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

/* Week view composite widget for gncal
 *
 * Copyright (C) 1998 The Free Software Foundation
 *
 * Author: Federico Mena <federico@nuclecu.unam.mx>
 */

#include <string.h>
#include "gncal-week-view.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_table_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;
}

GtkWidget *
gncal_week_view_new (Calendar *calendar, time_t start_of_week)
{
    GncalWeekView *wview;
    int i;
#if 0
    g_return_val_if_fail (calendar != NULL, NULL);
#endif
    wview = gtk_type_new (gncal_week_view_get_type ());

    wview->table.homogeneous = TRUE; /* FIXME: eeeeeeeeeek, GtkTable does not have a function to set this */

    wview->calendar = calendar;

    for (i = 0; i < 7; i++) {
        wview->days[i] = GNCAL_DAY_VIEW (gncal_day_view_new (calendar, 0, 0));

        if (i < 5)
            gtk_table_attach (GTK_TABLE (wview), 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 (wview), 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]));
    }

    /* FIXME: for now this is a plain calendar (for not having anything better to put
     * there).  In the final version it should be a nice days/hours matrix with
     * "event density" display as in Sun's "cm" program.
     */

    wview->gtk_calendar = GTK_CALENDAR (gtk_calendar_new ());
    gtk_calendar_display_options (wview->gtk_calendar,
                      GTK_CALENDAR_SHOW_HEADING | GTK_CALENDAR_SHOW_DAY_NAMES);
    gtk_table_attach (GTK_TABLE (wview), 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)
{
    int i;

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

    /* FIXME: update extra widgets */
}

void
gncal_week_view_update (GncalWeekView *wview)
{
    g_return_if_fail (wview != NULL);
    g_return_if_fail (GNCAL_IS_WEEK_VIEW (wview));

    update (wview, TRUE);
}

void
gncal_week_view_set (GncalWeekView *wview, time_t start_of_week)
{
    struct tm tm;
    time_t day_start, day_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 = mktime (&tm);

    /* Calendar */

    gtk_calendar_select_month (wview->gtk_calendar, tm.tm_mon + 1, 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);
}