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 wxDialog::wxDialog()
 100 {
 101     m_title = "";
 102     m_sizeSet = FALSE;
 103     m_modalShowing = FALSE;
 104 }
 105
 106 wxDialog::wxDialog( wxWindow *parent,
 107                     wxWindowID id, const wxString &title,
 108                     const wxPoint &pos, const wxSize &size,
 109                     long style, const wxString &name )
 110 {
 111     m_modalShowing = FALSE;
 112     m_sizeSet = FALSE;
 113     Create( parent, id, title, pos, size, style, name );
 114 }
 115
 116 bool wxDialog::Create( wxWindow *parent,
 117                        wxWindowID id, const wxString &title,
 118                        const wxPoint &pos, const wxSize &size,
 119                        long style, const wxString &name )
 120 {
 121     wxTopLevelWindows.Append( this );
 122
 123     m_needParent = FALSE;
 124
 125     PreCreation( parent, id, pos, size, style, name );
 126
 127     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 128     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 129
 130     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 131
 132     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 133         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 134
 135     m_wxwindow = gtk_myfixed_new();
 136     gtk_widget_show( m_wxwindow );
 137     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 138
 139     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 140
 141     SetTitle( title );
 142
 143     if (m_parent) m_parent->AddChild( this );
 144
 145     PostCreation();
 146
 147     gtk_widget_realize( m_widget );
 148
 149     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 150         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 151
 152     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 153         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 154
 155     return TRUE;
 156 }
 157
 158 wxDialog::~wxDialog()
 159 {
 160     wxTopLevelWindows.DeleteObject( this );
 161
 162     if (wxTheApp->GetTopWindow() == this)
 163     {
 164         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 165     }
 166
 167     if (wxTopLevelWindows.Number() == 0)
 168     {
 169         wxTheApp->ExitMainLoop();
 170     }
 171 }
 172
 173 void wxDialog::SetTitle( const wxString& title )
 174 {
 175     m_title = title;
 176     if (m_title.IsNull()) m_title = "";
 177     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 178 }
 179
 180 wxString wxDialog::GetTitle() const
 181 {
 182     return (wxString&)m_title;
 183 }
 184
 185 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 186 {
 187     if (Validate()) TransferDataFromWindow();
 188 }
 189
 190 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 191 {
 192     if (IsModal())
 193     {
 194         EndModal(wxID_CANCEL);
 195     }
 196     else
 197     {
 198         SetReturnCode(wxID_CANCEL);
 199         this->Show(FALSE);
 200     }
 201 }
 202
 203 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 204 {
 205     if ( Validate() && TransferDataFromWindow())
 206     {
 207         if (IsModal())
 208         {
 209             EndModal(wxID_OK);
 210         }
 211         else
 212         {
 213             SetReturnCode(wxID_OK);
 214             this->Show(FALSE);
 215         }
 216     }
 217 }
 218
 219 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 220 {
 221     // yes
 222 }
 223
 224 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 225 {
 226     // We'll send a Cancel message by default,
 227     // which may close the dialog.
 228     // Check for looping if the Cancel event handler calls Close().
 229
 230     // Note that if a cancel button and handler aren't present in the dialog,
 231     // nothing will happen when you close the dialog via the window manager, or
 232     // via Close().
 233     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 234     // created on the stack.
 235     // However, this does mean that calling dialog->Close() won't delete the dialog
 236     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 237     // sure to destroy the dialog.
 238     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 239
 240     static wxList closing;
 241
 242     if (closing.Member(this))
 243         return;   // no loops
 244
 245     closing.Append(this);
 246
 247     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 248     cancelEvent.SetEventObject( this );
 249     GetEventHandler()->ProcessEvent(cancelEvent);
 250     closing.DeleteObject(this);
 251 }
 252
 253 bool wxDialog::Destroy()
 254 {
 255     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 256
 257     return TRUE;
 258 }
 259
 260 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 261 {
 262     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 263
 264     if (GetAutoLayout())
 265     {
 266         Layout();
 267     }
 268     else
 269     {
 270         /* no child: go out ! */
 271         if (!GetChildren().First()) return;
 272
 273         /* do we have exactly one child? */
 274         wxWindow *child = (wxWindow *) NULL;
 275         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 276         {
 277             wxWindow *win = (wxWindow *)node->Data();
 278             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 279             {
 280                 /* it's the second one: do nothing */
 281                 if (child) return;
 282                 child = win;
 283             }
 284         }
 285
 286         /* yes: set it's size to fill all the frame */
 287         int client_x, client_y;
 288         GetClientSize( &client_x, &client_y );
 289         child->SetSize( 1, 1, client_x-2, client_y);
 290     }
 291 }
 292
 293 void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
 294 {
 295     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 296     wxASSERT_MSG( (m_wxwindow != NULL), "invalid dialog" );
 297
 298     if (m_resizing) return; /* I don't like recursions */
 299     m_resizing = TRUE;
 300
 301     int old_x = m_x;
 302     int old_y = m_y;
 303     int old_width = m_width;
 304     int old_height = m_height;
 305
 306     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 307     {
 308         if (x != -1) m_x = x;
 309         if (y != -1) m_y = y;
 310         if (width != -1) m_width = width;
 311         if (height != -1) m_height = height;
 312     }
 313     else
 314     {
 315         m_x = x;
 316         m_y = y;
 317         m_width = width;
 318         m_height = height;
 319     }
 320
 321     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 322     {
 323         if (width == -1) m_width = 80;
 324     }
 325
 326     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 327     {
 328        if (height == -1) m_height = 26;
 329     }
 330
 331     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 332     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 333     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 334     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 335
 336     if ((m_x != -1) || (m_y != -1))
 337     {
 338         if ((m_x != old_x) || (m_y != old_y))
 339         {
 340             /* m_sizeSet = FALSE; */
 341             gtk_widget_set_uposition( m_widget, m_x, m_y );
 342         }
 343     }
 344
 345     if ((m_width != old_width) || (m_height != old_height))
 346     {
 347         m_sizeSet = FALSE;
 348     }
 349
 350     m_resizing = FALSE;
 351 }
 352
 353 void wxDialog::SetSize( int width, int height )
 354 {
 355     SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
 356 }
 357
 358 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 359 {
 360     // due to a bug in gtk, x,y are always 0
 361     // m_x = x;
 362     // m_y = y;
 363
 364     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 365     if (!m_wxwindow) return;
 366
 367     m_width = width;
 368     m_height = height;
 369
 370     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 371     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 372     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 373     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 374
 375     /* we actually set the size of a frame here and no-where else */
 376     gtk_widget_set_usize( m_widget, m_width, m_height );
 377
 378     m_sizeSet = TRUE;
 379
 380     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 381     event.SetEventObject( this );
 382     GetEventHandler()->ProcessEvent( event );
 383 }
 384
 385 void wxDialog::Centre( int direction )
 386 {
 387     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 388
 389     int x = 0;
 390     int y = 0;
 391
 392     if ((direction & wxHORIZONTAL) == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 393     if ((direction & wxVERTICAL) == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 394
 395     Move( x, y );
 396 }
 397
 398 void wxDialog::OnInternalIdle()
 399 {
 400     if (!m_sizeSet)
 401         GtkOnSize( m_x, m_y, m_width, m_height );
 402 }
 403
 404 bool wxDialog::Show( bool show )
 405 {
 406     if (!show && IsModal())
 407     {
 408         EndModal( wxID_CANCEL );
 409     }
 410
 411     if (show && !m_sizeSet)
 412     {
 413         /* by calling GtkOnSize here, we don't have to call
 414            either after showing the frame, which would entail
 415            much ugly flicker nor from within the size_allocate
 416            handler, because GTK 1.1.X forbids that. */
 417
 418         GtkOnSize( m_x, m_y, m_width, m_height );
 419     }
 420
 421     wxWindow::Show( show );
 422
 423     if (show) InitDialog();
 424
 425     return TRUE;
 426 }
 427
 428 bool wxDialog::IsModal() const
 429 {
 430     return m_modalShowing;
 431 }
 432
 433 void wxDialog::SetModal( bool WXUNUSED(flag) )
 434 {
 435 /*
 436   if (flag)
 437     m_windowStyle |= wxDIALOG_MODAL;
 438   else
 439     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 440 */
 441     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 442 }
 443
 444 int wxDialog::ShowModal()
 445 {
 446     if (IsModal())
 447     {
 448        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 449        return GetReturnCode();
 450     }
 451
 452     Show( TRUE );
 453
 454     m_modalShowing = TRUE;
 455
 456     gtk_grab_add( m_widget );
 457     gtk_main();
 458     gtk_grab_remove( m_widget );
 459
 460     return GetReturnCode();
 461 }
 462
 463 void wxDialog::EndModal( int retCode )
 464 {
 465     SetReturnCode( retCode );
 466
 467     if (!IsModal())
 468     {
 469         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 470         return;
 471     }
 472
 473     m_modalShowing = FALSE;
 474
 475     gtk_main_quit();
 476
 477     Show( FALSE );
 478 }
 479
 480 void wxDialog::InitDialog()
 481 {
 482     wxWindow::InitDialog();
 483 }
 484
 485 void wxDialog::SetIcon( const wxIcon &icon )
 486 {
 487     m_icon = icon;
 488     if (!icon.Ok()) return;
 489
 490     wxMask *mask = icon.GetMask();
 491     GdkBitmap *bm = (GdkBitmap *) NULL;
 492     if (mask) bm = mask->GetBitmap();
 493
 494     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 495 }