src/motif/app.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        app.cpp
// Purpose:     wxApp
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
    #pragma implementation "app.h"
#endif

#include "wx/frame.h"
#include "wx/app.h"
#include "wx/utils.h"
#include "wx/gdicmn.h"
#include "wx/pen.h"
#include "wx/brush.h"
#include "wx/cursor.h"
#include "wx/icon.h"
#include "wx/palette.h"
#include "wx/dc.h"
#include "wx/dialog.h"
#include "wx/msgdlg.h"
#include "wx/log.h"
#include "wx/module.h"
#include "wx/memory.h"
#include "wx/log.h"
#include "wx/intl.h"

#if wxUSE_THREADS
    #include "wx/thread.h"
#endif

#if wxUSE_WX_RESOURCES
    #include "wx/resource.h"
#endif

#ifdef __VMS__
#pragma message disable nosimpint
#endif
#include <Xm/Xm.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xresource.h>
#include <X11/Xatom.h>
#ifdef __VMS__
#pragma message enable nosimpint
#endif

#include "wx/motif/private.h"

#include <string.h>

extern char *wxBuffer;
extern wxList wxPendingDelete;

wxApp *wxTheApp = NULL;

wxHashTable *wxWidgetHashTable = NULL;

IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)

BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
    EVT_IDLE(wxApp::OnIdle)
END_EVENT_TABLE()

#ifdef __WXDEBUG__
    typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);

    XErrorHandlerFunc gs_pfnXErrorHandler = 0;

    static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
    {
        // just forward to the default handler for now
        return gs_pfnXErrorHandler(dpy, xevent);
    }
#endif // __WXDEBUG__

long wxApp::sm_lastMessageTime = 0;

bool wxApp::Initialize()
{
    wxBuffer = new char[BUFSIZ + 512];

    wxClassInfo::InitializeClasses();

    // GL: I'm annoyed ... I don't know where to put this and I don't want to
    // create a module for that as it's part of the core.
#if wxUSE_THREADS
    wxPendingEventsLocker = new wxCriticalSection();
#endif

    wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
    wxTheColourDatabase->Initialize();

    wxInitializeStockLists();
    wxInitializeStockObjects();

#if wxUSE_WX_RESOURCES
    wxInitializeResourceSystem();
#endif

    // For PostScript printing
#if wxUSE_POSTSCRIPT
    /* Done using wxModule now
    wxInitializePrintSetupData();
    wxThePrintPaperDatabase = new wxPrintPaperDatabase;
    wxThePrintPaperDatabase->CreateDatabase();
    */
#endif

    wxBitmap::InitStandardHandlers();

    wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);

    wxModule::RegisterModules();
    if (!wxModule::InitializeModules()) return FALSE;

    return TRUE;
}

void wxApp::CleanUp()
{
    delete wxWidgetHashTable;
    wxWidgetHashTable = NULL;

    wxModule::CleanUpModules();

#if wxUSE_WX_RESOURCES
    wxCleanUpResourceSystem();
#endif

    wxDeleteStockObjects() ;

    // Destroy all GDI lists, etc.

    delete wxTheBrushList;
    wxTheBrushList = NULL;

    delete wxThePenList;
    wxThePenList = NULL;

    delete wxTheFontList;
    wxTheFontList = NULL;

    delete wxTheBitmapList;
    wxTheBitmapList = NULL;

    delete wxTheColourDatabase;
    wxTheColourDatabase = NULL;

#if wxUSE_POSTSCRIPT
    /* Done using wxModule now
    wxInitializePrintSetupData(FALSE);
    delete wxThePrintPaperDatabase;
    wxThePrintPaperDatabase = NULL;
    */
#endif

    wxBitmap::CleanUpHandlers();

    delete[] wxBuffer;
    wxBuffer = NULL;

    wxClassInfo::CleanUpClasses();

    delete wxTheApp;
    wxTheApp = NULL;

    // GL: I'm annoyed ... I don't know where to put this and I don't want to
    // create a module for that as it's part of the core.
#if wxUSE_THREADS
    delete wxPendingEvents;
    delete wxPendingEventsLocker;
#endif

#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
    // At this point we want to check if there are any memory
    // blocks that aren't part of the wxDebugContext itself,
    // as a special case. Then when dumping we need to ignore
    // wxDebugContext, too.
    if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
    {
        wxLogDebug("There were memory leaks.\n");
        wxDebugContext::Dump();
        wxDebugContext::PrintStatistics();
    }
#endif

    // do it as the very last thing because everything else can log messages
    wxLog::DontCreateOnDemand();
    // do it as the very last thing because everything else can log messages
    delete wxLog::SetActiveTarget(NULL);
}

int wxEntry( int argc, char *argv[] )
{
#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
    // This seems to be necessary since there are 'rogue'
    // objects present at this point (perhaps global objects?)
    // Setting a checkpoint will ignore them as far as the
    // memory checking facility is concerned.
    // Of course you may argue that memory allocated in globals should be
    // checked, but this is a reasonable compromise.
    wxDebugContext::SetCheckpoint();
#endif

    if (!wxApp::Initialize())
        return FALSE;

    if (!wxTheApp)
    {
        if (!wxApp::GetInitializerFunction())
        {
            printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
            return 0;
        };

        wxTheApp = (wxApp*) (* wxApp::GetInitializerFunction()) ();
    };

    if (!wxTheApp)
    {
        printf( "wxWindows error: wxTheApp == NULL\n" );
        return 0;
    };

    wxTheApp->SetClassName(wxFileNameFromPath(argv[0]));
    wxTheApp->SetAppName(wxFileNameFromPath(argv[0]));

    wxTheApp->argc = argc;
    wxTheApp->argv = argv;

    // GUI-specific initialization, such as creating an app context.
    wxTheApp->OnInitGui();

    // Here frames insert themselves automatically into wxTopLevelWindows by
    // getting created in OnInit().

    int retValue = 0;
    if (wxTheApp->OnInit())
    {
        if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
    }

    // flush the logged messages if any
    wxLog *pLog = wxLog::GetActiveTarget();
    if ( pLog != NULL && pLog->HasPendingMessages() )
        pLog->Flush();

    delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
    // for further messages

    if (wxTheApp->GetTopWindow())
    {
        delete wxTheApp->GetTopWindow();
        wxTheApp->SetTopWindow(NULL);
    }

    wxTheApp->DeletePendingObjects();

    wxTheApp->OnExit();

    wxApp::CleanUp();

    return retValue;
};

// Static member initialization
wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;

wxApp::wxApp()
{
    m_topWindow = NULL;
    wxTheApp = this;
    m_className = "";
    m_wantDebugOutput = TRUE ;
    m_appName = "";
    argc = 0;
    argv = NULL;
    m_exitOnFrameDelete = TRUE;

    m_mainColormap = (WXColormap) NULL;
    m_appContext = (WXAppContext) NULL;
    m_topLevelWidget = (WXWidget) NULL;
    m_maxRequestSize = 0;
    m_initialDisplay = (WXDisplay*) 0;
}

bool wxApp::Initialized()
{
    if (GetTopWindow())
        return TRUE;
    else
        return FALSE;
}

int wxApp::MainLoop()
{
    m_keepGoing = TRUE;

    /*
    * Sit around forever waiting to process X-events. Property Change
    * event are handled special, because they have to refer to
    * the root window rather than to a widget. therefore we can't
    * use an Xt-eventhandler.
    */

    XSelectInput(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()),
        XDefaultRootWindow(XtDisplay((Widget) wxTheApp->GetTopLevelWidget())),
        PropertyChangeMask);

    XEvent event;

    // Use this flag to allow breaking the loop via wxApp::ExitMainLoop()
    while (m_keepGoing)
    {
        XtAppNextEvent( (XtAppContext) wxTheApp->GetAppContext(), &event);

        ProcessXEvent((WXEvent*) & event);

        if (XtAppPending( (XtAppContext) wxTheApp->GetAppContext() ) == 0)
        {
            if (!ProcessIdle())
            {
#if wxUSE_THREADS
                // leave the main loop to give other threads a chance to
                // perform their GUI work
                wxMutexGuiLeave();
                wxUsleep(20);
                wxMutexGuiEnter();
#endif
            }
        }

    }

    return 0;
}

// Processes an X event.
void wxApp::ProcessXEvent(WXEvent* _event)
{
    XEvent* event = (XEvent*) _event;

    if (event->type == KeyPress)
    {
#ifdef __WXDEBUG__
        Widget widget = XtWindowToWidget(event->xany.display, event->xany.window);
        wxLogDebug("Got key press event for 0x%08x (parent = 0x%08x)",
                   widget, XtParent(widget));
#endif // DEBUG

	if (CheckForAccelerator(_event))
	{
            // Do nothing! We intercepted and processed the event as an
            // accelerator.
            return;
	}
#if 1
        // It seemed before that this hack was redundant and
        // key down events were being generated by wxCanvasInputEvent.
        // But no longer - why ???
        //
	else if (CheckForKeyDown(_event))
	{
            // We intercepted and processed the key down event
            return;
	}
#endif
	else
	{
            XtDispatchEvent(event);
	    return;
	}
    }
    else if (event->type == KeyRelease)
    {
        // TODO: work out why we still need this !  -michael
        //
        if (CheckForKeyUp(_event))
	{
	    // We intercepted and processed the key up event
	    return;
	}
	else
	{
	    XtDispatchEvent(event);
	    return;
	}
    }
    else if (event->type == PropertyNotify)
    {
        HandlePropertyChange(_event);
        return;
    }
    else if (event->type == ResizeRequest)
    {
        /* Terry Gitnick <terryg@scientech.com> - 1/21/98
         * If resize event, don't resize until the last resize event for this
         * window is recieved. Prevents flicker as windows are resized.
         */

        Display *disp = XtDisplay((Widget) wxTheApp->GetTopLevelWidget());
        Window win = event->xany.window;
        XEvent report;

        //  to avoid flicker
        report = * event;
        while( XCheckTypedWindowEvent (disp, win, ResizeRequest, &report));

        // TODO: when implementing refresh optimization, we can use
        // XtAddExposureToRegion to expand the window's paint region.

        XtDispatchEvent(event);
    }
    else
    {
        XtDispatchEvent(event);
    }
}

// Returns TRUE if more time is needed.
bool wxApp::ProcessIdle()
{
    wxIdleEvent event;
    event.SetEventObject(this);
    ProcessEvent(event);

    return event.MoreRequested();
}

void wxApp::ExitMainLoop()
{
    m_keepGoing = FALSE;
}

// Is a message/event pending?
bool wxApp::Pending()
{
    XFlush(XtDisplay( (Widget) wxTheApp->GetTopLevelWidget() ));

    // Fix by Doug from STI, to prevent a stall if non-X event
    // is found.
    return ((XtAppPending( (XtAppContext) GetAppContext() ) & XtIMXEvent) != 0) ;
}

// Dispatch a message.
void wxApp::Dispatch()
{
    //    XtAppProcessEvent( (XtAppContext) wxTheApp->GetAppContext(), XtIMAll);

    XEvent event;
    XtAppNextEvent((XtAppContext) GetAppContext(), &event);
    ProcessXEvent((WXEvent*) & event);
}

// This should be redefined in a derived class for
// handling property change events for XAtom IPC.
void wxApp::HandlePropertyChange(WXEvent *event)
{
    // by default do nothing special
    XtDispatchEvent((XEvent*) event); /* let Motif do the work */
}

void wxApp::OnIdle(wxIdleEvent& event)
{
    static bool inOnIdle = FALSE;

    // Avoid recursion (via ProcessEvent default case)
    if (inOnIdle)
        return;

    inOnIdle = TRUE;

    // 'Garbage' collection of windows deleted with Close().
    DeletePendingObjects();

#if wxUSE_THREADS
    // Flush pending events.
    ProcessPendingEvents();
#endif

    // flush the logged messages if any
    wxLog *pLog = wxLog::GetActiveTarget();
    if ( pLog != NULL && pLog->HasPendingMessages() )
        pLog->Flush();

    // Send OnIdle events to all windows
    bool needMore = SendIdleEvents();

    if (needMore)
        event.RequestMore(TRUE);

    inOnIdle = FALSE;
}

void wxWakeUpIdle()
{
    // **** please implement me! ****
    // Wake up the idle handler processor, even if it is in another thread...
}


// Send idle event to all top-level windows
bool wxApp::SendIdleEvents()
{
    bool needMore = FALSE;

    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
    while (node)
    {
        wxWindow* win = node->GetData();
        if (SendIdleEvents(win))
            needMore = TRUE;
        node = node->GetNext();
    }

    return needMore;
}

// Send idle event to window and all subwindows
bool wxApp::SendIdleEvents(wxWindow* win)
{
    bool needMore = FALSE;

    wxIdleEvent event;
    event.SetEventObject(win);
    win->ProcessEvent(event);

    if (event.MoreRequested())
        needMore = TRUE;

    wxNode* node = win->GetChildren().First();
    while (node)
    {
        wxWindow* win = (wxWindow*) node->Data();
        if (SendIdleEvents(win))
            needMore = TRUE;

        node = node->Next();
    }
    return needMore ;
}

void wxApp::DeletePendingObjects()
{
    wxNode *node = wxPendingDelete.First();
    while (node)
    {
        wxObject *obj = (wxObject *)node->Data();

        delete obj;

        if (wxPendingDelete.Member(obj))
            delete node;

        // Deleting one object may have deleted other pending
        // objects, so start from beginning of list again.
        node = wxPendingDelete.First();
    }
}

// Create an application context
bool wxApp::OnInitGui()
{
    XtToolkitInitialize() ;
    wxTheApp->m_appContext = (WXAppContext) XtCreateApplicationContext() ;
    Display *dpy = XtOpenDisplay((XtAppContext) wxTheApp->m_appContext,(String)NULL,NULL,
        (const char*) wxTheApp->GetClassName(), NULL, 0,
# if XtSpecificationRelease < 5
        (Cardinal*) &argc,
# else
        &argc,
# endif
        argv);

    if (!dpy) {
        wxString className(wxTheApp->GetClassName());
        wxLogError(_("wxWindows could not open display for '%s': exiting."),
                   (const char*) className);
        exit(-1);
    }
    m_initialDisplay = (WXDisplay*) dpy;

#ifdef __WXDEBUG__
    // install the X error handler
    gs_pfnXErrorHandler = XSetErrorHandler(wxXErrorHandler);
#endif // __WXDEBUG__

    wxTheApp->m_topLevelWidget = (WXWidget) XtAppCreateShell((String)NULL, (const char*) wxTheApp->GetClassName(),
        applicationShellWidgetClass,dpy,
        NULL,0) ;

    // Add general resize proc
    XtActionsRec rec;
    rec.string = "resize";
    rec.proc = (XtActionProc)wxWidgetResizeProc;
    XtAppAddActions((XtAppContext) wxTheApp->m_appContext, &rec, 1);

    GetMainColormap(dpy);
    m_maxRequestSize = XMaxRequestSize((Display*) dpy);

    return TRUE;
}

WXColormap wxApp::GetMainColormap(WXDisplay* display)
{
    if (!display) /* Must be called first with non-NULL display */
        return m_mainColormap;

    int defaultScreen = DefaultScreen((Display*) display);
    Screen* screen = XScreenOfDisplay((Display*) display, defaultScreen);

    Colormap c = DefaultColormapOfScreen(screen);

    if (!m_mainColormap)
        m_mainColormap = (WXColormap) c;

    return (WXColormap) c;
}

// Returns TRUE if an accelerator has been processed
bool wxApp::CheckForAccelerator(WXEvent* event)
{
    XEvent* xEvent = (XEvent*) event;
    if (xEvent->xany.type == KeyPress)
    {
        // Find a wxWindow for this window
        // TODO: should get display for the window, not the current display
        Widget widget = XtWindowToWidget((Display*) wxGetDisplay(), xEvent->xany.window);
        wxWindow* win = NULL;

        // Find the first wxWindow that corresponds to this event window
        while (widget && !(win = wxGetWindowFromTable(widget)))
            widget = XtParent(widget);

        if (!widget || !win)
            return FALSE;

        wxKeyEvent keyEvent(wxEVT_CHAR);
        wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);

        // Now we have a wxKeyEvent and we have a wxWindow.
        // Go up the hierarchy until we find a matching accelerator,
        // or we get to the top.
        while (win)
        {
            if (win->ProcessAccelerator(keyEvent))
                return TRUE;
            win = win->GetParent();
        }
        return FALSE;
    }
    return FALSE;
}

bool wxApp::CheckForKeyDown(WXEvent* event)
{
    XEvent* xEvent = (XEvent*) event;
    if (xEvent->xany.type == KeyPress)
    {
        Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
					 xEvent->xany.window);
	wxWindow* win = NULL;

	// Find the first wxWindow that corresponds to this event window
	while (widget && !(win = wxGetWindowFromTable(widget)))
            widget = XtParent(widget);

	if (!widget || !win)
            return FALSE;

	wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
	wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);

	return win->ProcessEvent( keyEvent );
    }

    return FALSE;
}

bool wxApp::CheckForKeyUp(WXEvent* event)
{
    XEvent* xEvent = (XEvent*) event;
    if (xEvent->xany.type == KeyRelease)
    {
        Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
					 xEvent->xany.window);
	wxWindow* win = NULL;

	// Find the first wxWindow that corresponds to this event window
	while (widget && !(win = wxGetWindowFromTable(widget)))
            widget = XtParent(widget);

	if (!widget || !win)
            return FALSE;

	wxKeyEvent keyEvent(wxEVT_KEY_UP);
	wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);

	return win->ProcessEvent( keyEvent );
    }

    return FALSE;
}

void wxExit()
{
    int retValue = 0;
    if (wxTheApp)
        retValue = wxTheApp->OnExit();

    wxApp::CleanUp();
    /*
    * Exit in some platform-specific way. Not recommended that the app calls this:
    * only for emergencies.
    */
    exit(retValue);
}

// Yield to other processes
bool wxYield()
{
    while (wxTheApp && wxTheApp->Pending())
        wxTheApp->Dispatch();

    // VZ: is it the same as this (taken from old wxExecute)?
#if 0
    XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
#endif

    return TRUE;
}

// TODO use XmGetPixmap (?) to get the really standard icons!

#include "wx/generic/info.xpm"
#include "wx/generic/error.xpm"
#include "wx/generic/question.xpm"
#include "wx/generic/warning.xpm"

wxIcon
wxApp::GetStdIcon(int which) const
{
    switch(which)
    {
        case wxICON_INFORMATION:
            return wxIcon(info_xpm);

        case wxICON_QUESTION:
            return wxIcon(question_xpm);

        case wxICON_EXCLAMATION:
            return wxIcon(warning_xpm);

        default:
            wxFAIL_MSG("requested non existent standard icon");
            // still fall through

        case wxICON_HAND:
            return wxIcon(error_xpm);
    }
}

// ----------------------------------------------------------------------------
// accessors for C modules
// ----------------------------------------------------------------------------

extern "C" XtAppContext wxGetAppContext()
{
    return (XtAppContext)wxTheApp->GetAppContext();
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: app.cpp
	3	// Purpose: wxApp
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 17/09/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "app.h"
	14	#endif
	15
	16	#include "wx/frame.h"
	17	#include "wx/app.h"
	18	#include "wx/utils.h"
	19	#include "wx/gdicmn.h"
	20	#include "wx/pen.h"
	21	#include "wx/brush.h"
	22	#include "wx/cursor.h"
	23	#include "wx/icon.h"
	24	#include "wx/palette.h"
	25	#include "wx/dc.h"
	26	#include "wx/dialog.h"
	27	#include "wx/msgdlg.h"
	28	#include "wx/log.h"
	29	#include "wx/module.h"
	30	#include "wx/memory.h"
	31	#include "wx/log.h"
	32	#include "wx/intl.h"
	33
	34	#if wxUSE_THREADS
	35	#include "wx/thread.h"
	36	#endif
	37
	38	#if wxUSE_WX_RESOURCES
	39	#include "wx/resource.h"
	40	#endif
	41
	42	#ifdef __VMS__
	43	#pragma message disable nosimpint
	44	#endif
	45	#include <Xm/Xm.h>
	46	#include <X11/Xlib.h>
	47	#include <X11/Xutil.h>
	48	#include <X11/Xresource.h>
	49	#include <X11/Xatom.h>
	50	#ifdef __VMS__
	51	#pragma message enable nosimpint
	52	#endif
	53
	54	#include "wx/motif/private.h"
	55
	56	#include <string.h>
	57
	58	extern char *wxBuffer;
	59	extern wxList wxPendingDelete;
	60
	61	wxApp *wxTheApp = NULL;
	62
	63	wxHashTable *wxWidgetHashTable = NULL;
	64
	65	IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
	66
	67	BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
	68	EVT_IDLE(wxApp::OnIdle)
	69	END_EVENT_TABLE()
	70
	71	#ifdef __WXDEBUG__
	72	typedef int (XErrorHandlerFunc)(Display , XErrorEvent *);
	73
	74	XErrorHandlerFunc gs_pfnXErrorHandler = 0;
	75
	76	static int wxXErrorHandler(Display dpy, XErrorEvent xevent)
	77	{
	78	// just forward to the default handler for now
	79	return gs_pfnXErrorHandler(dpy, xevent);
	80	}
	81	#endif // __WXDEBUG__
	82
	83	long wxApp::sm_lastMessageTime = 0;
	84
	85	bool wxApp::Initialize()
	86	{
	87	wxBuffer = new char[BUFSIZ + 512];
	88
	89	wxClassInfo::InitializeClasses();
	90
	91	// GL: I'm annoyed ... I don't know where to put this and I don't want to
	92	// create a module for that as it's part of the core.
	93	#if wxUSE_THREADS
	94	wxPendingEventsLocker = new wxCriticalSection();
	95	#endif
	96
	97	wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
	98	wxTheColourDatabase->Initialize();
	99
	100	wxInitializeStockLists();
	101	wxInitializeStockObjects();
	102
	103	#if wxUSE_WX_RESOURCES
	104	wxInitializeResourceSystem();
	105	#endif
	106
	107	// For PostScript printing
	108	#if wxUSE_POSTSCRIPT
	109	/* Done using wxModule now
	110	wxInitializePrintSetupData();
	111	wxThePrintPaperDatabase = new wxPrintPaperDatabase;
	112	wxThePrintPaperDatabase->CreateDatabase();
	113	*/
	114	#endif
	115
	116	wxBitmap::InitStandardHandlers();
	117
	118	wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
	119
	120	wxModule::RegisterModules();
	121	if (!wxModule::InitializeModules()) return FALSE;
	122
	123	return TRUE;
	124	}
	125
	126	void wxApp::CleanUp()
	127	{
	128	delete wxWidgetHashTable;
	129	wxWidgetHashTable = NULL;
	130
	131	wxModule::CleanUpModules();
	132
	133	#if wxUSE_WX_RESOURCES
	134	wxCleanUpResourceSystem();
	135	#endif
	136
	137	wxDeleteStockObjects() ;
	138
	139	// Destroy all GDI lists, etc.
	140
	141	delete wxTheBrushList;
	142	wxTheBrushList = NULL;
	143
	144	delete wxThePenList;
	145	wxThePenList = NULL;
	146
	147	delete wxTheFontList;
	148	wxTheFontList = NULL;
	149
	150	delete wxTheBitmapList;
	151	wxTheBitmapList = NULL;
	152
	153	delete wxTheColourDatabase;
	154	wxTheColourDatabase = NULL;
	155
	156	#if wxUSE_POSTSCRIPT
	157	/* Done using wxModule now
	158	wxInitializePrintSetupData(FALSE);
	159	delete wxThePrintPaperDatabase;
	160	wxThePrintPaperDatabase = NULL;
	161	*/
	162	#endif
	163
	164	wxBitmap::CleanUpHandlers();
	165
	166	delete[] wxBuffer;
	167	wxBuffer = NULL;
	168
	169	wxClassInfo::CleanUpClasses();
	170
	171	delete wxTheApp;
	172	wxTheApp = NULL;
	173
	174	// GL: I'm annoyed ... I don't know where to put this and I don't want to
	175	// create a module for that as it's part of the core.
	176	#if wxUSE_THREADS
	177	delete wxPendingEvents;
	178	delete wxPendingEventsLocker;
	179	#endif
	180
	181	#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) \|\| wxUSE_DEBUG_CONTEXT
	182	// At this point we want to check if there are any memory
	183	// blocks that aren't part of the wxDebugContext itself,
	184	// as a special case. Then when dumping we need to ignore
	185	// wxDebugContext, too.
	186	if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
	187	{
	188	wxLogDebug("There were memory leaks.\n");
	189	wxDebugContext::Dump();
	190	wxDebugContext::PrintStatistics();
	191	}
	192	#endif
	193
	194	// do it as the very last thing because everything else can log messages
	195	wxLog::DontCreateOnDemand();
	196	// do it as the very last thing because everything else can log messages
	197	delete wxLog::SetActiveTarget(NULL);
	198	}
	199
	200	int wxEntry( int argc, char *argv[] )
	201	{
	202	#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) \|\| wxUSE_DEBUG_CONTEXT
	203	// This seems to be necessary since there are 'rogue'
	204	// objects present at this point (perhaps global objects?)
	205	// Setting a checkpoint will ignore them as far as the
	206	// memory checking facility is concerned.
	207	// Of course you may argue that memory allocated in globals should be
	208	// checked, but this is a reasonable compromise.
	209	wxDebugContext::SetCheckpoint();
	210	#endif
	211
	212	if (!wxApp::Initialize())
	213	return FALSE;
	214
	215	if (!wxTheApp)
	216	{
	217	if (!wxApp::GetInitializerFunction())
	218	{
	219	printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
	220	return 0;
	221	};
	222
	223	wxTheApp = (wxApp) ( wxApp::GetInitializerFunction()) ();
	224	};
	225
	226	if (!wxTheApp)
	227	{
	228	printf( "wxWindows error: wxTheApp == NULL\n" );
	229	return 0;
	230	};
	231
	232	wxTheApp->SetClassName(wxFileNameFromPath(argv[0]));
	233	wxTheApp->SetAppName(wxFileNameFromPath(argv[0]));
	234
	235	wxTheApp->argc = argc;
	236	wxTheApp->argv = argv;
	237
	238	// GUI-specific initialization, such as creating an app context.
	239	wxTheApp->OnInitGui();
	240
	241	// Here frames insert themselves automatically into wxTopLevelWindows by
	242	// getting created in OnInit().
	243
	244	int retValue = 0;
	245	if (wxTheApp->OnInit())
	246	{
	247	if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
	248	}
	249
	250	// flush the logged messages if any
	251	wxLog *pLog = wxLog::GetActiveTarget();
	252	if ( pLog != NULL && pLog->HasPendingMessages() )
	253	pLog->Flush();
	254
	255	delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
	256	// for further messages
	257
	258	if (wxTheApp->GetTopWindow())
	259	{
	260	delete wxTheApp->GetTopWindow();
	261	wxTheApp->SetTopWindow(NULL);
	262	}
	263
	264	wxTheApp->DeletePendingObjects();
	265
	266	wxTheApp->OnExit();
	267
	268	wxApp::CleanUp();
	269
	270	return retValue;
	271	};
	272
	273	// Static member initialization
	274	wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
	275
	276	wxApp::wxApp()
	277	{
	278	m_topWindow = NULL;
	279	wxTheApp = this;
	280	m_className = "";
	281	m_wantDebugOutput = TRUE ;
	282	m_appName = "";
	283	argc = 0;
	284	argv = NULL;
	285	m_exitOnFrameDelete = TRUE;
	286
	287	m_mainColormap = (WXColormap) NULL;
	288	m_appContext = (WXAppContext) NULL;
	289	m_topLevelWidget = (WXWidget) NULL;
	290	m_maxRequestSize = 0;
	291	m_initialDisplay = (WXDisplay*) 0;
	292	}
	293
	294	bool wxApp::Initialized()
	295	{
	296	if (GetTopWindow())
	297	return TRUE;
	298	else
	299	return FALSE;
	300	}
	301
	302	int wxApp::MainLoop()
	303	{
	304	m_keepGoing = TRUE;
	305
	306	/*
	307	* Sit around forever waiting to process X-events. Property Change
	308	* event are handled special, because they have to refer to
	309	* the root window rather than to a widget. therefore we can't
	310	* use an Xt-eventhandler.
	311	*/
	312
	313	XSelectInput(XtDisplay((Widget) wxTheApp->GetTopLevelWidget()),
	314	XDefaultRootWindow(XtDisplay((Widget) wxTheApp->GetTopLevelWidget())),
	315	PropertyChangeMask);
	316
	317	XEvent event;
	318
	319	// Use this flag to allow breaking the loop via wxApp::ExitMainLoop()
	320	while (m_keepGoing)
	321	{
	322	XtAppNextEvent( (XtAppContext) wxTheApp->GetAppContext(), &event);
	323
	324	ProcessXEvent((WXEvent*) & event);
	325
	326	if (XtAppPending( (XtAppContext) wxTheApp->GetAppContext() ) == 0)
	327	{
	328	if (!ProcessIdle())
	329	{
	330	#if wxUSE_THREADS
	331	// leave the main loop to give other threads a chance to
	332	// perform their GUI work
	333	wxMutexGuiLeave();
	334	wxUsleep(20);
	335	wxMutexGuiEnter();
	336	#endif
	337	}
	338	}
	339
	340	}
	341
	342	return 0;
	343	}
	344
	345	// Processes an X event.
	346	void wxApp::ProcessXEvent(WXEvent* _event)
	347	{
	348	XEvent* event = (XEvent*) _event;
	349
	350	if (event->type == KeyPress)
	351	{
	352	#ifdef __WXDEBUG__
	353	Widget widget = XtWindowToWidget(event->xany.display, event->xany.window);
	354	wxLogDebug("Got key press event for 0x%08x (parent = 0x%08x)",
	355	widget, XtParent(widget));
	356	#endif // DEBUG
	357
	358	if (CheckForAccelerator(_event))
	359	{
	360	// Do nothing! We intercepted and processed the event as an
	361	// accelerator.
	362	return;
	363	}
	364	#if 1
	365	// It seemed before that this hack was redundant and
	366	// key down events were being generated by wxCanvasInputEvent.
	367	// But no longer - why ???
	368	//
	369	else if (CheckForKeyDown(_event))
	370	{
	371	// We intercepted and processed the key down event
	372	return;
	373	}
	374	#endif
	375	else
	376	{
	377	XtDispatchEvent(event);
	378	return;
	379	}
	380	}
	381	else if (event->type == KeyRelease)
	382	{
	383	// TODO: work out why we still need this ! -michael
	384	//
	385	if (CheckForKeyUp(_event))
	386	{
	387	// We intercepted and processed the key up event
	388	return;
	389	}
	390	else
	391	{
	392	XtDispatchEvent(event);
	393	return;
	394	}
	395	}
	396	else if (event->type == PropertyNotify)
	397	{
	398	HandlePropertyChange(_event);
	399	return;
	400	}
	401	else if (event->type == ResizeRequest)
	402	{
	403	/* Terry Gitnick <terryg@scientech.com> - 1/21/98
	404	* If resize event, don't resize until the last resize event for this
	405	* window is recieved. Prevents flicker as windows are resized.
	406	*/
	407
	408	Display *disp = XtDisplay((Widget) wxTheApp->GetTopLevelWidget());
	409	Window win = event->xany.window;
	410	XEvent report;
	411
	412	// to avoid flicker
	413	report = * event;
	414	while( XCheckTypedWindowEvent (disp, win, ResizeRequest, &report));
	415
	416	// TODO: when implementing refresh optimization, we can use
	417	// XtAddExposureToRegion to expand the window's paint region.
	418
	419	XtDispatchEvent(event);
	420	}
	421	else
	422	{
	423	XtDispatchEvent(event);
	424	}
	425	}
	426
	427	// Returns TRUE if more time is needed.
	428	bool wxApp::ProcessIdle()
	429	{
	430	wxIdleEvent event;
	431	event.SetEventObject(this);
	432	ProcessEvent(event);
	433
	434	return event.MoreRequested();
	435	}
	436
	437	void wxApp::ExitMainLoop()
	438	{
	439	m_keepGoing = FALSE;
	440	}
	441
	442	// Is a message/event pending?
	443	bool wxApp::Pending()
	444	{
	445	XFlush(XtDisplay( (Widget) wxTheApp->GetTopLevelWidget() ));
	446
	447	// Fix by Doug from STI, to prevent a stall if non-X event
	448	// is found.
	449	return ((XtAppPending( (XtAppContext) GetAppContext() ) & XtIMXEvent) != 0) ;
	450	}
	451
	452	// Dispatch a message.
	453	void wxApp::Dispatch()
	454	{
	455	// XtAppProcessEvent( (XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
	456
	457	XEvent event;
	458	XtAppNextEvent((XtAppContext) GetAppContext(), &event);
	459	ProcessXEvent((WXEvent*) & event);
	460	}
	461
	462	// This should be redefined in a derived class for
	463	// handling property change events for XAtom IPC.
	464	void wxApp::HandlePropertyChange(WXEvent *event)
	465	{
	466	// by default do nothing special
	467	XtDispatchEvent((XEvent) event); / let Motif do the work */
	468	}
	469
	470	void wxApp::OnIdle(wxIdleEvent& event)
	471	{
	472	static bool inOnIdle = FALSE;
	473
	474	// Avoid recursion (via ProcessEvent default case)
	475	if (inOnIdle)
	476	return;
	477
	478	inOnIdle = TRUE;
	479
	480	// 'Garbage' collection of windows deleted with Close().
	481	DeletePendingObjects();
	482
	483	#if wxUSE_THREADS
	484	// Flush pending events.
	485	ProcessPendingEvents();
	486	#endif
	487
	488	// flush the logged messages if any
	489	wxLog *pLog = wxLog::GetActiveTarget();
	490	if ( pLog != NULL && pLog->HasPendingMessages() )
	491	pLog->Flush();
	492
	493	// Send OnIdle events to all windows
	494	bool needMore = SendIdleEvents();
	495
	496	if (needMore)
	497	event.RequestMore(TRUE);
	498
	499	inOnIdle = FALSE;
	500	}
	501
	502	void wxWakeUpIdle()
	503	{
	504	// ** please implement me! **
	505	// Wake up the idle handler processor, even if it is in another thread...
	506	}
	507
	508
	509	// Send idle event to all top-level windows
	510	bool wxApp::SendIdleEvents()
	511	{
	512	bool needMore = FALSE;
	513
	514	wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
	515	while (node)
	516	{
	517	wxWindow* win = node->GetData();
	518	if (SendIdleEvents(win))
	519	needMore = TRUE;
	520	node = node->GetNext();
	521	}
	522
	523	return needMore;
	524	}
	525
	526	// Send idle event to window and all subwindows
	527	bool wxApp::SendIdleEvents(wxWindow* win)
	528	{
	529	bool needMore = FALSE;
	530
	531	wxIdleEvent event;
	532	event.SetEventObject(win);
	533	win->ProcessEvent(event);
	534
	535	if (event.MoreRequested())
	536	needMore = TRUE;
	537
	538	wxNode* node = win->GetChildren().First();
	539	while (node)
	540	{
	541	wxWindow* win = (wxWindow*) node->Data();
	542	if (SendIdleEvents(win))
	543	needMore = TRUE;
	544
	545	node = node->Next();
	546	}
	547	return needMore ;
	548	}
	549
	550	void wxApp::DeletePendingObjects()
	551	{
	552	wxNode *node = wxPendingDelete.First();
	553	while (node)
	554	{
	555	wxObject obj = (wxObject )node->Data();
	556
	557	delete obj;
	558
	559	if (wxPendingDelete.Member(obj))
	560	delete node;
	561
	562	// Deleting one object may have deleted other pending
	563	// objects, so start from beginning of list again.
	564	node = wxPendingDelete.First();
	565	}
	566	}
	567
	568	// Create an application context
	569	bool wxApp::OnInitGui()
	570	{
	571	XtToolkitInitialize() ;
	572	wxTheApp->m_appContext = (WXAppContext) XtCreateApplicationContext() ;
	573	Display *dpy = XtOpenDisplay((XtAppContext) wxTheApp->m_appContext,(String)NULL,NULL,
	574	(const char*) wxTheApp->GetClassName(), NULL, 0,
	575	# if XtSpecificationRelease < 5
	576	(Cardinal*) &argc,
	577	# else
	578	&argc,
	579	# endif
	580	argv);
	581
	582	if (!dpy) {
	583	wxString className(wxTheApp->GetClassName());
	584	wxLogError(_("wxWindows could not open display for '%s': exiting."),
	585	(const char*) className);
	586	exit(-1);
	587	}
	588	m_initialDisplay = (WXDisplay*) dpy;
	589
	590	#ifdef __WXDEBUG__
	591	// install the X error handler
	592	gs_pfnXErrorHandler = XSetErrorHandler(wxXErrorHandler);
	593	#endif // __WXDEBUG__
	594
	595	wxTheApp->m_topLevelWidget = (WXWidget) XtAppCreateShell((String)NULL, (const char*) wxTheApp->GetClassName(),
	596	applicationShellWidgetClass,dpy,
	597	NULL,0) ;
	598
	599	// Add general resize proc
	600	XtActionsRec rec;
	601	rec.string = "resize";
	602	rec.proc = (XtActionProc)wxWidgetResizeProc;
	603	XtAppAddActions((XtAppContext) wxTheApp->m_appContext, &rec, 1);
	604
	605	GetMainColormap(dpy);
	606	m_maxRequestSize = XMaxRequestSize((Display*) dpy);
	607
	608	return TRUE;
	609	}
	610
	611	WXColormap wxApp::GetMainColormap(WXDisplay* display)
	612	{
	613	if (!display) /* Must be called first with non-NULL display */
	614	return m_mainColormap;
	615
	616	int defaultScreen = DefaultScreen((Display*) display);
	617	Screen* screen = XScreenOfDisplay((Display*) display, defaultScreen);
	618
	619	Colormap c = DefaultColormapOfScreen(screen);
	620
	621	if (!m_mainColormap)
	622	m_mainColormap = (WXColormap) c;
	623
	624	return (WXColormap) c;
	625	}
	626
	627	// Returns TRUE if an accelerator has been processed
	628	bool wxApp::CheckForAccelerator(WXEvent* event)
	629	{
	630	XEvent* xEvent = (XEvent*) event;
	631	if (xEvent->xany.type == KeyPress)
	632	{
	633	// Find a wxWindow for this window
	634	// TODO: should get display for the window, not the current display
	635	Widget widget = XtWindowToWidget((Display*) wxGetDisplay(), xEvent->xany.window);
	636	wxWindow* win = NULL;
	637
	638	// Find the first wxWindow that corresponds to this event window
	639	while (widget && !(win = wxGetWindowFromTable(widget)))
	640	widget = XtParent(widget);
	641
	642	if (!widget \|\| !win)
	643	return FALSE;
	644
	645	wxKeyEvent keyEvent(wxEVT_CHAR);
	646	wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);
	647
	648	// Now we have a wxKeyEvent and we have a wxWindow.
	649	// Go up the hierarchy until we find a matching accelerator,
	650	// or we get to the top.
	651	while (win)
	652	{
	653	if (win->ProcessAccelerator(keyEvent))
	654	return TRUE;
	655	win = win->GetParent();
	656	}
	657	return FALSE;
	658	}
	659	return FALSE;
	660	}
	661
	662	bool wxApp::CheckForKeyDown(WXEvent* event)
	663	{
	664	XEvent* xEvent = (XEvent*) event;
	665	if (xEvent->xany.type == KeyPress)
	666	{
	667	Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
	668	xEvent->xany.window);
	669	wxWindow* win = NULL;
	670
	671	// Find the first wxWindow that corresponds to this event window
	672	while (widget && !(win = wxGetWindowFromTable(widget)))
	673	widget = XtParent(widget);
	674
	675	if (!widget \|\| !win)
	676	return FALSE;
	677
	678	wxKeyEvent keyEvent(wxEVT_KEY_DOWN);
	679	wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);
	680
	681	return win->ProcessEvent( keyEvent );
	682	}
	683
	684	return FALSE;
	685	}
	686
	687	bool wxApp::CheckForKeyUp(WXEvent* event)
	688	{
	689	XEvent* xEvent = (XEvent*) event;
	690	if (xEvent->xany.type == KeyRelease)
	691	{
	692	Widget widget = XtWindowToWidget((Display*) wxGetDisplay(),
	693	xEvent->xany.window);
	694	wxWindow* win = NULL;
	695
	696	// Find the first wxWindow that corresponds to this event window
	697	while (widget && !(win = wxGetWindowFromTable(widget)))
	698	widget = XtParent(widget);
	699
	700	if (!widget \|\| !win)
	701	return FALSE;
	702
	703	wxKeyEvent keyEvent(wxEVT_KEY_UP);
	704	wxTranslateKeyEvent(keyEvent, win, (Widget) 0, xEvent);
	705
	706	return win->ProcessEvent( keyEvent );
	707	}
	708
	709	return FALSE;
	710	}
	711
	712	void wxExit()
	713	{
	714	int retValue = 0;
	715	if (wxTheApp)
	716	retValue = wxTheApp->OnExit();
	717
	718	wxApp::CleanUp();
	719	/*
	720	* Exit in some platform-specific way. Not recommended that the app calls this:
	721	* only for emergencies.
	722	*/
	723	exit(retValue);
	724	}
	725
	726	// Yield to other processes
	727	bool wxYield()
	728	{
	729	while (wxTheApp && wxTheApp->Pending())
	730	wxTheApp->Dispatch();
	731
	732	// VZ: is it the same as this (taken from old wxExecute)?
	733	#if 0
	734	XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMAll);
	735	#endif
	736
	737	return TRUE;
	738	}
	739
	740	// TODO use XmGetPixmap (?) to get the really standard icons!
	741
	742	#include "wx/generic/info.xpm"
	743	#include "wx/generic/error.xpm"
	744	#include "wx/generic/question.xpm"
	745	#include "wx/generic/warning.xpm"
	746
	747	wxIcon
	748	wxApp::GetStdIcon(int which) const
	749	{
	750	switch(which)
	751	{
	752	case wxICON_INFORMATION:
	753	return wxIcon(info_xpm);
	754
	755	case wxICON_QUESTION:
	756	return wxIcon(question_xpm);
	757
	758	case wxICON_EXCLAMATION:
	759	return wxIcon(warning_xpm);
	760
	761	default:
	762	wxFAIL_MSG("requested non existent standard icon");
	763	// still fall through
	764
	765	case wxICON_HAND:
	766	return wxIcon(error_xpm);
	767	}
	768	}
	769
	770	// ----------------------------------------------------------------------------
	771	// accessors for C modules
	772	// ----------------------------------------------------------------------------
	773
	774	extern "C" XtAppContext wxGetAppContext()
	775	{
	776	return (XtAppContext)wxTheApp->GetAppContext();
	777	}