src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dialog.h"
  12 #endif
  13
  14 #include "wx/dialog.h"
  15 #include "wx/frame.h"
  16 #include "wx/app.h"
  17
  18 #include "gdk/gdk.h"
  19 #include "gtk/gtk.h"
  20 #include "wx/gtk/win_gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23
  24 extern wxList wxPendingDelete;
  25
  26 //-----------------------------------------------------------------------------
  27 // "delete_event"
  28 //-----------------------------------------------------------------------------
  29
  30 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
  31 {
  32 /*
  33     printf( "OnDelete from " );
  34     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  35         printf( win->GetClassInfo()->GetClassName() );
  36     printf( ".\n" );
  37 */
  38
  39     win->Close();
  40
  41     return TRUE;
  42 }
  43
  44 //-----------------------------------------------------------------------------
  45 // "size_allocate"
  46 //-----------------------------------------------------------------------------
  47
  48 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
  49 {
  50     if (!win->HasVMT()) return;
  51
  52 /*
  53     printf( "OnDialogResize from " );
  54     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  55         printf( win->GetClassInfo()->GetClassName() );
  56     printf( ".\n" );
  57 */
  58
  59    if ((win->m_width != alloc->width) || (win->m_height != alloc->height))
  60    {
  61        win->m_sizeSet = FALSE;
  62        win->m_width = alloc->width;
  63        win->m_height = alloc->height;
  64    }
  65 }
  66
  67 //-----------------------------------------------------------------------------
  68 // "configure_event"
  69 //-----------------------------------------------------------------------------
  70
  71 static gint gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
  72 {
  73     if (!win->HasVMT()) return FALSE;
  74
  75     win->m_x = event->x;
  76     win->m_y = event->y;
  77
  78     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
  79     mevent.SetEventObject( win );
  80     win->GetEventHandler()->ProcessEvent( mevent );
  81
  82     return FALSE;
  83 }
  84
  85 //-----------------------------------------------------------------------------
  86 // wxDialog
  87 //-----------------------------------------------------------------------------
  88
  89 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
  90     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  91     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  92     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  93     EVT_SIZE    (wxDialog::OnSize)
  94     EVT_CLOSE   (wxDialog::OnCloseWindow)
  95 END_EVENT_TABLE()
  96
  97 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
  98
  99 void wxDialog::Init()
 100 {
 101     m_sizeSet = FALSE;
 102     m_modalShowing = FALSE;
 103 }
 104
 105 wxDialog::wxDialog( wxWindow *parent,
 106                     wxWindowID id, const wxString &title,
 107                     const wxPoint &pos, const wxSize &size,
 108                     long style, const wxString &name )
 109 {
 110     Init();
 111
 112     Create( parent, id, title, pos, size, style, name );
 113 }
 114
 115 bool wxDialog::Create( wxWindow *parent,
 116                        wxWindowID id, const wxString &title,
 117                        const wxPoint &pos, const wxSize &size,
 118                        long style, const wxString &name )
 119 {
 120     wxTopLevelWindows.Append( this );
 121
 122     m_needParent = FALSE;
 123
 124     PreCreation( parent, id, pos, size, style, name );
 125
 126     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 127     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 128
 129     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 130
 131     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 132         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 133
 134     m_wxwindow = gtk_myfixed_new();
 135     gtk_widget_show( m_wxwindow );
 136     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 137
 138     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 139
 140     SetTitle( title );
 141
 142     if (m_parent) m_parent->AddChild( this );
 143
 144     PostCreation();
 145
 146     gtk_widget_realize( m_widget );
 147
 148     /* all this is for Motif Window Manager "hints" and is supposed to be
 149        recognized by other WM as well. not tested. */
 150     long decor = (long) GDK_DECOR_ALL;
 151     long func = (long) GDK_FUNC_ALL;
 152     if ((m_windowStyle & wxCAPTION) == 0)
 153         decor |= GDK_DECOR_TITLE;
 154 /*
 155     if ((m_windowStyle & wxMINIMIZE) == 0)
 156         func |= GDK_FUNC_MINIMIZE;
 157     if ((m_windowStyle & wxMAXIMIZE) == 0)
 158         func |= GDK_FUNC_MAXIMIZE;
 159 */
 160     if ((m_windowStyle & wxSYSTEM_MENU) == 0)
 161         decor |= GDK_DECOR_MENU;
 162     if ((m_windowStyle & wxMINIMIZE_BOX) == 0)
 163         decor |= GDK_DECOR_MINIMIZE;
 164     if ((m_windowStyle & wxMAXIMIZE_BOX) == 0)
 165         decor |= GDK_DECOR_MAXIMIZE;
 166     if ((m_windowStyle & wxRESIZE_BORDER) == 0)
 167         func |= GDK_FUNC_RESIZE;
 168     gdk_window_set_decorations(m_widget->window, (GdkWMDecoration)decor);
 169     gdk_window_set_functions(m_widget->window, (GdkWMFunction)func);
 170
 171     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 172         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 173
 174     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 175         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 176
 177     return TRUE;
 178 }
 179
 180 wxDialog::~wxDialog()
 181 {
 182     wxTopLevelWindows.DeleteObject( this );
 183
 184     if (wxTheApp->GetTopWindow() == this)
 185     {
 186         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 187     }
 188
 189     if (wxTopLevelWindows.Number() == 0)
 190     {
 191         wxTheApp->ExitMainLoop();
 192     }
 193 }
 194
 195 void wxDialog::SetTitle( const wxString& title )
 196 {
 197     m_title = title;
 198     if (m_title.IsNull()) m_title = "";
 199     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 200 }
 201
 202 wxString wxDialog::GetTitle() const
 203 {
 204     return (wxString&)m_title;
 205 }
 206
 207 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 208 {
 209     if (Validate()) TransferDataFromWindow();
 210 }
 211
 212 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 213 {
 214     if (IsModal())
 215     {
 216         EndModal(wxID_CANCEL);
 217     }
 218     else
 219     {
 220         SetReturnCode(wxID_CANCEL);
 221         this->Show(FALSE);
 222     }
 223 }
 224
 225 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 226 {
 227     if ( Validate() && TransferDataFromWindow())
 228     {
 229         if (IsModal())
 230         {
 231             EndModal(wxID_OK);
 232         }
 233         else
 234         {
 235             SetReturnCode(wxID_OK);
 236             this->Show(FALSE);
 237         }
 238     }
 239 }
 240
 241 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 242 {
 243     // yes
 244 }
 245
 246 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 247 {
 248     // We'll send a Cancel message by default,
 249     // which may close the dialog.
 250     // Check for looping if the Cancel event handler calls Close().
 251
 252     // Note that if a cancel button and handler aren't present in the dialog,
 253     // nothing will happen when you close the dialog via the window manager, or
 254     // via Close().
 255     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 256     // created on the stack.
 257     // However, this does mean that calling dialog->Close() won't delete the dialog
 258     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 259     // sure to destroy the dialog.
 260     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 261
 262     static wxList s_closing;
 263
 264     if (s_closing.Member(this))
 265         return;   // no loops
 266
 267     s_closing.Append(this);
 268
 269     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 270     cancelEvent.SetEventObject( this );
 271     GetEventHandler()->ProcessEvent(cancelEvent);
 272     s_closing.DeleteObject(this);
 273 }
 274
 275 bool wxDialog::Destroy()
 276 {
 277     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 278
 279     return TRUE;
 280 }
 281
 282 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 283 {
 284     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 285
 286     if (GetAutoLayout())
 287     {
 288         Layout();
 289     }
 290     else
 291     {
 292         /* no child: go out ! */
 293         if (!GetChildren().First()) return;
 294
 295         /* do we have exactly one child? */
 296         wxWindow *child = (wxWindow *) NULL;
 297         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 298         {
 299             wxWindow *win = (wxWindow *)node->Data();
 300             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 301             {
 302                 /* it's the second one: do nothing */
 303                 if (child) return;
 304                 child = win;
 305             }
 306         }
 307
 308         /* yes: set it's size to fill all the frame */
 309         int client_x, client_y;
 310         GetClientSize( &client_x, &client_y );
 311         child->SetSize( 1, 1, client_x-2, client_y);
 312     }
 313 }
 314
 315 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 316 {
 317     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 318     wxASSERT_MSG( (m_wxwindow != NULL), "invalid dialog" );
 319
 320     if (m_resizing) return; /* I don't like recursions */
 321     m_resizing = TRUE;
 322
 323     int old_x = m_x;
 324     int old_y = m_y;
 325     int old_width = m_width;
 326     int old_height = m_height;
 327
 328     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 329     {
 330         if (x != -1) m_x = x;
 331         if (y != -1) m_y = y;
 332         if (width != -1) m_width = width;
 333         if (height != -1) m_height = height;
 334     }
 335     else
 336     {
 337         m_x = x;
 338         m_y = y;
 339         m_width = width;
 340         m_height = height;
 341     }
 342
 343     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 344     {
 345         if (width == -1) m_width = 80;
 346     }
 347
 348     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 349     {
 350        if (height == -1) m_height = 26;
 351     }
 352
 353     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 354     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 355     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 356     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 357
 358     if ((m_x != -1) || (m_y != -1))
 359     {
 360         if ((m_x != old_x) || (m_y != old_y))
 361         {
 362             /* m_sizeSet = FALSE; */
 363             gtk_widget_set_uposition( m_widget, m_x, m_y );
 364         }
 365     }
 366
 367     if ((m_width != old_width) || (m_height != old_height))
 368     {
 369         m_sizeSet = FALSE;
 370     }
 371
 372     m_resizing = FALSE;
 373 }
 374
 375 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 376 {
 377     // due to a bug in gtk, x,y are always 0
 378     // m_x = x;
 379     // m_y = y;
 380
 381     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 382     if (!m_wxwindow) return;
 383
 384     m_width = width;
 385     m_height = height;
 386
 387     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 388     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 389     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 390     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 391
 392     /* we actually set the size of a frame here and no-where else */
 393     gtk_widget_set_usize( m_widget, m_width, m_height );
 394
 395     m_sizeSet = TRUE;
 396
 397     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 398     event.SetEventObject( this );
 399     GetEventHandler()->ProcessEvent( event );
 400 }
 401
 402 void wxDialog::Centre( int direction )
 403 {
 404     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 405
 406     int x = 0;
 407     int y = 0;
 408
 409     if ((direction & wxHORIZONTAL) == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 410     if ((direction & wxVERTICAL) == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 411
 412     Move( x, y );
 413 }
 414
 415 void wxDialog::OnInternalIdle()
 416 {
 417     if (!m_sizeSet)
 418         GtkOnSize( m_x, m_y, m_width, m_height );
 419 }
 420
 421 bool wxDialog::Show( bool show )
 422 {
 423     if (!show && IsModal())
 424     {
 425         EndModal( wxID_CANCEL );
 426     }
 427
 428     if (show && !m_sizeSet)
 429     {
 430         /* by calling GtkOnSize here, we don't have to call
 431            either after showing the frame, which would entail
 432            much ugly flicker nor from within the size_allocate
 433            handler, because GTK 1.1.X forbids that. */
 434
 435         GtkOnSize( m_x, m_y, m_width, m_height );
 436     }
 437
 438     wxWindow::Show( show );
 439
 440     if (show) InitDialog();
 441
 442     return TRUE;
 443 }
 444
 445 bool wxDialog::IsModal() const
 446 {
 447     return m_modalShowing;
 448 }
 449
 450 void wxDialog::SetModal( bool WXUNUSED(flag) )
 451 {
 452 /*
 453   if (flag)
 454     m_windowStyle |= wxDIALOG_MODAL;
 455   else
 456     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 457 */
 458     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 459 }
 460
 461 int wxDialog::ShowModal()
 462 {
 463     if (IsModal())
 464     {
 465        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 466        return GetReturnCode();
 467     }
 468
 469     Show( TRUE );
 470
 471     m_modalShowing = TRUE;
 472
 473     gtk_grab_add( m_widget );
 474     gtk_main();
 475     gtk_grab_remove( m_widget );
 476
 477     return GetReturnCode();
 478 }
 479
 480 void wxDialog::EndModal( int retCode )
 481 {
 482     SetReturnCode( retCode );
 483
 484     if (!IsModal())
 485     {
 486         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 487         return;
 488     }
 489
 490     m_modalShowing = FALSE;
 491
 492     gtk_main_quit();
 493
 494     Show( FALSE );
 495 }
 496
 497 void wxDialog::InitDialog()
 498 {
 499     wxWindow::InitDialog();
 500 }
 501
 502 void wxDialog::SetIcon( const wxIcon &icon )
 503 {
 504     m_icon = icon;
 505     if (!icon.Ok()) return;
 506
 507     wxMask *mask = icon.GetMask();
 508     GdkBitmap *bm = (GdkBitmap *) NULL;
 509     if (mask) bm = mask->GetBitmap();
 510
 511     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 512 }