X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4676948b6814c97b93c431a8cbcd8c0352c87ba9..69d31e313035d5e22d9400ec946f6007f710910c:/src/msw/timer.cpp diff --git a/src/msw/timer.cpp b/src/msw/timer.cpp index 3781b06f2b..0db65998b1 100644 --- a/src/msw/timer.cpp +++ b/src/msw/timer.cpp @@ -1,18 +1,14 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: 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 ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ - #pragma implementation "timer.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -22,113 +18,137 @@ #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/timer.h" - #include "wx/msw/private.h" // ---------------------------------------------------------------------------- -// 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 _EXPORT wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD); + return s_timerMap; +} // ---------------------------------------------------------------------------- -// macros +// private functions // ---------------------------------------------------------------------------- -#ifdef __WIN32__ - #define _EXPORT -#else - #define _EXPORT _export -#endif +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam); -// should probably be in wx/msw/private.h -#ifdef __WXMICROWIN__ - #define MakeProcInstance(proc, hinst) proc -#endif - -IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject) +// implemented in utils.cpp +extern "C" WXDLLIMPEXP_BASE HWND +wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc); -// ============================================================================ -// implementation -// ============================================================================ // ---------------------------------------------------------------------------- -// wxTimer class +// wxTimerHiddenWindowModule: used to manage the hidden window used for +// catching timer messages (we need a module to ensure that the window is +// always deleted) // ---------------------------------------------------------------------------- -void wxTimer::Init() +class wxTimerHiddenWindowModule : public wxModule { - m_id = 0; -} +public: + // module init/finalize + virtual bool OnInit(); + virtual void OnExit(); -wxTimer::~wxTimer() -{ - long id = m_id; + // get the hidden window (creates on demand) + static HWND GetHWND(); - wxTimer::Stop(); +private: + // the HWND of the hidden window + static HWND ms_hwnd; - wxTimerList.erase(id); -} + // the class used to create it + static const wxChar *ms_className; -bool wxTimer::Start(int milliseconds, bool oneShot) -{ - (void)wxTimerBase::Start(milliseconds, oneShot); + DECLARE_DYNAMIC_CLASS(wxTimerHiddenWindowModule) +}; - wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeour") ); +IMPLEMENT_DYNAMIC_CLASS(wxTimerHiddenWindowModule, wxModule) -#ifdef __WXWINCE__ - m_id = ::SetTimer(NULL, (UINT)(m_id ? m_id : 1), - (UINT)m_milli, (void (__stdcall *)(struct HWND__ *,unsigned int,unsigned int,unsigned long)) wxTimerProc); -#else - TIMERPROC wxTimerProcInst = (TIMERPROC) - MakeProcInstance((FARPROC)wxTimerProc, wxGetInstance()); +// ============================================================================ +// implementation +// ============================================================================ - m_id = ::SetTimer(NULL, (UINT)(m_id ? m_id : 1), - (UINT)m_milli, wxTimerProcInst); -#endif - if ( m_id > 0 ) +// ---------------------------------------------------------------------------- +// wxMSWTimerImpl class +// ---------------------------------------------------------------------------- + +bool wxMSWTimerImpl::Start(int milliseconds, bool oneShot) +{ + if ( !wxTimerImpl::Start(milliseconds, oneShot) ) + return false; + + m_id = ::SetTimer( + wxTimerHiddenWindowModule::GetHWND(), // window to send the messages to + GetId(), // timer ID + (UINT)m_milli, // delay + NULL // timer proc. Not used since we pass hwnd + ); + + if ( !m_id ) { - wxTimerList[m_id] = this; + wxLogSysError(_("Couldn't create a timer")); - return true; + return false; } - else + + // 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 + // + // notice that this also happens if the same id is reused for multiple + // timers: this used to work in previous versions but was never supported + // and absolutely shouldn't be done, use wxID_ANY to assign an id to the + // timer automatically or ensure that all your timers have unique ids + if ( TimerMap().find(m_id) != TimerMap().end() ) { - wxLogSysError(_("Couldn't create a timer")); + wxLogError(_("Timer creation failed.")); + + ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id); + m_id = 0; return false; } + + TimerMap()[m_id] = this; + + return true; } -void wxTimer::Stop() +void wxMSWTimerImpl::Stop() { - if ( m_id ) - { - ::KillTimer(NULL, (UINT)m_id); + wxASSERT_MSG( m_id, wxT("should be running") ); - wxTimerList.erase(m_id); - } + ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id); + + TimerMap().erase(m_id); m_id = 0; } @@ -137,11 +157,9 @@ void wxTimer::Stop() // private functions // ---------------------------------------------------------------------------- -void wxProcessTimer(wxTimer& timer) +void wxProcessTimer(wxMSWTimerImpl& timer) { - // Avoid to process spurious timer events - if ( timer.m_id == 0) - return; + wxASSERT_MSG( timer.IsRunning(), wxT("bogus timer id") ); if ( timer.IsOneShot() ) timer.Stop(); @@ -149,16 +167,78 @@ void wxProcessTimer(wxTimer& timer) timer.Notify(); } -void WINAPI _EXPORT wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD) + +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam) +{ + if ( message == WM_TIMER ) + { + wxTimerMap::iterator node = TimerMap().find(wParam); + + wxCHECK_MSG( node != TimerMap().end(), 0, wxT("bogus timer id in wxTimerProc") ); + + wxProcessTimer(*(node->second)); + } + else + { + return ::DefWindowProc(hWnd, message, wParam, lParam); + } + return 0; +} + +// ---------------------------------------------------------------------------- +// wxTimerHiddenWindowModule functions +// ---------------------------------------------------------------------------- + + +HWND wxTimerHiddenWindowModule::ms_hwnd = NULL; + +const wxChar *wxTimerHiddenWindowModule::ms_className = NULL; + +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 wxTimerHiddenWindowModule::OnExit() { - - wxTimerMap::iterator node = wxTimerList.find((long)idTimer); + if ( ms_hwnd ) + { + if ( !::DestroyWindow(ms_hwnd) ) + { + wxLogLastError(wxT("DestroyWindow(wxTimerHiddenWindow)")); + } - wxASSERT_MSG( node != wxTimerList.end(), wxT("bogus timer id in wxTimerProc") ); + ms_hwnd = NULL; + } + + if ( ms_className ) + { + if ( !::UnregisterClass(ms_className, wxGetInstance()) ) + { + wxLogLastError(wxT("UnregisterClass(\"wxTimerHiddenWindow\")")); + } - wxProcessTimer(*(node->second)); + 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); + } - // return 0; + return ms_hwnd; } #endif // wxUSE_TIMER