src/motif/toplevel.cpp

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