/*
*
* 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 <http://www.gnu.org/licenses/>
*
*
* Authors:
* Damon Chaplin <damon@ximian.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
#if !defined (__E_UTIL_H_INSIDE__) && !defined (LIBEUTIL_COMPILATION)
#error "Only <e-util/e-util.h> should be included directly."
#endif
#ifndef _E_CALENDAR_ITEM_H_
#define _E_CALENDAR_ITEM_H_
#include <libgnomecanvas/gnome-canvas.h>
G_BEGIN_DECLS
/*
* ECalendarItem - canvas item displaying a calendar.
*/
#define E_CALENDAR_ITEM_YPAD_ABOVE_MONTH_NAME 1
#define E_CALENDAR_ITEM_YPAD_BELOW_MONTH_NAME 1
/* The number of rows & columns of days in each month. */
#define E_CALENDAR_ROWS_PER_MONTH 6
#define E_CALENDAR_COLS_PER_MONTH 7
/* Used to mark days as bold in e_calendar_item_mark_day(). */
#define E_CALENDAR_ITEM_MARK_BOLD (1 << 0)
#define E_CALENDAR_ITEM_MARK_ITALIC (1 << 1)
/*
* These are the padding sizes between various pieces of the calendar.
*/
/* The minimum padding around the numbers in each cell/day. */
#define E_CALENDAR_ITEM_MIN_CELL_XPAD 4
#define E_CALENDAR_ITEM_MIN_CELL_YPAD 0
/* Vertical padding. */
#define E_CALENDAR_ITEM_YPAD_ABOVE_DAY_LETTERS 1
#define E_CALENDAR_ITEM_YPAD_BELOW_DAY_LETTERS 0
#define E_CALENDAR_ITEM_YPAD_ABOVE_CELLS 1
#define E_CALENDAR_ITEM_YPAD_BELOW_CELLS 2
/* Horizontal padding in the heading bars. */
#define E_CALENDAR_ITEM_XPAD_BEFORE_MONTH_NAME_WITH_BUTTON 10
#define E_CALENDAR_ITEM_XPAD_BEFORE_MONTH_NAME 3
#define E_CALENDAR_ITEM_XPAD_AFTER_MONTH_NAME 3
#define E_CALENDAR_ITEM_XPAD_AFTER_MONTH_NAME_WITH_BUTTON 10
/* Horizontal padding in the month displays. */
#define E_CALENDAR_ITEM_XPAD_BEFORE_WEEK_NUMBERS 4
#define E_CALENDAR_ITEM_XPAD_AFTER_WEEK_NUMBERS 2
#define E_CALENDAR_ITEM_XPAD_BEFORE_CELLS 1
#define E_CALENDAR_ITEM_XPAD_AFTER_CELLS 4
/* These index our colors array. */
typedef enum
{
E_CALENDAR_ITEM_COLOR_TODAY_BOX,
E_CALENDAR_ITEM_COLOR_SELECTION_FG,
E_CALENDAR_ITEM_COLOR_SELECTION_BG_FOCUSED,
E_CALENDAR_ITEM_COLOR_SELECTION_BG,
E_CALENDAR_ITEM_COLOR_PREV_OR_NEXT_MONTH_FG,
E_CALENDAR_ITEM_COLOR_LAST
} ECalendarItemColors;
typedef struct _ECalendarItem ECalendarItem;
typedef struct _ECalendarItemClass ECalendarItemClass;
/* The type of the callback function optionally used to get the colors to
* use for each day. */
typedef void (*ECalendarItemStyleCallback) (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,
gpointer data);
/* The type of the callback function optionally used to get the current time.
*/
typedef struct tm (*ECalendarItemGetTimeCallback) (ECalendarItem *calitem,
gpointer data);
/* Standard GObject macros */
#define E_TYPE_CALENDAR_ITEM \
(e_calendar_item_get_type ())
#define E_CALENDAR_ITEM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST \
((obj), E_TYPE_CALENDAR_ITEM, ECalendarItem))
#define E_CALENDAR_ITEM_CLASS(cls) \
(G_TYPE_CHECK_CLASS_CAST \
((cls), E_TYPE_CALENDAR_ITEM, ECalendarItemClass))
#define E_IS_CALENDAR_ITEM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE \
((obj), E_TYPE_CALENDAR_ITEM))
#define E_IS_CALENDAR_ITEM_CLASS(cls) \
(G_TYPE_CHECK_CLASS_TYPE \
((cls), E_TYPE_CALENDAR_ITEM))
#define E_CALENDAR_ITEM_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS \
((obj), E_TYPE_CALENDAR_ITEM, ECalendarItemClass))
struct _ECalendarItem {
GnomeCanvasItem canvas_item;
/* The year & month of the first calendar being displayed. */
gint year;
gint month; /* 0 to 11 */
/* Points to an array of styles, one gchar for each day. We use 32
* chars for each month, with n + 2 months, where n is the number of
* complete months shown (since we show some days before the first
* month and after the last month grayes out).
* A value of 0 is the default, and 1 is bold. */
guint8 *styles;
/*
* Options.
*/
/* The minimum & maximum number of rows & columns of months.
* If the maximum values are -1 then there is no maximum.
* The minimum valies default to 1. The maximum values to -1. */
gint min_rows;
gint min_cols;
gint max_rows;
gint max_cols;
/* The actual number of rows & columns of months. */
gint rows;
gint cols;
/* Whether we show week nubers. */
gboolean show_week_numbers;
/* whether to keep same week days selected on week number click */
gboolean keep_wdays_on_weeknum_click;
/* The first day of the week. */
GDateWeekday week_start_day;
/* Whether the cells expand to fill extra space. */
gboolean expand;
/* The maximum number of days that can be selected. Defaults to 1. */
gint max_days_selected;
/* The number of days selected before we switch to selecting whole
* weeks, or -1 if we never switch. Defaults to -1. */
gint days_to_start_week_selection;
/* Whether the selection is moved when we move back/forward one month.
* Used for things like the EDateEdit which only want the selection to
* be changed when the user explicitly selects a day. */
gboolean move_selection_when_moving;
/* Whether the selection day is preserved when we move back/forward
* one month. Used for the work week and week view. */
gboolean preserve_day_when_moving;
/* Whether to display the pop-up, TRUE by default */
gboolean display_popup;
/*
* Internal stuff.
*/
/* Bounds of item. */
gdouble x1, y1, x2, y2;
/* The minimum size of each month, based on the fonts used. */
gint min_month_width;
gint min_month_height;
/* The actual size of each month, after dividing extra space. */
gint month_width;
gint month_height;
/* The offset to the left edge of the first calendar. */
gint x_offset;
/* The padding around each calendar month. */
gint month_lpad, month_rpad;
gint month_tpad, month_bpad;
/* The size of each cell. */
gint cell_width;
gint cell_height;
/* The current selection. The month offsets are from 0, which is the
* top-left calendar month view. Note that -1 is used for the last days
* from the previous month. The days are real month days. */
gboolean selecting;
GDate *selecting_axis;
gboolean selection_dragging_end;
gboolean selection_from_full_week;
gboolean selection_set;
gint selection_start_month_offset;
gint selection_start_day;
gint selection_end_month_offset;
gint selection_end_day;
gint selection_real_start_month_offset;
gint selection_real_start_day;
/* Widths of the day characters. */
gint day_widths[8]; /* indexed by GDateWeekday */
gint max_day_width;
/* Widths of the digits, '0' .. '9'. */
gint digit_widths[10];
gint max_digit_width;
gint week_number_digit_widths[10];
gint max_week_number_digit_width;
gint max_month_name_width;
/* Fonts for drawing text. If font isn't set it uses the font from the
* canvas widget. If week_number_font isn't set it uses font. */
PangoFontDescription *font_desc;
PangoFontDescription *week_number_font_desc;
ECalendarItemStyleCallback style_callback;
gpointer style_callback_data;
GDestroyNotify style_callback_destroy;
ECalendarItemGetTimeCallback time_callback;
gpointer time_callback_data;
GDestroyNotify time_callback_destroy;
/* Colors for drawing. */
GdkColor colors[E_CALENDAR_ITEM_COLOR_LAST];
/* Our idle handler for emitting signals. */
gint signal_emission_idle_id;
/* A flag to indicate that the selection or date range has changed.
* When set the idle function will emit the signal and reset it to
* FALSE. This is so we don't emit it several times when args are set
* etc. */
gboolean selection_changed;
gboolean date_range_changed;
};
struct _ECalendarItemClass {
GnomeCanvasItemClass parent_class;
void (* date_range_changed) (ECalendarItem *calitem);
void (* selection_changed) (ECalendarItem *calitem);
void (* selection_preview_changed) (ECalendarItem *calitem);
};
GType e_calendar_item_get_type (void) G_GNUC_CONST;
/* FIXME: months are 0-11 throughout, but 1-12 may be better. */
void e_calendar_item_get_first_month (ECalendarItem *calitem,
gint *year,
gint *month);
void e_calendar_item_set_first_month (ECalendarItem *calitem,
gint year,
gint month);
/* Get the maximum number of days selectable */
gint e_calendar_item_get_max_days_sel (ECalendarItem *calitem);
/* Set the maximum number of days selectable */
void e_calendar_item_set_max_days_sel (ECalendarItem *calitem,
gint days);
/* Get the maximum number of days selectable */
gint e_calendar_item_get_days_start_week_sel (ECalendarItem *calitem);
/* Set the maximum number of days selectable */
void e_calendar_item_set_days_start_week_sel (ECalendarItem *calitem,
gint days);
/* Set the maximum number of days before whole weeks are selected */
gboolean
e_calendar_item_get_display_popup (ECalendarItem *calitem);
/* Get the maximum number of days before whole weeks are selected */
void e_calendar_item_set_display_popup (ECalendarItem *calitem,
gboolean display);
/* 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);
/* Returns the selected date range. It returns FALSE if no days are currently
* selected. */
gboolean
e_calendar_item_get_selection (ECalendarItem *calitem,
GDate *start_date,
GDate *end_date);
/* Sets the selected date range, and changes the date range shown so at least
* the start of the selection is shown. If start_date is NULL it clears the
* selection. */
void e_calendar_item_set_selection (ECalendarItem *calitem,
const GDate *start_date,
const GDate *end_date);
/* Marks a particular day. Passing E_CALENDAR_ITEM_MARK_BOLD as the day style
* will result in the day being shown as bold by default. The style callback
* could support more day_styles, or the style callback could determine the
* colors itself, without needing to mark days. */
void e_calendar_item_clear_marks (ECalendarItem *calitem);
void e_calendar_item_mark_day (ECalendarItem *calitem,
gint year,
gint month,
gint day,
guint8 day_style,
gboolean add_day_style);
/* Mark a range of days. Any days outside the currently shown range are
* ignored. */
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);
/* 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);
/* 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);
void e_calendar_item_normalize_date (ECalendarItem *calitem,
gint *year,
gint *month);
gint e_calendar_item_get_week_number (ECalendarItem *calitem,
gint day,
gint month,
gint year);
void e_calendar_item_style_set (GtkWidget *widget,
ECalendarItem *calitem);
G_END_DECLS
#endif /* _E_CALENDAR_ITEM_H_ */
