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