/*
*
* 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 -*- */
#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 16
#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 16
/* 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, 0 (Monday) to 6 (Sunday). */
gint 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[7];
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;
/* 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);
/* 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_ */
