X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dcc970aff858d6145b0d080509a63f327d713c93..404b319a85dadd7decf7a5a5331020520031a41c:/src/msw/timer.cpp?ds=sidebyside diff --git a/src/msw/timer.cpp b/src/msw/timer.cpp index 14c53817f0..21f40cfb03 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" @@ -22,108 +18,132 @@ #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" +#include "wx/msw/private/hiddenwin.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; -UINT WINAPI _EXPORT wxTimerProc(HWND hwnd, WORD, int idTimer, DWORD); +// 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; -// ---------------------------------------------------------------------------- -// macros -// ---------------------------------------------------------------------------- + return s_timerMap; +} -#ifdef __WIN32__ - #define _EXPORT -#else - #define _EXPORT _export -#endif +// 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; -// should probably be in wx/msw/private.h -#ifdef __WXMICROWIN__ - #define MakeProcInstance(proc, hinst) proc -#endif + while (lastTimerId == 0 || + TimerMap().find(lastTimerId) != TimerMap().end()) + { + lastTimerId = lastTimerId + 1; + } + + TimerMap()[lastTimerId] = t; + + return lastTimerId; +} -IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxObject) -// ============================================================================ -// implementation -// ============================================================================ // ---------------------------------------------------------------------------- -// wxTimer class +// private functions // ---------------------------------------------------------------------------- -void wxTimer::Init() -{ - m_id = 0; -} +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam); -wxTimer::~wxTimer() +// ---------------------------------------------------------------------------- +// 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 { - long id = m_id; +public: + // module init/finalize + virtual bool OnInit(); + virtual void OnExit(); - wxTimer::Stop(); + // get the hidden window (creates on demand) + static HWND GetHWND(); - wxTimerList.erase(id); -} +private: + // the HWND of the hidden window + static HWND ms_hwnd; -bool wxTimer::Start(int milliseconds, bool oneShot) -{ - (void)wxTimerBase::Start(milliseconds, oneShot); + // the class used to create it + static const wxChar *ms_className; - wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeour") ); + DECLARE_DYNAMIC_CLASS(wxTimerHiddenWindowModule) +}; - TIMERPROC wxTimerProcInst = (TIMERPROC) - MakeProcInstance((FARPROC)wxTimerProc, wxGetInstance()); +IMPLEMENT_DYNAMIC_CLASS(wxTimerHiddenWindowModule, wxModule) - m_id = ::SetTimer(NULL, (UINT)(m_id ? m_id : 1), - (UINT)m_milli, wxTimerProcInst); +// ============================================================================ +// implementation +// ============================================================================ - if ( m_id > 0 ) - { - wxTimerList[m_id] = this; - return true; - } - else +// ---------------------------------------------------------------------------- +// wxMSWTimerImpl class +// ---------------------------------------------------------------------------- + +bool wxMSWTimerImpl::Start(int milliseconds, bool oneShot) +{ + if ( !wxTimerImpl::Start(milliseconds, oneShot) ) + return false; + + 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; } + + return true; } -void wxTimer::Stop() +void wxMSWTimerImpl::Stop() { - if ( m_id ) - { - ::KillTimer(NULL, (UINT)m_id); - - wxTimerList.erase(m_id); - } - + ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id); + TimerMap().erase(m_id); m_id = 0; } @@ -131,11 +151,9 @@ 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(); @@ -143,17 +161,80 @@ void wxProcessTimer(wxTimer& timer) timer.Notify(); } -UINT WINAPI _EXPORT wxTimerProc(HWND WXUNUSED(hwnd), WORD, int idTimer, DWORD) + +LRESULT APIENTRY _EXPORT wxTimerWndProc(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam) { - - wxTimerMap::iterator node = wxTimerList.find((long)idTimer); + 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 +// ---------------------------------------------------------------------------- + - wxCHECK_MSG( node != wxTimerList.end(), 0, - wxT("bogus timer id in wxTimerProc") ); +HWND wxTimerHiddenWindowModule::ms_hwnd = NULL; - wxProcessTimer(*(node->second)); +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() +{ + 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); + } - return 0; + return ms_hwnd; } #endif // wxUSE_TIMER