/* * ECalendarItem - canvas item displaying a calendar. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) version 3. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with the program; if not, see * * Authors: * Damon Chaplin * Bolian Yin * * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) */ #ifdef HAVE_CONFIG_H #include #endif #include #include "e-calendar-item.h" #include "ea-widgets.h" #include #include #include #include #include #include #include #include static const gint e_calendar_item_days_in_month[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; #define DAYS_IN_MONTH(year, month) \ e_calendar_item_days_in_month[month] + (((month) == 1 \ && ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))) ? 1 : 0) static void e_calendar_item_dispose (GObject *object); static void e_calendar_item_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec); static void e_calendar_item_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec); static void e_calendar_item_realize (GnomeCanvasItem *item); static void e_calendar_item_unmap (GnomeCanvasItem *item); static void e_calendar_item_update (GnomeCanvasItem *item, const cairo_matrix_t *i2c, gint flags); static void e_calendar_item_draw (GnomeCanvasItem *item, cairo_t *cr, gint x, gint y, gint width, gint height); static void e_calendar_item_draw_month (ECalendarItem *calitem, cairo_t *cr, gint x, gint y, gint width, gint height, gint row, gint col); static void e_calendar_item_draw_day_numbers (ECalendarItem *calitem, cairo_t *cr, gint width, gint height, gint row, gint col, gint year, gint month, gint start_weekday, gint cells_x, gint cells_y); static GnomeCanvasItem *e_calendar_item_point (GnomeCanvasItem *item, gdouble x, gdouble y, gint cx, gint cy); static void e_calendar_item_stop_selecting (ECalendarItem *calitem, guint32 time); static void e_calendar_item_selection_add_days (ECalendarItem *calitem, gint n_days, gboolean multi_selection); static gint e_calendar_item_key_press_event (ECalendarItem *item, GdkEvent *event); static gint e_calendar_item_event (GnomeCanvasItem *item, GdkEvent *event); static void e_calendar_item_bounds (GnomeCanvasItem *item, gdouble *x1, gdouble *y1, gdouble *x2, gdouble *y2); static gboolean e_calendar_item_button_press (ECalendarItem *calitem, GdkEvent *event); static gboolean e_calendar_item_button_release (ECalendarItem *calitem, GdkEvent *event); static gboolean e_calendar_item_motion (ECalendarItem *calitem, GdkEvent *event); static gboolean e_calendar_item_convert_position_to_day (ECalendarItem *calitem, gint x, gint y, gboolean round_empty_positions, gint *month_offset, gint *day, gboolean *entire_week); static void e_calendar_item_get_month_info (ECalendarItem *calitem, gint row, gint col, gint *first_day_offset, gint *days_in_month, gint *days_in_prev_month); static void e_calendar_item_recalc_sizes (ECalendarItem *calitem); static void e_calendar_item_get_day_style (ECalendarItem *calitem, gint year, gint month, gint day, gint day_style, gboolean today, gboolean prev_or_next_month, gboolean selected, gboolean has_focus, gboolean drop_target, GdkColor **bg_color, GdkColor **fg_color, GdkColor **box_color, gboolean *bold, gboolean *italic); static void e_calendar_item_check_selection_end (ECalendarItem *calitem, gint start_month, gint start_day, gint *end_month, gint *end_day); static void e_calendar_item_check_selection_start (ECalendarItem *calitem, gint *start_month, gint *start_day, gint end_month, gint end_day); static void e_calendar_item_add_days_to_selection (ECalendarItem *calitem, gint days); static void e_calendar_item_round_up_selection (ECalendarItem *calitem, gint *month_offset, gint *day); static void e_calendar_item_round_down_selection (ECalendarItem *calitem, gint *month_offset, gint *day); static gint e_calendar_item_get_inclusive_days (ECalendarItem *calitem, gint start_month_offset, gint start_day, gint end_month_offset, gint end_day); static void e_calendar_item_ensure_valid_day (ECalendarItem *calitem, gint *month_offset, gint *day); static gboolean e_calendar_item_ensure_days_visible (ECalendarItem *calitem, gint start_year, gint start_month, gint start_day, gint end_year, gint end_month, gint end_day, gboolean emission); static void e_calendar_item_show_popup_menu (ECalendarItem *calitem, GdkEventButton *event, gint month_offset); static void e_calendar_item_on_menu_item_activate (GtkWidget *menuitem, ECalendarItem *calitem); static void e_calendar_item_position_menu (GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer user_data); static void e_calendar_item_date_range_changed (ECalendarItem *calitem); static void e_calendar_item_queue_signal_emission (ECalendarItem *calitem); static gboolean e_calendar_item_signal_emission_idle_cb (gpointer data); static void e_calendar_item_set_selection_if_emission (ECalendarItem *calitem, const GDate *start_date, const GDate *end_date, gboolean emission); /* Our arguments. */ enum { PROP_0, PROP_YEAR, PROP_MONTH, PROP_X1, PROP_Y1, PROP_X2, PROP_Y2, PROP_FONT_DESC, PROP_WEEK_NUMBER_FONT, PROP_WEEK_NUMBER_FONT_DESC, PROP_ROW_HEIGHT, PROP_COLUMN_WIDTH, PROP_MINIMUM_ROWS, PROP_MINIMUM_COLUMNS, PROP_MAXIMUM_ROWS, PROP_MAXIMUM_COLUMNS, PROP_WEEK_START_DAY, PROP_SHOW_WEEK_NUMBERS, PROP_KEEP_WDAYS_ON_WEEKNUM_CLICK, PROP_MAXIMUM_DAYS_SELECTED, PROP_DAYS_TO_START_WEEK_SELECTION, PROP_MOVE_SELECTION_WHEN_MOVING, PROP_PRESERVE_DAY_WHEN_MOVING, PROP_DISPLAY_POPUP }; enum { DATE_RANGE_CHANGED, SELECTION_CHANGED, SELECTION_PREVIEW_CHANGED, LAST_SIGNAL }; static guint e_calendar_item_signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE_WITH_CODE ( ECalendarItem, e_calendar_item, GNOME_TYPE_CANVAS_ITEM, G_IMPLEMENT_INTERFACE ( E_TYPE_EXTENSIBLE, NULL)) static void e_calendar_item_class_init (ECalendarItemClass *class) { GObjectClass *object_class; GnomeCanvasItemClass *item_class; object_class = G_OBJECT_CLASS (class); object_class->dispose = e_calendar_item_dispose; object_class->get_property = e_calendar_item_get_property; object_class->set_property = e_calendar_item_set_property; item_class = GNOME_CANVAS_ITEM_CLASS (class); item_class->realize = e_calendar_item_realize; item_class->unmap = e_calendar_item_unmap; item_class->update = e_calendar_item_update; item_class->draw = e_calendar_item_draw; item_class->point = e_calendar_item_point; item_class->event = e_calendar_item_event; item_class->bounds = e_calendar_item_bounds; class->date_range_changed = NULL; class->selection_changed = NULL; class->selection_preview_changed = NULL; g_object_class_install_property ( object_class, PROP_YEAR, g_param_spec_int ( "year", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MONTH, g_param_spec_int ( "month", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_X1, g_param_spec_double ( "x1", NULL, NULL, -G_MAXDOUBLE, G_MAXDOUBLE, 0., G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_Y1, g_param_spec_double ( "y1", NULL, NULL, -G_MAXDOUBLE, G_MAXDOUBLE, 0., G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_X2, g_param_spec_double ( "x2", NULL, NULL, -G_MAXDOUBLE, G_MAXDOUBLE, 0., G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_Y2, g_param_spec_double ( "y2", NULL, NULL, -G_MAXDOUBLE, G_MAXDOUBLE, 0., G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_FONT_DESC, g_param_spec_boxed ( "font_desc", NULL, NULL, PANGO_TYPE_FONT_DESCRIPTION, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_WEEK_NUMBER_FONT_DESC, g_param_spec_boxed ( "week_number_font_desc", NULL, NULL, PANGO_TYPE_FONT_DESCRIPTION, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_ROW_HEIGHT, g_param_spec_int ( "row_height", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_COLUMN_WIDTH, g_param_spec_int ( "column_width", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READABLE)); g_object_class_install_property ( object_class, PROP_MINIMUM_ROWS, g_param_spec_int ( "minimum_rows", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MINIMUM_COLUMNS, g_param_spec_int ( "minimum_columns", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MAXIMUM_ROWS, g_param_spec_int ( "maximum_rows", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MAXIMUM_COLUMNS, g_param_spec_int ( "maximum_columns", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_WEEK_START_DAY, g_param_spec_int ( "week_start_day", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_SHOW_WEEK_NUMBERS, g_param_spec_boolean ( "show_week_numbers", NULL, NULL, TRUE, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_KEEP_WDAYS_ON_WEEKNUM_CLICK, g_param_spec_boolean ( "keep_wdays_on_weeknum_click", NULL, NULL, FALSE, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MAXIMUM_DAYS_SELECTED, g_param_spec_int ( "maximum_days_selected", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_DAYS_TO_START_WEEK_SELECTION, g_param_spec_int ( "days_to_start_week_selection", NULL, NULL, G_MININT, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_MOVE_SELECTION_WHEN_MOVING, g_param_spec_boolean ( "move_selection_when_moving", NULL, NULL, TRUE, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_PRESERVE_DAY_WHEN_MOVING, g_param_spec_boolean ( "preserve_day_when_moving", NULL, NULL, TRUE, G_PARAM_READWRITE)); g_object_class_install_property ( object_class, PROP_DISPLAY_POPUP, g_param_spec_boolean ( "display_popup", NULL, NULL, TRUE, G_PARAM_READWRITE)); e_calendar_item_signals[DATE_RANGE_CHANGED] = g_signal_new ("date_range_changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ECalendarItemClass, date_range_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); e_calendar_item_signals[SELECTION_CHANGED] = g_signal_new ("selection_changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ECalendarItemClass, selection_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); e_calendar_item_signals[SELECTION_PREVIEW_CHANGED] = g_signal_new ("selection_preview_changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ECalendarItemClass, selection_preview_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); e_calendar_item_a11y_init (); } static void e_calendar_item_init (ECalendarItem *calitem) { struct tm *tmp_tm; time_t t; /* Set the default time to the current month. */ t = time (NULL); tmp_tm = localtime (&t); calitem->year = tmp_tm->tm_year + 1900; calitem->month = tmp_tm->tm_mon; calitem->styles = NULL; calitem->min_cols = 1; calitem->min_rows = 1; calitem->max_cols = -1; calitem->max_rows = -1; calitem->rows = 0; calitem->cols = 0; calitem->show_week_numbers = FALSE; calitem->keep_wdays_on_weeknum_click = FALSE; calitem->week_start_day = 0; calitem->expand = TRUE; calitem->max_days_selected = 1; calitem->days_to_start_week_selection = -1; calitem->move_selection_when_moving = TRUE; calitem->preserve_day_when_moving = FALSE; calitem->display_popup = TRUE; calitem->x1 = 0.0; calitem->y1 = 0.0; calitem->x2 = 0.0; calitem->y2 = 0.0; calitem->selecting = FALSE; calitem->selecting_axis = NULL; calitem->selection_set = FALSE; calitem->selection_changed = FALSE; calitem->date_range_changed = FALSE; calitem->style_callback = NULL; calitem->style_callback_data = NULL; calitem->style_callback_destroy = NULL; calitem->time_callback = NULL; calitem->time_callback_data = NULL; calitem->time_callback_destroy = NULL; calitem->signal_emission_idle_id = 0; } static void e_calendar_item_dispose (GObject *object) { ECalendarItem *calitem; calitem = E_CALENDAR_ITEM (object); e_calendar_item_set_style_callback (calitem, NULL, NULL, NULL); e_calendar_item_set_get_time_callback (calitem, NULL, NULL, NULL); if (calitem->styles) { g_free (calitem->styles); calitem->styles = NULL; } if (calitem->signal_emission_idle_id > 0) { g_source_remove (calitem->signal_emission_idle_id); calitem->signal_emission_idle_id = -1; } if (calitem->font_desc) { pango_font_description_free (calitem->font_desc); calitem->font_desc = NULL; } if (calitem->week_number_font_desc) { pango_font_description_free (calitem->week_number_font_desc); calitem->week_number_font_desc = NULL; } if (calitem->selecting_axis) g_free (calitem->selecting_axis); G_OBJECT_CLASS (e_calendar_item_parent_class)->dispose (object); } static void e_calendar_item_get_property (GObject *object, guint property_id, GValue *value, GParamSpec *pspec) { ECalendarItem *calitem; calitem = E_CALENDAR_ITEM (object); switch (property_id) { case PROP_YEAR: g_value_set_int (value, calitem->year); return; case PROP_MONTH: g_value_set_int (value, calitem->month); return; case PROP_X1: g_value_set_double (value, calitem->x1); return; case PROP_Y1: g_value_set_double (value, calitem->y1); return; case PROP_X2: g_value_set_double (value, calitem->x2); return; case PROP_Y2: g_value_set_double (value, calitem->y2); return; case PROP_FONT_DESC: g_value_set_boxed (value, calitem->font_desc); return; case PROP_WEEK_NUMBER_FONT_DESC: g_value_set_boxed (value, calitem->week_number_font_desc); return; case PROP_ROW_HEIGHT: e_calendar_item_recalc_sizes (calitem); g_value_set_int (value, calitem->min_month_height); return; case PROP_COLUMN_WIDTH: e_calendar_item_recalc_sizes (calitem); g_value_set_int (value, calitem->min_month_width); return; case PROP_MINIMUM_ROWS: g_value_set_int (value, calitem->min_rows); return; case PROP_MINIMUM_COLUMNS: g_value_set_int (value, calitem->min_cols); return; case PROP_MAXIMUM_ROWS: g_value_set_int (value, calitem->max_rows); return; case PROP_MAXIMUM_COLUMNS: g_value_set_int (value, calitem->max_cols); return; case PROP_WEEK_START_DAY: g_value_set_int (value, calitem->week_start_day); return; case PROP_SHOW_WEEK_NUMBERS: g_value_set_boolean (value, calitem->show_week_numbers); return; case PROP_KEEP_WDAYS_ON_WEEKNUM_CLICK: g_value_set_boolean (value, calitem->keep_wdays_on_weeknum_click); return; case PROP_MAXIMUM_DAYS_SELECTED: g_value_set_int (value, e_calendar_item_get_max_days_sel (calitem)); return; case PROP_DAYS_TO_START_WEEK_SELECTION: g_value_set_int (value, e_calendar_item_get_days_start_week_sel (calitem)); return; case PROP_MOVE_SELECTION_WHEN_MOVING: g_value_set_boolean (value, calitem->move_selection_when_moving); return; case PROP_PRESERVE_DAY_WHEN_MOVING: g_value_set_boolean (value, calitem->preserve_day_when_moving); return; case PROP_DISPLAY_POPUP: g_value_set_boolean (value, e_calendar_item_get_display_popup (calitem)); return; } G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); } static void e_calendar_item_set_property (GObject *object, guint property_id, const GValue *value, GParamSpec *pspec) { GnomeCanvasItem *item; ECalendarItem *calitem; PangoFontDescription *font_desc; gdouble dvalue; gint ivalue; gboolean bvalue; item = GNOME_CANVAS_ITEM (object); calitem = E_CALENDAR_ITEM (object); switch (property_id) { case PROP_YEAR: ivalue = g_value_get_int (value); e_calendar_item_set_first_month (calitem, ivalue, calitem->month); return; case PROP_MONTH: ivalue = g_value_get_int (value); e_calendar_item_set_first_month (calitem, calitem->year, ivalue); return; case PROP_X1: dvalue = g_value_get_double (value); if (calitem->x1 != dvalue) { calitem->x1 = dvalue; gnome_canvas_item_request_update (item); } return; case PROP_Y1: dvalue = g_value_get_double (value); if (calitem->y1 != dvalue) { calitem->y1 = dvalue; gnome_canvas_item_request_update (item); } return; case PROP_X2: dvalue = g_value_get_double (value); if (calitem->x2 != dvalue) { calitem->x2 = dvalue; gnome_canvas_item_request_update (item); } return; case PROP_Y2: dvalue = g_value_get_double (value); if (calitem->y2 != dvalue) { calitem->y2 = dvalue; gnome_canvas_item_request_update (item); } return; case PROP_FONT_DESC: font_desc = g_value_get_boxed (value); if (calitem->font_desc) pango_font_description_free (calitem->font_desc); calitem->font_desc = pango_font_description_copy (font_desc); gnome_canvas_item_request_update (item); return; case PROP_WEEK_NUMBER_FONT_DESC: font_desc = g_value_get_boxed (value); if (calitem->week_number_font_desc) pango_font_description_free (calitem->week_number_font_desc); calitem->week_number_font_desc = pango_font_description_copy (font_desc); gnome_canvas_item_request_update (item); return; case PROP_MINIMUM_ROWS: ivalue = g_value_get_int (value); ivalue = MAX (1, ivalue); if (calitem->min_rows != ivalue) { calitem->min_rows = ivalue; gnome_canvas_item_request_update (item); } return; case PROP_MINIMUM_COLUMNS: ivalue = g_value_get_int (value); ivalue = MAX (1, ivalue); if (calitem->min_cols != ivalue) { calitem->min_cols = ivalue; gnome_canvas_item_request_update (item); } return; case PROP_MAXIMUM_ROWS: ivalue = g_value_get_int (value); if (calitem->max_rows != ivalue) { calitem->max_rows = ivalue; gnome_canvas_item_request_update (item); } return; case PROP_MAXIMUM_COLUMNS: ivalue = g_value_get_int (value); if (calitem->max_cols != ivalue) { calitem->max_cols = ivalue; gnome_canvas_item_request_update (item); } return; case PROP_WEEK_START_DAY: ivalue = g_value_get_int (value); if (calitem->week_start_day != ivalue) { calitem->week_start_day = ivalue; gnome_canvas_item_request_update (item); } return; case PROP_SHOW_WEEK_NUMBERS: bvalue = g_value_get_boolean (value); if (calitem->show_week_numbers != bvalue) { calitem->show_week_numbers = bvalue; gnome_canvas_item_request_update (item); } return; case PROP_KEEP_WDAYS_ON_WEEKNUM_CLICK: calitem->keep_wdays_on_weeknum_click = g_value_get_boolean (value); return; case PROP_MAXIMUM_DAYS_SELECTED: ivalue = g_value_get_int (value); e_calendar_item_set_max_days_sel (calitem, ivalue); return; case PROP_DAYS_TO_START_WEEK_SELECTION: ivalue = g_value_get_int (value); e_calendar_item_set_days_start_week_sel (calitem, ivalue); return; case PROP_MOVE_SELECTION_WHEN_MOVING: bvalue = g_value_get_boolean (value); calitem->move_selection_when_moving = bvalue; return; case PROP_PRESERVE_DAY_WHEN_MOVING: bvalue = g_value_get_boolean (value); calitem->preserve_day_when_moving = bvalue; return; case PROP_DISPLAY_POPUP: bvalue = g_value_get_boolean (value); e_calendar_item_set_display_popup (calitem, bvalue); return; } G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); } static void e_calendar_item_realize (GnomeCanvasItem *item) { ECalendarItem *calitem; if (GNOME_CANVAS_ITEM_CLASS (e_calendar_item_parent_class)->realize) (* GNOME_CANVAS_ITEM_CLASS (e_calendar_item_parent_class)->realize) (item); calitem = E_CALENDAR_ITEM (item); e_calendar_item_style_set (GTK_WIDGET (item->canvas), calitem); e_extensible_load_extensions (E_EXTENSIBLE (calitem)); } static void e_calendar_item_unmap (GnomeCanvasItem *item) { ECalendarItem *calitem; calitem = E_CALENDAR_ITEM (item); if (calitem->selecting) { gnome_canvas_item_ungrab (item, GDK_CURRENT_TIME); calitem->selecting = FALSE; } if (GNOME_CANVAS_ITEM_CLASS (e_calendar_item_parent_class)->unmap) (* GNOME_CANVAS_ITEM_CLASS (e_calendar_item_parent_class)->unmap) (item); } static void e_calendar_item_update (GnomeCanvasItem *item, const cairo_matrix_t *i2c, gint flags) { GnomeCanvasItemClass *item_class; ECalendarItem *calitem; GtkStyle *style; gint char_height, width, height, space, space_per_cal, space_per_cell; gint rows, cols, xthickness, ythickness; PangoFontDescription *font_desc; PangoContext *pango_context; PangoFontMetrics *font_metrics; item_class = GNOME_CANVAS_ITEM_CLASS (e_calendar_item_parent_class); if (item_class->update != NULL) item_class->update (item, i2c, flags); calitem = E_CALENDAR_ITEM (item); style = gtk_widget_get_style (GTK_WIDGET (item->canvas)); xthickness = style->xthickness; ythickness = style->ythickness; item->x1 = calitem->x1; item->y1 = calitem->y1; item->x2 = calitem->x2 >= calitem->x1 ? calitem->x2 : calitem->x1; item->y2 = calitem->y2 >= calitem->y1 ? calitem->y2 : calitem->y1; /* Set up Pango prerequisites */ font_desc = style->font_desc; pango_context = gtk_widget_get_pango_context (GTK_WIDGET (item->canvas)); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); /* * Calculate the new layout of the calendar. */ /* Make sure the minimum row width & cell height and the widths of * all the digits and characters are up to date. */ e_calendar_item_recalc_sizes (calitem); /* Calculate how many rows & cols we can fit in. */ width = item->x2 - item->x1; height = item->y2 - item->y1; width -= xthickness * 2; height -= ythickness * 2; if (calitem->min_month_height == 0) rows = 1; else rows = height / calitem->min_month_height; rows = MAX (rows, calitem->min_rows); if (calitem->max_rows > 0) rows = MIN (rows, calitem->max_rows); if (calitem->min_month_width == 0) cols = 1; else cols = width / calitem->min_month_width; cols = MAX (cols, calitem->min_cols); if (calitem->max_cols > 0) cols = MIN (cols, calitem->max_cols); if (rows != calitem->rows || cols != calitem->cols) e_calendar_item_date_range_changed (calitem); calitem->rows = rows; calitem->cols = cols; /* Split up the empty space according to the configuration. * If the calendar is set to expand, we divide the space between the * cells and the spaces around the calendar, otherwise we place the * calendars in the center of the available area. */ char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); calitem->month_width = calitem->min_month_width; calitem->month_height = calitem->min_month_height; calitem->cell_width = MAX (calitem->max_day_width, (calitem->max_digit_width * 2)) + E_CALENDAR_ITEM_MIN_CELL_XPAD; calitem->cell_height = char_height + E_CALENDAR_ITEM_MIN_CELL_YPAD; calitem->month_tpad = 0; calitem->month_bpad = 0; calitem->month_lpad = 0; calitem->month_rpad = 0; space = height - calitem->rows * calitem->month_height; if (space > 0) { space_per_cal = space / calitem->rows; calitem->month_height += space_per_cal; if (calitem->expand) { space_per_cell = space_per_cal / E_CALENDAR_ROWS_PER_MONTH; calitem->cell_height += space_per_cell; space_per_cal -= space_per_cell * E_CALENDAR_ROWS_PER_MONTH; } calitem->month_tpad = space_per_cal / 2; calitem->month_bpad = space_per_cal - calitem->month_tpad; } space = width - calitem->cols * calitem->month_width; if (space > 0) { space_per_cal = space / calitem->cols; calitem->month_width += space_per_cal; space -= space_per_cal * calitem->cols; if (calitem->expand) { space_per_cell = space_per_cal / E_CALENDAR_COLS_PER_MONTH; calitem->cell_width += space_per_cell; space_per_cal -= space_per_cell * E_CALENDAR_COLS_PER_MONTH; } calitem->month_lpad = space_per_cal / 2; calitem->month_rpad = space_per_cal - calitem->month_lpad; } space = MAX (0, space); calitem->x_offset = space / 2; gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2); pango_font_metrics_unref (font_metrics); } /* * DRAWING ROUTINES - functions to paint the canvas item. */ static void e_calendar_item_draw (GnomeCanvasItem *canvas_item, cairo_t *cr, gint x, gint y, gint width, gint height) { ECalendarItem *calitem; GtkStyle *style; gint char_height, row, col, row_y, bar_height, col_x; gint xthickness, ythickness; PangoFontDescription *font_desc; PangoContext *pango_context; PangoFontMetrics *font_metrics; GdkColor base, bg; #if 0 g_print ("In e_calendar_item_draw %i,%i %ix%i\n", x, y, width, height); #endif calitem = E_CALENDAR_ITEM (canvas_item); style = gtk_widget_get_style (GTK_WIDGET (canvas_item->canvas)); /* Set up Pango prerequisites */ font_desc = calitem->font_desc; if (!font_desc) font_desc = style->font_desc; pango_context = gtk_widget_get_pango_context (GTK_WIDGET (canvas_item->canvas)); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); xthickness = style->xthickness; ythickness = style->ythickness; base = style->base[GTK_STATE_NORMAL]; bg = style->bg[GTK_STATE_NORMAL]; /* Clear the entire background. */ cairo_save (cr); gdk_cairo_set_source_color (cr, &base); cairo_rectangle (cr, calitem->x1 - x, calitem->y1 - y, calitem->x2 - calitem->x1 + 1, calitem->y2 - calitem->y1 + 1); cairo_fill (cr); cairo_restore (cr); /* Draw the shadow around the entire item. */ gtk_paint_shadow (style, cr, GTK_STATE_NORMAL, GTK_SHADOW_IN, NULL, "entry", calitem->x1 - x, calitem->y1 - y, calitem->x2 - calitem->x1 + 1, calitem->y2 - calitem->y1 + 1); row_y = canvas_item->y1 + ythickness; bar_height = ythickness * 2 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME; for (row = 0; row < calitem->rows; row++) { /* Draw the background for the title bars and the shadow around * it, and the vertical lines between columns. */ cairo_save (cr); gdk_cairo_set_source_color (cr, &bg); cairo_rectangle (cr, calitem->x1 + xthickness - x, row_y - y, calitem->x2 - calitem->x1 + 1 - xthickness * 2, bar_height); cairo_fill (cr); cairo_restore (cr); gtk_paint_shadow (style, cr, GTK_STATE_NORMAL, GTK_SHADOW_OUT, NULL, "calendar-header", calitem->x1 + xthickness - x, row_y - y, calitem->x2 - calitem->x1 + 1 - xthickness * 2, bar_height); for (col = 0; col < calitem->cols; col++) { if (col != 0) { col_x = calitem->x1 + calitem->x_offset + calitem->month_width * col; gtk_paint_vline (style, cr, GTK_STATE_NORMAL, NULL, "calendar-separator", row_y + ythickness + 1 - y, row_y + bar_height - ythickness - 2 - y, col_x - 1 - x); } e_calendar_item_draw_month (calitem, cr, x, y, width, height, row, col); } row_y += calitem->month_height; } pango_font_metrics_unref (font_metrics); } static void layout_set_day_text (ECalendarItem *calitem, PangoLayout *layout, gint day_index) { const gchar *abbr_name; /* day_index: 0 = Monday ... 6 = Sunday */ abbr_name = e_get_weekday_name (day_index + 1, TRUE); pango_layout_set_text (layout, abbr_name, -1); } static void e_calendar_item_draw_month (ECalendarItem *calitem, cairo_t *cr, gint x, gint y, gint width, gint height, gint row, gint col) { GnomeCanvasItem *item; GtkWidget *widget; GtkStyle *style; PangoFontDescription *font_desc; struct tm tmp_tm; GdkRectangle clip_rect; gint char_height, xthickness, ythickness, start_weekday; gint year, month; gint month_x, month_y, month_w, month_h; gint min_x, max_x, text_x, text_y; gint day, day_index, cells_x, cells_y, min_cell_width, text_width; gint clip_width, clip_height; gchar buffer[64]; PangoContext *pango_context; PangoFontMetrics *font_metrics; PangoLayout *layout; #if 0 g_print ("In e_calendar_item_draw_month: %i,%i %ix%i row:%i col:%i\n", x, y, width, height, row, col); #endif item = GNOME_CANVAS_ITEM (calitem); widget = GTK_WIDGET (item->canvas); style = gtk_widget_get_style (widget); /* Set up Pango prerequisites */ font_desc = calitem->font_desc; if (!font_desc) font_desc = style->font_desc; pango_context = gtk_widget_get_pango_context (widget); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); xthickness = style->xthickness; ythickness = style->ythickness; pango_font_metrics_unref (font_metrics); /* Calculate the top-left position of the entire month display. */ month_x = item->x1 + xthickness + calitem->x_offset + ( (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ? (calitem->cols - 1 - col) : col ) * calitem->month_width - x; month_w = item->x2 - item->x1 - xthickness * 2; month_w = MIN (month_w, calitem->month_width); month_y = item->y1 + ythickness + row * calitem->month_height - y; month_h = item->y2 - item->y1 - ythickness * 2; month_h = MIN (month_h, calitem->month_height); /* Just return if the month is outside the given area. */ if (month_x >= width || month_x + calitem->month_width <= 0 || month_y >= height || month_y + calitem->month_height <= 0) return; month = calitem->month + row * calitem->cols + col; year = calitem->year + month / 12; month %= 12; /* Draw the month name & year, with clipping. Note that the top row * needs extra space around it for the buttons. */ layout = gtk_widget_create_pango_layout (widget, NULL); if (row == 0 && col == 0) min_x = E_CALENDAR_ITEM_XPAD_BEFORE_MONTH_NAME_WITH_BUTTON; else min_x = E_CALENDAR_ITEM_XPAD_BEFORE_MONTH_NAME; max_x = month_w; if (row == 0 && col == calitem->cols - 1) max_x -= E_CALENDAR_ITEM_XPAD_AFTER_MONTH_NAME_WITH_BUTTON; else max_x -= E_CALENDAR_ITEM_XPAD_AFTER_MONTH_NAME; text_y = month_y + style->ythickness + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME; clip_rect.x = month_x + min_x; clip_rect.x = MAX (0, clip_rect.x); clip_rect.y = MAX (0, text_y); memset (&tmp_tm, 0, sizeof (tmp_tm)); tmp_tm.tm_year = year - 1900; tmp_tm.tm_mon = month; tmp_tm.tm_mday = 1; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); start_weekday = (tmp_tm.tm_wday + 6) % 7; if (month_x + max_x - clip_rect.x > 0) { cairo_save (cr); clip_rect.width = month_x + max_x - clip_rect.x; clip_rect.height = text_y + char_height - clip_rect.y; gdk_cairo_rectangle (cr, &clip_rect); cairo_clip (cr); /* This is a strftime() format. %B = Month name, %Y = Year. */ e_utf8_strftime (buffer, sizeof (buffer), _("%B %Y"), &tmp_tm); pango_layout_set_font_description (layout, font_desc); pango_layout_set_text (layout, buffer, -1); /* Ideally we place the text centered in the month, but we * won't go to the left of the minimum x position. */ pango_layout_get_pixel_size (layout, &text_width, NULL); text_x = (calitem->month_width - text_width) / 2; text_x = MAX (min_x, text_x); gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]); cairo_move_to (cr, month_x + text_x, text_y); pango_cairo_show_layout (cr, layout); cairo_restore (cr); } /* Set the clip rectangle for the main month display. */ clip_rect.x = MAX (0, month_x); clip_rect.y = MAX (0, month_y); clip_width = month_x + month_w - clip_rect.x; clip_height = month_y + month_h - clip_rect.y; if (clip_width <= 0 || clip_height <= 0) { g_object_unref (layout); return; } clip_rect.width = clip_width; clip_rect.height = clip_height; cairo_save (cr); gdk_cairo_rectangle (cr, &clip_rect); cairo_clip (cr); /* Draw the day initials across the top of the month. */ min_cell_width = MAX (calitem->max_day_width, (calitem->max_digit_width * 2)) + E_CALENDAR_ITEM_MIN_CELL_XPAD; cells_x = month_x + E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS + calitem->month_lpad + E_CALENDAR_ITEM_XPAD_BEFORE_CELLS; if (calitem->show_week_numbers) cells_x += calitem->max_week_number_digit_width * 2 + E_CALENDAR_ITEM_XPAD_AFTER_WEEK_NUMBERS + 1; text_x = cells_x + calitem->cell_width - (calitem->cell_width - min_cell_width) / 2; text_x -= E_CALENDAR_ITEM_MIN_CELL_XPAD / 2; text_y = month_y + ythickness * 2 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME + E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS + calitem->month_tpad; cells_y = text_y + char_height + E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS + 1 + E_CALENDAR_ITEM_YPAD_ABOVE_CELLS; cairo_save (cr); gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_SELECTED]); cairo_rectangle (cr, cells_x , text_y - E_CALENDAR_ITEM_YPAD_ABOVE_CELLS - 1, calitem->cell_width * 7 , cells_y - text_y ); cairo_fill (cr); cairo_restore (cr); day_index = calitem->week_start_day; pango_layout_set_font_description (layout, font_desc); if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) text_x += (7 - 1) * calitem->cell_width; gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_ACTIVE]); for (day = 0; day < 7; day++) { cairo_save (cr); layout_set_day_text (calitem, layout, day_index); cairo_move_to (cr, text_x - calitem->day_widths[day_index], text_y); pango_cairo_show_layout (cr, layout); text_x += (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ? -calitem->cell_width : calitem->cell_width; day_index++; if (day_index == 7) day_index = 0; cairo_restore (cr); } /* Draw the rectangle around the week number. */ if (calitem->show_week_numbers) { cairo_save (cr); gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_SELECTED]); cairo_rectangle (cr, cells_x, cells_y - (cells_y - text_y + 2) , -20, E_CALENDAR_ROWS_PER_MONTH * calitem->cell_height + 18); cairo_fill (cr); cairo_restore (cr); } e_calendar_item_draw_day_numbers ( calitem, cr, width, height, row, col, year, month, start_weekday, cells_x, cells_y); g_object_unref (layout); cairo_restore (cr); } static const gchar * get_digit_fomat (void) { #ifdef HAVE_GNU_GET_LIBC_VERSION #include const gchar *libc_version = gnu_get_libc_version (); gchar **split = g_strsplit (libc_version, ".", -1); gint major = 0; gint minor = 0; gint revision = 0; major = atoi (split[0]); minor = atoi (split[1]); if (g_strv_length (split) > 2) revision = atoi (split[2]); g_strfreev (split); if (major > 2 || minor > 2 || (minor == 2 && revision > 2)) { return "%Id"; } #endif return "%d"; } static void e_calendar_item_draw_day_numbers (ECalendarItem *calitem, cairo_t *cr, gint width, gint height, gint row, gint col, gint year, gint month, gint start_weekday, gint cells_x, gint cells_y) { GnomeCanvasItem *item; GtkWidget *widget; GtkStyle *style; PangoFontDescription *font_desc; GdkColor *bg_color, *fg_color, *box_color; struct tm today_tm; time_t t; gint char_height, min_cell_width, min_cell_height; gint day_num, drow, dcol, day_x, day_y; gint text_x, text_y; gint num_chars, digit; gint week_num, mon, days_from_week_start; gint years[3], months[3], days_in_month[3]; gboolean today, selected, has_focus, drop_target = FALSE; gboolean bold, italic, draw_day, finished = FALSE; gint today_year, today_month, today_mday, month_offset; gchar buffer[9]; gint day_style = 0; PangoContext *pango_context; PangoFontMetrics *font_metrics; PangoLayout *layout; item = GNOME_CANVAS_ITEM (calitem); widget = GTK_WIDGET (item->canvas); style = gtk_widget_get_style (widget); /* Set up Pango prerequisites */ font_desc = calitem->font_desc; if (!font_desc) font_desc = style->font_desc; pango_context = gtk_widget_get_pango_context (widget); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); min_cell_width = MAX (calitem->max_day_width, (calitem->max_digit_width * 2)) + E_CALENDAR_ITEM_MIN_CELL_XPAD; min_cell_height = char_height + E_CALENDAR_ITEM_MIN_CELL_YPAD; layout = pango_cairo_create_layout (cr); /* Calculate the number of days in the previous, current, and next * months. */ years[0] = years[1] = years[2] = year; months[0] = month - 1; months[1] = month; months[2] = month + 1; if (months[0] == -1) { months[0] = 11; years[0]--; } if (months[2] == 12) { months[2] = 0; years[2]++; } days_in_month[0] = DAYS_IN_MONTH (years[0], months[0]); days_in_month[1] = DAYS_IN_MONTH (years[1], months[1]); days_in_month[2] = DAYS_IN_MONTH (years[2], months[2]); /* Mon 0 is the previous month, which we may show the end of. Mon 1 is * the current month, and mon 2 is the next month. */ mon = 0; month_offset = row * calitem->cols + col - 1; day_num = days_in_month[0]; days_from_week_start = (start_weekday + 7 - calitem->week_start_day) % 7; /* For the top-left month we show the end of the previous month, and * if the new month starts on the first day of the week we show a * complete week from the previous month. */ if (days_from_week_start == 0) { if (row == 0 && col == 0) { day_num -= 6; } else { mon++; month_offset++; day_num = 1; } } else { day_num -= days_from_week_start - 1; } /* Get today's date, so we can highlight it. */ if (calitem->time_callback) { today_tm = (*calitem->time_callback) (calitem, calitem->time_callback_data); } else { t = time (NULL); today_tm = *localtime (&t); } today_year = today_tm.tm_year + 1900; today_month = today_tm.tm_mon; today_mday = today_tm.tm_mday; /* We usually skip the last days of the previous month (mon = 0), * except for the top-left month displayed. */ draw_day = (mon == 1 || (row == 0 && col == 0)); for (drow = 0; drow < 6; drow++) { /* Draw the week number. */ if (calitem->show_week_numbers) { week_num = e_calendar_item_get_week_number (calitem, day_num, months[mon], years[mon]); text_x = cells_x - E_CALENDAR_ITEM_XPAD_BEFORE_CELLS - 1 - E_CALENDAR_ITEM_XPAD_AFTER_WEEK_NUMBERS; text_y = cells_y + drow * calitem->cell_height + + (calitem->cell_height - min_cell_height + 1) / 2; num_chars = 0; if (week_num >= 10) { digit = week_num / 10; text_x -= calitem->week_number_digit_widths[digit]; num_chars += sprintf (&buffer[num_chars], get_digit_fomat (), digit); } digit = week_num % 10; text_x -= calitem->week_number_digit_widths[digit] + 6; num_chars += sprintf (&buffer[num_chars], get_digit_fomat (), digit); cairo_save (cr); gdk_cairo_set_source_color (cr, &style->text[GTK_STATE_ACTIVE]); pango_layout_set_font_description (layout, font_desc); pango_layout_set_text (layout, buffer, num_chars); cairo_move_to (cr, text_x, text_y); pango_cairo_update_layout (cr, layout); pango_cairo_show_layout (cr, layout); cairo_restore (cr); } for (dcol = 0; dcol < 7; dcol++) { if (draw_day) { day_x = cells_x + ( (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ? 7 - 1 - dcol : dcol ) * calitem->cell_width; day_y = cells_y + drow * calitem->cell_height; today = years[mon] == today_year && months[mon] == today_month && day_num == today_mday; selected = calitem->selection_set && (calitem->selection_start_month_offset < month_offset || (calitem->selection_start_month_offset == month_offset && calitem->selection_start_day <= day_num)) && (calitem->selection_end_month_offset > month_offset || (calitem->selection_end_month_offset == month_offset && calitem->selection_end_day >= day_num)); if (calitem->styles) day_style = calitem->styles[(month_offset + 1) * 32 + day_num]; /* Get the colors & style to use for the day.*/ if ((gtk_widget_has_focus (GTK_WIDGET (item->canvas))) && item->canvas->focused_item == item) has_focus = TRUE; else has_focus = FALSE; bold = FALSE; italic = FALSE; if (calitem->style_callback) (*calitem->style_callback) (calitem, years[mon], months[mon], day_num, day_style, today, mon != 1, selected, has_focus, drop_target, &bg_color, &fg_color, &box_color, &bold, &italic, calitem->style_callback_data); else e_calendar_item_get_day_style (calitem, years[mon], months[mon], day_num, day_style, today, mon != 1, selected, has_focus, drop_target, &bg_color, &fg_color, &box_color, &bold, &italic); /* Draw the background, if set. */ if (bg_color) { cairo_save (cr); gdk_cairo_set_source_color (cr, bg_color); cairo_rectangle (cr, day_x , day_y, calitem->cell_width, calitem->cell_height); cairo_fill (cr); cairo_restore (cr); } /* Draw the box, if set. */ if (box_color) { cairo_save (cr); gdk_cairo_set_source_color (cr, box_color); cairo_rectangle (cr, day_x , day_y, calitem->cell_width - 1, calitem->cell_height - 1); cairo_stroke (cr); cairo_restore (cr); } /* Draw the 1- or 2-digit day number. */ day_x += calitem->cell_width - (calitem->cell_width - min_cell_width) / 2; day_x -= E_CALENDAR_ITEM_MIN_CELL_XPAD / 2; day_y += (calitem->cell_height - min_cell_height + 1) / 2; day_y += E_CALENDAR_ITEM_MIN_CELL_YPAD / 2; num_chars = 0; if (day_num >= 10) { digit = day_num / 10; day_x -= calitem->digit_widths[digit]; num_chars += sprintf ( &buffer[num_chars], get_digit_fomat (), digit); } digit = day_num % 10; day_x -= calitem->digit_widths[digit]; num_chars += sprintf (&buffer[num_chars], get_digit_fomat (), digit); cairo_save (cr); if (fg_color) { gdk_cairo_set_source_color (cr, fg_color); } else { gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]); } if (bold) { pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD); } else { pango_font_description_set_weight (font_desc, PANGO_WEIGHT_NORMAL); } if (italic) { pango_font_description_set_style (font_desc, PANGO_STYLE_ITALIC); } else { pango_font_description_set_style (font_desc, PANGO_STYLE_NORMAL); } pango_layout_set_font_description (layout, font_desc); pango_layout_set_text (layout, buffer, num_chars); cairo_move_to (cr, day_x, day_y); pango_cairo_update_layout (cr, layout); pango_cairo_show_layout (cr, layout); cairo_restore (cr); } /* See if we've reached the end of a month. */ if (day_num == days_in_month[mon]) { month_offset++; mon++; /* We only draw the start of the next month * for the bottom-right month displayed. */ if (mon == 2 && (row != calitem->rows - 1 || col != calitem->cols - 1)) { /* Set a flag so we exit the loop. */ finished = TRUE; break; } day_num = 1; draw_day = TRUE; } else { day_num++; } } /* Exit the loop if the flag is set. */ if (finished) break; } /* Reset pango weight and style */ pango_font_description_set_weight (font_desc, PANGO_WEIGHT_NORMAL); pango_font_description_set_style (font_desc, PANGO_STYLE_NORMAL); g_object_unref (layout); pango_font_metrics_unref (font_metrics); } gint e_calendar_item_get_week_number (ECalendarItem *calitem, gint day, gint month, gint year) { GDate date; guint weekday, yearday; gint week_num; g_date_clear (&date, 1); g_date_set_dmy (&date, day, month + 1, year); /* This results in a value of 0 (Monday) - 6 (Sunday). (or -1 on error - oops!!) */ weekday = g_date_get_weekday (&date) - 1; if (weekday > 0) { /* we want always point to nearest Monday, as the first day of the week, * regardless of the calendar's week_start_day */ if (weekday >= 3) g_date_add_days (&date, 7 - weekday); else g_date_subtract_days (&date, weekday); } /* Calculate the day of the year, from 0 to 365. */ yearday = g_date_get_day_of_year (&date) - 1; /* If the week starts on or after 29th December, it is week 1 of the * next year, since there are 4 days in the next year. */ if (g_date_get_month (&date) == 12 && g_date_get_day (&date) >= 29) return 1; /* Calculate the week number, from 0. */ week_num = yearday / 7; /* If the first week starts on or after Jan 5th, then we need to add * 1 since the previous week will really be the first week. */ if (yearday % 7 >= 4) week_num++; /* Add 1 so week numbers are from 1 to 53. */ return week_num + 1; } /* This is supposed to return the nearest item the the point and the distance. * Since we are the only item we just return ourself and 0 for the distance. * This is needed so that we get button/motion events. */ static GnomeCanvasItem * e_calendar_item_point (GnomeCanvasItem *item, gdouble x, gdouble y, gint cx, gint cy) { return item; } static void e_calendar_item_stop_selecting (ECalendarItem *calitem, guint32 time) { if (!calitem->selecting) return; gnome_canvas_item_ungrab (GNOME_CANVAS_ITEM (calitem), time); calitem->selecting = FALSE; /* If the user selects the grayed dates before the first month or * after the last month, we move backwards or forwards one month. * The set_month () call should take care of updating the selection. */ if (calitem->selection_end_month_offset == -1) e_calendar_item_set_first_month (calitem, calitem->year, calitem->month - 1); else if (calitem->selection_start_month_offset == calitem->rows * calitem->cols) e_calendar_item_set_first_month (calitem, calitem->year, calitem->month + 1); calitem->selection_changed = TRUE; if (calitem->selecting_axis) { g_free (calitem->selecting_axis); calitem->selecting_axis = NULL; } e_calendar_item_queue_signal_emission (calitem); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } static void e_calendar_item_selection_add_days (ECalendarItem *calitem, gint n_days, gboolean multi_selection) { GDate gdate_start, gdate_end; g_return_if_fail (E_IS_CALENDAR_ITEM (calitem)); if (!e_calendar_item_get_selection (calitem, &gdate_start, &gdate_end)) { /* We set the date to the first day of the month */ g_date_set_dmy (&gdate_start, 1, calitem->month + 1, calitem->year); gdate_end = gdate_start; } if (multi_selection && calitem->max_days_selected > 1) { gint days_between; days_between = g_date_days_between (&gdate_start, &gdate_end); if (!calitem->selecting_axis) { calitem->selecting_axis = g_new (GDate, 1); *(calitem->selecting_axis) = gdate_start; } if ((days_between != 0 && g_date_compare (calitem->selecting_axis, &gdate_end) == 0) || (days_between == 0 && n_days < 0)) { if (days_between - n_days > calitem->max_days_selected - 1) n_days = days_between + 1 - calitem->max_days_selected; g_date_add_days (&gdate_start, n_days); } else { if (days_between + n_days > calitem->max_days_selected - 1) n_days = calitem->max_days_selected - 1 - days_between; g_date_add_days (&gdate_end, n_days); } if (g_date_compare (&gdate_end, &gdate_start) < 0) { GDate tmp_date; tmp_date = gdate_start; gdate_start = gdate_end; gdate_end = tmp_date; } } else { /* clear "selecting_axis", it is only for mulit-selecting */ if (calitem->selecting_axis) { g_free (calitem->selecting_axis); calitem->selecting_axis = NULL; } g_date_add_days (&gdate_start, n_days); gdate_end = gdate_start; } calitem->selecting = TRUE; e_calendar_item_set_selection_if_emission (calitem, &gdate_start, &gdate_end, FALSE); g_signal_emit_by_name (G_OBJECT (calitem), "selection_preview_changed"); } static gint e_calendar_item_key_press_event (ECalendarItem *calitem, GdkEvent *event) { guint keyval = event->key.keyval; gboolean multi_selection = FALSE; if (event->key.state & GDK_CONTROL_MASK || event->key.state & GDK_MOD1_MASK) return FALSE; multi_selection = event->key.state & GDK_SHIFT_MASK; switch (keyval) { case GDK_KEY_Up: e_calendar_item_selection_add_days (calitem, -7, multi_selection); break; case GDK_KEY_Down: e_calendar_item_selection_add_days (calitem, 7, multi_selection); break; case GDK_KEY_Left: e_calendar_item_selection_add_days (calitem, -1, multi_selection); break; case GDK_KEY_Right: e_calendar_item_selection_add_days (calitem, 1, multi_selection); break; case GDK_KEY_space: case GDK_KEY_Return: e_calendar_item_stop_selecting (calitem, event->key.time); break; default: return FALSE; } return TRUE; } static gint e_calendar_item_event (GnomeCanvasItem *item, GdkEvent *event) { ECalendarItem *calitem; calitem = E_CALENDAR_ITEM (item); switch (event->type) { case GDK_BUTTON_PRESS: return e_calendar_item_button_press (calitem, event); case GDK_BUTTON_RELEASE: return e_calendar_item_button_release (calitem, event); case GDK_MOTION_NOTIFY: return e_calendar_item_motion (calitem, event); case GDK_FOCUS_CHANGE: gnome_canvas_item_request_update (item); case GDK_KEY_PRESS: return e_calendar_item_key_press_event (calitem, event); default: break; } return FALSE; } static void e_calendar_item_bounds (GnomeCanvasItem *item, gdouble *x1, gdouble *y1, gdouble *x2, gdouble *y2) { ECalendarItem *calitem; g_return_if_fail (E_IS_CALENDAR_ITEM (item)); calitem = E_CALENDAR_ITEM (item); *x1 = calitem->x1; *y1 = calitem->y1; *x2 = calitem->x2; *y2 = calitem->y2; } /* This checks if any fonts have changed, and if so it recalculates the * text sizes and the minimum month size. */ static void e_calendar_item_recalc_sizes (ECalendarItem *calitem) { GnomeCanvasItem *canvas_item; GtkStyle *style; gint day, max_day_width, digit, max_digit_width, max_week_number_digit_width; gint char_height, width, min_cell_width, min_cell_height; PangoFontDescription *font_desc, *wkfont_desc; PangoContext *pango_context; PangoFontMetrics *font_metrics; PangoLayout *layout; canvas_item = GNOME_CANVAS_ITEM (calitem); style = gtk_widget_get_style (GTK_WIDGET (canvas_item->canvas)); if (!style) return; /* Set up Pango prerequisites */ font_desc = calitem->font_desc; wkfont_desc = calitem->week_number_font_desc; if (!font_desc) font_desc = style->font_desc; pango_context = gtk_widget_create_pango_context (GTK_WIDGET (canvas_item->canvas)); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); layout = pango_layout_new (pango_context); char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); max_day_width = 0; for (day = 0; day < 7; day++) { layout_set_day_text (calitem, layout, day); pango_layout_get_pixel_size (layout, &width, NULL); calitem->day_widths[day] = width; max_day_width = MAX (max_day_width, width); } calitem->max_day_width = max_day_width; max_digit_width = 0; max_week_number_digit_width = 0; for (digit = 0; digit < 10; digit++) { gchar locale_digit[5]; gint locale_digit_len; locale_digit_len = sprintf (locale_digit, get_digit_fomat (), digit); pango_layout_set_text (layout, locale_digit, locale_digit_len); pango_layout_get_pixel_size (layout, &width, NULL); calitem->digit_widths[digit] = width; max_digit_width = MAX (max_digit_width, width); if (wkfont_desc) { pango_context_set_font_description (pango_context, wkfont_desc); pango_layout_context_changed (layout); pango_layout_set_text (layout, locale_digit, locale_digit_len); pango_layout_get_pixel_size (layout, &width, NULL); calitem->week_number_digit_widths[digit] = width; max_week_number_digit_width = MAX (max_week_number_digit_width, width); pango_context_set_font_description (pango_context, font_desc); pango_layout_context_changed (layout); } else { calitem->week_number_digit_widths[digit] = width; max_week_number_digit_width = max_digit_width; } } calitem->max_digit_width = max_digit_width; calitem->max_week_number_digit_width = max_week_number_digit_width; min_cell_width = MAX (calitem->max_day_width, (calitem->max_digit_width * 2)) + E_CALENDAR_ITEM_MIN_CELL_XPAD; min_cell_height = char_height + E_CALENDAR_ITEM_MIN_CELL_YPAD; calitem->min_month_width = E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS + E_CALENDAR_ITEM_XPAD_BEFORE_CELLS + min_cell_width * 7 + E_CALENDAR_ITEM_XPAD_AFTER_CELLS; if (calitem->show_week_numbers) { calitem->min_month_width += calitem->max_week_number_digit_width * 2 + E_CALENDAR_ITEM_XPAD_AFTER_WEEK_NUMBERS + 1; } calitem->min_month_height = style->ythickness * 2 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME + 1 + E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS + char_height + E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS + 1 + E_CALENDAR_ITEM_YPAD_ABOVE_CELLS + min_cell_height * 6 + E_CALENDAR_ITEM_YPAD_BELOW_CELLS; g_object_unref (layout); g_object_unref (pango_context); pango_font_metrics_unref (font_metrics); } static void e_calendar_item_get_day_style (ECalendarItem *calitem, gint year, gint month, gint day, gint day_style, gboolean today, gboolean prev_or_next_month, gboolean selected, gboolean has_focus, gboolean drop_target, GdkColor **bg_color, GdkColor **fg_color, GdkColor **box_color, gboolean *bold, gboolean *italic) { GtkWidget *widget; GtkStyle *style; widget = GTK_WIDGET (GNOME_CANVAS_ITEM (calitem)->canvas); style = gtk_widget_get_style (widget); *bg_color = NULL; *fg_color = NULL; *box_color = NULL; *bold = (day_style & E_CALENDAR_ITEM_MARK_BOLD) == E_CALENDAR_ITEM_MARK_BOLD; *italic = (day_style & E_CALENDAR_ITEM_MARK_ITALIC) == E_CALENDAR_ITEM_MARK_ITALIC; if (today) *box_color = &calitem->colors[E_CALENDAR_ITEM_COLOR_TODAY_BOX]; if (prev_or_next_month) *fg_color = &style->mid[gtk_widget_get_state (widget)]; if (selected) { if (has_focus) { *fg_color = &style->text[GTK_STATE_SELECTED]; *bg_color = &style->base[GTK_STATE_SELECTED]; } else { *fg_color = &style->text[GTK_STATE_ACTIVE]; *bg_color = &style->base[GTK_STATE_ACTIVE]; } } } static gboolean e_calendar_item_button_press (ECalendarItem *calitem, GdkEvent *event) { gint month_offset, day, add_days = 0; gboolean all_week, round_up_end = FALSE, round_down_start = FALSE; if (event->button.button == 4) e_calendar_item_set_first_month (calitem, calitem->year, calitem->month - 1); else if (event->button.button == 5) e_calendar_item_set_first_month (calitem, calitem->year, calitem->month + 1); if (!e_calendar_item_convert_position_to_day (calitem, event->button.x, event->button.y, TRUE, &month_offset, &day, &all_week)) return FALSE; if (event->button.button == 3 && day == -1 && e_calendar_item_get_display_popup (calitem)) { e_calendar_item_show_popup_menu (calitem, (GdkEventButton *) event, month_offset); return TRUE; } if (event->button.button != 1 || day == -1) return FALSE; if (calitem->max_days_selected < 1) return TRUE; if (gnome_canvas_item_grab (GNOME_CANVAS_ITEM (calitem), GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, NULL, event->button.time) != 0) return FALSE; if (all_week && calitem->keep_wdays_on_weeknum_click) { gint tmp_start_moff, tmp_start_day; tmp_start_moff = calitem->selection_start_month_offset; tmp_start_day = calitem->selection_start_day; e_calendar_item_round_down_selection ( calitem, &tmp_start_moff, &tmp_start_day); e_calendar_item_round_down_selection (calitem, &month_offset, &day); month_offset += calitem->selection_start_month_offset - tmp_start_moff; day += calitem->selection_start_day - tmp_start_day; /* keep same count of days selected */ add_days = e_calendar_item_get_inclusive_days ( calitem, calitem->selection_start_month_offset, calitem->selection_start_day, calitem->selection_end_month_offset, calitem->selection_end_day) - 1; } calitem->selection_set = TRUE; calitem->selection_start_month_offset = month_offset; calitem->selection_start_day = day; calitem->selection_end_month_offset = month_offset; calitem->selection_end_day = day; if (add_days > 0) e_calendar_item_add_days_to_selection (calitem, add_days); calitem->selection_real_start_month_offset = month_offset; calitem->selection_real_start_day = day; calitem->selection_from_full_week = FALSE; calitem->selecting = TRUE; calitem->selection_dragging_end = TRUE; if (all_week && !calitem->keep_wdays_on_weeknum_click) { calitem->selection_from_full_week = TRUE; round_up_end = TRUE; } if (calitem->days_to_start_week_selection == 1) { round_down_start = TRUE; round_up_end = TRUE; } /* Don't round up or down if we can't select a week or more, * or when keeping week days. */ if (calitem->max_days_selected < 7 || (all_week && calitem->keep_wdays_on_weeknum_click)) { round_down_start = FALSE; round_up_end = FALSE; } if (round_up_end) e_calendar_item_round_up_selection ( calitem, &calitem->selection_end_month_offset, &calitem->selection_end_day); if (round_down_start) e_calendar_item_round_down_selection ( calitem, &calitem->selection_start_month_offset, &calitem->selection_start_day); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); return TRUE; } static gboolean e_calendar_item_button_release (ECalendarItem *calitem, GdkEvent *event) { e_calendar_item_stop_selecting (calitem, event->button.time); return FALSE; } static gboolean e_calendar_item_motion (ECalendarItem *calitem, GdkEvent *event) { gint start_month, start_day, end_month, end_day, month_offset, day; gint tmp_month, tmp_day, days_in_selection; gboolean all_week, round_up_end = FALSE, round_down_start = FALSE; if (!calitem->selecting) return FALSE; if (!e_calendar_item_convert_position_to_day (calitem, event->button.x, event->button.y, TRUE, &month_offset, &day, &all_week)) return FALSE; if (day == -1) return FALSE; if (calitem->selection_dragging_end) { start_month = calitem->selection_real_start_month_offset; start_day = calitem->selection_real_start_day; end_month = month_offset; end_day = day; } else { start_month = month_offset; start_day = day; end_month = calitem->selection_real_start_month_offset; end_day = calitem->selection_real_start_day; } if (start_month > end_month || (start_month == end_month && start_day > end_day)) { tmp_month = start_month; tmp_day = start_day; start_month = end_month; start_day = end_day; end_month = tmp_month; end_day = tmp_day; calitem->selection_dragging_end = !calitem->selection_dragging_end; } if (calitem->days_to_start_week_selection > 0) { days_in_selection = e_calendar_item_get_inclusive_days ( calitem, start_month, start_day, end_month, end_day); if (days_in_selection >= calitem->days_to_start_week_selection) { round_down_start = TRUE; round_up_end = TRUE; } } /* If we are over a week number and we are dragging the end of the * selection, we round up to the end of this week. */ if (all_week && calitem->selection_dragging_end) round_up_end = TRUE; /* If the selection was started from a week number and we are dragging * the start of the selection, we need to round up the end to include * all of the original week selected. */ if (calitem->selection_from_full_week && !calitem->selection_dragging_end) round_up_end = TRUE; /* Don't round up or down if we can't select a week or more. */ if (calitem->max_days_selected < 7) { round_down_start = FALSE; round_up_end = FALSE; } if (round_up_end) e_calendar_item_round_up_selection (calitem, &end_month, &end_day); if (round_down_start) e_calendar_item_round_down_selection (calitem, &start_month, &start_day); /* Check we don't go over the maximum number of days to select. */ if (calitem->selection_dragging_end) { e_calendar_item_check_selection_end (calitem, start_month, start_day, &end_month, &end_day); } else { e_calendar_item_check_selection_start (calitem, &start_month, &start_day, end_month, end_day); } if (start_month == calitem->selection_start_month_offset && start_day == calitem->selection_start_day && end_month == calitem->selection_end_month_offset && end_day == calitem->selection_end_day) return FALSE; calitem->selection_start_month_offset = start_month; calitem->selection_start_day = start_day; calitem->selection_end_month_offset = end_month; calitem->selection_end_day = end_day; gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); return TRUE; } static void e_calendar_item_check_selection_end (ECalendarItem *calitem, gint start_month, gint start_day, gint *end_month, gint *end_day) { gint year, month, max_month, max_day, days_in_month; if (calitem->max_days_selected <= 0) return; year = calitem->year; month = calitem->month + start_month; e_calendar_item_normalize_date (calitem, &year, &month); max_month = start_month; max_day = start_day + calitem->max_days_selected - 1; for (;;) { days_in_month = DAYS_IN_MONTH (year, month); if (max_day <= days_in_month) break; max_month++; month++; if (month == 12) { year++; month = 0; } max_day -= days_in_month; } if (*end_month > max_month) { *end_month = max_month; *end_day = max_day; } else if (*end_month == max_month && *end_day > max_day) { *end_day = max_day; } } static void e_calendar_item_check_selection_start (ECalendarItem *calitem, gint *start_month, gint *start_day, gint end_month, gint end_day) { gint year, month, min_month, min_day, days_in_month; if (calitem->max_days_selected <= 0) return; year = calitem->year; month = calitem->month + end_month; e_calendar_item_normalize_date (calitem, &year, &month); min_month = end_month; min_day = end_day - calitem->max_days_selected + 1; while (min_day <= 0) { min_month--; month--; if (month == -1) { year--; month = 11; } days_in_month = DAYS_IN_MONTH (year, month); min_day += days_in_month; } if (*start_month < min_month) { *start_month = min_month; *start_day = min_day; } else if (*start_month == min_month && *start_day < min_day) { *start_day = min_day; } } /* Converts a position within the item to a month & day. * The month returned is 0 for the top-left month displayed. * If the position is over the month heading -1 is returned for the day. * If the position is over a week number the first day of the week is returned * and entire_week is set to TRUE. * It returns FALSE if the position is completely outside all months. */ static gboolean e_calendar_item_convert_position_to_day (ECalendarItem *calitem, gint event_x, gint event_y, gboolean round_empty_positions, gint *month_offset, gint *day, gboolean *entire_week) { GnomeCanvasItem *item; GtkWidget *widget; GtkStyle *style; gint xthickness, ythickness, char_height; gint x, y, row, col, cells_x, cells_y, day_row, day_col; gint first_day_offset, days_in_month, days_in_prev_month; gint week_num_x1, week_num_x2; PangoFontDescription *font_desc; PangoContext *pango_context; PangoFontMetrics *font_metrics; item = GNOME_CANVAS_ITEM (calitem); widget = GTK_WIDGET (item->canvas); style = gtk_widget_get_style (widget); font_desc = calitem->font_desc; if (!font_desc) font_desc = style->font_desc; pango_context = gtk_widget_create_pango_context (widget); font_metrics = pango_context_get_metrics (pango_context, font_desc, pango_context_get_language (pango_context)); char_height = PANGO_PIXELS (pango_font_metrics_get_ascent (font_metrics)) + PANGO_PIXELS (pango_font_metrics_get_descent (font_metrics)); xthickness = style->xthickness; ythickness = style->ythickness; pango_font_metrics_unref (font_metrics); *entire_week = FALSE; x = event_x - xthickness - calitem->x_offset; y = event_y - ythickness; if (x < 0 || y < 0) return FALSE; row = y / calitem->month_height; col = x / calitem->month_width; if (row >= calitem->rows || col >= calitem->cols) return FALSE; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) col = calitem->cols - 1 - col; *month_offset = row * calitem->cols + col; x = x % calitem->month_width; y = y % calitem->month_height; if (y < ythickness * 2 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME) { *day = -1; return TRUE; } cells_y = ythickness * 2 + E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME + char_height + E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME + E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS + calitem->month_tpad + char_height + E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS + 1 + E_CALENDAR_ITEM_YPAD_ABOVE_CELLS; y -= cells_y; if (y < 0) return FALSE; day_row = y / calitem->cell_height; if (day_row >= E_CALENDAR_ROWS_PER_MONTH) return FALSE; week_num_x1 = E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS + calitem->month_lpad; if (calitem->show_week_numbers) { week_num_x2 = week_num_x1 + calitem->max_week_number_digit_width * 2; if (x >= week_num_x1 && x < week_num_x2) *entire_week = TRUE; cells_x = week_num_x2 + E_CALENDAR_ITEM_XPAD_AFTER_WEEK_NUMBERS + 1; } else { cells_x = week_num_x1; } if (*entire_week) { day_col = 0; } else { cells_x += E_CALENDAR_ITEM_XPAD_BEFORE_CELLS; x -= cells_x; if (x < 0) return FALSE; day_col = x / calitem->cell_width; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) day_col = E_CALENDAR_COLS_PER_MONTH - 1 - day_col; if (day_col >= E_CALENDAR_COLS_PER_MONTH) return FALSE; } *day = day_row * E_CALENDAR_COLS_PER_MONTH + day_col; e_calendar_item_get_month_info (calitem, row, col, &first_day_offset, &days_in_month, &days_in_prev_month); if (*day < first_day_offset) { if (*entire_week || (row == 0 && col == 0)) { (*month_offset)--; *day = days_in_prev_month + 1 - first_day_offset + *day; return TRUE; } else if (round_empty_positions) { *day = first_day_offset; } else { return FALSE; } } *day -= first_day_offset - 1; if (*day > days_in_month) { if (row == calitem->rows - 1 && col == calitem->cols - 1) { (*month_offset)++; *day -= days_in_month; return TRUE; } else if (round_empty_positions) { *day = days_in_month; } else { return FALSE; } } return TRUE; } static void e_calendar_item_get_month_info (ECalendarItem *calitem, gint row, gint col, gint *first_day_offset, gint *days_in_month, gint *days_in_prev_month) { gint year, month, start_weekday, first_day_of_month; struct tm tmp_tm = { 0 }; month = calitem->month + row * calitem->cols + col; year = calitem->year + month / 12; month = month % 12; *days_in_month = DAYS_IN_MONTH (year, month); if (month == 0) *days_in_prev_month = DAYS_IN_MONTH (year - 1, 11); else *days_in_prev_month = DAYS_IN_MONTH (year, month - 1); tmp_tm.tm_year = year - 1900; tmp_tm.tm_mon = month; tmp_tm.tm_mday = 1; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); /* Convert to 0 (Monday) to 6 (Sunday). */ start_weekday = (tmp_tm.tm_wday + 6) % 7; first_day_of_month = (start_weekday + 7 - calitem->week_start_day) % 7; if (row == 0 && col == 0 && first_day_of_month == 0) *first_day_offset = 7; else *first_day_offset = first_day_of_month; } void e_calendar_item_get_first_month (ECalendarItem *calitem, gint *year, gint *month) { *year = calitem->year; *month = calitem->month; } static void e_calendar_item_preserve_day_selection (ECalendarItem *calitem, gint selected_day, gint *month_offset, gint *day) { gint year, month, weekday, days, days_in_month; struct tm tmp_tm = { 0 }; year = calitem->year; month = calitem->month + *month_offset; e_calendar_item_normalize_date (calitem, &year, &month); tmp_tm.tm_year = year - 1900; tmp_tm.tm_mon = month; tmp_tm.tm_mday = *day; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); /* Convert to 0 (Monday) to 6 (Sunday). */ weekday = (tmp_tm.tm_wday + 6) % 7; /* Calculate how many days to the start of the row. */ days = (weekday + 7 - selected_day) % 7; *day -= days; if (*day <= 0) { month--; if (month == -1) { year--; month = 11; } days_in_month = DAYS_IN_MONTH (year, month); (*month_offset)--; *day += days_in_month; } } /* This also handles values of month < 0 or > 11 by updating the year. */ void e_calendar_item_set_first_month (ECalendarItem *calitem, gint year, gint month) { gint new_year, new_month, months_diff, num_months; gint old_days_in_selection, new_days_in_selection; new_year = year; new_month = month; e_calendar_item_normalize_date (calitem, &new_year, &new_month); if (calitem->year == new_year && calitem->month == new_month) return; /* Update the selection. */ num_months = calitem->rows * calitem->cols; months_diff = (new_year - calitem->year) * 12 + new_month - calitem->month; if (calitem->selection_set) { if (!calitem->move_selection_when_moving || (calitem->selection_start_month_offset - months_diff >= 0 && calitem->selection_end_month_offset - months_diff < num_months)) { calitem->selection_start_month_offset -= months_diff; calitem->selection_end_month_offset -= months_diff; calitem->selection_real_start_month_offset -= months_diff; calitem->year = new_year; calitem->month = new_month; } else { gint selected_day; struct tm tmp_tm = { 0 }; old_days_in_selection = e_calendar_item_get_inclusive_days ( calitem, calitem->selection_start_month_offset, calitem->selection_start_day, calitem->selection_end_month_offset, calitem->selection_end_day); /* Calculate the currently selected day */ tmp_tm.tm_year = calitem->year - 1900; tmp_tm.tm_mon = calitem->month + calitem->selection_start_month_offset; tmp_tm.tm_mday = calitem->selection_start_day; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); selected_day = (tmp_tm.tm_wday + 6) % 7; /* Make sure the selection will be displayed. */ if (calitem->selection_start_month_offset < 0 || calitem->selection_start_month_offset >= num_months) { calitem->selection_end_month_offset -= calitem->selection_start_month_offset; calitem->selection_start_month_offset = 0; } /* We want to ensure that the same number of days are * selected after we have moved the selection. */ calitem->year = new_year; calitem->month = new_month; e_calendar_item_ensure_valid_day ( calitem, &calitem->selection_start_month_offset, &calitem->selection_start_day); e_calendar_item_ensure_valid_day ( calitem, &calitem->selection_end_month_offset, &calitem->selection_end_day); if (calitem->preserve_day_when_moving) { e_calendar_item_preserve_day_selection ( calitem, selected_day, &calitem->selection_start_month_offset, &calitem->selection_start_day); } new_days_in_selection = e_calendar_item_get_inclusive_days ( calitem, calitem->selection_start_month_offset, calitem->selection_start_day, calitem->selection_end_month_offset, calitem->selection_end_day); if (old_days_in_selection != new_days_in_selection) e_calendar_item_add_days_to_selection ( calitem, old_days_in_selection - new_days_in_selection); /* Flag that we need to emit the "selection_changed" * signal. We don't want to emit it here since setting * the "year" and "month" args would result in 2 * signals emitted. */ calitem->selection_changed = TRUE; } } else { calitem->year = new_year; calitem->month = new_month; } e_calendar_item_date_range_changed (calitem); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } /* Get the maximum number of days selectable */ gint e_calendar_item_get_max_days_sel (ECalendarItem *calitem) { return calitem->max_days_selected; } /* Set the maximum number of days selectable */ void e_calendar_item_set_max_days_sel (ECalendarItem *calitem, gint days) { calitem->max_days_selected = MAX (0, days); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } /* Get the maximum number of days before whole weeks are selected */ gint e_calendar_item_get_days_start_week_sel (ECalendarItem *calitem) { return calitem->days_to_start_week_selection; } /* Set the maximum number of days before whole weeks are selected */ void e_calendar_item_set_days_start_week_sel (ECalendarItem *calitem, gint days) { calitem->days_to_start_week_selection = days; } gboolean e_calendar_item_get_display_popup (ECalendarItem *calitem) { return calitem->display_popup; } void e_calendar_item_set_display_popup (ECalendarItem *calitem, gboolean display) { calitem->display_popup = display; } /* This will make sure that the given year & month are valid, i.e. if month * is < 0 or > 11 the year and month will be updated accordingly. */ void e_calendar_item_normalize_date (ECalendarItem *calitem, gint *year, gint *month) { if (*month >= 0) { *year += *month / 12; *month = *month % 12; } else { *year += *month / 12 - 1; *month = *month % 12; if (*month != 0) *month += 12; } } /* Adds or subtracts days from the selection. It is used when we switch months * and the selection extends past the end of a month but we want to keep the * number of days selected the same. days should not be more than 30. */ static void e_calendar_item_add_days_to_selection (ECalendarItem *calitem, gint days) { gint year, month, days_in_month; year = calitem->year; month = calitem->month + calitem->selection_end_month_offset; e_calendar_item_normalize_date (calitem, &year, &month); calitem->selection_end_day += days; if (calitem->selection_end_day <= 0) { month--; e_calendar_item_normalize_date (calitem, &year, &month); calitem->selection_end_month_offset--; calitem->selection_end_day += DAYS_IN_MONTH (year, month); } else { days_in_month = DAYS_IN_MONTH (year, month); if (calitem->selection_end_day > days_in_month) { calitem->selection_end_month_offset++; calitem->selection_end_day -= days_in_month; } } } /* Gets the range of dates actually shown. Months are 0 to 11. * This also includes the last days of the previous month and the first days * of the following month, which are normally shown in gray. * It returns FALSE if no dates are currently shown. */ gboolean e_calendar_item_get_date_range (ECalendarItem *calitem, gint *start_year, gint *start_month, gint *start_day, gint *end_year, gint *end_month, gint *end_day) { gint first_day_offset, days_in_month, days_in_prev_month; if (calitem->rows == 0 || calitem->cols == 0) return FALSE; /* Calculate the first day shown. This will be one of the greyed-out * days before the first full month begins. */ e_calendar_item_get_month_info (calitem, 0, 0, &first_day_offset, &days_in_month, &days_in_prev_month); *start_year = calitem->year; *start_month = calitem->month - 1; if (*start_month == -1) { (*start_year)--; *start_month = 11; } *start_day = days_in_prev_month + 1 - first_day_offset; /* Calculate the last day shown. This will be one of the greyed-out * days after the last full month ends. */ e_calendar_item_get_month_info (calitem, calitem->rows - 1, calitem->cols - 1, &first_day_offset, &days_in_month, &days_in_prev_month); *end_month = calitem->month + calitem->rows * calitem->cols; *end_year = calitem->year + *end_month / 12; *end_month %= 12; *end_day = E_CALENDAR_ROWS_PER_MONTH * E_CALENDAR_COLS_PER_MONTH - first_day_offset - days_in_month; return TRUE; } /* Simple way to mark days so they appear bold. * A more flexible interface may be added later. */ void e_calendar_item_clear_marks (ECalendarItem *calitem) { GnomeCanvasItem *item; item = GNOME_CANVAS_ITEM (calitem); g_free (calitem->styles); calitem->styles = NULL; gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2); } /* add_day_style - whether bit-or with the actual style or change the style fully */ void e_calendar_item_mark_day (ECalendarItem *calitem, gint year, gint month, gint day, guint8 day_style, gboolean add_day_style) { gint month_offset; gint index; month_offset = (year - calitem->year) * 12 + month - calitem->month; if (month_offset < -1 || month_offset > calitem->rows * calitem->cols) return; if (!calitem->styles) calitem->styles = g_new0 (guint8, (calitem->rows * calitem->cols + 2) * 32); index = (month_offset + 1) * 32 + day; calitem->styles[index] = day_style | (add_day_style ? calitem->styles[index] : 0); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } void e_calendar_item_mark_days (ECalendarItem *calitem, gint start_year, gint start_month, gint start_day, gint end_year, gint end_month, gint end_day, guint8 day_style, gboolean add_day_style) { gint month_offset, end_month_offset, day; month_offset = (start_year - calitem->year) * 12 + start_month - calitem->month; day = start_day; if (month_offset > calitem->rows * calitem->cols) return; if (month_offset < -1) { month_offset = -1; day = 1; } end_month_offset = (end_year - calitem->year) * 12 + end_month - calitem->month; if (end_month_offset < -1) return; if (end_month_offset > calitem->rows * calitem->cols) { end_month_offset = calitem->rows * calitem->cols; end_day = 31; } if (month_offset > end_month_offset) return; if (!calitem->styles) calitem->styles = g_new0 (guint8, (calitem->rows * calitem->cols + 2) * 32); for (;;) { gint index; if (month_offset == end_month_offset && day > end_day) break; if (month_offset < -1 || month_offset > calitem->rows * calitem->cols) g_warning ("Bad month offset: %i\n", month_offset); if (day < 1 || day > 31) g_warning ("Bad day: %i\n", day); #if 0 g_print ("Marking Month:%i Day:%i\n", month_offset, day); #endif index = (month_offset + 1) * 32 + day; calitem->styles[index] = day_style | (add_day_style ? calitem->styles[index] : 0); day++; if (day == 32) { month_offset++; day = 1; if (month_offset > end_month_offset) break; } } gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } /* Rounds up the given day to the end of the week. */ static void e_calendar_item_round_up_selection (ECalendarItem *calitem, gint *month_offset, gint *day) { gint year, month, weekday, days, days_in_month; struct tm tmp_tm = { 0 }; year = calitem->year; month = calitem->month + *month_offset; e_calendar_item_normalize_date (calitem, &year, &month); tmp_tm.tm_year = year - 1900; tmp_tm.tm_mon = month; tmp_tm.tm_mday = *day; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); /* Convert to 0 (Monday) to 6 (Sunday). */ weekday = (tmp_tm.tm_wday + 6) % 7; /* Calculate how many days to the end of the row. */ days = (calitem->week_start_day + 6 - weekday) % 7; *day += days; days_in_month = DAYS_IN_MONTH (year, month); if (*day > days_in_month) { (*month_offset)++; *day -= days_in_month; } } /* Rounds down the given day to the start of the week. */ static void e_calendar_item_round_down_selection (ECalendarItem *calitem, gint *month_offset, gint *day) { gint year, month, weekday, days, days_in_month; struct tm tmp_tm = { 0 }; year = calitem->year; month = calitem->month + *month_offset; e_calendar_item_normalize_date (calitem, &year, &month); tmp_tm.tm_year = year - 1900; tmp_tm.tm_mon = month; tmp_tm.tm_mday = *day; tmp_tm.tm_isdst = -1; mktime (&tmp_tm); /* Convert to 0 (Monday) to 6 (Sunday). */ weekday = (tmp_tm.tm_wday + 6) % 7; /* Calculate how many days to the start of the row. */ days = (weekday + 7 - calitem->week_start_day) % 7; *day -= days; if (*day <= 0) { month--; if (month == -1) { year--; month = 11; } days_in_month = DAYS_IN_MONTH (year, month); (*month_offset)--; *day += days_in_month; } } static gint e_calendar_item_get_inclusive_days (ECalendarItem *calitem, gint start_month_offset, gint start_day, gint end_month_offset, gint end_day) { gint start_year, start_month, end_year, end_month, days = 0; start_year = calitem->year; start_month = calitem->month + start_month_offset; e_calendar_item_normalize_date (calitem, &start_year, &start_month); end_year = calitem->year; end_month = calitem->month + end_month_offset; e_calendar_item_normalize_date (calitem, &end_year, &end_month); while (start_year < end_year || start_month < end_month) { days += DAYS_IN_MONTH (start_year, start_month); start_month++; if (start_month == 12) { start_year++; start_month = 0; } } days += end_day - start_day + 1; return days; } /* If the day is off the end of the month it is set to the last day of the * month. */ static void e_calendar_item_ensure_valid_day (ECalendarItem *calitem, gint *month_offset, gint *day) { gint year, month, days_in_month; year = calitem->year; month = calitem->month + *month_offset; e_calendar_item_normalize_date (calitem, &year, &month); days_in_month = DAYS_IN_MONTH (year, month); if (*day > days_in_month) *day = days_in_month; } gboolean e_calendar_item_get_selection (ECalendarItem *calitem, GDate *start_date, GDate *end_date) { gint start_year, start_month, start_day; gint end_year, end_month, end_day; g_date_clear (start_date, 1); g_date_clear (end_date, 1); if (!calitem->selection_set) return FALSE; start_year = calitem->year; start_month = calitem->month + calitem->selection_start_month_offset; e_calendar_item_normalize_date (calitem, &start_year, &start_month); start_day = calitem->selection_start_day; end_year = calitem->year; end_month = calitem->month + calitem->selection_end_month_offset; e_calendar_item_normalize_date (calitem, &end_year, &end_month); end_day = calitem->selection_end_day; g_date_set_dmy (start_date, start_day, start_month + 1, start_year); g_date_set_dmy (end_date, end_day, end_month + 1, end_year); return TRUE; } static void e_calendar_item_set_selection_if_emission (ECalendarItem *calitem, const GDate *start_date, const GDate *end_date, gboolean emission) { gint start_year, start_month, start_day; gint end_year, end_month, end_day; gint new_start_month_offset, new_start_day; gint new_end_month_offset, new_end_day; gboolean need_update; g_return_if_fail (E_IS_CALENDAR_ITEM (calitem)); /* If start_date is NULL, we clear the selection without changing the * month shown. */ if (start_date == NULL) { calitem->selection_set = FALSE; calitem->selection_changed = TRUE; e_calendar_item_queue_signal_emission (calitem); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); return; } if (end_date == NULL) end_date = start_date; g_return_if_fail (g_date_compare (start_date, end_date) <= 0); start_year = g_date_get_year (start_date); start_month = g_date_get_month (start_date) - 1; start_day = g_date_get_day (start_date); end_year = g_date_get_year (end_date); end_month = g_date_get_month (end_date) - 1; end_day = g_date_get_day (end_date); need_update = e_calendar_item_ensure_days_visible (calitem, start_year, start_month, start_day, end_year, end_month, end_day, emission); new_start_month_offset = (start_year - calitem->year) * 12 + start_month - calitem->month; new_start_day = start_day; /* This may go outside the visible months, but we don't care. */ new_end_month_offset = (end_year - calitem->year) * 12 + end_month - calitem->month; new_end_day = end_day; if (!calitem->selection_set || calitem->selection_start_month_offset != new_start_month_offset || calitem->selection_start_day != new_start_day || calitem->selection_end_month_offset != new_end_month_offset || calitem->selection_end_day != new_end_day) { need_update = TRUE; if (emission) { calitem->selection_changed = TRUE; e_calendar_item_queue_signal_emission (calitem); } calitem->selection_set = TRUE; calitem->selection_start_month_offset = new_start_month_offset; calitem->selection_start_day = new_start_day; calitem->selection_end_month_offset = new_end_month_offset; calitem->selection_end_day = new_end_day; calitem->selection_real_start_month_offset = new_start_month_offset; calitem->selection_real_start_day = new_start_day; calitem->selection_from_full_week = FALSE; } if (need_update) gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (calitem)); } void e_calendar_item_style_set (GtkWidget *widget, ECalendarItem *calitem) { GtkStyle *style; GdkColor *color; style = gtk_widget_get_style (widget); color = &style->bg[GTK_STATE_SELECTED]; calitem->colors[E_CALENDAR_ITEM_COLOR_TODAY_BOX] = *color; color = &style->base[GTK_STATE_NORMAL]; calitem->colors[E_CALENDAR_ITEM_COLOR_SELECTION_FG] = *color; color = &style->bg[GTK_STATE_SELECTED]; calitem->colors[E_CALENDAR_ITEM_COLOR_SELECTION_BG_FOCUSED] = *color; color = &style->fg[GTK_STATE_INSENSITIVE]; calitem->colors[E_CALENDAR_ITEM_COLOR_SELECTION_BG] = *color; color = &style->fg[GTK_STATE_INSENSITIVE]; calitem->colors[E_CALENDAR_ITEM_COLOR_PREV_OR_NEXT_MONTH_FG] = *color; } void e_calendar_item_set_selection (ECalendarItem *calitem, const GDate *start_date, const GDate *end_date) { /* If the user is in the middle of a selection, we must abort it. */ if (calitem->selecting) { gnome_canvas_item_ungrab (GNOME_CANVAS_ITEM (calitem), GDK_CURRENT_TIME); calitem->selecting = FALSE; } e_calendar_item_set_selection_if_emission (calitem, start_date, end_date, TRUE); } /* This tries to ensure that the given time range is visible. If the range * given is longer than we can show, only the start of it will be visible. * Note that this will not update the selection. That should be done somewhere * else. It returns TRUE if the visible range has been changed. */ static gboolean e_calendar_item_ensure_days_visible (ECalendarItem *calitem, gint start_year, gint start_month, gint start_day, gint end_year, gint end_month, gint end_day, gboolean emission) { gint current_end_year, current_end_month; gint months_shown; gint first_day_offset, days_in_month, days_in_prev_month; gboolean need_update = FALSE; months_shown = calitem->rows * calitem->cols; /* Calculate the range of months currently displayed. */ current_end_year = calitem->year; current_end_month = calitem->month + months_shown - 1; e_calendar_item_normalize_date (calitem, ¤t_end_year, ¤t_end_month); /* Try to ensure that the end month is shown. */ if ((end_year == current_end_year + 1 && current_end_month == 11 && end_month == 0) || (end_year == current_end_year && end_month == current_end_month + 1)) { /* See if the end of the selection will fit in the * leftover days of the month after the last one shown. */ calitem->month += (months_shown - 1); e_calendar_item_normalize_date (calitem, &calitem->year, &calitem->month); e_calendar_item_get_month_info (calitem, 0, 0, &first_day_offset, &days_in_month, &days_in_prev_month); if (end_day >= E_CALENDAR_ROWS_PER_MONTH * E_CALENDAR_COLS_PER_MONTH - first_day_offset - days_in_month) { need_update = TRUE; calitem->year = end_year; calitem->month = end_month - months_shown + 1; } else { calitem->month -= (months_shown - 1); } e_calendar_item_normalize_date (calitem, &calitem->year, &calitem->month); } else if (end_year > current_end_year || (end_year == current_end_year && end_month > current_end_month)) { /* The selection will definitely not fit in the leftover days * of the month after the last one shown. */ need_update = TRUE; calitem->year = end_year; calitem->month = end_month - months_shown + 1; e_calendar_item_normalize_date (calitem, &calitem->year, &calitem->month); } /* Now try to ensure that the start month is shown. We do this after * the end month so that the start month will always be shown. */ if (start_year < calitem->year || (start_year == calitem->year && start_month < calitem->month)) { need_update = TRUE; /* First we see if the start of the selection will fit in the * leftover days of the month before the first one shown. */ calitem->year = start_year; calitem->month = start_month + 1; e_calendar_item_normalize_date (calitem, &calitem->year, &calitem->month); e_calendar_item_get_month_info (calitem, 0, 0, &first_day_offset, &days_in_month, &days_in_prev_month); if (start_day <= days_in_prev_month - first_day_offset) { calitem->year = start_year; calitem->month = start_month; } } if (need_update && emission) e_calendar_item_date_range_changed (calitem); return need_update; } static gboolean destroy_menu_idle_cb (gpointer menu) { gtk_widget_destroy (menu); return FALSE; } static void deactivate_menu_cb (GtkWidget *menu) { g_signal_handlers_disconnect_by_func (menu, deactivate_menu_cb, NULL); g_idle_add (destroy_menu_idle_cb, menu); } static void e_calendar_item_show_popup_menu (ECalendarItem *calitem, GdkEventButton *event, gint month_offset) { GtkWidget *menu, *submenu, *menuitem, *label; gint year, month; const gchar *name; gchar buffer[64]; menu = gtk_menu_new (); for (year = calitem->year - 2; year <= calitem->year + 2; year++) { g_snprintf (buffer, 64, "%i", year); menuitem = gtk_menu_item_new_with_label (buffer); gtk_widget_show (menuitem); gtk_container_add (GTK_CONTAINER (menu), menuitem); submenu = gtk_menu_new (); gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu); g_object_set_data(G_OBJECT(submenu), "year", GINT_TO_POINTER (year)); g_object_set_data(G_OBJECT(submenu), "month_offset", GINT_TO_POINTER (month_offset)); for (month = 0; month < 12; month++) { name = e_get_month_name (month + 1, FALSE); menuitem = gtk_menu_item_new (); gtk_widget_show (menuitem); gtk_container_add (GTK_CONTAINER (submenu), menuitem); label = gtk_label_new (name); gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5); gtk_widget_show (label); gtk_container_add (GTK_CONTAINER (menuitem), label); g_object_set_data(G_OBJECT(menuitem), "month", GINT_TO_POINTER (month)); g_signal_connect ((menuitem), "activate", G_CALLBACK (e_calendar_item_on_menu_item_activate), calitem); } } g_signal_connect (menu, "deactivate", G_CALLBACK (deactivate_menu_cb), NULL); gtk_menu_popup (GTK_MENU (menu), NULL, NULL, e_calendar_item_position_menu, calitem, event->button, event->time); } static void e_calendar_item_on_menu_item_activate (GtkWidget *menuitem, ECalendarItem *calitem) { GtkWidget *parent; gint year, month_offset, month; gpointer data; parent = gtk_widget_get_parent (menuitem); data = g_object_get_data (G_OBJECT (parent), "year"); year = GPOINTER_TO_INT (data); parent = gtk_widget_get_parent (menuitem); data = g_object_get_data (G_OBJECT (parent), "month_offset"); month_offset = GPOINTER_TO_INT (data); data = g_object_get_data (G_OBJECT (menuitem), "month"); month = GPOINTER_TO_INT (data); month -= month_offset; e_calendar_item_normalize_date (calitem, &year, &month); e_calendar_item_set_first_month (calitem, year, month); } static void e_calendar_item_position_menu (GtkMenu *menu, gint *x, gint *y, gboolean *push_in, gpointer user_data) { GtkRequisition requisition; gint screen_width, screen_height; gtk_widget_get_child_requisition (GTK_WIDGET (menu), &requisition); *x -= (gtk_widget_get_direction(GTK_WIDGET(menu)) == GTK_TEXT_DIR_RTL) ? requisition.width - 2 : 2; *y -= requisition.height / 2; screen_width = gdk_screen_width (); screen_height = gdk_screen_height (); *x = CLAMP (*x, 0, screen_width - requisition.width); *y = CLAMP (*y, 0, screen_height - requisition.height); } /* Sets the function to call to get the colors to use for a particular day. */ void e_calendar_item_set_style_callback (ECalendarItem *calitem, ECalendarItemStyleCallback cb, gpointer data, GDestroyNotify destroy) { g_return_if_fail (E_IS_CALENDAR_ITEM (calitem)); if (calitem->style_callback_data && calitem->style_callback_destroy) (*calitem->style_callback_destroy) (calitem->style_callback_data); calitem->style_callback = cb; calitem->style_callback_data = data; calitem->style_callback_destroy = destroy; } static void e_calendar_item_date_range_changed (ECalendarItem *calitem) { g_free (calitem->styles); calitem->styles = NULL; calitem->date_range_changed = TRUE; e_calendar_item_queue_signal_emission (calitem); } static void e_calendar_item_queue_signal_emission (ECalendarItem *calitem) { if (calitem->signal_emission_idle_id == 0) { calitem->signal_emission_idle_id = g_idle_add_full ( G_PRIORITY_HIGH, (GSourceFunc) e_calendar_item_signal_emission_idle_cb, calitem, NULL); } } static gboolean e_calendar_item_signal_emission_idle_cb (gpointer data) { ECalendarItem *calitem; g_return_val_if_fail (E_IS_CALENDAR_ITEM (data), FALSE); GDK_THREADS_ENTER (); calitem = E_CALENDAR_ITEM (data); calitem->signal_emission_idle_id = 0; /* We ref the calitem & check in case it gets destroyed, since we * were getting a free memory write here. */ g_object_ref ((calitem)); if (calitem->date_range_changed) { calitem->date_range_changed = FALSE; g_signal_emit (calitem, e_calendar_item_signals[DATE_RANGE_CHANGED], 0); } if (calitem->selection_changed) { calitem->selection_changed = FALSE; g_signal_emit (calitem, e_calendar_item_signals[SELECTION_CHANGED], 0); } g_object_unref ((calitem)); GDK_THREADS_LEAVE (); return FALSE; } /* Sets a callback to use to get the current time. This is useful if the * application needs to use its own timezone data rather than rely on the * Unix timezone. */ void e_calendar_item_set_get_time_callback (ECalendarItem *calitem, ECalendarItemGetTimeCallback cb, gpointer data, GDestroyNotify destroy) { g_return_if_fail (E_IS_CALENDAR_ITEM (calitem)); if (calitem->time_callback_data && calitem->time_callback_destroy) (*calitem->time_callback_destroy) (calitem->time_callback_data); calitem->time_callback = cb; calitem->time_callback_data = data; calitem->time_callback_destroy = destroy; }