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     win->GtkOnSize( alloc->x, alloc->y, alloc->width, alloc->height );
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "configure_event"
  64 //-----------------------------------------------------------------------------
  65
  66 static gint gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
  67 {
  68     if (!win->HasVMT()) return FALSE;
  69
  70     win->m_x = event->x;
  71     win->m_y = event->y;
  72
  73     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
  74     mevent.SetEventObject( win );
  75     win->GetEventHandler()->ProcessEvent( mevent );
  76
  77     return FALSE;
  78 }
  79
  80 //-----------------------------------------------------------------------------
  81 // wxDialog
  82 //-----------------------------------------------------------------------------
  83
  84 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
  85     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  86     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  87     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  88     EVT_SIZE    (wxDialog::OnSize)
  89     EVT_CLOSE   (wxDialog::OnCloseWindow)
  90 END_EVENT_TABLE()
  91
  92 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
  93
  94 wxDialog::wxDialog()
  95 {
  96     m_title = "";
  97     m_modalShowing = FALSE;
  98 }
  99
 100 wxDialog::wxDialog( wxWindow *parent,
 101                     wxWindowID id, const wxString &title,
 102                     const wxPoint &pos, const wxSize &size,
 103                     long style, const wxString &name )
 104 {
 105     m_modalShowing = FALSE;
 106     Create( parent, id, title, pos, size, style, name );
 107 }
 108
 109 bool wxDialog::Create( wxWindow *parent,
 110                        wxWindowID id, const wxString &title,
 111                        const wxPoint &pos, const wxSize &size,
 112                        long style, const wxString &name )
 113 {
 114     wxTopLevelWindows.Append( this );
 115
 116     m_needParent = FALSE;
 117
 118     PreCreation( parent, id, pos, size, style, name );
 119
 120     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 121     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 122
 123     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 124
 125     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 126         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 127
 128     m_wxwindow = gtk_myfixed_new();
 129     gtk_widget_show( m_wxwindow );
 130     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 131
 132     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 133
 134     SetTitle( title );
 135
 136     if ((m_x != -1) || (m_y != -1))
 137         gtk_widget_set_uposition( m_widget, m_x, m_y );
 138
 139     gtk_widget_set_usize( m_widget, m_width, m_height );
 140
 141     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 142         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 143
 144     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 145         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 146
 147     if (m_parent) m_parent->AddChild( this );
 148
 149     PostCreation();
 150
 151     return TRUE;
 152 }
 153
 154 wxDialog::~wxDialog()
 155 {
 156     wxTopLevelWindows.DeleteObject( this );
 157
 158     if (wxTheApp->GetTopWindow() == this)
 159     {
 160         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 161     }
 162
 163     if (wxTopLevelWindows.Number() == 0)
 164     {
 165         wxTheApp->ExitMainLoop();
 166     }
 167 }
 168
 169 void wxDialog::SetTitle( const wxString& title )
 170 {
 171     m_title = title;
 172     if (m_title.IsNull()) m_title = "";
 173     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 174 }
 175
 176 wxString wxDialog::GetTitle() const
 177 {
 178     return (wxString&)m_title;
 179 }
 180
 181 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 182 {
 183     if (Validate()) TransferDataFromWindow();
 184 }
 185
 186 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 187 {
 188     if (IsModal())
 189     {
 190         EndModal(wxID_CANCEL);
 191     }
 192     else
 193     {
 194         SetReturnCode(wxID_CANCEL);
 195         this->Show(FALSE);
 196     }
 197 }
 198
 199 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 200 {
 201     if ( Validate() && TransferDataFromWindow())
 202     {
 203         if (IsModal())
 204         {
 205             EndModal(wxID_OK);
 206         }
 207         else
 208         {
 209             SetReturnCode(wxID_OK);
 210             this->Show(FALSE);
 211         }
 212     }
 213 }
 214
 215 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 216 {
 217     // yes
 218 }
 219
 220 void wxDialog::OnCloseWindow(wxCloseEvent& event)
 221 {
 222     // We'll send a Cancel message by default,
 223     // which may close the dialog.
 224     // Check for looping if the Cancel event handler calls Close().
 225
 226     // Note that if a cancel button and handler aren't present in the dialog,
 227     // nothing will happen when you close the dialog via the window manager, or
 228     // via Close().
 229     // We wouldn't want to destroy the dialog by default, since the dialog may have been
 230     // created on the stack.
 231     // However, this does mean that calling dialog->Close() won't delete the dialog
 232     // unless the handler for wxID_CANCEL does so. So use Destroy() if you want to be
 233     // sure to destroy the dialog.
 234     // The default OnCancel (above) simply ends a modal dialog, and hides a modeless dialog.
 235
 236     static wxList closing;
 237
 238     if (closing.Member(this))
 239         return;   // no loops
 240
 241     closing.Append(this);
 242
 243     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 244     cancelEvent.SetEventObject( this );
 245     GetEventHandler()->ProcessEvent(cancelEvent);
 246     closing.DeleteObject(this);
 247 }
 248
 249 bool wxDialog::Destroy()
 250 {
 251     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 252
 253     return TRUE;
 254 }
 255
 256 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 257 {
 258     // due to a bug in gtk, x,y are always 0
 259     // m_x = x;
 260     // m_y = y;
 261
 262     if ((m_height == height) && (m_width == width) &&
 263         (m_sizeSet)) return;
 264     if (!m_wxwindow) return;
 265
 266     m_width = width;
 267     m_height = height;
 268
 269     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 270     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 271     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 272     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 273
 274     gtk_widget_set_usize( m_widget, m_width, m_height );
 275
 276     m_sizeSet = TRUE;
 277
 278     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 279     event.SetEventObject( this );
 280     GetEventHandler()->ProcessEvent( event );
 281 }
 282
 283 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 284 {
 285     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 286
 287     if (GetAutoLayout())
 288     {
 289         Layout();
 290     }
 291     else
 292     {
 293         // no child: go out !
 294         if (!GetChildren().First()) return;
 295
 296         // do we have exactly one child?
 297         wxWindow *child = (wxWindow *) NULL;
 298         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 299         {
 300             wxWindow *win = (wxWindow *)node->Data();
 301             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 302             {
 303                 // it's the second one: do nothing
 304                 if (child) return;
 305                 child = win;
 306             }
 307         }
 308
 309         // yes: set it's size to fill all the frame
 310         int client_x, client_y;
 311         GetClientSize( &client_x, &client_y );
 312         child->SetSize( 1, 1, client_x-2, client_y);
 313     }
 314 }
 315
 316 void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
 317 {
 318     wxASSERT_MSG( (m_widget != NULL), "invalid window" );
 319
 320     // Don't do anything for children of wxMDIChildFrame
 321     if (!m_wxwindow) return;
 322
 323     if (m_resizing) return; // I don't like recursions
 324     m_resizing = TRUE;
 325
 326     int old_x = m_x;
 327     int old_y = m_y;
 328     int old_width = m_width;
 329     int old_height = m_height;
 330
 331     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 332     {
 333         if (x != -1) m_x = x;
 334         if (y != -1) m_y = y;
 335         if (width != -1) m_width = width;
 336         if (height != -1) m_height = height;
 337     }
 338     else
 339     {
 340         m_x = x;
 341         m_y = y;
 342         m_width = width;
 343         m_height = height;
 344     }
 345
 346     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 347     {
 348         if (width == -1) m_width = 80;
 349     }
 350
 351     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 352     {
 353        if (height == -1) m_height = 26;
 354     }
 355
 356     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 357     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 358     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 359     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 360
 361     if ((m_x != -1) || (m_y != -1))
 362     {
 363         if ((m_x != old_x) || (m_y != old_y))
 364             gtk_widget_set_uposition( m_widget, m_x, m_y );
 365     }
 366
 367     if ((m_width != old_width) || (m_height != old_height))
 368     {
 369         gtk_widget_set_usize( m_widget, m_width, m_height );
 370     }
 371
 372     m_sizeSet = TRUE;
 373
 374     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 375     event.SetEventObject( this );
 376     GetEventHandler()->ProcessEvent( event );
 377
 378     m_resizing = FALSE;
 379 }
 380
 381 void wxDialog::SetSize( int width, int height )
 382 {
 383     SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
 384 }
 385
 386 void wxDialog::Centre( int direction )
 387 {
 388     wxASSERT_MSG( (m_widget != NULL), "invalid frame" );
 389
 390     int x = 0;
 391     int y = 0;
 392
 393     if (direction & wxHORIZONTAL == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 394     if (direction & wxVERTICAL == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 395
 396     Move( x, y );
 397 }
 398
 399 bool wxDialog::Show( bool show )
 400 {
 401     if (!show && IsModal())
 402     {
 403       EndModal( wxID_CANCEL );
 404     }
 405
 406     wxWindow::Show( show );
 407
 408     if (show) InitDialog();
 409
 410     return TRUE;
 411 }
 412
 413 bool wxDialog::IsModal() const
 414 {
 415     return m_modalShowing;
 416 }
 417
 418 void wxDialog::SetModal( bool WXUNUSED(flag) )
 419 {
 420 /*
 421   if (flag)
 422     m_windowStyle |= wxDIALOG_MODAL;
 423   else
 424     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 425 */
 426     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 427 }
 428
 429 int wxDialog::ShowModal()
 430 {
 431     if (IsModal())
 432     {
 433        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 434        return GetReturnCode();
 435     }
 436
 437     Show( TRUE );
 438
 439     m_modalShowing = TRUE;
 440
 441     gtk_grab_add( m_widget );
 442     gtk_main();
 443     gtk_grab_remove( m_widget );
 444
 445     return GetReturnCode();
 446 }
 447
 448 void wxDialog::EndModal( int retCode )
 449 {
 450     SetReturnCode( retCode );
 451
 452     if (!IsModal())
 453     {
 454         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 455         return;
 456     }
 457
 458     m_modalShowing = FALSE;
 459
 460     gtk_main_quit();
 461
 462     Show( FALSE );
 463 }
 464
 465 void wxDialog::InitDialog()
 466 {
 467     wxWindow::InitDialog();
 468 }
 469
 470 void wxDialog::SetIcon( const wxIcon &icon )
 471 {
 472     m_icon = icon;
 473     if (!icon.Ok()) return;
 474
 475     wxMask *mask = icon.GetMask();
 476     GdkBitmap *bm = (GdkBitmap *) NULL;
 477     if (mask) bm = mask->GetBitmap();
 478
 479     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 480 }