/* Functions to mark calendars
*
* Copyright (C) 1998 Red Hat Software, Inc.
*
* Author: Federico Mena <federico@nuclecu.unam.mx>
*/
#include <config.h>
#include "gnome-cal.h"
#include "main.h"
#include "mark.h"
#include "timeutil.h"
/* Frees the specified data when an object is destroyed */
static void
free_data (GtkObject *object, gpointer data)
{
g_free (data);
}
/* If the array of "marked" attributes for the days in a a month item has not been created yet, this
* function creates the array and clears it. Otherwise, it just returns the existing array.
*/
static char *
get_attributes (GnomeMonthItem *mitem)
{
char *attrs;
attrs = gtk_object_get_data (GTK_OBJECT (mitem), "day_mark_attributes");
if (!attrs) {
attrs = g_new0 (char, 42);
gtk_object_set_data (GTK_OBJECT (mitem), "day_mark_attributes", attrs);
gtk_signal_connect (GTK_OBJECT (mitem), "destroy",
(GtkSignalFunc) free_data,
attrs);
}
return attrs;
}
void
colorify_month_item (GnomeMonthItem *mitem, GetColorFunc func, gpointer func_data)
{
g_return_if_fail (mitem != NULL);
g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
g_return_if_fail (func != NULL);
unmark_month_item (mitem);
/* We have to do this in several calls to gnome_canvas_item_set(), as color_spec_from_prop()
* returns a pointer to a static string -- and we need several values.
*/
gnome_canvas_item_set (GNOME_CANVAS_ITEM (mitem),
"heading_color", (* func) (COLOR_PROP_HEADING_COLOR, func_data),
NULL);
gnome_canvas_item_set (GNOME_CANVAS_ITEM (mitem),
"outline_color", (* func) (COLOR_PROP_OUTLINE_COLOR, func_data),
NULL);
gnome_canvas_item_set (GNOME_CANVAS_ITEM (mitem),
"day_box_color", (* func) (COLOR_PROP_EMPTY_DAY_BG, func_data),
NULL);
gnome_canvas_item_set (GNOME_CANVAS_ITEM (mitem),
"day_color", (* func) (COLOR_PROP_DAY_FG, func_data),
NULL);
}
/* In the month item, marks all the days that are touched by the specified time span. Assumes that
* the time span is completely contained within the month. The array of day attributes is modified
* accordingly.
*/
static void
mark_event_in_month (GnomeMonthItem *mitem, time_t start, time_t end)
{
struct tm tm;
int day_index;
tm = *localtime (&start);
for (; start <= end; start += 60 * 60 * 24) {
mktime (&tm); /* normalize the time */
/* Figure out the day index that corresponds to this time */
day_index = gnome_month_item_day2index (mitem, tm.tm_mday);
g_assert (day_index >= 0);
/* Mark the day box */
mark_month_item_index (mitem, day_index, default_color_func, NULL);
/* Next day */
tm.tm_mday++;
}
}
void
mark_month_item (GnomeMonthItem *mitem, Calendar *cal)
{
time_t month_begin, month_end;
GList *list, *l;
CalendarObject *co;
g_return_if_fail (mitem != NULL);
g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
g_return_if_fail (cal != NULL);
month_begin = time_month_begin (time_from_day (mitem->year, mitem->month, 1));
month_end = time_month_end (month_begin);
list = calendar_get_events_in_range (cal, month_begin, month_end);
for (l = list; l; l = l->next) {
co = l->data;
/* We clip the event's start and end times to the month's limits */
mark_event_in_month (mitem, MAX (co->ev_start, month_begin), MIN (co->ev_end, month_end));
}
calendar_destroy_event_list (list);
}
void
mark_month_item_index (GnomeMonthItem *mitem, int index, GetColorFunc func, gpointer func_data)
{
char *attrs;
GnomeCanvasItem *item;
g_return_if_fail (mitem != NULL);
g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
g_return_if_fail ((index >= 0) && (index < 42));
g_return_if_fail (func != NULL);
attrs = get_attributes (mitem);
attrs[index] = TRUE;
item = gnome_month_item_num2child (mitem, GNOME_MONTH_ITEM_DAY_BOX + index);
gnome_canvas_item_set (item,
"fill_color", (* func) (COLOR_PROP_MARK_DAY_BG, func_data),
NULL);
}
void
unmark_month_item (GnomeMonthItem *mitem)
{
int i;
char *attrs;
GnomeCanvasItem *item;
g_return_if_fail (mitem != NULL);
g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
attrs = get_attributes (mitem);
/* Find marked days and unmark them by turning off their marked attribute flag and changing
* the color.
*/
for (i = 0; i < 42; i++)
if (attrs[i]) {
attrs[i] = FALSE;
item = gnome_month_item_num2child (mitem, GNOME_MONTH_ITEM_DAY_BOX + i);
gnome_canvas_item_set (item,
"fill_color", color_spec_from_prop (COLOR_PROP_EMPTY_DAY_BG),
NULL);
}
}
/* Handles EnterNotify and LeaveNotify events from the month item's day groups, and performs
* appropriate prelighting.
*/
static gint
day_event (GnomeCanvasItem *item, GdkEvent *event, gpointer data)
{
GnomeMonthItem *mitem;
GnomeCanvasItem *box;
int child_num, day;
GetColorFunc func;
gpointer func_data;
char *color;
char *attrs;
/* We only accept enters and leaves */
if (!((event->type == GDK_ENTER_NOTIFY) || (event->type == GDK_LEAVE_NOTIFY)))
return FALSE;
/* Get index information */
mitem = GNOME_MONTH_ITEM (data);
child_num = gnome_month_item_child2num (mitem, item);
day = gnome_month_item_num2day (mitem, child_num);
if (day == 0)
return FALSE; /* it was a day outside the month's range */
child_num -= GNOME_MONTH_ITEM_DAY_GROUP;
box = gnome_month_item_num2child (mitem, GNOME_MONTH_ITEM_DAY_BOX + child_num);
/* Get colors */
func = gtk_object_get_data (GTK_OBJECT (mitem), "prelight_color_func");
func_data = gtk_object_get_data (GTK_OBJECT (mitem), "prelight_color_data");
/* Now actually set the proper color in the item */
switch (event->type) {
case GDK_ENTER_NOTIFY:
color = (* func) (COLOR_PROP_PRELIGHT_DAY_BG, func_data);
gnome_canvas_item_set (box,
"fill_color", color,
NULL);
break;
case GDK_LEAVE_NOTIFY:
attrs = get_attributes (mitem);
color = (* func) (attrs[child_num] ? COLOR_PROP_MARK_DAY_BG : COLOR_PROP_EMPTY_DAY_BG,
func_data);
gnome_canvas_item_set (box,
"fill_color", color,
NULL);
break;
default:
g_assert_not_reached ();
}
return TRUE;
}
void
month_item_prepare_prelight (GnomeMonthItem *mitem, GetColorFunc func, gpointer func_data)
{
GnomeCanvasItem *day_group;
int i;
g_return_if_fail (mitem != NULL);
g_return_if_fail (GNOME_IS_MONTH_ITEM (mitem));
g_return_if_fail (func != NULL);
/* Store the function in the object data */
gtk_object_set_data (GTK_OBJECT (mitem), "prelight_color_func", func);
gtk_object_set_data (GTK_OBJECT (mitem), "prelight_color_data", func_data);
/* Connect the appropriate signals to perform prelighting */
for (i = 0; i < 42; i++) {
day_group = gnome_month_item_num2child (GNOME_MONTH_ITEM (mitem), GNOME_MONTH_ITEM_DAY_GROUP + i);
gtk_signal_connect (GTK_OBJECT (day_group), "event",
(GtkSignalFunc) day_event,
mitem);
}
}
char *
default_color_func (ColorProp propnum, gpointer data)
{
return color_spec_from_prop (propnum);
}
