+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
+/*
+ * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
+ *
+ * Copyright (C) 2014, Rob Norris <rw_norris@hotmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#include "vikdatetime_edit_dialog.h"
+
+// Show leading zeros
+static gboolean on_output ( GtkSpinButton *spin, gpointer data )
+{
+ GtkAdjustment *adjustment = gtk_spin_button_get_adjustment ( spin );
+ gint value = (gint)gtk_adjustment_get_value ( adjustment );
+ gchar *text = g_strdup_printf ( "%02d", value );
+ gtk_entry_set_text ( GTK_ENTRY (spin), text );
+ g_free ( text );
+
+ return TRUE;
+}
+
+/**
+ * vik_datetime_edit_dialog:
+ * @parent: The parent window
+ * @title: The title to use for the dialog
+ * @initial_time: The inital date/time to be shown
+ * @tz: The #GTimeZone this dialog will operate in
+ *
+ * Returns: A time selected by the user via this dialog
+ * Even though a time of zero is notionally valid - consider it unlikely to be actually wanted!
+ * Thus if the time is zero then the dialog was cancelled or somehow an invalid date was encountered.
+ */
+time_t vik_datetime_edit_dialog ( GtkWindow *parent, const gchar *title, time_t initial_time, GTimeZone *tz )
+{
+ g_return_val_if_fail ( tz, 0 );
+
+ GtkWidget *dialog = gtk_dialog_new_with_buttons ( title,
+ parent,
+ GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
+ GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
+ GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
+ NULL );
+
+ gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
+ GtkWidget *response_w = NULL;
+#if GTK_CHECK_VERSION (2, 20, 0)
+ response_w = gtk_dialog_get_widget_for_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
+#endif
+
+ GtkWidget *label;
+ GtkWidget *cal = gtk_calendar_new ();
+
+ // Set according to the given date/time + timezone for display
+ GDateTime *gdt_in = g_date_time_new_from_unix_utc ( (gint64)initial_time );
+ GDateTime *gdt_tz = g_date_time_to_timezone ( gdt_in, tz );
+ g_date_time_unref ( gdt_in );
+
+ gtk_calendar_select_month ( GTK_CALENDAR(cal), g_date_time_get_month(gdt_tz)-1, g_date_time_get_year (gdt_tz) );
+ gtk_calendar_select_day ( GTK_CALENDAR(cal), g_date_time_get_day_of_month(gdt_tz) );
+
+ GtkWidget *hbox_time = gtk_hbox_new ( FALSE, 1 );
+
+ label = gtk_label_new ( g_date_time_get_timezone_abbreviation(gdt_tz) );
+ gtk_box_pack_start ( GTK_BOX(hbox_time), label, FALSE, FALSE, 5 );
+
+ GtkWidget *sb_hours = gtk_spin_button_new_with_range ( 0.0, 23.0, 1.0 );
+ gtk_box_pack_start ( GTK_BOX(hbox_time), sb_hours, FALSE, FALSE, 0 );
+ gtk_spin_button_set_value ( GTK_SPIN_BUTTON(sb_hours), g_date_time_get_hour(gdt_tz) );
+ g_signal_connect ( sb_hours, "output", G_CALLBACK(on_output), NULL );
+
+ label = gtk_label_new ( ":" );
+ gtk_box_pack_start ( GTK_BOX(hbox_time), label, FALSE, FALSE, 0 );
+
+ GtkWidget *sb_minutes = gtk_spin_button_new_with_range ( 0.0, 59.0, 1.0 );
+ gtk_box_pack_start ( GTK_BOX(hbox_time), sb_minutes, FALSE, FALSE, 0);
+ gtk_spin_button_set_value ( GTK_SPIN_BUTTON(sb_minutes), g_date_time_get_minute(gdt_tz) );
+ g_signal_connect ( sb_minutes, "output", G_CALLBACK(on_output), NULL );
+
+ label = gtk_label_new ( ":" );
+ gtk_box_pack_start(GTK_BOX(hbox_time), label, FALSE, FALSE, 0);
+
+ GtkWidget *sb_seconds = gtk_spin_button_new_with_range ( 0.0, 59.0, 1.0 );
+ gtk_box_pack_start ( GTK_BOX(hbox_time), sb_seconds, FALSE, FALSE, 0 );
+ gtk_spin_button_set_value ( GTK_SPIN_BUTTON(sb_seconds), g_date_time_get_second(gdt_tz) );
+ g_signal_connect ( sb_seconds, "output", G_CALLBACK(on_output), NULL );
+
+ gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), cal, FALSE, FALSE, 0 );
+ gtk_box_pack_start ( GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(dialog))), hbox_time, FALSE, FALSE, 5 );
+
+ if ( response_w )
+ gtk_widget_grab_focus ( response_w );
+
+ g_date_time_unref ( gdt_tz );
+
+ gtk_widget_show_all ( dialog );
+ if ( gtk_dialog_run ( GTK_DIALOG(dialog) ) != GTK_RESPONSE_ACCEPT ) {
+ gtk_widget_destroy ( dialog );
+ return 0;
+ }
+
+ // Read values
+ guint year = 0;
+ guint month = 0;
+ guint day = 0;
+ guint hours = 0;
+ guint minutes = 0;
+ guint seconds = 0;
+
+ gtk_calendar_get_date ( GTK_CALENDAR(cal), &year, &month, &day );
+ hours = gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(sb_hours) );
+ minutes = gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(sb_minutes) );
+ seconds = gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(sb_seconds) );
+
+ gtk_widget_destroy(dialog);
+
+ time_t ans = initial_time;
+ GDateTime *gdt_ans = g_date_time_new ( tz, year, month+1, day, hours, minutes, (gdouble)seconds );
+ if ( gdt_ans ) {
+ ans = g_date_time_to_unix ( gdt_ans );
+ g_date_time_unref ( gdt_ans );
+ }
+
+ return ans;
+}