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 #include "wx/toplevel.h"
  25 #include "wx/app.h"
  26
  27 #ifdef __VMS__
  28 #define XtDisplay XTDISPLAY
  29 #define XtParent XTPARENT
  30 #define XtScreen XTSCREEN
  31 #define XtWindow XTWINDOW
  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     if ( (GetWindowStyleFlag() & wxDIALOG_MODAL) != wxDIALOG_MODAL )
  70         wxModelessWindows.DeleteObject(this);
  71
  72     m_icons.m_icons.Empty();
  73
  74     DestroyChildren();
  75
  76     // MessageDialog and FileDialog do not have a client widget
  77     if( GetClientWidget() )
  78     {
  79         XtRemoveEventHandler( (Widget)GetClientWidget(),
  80                               ButtonPressMask | ButtonReleaseMask |
  81                               PointerMotionMask | KeyPressMask,
  82                               FALSE,
  83                               wxTLWEventHandler,
  84                               (XtPointer)this );
  85     }
  86 }
  87
  88 wxTopLevelWindowMotif::~wxTopLevelWindowMotif()
  89 {
  90     SetMainWidget( (WXWidget)0 );
  91 }
  92
  93 void wxTopLevelWindowMotif::Init()
  94 {
  95     m_isShown = FALSE;
  96 }
  97
  98 bool wxTopLevelWindowMotif::Create( wxWindow *parent, wxWindowID id,
  99                                     const wxString& title,
 100                                     const wxPoint& pos,
 101                                     const wxSize& size,
 102                                     long style,
 103                                     const wxString& name )
 104 {
 105     SetName(name);
 106     m_windowStyle = style;
 107
 108     if ( parent )
 109         parent->AddChild(this);
 110
 111     wxTopLevelWindows.Append(this);
 112
 113     m_windowId = ( id > -1 ) ? id : NewControlId();
 114
 115     bool retval = DoCreate( 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 & wxRESIZE_BORDER )
 150             decor |= MWM_DECOR_RESIZEH;
 151         if( m_windowStyle & wxSYSTEM_MENU )
 152             decor |= MWM_DECOR_MENU;
 153         if( ( m_windowStyle & wxCAPTION ) ||
 154             ( m_windowStyle & wxTINY_CAPTION_HORIZ ) ||
 155             ( m_windowStyle & wxTINY_CAPTION_VERT ) )
 156             decor |= MWM_DECOR_TITLE;
 157         if( m_windowStyle & wxTHICK_FRAME )
 158             decor |= MWM_DECOR_BORDER;
 159         if( m_windowStyle & wxMINIMIZE_BOX )
 160             decor |= MWM_DECOR_MINIMIZE;
 161         if( m_windowStyle & wxMAXIMIZE_BOX )
 162             decor |= MWM_DECOR_MAXIMIZE;
 163
 164         XtVaSetValues( shell,
 165                        XmNmwmDecorations, decor,
 166                        NULL );
 167     }
 168     else
 169     {
 170         // This allows non-Motif window managers to support at least the
 171         // no-decorations case.
 172         if( ( m_windowStyle & wxCAPTION ) != wxCAPTION )
 173             XtVaSetValues( shell,
 174                            XmNoverrideRedirect, TRUE,
 175                            NULL );
 176     }
 177
 178     XtAddEventHandler( (Widget)GetClientWidget(),
 179                        ButtonPressMask | ButtonReleaseMask |
 180                        PointerMotionMask | KeyPressMask,
 181                        FALSE,
 182                        wxTLWEventHandler,
 183                        (XtPointer)this );
 184
 185     return retval;
 186 }
 187
 188 void wxTopLevelWindowMotif::Raise()
 189 {
 190     Widget top = (Widget) GetTopWidget();
 191     Window parent_window = XtWindow( top ),
 192         next_parent   = XtWindow( top ),
 193         root          = RootWindowOfScreen( XtScreen( top ) );
 194     // search for the parent that is child of ROOT, because the WM may
 195     // reparent twice and notify only the next parent (like FVWM)
 196     while( next_parent != root )
 197     {
 198         Window *theChildren;
 199         unsigned int n;
 200
 201         parent_window = next_parent;
 202         XQueryTree( XtDisplay( top ), parent_window, &root,
 203             &next_parent, &theChildren, &n );
 204         XFree( theChildren ); // not needed
 205     }
 206     XRaiseWindow( XtDisplay( top ), parent_window );
 207 }
 208
 209 void wxTopLevelWindowMotif::Lower()
 210 {
 211     Widget top = (Widget) GetTopWidget();
 212     Window parent_window = XtWindow( top ),
 213         next_parent   = XtWindow( top ),
 214         root          = RootWindowOfScreen( XtScreen( top ) );
 215     // search for the parent that is child of ROOT, because the WM may
 216     // reparent twice and notify only the next parent (like FVWM)
 217     while( next_parent != root )
 218     {
 219         Window *theChildren;
 220         unsigned int n;
 221
 222         parent_window = next_parent;
 223         XQueryTree( XtDisplay( top ), parent_window, &root,
 224             &next_parent, &theChildren, &n );
 225         XFree( theChildren ); // not needed
 226     }
 227     XLowerWindow( XtDisplay( top ), parent_window );
 228 }
 229
 230 static inline Widget GetShell( const wxTopLevelWindowMotif* tlw )
 231 {
 232     Widget main = (Widget) tlw->GetMainWidget();
 233     if( !main ) return (Widget) NULL;
 234
 235     return XtParent( main );
 236 }
 237
 238 WXWidget wxTopLevelWindowMotif::GetShellWidget() const
 239 {
 240     return (WXWidget) GetShell( this );
 241 }
 242
 243 bool wxTopLevelWindowMotif::ShowFullScreen( bool show,
 244                                             long style )
 245 {
 246     // TODO, see wxGTK
 247     return FALSE;
 248 }
 249
 250 bool wxTopLevelWindowMotif::IsFullScreen() const
 251 {
 252     // TODO, see wxGTK
 253     return FALSE;
 254 }
 255
 256 void wxTopLevelWindowMotif::Restore()
 257 {
 258     Widget shell = GetShell( this );
 259
 260     if( shell )
 261         XtVaSetValues( shell,
 262                        XmNiconic, FALSE,
 263                        NULL );
 264 }
 265
 266 void wxTopLevelWindowMotif::Iconize( bool iconize )
 267 {
 268     Widget shell = GetShell( this );
 269     if( !shell ) return;
 270
 271     if( !iconize )
 272         Show( TRUE );
 273
 274     XtVaSetValues( shell,
 275                    XmNiconic, (Boolean)iconize,
 276                    NULL );
 277 }
 278
 279 bool wxTopLevelWindowMotif::IsIconized() const
 280 {
 281     Widget shell = GetShell( this );
 282
 283     if( !shell )
 284         return FALSE;
 285
 286     Boolean iconic;
 287     XtVaGetValues( shell,
 288                    XmNiconic, &iconic,
 289                    NULL );
 290
 291     return iconic;
 292 }
 293
 294 void wxTopLevelWindowMotif::Maximize( bool maximize )
 295 {
 296     Show( TRUE );
 297
 298     if( maximize )
 299         Restore();
 300 }
 301
 302 bool wxTopLevelWindowMotif::IsMaximized() const
 303 {
 304     return FALSE;
 305 }
 306
 307 void wxTopLevelWindowMotif::SetSizeHints( int minW, int minH,
 308                                           int maxW, int maxH,
 309                                           int incW, int incH )
 310 {
 311     wxTopLevelWindowBase::SetSizeHints( minW, minH, maxW, maxH, incW, incH );
 312
 313     int count = 0;
 314     Arg args[6];
 315
 316     if( minW > -1 ) { XtSetArg( args[count], XmNminWidth,  minW ); ++count; }
 317     if( minH > -1 ) { XtSetArg( args[count], XmNminHeight, minH ); ++count; }
 318     if( maxW > -1 ) { XtSetArg( args[count], XmNmaxWidth,  maxW ); ++count; }
 319     if( maxH > -1 ) { XtSetArg( args[count], XmNmaxHeight, maxH ); ++count; }
 320     if( incW > -1 ) { XtSetArg( args[count], XmNwidthInc,  incW ); ++count; }
 321     if( incH > -1 ) { XtSetArg( args[count], XmNheightInc, incH ); ++count; }
 322
 323     XtSetValues( (Widget)GetShellWidget(), args, count );
 324 }
 325
 326 bool wxTopLevelWindowMotif::SetShape( const wxRegion& region )
 327 {
 328     return wxDoSetShape( (Display*)GetXDisplay(),
 329                          XtWindow( (Widget)GetShellWidget() ),
 330                          region );
 331 }
 332
 333 // ---------------------------------------------------------------------------
 334 // Callback definition
 335 // ---------------------------------------------------------------------------
 336
 337 // Handle a close event from the window manager
 338 static void wxCloseTLWCallback( Widget WXUNUSED(widget), XtPointer client_data,
 339                                 XmAnyCallbackStruct *WXUNUSED(cbs) )
 340 {
 341     wxTopLevelWindowMotif* tlw = (wxTopLevelWindowMotif*)client_data;
 342     wxCloseEvent closeEvent( wxEVT_CLOSE_WINDOW, tlw->GetId() );
 343     closeEvent.SetEventObject( tlw );
 344
 345     // May delete the dialog (with delayed deletion)
 346     tlw->GetEventHandler()->ProcessEvent(closeEvent);
 347 }
 348
 349 void wxTLWEventHandler( Widget wid,
 350                         XtPointer WXUNUSED(client_data),
 351                         XEvent* event,
 352                         Boolean* continueToDispatch)
 353 {
 354     wxTopLevelWindowMotif* tlw =
 355         (wxTopLevelWindowMotif*)wxGetWindowFromTable( wid );
 356
 357     if( tlw )
 358     {
 359         wxMouseEvent wxevent( wxEVT_NULL );
 360
 361         if( wxTranslateMouseEvent( wxevent, tlw, wid, event ) )
 362         {
 363             wxevent.SetEventObject( tlw );
 364             wxevent.SetId( tlw->GetId() );
 365             tlw->GetEventHandler()->ProcessEvent( wxevent );
 366         }
 367         else
 368         {
 369             // An attempt to implement OnCharHook by calling OnCharHook first;
 370             // if this returns TRUE, set continueToDispatch to False
 371             // (don't continue processing).
 372             // Otherwise set it to True and call OnChar.
 373             wxKeyEvent keyEvent( wxEVT_CHAR );
 374             if( wxTranslateKeyEvent( keyEvent, tlw, wid, event ))
 375             {
 376                 keyEvent.SetEventObject( tlw );
 377                 keyEvent.SetId( tlw->GetId() );
 378                 keyEvent.SetEventType( wxEVT_CHAR_HOOK );
 379                 if( tlw->GetEventHandler()->ProcessEvent( keyEvent ) )
 380                 {
 381                     *continueToDispatch = False;
 382                     return;
 383                 }
 384                 else
 385                 {
 386                     // For simplicity, OnKeyDown is the same as OnChar
 387                     // TODO: filter modifier key presses from OnChar
 388                     keyEvent.SetEventType( wxEVT_KEY_DOWN );
 389
 390                     // Only process OnChar if OnKeyDown didn't swallow it
 391                     if( !tlw->GetEventHandler()->ProcessEvent( keyEvent ) )
 392                     {
 393                         keyEvent.SetEventType( wxEVT_CHAR );
 394                         tlw->GetEventHandler()->ProcessEvent( keyEvent );
 395                     }
 396                 }
 397             }
 398         }
 399     }
 400
 401     *continueToDispatch = True;
 402 }
 403