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