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