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 // "realize" from m_widget
  87 //-----------------------------------------------------------------------------
  88
  89 /* we cannot MWM hints and icons before the widget has been realized,
  90    so we do this directly after realization */
  91
  92 static gint
  93 gtk_dialog_realized_callback( GtkWidget *widget, wxDialog *win )
  94 {
  95     /* all this is for Motif Window Manager "hints" and is supposed to be
  96        recognized by other WM as well. not tested. */
  97     long decor = (long) GDK_DECOR_ALL;
  98     long func = (long) GDK_FUNC_ALL;
  99
 100     if ((win->m_windowStyle & wxCAPTION) == 0)
 101         decor |= GDK_DECOR_TITLE;
 102 /*  if ((win->m_windowStyle & wxMINIMIZE) == 0)
 103         func |= GDK_FUNC_MINIMIZE;
 104     if ((win->m_windowStyle & wxMAXIMIZE) == 0)
 105         func |= GDK_FUNC_MAXIMIZE;            */
 106     if ((win->m_windowStyle & wxSYSTEM_MENU) == 0)
 107         decor |= GDK_DECOR_MENU;
 108     if ((win->m_windowStyle & wxMINIMIZE_BOX) == 0)
 109         decor |= GDK_DECOR_MINIMIZE;
 110     if ((win->m_windowStyle & wxMAXIMIZE_BOX) == 0)
 111         decor |= GDK_DECOR_MAXIMIZE;
 112     if ((win->m_windowStyle & wxRESIZE_BORDER) == 0)
 113         func |= GDK_FUNC_RESIZE;
 114
 115     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
 116     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
 117
 118     /* GTK's shrinking/growing policy */
 119     if ((win->m_windowStyle & wxRESIZE_BORDER) == 0)
 120         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 0, 0, 1);
 121     else
 122         gtk_window_set_policy(GTK_WINDOW(win->m_widget), 1, 1, 1);
 123
 124     /* reset the icon */
 125     if (win->m_icon != wxNullIcon)
 126     {
 127         wxIcon icon( win->m_icon );
 128         win->m_icon = wxNullIcon;
 129         win->SetIcon( icon );
 130     }
 131
 132     return FALSE;
 133 }
 134
 135 //-----------------------------------------------------------------------------
 136 // "map" from m_widget
 137 //-----------------------------------------------------------------------------
 138
 139 static gint
 140 gtk_dialog_map_callback( GtkWidget *widget, wxDialog *win )
 141 {
 142     gtk_widget_set_uposition( widget, win->m_x, win->m_y );
 143
 144     return FALSE;
 145 }
 146
 147 //-----------------------------------------------------------------------------
 148 // wxDialog
 149 //-----------------------------------------------------------------------------
 150
 151 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
 152     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
 153     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
 154     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
 155     EVT_SIZE    (wxDialog::OnSize)
 156     EVT_CLOSE   (wxDialog::OnCloseWindow)
 157 END_EVENT_TABLE()
 158
 159 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
 160
 161 void wxDialog::Init()
 162 {
 163     m_sizeSet = FALSE;
 164     m_modalShowing = FALSE;
 165 }
 166
 167 wxDialog::wxDialog( wxWindow *parent,
 168                     wxWindowID id, const wxString &title,
 169                     const wxPoint &pos, const wxSize &size,
 170                     long style, const wxString &name )
 171 {
 172     Init();
 173
 174     Create( parent, id, title, pos, size, style, name );
 175 }
 176
 177 bool wxDialog::Create( wxWindow *parent,
 178                        wxWindowID id, const wxString &title,
 179                        const wxPoint &pos, const wxSize &size,
 180                        long style, const wxString &name )
 181 {
 182     wxTopLevelWindows.Append( this );
 183
 184     m_needParent = FALSE;
 185
 186     PreCreation( parent, id, pos, size, style, name );
 187
 188     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 189     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 190
 191     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 192
 193     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 194         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 195
 196     m_wxwindow = gtk_myfixed_new();
 197     gtk_widget_show( m_wxwindow );
 198     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 199
 200     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 201
 202     SetTitle( title );
 203
 204     if (m_parent) m_parent->AddChild( this );
 205
 206     PostCreation();
 207
 208     /*  we cannot set MWM hints  before the widget has
 209         been realized, so we do this directly after realization */
 210     gtk_signal_connect( GTK_OBJECT(m_widget), "realize",
 211                         GTK_SIGNAL_FUNC(gtk_dialog_realized_callback), (gpointer) this );
 212
 213     /* we set the position of the window after the map event. setting it
 214        before has no effect (with KWM) */
 215     gtk_signal_connect( GTK_OBJECT(m_widget), "map",
 216                         GTK_SIGNAL_FUNC(gtk_dialog_map_callback), (gpointer) this );
 217
 218     /* the user resized the frame by dragging etc. */
 219     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 220         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 221
 222     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 223         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 224
 225     return TRUE;
 226 }
 227
 228 wxDialog::~wxDialog()
 229 {
 230     wxTopLevelWindows.DeleteObject( this );
 231
 232     if (wxTheApp->GetTopWindow() == this)
 233     {
 234         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 235     }
 236
 237     if (wxTopLevelWindows.Number() == 0)
 238     {
 239         wxTheApp->ExitMainLoop();
 240     }
 241 }
 242
 243 void wxDialog::SetTitle( const wxString& title )
 244 {
 245     m_title = title;
 246     if (m_title.IsNull()) m_title = _T("");
 247     gtk_window_set_title( GTK_WINDOW(m_widget), m_title.mbc_str() );
 248 }
 249
 250 wxString wxDialog::GetTitle() const
 251 {
 252     return (wxString&)m_title;
 253 }
 254
 255 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 256 {
 257     if (Validate()) TransferDataFromWindow();
 258 }
 259
 260 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 261 {
 262     if (IsModal())
 263     {
 264         EndModal(wxID_CANCEL);
 265     }
 266     else
 267     {
 268         SetReturnCode(wxID_CANCEL);
 269         this->Show(FALSE);
 270     }
 271 }
 272
 273 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 274 {
 275     if ( Validate() && TransferDataFromWindow())
 276     {
 277         if (IsModal())
 278         {
 279             EndModal(wxID_OK);
 280         }
 281         else
 282         {
 283             SetReturnCode(wxID_OK);
 284             this->Show(FALSE);
 285         }
 286     }
 287 }
 288
 289 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 290 {
 291     // yes
 292 }
 293
 294 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 295 {
 296     // We'll send a Cancel message by default,
 297     // which may close the dialog.
 298     // Check for looping if the Cancel event handler calls Close().
 299
 300     // Note that if a cancel button and handler aren't present in the dialog,
 301     // nothing will happen when you close the dialog via the window manager, or
 302     // via Close().
 303     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 304     // created on the stack.
 305     // However, this does mean that calling dialog->Close() won't delete the dialog
 306     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 307     // sure to destroy the dialog.
 308     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 309
 310     static wxList s_closing;
 311
 312     if (s_closing.Member(this))
 313         return;   // no loops
 314
 315     s_closing.Append(this);
 316
 317     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 318     cancelEvent.SetEventObject( this );
 319     GetEventHandler()->ProcessEvent(cancelEvent);
 320     s_closing.DeleteObject(this);
 321 }
 322
 323 bool wxDialog::Destroy()
 324 {
 325     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 326
 327     return TRUE;
 328 }
 329
 330 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 331 {
 332     wxASSERT_MSG( (m_widget != NULL), _T("invalid dialog") );
 333
 334     if (GetAutoLayout())
 335     {
 336         Layout();
 337     }
 338     else
 339     {
 340         /* no child: go out ! */
 341         if (!GetChildren().First()) return;
 342
 343         /* do we have exactly one child? */
 344         wxWindow *child = (wxWindow *) NULL;
 345         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 346         {
 347             wxWindow *win = (wxWindow *)node->Data();
 348             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 349             {
 350                 /* it's the second one: do nothing */
 351                 if (child) return;
 352                 child = win;
 353             }
 354         }
 355
 356         /* yes: set it's size to fill all the frame */
 357         int client_x, client_y;
 358         GetClientSize( &client_x, &client_y );
 359         child->SetSize( 1, 1, client_x-2, client_y);
 360     }
 361 }
 362
 363 void wxDialog::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 364 {
 365     wxASSERT_MSG( (m_widget != NULL), _T("invalid dialog") );
 366     wxASSERT_MSG( (m_wxwindow != NULL), _T("invalid dialog") );
 367
 368     if (m_resizing) return; /* I don't like recursions */
 369     m_resizing = TRUE;
 370
 371     int old_x = m_x;
 372     int old_y = m_y;
 373     int old_width = m_width;
 374     int old_height = m_height;
 375
 376     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 377     {
 378         if (x != -1) m_x = x;
 379         if (y != -1) m_y = y;
 380         if (width != -1) m_width = width;
 381         if (height != -1) m_height = height;
 382     }
 383     else
 384     {
 385         m_x = x;
 386         m_y = y;
 387         m_width = width;
 388         m_height = height;
 389     }
 390
 391     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 392     {
 393         if (width == -1) m_width = 80;
 394     }
 395
 396     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 397     {
 398        if (height == -1) m_height = 26;
 399     }
 400
 401     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 402     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 403     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 404     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 405
 406     if ((m_x != -1) || (m_y != -1))
 407     {
 408         if ((m_x != old_x) || (m_y != old_y))
 409         {
 410             /* we set the position here and when showing the dialog
 411                for the first time in idle time */
 412             gtk_widget_set_uposition( m_widget, m_x, m_y );
 413         }
 414     }
 415
 416     if ((m_width != old_width) || (m_height != old_height))
 417     {
 418         /* actual resizing is deferred to GtkOnSize in idle time and
 419            when showing the dialog */
 420         m_sizeSet = FALSE;
 421     }
 422
 423     m_resizing = FALSE;
 424 }
 425
 426 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 427 {
 428     // due to a bug in gtk, x,y are always 0
 429     // m_x = x;
 430     // m_y = y;
 431
 432     if ((m_height == height) && (m_width == width) && (m_sizeSet)) return;
 433     if (!m_wxwindow) return;
 434
 435     m_width = width;
 436     m_height = height;
 437
 438     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 439     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 440     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 441     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 442
 443     /* we actually set the size of a frame here and no-where else */
 444     gtk_widget_set_usize( m_widget, m_width, m_height );
 445
 446     m_sizeSet = TRUE;
 447
 448     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 449     event.SetEventObject( this );
 450     GetEventHandler()->ProcessEvent( event );
 451 }
 452
 453 void wxDialog::Centre( int direction )
 454 {
 455     wxASSERT_MSG( (m_widget != NULL), _T("invalid dialog") );
 456
 457     int x = 0;
 458     int y = 0;
 459
 460     if ((direction & wxHORIZONTAL) == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 461     if ((direction & wxVERTICAL) == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 462
 463     Move( x, y );
 464 }
 465
 466 void wxDialog::OnInternalIdle()
 467 {
 468     if (!m_sizeSet && GTK_WIDGET_REALIZED(m_wxwindow))
 469         GtkOnSize( m_x, m_y, m_width, m_height );
 470 }
 471
 472 bool wxDialog::Show( bool show )
 473 {
 474     if (!show && IsModal())
 475     {
 476         EndModal( wxID_CANCEL );
 477     }
 478
 479     if (show && !m_sizeSet)
 480     {
 481         /* by calling GtkOnSize here, we don't have to call
 482            either after showing the frame, which would entail
 483            much ugly flicker nor from within the size_allocate
 484            handler, because GTK 1.1.X forbids that. */
 485
 486         GtkOnSize( m_x, m_y, m_width, m_height );
 487     }
 488
 489     if (show != m_isShown)
 490     {
 491         if (show)
 492         {
 493             gtk_widget_show( m_widget );
 494         }
 495         else
 496             gtk_widget_hide( m_widget );
 497
 498         m_isShown = show;
 499     }
 500
 501     if (show) InitDialog();
 502
 503     return TRUE;
 504 }
 505
 506 bool wxDialog::IsModal() const
 507 {
 508     return m_modalShowing;
 509 }
 510
 511 void wxDialog::SetModal( bool WXUNUSED(flag) )
 512 {
 513 /*
 514   if (flag)
 515     m_windowStyle |= wxDIALOG_MODAL;
 516   else
 517     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 518 */
 519     wxFAIL_MSG( _T("wxDialog:SetModal obsolete now") );
 520 }
 521
 522 int wxDialog::ShowModal()
 523 {
 524     if (IsModal())
 525     {
 526        wxFAIL_MSG( _T("wxDialog:ShowModal called twice") );
 527        return GetReturnCode();
 528     }
 529
 530     Show( TRUE );
 531
 532     m_modalShowing = TRUE;
 533
 534     gtk_grab_add( m_widget );
 535     gtk_main();
 536     gtk_grab_remove( m_widget );
 537
 538     return GetReturnCode();
 539 }
 540
 541 void wxDialog::EndModal( int retCode )
 542 {
 543     SetReturnCode( retCode );
 544
 545     if (!IsModal())
 546     {
 547         wxFAIL_MSG( _T("wxDialog:EndModal called twice") );
 548         return;
 549     }
 550
 551     m_modalShowing = FALSE;
 552
 553     gtk_main_quit();
 554
 555     Show( FALSE );
 556 }
 557
 558 void wxDialog::InitDialog()
 559 {
 560     wxWindow::InitDialog();
 561 }
 562
 563 void wxDialog::SetIcon( const wxIcon &icon )
 564 {
 565     m_icon = icon;
 566     if (!icon.Ok()) return;
 567
 568     wxMask *mask = icon.GetMask();
 569     GdkBitmap *bm = (GdkBitmap *) NULL;
 570     if (mask) bm = mask->GetBitmap();
 571
 572     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 573 }