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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/gtk1/timer.cpp | |
3 | // Purpose: wxTimer implementation | |
4 | // Author: Robert Roebling | |
5 | // Copyright: (c) 1998 Robert Roebling | |
6 | // Licence: wxWindows licence | |
7 | ///////////////////////////////////////////////////////////////////////////// | |
8 | ||
9 | #include "wx/wxprec.h" | |
10 | ||
11 | #if wxUSE_TIMER | |
12 | ||
13 | #include "wx/gtk1/private/timer.h" | |
14 | ||
15 | #include "gtk/gtk.h" | |
16 | ||
17 | // ---------------------------------------------------------------------------- | |
18 | // wxTimer | |
19 | // ---------------------------------------------------------------------------- | |
20 | ||
21 | extern "C" { | |
22 | static gint timeout_callback(void *data) | |
23 | { | |
24 | wxTimerImpl * const timer = (wxTimerImpl *)data; | |
25 | ||
26 | const bool keepGoing = !timer->IsOneShot(); | |
27 | if ( !keepGoing ) | |
28 | timer->Stop(); | |
29 | ||
30 | // When getting called from GDK's timer handler we | |
31 | // are no longer within GDK's grab on the GUI | |
32 | // thread so we must lock it here ourselves. | |
33 | gdk_threads_enter(); | |
34 | ||
35 | timer->Notify(); | |
36 | ||
37 | // Release lock again. | |
38 | gdk_threads_leave(); | |
39 | ||
40 | return keepGoing; | |
41 | } | |
42 | } | |
43 | ||
44 | bool wxGTKTimerImpl::Start(int millisecs, bool oneShot) | |
45 | { | |
46 | if ( !wxTimerImpl::Start(millisecs, oneShot) ) | |
47 | return false; | |
48 | ||
49 | wxASSERT_MSG( m_tag == -1, wxT("shouldn't be still running") ); | |
50 | ||
51 | m_tag = gtk_timeout_add( m_milli, timeout_callback, this ); | |
52 | ||
53 | return true; | |
54 | } | |
55 | ||
56 | void wxGTKTimerImpl::Stop() | |
57 | { | |
58 | wxASSERT_MSG( m_tag != -1, wxT("should be running") ); | |
59 | ||
60 | gtk_timeout_remove( m_tag ); | |
61 | m_tag = -1; | |
62 | } | |
63 | ||
64 | #endif // wxUSE_TIMER | |
65 |