[gnome-games] libgames-support: Make GamesClock work with multiple calls to start()

[Christian Persch <chpe src gnome org>]

commit 50bf21f250663e25bf04035ba0a02e8087d99fa1
Author: Christian Persch <chpe gnome org>
Date:   Sat Jul 18 21:19:20 2009 +0200

    libgames-support: Make GamesClock work with multiple calls to start()
    
    When calling start() on a running clock, don't do anything. Should fix bug #588920.

 libgames-support/games-clock.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/libgames-support/games-clock.c b/libgames-support/games-clock.c
index 4cc9f74..b982c79 100644
--- a/libgames-support/games-clock.c
+++ b/libgames-support/games-clock.c
@@ -115,6 +115,9 @@ games_clock_start (GamesClock *clock_widget)
 {
   g_return_if_fail (GAMES_IS_CLOCK (clock_widget));
 
+  if (clock_widget->started)
+    return; /* nothing to do */
+
   clock_widget->started = TRUE;
   clock_widget->start_time = time (NULL) - (clock_widget->stop_time - clock_widget->start_time);
 
@@ -148,6 +151,9 @@ games_clock_stop (GamesClock *clock_widget)
 {
   g_return_if_fail (GAMES_IS_CLOCK (clock_widget));
 
+  if (!clock_widget->started)
+    return;
+
   clock_widget->started = FALSE;
   clock_widget->stop_time = time (NULL);
 
@@ -201,8 +207,10 @@ games_clock_add_seconds (GamesClock *clock_widget,
 {
   g_return_if_fail (GAMES_IS_CLOCK (clock_widget));
 
-  if (!clock_widget->started)
+  if (!clock_widget->started) {
     g_warning ("Clock not started, cannot add seconds!\n");
+    return;
+  }
 
   clock_widget->start_time -= seconds;
   clock_paint (clock_widget);