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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: timer.cpp | |
3 | // Purpose: wxTimer implementation | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 04/01/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart and Markus Holzem | |
9 | // Licence: wxWindows license | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "timer.h" | |
14 | #endif | |
15 | ||
16 | // For compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #ifdef __BORLANDC__ | |
20 | #pragma hdrstop | |
21 | #endif | |
22 | ||
23 | #ifndef WX_PRECOMP | |
24 | #include "wx/setup.h" | |
25 | #include "wx/window.h" | |
26 | #include "wx/list.h" | |
27 | #include "wx/event.h" | |
28 | #include "wx/app.h" | |
29 | #include "wx/intl.h" | |
30 | #include "wx/log.h" | |
31 | #endif | |
32 | ||
33 | #include "wx/timer.h" | |
34 | ||
35 | #include "wx/msw/private.h" | |
36 | ||
37 | // ---------------------------------------------------------------------------- | |
38 | // private functions | |
39 | // ---------------------------------------------------------------------------- | |
40 | ||
41 | wxList wxTimerList(wxKEY_INTEGER); | |
42 | UINT WINAPI _EXPORT wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD); | |
43 | ||
44 | // ---------------------------------------------------------------------------- | |
45 | // macros | |
46 | // ---------------------------------------------------------------------------- | |
47 | ||
48 | #ifdef __WIN32__ | |
49 | #define _EXPORT | |
50 | #else | |
51 | #define _EXPORT _export | |
52 | #endif | |
53 | ||
54 | IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject) | |
55 | ||
56 | // ============================================================================ | |
57 | // implementation | |
58 | // ============================================================================ | |
59 | ||
60 | // ---------------------------------------------------------------------------- | |
61 | // wxTimer class | |
62 | // ---------------------------------------------------------------------------- | |
63 | ||
64 | void wxTimer::Init() | |
65 | { | |
66 | m_id = 0; | |
67 | } | |
68 | ||
69 | wxTimer::~wxTimer() | |
70 | { | |
71 | wxTimer::Stop(); | |
72 | ||
73 | wxTimerList.DeleteObject(this); | |
74 | } | |
75 | ||
76 | bool wxTimer::Start(int milliseconds, bool oneShot) | |
77 | { | |
78 | (void)wxTimerBase::Start(milliseconds, oneShot); | |
79 | ||
80 | wxCHECK_MSG( m_milli > 0, FALSE, wxT("invalid value for timer timeour") ); | |
81 | ||
82 | wxTimerList.DeleteObject(this); | |
83 | TIMERPROC wxTimerProcInst = (TIMERPROC) | |
84 | MakeProcInstance((FARPROC)wxTimerProc, wxGetInstance()); | |
85 | ||
86 | m_id = SetTimer(NULL, (UINT)(m_id ? m_id : 1), | |
87 | (UINT)milliseconds, wxTimerProcInst); | |
88 | if ( m_id > 0 ) | |
89 | { | |
90 | wxTimerList.Append(m_id, this); | |
91 | ||
92 | return TRUE; | |
93 | } | |
94 | else | |
95 | { | |
96 | wxLogSysError(_("Couldn't create a timer")); | |
97 | ||
98 | return FALSE; | |
99 | } | |
100 | } | |
101 | ||
102 | void wxTimer::Stop() | |
103 | { | |
104 | if ( m_id ) | |
105 | { | |
106 | KillTimer(NULL, (UINT)m_id); | |
107 | wxTimerList.DeleteObject(this); | |
108 | } | |
109 | ||
110 | m_id = 0; | |
111 | } | |
112 | ||
113 | // ---------------------------------------------------------------------------- | |
114 | // private functions | |
115 | // ---------------------------------------------------------------------------- | |
116 | ||
117 | void wxProcessTimer(wxTimer& timer) | |
118 | { | |
119 | // Avoid to process spurious timer events | |
120 | if ( timer.m_id == 0) | |
121 | return; | |
122 | ||
123 | if ( timer.IsOneShot() ) | |
124 | timer.Stop(); | |
125 | ||
126 | timer.Notify(); | |
127 | } | |
128 | ||
129 | UINT WINAPI _EXPORT wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD) | |
130 | { | |
131 | wxNode *node = wxTimerList.Find((long)idTimer); | |
132 | ||
133 | wxCHECK_MSG( node, 0, wxT("bogus timer id in wxTimerProc") ); | |
134 | ||
135 | wxProcessTimer(*(wxTimer *)node->Data()); | |
136 | ||
137 | return 0; | |
138 | } |