path: root/calendar/gui/gncal-week-view.c

/* Week view composite widget for gncal
 *
 * Copyright (C) 1998 The Free Software Foundation
 *
 * Authors: Federico Mena <quartic@gimp.org>
 *          Miguel de Icaza <miguel@kernel.org>
 */

#include <config.h>
#include <string.h>
#include <gtk/gtk.h>
#include "gncal-week-view.h"
#include "timeutil.h"

static void gncal_week_view_init (GncalWeekView *wview);


guint
gncal_week_view_get_type (void)
{
    static guint week_view_type = 0;

    if (!week_view_type) {
        GtkTypeInfo week_view_info = {
            "GncalWeekView",
            sizeof (GncalWeekView),
            sizeof (GncalWeekViewClass),
            (GtkClassInitFunc) NULL,
            (GtkObjectInitFunc) gncal_week_view_init,
            (GtkArgSetFunc) NULL,
            (GtkArgGetFunc) NULL
        };

        week_view_type = gtk_type_unique (gtk_vbox_get_type (), &week_view_info);
    }

    return week_view_type;
}

static void
gncal_week_view_init (GncalWeekView *wview)
{
    int i;

    wview->calendar = NULL;
    memset (&wview->start_of_week, 0, sizeof (wview->start_of_week));

    for (i = 0; i < 7; i++)
        wview->days[i] = NULL;

    wview->gtk_calendar = NULL;
}

static void
jump_to_day (GtkCalendar *cal, GncalWeekView *wview, int day)
{
    struct tm tm;
    time_t t;
    static int inside;
    
    if (inside)
        return;
    inside = 1;
    tm.tm_mday = day;
    tm.tm_mon  = cal->month;
    tm.tm_year = cal->year - 1900;
    tm.tm_hour = 0;
    tm.tm_min  = 0;
    tm.tm_sec  = 0;
    tm.tm_isdst = -1;
    t = mktime (&tm);

    gncal_week_view_set (wview, t);
    inside = 0;
}

static void
jump_to_day_click (GtkCalendar *cal, GncalWeekView *wview)
{
    jump_to_day (cal, wview, cal->selected_day);
}

static void
sync_week (GtkCalendar *cal, GncalWeekView *wview)
{
    jump_to_day (cal, wview, wview->start_of_week.tm_mday + 7);
    gnome_calendar_tag_calendar (wview->calendar, wview->gtk_calendar);
}

static void
double_click_on_weekday (GtkWidget *widget, GdkEvent *e, GncalWeekView *wview)
{
}

GtkWidget *
gncal_week_view_new (GnomeCalendar *calendar, time_t start_of_week)
{
    GncalWeekView *wview;
    GtkWidget *table;
    int i;

    g_return_val_if_fail (calendar != NULL, NULL);

    wview = gtk_type_new (gncal_week_view_get_type ());

    table = gtk_table_new (0, 0, 0);
    gtk_table_set_homogeneous (GTK_TABLE (table), TRUE);
    wview->label = gtk_label_new ("");
    gtk_box_pack_start (GTK_BOX (wview), wview->label, 0, 0, 0);
    gtk_box_pack_start (GTK_BOX (wview), table, 1, 1, 0);
    wview->calendar = calendar;
    for (i = 0; i < 7; i++) {
        wview->days[i] = GNCAL_DAY_VIEW (gncal_day_view_new (calendar, 0, 0));
        gtk_signal_connect (GTK_OBJECT (wview->days [i]), "button_press_event",
                    GTK_SIGNAL_FUNC(double_click_on_weekday), wview);
        
        if (i < 5)
            gtk_table_attach (GTK_TABLE (table), GTK_WIDGET (wview->days[i]),
                      i, i + 1,
                      0, 1,
                      GTK_EXPAND | GTK_FILL | GTK_SHRINK,
                      GTK_EXPAND | GTK_FILL | GTK_SHRINK,
                      0, 0);
        else
            gtk_table_attach (GTK_TABLE (table), GTK_WIDGET (wview->days[i]),
                      i - 2, i - 1,
                      1, 2,
                      GTK_EXPAND | GTK_FILL | GTK_SHRINK,
                      GTK_EXPAND | GTK_FILL | GTK_SHRINK,
                      0, 0);

        gtk_widget_show (GTK_WIDGET (wview->days[i]));
    }

    wview->gtk_calendar = GTK_CALENDAR (gtk_calendar_new ());

    gtk_signal_connect (GTK_OBJECT (wview->gtk_calendar), "day_selected_double_click",
                GTK_SIGNAL_FUNC(jump_to_day_click), wview);
    gtk_signal_connect (GTK_OBJECT (wview->gtk_calendar), "month_changed",
                GTK_SIGNAL_FUNC(sync_week), wview);
    
    gtk_calendar_display_options (wview->gtk_calendar,
                      GTK_CALENDAR_SHOW_HEADING | GTK_CALENDAR_SHOW_DAY_NAMES);
    gtk_table_attach (GTK_TABLE (table), GTK_WIDGET (wview->gtk_calendar),
              0, 3,
              1, 2,
              GTK_EXPAND | GTK_FILL | GTK_SHRINK,
              GTK_EXPAND | GTK_FILL | GTK_SHRINK,
              4, 4);
    gtk_widget_show (GTK_WIDGET (wview->gtk_calendar));

    gncal_week_view_set (wview, start_of_week);

    return GTK_WIDGET (wview);
}

static void
update (GncalWeekView *wview, int update_days, iCalObject *object, int flags)
{
    int i;

    if (update_days)
        for (i = 0; i < 7; i++)
            gncal_day_view_update (wview->days[i], object, flags);

    /* FIXME: update extra widgets */
}

void
gncal_week_view_update (GncalWeekView *wview, iCalObject *ico, int flags)
{
    g_return_if_fail (wview != NULL);
    g_return_if_fail (GNCAL_IS_WEEK_VIEW (wview));

    update (wview, TRUE, ico, flags);
}

void
gncal_week_view_set (GncalWeekView *wview, time_t start_of_week)
{
    struct tm tm;
    time_t day_start, day_end, week_start, week_end;
    int i;

    g_return_if_fail (wview != NULL);
    g_return_if_fail (GNCAL_IS_WEEK_VIEW (wview));

    tm = *localtime (&start_of_week);
    
    /* back up to start of week (Monday) */

    tm.tm_mday -= (tm.tm_wday == 0) ? 6 : (tm.tm_wday - 1);
    
    /* Start of day */

    tm.tm_hour = 0;
    tm.tm_min  = 0;
    tm.tm_sec  = 0;

    day_start = week_start = mktime (&tm);
    
    /* Calendar */

    gtk_calendar_select_month (wview->gtk_calendar, tm.tm_mon, tm.tm_year + 1900);

    /* Day views */

    for (i = 0; i < 7; i++) { /* rest of days */
        tm.tm_mday++;
        day_end = mktime (&tm);

        gncal_day_view_set_bounds (wview->days[i], day_start, day_end - 1);

        day_start = day_end;
    }
    
    update (wview, FALSE, NULL, 0);

    /* The label */
    {
        char buf [80];
        int len;
        struct tm *t;
        
        week_end = time_add_day (week_start, 6);
        t = localtime (&week_start);
        
        strftime (buf, sizeof (buf), "%a %b %d %Y - ", t);
        len = strlen (buf);

            t = localtime (&week_end);
        strftime (buf + len, sizeof (buf) - len, "%a %b %d %Y", t);
        gtk_label_set (GTK_LABEL (wview->label), buf);
        
    }
}