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