src/motif/toplevel.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        motif/toplevel.cpp
   3 // Purpose:     wxTopLevelWindow Motif implementation
   4 // Author:      Mattia Barbon
   5 // Modified by:
   6 // Created:     12/10/2002
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Mattia Barbon
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "toplevel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #include "wx/toplevel.h"
  28 #include "wx/app.h"
  29
  30 #ifdef __VMS__
  31 #define XtDisplay XTDISPLAY
  32 #define XtParent XTPARENT
  33 #define XtScreen XTSCREEN
  34 #define XtWindow XTWINDOW
  35 #pragma message disable nosimpint
  36 #endif
  37
  38 #include <Xm/Xm.h>
  39 #include <X11/Shell.h>
  40 #include <X11/Core.h>
  41 #if XmVersion >= 1002
  42     #include <Xm/XmAll.h>
  43 #else
  44     #include <Xm/Frame.h>
  45 #endif
  46
  47 #ifdef __VMS__
  48     #pragma message enable nosimpint
  49 #endif
  50
  51 #include "wx/motif/private.h"
  52
  53 wxList wxModelessWindows;  // Frames and modeless dialogs
  54
  55 // ---------------------------------------------------------------------------
  56 // Callbacks
  57 // ---------------------------------------------------------------------------
  58
  59 static void wxCloseTLWCallback( Widget widget, XtPointer client_data,
  60                                 XmAnyCallbackStruct *cbs );
  61 static void wxTLWEventHandler( Widget wid,
  62                                XtPointer client_data,
  63                                XEvent* event,
  64                                Boolean *continueToDispatch );
  65
  66 // ===========================================================================
  67 // wxTopLevelWindowMotif implementation
  68 // ===========================================================================
  69
  70 void wxTopLevelWindowMotif::PreDestroy()
  71 {
  72 #ifdef __VMS
  73 #pragma message disable codcauunr
  74 #endif
  75    if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
  76         wxModelessWindows.DeleteObject(this);
  77 #ifdef __VMS
  78 #pragma message enable codcauunr
  79 #endif
  80
  81     m_icons.m_icons.Empty();
  82
  83     DestroyChildren();
  84
  85     // MessageDialog and FileDialog do not have a client widget
  86     if( GetClientWidget() )
  87     {
  88         XtRemoveEventHandler( (Widget)GetClientWidget(),
  89                               ButtonPressMask | ButtonReleaseMask |
  90                               PointerMotionMask | KeyPressMask,
  91                               FALSE,
  92                               wxTLWEventHandler,
  93                               (XtPointer)this );
  94     }
  95 }
  96
  97 wxTopLevelWindowMotif::~wxTopLevelWindowMotif()
  98 {
  99     SetMainWidget( (WXWidget)0 );
 100 }
 101
 102 void wxTopLevelWindowMotif::Init()
 103 {
 104     m_isShown = FALSE;
 105 }
 106
 107 bool wxTopLevelWindowMotif::Create( wxWindow *parent, wxWindowID id,
 108                                     const wxString& title,
 109                                     const wxPoint& pos,
 110                                     const wxSize& size,
 111                                     long style,
 112                                     const wxString& name )
 113 {
 114     SetName(name);
 115     m_windowStyle = style;
 116
 117     if ( parent )
 118         parent->AddChild(this);
 119
 120     wxTopLevelWindows.Append(this);
 121
 122     m_windowId = ( id > -1 ) ? id : NewControlId();
 123
 124     bool retval = DoCreate( parent, id, title, pos, size, style, name );
 125
 126     if( !retval ) return FALSE;
 127
 128     // Intercept CLOSE messages from the window manager
 129     Widget shell = (Widget)GetShellWidget();
 130     Atom WM_DELETE_WINDOW = XmInternAtom( XtDisplay( shell ),
 131                                           "WM_DELETE_WINDOW", False );
 132
 133     // Remove and add WM_DELETE_WINDOW so ours is only handler
 134     // This only appears to be necessary for wxDialog, but does not hurt
 135     // for wxFrame
 136     XmRemoveWMProtocols( shell, &WM_DELETE_WINDOW, 1 );
 137     XmAddWMProtocols( shell, &WM_DELETE_WINDOW, 1 );
 138     XmActivateWMProtocol( shell, WM_DELETE_WINDOW );
 139
 140     // Modified Steve Hammes for Motif 2.0
 141 #if (XmREVISION > 1 || XmVERSION > 1)
 142     XmAddWMProtocolCallback( shell, WM_DELETE_WINDOW,
 143                              (XtCallbackProc)wxCloseTLWCallback,
 144                              (XtPointer)this );
 145 #elif XmREVISION == 1
 146     XmAddWMProtocolCallback( shell, WM_DELETE_WINDOW,
 147                              (XtCallbackProc)wxCloseTLWCallback,
 148                              (caddr_t)this );
 149 #else
 150     XmAddWMProtocolCallback( shell, WM_DELETE_WINDOW,
 151                              (void (*)())wxCloseTLWCallback, (caddr_t)this );
 152 #endif
 153
 154     // This patch come from Torsten Liermann lier@lier1.muc.de
 155     if( XmIsMotifWMRunning( shell ) )
 156     {
 157         int decor = 0 ;
 158         if( m_windowStyle & wxRESIZE_BORDER )
 159             decor |= MWM_DECOR_RESIZEH;
 160         if( m_windowStyle & wxSYSTEM_MENU )
 161             decor |= MWM_DECOR_MENU;
 162         if( ( m_windowStyle & wxCAPTION ) ||
 163             ( m_windowStyle & wxTINY_CAPTION_HORIZ ) ||
 164             ( m_windowStyle & wxTINY_CAPTION_VERT ) )
 165             decor |= MWM_DECOR_TITLE;
 166         if( m_windowStyle & wxTHICK_FRAME )
 167             decor |= MWM_DECOR_BORDER;
 168         if( m_windowStyle & wxMINIMIZE_BOX )
 169             decor |= MWM_DECOR_MINIMIZE;
 170         if( m_windowStyle & wxMAXIMIZE_BOX )
 171             decor |= MWM_DECOR_MAXIMIZE;
 172
 173         XtVaSetValues( shell,
 174                        XmNmwmDecorations, decor,
 175                        NULL );
 176     }
 177     else
 178     {
 179         // This allows non-Motif window managers to support at least the
 180         // no-decorations case.
 181         if( ( m_windowStyle & wxCAPTION ) != wxCAPTION )
 182             XtVaSetValues( shell,
 183                            XmNoverrideRedirect, TRUE,
 184                            NULL );
 185     }
 186
 187     XtAddEventHandler( (Widget)GetClientWidget(),
 188                        ButtonPressMask | ButtonReleaseMask |
 189                        PointerMotionMask | KeyPressMask,
 190                        FALSE,
 191                        wxTLWEventHandler,
 192                        (XtPointer)this );
 193
 194     return retval;
 195 }
 196
 197 void wxTopLevelWindowMotif::DoGetPosition(int *x, int *y) const
 198 {
 199     Widget top = (Widget) GetTopWidget();
 200     Window parent_window = XtWindow((Widget) top),
 201         next_parent   = XtWindow((Widget) top),
 202         root          = RootWindowOfScreen(XtScreen((Widget) top));
 203
 204     // search for the parent that is child of ROOT, because the WM may
 205     // reparent twice and notify only the next parent (like FVWM)
 206     while (next_parent != root) {
 207         Window *theChildren; unsigned int n;
 208         parent_window = next_parent;
 209         XQueryTree(XtDisplay((Widget) top), parent_window, &root,
 210             &next_parent, &theChildren, &n);
 211         XFree(theChildren); // not needed
 212     }
 213     int xx, yy; unsigned int dummy;
 214     XGetGeometry(XtDisplay((Widget) top), parent_window, &root,
 215         &xx, &yy, &dummy, &dummy, &dummy, &dummy);
 216     if (x) *x = xx;
 217     if (y) *y = yy;
 218 }
 219
 220 void wxTopLevelWindowMotif::Raise()
 221 {
 222     Widget top = (Widget) GetTopWidget();
 223     Window parent_window = XtWindow( top ),
 224         next_parent   = XtWindow( top ),
 225         root          = RootWindowOfScreen( XtScreen( top ) );
 226     // search for the parent that is child of ROOT, because the WM may
 227     // reparent twice and notify only the next parent (like FVWM)
 228     while( next_parent != root )
 229     {
 230         Window *theChildren;
 231         unsigned int n;
 232
 233         parent_window = next_parent;
 234         XQueryTree( XtDisplay( top ), parent_window, &root,
 235             &next_parent, &theChildren, &n );
 236         XFree( theChildren ); // not needed
 237     }
 238     XRaiseWindow( XtDisplay( top ), parent_window );
 239 }
 240
 241 void wxTopLevelWindowMotif::Lower()
 242 {
 243     Widget top = (Widget) GetTopWidget();
 244     Window parent_window = XtWindow( top ),
 245         next_parent   = XtWindow( top ),
 246         root          = RootWindowOfScreen( XtScreen( top ) );
 247     // search for the parent that is child of ROOT, because the WM may
 248     // reparent twice and notify only the next parent (like FVWM)
 249     while( next_parent != root )
 250     {
 251         Window *theChildren;
 252         unsigned int n;
 253
 254         parent_window = next_parent;
 255         XQueryTree( XtDisplay( top ), parent_window, &root,
 256             &next_parent, &theChildren, &n );
 257         XFree( theChildren ); // not needed
 258     }
 259     XLowerWindow( XtDisplay( top ), parent_window );
 260 }
 261
 262 static inline Widget GetShell( const wxTopLevelWindowMotif* tlw )
 263 {
 264     Widget main = (Widget) tlw->GetMainWidget();
 265     if( !main ) return (Widget) NULL;
 266
 267     return XtParent( main );
 268 }
 269
 270 WXWidget wxTopLevelWindowMotif::GetShellWidget() const
 271 {
 272     return (WXWidget) GetShell( this );
 273 }
 274
 275 bool wxTopLevelWindowMotif::ShowFullScreen( bool show,
 276                                             long style )
 277 {
 278     // TODO, see wxGTK
 279     return FALSE;
 280 }
 281
 282 bool wxTopLevelWindowMotif::IsFullScreen() const
 283 {
 284     // TODO, see wxGTK
 285     return FALSE;
 286 }
 287
 288 void wxTopLevelWindowMotif::Restore()
 289 {
 290     Widget shell = GetShell( this );
 291
 292     if( shell )
 293         XtVaSetValues( shell,
 294                        XmNiconic, FALSE,
 295                        NULL );
 296 }
 297
 298 void wxTopLevelWindowMotif::Iconize( bool iconize )
 299 {
 300     Widget shell = GetShell( this );
 301     if( !shell ) return;
 302
 303     if( !iconize )
 304         Show( TRUE );
 305
 306     XtVaSetValues( shell,
 307                    XmNiconic, (Boolean)iconize,
 308                    NULL );
 309 }
 310
 311 bool wxTopLevelWindowMotif::IsIconized() const
 312 {
 313     Widget shell = GetShell( this );
 314
 315     if( !shell )
 316         return FALSE;
 317
 318     Boolean iconic;
 319     XtVaGetValues( shell,
 320                    XmNiconic, &iconic,
 321                    NULL );
 322
 323     return iconic;
 324 }
 325
 326 void wxTopLevelWindowMotif::Maximize( bool maximize )
 327 {
 328     Show( TRUE );
 329
 330     if( maximize )
 331         Restore();
 332 }
 333
 334 bool wxTopLevelWindowMotif::IsMaximized() const
 335 {
 336     return FALSE;
 337 }
 338
 339 void wxTopLevelWindowMotif::DoSetSizeHints( int minW, int minH,
 340                                             int maxW, int maxH,
 341                                             int incW, int incH )
 342 {
 343     wxTopLevelWindowBase::DoSetSizeHints( minW, minH, maxW, maxH, incW, incH );
 344
 345     int count = 0;
 346     Arg args[6];
 347
 348     if( minW > -1 ) { XtSetArg( args[count], XmNminWidth,  minW ); ++count; }
 349     if( minH > -1 ) { XtSetArg( args[count], XmNminHeight, minH ); ++count; }
 350     if( maxW > -1 ) { XtSetArg( args[count], XmNmaxWidth,  maxW ); ++count; }
 351     if( maxH > -1 ) { XtSetArg( args[count], XmNmaxHeight, maxH ); ++count; }
 352     if( incW > -1 ) { XtSetArg( args[count], XmNwidthInc,  incW ); ++count; }
 353     if( incH > -1 ) { XtSetArg( args[count], XmNheightInc, incH ); ++count; }
 354
 355     XtSetValues( (Widget)GetShellWidget(), args, count );
 356 }
 357
 358 bool wxTopLevelWindowMotif::SetShape( const wxRegion& region )
 359 {
 360     return wxDoSetShape( (Display*)GetXDisplay(),
 361                          XtWindow( (Widget)GetShellWidget() ),
 362                          region );
 363 }
 364
 365 // ---------------------------------------------------------------------------
 366 // Callback definition
 367 // ---------------------------------------------------------------------------
 368
 369 // Handle a close event from the window manager
 370 static void wxCloseTLWCallback( Widget WXUNUSED(widget), XtPointer client_data,
 371                                 XmAnyCallbackStruct *WXUNUSED(cbs) )
 372 {
 373     wxTopLevelWindowMotif* tlw = (wxTopLevelWindowMotif*)client_data;
 374     wxCloseEvent closeEvent( wxEVT_CLOSE_WINDOW, tlw->GetId() );
 375     closeEvent.SetEventObject( tlw );
 376
 377     // May delete the dialog (with delayed deletion)
 378     tlw->GetEventHandler()->ProcessEvent(closeEvent);
 379 }
 380
 381 void wxTLWEventHandler( Widget wid,
 382                         XtPointer WXUNUSED(client_data),
 383                         XEvent* event,
 384                         Boolean* continueToDispatch)
 385 {
 386     wxTopLevelWindowMotif* tlw =
 387         (wxTopLevelWindowMotif*)wxGetWindowFromTable( wid );
 388
 389     if( tlw )
 390     {
 391         wxMouseEvent wxevent( wxEVT_NULL );
 392
 393         if( wxTranslateMouseEvent( wxevent, tlw, wid, event ) )
 394         {
 395             wxevent.SetEventObject( tlw );
 396             wxevent.SetId( tlw->GetId() );
 397             tlw->GetEventHandler()->ProcessEvent( wxevent );
 398         }
 399         else
 400         {
 401             // An attempt to implement OnCharHook by calling OnCharHook first;
 402             // if this returns TRUE, set continueToDispatch to False
 403             // (don't continue processing).
 404             // Otherwise set it to True and call OnChar.
 405             wxKeyEvent keyEvent( wxEVT_CHAR );
 406             if( wxTranslateKeyEvent( keyEvent, tlw, wid, event ))
 407             {
 408                 keyEvent.SetEventObject( tlw );
 409                 keyEvent.SetId( tlw->GetId() );
 410                 keyEvent.SetEventType( wxEVT_CHAR_HOOK );
 411                 if( tlw->GetEventHandler()->ProcessEvent( keyEvent ) )
 412                 {
 413                     *continueToDispatch = False;
 414                     return;
 415                 }
 416                 else
 417                 {
 418                     // For simplicity, OnKeyDown is the same as OnChar
 419                     // TODO: filter modifier key presses from OnChar
 420                     keyEvent.SetEventType( wxEVT_KEY_DOWN );
 421
 422                     // Only process OnChar if OnKeyDown didn't swallow it
 423                     if( !tlw->GetEventHandler()->ProcessEvent( keyEvent ) )
 424                     {
 425                         keyEvent.SetEventType( wxEVT_CHAR );
 426                         tlw->GetEventHandler()->ProcessEvent( keyEvent );
 427                     }
 428                 }
 429             }
 430         }
 431     }
 432
 433     *continueToDispatch = True;
 434 }
 435