/////////////////////////////////////////////////////////////////////////////
-// Name: msw/timer.cpp
+// Name: src/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
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "timer.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_TIMER
+#include "wx/msw/private/timer.h"
+
#ifndef WX_PRECOMP
- #include "wx/window.h"
#include "wx/list.h"
#include "wx/event.h"
#include "wx/app.h"
#include "wx/intl.h"
#include "wx/log.h"
+ #include "wx/hashmap.h"
+ #include "wx/module.h"
#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 );
+// define a hash containing all the timers: it is indexed by timer id and
+// contains the corresponding timer
+WX_DECLARE_HASH_MAP(WPARAM, wxMSWTimerImpl *, wxIntegerHash, wxIntegerEqual,
+ wxTimerMap);
-wxTimerMap wxTimerList;
+// 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;
-void WINAPI wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD);
+ return s_timerMap;
+}
+
+// This gets a unique, non-zero timer ID and creates an entry in the TimerMap
+UINT_PTR GetNewTimerId(wxMSWTimerImpl *t)
+{
+ static UINT_PTR lastTimerId = 0;
+
+ while (lastTimerId == 0 ||
+ TimerMap().find(lastTimerId) != TimerMap().end())
+ {
+ lastTimerId = lastTimerId + 1;
+ }
+
+ TimerMap()[lastTimerId] = t;
+
+ return lastTimerId;
+}
-// ----------------------------------------------------------------------------
-// macros
-// ----------------------------------------------------------------------------
-IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject)
// ----------------------------------------------------------------------------
-// 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;
+LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message,
+ WPARAM wParam, LPARAM lParam);
+
+// implemented in utils.cpp
+extern "C" WXDLLIMPEXP_BASE HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
+
// ----------------------------------------------------------------------------
-// private classes
+// wxTimerHiddenWindowModule: used to manage the hidden window used for
+// catching timer messages (we need a module to ensure that the window is
+// always deleted)
// ----------------------------------------------------------------------------
-class wxTimerModule : public wxModule
+class wxTimerHiddenWindowModule : 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)"));
- }
+ // module init/finalize
+ virtual bool OnInit();
+ virtual void OnExit();
- s_classnameTimerWnd = NULL;
- }
- }
+ // get the hidden window (creates on demand)
+ static HWND GetHWND();
private:
- DECLARE_DYNAMIC_CLASS(wxTimerModule)
+ // the HWND of the hidden window
+ static HWND ms_hwnd;
+
+ // the class used to create it
+ static const wxChar *ms_className;
+
+ DECLARE_DYNAMIC_CLASS(wxTimerHiddenWindowModule)
};
+IMPLEMENT_DYNAMIC_CLASS(wxTimerHiddenWindowModule, wxModule)
+
// ============================================================================
// implementation
// ============================================================================
+
// ----------------------------------------------------------------------------
-// wxTimer class
+// wxMSWTimerImpl class
// ----------------------------------------------------------------------------
-void wxTimer::Init()
+bool wxMSWTimerImpl::Start(int milliseconds, bool oneShot)
{
- m_id = 0;
- m_hwnd = NULL;
-}
+ if ( !wxTimerImpl::Start(milliseconds, oneShot) )
+ return false;
-wxTimer::~wxTimer()
-{
- // save id as Stop() changes it
- long id = m_id;
+ m_id = GetNewTimerId(this);
+ // SetTimer() normally returns just idTimer but this might change in the
+ // future so use its return value to be safe
+ UINT_PTR ret = ::SetTimer
+ (
+ wxTimerHiddenWindowModule::GetHWND(), // window for WM_TIMER
+ m_id, // timer ID to create
+ (UINT)m_milli, // delay
+ NULL // timer proc (unused)
+ );
+
+ if ( ret == 0 )
+ {
+ wxLogSysError(_("Couldn't create a timer"));
+
+ return false;
+ }
- wxTimer::Stop();
+ return true;
+}
- wxTimerList.erase(id);
+void wxMSWTimerImpl::Stop()
+{
+ ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id);
+ TimerMap().erase(m_id);
+ m_id = 0;
}
-bool wxTimer::Start(int milliseconds, bool oneShot)
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+void wxProcessTimer(wxMSWTimerImpl& timer)
{
- (void)wxTimerBase::Start(milliseconds, oneShot);
+ wxASSERT_MSG( timer.IsRunning(), wxT("bogus timer id") );
- wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeour") );
+ if ( timer.IsOneShot() )
+ timer.Stop();
+
+ timer.Notify();
+}
- // 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 )
+LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message,
+ WPARAM wParam, LPARAM lParam)
+{
+ if ( message == WM_TIMER )
{
- wxWindow *win = wxDynamicCast(m_owner, wxWindow);
- if ( win )
+ wxTimerMap::iterator node = TimerMap().find(wParam);
+
+ if ( node != TimerMap().end() )
{
- m_hwnd = win->GetHWND();
+ wxProcessTimer(*(node->second));
+
+ return 0;
}
+ //else: Unknown timer, probably one of our timers that had fired just
+ // before being removed from the timers map by Stop().
}
- // 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;
- }
- }
+ return ::DefWindowProc(hWnd, message, wParam, lParam);
+}
- m_hwnd = (WXHWND)s_hwndTimer;
+// ----------------------------------------------------------------------------
+// wxTimerHiddenWindowModule functions
+// ----------------------------------------------------------------------------
- }
- m_id = ::SetTimer
- (
- (HWND)m_hwnd,
- (UINT)(m_id ? m_id : 1),
- (UINT)m_milli,
- (TIMERPROC)wxTimerProc
- );
+HWND wxTimerHiddenWindowModule::ms_hwnd = NULL;
- if ( !m_id )
- {
- wxLogSysError(_("Couldn't create a timer"));
+const wxChar *wxTimerHiddenWindowModule::ms_className = NULL;
- return false;
- }
-
- wxTimerList[m_id] = this;
+bool wxTimerHiddenWindowModule::OnInit()
+{
+ // do not initialize ms_hwnd to ms_className to NULL here: it may happen
+ // that our GetHWND() is called before the modules are initialized if a
+ // timer is created from wxApp-derived class ctor and in this case we
+ // shouldn't overwrite it
return true;
}
-void wxTimer::Stop()
+void wxTimerHiddenWindowModule::OnExit()
{
- if ( m_id )
+ if ( ms_hwnd )
{
- ::KillTimer((HWND)m_hwnd, (UINT)m_id);
- m_hwnd = NULL;
+ if ( !::DestroyWindow(ms_hwnd) )
+ {
+ wxLogLastError(wxT("DestroyWindow(wxTimerHiddenWindow)"));
+ }
- wxTimerList.erase(m_id);
+ ms_hwnd = NULL;
}
- m_id = 0;
-}
-
-// ----------------------------------------------------------------------------
-// private functions
-// ----------------------------------------------------------------------------
-
-void wxProcessTimer(wxTimer& timer)
-{
- // Avoid to process spurious timer events
- if ( timer.m_id == 0)
- return;
-
- if ( timer.IsOneShot() )
- timer.Stop();
+ if ( ms_className )
+ {
+ if ( !::UnregisterClass(ms_className, wxGetInstance()) )
+ {
+ wxLogLastError(wxT("UnregisterClass(\"wxTimerHiddenWindow\")"));
+ }
- timer.Notify();
+ ms_className = NULL;
+ }
}
-void WINAPI wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD)
+/* static */
+HWND wxTimerHiddenWindowModule::GetHWND()
{
- wxTimerMap::iterator node = wxTimerList.find((long)idTimer);
-
- wxASSERT_MSG( node != wxTimerList.end(), wxT("bogus timer id in wxTimerProc") );
+ static const wxChar *HIDDEN_WINDOW_CLASS = wxT("wxTimerHiddenWindow");
+ if ( !ms_hwnd )
+ {
+ ms_hwnd = wxCreateHiddenWindow(&ms_className, HIDDEN_WINDOW_CLASS,
+ wxTimerWndProc);
+ }
- wxProcessTimer(*(node->second));
+ return ms_hwnd;
}
#endif // wxUSE_TIMER
-
projects / wxWidgets.git / blobdiff