// Name: msw/timer.cpp
// Purpose: wxTimer implementation
// Author: Julian Smart
-// Modified by:
+// Modified by: Vadim Zeitlin (use hash map instead of list, global rewrite)
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
#endif
#include "wx/hashmap.h"
-#include "wx/module.h"
#include "wx/timer.h"
#include "wx/msw/private.h"
-// from utils.cpp
-extern "C" HWND
-wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
-
// ----------------------------------------------------------------------------
-// private functions
+// private globals
// ----------------------------------------------------------------------------
-WX_DECLARE_HASH_MAP( long,
- wxTimer *,
- wxIntegerHash,
- wxIntegerEqual,
- wxTimerMap );
-
-wxTimerMap wxTimerList;
-
-void WINAPI wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD);
+// define a hash containing all the timers: it is indexed by timer id and
+// contains the corresponding timer
+WX_DECLARE_HASH_MAP(unsigned long, wxTimer *, wxIntegerHash, wxIntegerEqual,
+ wxTimerMap);
-// ----------------------------------------------------------------------------
-// macros
-// ----------------------------------------------------------------------------
+// instead of using a global here, wrap it in a static function as otherwise it
+// could have been used before being initialized if a timer object were created
+// globally
+static wxTimerMap& TimerMap()
+{
+ static wxTimerMap s_timerMap;
-IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
+ return s_timerMap;
+}
// ----------------------------------------------------------------------------
-// globals
+// private functions
// ----------------------------------------------------------------------------
-// these variables are for timer shared hwnd management
-static const wxChar *wxMSWTIMER_WNDCLASSNAME = wxT("_wxTimer_Internal_Class");
-static LPCTSTR s_classnameTimerWnd = NULL;
-static HWND s_hwndTimer = NULL;
+// timer callback used for all timers
+void WINAPI wxTimerProc(HWND hwnd, UINT msg, UINT idTimer, DWORD dwTime);
// ----------------------------------------------------------------------------
-// private classes
+// macros
// ----------------------------------------------------------------------------
-class wxTimerModule : public wxModule
-{
-public:
- virtual bool OnInit() { return true; }
- virtual void OnExit()
- {
- if ( s_hwndTimer )
- {
- ::DestroyWindow(s_hwndTimer);
- s_hwndTimer = NULL;
-
- if ( !::UnregisterClass(wxMSWTIMER_WNDCLASSNAME, wxGetInstance()) )
- {
- wxLogLastError(_T("UnregisterClass(wxTimerClass)"));
- }
-
- s_classnameTimerWnd = NULL;
- }
- }
-
-private:
- DECLARE_DYNAMIC_CLASS(wxTimerModule)
-};
+IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
// ============================================================================
// implementation
void wxTimer::Init()
{
m_id = 0;
- m_hwnd = NULL;
}
wxTimer::~wxTimer()
{
- // save id as Stop() changes it
- long id = m_id;
-
wxTimer::Stop();
-
- wxTimerList.erase(id);
}
bool wxTimer::Start(int milliseconds, bool oneShot)
{
- wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeour") );
-
(void)wxTimerBase::Start(milliseconds, oneShot);
- // find a window for SetTimer(): it should be a valid HWND owned by this
- // thread (even if we had a non NULL m_hwnd before, reset it in case the
- // owner has changed)
- m_hwnd = NULL;
-
- // first try the owner window
- if ( m_owner )
- {
- wxWindow *win = wxDynamicCast(m_owner, wxWindow);
- if ( win )
- {
- m_hwnd = win->GetHWND();
- }
- }
-
- // if not, use a shared hidden window
- if ( !m_hwnd )
- {
- if ( !s_hwndTimer )
- {
- s_hwndTimer = wxCreateHiddenWindow
- (
- &s_classnameTimerWnd,
- wxMSWTIMER_WNDCLASSNAME,
- ::DefWindowProc
- );
-
- if ( !s_hwndTimer )
- {
- wxASSERT_MSG( s_hwndTimer, wxT("can't create a HWND for wxTimer") );
- return false;
- }
- }
-
- m_hwnd = (WXHWND)s_hwndTimer;
-
- }
+ wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeout") );
m_id = ::SetTimer
(
- (HWND)m_hwnd,
- (UINT)(m_id ? m_id : 1),
- (UINT)m_milli,
- (TIMERPROC)wxTimerProc
+ NULL, // don't use window
+ 1, // id ignored with NULL hwnd anyhow
+ (UINT)m_milli, // delay
+ wxTimerProc // timer proc to call
);
if ( !m_id )
return false;
}
- wxTimerList[m_id] = this;
+ // check that SetTimer() didn't reuse an existing id: according to the MSDN
+ // this can happen and this would be catastrophic to us as we rely on ids
+ // uniquely identifying the timers because we use them as keys in the hash
+ if ( TimerMap().find(m_id) != TimerMap().end() )
+ {
+ wxLogError(_("Timer creation failed."));
+
+ ::KillTimer(NULL, m_id);
+ m_id = 0;
+
+ return false;
+ }
+
+ TimerMap()[m_id] = this;
return true;
}
{
if ( m_id )
{
- ::KillTimer((HWND)m_hwnd, (UINT)m_id);
- m_hwnd = NULL;
+ ::KillTimer(NULL, m_id);
- wxTimerList.erase(m_id);
+ TimerMap().erase(m_id);
}
m_id = 0;
void wxProcessTimer(wxTimer& timer)
{
- // Avoid to process spurious timer events
- if ( timer.m_id == 0)
- return;
+ wxASSERT_MSG( timer.m_id != 0, _T("bogus timer id") );
if ( timer.IsOneShot() )
timer.Stop();
timer.Notify();
}
-void WINAPI wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD)
+void WINAPI
+wxTimerProc(HWND WXUNUSED(hwnd),
+ UINT WXUNUSED(msg),
+ UINT idTimer,
+ DWORD WXUNUSED(dwTime))
{
- wxTimerMap::iterator node = wxTimerList.find((long)idTimer);
+ wxTimerMap::iterator node = TimerMap().find((unsigned long)idTimer);
- wxASSERT_MSG( node != wxTimerList.end(), wxT("bogus timer id in wxTimerProc") );
+ wxCHECK_RET( node != TimerMap().end(), wxT("bogus timer id in wxTimerProc") );
wxProcessTimer(*(node->second));
}
projects / wxWidgets.git / blobdiff