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 #include "wx/gtk/win_gtk.h"
  18
  19 //-----------------------------------------------------------------------------
  20
  21 extern wxList wxPendingDelete;
  22
  23 //-----------------------------------------------------------------------------
  24 // "delete_event"
  25 //-----------------------------------------------------------------------------
  26
  27 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
  28 {
  29 /*
  30     printf( "OnDelete from " );
  31     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  32         printf( win->GetClassInfo()->GetClassName() );
  33     printf( ".\n" );
  34 */
  35
  36     win->Close();
  37
  38     return TRUE;
  39 }
  40
  41 //-----------------------------------------------------------------------------
  42 // "size_allocate"
  43 //-----------------------------------------------------------------------------
  44
  45 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
  46 {
  47     if (!win->HasVMT()) return;
  48
  49 /*
  50     printf( "OnDialogResize from " );
  51     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  52         printf( win->GetClassInfo()->GetClassName() );
  53     printf( ".\n" );
  54 */
  55
  56     win->GtkOnSize( alloc->x, alloc->y, alloc->width, alloc->height );
  57 }
  58
  59 //-----------------------------------------------------------------------------
  60 // wxDialog
  61 //-----------------------------------------------------------------------------
  62
  63 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
  64     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  65     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  66     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  67     EVT_SIZE    (wxDialog::OnSize)
  68     EVT_CLOSE   (wxDialog::OnCloseWindow)
  69 END_EVENT_TABLE()
  70
  71 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
  72
  73 wxDialog::wxDialog()
  74 {
  75     m_title = "";
  76     m_modalShowing = FALSE;
  77 }
  78
  79 wxDialog::wxDialog( wxWindow *parent,
  80                     wxWindowID id, const wxString &title,
  81                     const wxPoint &pos, const wxSize &size,
  82                     long style, const wxString &name )
  83 {
  84     m_modalShowing = FALSE;
  85     Create( parent, id, title, pos, size, style, name );
  86 }
  87
  88 bool wxDialog::Create( wxWindow *parent,
  89                        wxWindowID id, const wxString &title,
  90                        const wxPoint &pos, const wxSize &size,
  91                        long style, const wxString &name )
  92 {
  93     wxTopLevelWindows.Append( this );
  94
  95     m_needParent = FALSE;
  96
  97     PreCreation( parent, id, pos, size, style, name );
  98
  99     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 100     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 101
 102     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 103
 104     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 105         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 106
 107     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 108         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 109
 110     m_wxwindow = gtk_myfixed_new();
 111     gtk_widget_show( m_wxwindow );
 112     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 113
 114     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 115
 116     SetTitle( title );
 117
 118     if ((m_x != -1) || (m_y != -1))
 119         gtk_widget_set_uposition( m_widget, m_x, m_y );
 120
 121     gtk_widget_set_usize( m_widget, m_width, m_height );
 122
 123     if (m_parent) m_parent->AddChild( this );
 124
 125
 126     PostCreation();
 127
 128     return TRUE;
 129 }
 130
 131 wxDialog::~wxDialog()
 132 {
 133     wxTopLevelWindows.DeleteObject( this );
 134     if (wxTopLevelWindows.Number() == 0) wxTheApp->ExitMainLoop();
 135 }
 136
 137 void wxDialog::SetTitle( const wxString& title )
 138 {
 139     m_title = title;
 140     if (m_title.IsNull()) m_title = "";
 141     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 142 }
 143
 144 wxString wxDialog::GetTitle() const
 145 {
 146     return (wxString&)m_title;
 147 }
 148
 149 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 150 {
 151     if (Validate()) TransferDataFromWindow();
 152 }
 153
 154 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 155 {
 156     if (IsModal())
 157     {
 158         EndModal(wxID_CANCEL);
 159     }
 160     else
 161     {
 162         SetReturnCode(wxID_CANCEL);
 163         this->Show(FALSE);
 164     }
 165 }
 166
 167 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 168 {
 169     if ( Validate() && TransferDataFromWindow())
 170     {
 171         if (IsModal())
 172         {
 173             EndModal(wxID_OK);
 174         }
 175         else
 176         {
 177             SetReturnCode(wxID_OK);
 178             this->Show(FALSE);
 179         }
 180     }
 181 }
 182
 183 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 184 {
 185   // yes
 186 }
 187
 188 bool wxDialog::OnClose()
 189 {
 190     static wxList closing;
 191
 192     if (closing.Member(this)) return FALSE;   // no loops
 193
 194     closing.Append(this);
 195
 196     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 197     cancelEvent.SetEventObject( this );
 198     GetEventHandler()->ProcessEvent(cancelEvent);
 199     closing.DeleteObject(this);
 200
 201     return FALSE;
 202 }
 203
 204 bool wxDialog::Destroy()
 205 {
 206     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 207
 208     return TRUE;
 209 }
 210
 211 void wxDialog::OnCloseWindow( wxCloseEvent& event )
 212 {
 213     if (GetEventHandler()->OnClose() || event.GetForce())
 214     {
 215         this->Destroy();
 216     }
 217 }
 218
 219 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 220 {
 221     // due to a bug in gtk, x,y are always 0
 222     // m_x = x;
 223     // m_y = y;
 224
 225     if ((m_height == height) && (m_width == width) &&
 226         (m_sizeSet)) return;
 227     if (!m_wxwindow) return;
 228
 229     m_width = width;
 230     m_height = height;
 231
 232     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 233     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 234     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_minWidth;
 235     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_minHeight;
 236
 237     gtk_widget_set_usize( m_widget, m_width, m_height );
 238
 239     m_sizeSet = TRUE;
 240
 241     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 242     event.SetEventObject( this );
 243     GetEventHandler()->ProcessEvent( event );
 244 }
 245
 246 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 247 {
 248     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 249
 250     if (GetAutoLayout())
 251     {
 252         Layout();
 253     }
 254     else
 255     {
 256         // no child: go out !
 257         if (!GetChildren().First()) return;
 258
 259         // do we have exactly one child?
 260         wxWindow *child = (wxWindow *) NULL;
 261         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 262         {
 263             wxWindow *win = (wxWindow *)node->Data();
 264             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 265             {
 266                 // it's the second one: do nothing
 267                 if (child) return;
 268                 child = win;
 269             }
 270         }
 271
 272         // yes: set it's size to fill all the frame
 273         int client_x, client_y;
 274         GetClientSize( &client_x, &client_y );
 275         child->SetSize( 1, 1, client_x-2, client_y);
 276     }
 277 }
 278
 279 void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
 280 {
 281     wxASSERT_MSG( (m_widget != NULL), "invalid window" );
 282
 283     // Don't do anything for children of wxMDIChildFrame
 284     if (!m_wxwindow) return;
 285
 286     if (m_resizing) return; // I don't like recursions
 287     m_resizing = TRUE;
 288
 289     int old_x = m_x;
 290     int old_y = m_y;
 291     int old_width = m_width;
 292     int old_height = m_height;
 293
 294     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 295     {
 296         if (x != -1) m_x = x;
 297         if (y != -1) m_y = y;
 298         if (width != -1) m_width = width;
 299         if (height != -1) m_height = height;
 300     }
 301     else
 302     {
 303         m_x = x;
 304         m_y = y;
 305         m_width = width;
 306         m_height = height;
 307     }
 308
 309     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 310     {
 311         if (width == -1) m_width = 80;
 312     }
 313
 314     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 315     {
 316        if (height == -1) m_height = 26;
 317     }
 318
 319     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 320     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 321     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_minWidth;
 322     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_minHeight;
 323
 324     if ((m_x != -1) || (m_y != -1))
 325     {
 326         if ((m_x != old_x) || (m_y != old_y))
 327             gtk_widget_set_uposition( m_widget, m_x, m_y );
 328     }
 329
 330     if ((m_width != old_width) || (m_height != old_height))
 331     {
 332         gtk_widget_set_usize( m_widget, m_width, m_height );
 333     }
 334
 335     m_sizeSet = TRUE;
 336
 337     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 338     event.SetEventObject( this );
 339     GetEventHandler()->ProcessEvent( event );
 340
 341     m_resizing = FALSE;
 342 }
 343
 344 void wxDialog::SetSize( int width, int height )
 345 {
 346     SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
 347 }
 348
 349 void wxDialog::Centre( int direction )
 350 {
 351     wxASSERT_MSG( (m_widget != NULL), "invalid frame" );
 352
 353     int x = 0;
 354     int y = 0;
 355
 356     if (direction & wxHORIZONTAL == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 357     if (direction & wxVERTICAL == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 358
 359     Move( x, y );
 360 }
 361
 362 bool wxDialog::Show( bool show )
 363 {
 364     if (!show && IsModal())
 365     {
 366       EndModal( wxID_CANCEL );
 367     }
 368
 369     wxWindow::Show( show );
 370
 371     if (show) InitDialog();
 372
 373     return TRUE;
 374 }
 375
 376 bool wxDialog::IsModal() const
 377 {
 378     return m_modalShowing;
 379 }
 380
 381 void wxDialog::SetModal( bool WXUNUSED(flag) )
 382 {
 383 /*
 384   if (flag)
 385     m_windowStyle |= wxDIALOG_MODAL;
 386   else
 387     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 388 */
 389     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 390 }
 391
 392 int wxDialog::ShowModal()
 393 {
 394     if (IsModal())
 395     {
 396        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 397        return GetReturnCode();
 398     }
 399
 400     Show( TRUE );
 401
 402     m_modalShowing = TRUE;
 403
 404     gtk_grab_add( m_widget );
 405     gtk_main();
 406     gtk_grab_remove( m_widget );
 407
 408     return GetReturnCode();
 409 }
 410
 411 void wxDialog::EndModal( int retCode )
 412 {
 413     SetReturnCode( retCode );
 414
 415     if (!IsModal())
 416     {
 417         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 418         return;
 419     }
 420
 421     m_modalShowing = FALSE;
 422
 423     gtk_main_quit();
 424
 425     Show( FALSE );
 426 }
 427
 428 void wxDialog::InitDialog()
 429 {
 430     wxWindow::InitDialog();
 431 }
 432
 433 void wxDialog::SetIcon( const wxIcon &icon )
 434 {
 435     m_icon = icon;
 436     if (!icon.Ok()) return;
 437
 438     wxMask *mask = icon.GetMask();
 439     GdkBitmap *bm = (GdkBitmap *) NULL;
 440     if (mask) bm = mask->GetBitmap();
 441
 442     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 443 }