X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c009bf3e9fdbbbe794c0670ff1b1f9f296c91c02..73799292cab3e8fa4873a5aecd2d312ad2fbf5e5:/src/msw/evtloop.cpp diff --git a/src/msw/evtloop.cpp b/src/msw/evtloop.cpp index c260f52ea2..0d57104c33 100644 --- a/src/msw/evtloop.cpp +++ b/src/msw/evtloop.cpp @@ -24,62 +24,138 @@ #pragma hdrstop #endif +#include "wx/evtloop.h" + #ifndef WX_PRECOMP - #include "wx/window.h" + #if wxUSE_GUI + #include "wx/window.h" + #endif #include "wx/app.h" + #include "wx/log.h" #endif //WX_PRECOMP -#include "wx/evtloop.h" - -#include "wx/tooltip.h" +#include "wx/thread.h" #include "wx/except.h" -#include "wx/ptr_scpd.h" - #include "wx/msw/private.h" +#include "wx/scopeguard.h" -#if wxUSE_THREADS - #include "wx/thread.h" +#if wxUSE_GUI + #include "wx/tooltip.h" + #if wxUSE_THREADS + // define the list of MSG strutures + WX_DECLARE_LIST(MSG, wxMsgList); - // define the list of MSG strutures - WX_DECLARE_LIST(MSG, wxMsgList); + #include "wx/listimpl.cpp" - #include "wx/listimpl.cpp" + WX_DEFINE_LIST(wxMsgList) + #endif // wxUSE_THREADS +#endif //wxUSE_GUI - WX_DEFINE_LIST(wxMsgList) -#endif // wxUSE_THREADS +#if wxUSE_BASE // ============================================================================ -// wxEventLoop implementation +// wxMSWEventLoopBase implementation // ============================================================================ -wxWindowMSW *wxEventLoop::ms_winCritical = NULL; - // ---------------------------------------------------------------------------- // ctor/dtor // ---------------------------------------------------------------------------- -wxEventLoop::wxEventLoop() +wxMSWEventLoopBase::wxMSWEventLoopBase() { m_shouldExit = false; m_exitcode = 0; } // ---------------------------------------------------------------------------- -// wxEventLoop message processing +// wxEventLoop message processing dispatching // ---------------------------------------------------------------------------- -void wxEventLoop::ProcessMessage(WXMSG *msg) +bool wxMSWEventLoopBase::Pending() const { - // give us the chance to preprocess the message first - if ( !PreProcessMessage(msg) ) + MSG msg; + return ::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE) != 0; +} + +bool wxMSWEventLoopBase::GetNextMessage(WXMSG* msg) +{ + const BOOL rc = ::GetMessage(msg, NULL, 0, 0); + + if ( rc == 0 ) { - // if it wasn't done, dispatch it to the corresponding window - ::TranslateMessage(msg); - ::DispatchMessage(msg); + // got WM_QUIT + return false; + } + + if ( rc == -1 ) + { + // should never happen, but let's test for it nevertheless + wxLogLastError(wxT("GetMessage")); + + // still break from the loop + return false; } + + return true; } -bool wxEventLoop::IsChildOfCriticalWindow(wxWindowMSW *win) +int wxMSWEventLoopBase::GetNextMessageTimeout(WXMSG *msg, unsigned long timeout) +{ + // MsgWaitForMultipleObjects() won't notice any input which was already + // examined (e.g. using PeekMessage()) but not yet removed from the queue + // so we need to remove any immediately messages manually + // + // NB: using MsgWaitForMultipleObjectsEx() could simplify the code here but + // it is not available in very old Windows versions + if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) ) + { + // we use this function just in order to not block longer than the + // given timeout, so we don't pass any handles to it at all + DWORD rc = ::MsgWaitForMultipleObjects + ( + 0, NULL, + FALSE, + timeout, + QS_ALLINPUT + ); + + switch ( rc ) + { + default: + wxLogDebug("unexpected MsgWaitForMultipleObjects() return " + "value %lu", rc); + // fall through + + case WAIT_TIMEOUT: + return -1; + + case WAIT_OBJECT_0: + if ( !::PeekMessage(msg, 0, 0, 0, PM_REMOVE) ) + { + // somehow it may happen that MsgWaitForMultipleObjects() + // returns true but there are no messages -- just treat it + // the same as timeout then + return -1; + } + break; + } + } + + return msg->message != WM_QUIT; +} + + +#endif // wxUSE_BASE + +#if wxUSE_GUI + +// ============================================================================ +// GUI wxEventLoop implementation +// ============================================================================ + +wxWindowMSW *wxGUIEventLoop::ms_winCritical = NULL; + +bool wxGUIEventLoop::IsChildOfCriticalWindow(wxWindowMSW *win) { while ( win ) { @@ -92,7 +168,7 @@ bool wxEventLoop::IsChildOfCriticalWindow(wxWindowMSW *win) return false; } -bool wxEventLoop::PreProcessMessage(WXMSG *msg) +bool wxGUIEventLoop::PreProcessMessage(WXMSG *msg) { HWND hwnd = msg->hwnd; wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd); @@ -172,16 +248,14 @@ bool wxEventLoop::PreProcessMessage(WXMSG *msg) // now try the other hooks (kbd navigation is handled here) for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) { - if (wnd != wndThis) // Skip the first since wndThis->MSWProcessMessage() was called above - { - if ( wnd->MSWProcessMessage((WXMSG *)msg) ) - return true; - } + if ( wnd->MSWProcessMessage((WXMSG *)msg) ) + return true; - // Stop at first top level window (as per comment above). - // If we don't do this, pressing ESC on a modal dialog shown as child of a modal - // dialog with wxID_CANCEL will cause the parent dialog to be closed, for example - if (wnd->IsTopLevel()) + // also stop at first top level window here, just as above because + // if we don't do this, pressing ESC on a modal dialog shown as child + // of a modal dialog with wxID_CANCEL will cause the parent dialog to + // be closed, for example + if ( wnd->IsTopLevel() ) break; } @@ -189,57 +263,22 @@ bool wxEventLoop::PreProcessMessage(WXMSG *msg) return false; } -// ---------------------------------------------------------------------------- -// wxEventLoop running and exiting -// ---------------------------------------------------------------------------- - -// ---------------------------------------------------------------------------- -// wxEventLoopManual customization -// ---------------------------------------------------------------------------- - -void wxEventLoop::OnNextIteration() +void wxGUIEventLoop::ProcessMessage(WXMSG *msg) { -#if wxUSE_THREADS - wxMutexGuiLeaveOrEnter(); -#endif // wxUSE_THREADS -} - -void wxEventLoop::WakeUp() -{ - ::PostMessage(NULL, WM_NULL, 0, 0); -} - -// ---------------------------------------------------------------------------- -// wxEventLoop message processing dispatching -// ---------------------------------------------------------------------------- - -bool wxEventLoop::Pending() const -{ - MSG msg; - return ::PeekMessage(&msg, 0, 0, 0, PM_NOREMOVE) != 0; + // give us the chance to preprocess the message first + if ( !PreProcessMessage(msg) ) + { + // if it wasn't done, dispatch it to the corresponding window + ::TranslateMessage(msg); + ::DispatchMessage(msg); + } } -bool wxEventLoop::Dispatch() +bool wxGUIEventLoop::Dispatch() { - wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") ); - MSG msg; - BOOL rc = ::GetMessage(&msg, (HWND) NULL, 0, 0); - - if ( rc == 0 ) - { - // got WM_QUIT - return false; - } - - if ( rc == -1 ) - { - // should never happen, but let's test for it nevertheless - wxLogLastError(wxT("GetMessage")); - - // still break from the loop + if ( !GetNextMessage(&msg) ) return false; - } #if wxUSE_THREADS wxASSERT_MSG( wxThread::IsMain(), @@ -296,3 +335,266 @@ bool wxEventLoop::Dispatch() return true; } +int wxGUIEventLoop::DispatchTimeout(unsigned long timeout) +{ + MSG msg; + int rc = GetNextMessageTimeout(&msg, timeout); + if ( rc != 1 ) + return rc; + + ProcessMessage(&msg); + + return 1; +} + +void wxGUIEventLoop::OnNextIteration() +{ +#if wxUSE_THREADS + wxMutexGuiLeaveOrEnter(); +#endif // wxUSE_THREADS +} + +void wxGUIEventLoop::WakeUp() +{ + ::PostMessage(NULL, WM_NULL, 0, 0); +} + + +// ---------------------------------------------------------------------------- +// Yield to incoming messages +// ---------------------------------------------------------------------------- + +#include +WX_DEFINE_OBJARRAY(wxMSGArray); + +bool wxGUIEventLoop::YieldFor(long eventsToProcess) +{ + // set the flag and don't forget to reset it before returning + m_isInsideYield = true; + m_eventsToProcessInsideYield = eventsToProcess; + + wxON_BLOCK_EXIT_SET(m_isInsideYield, false); + +#if wxUSE_LOG + // disable log flushing from here because a call to wxYield() shouldn't + // normally result in message boxes popping up &c + wxLog::Suspend(); + + // ensure the logs will be flashed again when we exit + wxON_BLOCK_EXIT0(wxLog::Resume); +#endif // wxUSE_LOG + + // we don't want to process WM_QUIT from here - it should be processed in + // the main event loop in order to stop it + MSG msg; + int nPaintsReceived = 0; + while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) && + msg.message != WM_QUIT ) + { +#if wxUSE_THREADS + wxMutexGuiLeaveOrEnter(); +#endif // wxUSE_THREADS + + if (msg.message == WM_PAINT) + { + // NOTE: WM_PAINTs are categorized as wxEVT_CATEGORY_UI + if ((eventsToProcess & wxEVT_CATEGORY_UI) == 0) + { + // this msg is not going to be dispatched... + // however WM_PAINT is special: until there are damaged + // windows, Windows will keep sending it forever! + if (nPaintsReceived > 10) + { + // we got 10 WM_PAINT consecutive messages... + // we must have reached the tail of the message queue: + // we're now getting _only_ WM_PAINT events and this will + // continue forever (since we don't dispatch them + // because of the user-specified eventsToProcess mask)... + // break out of this loop! + break; + } + else + nPaintsReceived++; + } + //else: we're going to dispatch it below, + // so we don't need to take any special action + } + else + { + // reset the counter of consecutive WM_PAINT messages received: + nPaintsReceived = 0; + } + + // choose a wxEventCategory for this Windows message + wxEventCategory cat; + switch (msg.message) + { + case WM_NCMOUSEMOVE: + case WM_NCLBUTTONDOWN: + case WM_NCLBUTTONUP: + case WM_NCLBUTTONDBLCLK: + case WM_NCRBUTTONDOWN: + case WM_NCRBUTTONUP: + case WM_NCRBUTTONDBLCLK: + case WM_NCMBUTTONDOWN: + case WM_NCMBUTTONUP: + case WM_NCMBUTTONDBLCLK: + + case WM_KEYDOWN: + case WM_KEYUP: + case WM_CHAR: + case WM_DEADCHAR: + case WM_SYSKEYDOWN: + case WM_SYSKEYUP: + case WM_SYSCHAR: + case WM_SYSDEADCHAR: +#ifdef WM_UNICHAR + case WM_UNICHAR: +#endif + case WM_HOTKEY: + case WM_IME_STARTCOMPOSITION: + case WM_IME_ENDCOMPOSITION: + case WM_IME_COMPOSITION: + case WM_COMMAND: + case WM_SYSCOMMAND: + + case WM_IME_SETCONTEXT: + case WM_IME_NOTIFY: + case WM_IME_CONTROL: + case WM_IME_COMPOSITIONFULL: + case WM_IME_SELECT: + case WM_IME_CHAR: + case WM_IME_KEYDOWN: + case WM_IME_KEYUP: + + case WM_MOUSEHOVER: +#ifdef WM_NCMOUSELEAVE + case WM_NCMOUSELEAVE: +#endif + case WM_MOUSELEAVE: + + case WM_CUT: + case WM_COPY: + case WM_PASTE: + case WM_CLEAR: + case WM_UNDO: + + case WM_MOUSEMOVE: + case WM_LBUTTONDOWN: + case WM_LBUTTONUP: + case WM_LBUTTONDBLCLK: + case WM_RBUTTONDOWN: + case WM_RBUTTONUP: + case WM_RBUTTONDBLCLK: + case WM_MBUTTONDOWN: + case WM_MBUTTONUP: + case WM_MBUTTONDBLCLK: + case WM_MOUSEWHEEL: + cat = wxEVT_CATEGORY_USER_INPUT; + break; + + case WM_TIMER: + cat = wxEVT_CATEGORY_TIMER; + break; + + default: + if (msg.message < WM_USER) + { + // 0;WM_USER-1 is the range of message IDs reserved for use + // by the system. + // there are too many of these types of messages to handle + // them in this switch + cat = wxEVT_CATEGORY_UI; + } + else + cat = wxEVT_CATEGORY_UNKNOWN; + } + + // should we process this event now? + if (cat & eventsToProcess) + { + if ( !wxTheApp->Dispatch() ) + break; + } + else + { + // remove the message and store it + ::GetMessage(&msg, NULL, 0, 0); + m_arrMSG.Add(msg); + } + } + + // if there are pending events, we must process them. + if (wxTheApp) + wxTheApp->ProcessPendingEvents(); + + // put back unprocessed events in the queue + DWORD id = GetCurrentThreadId(); + for (size_t i=0; imessage == WM_TIMER ) + { + TIMERPROC proc = (TIMERPROC)msg->lParam; + if ( proc ) + (*proc)(NULL, 0, msg->wParam, 0); + } + else + { + ::DispatchMessage(msg); + } +} + +bool wxConsoleEventLoop::Dispatch() +{ + MSG msg; + if ( !GetNextMessage(&msg) ) + return false; + + ProcessMessage(&msg); + + return !m_shouldExit; +} + +int wxConsoleEventLoop::DispatchTimeout(unsigned long timeout) +{ + MSG msg; + int rc = GetNextMessageTimeout(&msg, timeout); + if ( rc != 1 ) + return rc; + + ProcessMessage(&msg); + + return !m_shouldExit; +} + +#endif // wxUSE_CONSOLE_EVENTLOOP + +#endif //wxUSE_GUI