X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c2ca375c5620209d77a88d2d378bdcdedbc82e7e..be10c7f969bb460dc79bd8946d59bf54c98ac660:/src/msw/timer.cpp?ds=sidebyside diff --git a/src/msw/timer.cpp b/src/msw/timer.cpp index 9027958705..ba7ed1cd9c 100644 --- a/src/msw/timer.cpp +++ b/src/msw/timer.cpp @@ -4,7 +4,6 @@ // Author: Julian Smart // 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 ///////////////////////////////////////////////////////////////////////////// @@ -27,9 +26,11 @@ #include "wx/intl.h" #include "wx/log.h" #include "wx/hashmap.h" + #include "wx/module.h" #endif #include "wx/msw/private.h" +#include "wx/msw/private/hiddenwin.h" // ---------------------------------------------------------------------------- // private globals @@ -37,7 +38,7 @@ // define a hash containing all the timers: it is indexed by timer id and // contains the corresponding timer -WX_DECLARE_HASH_MAP(unsigned long, wxMSWTimerImpl *, wxIntegerHash, wxIntegerEqual, +WX_DECLARE_HASH_MAP(WPARAM, wxMSWTimerImpl *, wxIntegerHash, wxIntegerEqual, wxTimerMap); // instead of using a global here, wrap it in a static function as otherwise it @@ -50,17 +51,64 @@ static wxTimerMap& TimerMap() 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; +} + + + // ---------------------------------------------------------------------------- // private functions // ---------------------------------------------------------------------------- -// timer callback used for all timers -void WINAPI wxTimerProc(HWND hwnd, UINT msg, UINT_PTR idTimer, DWORD dwTime); +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam); + +// ---------------------------------------------------------------------------- +// 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 wxTimerHiddenWindowModule : public wxModule +{ +public: + // module init/finalize + virtual bool OnInit(); + virtual void OnExit(); + + // get the hidden window (creates on demand) + static HWND GetHWND(); + +private: + // 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 // ============================================================================ + // ---------------------------------------------------------------------------- // wxMSWTimerImpl class // ---------------------------------------------------------------------------- @@ -70,47 +118,31 @@ bool wxMSWTimerImpl::Start(int milliseconds, bool oneShot) if ( !wxTimerImpl::Start(milliseconds, oneShot) ) return false; - m_id = ::SetTimer + 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 ( - NULL, // don't use window - 1, // id ignored with NULL hwnd anyhow - (UINT)m_milli, // delay - wxTimerProc // timer proc to call + wxTimerHiddenWindowModule::GetHWND(), // window for WM_TIMER + m_id, // timer ID to create + (UINT)m_milli, // delay + NULL // timer proc (unused) ); - if ( !m_id ) + if ( ret == 0 ) { wxLogSysError(_("Couldn't create a timer")); return false; } - // 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; } void wxMSWTimerImpl::Stop() { - wxASSERT_MSG( m_id, _T("should be running") ); - - ::KillTimer(NULL, m_id); - + ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id); TimerMap().erase(m_id); - m_id = 0; } @@ -120,7 +152,7 @@ void wxMSWTimerImpl::Stop() void wxProcessTimer(wxMSWTimerImpl& timer) { - wxASSERT_MSG( timer.IsRunning(), _T("bogus timer id") ); + wxASSERT_MSG( timer.IsRunning(), wxT("bogus timer id") ); if ( timer.IsOneShot() ) timer.Stop(); @@ -128,17 +160,80 @@ void wxProcessTimer(wxMSWTimerImpl& timer) timer.Notify(); } -void WINAPI -wxTimerProc(HWND WXUNUSED(hwnd), - UINT WXUNUSED(msg), - UINT_PTR idTimer, - DWORD WXUNUSED(dwTime)) + +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam) +{ + if ( message == WM_TIMER ) + { + wxTimerMap::iterator node = TimerMap().find(wParam); + + if ( node != TimerMap().end() ) + { + 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(). + } + + return ::DefWindowProc(hWnd, message, wParam, lParam); +} + +// ---------------------------------------------------------------------------- +// wxTimerHiddenWindowModule functions +// ---------------------------------------------------------------------------- + + +HWND wxTimerHiddenWindowModule::ms_hwnd = NULL; + +const wxChar *wxTimerHiddenWindowModule::ms_className = NULL; + +bool wxTimerHiddenWindowModule::OnInit() { - wxTimerMap::iterator node = TimerMap().find((unsigned long)idTimer); + // 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 - wxCHECK_RET( node != TimerMap().end(), wxT("bogus timer id in wxTimerProc") ); + return true; +} + +void wxTimerHiddenWindowModule::OnExit() +{ + if ( ms_hwnd ) + { + if ( !::DestroyWindow(ms_hwnd) ) + { + wxLogLastError(wxT("DestroyWindow(wxTimerHiddenWindow)")); + } + + ms_hwnd = NULL; + } + + if ( ms_className ) + { + if ( !::UnregisterClass(ms_className, wxGetInstance()) ) + { + wxLogLastError(wxT("UnregisterClass(\"wxTimerHiddenWindow\")")); + } + + ms_className = NULL; + } +} + +/* static */ +HWND wxTimerHiddenWindowModule::GetHWND() +{ + 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