max_week_char_width = MAX (priv->max_week_char_width,
1979                                            logical_rect.width / 2);
1980       }
1981
1982   /* Calculate detail extents. Do this as late as possible since
1983    * pango_layout_set_markup is called which alters font settings. */
1984   max_detail_height = 0;
1985
1986   if (priv->detail_func && (priv->display_flags & GTK_CALENDAR_SHOW_DETAILS))
1987     {
1988       gchar *markup, *tail;
1989
1990       if (priv->detail_width_chars || priv->detail_height_rows)
1991         {
1992           gint rows = MAX (1, priv->detail_height_rows) - 1;
1993           gsize len = priv->detail_width_chars + rows + 16;
1994
1995           markup = tail = g_alloca (len);
1996
1997           memcpy (tail,     "<small>", 7);
1998           tail += 7;
1999
2000           memset (tail, 'm', priv->detail_width_chars);
2001           tail += priv->detail_width_chars;
2002
2003           memset (tail, '\n', rows);
2004           tail += rows;
2005
2006           memcpy (tail,     "</small>", 9);
2007           tail += 9;
2008
2009           g_assert (len == (tail - markup));
2010
2011           pango_layout_set_markup (layout, markup, -1);
2012           pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2013
2014           if (priv->detail_width_chars)
2015             priv->min_day_width = MAX (priv->min_day_width, logical_rect.width);
2016           if (priv->detail_height_rows)
2017             max_detail_height = MAX (max_detail_height, logical_rect.height);
2018         }
2019
2020       if (!priv->detail_width_chars || !priv->detail_height_rows)
2021         for (r = 0; r < 6; r++)
2022           for (c = 0; c < 7; c++)
2023             {
2024               gchar *detail = gtk_calendar_get_detail (calendar, r, c);
2025
2026               if (detail)
2027                 {
2028                   markup = g_strconcat ("<small>", detail, "</small>", NULL);
2029                   pango_layout_set_markup (layout, markup, -1);
2030
2031                   if (priv->detail_width_chars)
2032                     {
2033                       pango_layout_set_wrap (layout, PANGO_WRAP_WORD_CHAR);
2034                       pango_layout_set_width (layout, PANGO_SCALE * priv->min_day_width);
2035                     }
2036
2037                   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2038
2039                   if (!priv->detail_width_chars)
2040                     priv->min_day_width = MAX (priv->min_day_width, logical_rect.width);
2041                   if (!priv->detail_height_rows)
2042                     max_detail_height = MAX (max_detail_height, logical_rect.height);
2043
2044                   g_free (markup);
2045                   g_free (detail);
2046                 }
2047             }
2048     }
2049
2050   /* We add one to max_day_char_width to be able to make the marked day "bold" */
2051   priv->max_day_char_width = priv->min_day_width / 2 + 1;
2052
2053   main_width = (7 * (priv->min_day_width + (focus_padding + focus_width) * 2) + (DAY_XSEP * 6) + CALENDAR_MARGIN * 2
2054                 + (priv->max_week_char_width
2055                    ? priv->max_week_char_width * 2 + (focus_padding + focus_width) * 2 + calendar_xsep * 2
2056                    : 0));
2057
2058   context = gtk_widget_get_style_context (widget);
2059   state = gtk_widget_get_state_flags (widget);
2060   gtk_style_context_get_padding (context, state, &padding);
2061
2062   requisition->width = MAX (header_width, main_width + inner_border * 2) + padding.left + padding.right;
2063
2064   /*
2065    * Calculate the requisition height for the widget.
2066    */
2067
2068   if (priv->display_flags & GTK_CALENDAR_SHOW_HEADING)
2069     {
2070       priv->header_h = (max_header_height + calendar_ysep * 2);
2071     }
2072   else
2073     {
2074       priv->header_h = 0;
2075     }
2076
2077   if (priv->display_flags & GTK_CALENDAR_SHOW_DAY_NAMES)
2078     {
2079       priv->day_name_h = (priv->max_label_char_ascent
2080                                   + priv->max_label_char_descent
2081                                   + 2 * (focus_padding + focus_width) + calendar_margin);
2082       calendar_margin = calendar_ysep;
2083     }
2084   else
2085     {
2086       priv->day_name_h = 0;
2087     }
2088
2089   priv->main_h = (CALENDAR_MARGIN + calendar_margin
2090                           + 6 * (priv->max_day_char_ascent
2091                                  + priv->max_day_char_descent
2092                                  + max_detail_height
2093                                  + 2 * (focus_padding + focus_width))
2094                           + DAY_YSEP * 5);
2095
2096   height = priv->header_h + priv->day_name_h + priv->main_h;
2097
2098   requisition->height = height + padding.top + padding.bottom + (inner_border * 2);
2099
2100   g_object_unref (layout);
2101 }
2102
2103 static void
2104 gtk_calendar_get_preferred_width (GtkWidget *widget,
2105                                   gint      *minimum,
2106                                   gint      *natural)
2107 {
2108   GtkRequisition requisition;
2109
2110   gtk_calendar_size_request (widget, &requisition);
2111
2112   *minimum = *natural = requisition.width;
2113 }
2114
2115 static void
2116 gtk_calendar_get_preferred_height (GtkWidget *widget,
2117                                    gint      *minimum,
2118                                    gint      *natural)
2119 {
2120   GtkRequisition requisition;
2121
2122   gtk_calendar_size_request (widget, &requisition);
2123
2124   *minimum = *natural = requisition.height;
2125 }
2126
2127 static void
2128 gtk_calendar_size_allocate (GtkWidget     *widget,
2129                             GtkAllocation *allocation)
2130 {
2131   GtkCalendar *calendar = GTK_CALENDAR (widget);
2132   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
2133   GtkStyleContext *context;
2134   GtkStateFlags state;
2135   GtkBorder padding;
2136   guint i;
2137   gint inner_border = calendar_get_inner_border (calendar);
2138   gint calendar_xsep = calendar_get_xsep (calendar);
2139
2140   context = gtk_widget_get_style_context (widget);
2141   state = gtk_widget_get_state_flags (widget);
2142   gtk_style_context_get_padding (context, state, &padding);
2143
2144   gtk_widget_set_allocation (widget, allocation);
2145
2146   if (priv->display_flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
2147     {
2148       priv->day_width = (priv->min_day_width
2149                          * ((allocation->width - (inner_border * 2) - padding.left - padding.right
2150                              - (CALENDAR_MARGIN * 2) -  (DAY_XSEP * 6) - calendar_xsep * 2))
2151                          / (7 * priv->min_day_width + priv->max_week_char_width * 2));
2152       priv->week_width = ((allocation->width - (inner_border * 2) - padding.left - padding.right
2153                            - (CALENDAR_MARGIN * 2) - (DAY_XSEP * 6) - calendar_xsep * 2 )
2154                           - priv->day_width * 7 + CALENDAR_MARGIN + calendar_xsep);
2155     }
2156   else
2157     {
2158       priv->day_width = (allocation->width
2159                          - (inner_border * 2)
2160                          - padding.left - padding.right
2161                          - (CALENDAR_MARGIN * 2)
2162                          - (DAY_XSEP * 6))/7;
2163       priv->week_width = 0;
2164     }
2165
2166   if (gtk_widget_get_realized (widget))
2167     {
2168       if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
2169         gdk_window_move_resize (priv->main_win,
2170                                 allocation->x
2171                                  + priv->week_width + padding.left + inner_border,
2172                                 allocation->y
2173                                  + priv->header_h + priv->day_name_h
2174                                  + (padding.top + inner_border),
2175                                 allocation->width - priv->week_width
2176                                 - (inner_border * 2) - padding.left - padding.right,
2177                                 priv->main_h);
2178       else
2179         gdk_window_move_resize (priv->main_win,
2180                                 allocation->x
2181                                  + padding.left + inner_border,
2182                                 allocation->y
2183                                  + priv->header_h + priv->day_name_h
2184                                  + padding.top + inner_border,
2185                                 allocation->width - priv->week_width
2186                                 - (inner_border * 2) - padding.left - padding.right,
2187                                 priv->main_h);
2188
2189       for (i = 0 ; i < 4 ; i++)
2190         {
2191           if (priv->arrow_win[i])
2192             {
2193               GdkRectangle rect;
2194               calendar_arrow_rectangle (calendar, i, &rect);
2195
2196               gdk_window_move_resize (priv->arrow_win[i],
2197                                       allocation->x + rect.x,
2198                                       allocation->y + rect.y,
2199                                       rect.width, rect.height);
2200             }
2201         }
2202     }
2203 }
2204
2205 \f
2206 /****************************************
2207  *              Repainting              *
2208  ****************************************/
2209
2210 static void
2211 calendar_paint_header (GtkCalendar *calendar, cairo_t *cr)
2212 {
2213   GtkWidget *widget = GTK_WIDGET (calendar);
2214   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2215   GtkAllocation allocation;
2216   GtkStyleContext *context;
2217   GtkStateFlags state;
2218   GtkBorder padding;
2219   char buffer[255];
2220   gint x, y;
2221   gint header_width;
2222   gint max_month_width;
2223   gint max_year_width;
2224   PangoLayout *layout;
2225   PangoRectangle logical_rect;
2226   gboolean year_left;
2227   time_t tmp_time;
2228   struct tm *tm;
2229   gchar *str;
2230
2231   context = gtk_widget_get_style_context (widget);
2232   state = gtk_widget_get_state_flags (widget);
2233   gtk_style_context_get_padding (context, state, &padding);
2234
2235   cairo_save (cr);
2236   cairo_translate (cr, padding.left, padding.top);
2237
2238   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
2239     year_left = priv->year_before;
2240   else
2241     year_left = !priv->year_before;
2242
2243   gtk_widget_get_allocation (widget, &allocation);
2244
2245   header_width = allocation.width - padding.left - padding.right;
2246
2247   max_month_width = priv->max_month_width;
2248   max_year_width = priv->max_year_width;
2249
2250   gtk_style_context_save (context);
2251   gtk_style_context_add_class (context, GTK_STYLE_CLASS_HEADER);
2252
2253   gtk_render_background (context, cr, 0, 0, header_width, priv->header_h);
2254   gtk_render_frame (context, cr, 0, 0, header_width, priv->header_h);
2255
2256   tmp_time = 1;  /* Jan 1 1970, 00:00:01 UTC */
2257   tm = gmtime (&tmp_time);
2258   tm->tm_year = priv->year - 1900;
2259
2260   /* Translators: This dictates how the year is displayed in
2261    * gtkcalendar widget.  See strftime() manual for the format.
2262    * Use only ASCII in the translation.
2263    *
2264    * Also look for the msgid "2000".
2265    * Translate that entry to a year with the widest output of this
2266    * msgid.
2267    *
2268    * "%Y" is appropriate for most locales.
2269    */
2270   strftime (buffer, sizeof (buffer), C_("calendar year format", "%Y"), tm);
2271   str = g_locale_to_utf8 (buffer, -1, NULL, NULL, NULL);
2272   layout = gtk_widget_create_pango_layout (widget, str);
2273   g_free (str);
2274
2275   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2276
2277   /* Draw title */
2278   y = (priv->header_h - logical_rect.height) / 2;
2279
2280   /* Draw year and its arrows */
2281
2282   if (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
2283     if (year_left)
2284       x = 3 + (max_year_width - logical_rect.width)/2;
2285     else
2286       x = header_width - (3 + max_year_width
2287                           - (max_year_width - logical_rect.width)/2);
2288   else
2289     if (year_left)
2290       x = 3 + priv->arrow_width + (max_year_width - logical_rect.width)/2;
2291     else
2292       x = header_width - (3 + priv->arrow_width + max_year_width
2293                           - (max_year_width - logical_rect.width)/2);
2294
2295   gtk_render_layout (context, cr, x, y, layout);
2296
2297   /* Draw month */
2298   g_snprintf (buffer, sizeof (buffer), "%s", default_monthname[priv->month]);
2299   pango_layout_set_text (layout, buffer, -1);
2300   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2301
2302   if (priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
2303     if (year_left)
2304       x = header_width - (3 + max_month_width
2305                           - (max_month_width - logical_rect.width)/2);
2306     else
2307     x = 3 + (max_month_width - logical_rect.width) / 2;
2308   else
2309     if (year_left)
2310       x = header_width - (3 + priv->arrow_width + max_month_width
2311                           - (max_month_width - logical_rect.width)/2);
2312     else
2313     x = 3 + priv->arrow_width + (max_month_width - logical_rect.width)/2;
2314
2315   gtk_render_layout (context, cr, x, y, layout);
2316   g_object_unref (layout);
2317
2318   gtk_style_context_restore (context);
2319   cairo_restore (cr);
2320 }
2321
2322 static void
2323 calendar_paint_day_names (GtkCalendar *calendar,
2324                           cairo_t     *cr)
2325 {
2326   GtkWidget *widget = GTK_WIDGET (calendar);
2327   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2328   GtkStyleContext *context;
2329   GtkStateFlags state;
2330   GtkBorder padding;
2331   GtkAllocation allocation;
2332   char buffer[255];
2333   int day,i;
2334   int day_width, cal_width;
2335   int day_wid_sep;
2336   PangoLayout *layout;
2337   PangoRectangle logical_rect;
2338   gint focus_padding;
2339   gint focus_width;
2340   gint calendar_ysep = calendar_get_ysep (calendar);
2341   gint calendar_xsep = calendar_get_xsep (calendar);
2342   gint inner_border = calendar_get_inner_border (calendar);
2343
2344   context = gtk_widget_get_style_context (widget);
2345   state = gtk_widget_get_state_flags (widget);
2346   gtk_style_context_get_padding (context, state, &padding);
2347
2348   cairo_save (cr);
2349
2350   cairo_translate (cr,
2351                    padding.left + inner_border,
2352                    priv->header_h + padding.top + inner_border);
2353
2354   gtk_widget_style_get (GTK_WIDGET (widget),
2355                         "focus-line-width", &focus_width,
2356                         "focus-padding", &focus_padding,
2357                         NULL);
2358
2359   gtk_widget_get_allocation (widget, &allocation);
2360
2361   day_width = priv->day_width;
2362   cal_width = allocation.width - (inner_border * 2) - padding.left - padding.right;
2363   day_wid_sep = day_width + DAY_XSEP;
2364
2365   /*
2366    * Draw rectangles as inverted background for the labels.
2367    */
2368
2369   gtk_style_context_save (context);
2370   gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT);
2371
2372   gtk_render_background (context, cr,
2373                          CALENDAR_MARGIN, CALENDAR_MARGIN,
2374                          cal_width - CALENDAR_MARGIN * 2,
2375                          priv->day_name_h - CALENDAR_MARGIN);
2376
2377   if (priv->display_flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
2378     gtk_render_background (context, cr,
2379                            CALENDAR_MARGIN,
2380                            priv->day_name_h - calendar_ysep,
2381                            priv->week_width - calendar_ysep - CALENDAR_MARGIN,
2382                            calendar_ysep);
2383
2384   /*
2385    * Write the labels
2386    */
2387   layout = gtk_widget_create_pango_layout (widget, NULL);
2388
2389   for (i = 0; i < 7; i++)
2390     {
2391       if (gtk_widget_get_direction (GTK_WIDGET (calendar)) == GTK_TEXT_DIR_RTL)
2392         day = 6 - i;
2393       else
2394         day = i;
2395       day = (day + priv->week_start) % 7;
2396       g_snprintf (buffer, sizeof (buffer), "%s", default_abbreviated_dayname[day]);
2397
2398       pango_layout_set_text (layout, buffer, -1);
2399       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2400
2401       gtk_render_layout (context, cr,
2402                          (CALENDAR_MARGIN +
2403                           + (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
2404                              (priv->week_width + (priv->week_width ? calendar_xsep : 0))
2405                              : 0)
2406                           + day_wid_sep * i
2407                           + (day_width - logical_rect.width)/2),
2408                          CALENDAR_MARGIN + focus_width + focus_padding + logical_rect.y,
2409                          layout);
2410     }
2411
2412   g_object_unref (layout);
2413
2414   gtk_style_context_restore (context);
2415   cairo_restore (cr);
2416 }
2417
2418 static void
2419 calendar_paint_week_numbers (GtkCalendar *calendar,
2420                              cairo_t     *cr)
2421 {
2422   GtkWidget *widget = GTK_WIDGET (calendar);
2423   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2424   GtkStyleContext *context;
2425   GtkStateFlags state;
2426   GtkBorder padding;
2427   guint week = 0, year;
2428   gint row, x_loc, y_loc;
2429   gint day_height;
2430   char buffer[32];
2431   PangoLayout *layout;
2432   PangoRectangle logical_rect;
2433   gint focus_padding;
2434   gint focus_width;
2435   gint calendar_xsep = calendar_get_xsep (calendar);
2436   gint inner_border = calendar_get_inner_border (calendar);
2437   gint x, y;
2438
2439   context = gtk_widget_get_style_context (widget);
2440   state = gtk_widget_get_state_flags (widget);
2441   gtk_style_context_get_padding (context, state, &padding);
2442
2443   cairo_save (cr);
2444
2445   y = priv->header_h + priv->day_name_h + (padding.top + inner_border);
2446   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
2447     x = padding.left + inner_border;
2448   else
2449     x = gtk_widget_get_allocated_width (widget) - priv->week_width - (padding.right + inner_border);
2450
2451   gtk_widget_style_get (GTK_WIDGET (widget),
2452                         "focus-line-width", &focus_width,
2453                         "focus-padding", &focus_padding,
2454                         NULL);
2455
2456   gtk_style_context_save (context);
2457   gtk_style_context_add_class (context, GTK_STYLE_CLASS_HIGHLIGHT);
2458
2459   if (priv->display_flags & GTK_CALENDAR_SHOW_DAY_NAMES)
2460     gtk_render_background (context, cr,
2461                            x + CALENDAR_MARGIN, y,
2462                            priv->week_width - CALENDAR_MARGIN,
2463                            priv->main_h - CALENDAR_MARGIN);
2464   else
2465     gtk_render_background (context, cr,
2466                            x + CALENDAR_MARGIN,
2467                            y + CALENDAR_MARGIN,
2468                            priv->week_width - CALENDAR_MARGIN,
2469                            priv->main_h - 2 * CALENDAR_MARGIN);
2470
2471   /*
2472    * Write the labels
2473    */
2474
2475   layout = gtk_widget_create_pango_layout (widget, NULL);
2476   day_height = calendar_row_height (calendar);
2477
2478   for (row = 0; row < 6; row++)
2479     {
2480       gboolean result;
2481
2482       year = priv->year;
2483       if (priv->day[row][6] < 15 && row > 3 && priv->month == 11)
2484         year++;
2485
2486       result = week_of_year (&week, &year,
2487                              ((priv->day[row][6] < 15 && row > 3 ? 1 : 0)
2488                               + priv->month) % 12 + 1, priv->day[row][6]);
2489       g_return_if_fail (result);
2490
2491       /* Translators: this defines whether the week numbers should use
2492        * localized digits or the ones used in English (0123...).
2493        *
2494        * Translate to "%Id" if you want to use localized digits, or
2495        * translate to "%d" otherwise.
2496        *
2497        * Note that translating this doesn't guarantee that you get localized
2498        * digits. That needs support from your system and locale definition
2499        * too.
2500        */
2501       g_snprintf (buffer, sizeof (buffer), C_("calendar:week:digits", "%d"), week);
2502       pango_layout_set_text (layout, buffer, -1);
2503       pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2504
2505       y_loc = calendar_top_y_for_row (calendar, row) + (day_height - logical_rect.height) / 2;
2506
2507       x_loc = x + (priv->week_width
2508                    - logical_rect.width
2509                    - calendar_xsep - focus_padding - focus_width);
2510
2511       gtk_render_layout (context, cr, x_loc, y_loc, layout);
2512     }
2513
2514   g_object_unref (layout);
2515
2516   gtk_style_context_restore (context);
2517   cairo_restore (cr);
2518 }
2519
2520 static void
2521 calendar_invalidate_day_num (GtkCalendar *calendar,
2522                              gint         day)
2523 {
2524   GtkCalendarPrivate *priv = calendar->priv;
2525   gint r, c, row, col;
2526
2527   row = -1;
2528   col = -1;
2529   for (r = 0; r < 6; r++)
2530     for (c = 0; c < 7; c++)
2531       if (priv->day_month[r][c] == MONTH_CURRENT &&
2532           priv->day[r][c] == day)
2533         {
2534           row = r;
2535           col = c;
2536         }
2537
2538   g_return_if_fail (row != -1);
2539   g_return_if_fail (col != -1);
2540
2541   calendar_invalidate_day (calendar, row, col);
2542 }
2543
2544 static void
2545 calendar_invalidate_day (GtkCalendar *calendar,
2546                          gint         row,
2547                          gint         col)
2548 {
2549   GdkRectangle day_rect;
2550   GtkAllocation allocation;
2551
2552   gtk_widget_get_allocation (GTK_WIDGET (calendar), &allocation);
2553   calendar_day_rectangle (calendar, row, col, &day_rect);
2554   gtk_widget_queue_draw_area (GTK_WIDGET (calendar),
2555                               allocation.x + day_rect.x,
2556                               allocation.y + day_rect.y,
2557                               day_rect.width, day_rect.height);
2558 }
2559
2560 static gboolean
2561 is_color_attribute (PangoAttribute *attribute,
2562                     gpointer        data)
2563 {
2564   return (attribute->klass->type == PANGO_ATTR_FOREGROUND ||
2565           attribute->klass->type == PANGO_ATTR_BACKGROUND);
2566 }
2567
2568 static void
2569 calendar_paint_day (GtkCalendar *calendar,
2570                     cairo_t     *cr,
2571                     gint         row,
2572                     gint         col)
2573 {
2574   GtkWidget *widget = GTK_WIDGET (calendar);
2575   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2576   GtkStyleContext *context;
2577   GtkStateFlags state = 0;
2578   gchar *detail;
2579   gchar buffer[32];
2580   gint day;
2581   gint x_loc, y_loc;
2582   GdkRectangle day_rect;
2583
2584   PangoLayout *layout;
2585   PangoRectangle logical_rect;
2586   gboolean overflow = FALSE;
2587   gboolean show_details;
2588
2589   g_return_if_fail (row < 6);
2590   g_return_if_fail (col < 7);
2591
2592   context = gtk_widget_get_style_context (widget);
2593   state = gtk_widget_get_state_flags (widget);
2594
2595   day = priv->day[row][col];
2596   show_details = (priv->display_flags & GTK_CALENDAR_SHOW_DETAILS);
2597
2598   calendar_day_rectangle (calendar, row, col, &day_rect);
2599
2600   gtk_style_context_save (context);
2601
2602   state &= ~(GTK_STATE_FLAG_INCONSISTENT | GTK_STATE_FLAG_ACTIVE | GTK_STATE_FLAG_SELECTED);
2603
2604   if (priv->day_month[row][col] == MONTH_PREV ||
2605       priv->day_month[row][col] == MONTH_NEXT)
2606     state |= GTK_STATE_FLAG_INCONSISTENT;
2607   else
2608     {
2609       if (priv->marked_date[day-1])
2610         state |= GTK_STATE_FLAG_ACTIVE;
2611
2612       if (priv->selected_day == day)
2613         {
2614           state |= GTK_STATE_FLAG_SELECTED;
2615
2616           gtk_style_context_set_state (context, state);
2617           gtk_render_background (context, cr,
2618                                  day_rect.x, day_rect.y,
2619                                  day_rect.width, day_rect.height);
2620         }
2621     }
2622
2623   gtk_style_context_set_state (context, state);
2624
2625   /* Translators: this defines whether the day numbers should use
2626    * localized digits or the ones used in English (0123...).
2627    *
2628    * Translate to "%Id" if you want to use localized digits, or
2629    * translate to "%d" otherwise.
2630    *
2631    * Note that translating this doesn't guarantee that you get localized
2632    * digits. That needs support from your system and locale definition
2633    * too.
2634    */
2635   g_snprintf (buffer, sizeof (buffer), C_("calendar:day:digits", "%d"), day);
2636
2637   /* Get extra information to show, if any: */
2638
2639   detail = gtk_calendar_get_detail (calendar, row, col);
2640
2641   layout = gtk_widget_create_pango_layout (widget, buffer);
2642   pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
2643   pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
2644
2645   x_loc = day_rect.x + (day_rect.width - logical_rect.width) / 2;
2646   y_loc = day_rect.y;
2647
2648   gtk_render_layout (context, cr, x_loc, y_loc, layout);
2649
2650   if (priv->day_month[row][col] == MONTH_CURRENT &&
2651      (priv->marked_date[day-1] || (detail && !show_details)))
2652     gtk_render_layout (context, cr, x_loc - 1, y_loc, layout);
2653
2654   y_loc += priv->max_day_char_descent;
2655
2656   if (priv->detail_func && show_details)
2657     {
2658       GdkRGBA color;
2659
2660       cairo_save (cr);
2661
2662       gtk_style_context_get_color (context, state, &color);
2663       gdk_cairo_set_source_rgba (cr, &color);
2664
2665       cairo_set_line_width (cr, 1);
2666       cairo_move_to (cr, day_rect.x + 2, y_loc + 0.5);
2667       cairo_line_to (cr, day_rect.x + day_rect.width - 2, y_loc + 0.5);
2668       cairo_stroke (cr);
2669
2670       cairo_restore (cr);
2671
2672       y_loc += 2;
2673     }
2674
2675   if (detail && show_details)
2676     {
2677       gchar *markup = g_strconcat ("<small>", detail, "</small>", NULL);
2678       pango_layout_set_markup (layout, markup, -1);
2679       g_free (markup);
2680
2681       if (day == priv->selected_day)
2682         {
2683           /* Stripping colors as they conflict with selection marking. */
2684
2685           PangoAttrList *attrs = pango_layout_get_attributes (layout);
2686           PangoAttrList *colors = NULL;
2687
2688           if (attrs)
2689             colors = pango_attr_list_filter (attrs, is_color_attribute, NULL);
2690           if (colors)
2691             pango_attr_list_unref (colors);
2692         }
2693
2694       pango_layout_set_wrap (layout, PANGO_WRAP_WORD_CHAR);
2695       pango_layout_set_width (layout, PANGO_SCALE * day_rect.width);
2696
2697       if (priv->detail_height_rows)
2698         {
2699           gint dy = day_rect.height - (y_loc - day_rect.y);
2700           pango_layout_set_height (layout, PANGO_SCALE * dy);
2701           pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END);
2702         }
2703
2704       cairo_move_to (cr, day_rect.x, y_loc);
2705       pango_cairo_show_layout (cr, layout);
2706     }
2707
2708   if (gtk_widget_has_visible_focus (widget) &&
2709       priv->focus_row == row && priv->focus_col == col)
2710     gtk_render_focus (context, cr,
2711                       day_rect.x, day_rect.y,
2712                       day_rect.width, day_rect.height);
2713
2714   if (overflow)
2715     priv->detail_overflow[row] |= (1 << col);
2716   else
2717     priv->detail_overflow[row] &= ~(1 << col);
2718
2719   gtk_style_context_restore (context);
2720   g_object_unref (layout);
2721   g_free (detail);
2722 }
2723
2724 static void
2725 calendar_paint_main (GtkCalendar *calendar,
2726                      cairo_t     *cr)
2727 {
2728   gint row, col;
2729
2730   cairo_save (cr);
2731
2732   for (col = 0; col < 7; col++)
2733     for (row = 0; row < 6; row++)
2734       calendar_paint_day (calendar, cr, row, col);
2735
2736   cairo_restore (cr);
2737 }
2738
2739 static void
2740 calendar_invalidate_arrow (GtkCalendar *calendar,
2741                            guint        arrow)
2742 {
2743   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2744
2745   if (priv->display_flags & GTK_CALENDAR_SHOW_HEADING &&
2746       priv->arrow_win[arrow])
2747     {
2748       GdkRectangle rect;
2749       GtkAllocation allocation;
2750
2751       calendar_arrow_rectangle (calendar, arrow, &rect);
2752       gtk_widget_get_allocation (GTK_WIDGET (calendar), &allocation);
2753       gtk_widget_queue_draw_area (GTK_WIDGET (calendar),
2754                                   allocation.x + rect.x,
2755                                   allocation.y + rect.y,
2756                                   rect.width, rect.height);
2757     }
2758 }
2759
2760 static void
2761 calendar_paint_arrow (GtkCalendar *calendar,
2762                       cairo_t     *cr,
2763                       guint        arrow)
2764 {
2765   GtkWidget *widget = GTK_WIDGET (calendar);
2766   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
2767   GtkStyleContext *context;
2768   GtkStateFlags state;
2769   GdkRectangle rect;
2770   gdouble angle;
2771
2772   if (!priv->arrow_win[arrow])
2773     return;
2774
2775   calendar_arrow_rectangle (calendar, arrow, &rect);
2776
2777   cairo_save (cr);
2778
2779   context = gtk_widget_get_style_context (widget);
2780   state = priv->arrow_state[arrow];
2781
2782   gtk_style_context_save (context);
2783   gtk_style_context_set_state (context, state);
2784   gtk_style_context_add_class (context, GTK_STYLE_CLASS_BUTTON);
2785
2786   gtk_render_background (context, cr,
2787                          rect.x, rect.y,
2788                          rect.width, rect.height);
2789
2790   if (arrow == ARROW_MONTH_LEFT || arrow == ARROW_YEAR_LEFT)
2791     angle = 3 * (G_PI / 2);
2792   else
2793     angle = G_PI / 2;
2794
2795   gtk_render_arrow (context, cr, angle,
2796                     rect.x + (rect.width - 8) / 2,
2797                     rect.y + (rect.height - 8) / 2,
2798                     8);
2799
2800   gtk_style_context_restore (context);
2801   cairo_restore (cr);
2802 }
2803
2804 static gboolean
2805 gtk_calendar_draw (GtkWidget *widget,
2806                    cairo_t   *cr)
2807 {
2808   GtkCalendar *calendar = GTK_CALENDAR (widget);
2809   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
2810   int i;
2811
2812   if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)))
2813     {
2814       GtkStyleContext *context;
2815
2816       context = gtk_widget_get_style_context (widget);
2817
2818       gtk_style_context_save (context);
2819       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2820
2821       gtk_render_background (context, cr, 0, 0,
2822                              gtk_widget_get_allocated_width (widget),
2823                              gtk_widget_get_allocated_height (widget));
2824       gtk_render_frame (context, cr, 0, 0,
2825                         gtk_widget_get_allocated_width (widget),
2826                         gtk_widget_get_allocated_height (widget));
2827
2828       gtk_style_context_restore (context);
2829     }
2830
2831   calendar_paint_main (calendar, cr);
2832
2833   if (priv->display_flags & GTK_CALENDAR_SHOW_HEADING)
2834     {
2835       calendar_paint_header (calendar, cr);
2836       for (i = 0; i < 4; i++)
2837         calendar_paint_arrow (calendar, cr, i);
2838     }
2839
2840   if (priv->display_flags & GTK_CALENDAR_SHOW_DAY_NAMES)
2841     calendar_paint_day_names (calendar, cr);
2842
2843   if (priv->display_flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
2844     calendar_paint_week_numbers (calendar, cr);
2845
2846   return FALSE;
2847 }
2848
2849
2850 /****************************************
2851  *           Mouse handling             *
2852  ****************************************/
2853
2854 static void
2855 calendar_arrow_action (GtkCalendar *calendar,
2856                        guint        arrow)
2857 {
2858   switch (arrow)
2859     {
2860     case ARROW_YEAR_LEFT:
2861       calendar_set_year_prev (calendar);
2862       break;
2863     case ARROW_YEAR_RIGHT:
2864       calendar_set_year_next (calendar);
2865       break;
2866     case ARROW_MONTH_LEFT:
2867       calendar_set_month_prev (calendar);
2868       break;
2869     case ARROW_MONTH_RIGHT:
2870       calendar_set_month_next (calendar);
2871       break;
2872     default:;
2873       /* do nothing */
2874     }
2875 }
2876
2877 static gboolean
2878 calendar_timer (gpointer data)
2879 {
2880   GtkCalendar *calendar = data;
2881   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2882   gboolean retval = FALSE;
2883
2884   if (priv->timer)
2885     {
2886       calendar_arrow_action (calendar, priv->click_child);
2887
2888       if (priv->need_timer)
2889         {
2890           GtkSettings *settings;
2891           guint        timeout;
2892
2893           settings = gtk_widget_get_settings (GTK_WIDGET (calendar));
2894           g_object_get (settings, "gtk-timeout-repeat", &timeout, NULL);
2895
2896           priv->need_timer = FALSE;
2897           priv->timer = gdk_threads_add_timeout_full (G_PRIORITY_DEFAULT_IDLE,
2898                                             timeout * SCROLL_DELAY_FACTOR,
2899                                             (GSourceFunc) calendar_timer,
2900                                             (gpointer) calendar, NULL);
2901         }
2902       else
2903         retval = TRUE;
2904     }
2905
2906   return retval;
2907 }
2908
2909 static void
2910 calendar_start_spinning (GtkCalendar *calendar,
2911                          gint         click_child)
2912 {
2913   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2914
2915   priv->click_child = click_child;
2916
2917   if (!priv->timer)
2918     {
2919       GtkSettings *settings;
2920       guint        timeout;
2921
2922       settings = gtk_widget_get_settings (GTK_WIDGET (calendar));
2923       g_object_get (settings, "gtk-timeout-initial", &timeout, NULL);
2924
2925       priv->need_timer = TRUE;
2926       priv->timer = gdk_threads_add_timeout_full (G_PRIORITY_DEFAULT_IDLE,
2927                                         timeout,
2928                                         (GSourceFunc) calendar_timer,
2929                                         (gpointer) calendar, NULL);
2930     }
2931 }
2932
2933 static void
2934 calendar_stop_spinning (GtkCalendar *calendar)
2935 {
2936   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2937
2938   if (priv->timer)
2939     {
2940       g_source_remove (priv->timer);
2941       priv->timer = 0;
2942       priv->need_timer = FALSE;
2943     }
2944 }
2945
2946 static void
2947 calendar_main_button_press (GtkCalendar    *calendar,
2948                             GdkEventButton *event)
2949 {
2950   GtkWidget *widget = GTK_WIDGET (calendar);
2951   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
2952   gint x, y;
2953   gint win_x, win_y;
2954   gint row, col;
2955   gint day_month;
2956   gint day;
2957   GtkAllocation allocation;
2958
2959   x = (gint) (event->x);
2960   y = (gint) (event->y);
2961
2962   gdk_window_get_position (priv->main_win, &win_x, &win_y);
2963   gtk_widget_get_allocation (widget, &allocation);
2964
2965   row = calendar_row_from_y (calendar, y + win_y - allocation.y);
2966   col = calendar_column_from_x (calendar, x + win_x - allocation.x);
2967
2968   /* If row or column isn't found, just return. */
2969   if (row == -1 || col == -1)
2970     return;
2971
2972   day_month = priv->day_month[row][col];
2973
2974   if (event->type == GDK_BUTTON_PRESS)
2975     {
2976       day = priv->day[row][col];
2977
2978       if (day_month == MONTH_PREV)
2979         calendar_set_month_prev (calendar);
2980       else if (day_month == MONTH_NEXT)
2981         calendar_set_month_next (calendar);
2982
2983       if (!gtk_widget_has_focus (widget))
2984         gtk_widget_grab_focus (widget);
2985
2986       if (event->button == 1)
2987         {
2988           priv->in_drag = 1;
2989           priv->drag_start_x = x;
2990           priv->drag_start_y = y;
2991         }
2992
2993       calendar_select_and_focus_day (calendar, day);
2994     }
2995   else if (event->type == GDK_2BUTTON_PRESS)
2996     {
2997       priv->in_drag = 0;
2998       if (day_month == MONTH_CURRENT)
2999         g_signal_emit (calendar,
3000                        gtk_calendar_signals[DAY_SELECTED_DOUBLE_CLICK_SIGNAL],
3001                        0);
3002     }
3003 }
3004
3005 static gboolean
3006 gtk_calendar_button_press (GtkWidget      *widget,
3007                            GdkEventButton *event)
3008 {
3009   GtkCalendar *calendar = GTK_CALENDAR (widget);
3010   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3011   gint arrow = -1;
3012
3013   if (event->window == priv->main_win)
3014     calendar_main_button_press (calendar, event);
3015
3016   if (!gtk_widget_has_focus (widget))
3017     gtk_widget_grab_focus (widget);
3018
3019   for (arrow = ARROW_YEAR_LEFT; arrow <= ARROW_MONTH_RIGHT; arrow++)
3020     {
3021       if (event->window == priv->arrow_win[arrow])
3022         {
3023
3024           /* only call the action on single click, not double */
3025           if (event->type == GDK_BUTTON_PRESS)
3026             {
3027               if (event->button == 1)
3028                 calendar_start_spinning (calendar, arrow);
3029
3030               calendar_arrow_action (calendar, arrow);
3031             }
3032
3033           return TRUE;
3034         }
3035     }
3036
3037   return FALSE;
3038 }
3039
3040 static gboolean
3041 gtk_calendar_button_release (GtkWidget    *widget,
3042                              GdkEventButton *event)
3043 {
3044   GtkCalendar *calendar = GTK_CALENDAR (widget);
3045   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3046
3047   if (event->button == 1)
3048     {
3049       calendar_stop_spinning (calendar);
3050
3051       if (priv->in_drag)
3052         priv->in_drag = 0;
3053     }
3054
3055   return TRUE;
3056 }
3057
3058 static gboolean
3059 gtk_calendar_motion_notify (GtkWidget      *widget,
3060                             GdkEventMotion *event)
3061 {
3062   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3063
3064   if (priv->in_drag)
3065     {
3066       if (gtk_drag_check_threshold (widget,
3067                                     priv->drag_start_x, priv->drag_start_y,
3068                                     event->x, event->y))
3069         {
3070           GdkDragContext *context;
3071           GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3072           gtk_target_list_add_text_targets (target_list, 0);
3073           context = gtk_drag_begin (widget, target_list, GDK_ACTION_COPY,
3074                                     1, (GdkEvent *)event);
3075
3076           priv->in_drag = 0;
3077           gtk_target_list_unref (target_list);
3078           gtk_drag_set_icon_default (context);
3079         }
3080     }
3081
3082   return TRUE;
3083 }
3084
3085 static gboolean
3086 gtk_calendar_enter_notify (GtkWidget        *widget,
3087                            GdkEventCrossing *event)
3088 {
3089   GtkCalendar *calendar = GTK_CALENDAR (widget);
3090   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3091
3092   if (event->window == priv->arrow_win[ARROW_MONTH_LEFT])
3093     {
3094       priv->arrow_state[ARROW_MONTH_LEFT] |= GTK_STATE_FLAG_PRELIGHT;
3095       calendar_invalidate_arrow (calendar, ARROW_MONTH_LEFT);
3096     }
3097
3098   if (event->window == priv->arrow_win[ARROW_MONTH_RIGHT])
3099     {
3100       priv->arrow_state[ARROW_MONTH_RIGHT] |= GTK_STATE_FLAG_PRELIGHT;
3101       calendar_invalidate_arrow (calendar, ARROW_MONTH_RIGHT);
3102     }
3103
3104   if (event->window == priv->arrow_win[ARROW_YEAR_LEFT])
3105     {
3106       priv->arrow_state[ARROW_YEAR_LEFT] |= GTK_STATE_FLAG_PRELIGHT;
3107       calendar_invalidate_arrow (calendar, ARROW_YEAR_LEFT);
3108     }
3109
3110   if (event->window == priv->arrow_win[ARROW_YEAR_RIGHT])
3111     {
3112       priv->arrow_state[ARROW_YEAR_RIGHT] |= GTK_STATE_FLAG_PRELIGHT;
3113       calendar_invalidate_arrow (calendar, ARROW_YEAR_RIGHT);
3114     }
3115
3116   return TRUE;
3117 }
3118
3119 static gboolean
3120 gtk_calendar_leave_notify (GtkWidget        *widget,
3121                            GdkEventCrossing *event)
3122 {
3123   GtkCalendar *calendar = GTK_CALENDAR (widget);
3124   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3125
3126   if (event->window == priv->arrow_win[ARROW_MONTH_LEFT])
3127     {
3128       priv->arrow_state[ARROW_MONTH_LEFT] &= ~(GTK_STATE_FLAG_PRELIGHT);
3129       calendar_invalidate_arrow (calendar, ARROW_MONTH_LEFT);
3130     }
3131
3132   if (event->window == priv->arrow_win[ARROW_MONTH_RIGHT])
3133     {
3134       priv->arrow_state[ARROW_MONTH_RIGHT] &= ~(GTK_STATE_FLAG_PRELIGHT);
3135       calendar_invalidate_arrow (calendar, ARROW_MONTH_RIGHT);
3136     }
3137
3138   if (event->window == priv->arrow_win[ARROW_YEAR_LEFT])
3139     {
3140       priv->arrow_state[ARROW_YEAR_LEFT] &= ~(GTK_STATE_FLAG_PRELIGHT);
3141       calendar_invalidate_arrow (calendar, ARROW_YEAR_LEFT);
3142     }
3143
3144   if (event->window == priv->arrow_win[ARROW_YEAR_RIGHT])
3145     {
3146       priv->arrow_state[ARROW_YEAR_RIGHT] &= ~(GTK_STATE_FLAG_PRELIGHT);
3147       calendar_invalidate_arrow (calendar, ARROW_YEAR_RIGHT);
3148     }
3149
3150   return TRUE;
3151 }
3152
3153 static gboolean
3154 gtk_calendar_scroll (GtkWidget      *widget,
3155                      GdkEventScroll *event)
3156 {
3157   GtkCalendar *calendar = GTK_CALENDAR (widget);
3158
3159   if (event->direction == GDK_SCROLL_UP)
3160     {
3161       if (!gtk_widget_has_focus (widget))
3162         gtk_widget_grab_focus (widget);
3163       calendar_set_month_prev (calendar);
3164     }
3165   else if (event->direction == GDK_SCROLL_DOWN)
3166     {
3167       if (!gtk_widget_has_focus (widget))
3168         gtk_widget_grab_focus (widget);
3169       calendar_set_month_next (calendar);
3170     }
3171   else
3172     return FALSE;
3173
3174   return TRUE;
3175 }
3176
3177 \f
3178 /****************************************
3179  *             Key handling              *
3180  ****************************************/
3181
3182 static void
3183 move_focus (GtkCalendar *calendar,
3184             gint         direction)
3185 {
3186   GtkCalendarPrivate *priv = calendar->priv;
3187   GtkTextDirection text_dir = gtk_widget_get_direction (GTK_WIDGET (calendar));
3188
3189   if ((text_dir == GTK_TEXT_DIR_LTR && direction == -1) ||
3190       (text_dir == GTK_TEXT_DIR_RTL && direction == 1))
3191     {
3192       if (priv->focus_col > 0)
3193           priv->focus_col--;
3194       else if (priv->focus_row > 0)
3195         {
3196           priv->focus_col = 6;
3197           priv->focus_row--;
3198         }
3199
3200       if (priv->focus_col < 0)
3201         priv->focus_col = 6;
3202       if (priv->focus_row < 0)
3203         priv->focus_row = 5;
3204     }
3205   else
3206     {
3207       if (priv->focus_col < 6)
3208         priv->focus_col++;
3209       else if (priv->focus_row < 5)
3210         {
3211           priv->focus_col = 0;
3212           priv->focus_row++;
3213         }
3214
3215       if (priv->focus_col < 0)
3216         priv->focus_col = 0;
3217       if (priv->focus_row < 0)
3218         priv->focus_row = 0;
3219     }
3220 }
3221
3222 static gboolean
3223 gtk_calendar_key_press (GtkWidget   *widget,
3224                         GdkEventKey *event)
3225 {
3226   GtkCalendar *calendar = GTK_CALENDAR (widget);
3227   GtkCalendarPrivate *priv = calendar->priv;
3228   gint return_val;
3229   gint old_focus_row;
3230   gint old_focus_col;
3231   gint row, col, day;
3232
3233   return_val = FALSE;
3234
3235   old_focus_row = priv->focus_row;
3236   old_focus_col = priv->focus_col;
3237
3238   switch (event->keyval)
3239     {
3240     case GDK_KEY_KP_Left:
3241     case GDK_KEY_Left:
3242       return_val = TRUE;
3243       if (event->state & GDK_CONTROL_MASK)
3244         calendar_set_month_prev (calendar);
3245       else
3246         {
3247           move_focus (calendar, -1);
3248           calendar_invalidate_day (calendar, old_focus_row, old_focus_col);
3249           calendar_invalidate_day (calendar, priv->focus_row,
3250                                    priv->focus_col);
3251         }
3252       break;
3253     case GDK_KEY_KP_Right:
3254     case GDK_KEY_Right:
3255       return_val = TRUE;
3256       if (event->state & GDK_CONTROL_MASK)
3257         calendar_set_month_next (calendar);
3258       else
3259         {
3260           move_focus (calendar, 1);
3261           calendar_invalidate_day (calendar, old_focus_row, old_focus_col);
3262           calendar_invalidate_day (calendar, priv->focus_row,
3263                                    priv->focus_col);
3264         }
3265       break;
3266     case GDK_KEY_KP_Up:
3267     case GDK_KEY_Up:
3268       return_val = TRUE;
3269       if (event->state & GDK_CONTROL_MASK)
3270         calendar_set_year_prev (calendar);
3271       else
3272         {
3273           if (priv->focus_row > 0)
3274             priv->focus_row--;
3275           if (priv->focus_row < 0)
3276             priv->focus_row = 5;
3277           if (priv->focus_col < 0)
3278             priv->focus_col = 6;
3279           calendar_invalidate_day (calendar, old_focus_row, old_focus_col);
3280           calendar_invalidate_day (calendar, priv->focus_row,
3281                                    priv->focus_col);
3282         }
3283       break;
3284     case GDK_KEY_KP_Down:
3285     case GDK_KEY_Down:
3286       return_val = TRUE;
3287       if (event->state & GDK_CONTROL_MASK)
3288         calendar_set_year_next (calendar);
3289       else
3290         {
3291           if (priv->focus_row < 5)
3292             priv->focus_row++;
3293           if (priv->focus_col < 0)
3294             priv->focus_col = 0;
3295           calendar_invalidate_day (calendar, old_focus_row, old_focus_col);
3296           calendar_invalidate_day (calendar, priv->focus_row,
3297                                    priv->focus_col);
3298         }
3299       break;
3300     case GDK_KEY_KP_Space:
3301     case GDK_KEY_space:
3302       row = priv->focus_row;
3303       col = priv->focus_col;
3304
3305       if (row > -1 && col > -1)
3306         {
3307           return_val = TRUE;
3308
3309           day = priv->day[row][col];
3310           if (priv->day_month[row][col] == MONTH_PREV)
3311             calendar_set_month_prev (calendar);
3312           else if (priv->day_month[row][col] == MONTH_NEXT)
3313             calendar_set_month_next (calendar);
3314
3315           calendar_select_and_focus_day (calendar, day);
3316         }
3317     }
3318
3319   return return_val;
3320 }
3321
3322 \f
3323 /****************************************
3324  *           Misc widget methods        *
3325  ****************************************/
3326
3327 static void
3328 gtk_calendar_state_flags_changed (GtkWidget     *widget,
3329                                   GtkStateFlags  previous_state)
3330 {
3331   GtkCalendar *calendar = GTK_CALENDAR (widget);
3332   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3333   int i;
3334
3335   if (!gtk_widget_is_sensitive (widget))
3336     {
3337       priv->in_drag = 0;
3338       calendar_stop_spinning (calendar);
3339     }
3340
3341   for (i = 0; i < 4; i++)
3342     if (gtk_widget_is_sensitive (widget))
3343       priv->arrow_state[i] &= ~(GTK_STATE_FLAG_INSENSITIVE);
3344     else
3345       priv->arrow_state[i] |= GTK_STATE_FLAG_INSENSITIVE;
3346 }
3347
3348 static void
3349 gtk_calendar_grab_notify (GtkWidget *widget,
3350                           gboolean   was_grabbed)
3351 {
3352   if (!was_grabbed)
3353     calendar_stop_spinning (GTK_CALENDAR (widget));
3354 }
3355
3356 static gboolean
3357 gtk_calendar_focus_out (GtkWidget     *widget,
3358                         GdkEventFocus *event)
3359 {
3360   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3361   GtkCalendar *calendar = GTK_CALENDAR (widget);
3362
3363   calendar_queue_refresh (calendar);
3364   calendar_stop_spinning (calendar);
3365
3366   priv->in_drag = 0;
3367
3368   return FALSE;
3369 }
3370
3371 \f
3372 /****************************************
3373  *          Drag and Drop               *
3374  ****************************************/
3375
3376 static void
3377 gtk_calendar_drag_data_get (GtkWidget        *widget,
3378                             GdkDragContext   *context,
3379                             GtkSelectionData *selection_data,
3380                             guint             info,
3381                             guint             time)
3382 {
3383   GtkCalendar *calendar = GTK_CALENDAR (widget);
3384   GtkCalendarPrivate *priv = calendar->priv;
3385   GDate *date;
3386   gchar str[128];
3387   gsize len;
3388
3389   date = g_date_new_dmy (priv->selected_day, priv->month + 1, priv->year);
3390   len = g_date_strftime (str, 127, "%x", date);
3391   gtk_selection_data_set_text (selection_data, str, len);
3392
3393   g_free (date);
3394 }
3395
3396 /* Get/set whether drag_motion requested the drag data and
3397  * drag_data_received should thus not actually insert the data,
3398  * since the data doesn't result from a drop.
3399  */
3400 static void
3401 set_status_pending (GdkDragContext *context,
3402                     GdkDragAction   suggested_action)
3403 {
3404   g_object_set_data (G_OBJECT (context),
3405                      I_("gtk-calendar-status-pending"),
3406                      GINT_TO_POINTER (suggested_action));
3407 }
3408
3409 static GdkDragAction
3410 get_status_pending (GdkDragContext *context)
3411 {
3412   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
3413                                              "gtk-calendar-status-pending"));
3414 }
3415
3416 static void
3417 gtk_calendar_drag_leave (GtkWidget      *widget,
3418                          GdkDragContext *context,
3419                          guint           time)
3420 {
3421   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3422
3423   priv->drag_highlight = 0;
3424   gtk_drag_unhighlight (widget);
3425
3426 }
3427
3428 static gboolean
3429 gtk_calendar_drag_motion (GtkWidget      *widget,
3430                           GdkDragContext *context,
3431                           gint            x,
3432                           gint            y,
3433                           guint           time)
3434 {
3435   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (widget);
3436   GdkAtom target;
3437
3438   if (!priv->drag_highlight)
3439     {
3440       priv->drag_highlight = 1;
3441       gtk_drag_highlight (widget);
3442     }
3443
3444   target = gtk_drag_dest_find_target (widget, context, NULL);
3445   if (target == GDK_NONE || gdk_drag_context_get_suggested_action (context) == 0)
3446     gdk_drag_status (context, 0, time);
3447   else
3448     {
3449       set_status_pending (context, gdk_drag_context_get_suggested_action (context));
3450       gtk_drag_get_data (widget, context, target, time);
3451     }
3452
3453   return TRUE;
3454 }
3455
3456 static gboolean
3457 gtk_calendar_drag_drop (GtkWidget      *widget,
3458                         GdkDragContext *context,
3459                         gint            x,
3460                         gint            y,
3461                         guint           time)
3462 {
3463   GdkAtom target;
3464
3465   target = gtk_drag_dest_find_target (widget, context, NULL);
3466   if (target != GDK_NONE)
3467     {
3468       gtk_drag_get_data (widget, context,
3469                          target,
3470                          time);
3471       return TRUE;
3472     }
3473
3474   return FALSE;
3475 }
3476
3477 static void
3478 gtk_calendar_drag_data_received (GtkWidget        *widget,
3479                                  GdkDragContext   *context,
3480                                  gint              x,
3481                                  gint              y,
3482                                  GtkSelectionData *selection_data,
3483                                  guint             info,
3484                                  guint             time)
3485 {
3486   GtkCalendar *calendar = GTK_CALENDAR (widget);
3487   GtkCalendarPrivate *priv = calendar->priv;
3488   guint day, month, year;
3489   gchar *str;
3490   GDate *date;
3491   GdkDragAction suggested_action;
3492
3493   suggested_action = get_status_pending (context);
3494
3495   if (suggested_action)
3496     {
3497       set_status_pending (context, 0);
3498
3499       /* We are getting this data due to a request in drag_motion,
3500        * rather than due to a request in drag_drop, so we are just
3501        * supposed to call drag_status, not actually paste in the
3502        * data.
3503        */
3504       str = (gchar*) gtk_selection_data_get_text (selection_data);
3505
3506       if (str)
3507         {
3508           date = g_date_new ();
3509           g_date_set_parse (date, str);
3510           if (!g_date_valid (date))
3511               suggested_action = 0;
3512           g_date_free (date);
3513           g_free (str);
3514         }
3515       else
3516         suggested_action = 0;
3517
3518       gdk_drag_status (context, suggested_action, time);
3519
3520       return;
3521     }
3522
3523   date = g_date_new ();
3524   str = (gchar*) gtk_selection_data_get_text (selection_data);
3525   if (str)
3526     {
3527       g_date_set_parse (date, str);
3528       g_free (str);
3529     }
3530
3531   if (!g_date_valid (date))
3532     {
3533       g_warning ("Received invalid date data\n");
3534       g_date_free (date);
3535       gtk_drag_finish (context, FALSE, FALSE, time);
3536       return;
3537     }
3538
3539   day = g_date_get_day (date);
3540   month = g_date_get_month (date);
3541   year = g_date_get_year (date);
3542   g_date_free (date);
3543
3544   gtk_drag_finish (context, TRUE, FALSE, time);
3545
3546
3547   g_object_freeze_notify (G_OBJECT (calendar));
3548   if (!(priv->display_flags & GTK_CALENDAR_NO_MONTH_CHANGE)
3549       && (priv->display_flags & GTK_CALENDAR_SHOW_HEADING))
3550     gtk_calendar_select_month (calendar, month - 1, year);
3551   gtk_calendar_select_day (calendar, day);
3552   g_object_thaw_notify (G_OBJECT (calendar));
3553 }
3554
3555 \f
3556 /****************************************
3557  *              Public API              *
3558  ****************************************/
3559
3560 /**
3561  * gtk_calendar_new:
3562  *
3563  * Creates a new calendar, with the current date being selected.
3564  *
3565  * Return value: a newly #GtkCalendar widget
3566  **/
3567 GtkWidget*
3568 gtk_calendar_new (void)
3569 {
3570   return g_object_new (GTK_TYPE_CALENDAR, NULL);
3571 }
3572
3573 /**
3574  * gtk_calendar_get_display_options:
3575  * @calendar: a #GtkCalendar
3576  *
3577  * Returns the current display options of @calendar.
3578  *
3579  * Return value: the display options.
3580  *
3581  * Since: 2.4
3582  **/
3583 GtkCalendarDisplayOptions
3584 gtk_calendar_get_display_options (GtkCalendar         *calendar)
3585 {
3586   g_return_val_if_fail (GTK_IS_CALENDAR (calendar), 0);
3587
3588   return calendar->priv->display_flags;
3589 }
3590
3591 /**
3592  * gtk_calendar_set_display_options:
3593  * @calendar: a #GtkCalendar
3594  * @flags: the display options to set
3595  *
3596  * Sets display options (whether to display the heading and the month
3597  * headings).
3598  *
3599  * Since: 2.4
3600  **/
3601 void
3602 gtk_calendar_set_display_options (GtkCalendar          *calendar,
3603                                   GtkCalendarDisplayOptions flags)
3604 {
3605   GtkWidget *widget = GTK_WIDGET (calendar);
3606   GtkCalendarPrivate *priv = GTK_CALENDAR_GET_PRIVATE (calendar);
3607   gint resize = 0;
3608   GtkCalendarDisplayOptions old_flags;
3609
3610   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3611
3612   old_flags = priv->display_flags;
3613
3614   if (gtk_widget_get_realized (widget))
3615     {
3616       if ((flags ^ priv->display_flags) & GTK_CALENDAR_NO_MONTH_CHANGE)
3617         {
3618           resize ++;
3619           if (! (flags & GTK_CALENDAR_NO_MONTH_CHANGE)
3620               && (priv->display_flags & GTK_CALENDAR_SHOW_HEADING))
3621             {
3622               priv->display_flags &= ~GTK_CALENDAR_NO_MONTH_CHANGE;
3623               calendar_realize_arrows (calendar);
3624               if (gtk_widget_get_mapped (widget))
3625                 calendar_map_arrows (calendar);
3626             }
3627           else
3628             {
3629               calendar_unrealize_arrows (calendar);
3630             }
3631         }
3632
3633       if ((flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_HEADING)
3634         {
3635           resize++;
3636
3637           if (flags & GTK_CALENDAR_SHOW_HEADING)
3638             {
3639               priv->display_flags |= GTK_CALENDAR_SHOW_HEADING;
3640               calendar_realize_arrows (calendar);
3641               if (gtk_widget_get_mapped (widget))
3642                 calendar_map_arrows (calendar);
3643             }
3644           else
3645             {
3646               calendar_unrealize_arrows (calendar);
3647             }
3648         }
3649
3650       if ((flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_DAY_NAMES)
3651         {
3652           resize++;
3653
3654           if (flags & GTK_CALENDAR_SHOW_DAY_NAMES)
3655             priv->display_flags |= GTK_CALENDAR_SHOW_DAY_NAMES;
3656         }
3657
3658       if ((flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
3659         {
3660           resize++;
3661
3662           if (flags & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
3663             priv->display_flags |= GTK_CALENDAR_SHOW_WEEK_NUMBERS;
3664         }
3665
3666       if ((flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_DETAILS)
3667         resize++;
3668
3669       priv->display_flags = flags;
3670       if (resize)
3671         gtk_widget_queue_resize (GTK_WIDGET (calendar));
3672     }
3673   else
3674     priv->display_flags = flags;
3675
3676   g_object_freeze_notify (G_OBJECT (calendar));
3677   if ((old_flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_HEADING)
3678     g_object_notify (G_OBJECT (calendar), "show-heading");
3679   if ((old_flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_DAY_NAMES)
3680     g_object_notify (G_OBJECT (calendar), "show-day-names");
3681   if ((old_flags ^ priv->display_flags) & GTK_CALENDAR_NO_MONTH_CHANGE)
3682     g_object_notify (G_OBJECT (calendar), "no-month-change");
3683   if ((old_flags ^ priv->display_flags) & GTK_CALENDAR_SHOW_WEEK_NUMBERS)
3684     g_object_notify (G_OBJECT (calendar), "show-week-numbers");
3685   g_object_thaw_notify (G_OBJECT (calendar));
3686 }
3687
3688 /**
3689  * gtk_calendar_select_month:
3690  * @calendar: a #GtkCalendar
3691  * @month: a month number between 0 and 11.
3692  * @year: the year the month is in.
3693  *
3694  * Shifts the calendar to a different month.
3695  **/
3696 void
3697 gtk_calendar_select_month (GtkCalendar *calendar,
3698                            guint        month,
3699                            guint        year)
3700 {
3701   GtkCalendarPrivate *priv;
3702
3703   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3704   g_return_if_fail (month <= 11);
3705
3706   priv = calendar->priv;
3707
3708   priv->month = month;
3709   priv->year  = year;
3710
3711   calendar_compute_days (calendar);
3712   calendar_queue_refresh (calendar);
3713
3714   g_object_freeze_notify (G_OBJECT (calendar));
3715   g_object_notify (G_OBJECT (calendar), "month");
3716   g_object_notify (G_OBJECT (calendar), "year");
3717   g_object_thaw_notify (G_OBJECT (calendar));
3718
3719   g_signal_emit (calendar,
3720                  gtk_calendar_signals[MONTH_CHANGED_SIGNAL],
3721                  0);
3722 }
3723
3724 /**
3725  * gtk_calendar_select_day:
3726  * @calendar: a #GtkCalendar.
3727  * @day: the day number between 1 and 31, or 0 to unselect
3728  *   the currently selected day.
3729  *
3730  * Selects a day from the current month.
3731  **/
3732 void
3733 gtk_calendar_select_day (GtkCalendar *calendar,
3734                          guint        day)
3735 {
3736   GtkCalendarPrivate *priv;
3737
3738   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3739   g_return_if_fail (day <= 31);
3740
3741   priv = calendar->priv;
3742
3743   /* Deselect the old day */
3744   if (priv->selected_day > 0)
3745     {
3746       gint selected_day;
3747
3748       selected_day = priv->selected_day;
3749       priv->selected_day = 0;
3750       if (gtk_widget_is_drawable (GTK_WIDGET (calendar)))
3751         calendar_invalidate_day_num (calendar, selected_day);
3752     }
3753
3754   priv->selected_day = day;
3755
3756   /* Select the new day */
3757   if (day != 0)
3758     {
3759       if (gtk_widget_is_drawable (GTK_WIDGET (calendar)))
3760         calendar_invalidate_day_num (calendar, day);
3761     }
3762
3763   g_object_notify (G_OBJECT (calendar), "day");
3764
3765   g_signal_emit (calendar,
3766                  gtk_calendar_signals[DAY_SELECTED_SIGNAL],
3767                  0);
3768 }
3769
3770 /**
3771  * gtk_calendar_clear_marks:
3772  * @calendar: a #GtkCalendar
3773  *
3774  * Remove all visual markers.
3775  **/
3776 void
3777 gtk_calendar_clear_marks (GtkCalendar *calendar)
3778 {
3779   GtkCalendarPrivate *priv;
3780   guint day;
3781
3782   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3783
3784   priv = calendar->priv;
3785
3786   for (day = 0; day < 31; day++)
3787     {
3788       priv->marked_date[day] = FALSE;
3789     }
3790
3791   priv->num_marked_dates = 0;
3792   calendar_queue_refresh (calendar);
3793 }
3794
3795 /**
3796  * gtk_calendar_mark_day:
3797  * @calendar: a #GtkCalendar
3798  * @day: the day number to mark between 1 and 31.
3799  *
3800  * Places a visual marker on a particular day.
3801  */
3802 void
3803 gtk_calendar_mark_day (GtkCalendar *calendar,
3804                        guint        day)
3805 {
3806   GtkCalendarPrivate *priv;
3807
3808   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3809
3810   priv = calendar->priv;
3811
3812   if (day >= 1 && day <= 31 && !priv->marked_date[day-1])
3813     {
3814       priv->marked_date[day - 1] = TRUE;
3815       priv->num_marked_dates++;
3816       calendar_invalidate_day_num (calendar, day);
3817     }
3818 }
3819
3820 /**
3821  * gtk_calendar_get_day_is_marked:
3822  * @calendar: a #GtkCalendar
3823  * @day: the day number between 1 and 31.
3824  *
3825  * Returns if the @day of the @calendar is already marked.
3826  *
3827  * Returns: whether the day is marked.
3828  *
3829  * Since: 3.0
3830  */
3831 gboolean
3832 gtk_calendar_get_day_is_marked (GtkCalendar *calendar,
3833                                 guint        day)
3834 {
3835   GtkCalendarPrivate *priv;
3836
3837   g_return_val_if_fail (GTK_IS_CALENDAR (calendar), FALSE);
3838
3839   priv = calendar->priv;
3840
3841   if (day >= 1 && day <= 31)
3842     return priv->marked_date[day - 1];
3843
3844   return FALSE;
3845 }
3846
3847 /**
3848  * gtk_calendar_unmark_day:
3849  * @calendar: a #GtkCalendar.
3850  * @day: the day number to unmark between 1 and 31.
3851  *
3852  * Removes the visual marker from a particular day.
3853  */
3854 void
3855 gtk_calendar_unmark_day (GtkCalendar *calendar,
3856                          guint        day)
3857 {
3858   GtkCalendarPrivate *priv;
3859
3860   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3861
3862   priv = calendar->priv;
3863
3864   if (day >= 1 && day <= 31 && priv->marked_date[day-1])
3865     {
3866       priv->marked_date[day - 1] = FALSE;
3867       priv->num_marked_dates--;
3868       calendar_invalidate_day_num (calendar, day);
3869     }
3870 }
3871
3872 /**
3873  * gtk_calendar_get_date:
3874  * @calendar: a #GtkCalendar
3875  * @year: (out) (allow-none): location to store the year as a decimal
3876  *     number (e.g. 2011), or %NULL
3877  * @month: (out) (allow-none): location to store the month number
3878  *     (between 0 and 11), or %NULL
3879  * @day: (out) (allow-none): location to store the day number (between
3880  *     1 and 31), or %NULL
3881  *
3882  * Obtains the selected date from a #GtkCalendar.
3883  */
3884 void
3885 gtk_calendar_get_date (GtkCalendar *calendar,
3886                        guint       *year,
3887                        guint       *month,
3888                        guint       *day)
3889 {
3890   GtkCalendarPrivate *priv;
3891
3892   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3893
3894   priv = calendar->priv;
3895
3896   if (year)
3897     *year = priv->year;
3898
3899   if (month)
3900     *month = priv->month;
3901
3902   if (day)
3903     *day = priv->selected_day;
3904 }
3905
3906 /**
3907  * gtk_calendar_set_detail_func:
3908  * @calendar: a #GtkCalendar.
3909  * @func: a function providing details for each day.
3910  * @data: data to pass to @func invokations.
3911  * @destroy: a function for releasing @data.
3912  *
3913  * Installs a function which provides Pango markup with detail information
3914  * for each day. Examples for such details are holidays or appointments. That
3915  * information is shown below each day when #GtkCalendar:show-details is set.
3916  * A tooltip containing with full detail information is provided, if the entire
3917  * text should not fit into the details area, or if #GtkCalendar:show-details
3918  * is not set.
3919  *
3920  * The size of the details area can be restricted by setting the
3921  * #GtkCalendar:detail-width-chars and #GtkCalendar:detail-height-rows
3922  * properties.
3923  *
3924  * Since: 2.14
3925  */
3926 void
3927 gtk_calendar_set_detail_func (GtkCalendar           *calendar,
3928                               GtkCalendarDetailFunc  func,
3929                               gpointer               data,
3930                               GDestroyNotify         destroy)
3931 {
3932   GtkCalendarPrivate *priv;
3933
3934   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3935
3936   priv = GTK_CALENDAR_GET_PRIVATE (calendar);
3937
3938   if (priv->detail_func_destroy)
3939     priv->detail_func_destroy (priv->detail_func_user_data);
3940
3941   priv->detail_func = func;
3942   priv->detail_func_user_data = data;
3943   priv->detail_func_destroy = destroy;
3944
3945   gtk_widget_set_has_tooltip (GTK_WIDGET (calendar),
3946                               NULL != priv->detail_func);
3947   gtk_widget_queue_resize (GTK_WIDGET (calendar));
3948 }
3949
3950 /**
3951  * gtk_calendar_set_detail_width_chars:
3952  * @calendar: a #GtkCalendar.
3953  * @chars: detail width in characters.
3954  *
3955  * Updates the width of detail cells.
3956  * See #GtkCalendar:detail-width-chars.
3957  *
3958  * Since: 2.14
3959  */
3960 void
3961 gtk_calendar_set_detail_width_chars (GtkCalendar *calendar,
3962                                      gint         chars)
3963 {
3964   GtkCalendarPrivate *priv;
3965
3966   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3967
3968   priv = GTK_CALENDAR_GET_PRIVATE (calendar);
3969
3970   if (chars != priv->detail_width_chars)
3971     {
3972       priv->detail_width_chars = chars;
3973       g_object_notify (G_OBJECT (calendar), "detail-width-chars");
3974       gtk_widget_queue_resize_no_redraw (GTK_WIDGET (calendar));
3975     }
3976 }
3977
3978 /**
3979  * gtk_calendar_set_detail_height_rows:
3980  * @calendar: a #GtkCalendar.
3981  * @rows: detail height in rows.
3982  *
3983  * Updates the height of detail cells.
3984  * See #GtkCalendar:detail-height-rows.
3985  *
3986  * Since: 2.14
3987  */
3988 void
3989 gtk_calendar_set_detail_height_rows (GtkCalendar *calendar,
3990                                      gint         rows)
3991 {
3992   GtkCalendarPrivate *priv;
3993
3994   g_return_if_fail (GTK_IS_CALENDAR (calendar));
3995
3996   priv = GTK_CALENDAR_GET_PRIVATE (calendar);
3997
3998   if (rows != priv->detail_height_rows)
3999     {
4000       priv->detail_height_rows = rows;
4001       g_object_notify (G_OBJECT (calendar), "detail-height-rows");
4002       gtk_widget_queue_resize_no_redraw (GTK_WIDGET (calendar));
4003     }
4004 }
4005
4006 /**
4007  * gtk_calendar_get_detail_width_chars:
4008  * @calendar: a #GtkCalendar.
4009  *
4010  * Queries the width of detail cells, in characters.
4011  * See #GtkCalendar:detail-width-chars.
4012  *
4013  * Since: 2.14
4014  *
4015  * Return value: The width of detail cells, in characters.
4016  */
4017 gint
4018 gtk_calendar_get_detail_width_chars (GtkCalendar *calendar)
4019 {
4020   g_return_val_if_fail (GTK_IS_CALENDAR (calendar), 0);
4021   return GTK_CALENDAR_GET_PRIVATE (calendar)->detail_width_chars;
4022 }
4023
4024 /**
4025  * gtk_calendar_get_detail_height_rows:
4026  * @calendar: a #GtkCalendar.
4027  *
4028  * Queries the height of detail cells, in rows.
4029  * See #GtkCalendar:detail-width-chars.
4030  *
4031  * Since: 2.14
4032  *
4033  * Return value: The height of detail cells, in rows.
4034  */
4035 gint
4036 gtk_calendar_get_detail_height_rows (GtkCalendar *calendar)
4037 {
4038   g_return_val_if_fail (GTK_IS_CALENDAR (calendar), 0);
4039   return GTK_CALENDAR_GET_PRIVATE (calendar)->detail_height_rows;
4040 }