X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/caa36aab8425422041c34b9cc573a2e0189db6ed..be10c7f969bb460dc79bd8946d59bf54c98ac660:/src/msw/timer.cpp diff --git a/src/msw/timer.cpp b/src/msw/timer.cpp index 1ebd9535cf..ba7ed1cd9c 100644 --- a/src/msw/timer.cpp +++ b/src/msw/timer.cpp @@ -1,18 +1,13 @@ ///////////////////////////////////////////////////////////////////////////// -// 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" @@ -22,208 +17,223 @@ #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); +#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; +// 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); // ---------------------------------------------------------------------------- -// 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; + // module init/finalize + virtual bool OnInit(); + virtual void OnExit(); - if ( !::UnregisterClass(wxMSWTIMER_WNDCLASSNAME, wxGetInstance()) ) - { - wxLogLastError(_T("UnregisterClass(wxTimerClass)")); - } - - 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) + ); - wxTimer::Stop(); + if ( ret == 0 ) + { + wxLogSysError(_("Couldn't create a timer")); + + return false; + } - wxTimerList.erase(id); + return true; } -bool wxTimer::Start(int milliseconds, bool oneShot) +void wxMSWTimerImpl::Stop() +{ + ::KillTimer(wxTimerHiddenWindowModule::GetHWND(), m_id); + TimerMap().erase(m_id); + m_id = 0; +} + +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- + +void wxProcessTimer(wxMSWTimerImpl& timer) { - (void)wxTimerBase::Start(milliseconds, oneShot); + wxASSERT_MSG( timer.IsRunning(), wxT("bogus timer id") ); + + if ( timer.IsOneShot() ) + timer.Stop(); - wxCHECK_MSG( m_milli > 0, false, wxT("invalid value for timer timeour") ); + 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 ) - { - m_hwnd = win->GetHWND(); - } - } + wxTimerMap::iterator node = TimerMap().find(wParam); - // if not, use a shared hidden window - if ( !m_hwnd ) - { - if ( !s_hwndTimer ) + if ( node != TimerMap().end() ) { - 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; - } + 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(). + } - m_hwnd = (WXHWND)s_hwndTimer; + return ::DefWindowProc(hWnd, message, wParam, lParam); +} - } +// ---------------------------------------------------------------------------- +// wxTimerHiddenWindowModule functions +// ---------------------------------------------------------------------------- - m_id = ::SetTimer - ( - (HWND)m_hwnd, - (UINT)(m_id ? m_id : 1), - (UINT)m_milli, - (TIMERPROC)wxTimerProc - ); - if ( !m_id ) - { - wxLogSysError(_("Couldn't create a timer")); +HWND wxTimerHiddenWindowModule::ms_hwnd = NULL; - return false; - } +const wxChar *wxTimerHiddenWindowModule::ms_className = NULL; - 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 -