| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: gtk/timer.cpp |
| 3 | // Purpose: wxTimer implementation |
| 4 | // Author: Robert Roebling |
| 5 | // Id: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | // For compilers that support precompilation, includes "wx.h". |
| 11 | #include "wx/wxprec.h" |
| 12 | |
| 13 | #if wxUSE_TIMER |
| 14 | |
| 15 | #include "wx/timer.h" |
| 16 | |
| 17 | #include "gtk/gtk.h" |
| 18 | |
| 19 | // ---------------------------------------------------------------------------- |
| 20 | // wxTimer |
| 21 | // ---------------------------------------------------------------------------- |
| 22 | |
| 23 | IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler) |
| 24 | |
| 25 | extern "C" { |
| 26 | static gint timeout_callback( gpointer data ) |
| 27 | { |
| 28 | wxTimer *timer = (wxTimer*)data; |
| 29 | |
| 30 | // Don't change the order of anything in this callback! |
| 31 | |
| 32 | if (timer->IsOneShot()) |
| 33 | { |
| 34 | // This sets m_tag to -1 |
| 35 | timer->Stop(); |
| 36 | } |
| 37 | |
| 38 | // When getting called from GDK's timer handler we |
| 39 | // are no longer within GDK's grab on the GUI |
| 40 | // thread so we must lock it here ourselves. |
| 41 | gdk_threads_enter(); |
| 42 | |
| 43 | timer->Notify(); |
| 44 | |
| 45 | // Release lock again. |
| 46 | gdk_threads_leave(); |
| 47 | |
| 48 | if (timer->IsOneShot()) |
| 49 | return FALSE; |
| 50 | |
| 51 | return TRUE; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | void wxTimer::Init() |
| 56 | { |
| 57 | m_tag = -1; |
| 58 | m_milli = 1000; |
| 59 | } |
| 60 | |
| 61 | wxTimer::~wxTimer() |
| 62 | { |
| 63 | wxTimer::Stop(); |
| 64 | } |
| 65 | |
| 66 | bool wxTimer::Start( int millisecs, bool oneShot ) |
| 67 | { |
| 68 | (void)wxTimerBase::Start(millisecs, oneShot); |
| 69 | |
| 70 | if (m_tag != -1) |
| 71 | gtk_timeout_remove( m_tag ); |
| 72 | |
| 73 | m_tag = gtk_timeout_add( m_milli, timeout_callback, this ); |
| 74 | |
| 75 | return TRUE; |
| 76 | } |
| 77 | |
| 78 | void wxTimer::Stop() |
| 79 | { |
| 80 | if (m_tag != -1) |
| 81 | { |
| 82 | gtk_timeout_remove( m_tag ); |
| 83 | m_tag = -1; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | #endif // wxUSE_TIMER |
| 88 | |