src/gtk1/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       long decor = (long) GDK_DECOR_ALL;
 149       long func = (long) GDK_FUNC_ALL;
 150
 151       if ((m_windowStyle & wxCAPTION) == 0)
 152         decor |= GDK_DECOR_TITLE;
 153       if ((m_windowStyle & wxMINIMIZE) == 0)
 154         func |= GDK_FUNC_MINIMIZE;
 155       if ((m_windowStyle & wxMAXIMIZE) == 0)
 156         func |= GDK_FUNC_MAXIMIZE;
 157       if ((m_windowStyle & wxSYSTEM_MENU) == 0)
 158         decor |= GDK_DECOR_MENU;
 159       if ((m_windowStyle & wxMINIMIZE_BOX) == 0)
 160         decor |= GDK_DECOR_MINIMIZE;
 161       if ((m_windowStyle & wxMAXIMIZE_BOX) == 0)
 162         decor |= GDK_DECOR_MAXIMIZE;
 163       if ((m_windowStyle & wxRESIZE_BORDER) == 0)
 164         func |= GDK_FUNC_RESIZE;
 165
 166       gdk_window_set_decorations(m_widget->window, (GdkWMDecoration)decor);
 167       gdk_window_set_functions(m_widget->window, (GdkWMFunction)func);
 168
 169     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 170         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 171
 172     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 173         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 174
 175     return TRUE;
 176 }
 177
 178 wxDialog::~wxDialog()
 179 {
 180     wxTopLevelWindows.DeleteObject( this );
 181
 182     if (wxTheApp->GetTopWindow() == this)
 183     {
 184         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 185     }
 186
 187     if (wxTopLevelWindows.Number() == 0)
 188     {
 189         wxTheApp->ExitMainLoop();
 190     }
 191 }
 192
 193 void wxDialog::SetTitle( const wxString& title )
 194 {
 195     m_title = title;
 196     if (m_title.IsNull()) m_title = "";
 197     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 198 }
 199
 200 wxString wxDialog::GetTitle() const
 201 {
 202     return (wxString&)m_title;
 203 }
 204
 205 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 206 {
 207     if (Validate()) TransferDataFromWindow();
 208 }
 209
 210 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 211 {
 212     if (IsModal())
 213     {
 214         EndModal(wxID_CANCEL);
 215     }
 216     else
 217     {
 218         SetReturnCode(wxID_CANCEL);
 219         this->Show(FALSE);
 220     }
 221 }
 222
 223 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 224 {
 225     if ( Validate() && TransferDataFromWindow())
 226     {
 227         if (IsModal())
 228         {
 229             EndModal(wxID_OK);
 230         }
 231         else
 232         {
 233             SetReturnCode(wxID_OK);
 234             this->Show(FALSE);
 235         }
 236     }
 237 }
 238
 239 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 240 {
 241     // yes
 242 }
 243
 244 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 245 {
 246     // We'll send a Cancel message by default,
 247     // which may close the dialog.
 248     // Check for looping if the Cancel event handler calls Close().
 249
 250     // Note that if a cancel button and handler aren't present in the dialog,
 251     // nothing will happen when you close the dialog via the window manager, or
 252     // via Close().
 253     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 254     // created on the stack.
 255     // However, this does mean that calling dialog->Close() won't delete the dialog
 256     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 257     // sure to destroy the dialog.
 258     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 259
 260     static wxList closing;
 261
 262     if (closing.Member(this))
 263         return;   // no loops
 264
 265     closing.Append(this);
 266
 267     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 268     cancelEvent.SetEventObject( this );
 269     GetEventHandler()->ProcessEvent(cancelEvent);
 270     closing.DeleteObject(this);
 271 }
 272
 273 bool wxDialog::Destroy()
 274 {
 275     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 276
 277     return TRUE;
 278 }
 279
 280 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 281 {
 282     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 283
 284     if (GetAutoLayout())
 285     {
 286         Layout();
 287     }
 288     else
 289     {
 290         /* no child: go out ! */
 291         if (!GetChildren().First()) return;
 292
 293         /* do we have exactly one child? */
 294         wxWindow *child = (wxWindow *) NULL;
 295         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 296         {
 297             wxWindow *win = (wxWindow *)node->Data();
 298             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 299             {
 300                 /* it's the second one: do nothing */
 301                 if (child) return;
 302                 child = win;
 303             }
 304         }
 305
 306         /* yes: set it's size to fill all the frame */
 307         int client_x, client_y;
 308         GetClientSize( &client_x, &client_y );
 309         child->SetSize( 1, 1, client_x-2, client_y);
 310     }
 311 }
 312
 313 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 314 {
 315     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 316     wxASSERT_MSG( (m_wxwindow != NULL), "invalid dialog" );
 317
 318     if (m_resizing) return; /* I don't like recursions */
 319     m_resizing = TRUE;
 320
 321     int old_x = m_x;
 322     int old_y = m_y;
 323     int old_width = m_width;
 324     int old_height = m_height;
 325
 326     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 327     {
 328         if (x != -1) m_x = x;
 329         if (y != -1) m_y = y;
 330         if (width != -1) m_width = width;
 331         if (height != -1) m_height = height;
 332     }
 333     else
 334     {
 335         m_x = x;
 336         m_y = y;
 337         m_width = width;
 338         m_height = height;
 339     }
 340
 341     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 342     {
 343         if (width == -1) m_width = 80;
 344     }
 345
 346     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 347     {
 348        if (height == -1) m_height = 26;
 349     }
 350
 351     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 352     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 353     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 354     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 355
 356     if ((m_x != -1) || (m_y != -1))
 357     {
 358         if ((m_x != old_x) || (m_y != old_y))
 359         {
 360             /* m_sizeSet = FALSE; */
 361             gtk_widget_set_uposition( m_widget, m_x, m_y );
 362         }
 363     }
 364
 365     if ((m_width != old_width) || (m_height != old_height))
 366     {
 367         m_sizeSet = FALSE;
 368     }
 369
 370     m_resizing = FALSE;
 371 }
 372
 373 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 374 {
 375     // due to a bug in gtk, x,y are always 0
 376     // m_x = x;
 377     // m_y = y;
 378
 379     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 380     if (!m_wxwindow) return;
 381
 382     m_width = width;
 383     m_height = height;
 384
 385     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 386     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 387     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 388     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 389
 390     /* we actually set the size of a frame here and no-where else */
 391     gtk_widget_set_usize( m_widget, m_width, m_height );
 392
 393     m_sizeSet = TRUE;
 394
 395     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 396     event.SetEventObject( this );
 397     GetEventHandler()->ProcessEvent( event );
 398 }
 399
 400 void wxDialog::Centre( int direction )
 401 {
 402     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 403
 404     int x = 0;
 405     int y = 0;
 406
 407     if ((direction & wxHORIZONTAL) == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 408     if ((direction & wxVERTICAL) == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 409
 410     Move( x, y );
 411 }
 412
 413 void wxDialog::OnInternalIdle()
 414 {
 415     if (!m_sizeSet)
 416         GtkOnSize( m_x, m_y, m_width, m_height );
 417 }
 418
 419 bool wxDialog::Show( bool show )
 420 {
 421     if (!show && IsModal())
 422     {
 423         EndModal( wxID_CANCEL );
 424     }
 425
 426     if (show && !m_sizeSet)
 427     {
 428         /* by calling GtkOnSize here, we don't have to call
 429            either after showing the frame, which would entail
 430            much ugly flicker nor from within the size_allocate
 431            handler, because GTK 1.1.X forbids that. */
 432
 433         GtkOnSize( m_x, m_y, m_width, m_height );
 434     }
 435
 436     wxWindow::Show( show );
 437
 438     if (show) InitDialog();
 439
 440     return TRUE;
 441 }
 442
 443 bool wxDialog::IsModal() const
 444 {
 445     return m_modalShowing;
 446 }
 447
 448 void wxDialog::SetModal( bool WXUNUSED(flag) )
 449 {
 450 /*
 451   if (flag)
 452     m_windowStyle |= wxDIALOG_MODAL;
 453   else
 454     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 455 */
 456     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 457 }
 458
 459 int wxDialog::ShowModal()
 460 {
 461     if (IsModal())
 462     {
 463        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 464        return GetReturnCode();
 465     }
 466
 467     Show( TRUE );
 468
 469     m_modalShowing = TRUE;
 470
 471     gtk_grab_add( m_widget );
 472     gtk_main();
 473     gtk_grab_remove( m_widget );
 474
 475     return GetReturnCode();
 476 }
 477
 478 void wxDialog::EndModal( int retCode )
 479 {
 480     SetReturnCode( retCode );
 481
 482     if (!IsModal())
 483     {
 484         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 485         return;
 486     }
 487
 488     m_modalShowing = FALSE;
 489
 490     gtk_main_quit();
 491
 492     Show( FALSE );
 493 }
 494
 495 void wxDialog::InitDialog()
 496 {
 497     wxWindow::InitDialog();
 498 }
 499
 500 void wxDialog::SetIcon( const wxIcon &icon )
 501 {
 502     m_icon = icon;
 503     if (!icon.Ok()) return;
 504
 505     wxMask *mask = icon.GetMask();
 506     GdkBitmap *bm = (GdkBitmap *) NULL;
 507     if (mask) bm = mask->GetBitmap();
 508
 509     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 510 }