b46b1d59d6
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@46029 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
368 lines
11 KiB
C++
368 lines
11 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: src/os2/evtloop.cpp
|
|
// Purpose: implements wxGUIEventLoop for PM
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 01.06.01
|
|
// RCS-ID: $Id$
|
|
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
|
|
// License: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// ============================================================================
|
|
// declarations
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// headers
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// For compilers that support precompilation, includes "wx.h".
|
|
#include "wx/wxprec.h"
|
|
|
|
#ifdef __BORLANDC__
|
|
#pragma hdrstop
|
|
#endif
|
|
|
|
#ifndef WX_PRECOMP
|
|
#include "wx/window.h"
|
|
#include "wx/app.h"
|
|
#include "wx/timer.h"
|
|
#include "wx/log.h"
|
|
#endif //WX_PRECOMP
|
|
|
|
#include "wx/evtloop.h"
|
|
#include "wx/tooltip.h"
|
|
#include "wx/ptr_scpd.h"
|
|
|
|
#include "wx/os2/private.h"
|
|
#include "wx/os2/private/timer.h" // for wxTimerProc
|
|
|
|
#if wxUSE_THREADS
|
|
// define the array of QMSG strutures
|
|
WX_DECLARE_OBJARRAY(QMSG, wxMsgArray);
|
|
|
|
#include "wx/arrimpl.cpp"
|
|
|
|
WX_DEFINE_OBJARRAY(wxMsgArray);
|
|
#endif
|
|
|
|
extern HAB vHabmain;
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxEventLoopImpl
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxEventLoopImpl
|
|
{
|
|
public:
|
|
// ctor
|
|
wxEventLoopImpl() { SetExitCode(0); }
|
|
|
|
// process a message
|
|
void ProcessMessage(QMSG *msg);
|
|
|
|
// generate an idle message, return TRUE if more idle time requested
|
|
bool SendIdleMessage();
|
|
|
|
// set/get the exit code
|
|
void SetExitCode(int exitcode) { m_exitcode = exitcode; }
|
|
int GetExitCode() const { return m_exitcode; }
|
|
|
|
private:
|
|
// preprocess a message, return TRUE if processed (i.e. no further
|
|
// dispatching required)
|
|
bool PreProcessMessage(QMSG *msg);
|
|
|
|
// the exit code of the event loop
|
|
int m_exitcode;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// helper class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
wxDEFINE_TIED_SCOPED_PTR_TYPE(wxEventLoopImpl);
|
|
|
|
// ============================================================================
|
|
// wxEventLoopImpl implementation
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxEventLoopImpl message processing
|
|
// ----------------------------------------------------------------------------
|
|
|
|
void wxEventLoopImpl::ProcessMessage(QMSG *msg)
|
|
{
|
|
// give us the chance to preprocess the message first
|
|
if ( !PreProcessMessage(msg) )
|
|
{
|
|
// if it wasn't done, dispatch it to the corresponding window
|
|
::WinDispatchMsg(vHabmain, msg);
|
|
}
|
|
}
|
|
|
|
bool wxEventLoopImpl::PreProcessMessage(QMSG *pMsg)
|
|
{
|
|
HWND hWnd = pMsg->hwnd;
|
|
wxWindow *pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
|
|
wxWindow *pWnd;
|
|
|
|
//
|
|
// Pass non-system timer messages to the wxTimerProc
|
|
//
|
|
if (pMsg->msg == WM_TIMER &&
|
|
(SHORT1FROMMP(pMsg->mp1) != TID_CURSOR &&
|
|
SHORT1FROMMP(pMsg->mp1) != TID_FLASHWINDOW &&
|
|
SHORT1FROMMP(pMsg->mp1) != TID_SCROLL &&
|
|
SHORT1FROMMP(pMsg->mp1) != 0x0000
|
|
))
|
|
wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
|
|
|
|
// Allow the window to prevent certain messages from being
|
|
// translated/processed (this is currently used by wxTextCtrl to always
|
|
// grab Ctrl-C/V/X, even if they are also accelerators in some parent)
|
|
//
|
|
if (pWndThis && !pWndThis->OS2ShouldPreProcessMessage((WXMSG*)pMsg))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
//
|
|
// For some composite controls (like a combobox), wndThis might be NULL
|
|
// because the subcontrol is not a wxWindow, but only the control itself
|
|
// is - try to catch this case
|
|
//
|
|
while (hWnd && !pWndThis)
|
|
{
|
|
hWnd = ::WinQueryWindow(hWnd, QW_PARENT);
|
|
pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
|
|
}
|
|
|
|
|
|
//
|
|
// Try translations first; find the youngest window with
|
|
// a translation table. OS/2 has case sensiive accels, so
|
|
// this block, coded by BK, removes that and helps make them
|
|
// case insensitive.
|
|
//
|
|
if(pMsg->msg == WM_CHAR)
|
|
{
|
|
PBYTE pChmsg = (PBYTE)&(pMsg->msg);
|
|
USHORT uSch = CHARMSG(pChmsg)->chr;
|
|
bool bRc = FALSE;
|
|
|
|
//
|
|
// Do not process keyup events
|
|
//
|
|
if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
|
|
{
|
|
if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
|
|
CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
|
|
|
|
|
|
for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
|
|
{
|
|
if((bRc = pWnd->OS2TranslateMessage((WXMSG*)pMsg)) == TRUE)
|
|
break;
|
|
// stop at first top level window, i.e. don't try to process the
|
|
// key strokes originating in a dialog using the accelerators of
|
|
// the parent frame - this doesn't make much sense
|
|
if ( pWnd->IsTopLevel() )
|
|
break;
|
|
}
|
|
|
|
if(!bRc) // untranslated, should restore original value
|
|
CHARMSG(pChmsg)->chr = uSch;
|
|
}
|
|
}
|
|
//
|
|
// Anyone for a non-translation message? Try youngest descendants first.
|
|
//
|
|
// for (pWnd = pWndThis->GetParent(); pWnd; pWnd = pWnd->GetParent())
|
|
// {
|
|
// if (pWnd->OS2ProcessMessage(pWxmsg))
|
|
// return TRUE;
|
|
// }
|
|
return FALSE;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxEventLoopImpl idle event processing
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool wxEventLoopImpl::SendIdleMessage()
|
|
{
|
|
return wxTheApp->ProcessIdle() ;
|
|
}
|
|
|
|
// ============================================================================
|
|
// wxGUIEventLoop implementation
|
|
// ============================================================================
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxGUIEventLoop running and exiting
|
|
// ----------------------------------------------------------------------------
|
|
|
|
wxGUIEventLoop::~wxGUIEventLoop()
|
|
{
|
|
wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Keep trying to process messages until WM_QUIT
|
|
// received.
|
|
//
|
|
// If there are messages to be processed, they will all be
|
|
// processed and OnIdle will not be called.
|
|
// When there are no more messages, OnIdle is called.
|
|
// If OnIdle requests more time,
|
|
// it will be repeatedly called so long as there are no pending messages.
|
|
// A 'feature' of this is that once OnIdle has decided that no more processing
|
|
// is required, then it won't get processing time until further messages
|
|
// are processed (it'll sit in Dispatch).
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
class CallEventLoopMethod
|
|
{
|
|
public:
|
|
typedef void (wxGUIEventLoop::*FuncType)();
|
|
|
|
CallEventLoopMethod(wxGUIEventLoop *evtLoop, FuncType fn)
|
|
: m_evtLoop(evtLoop), m_fn(fn) { }
|
|
~CallEventLoopMethod() { (m_evtLoop->*m_fn)(); }
|
|
|
|
private:
|
|
wxGUIEventLoop *m_evtLoop;
|
|
FuncType m_fn;
|
|
};
|
|
|
|
int wxGUIEventLoop::Run()
|
|
{
|
|
// event loops are not recursive, you need to create another loop!
|
|
wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
|
|
|
|
// SendIdleMessage() and Dispatch() below may throw so the code here should
|
|
// be exception-safe, hence we must use local objects for all actions we
|
|
// should undo
|
|
wxEventLoopActivator activate(this);
|
|
wxEventLoopImplTiedPtr impl(&m_impl, new wxEventLoopImpl);
|
|
|
|
CallEventLoopMethod callOnExit(this, &wxGUIEventLoop::OnExit);
|
|
|
|
for ( ;; )
|
|
{
|
|
#if wxUSE_THREADS
|
|
wxMutexGuiLeaveOrEnter();
|
|
#endif // wxUSE_THREADS
|
|
|
|
// generate and process idle events for as long as we don't have
|
|
// anything else to do
|
|
while ( !Pending() && m_impl->SendIdleMessage() )
|
|
{
|
|
wxTheApp->HandleSockets();
|
|
wxMilliSleep(10);
|
|
}
|
|
|
|
wxTheApp->HandleSockets();
|
|
if (Pending())
|
|
{
|
|
if ( !Dispatch() )
|
|
{
|
|
// we got WM_QUIT
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
wxMilliSleep(10);
|
|
}
|
|
|
|
OnExit();
|
|
|
|
return m_impl->GetExitCode();
|
|
}
|
|
|
|
void wxGUIEventLoop::Exit(int rc)
|
|
{
|
|
wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
|
|
|
|
m_impl->SetExitCode(rc);
|
|
|
|
::WinPostMsg(NULL, WM_QUIT, 0, 0);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxGUIEventLoop message processing dispatching
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool wxGUIEventLoop::Pending() const
|
|
{
|
|
QMSG msg;
|
|
return ::WinPeekMsg(vHabmain, &msg, 0, 0, 0, PM_NOREMOVE) != 0;
|
|
}
|
|
|
|
bool wxGUIEventLoop::Dispatch()
|
|
{
|
|
wxCHECK_MSG( IsRunning(), false, _T("can't call Dispatch() if not running") );
|
|
|
|
QMSG msg;
|
|
BOOL bRc = ::WinGetMsg(vHabmain, &msg, (HWND) NULL, 0, 0);
|
|
|
|
if ( bRc == 0 )
|
|
{
|
|
// got WM_QUIT
|
|
return false;
|
|
}
|
|
|
|
#if wxUSE_THREADS
|
|
wxASSERT_MSG( wxThread::IsMain(),
|
|
wxT("only the main thread can process Windows messages") );
|
|
|
|
static bool s_hadGuiLock = true;
|
|
static wxMsgArray s_aSavedMessages;
|
|
|
|
// if a secondary thread owning the mutex is doing GUI calls, save all
|
|
// messages for later processing - we can't process them right now because
|
|
// it will lead to recursive library calls (and we're not reentrant)
|
|
if ( !wxGuiOwnedByMainThread() )
|
|
{
|
|
s_hadGuiLock = false;
|
|
|
|
// leave out WM_COMMAND messages: too dangerous, sometimes
|
|
// the message will be processed twice
|
|
if ( !wxIsWaitingForThread() || msg.msg != WM_COMMAND )
|
|
{
|
|
s_aSavedMessages.Add(msg);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
// have we just regained the GUI lock? if so, post all of the saved
|
|
// messages
|
|
//
|
|
// FIXME of course, it's not _exactly_ the same as processing the
|
|
// messages normally - expect some things to break...
|
|
if ( !s_hadGuiLock )
|
|
{
|
|
s_hadGuiLock = true;
|
|
|
|
size_t count = s_aSavedMessages.Count();
|
|
for ( size_t n = 0; n < count; n++ )
|
|
{
|
|
QMSG& msg = s_aSavedMessages[n];
|
|
m_impl->ProcessMessage(&msg);
|
|
}
|
|
|
|
s_aSavedMessages.Empty();
|
|
}
|
|
}
|
|
#endif // wxUSE_THREADS
|
|
|
|
m_impl->ProcessMessage(&msg);
|
|
|
|
return true;
|
|
}
|