src/gtk/popupwin.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/popupwin.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_POPUPWIN
  14
  15 #include "wx/popupwin.h"
  16
  17 #ifndef WX_PRECOMP
  18 #endif // WX_PRECOMP
  19
  20 #include <gtk/gtk.h>
  21
  22 #include "wx/gtk/win_gtk.h"
  23
  24 //-----------------------------------------------------------------------------
  25 // "button_press"
  26 //-----------------------------------------------------------------------------
  27
  28 extern "C" {
  29 static gint gtk_popup_button_press (GtkWidget *widget, GdkEvent *gdk_event, wxPopupWindow* win )
  30 {
  31     GtkWidget *child = gtk_get_event_widget (gdk_event);
  32
  33     /* Ignore events sent out before we connected to the signal */
  34     if (win->m_time >= ((GdkEventButton*)gdk_event)->time)
  35         return FALSE;
  36
  37     /*  We don't ask for button press events on the grab widget, so
  38      *  if an event is reported directly to the grab widget, it must
  39      *  be on a window outside the application (and thus we remove
  40      *  the popup window). Otherwise, we check if the widget is a child
  41      *  of the grab widget, and only remove the popup window if it
  42      *  is not. */
  43     if (child != widget)
  44     {
  45         while (child)
  46         {
  47             if (child == widget)
  48                 return FALSE;
  49             child = child->parent;
  50         }
  51     }
  52
  53     wxFocusEvent event( wxEVT_KILL_FOCUS, win->GetId() );
  54     event.SetEventObject( win );
  55
  56     (void)win->GetEventHandler()->ProcessEvent( event );
  57
  58     return TRUE;
  59 }
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "delete_event"
  64 //-----------------------------------------------------------------------------
  65
  66 extern "C" {
  67 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxPopupWindow *win )
  68 {
  69     if (win->IsEnabled())
  70         win->Close();
  71
  72     return TRUE;
  73 }
  74 }
  75
  76 //-----------------------------------------------------------------------------
  77 // "realize" from m_widget
  78 //-----------------------------------------------------------------------------
  79
  80 /* we cannot MWM hints and icons before the widget has been realized,
  81    so we do this directly after realization */
  82
  83 extern "C" {
  84 static gint
  85 gtk_dialog_realized_callback( GtkWidget * WXUNUSED(widget), wxPopupWindow *win )
  86 {
  87     /* all this is for Motif Window Manager "hints" and is supposed to be
  88        recognized by other WM as well. not tested. */
  89     long decor = (long) GDK_DECOR_BORDER;
  90     long func = (long) GDK_FUNC_MOVE ;
  91
  92     gdk_window_set_decorations( win->m_widget->window, (GdkWMDecoration)decor);
  93     gdk_window_set_functions( win->m_widget->window, (GdkWMFunction)func);
  94
  95     gtk_window_set_resizable(GTK_WINDOW(win->m_widget), FALSE);
  96
  97     return FALSE;
  98 }
  99 }
 100
 101 //-----------------------------------------------------------------------------
 102 // InsertChild for wxPopupWindow
 103 //-----------------------------------------------------------------------------
 104
 105 /* Callback for wxFrame. This very strange beast has to be used because
 106  * C++ has no virtual methods in a constructor. We have to emulate a
 107  * virtual function here as wxWidgets requires different ways to insert
 108  * a child in container classes. */
 109
 110 static void wxInsertChildInPopupWin(wxWindowGTK* parent, wxWindowGTK* child)
 111 {
 112     gtk_pizza_put( GTK_PIZZA(parent->m_wxwindow),
 113                    child->m_widget,
 114                    child->m_x,
 115                    child->m_y,
 116                    child->m_width,
 117                    child->m_height );
 118
 119     if (parent->HasFlag(wxTAB_TRAVERSAL))
 120     {
 121         /* we now allow a window to get the focus as long as it
 122            doesn't have any children. */
 123         GTK_WIDGET_UNSET_FLAGS( parent->m_wxwindow, GTK_CAN_FOCUS );
 124     }
 125 }
 126
 127 //-----------------------------------------------------------------------------
 128 // wxPopupWindow
 129 //-----------------------------------------------------------------------------
 130
 131 #ifdef __WXUNIVERSAL__
 132 BEGIN_EVENT_TABLE(wxPopupWindow,wxPopupWindowBase)
 133     EVT_SIZE(wxPopupWindow::OnSize)
 134 END_EVENT_TABLE()
 135 #endif
 136
 137 wxPopupWindow::~wxPopupWindow()
 138 {
 139 }
 140
 141 bool wxPopupWindow::Create( wxWindow *parent, int style )
 142 {
 143     if (!PreCreation( parent, wxDefaultPosition, wxDefaultSize ) ||
 144         !CreateBase( parent, -1, wxDefaultPosition, wxDefaultSize, style, wxDefaultValidator, wxT("popup") ))
 145     {
 146         wxFAIL_MSG( wxT("wxPopupWindow creation failed") );
 147         return false;
 148     }
 149
 150     // Unlike windows, top level windows are created hidden by default.
 151     m_isShown = false;
 152
 153     // All dialogs should really have this style
 154     m_windowStyle |= wxTAB_TRAVERSAL;
 155
 156     m_insertCallback = wxInsertChildInPopupWin;
 157
 158     m_widget = gtk_window_new( GTK_WINDOW_POPUP );
 159
 160     if ((m_parent) && (GTK_IS_WINDOW(m_parent->m_widget)))
 161         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 162
 163     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 164
 165     g_signal_connect (m_widget, "delete_event",
 166                       G_CALLBACK (gtk_dialog_delete_callback), this);
 167
 168     m_wxwindow = gtk_pizza_new();
 169     gtk_widget_show( m_wxwindow );
 170     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 171
 172     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 173
 174     if (m_parent) m_parent->AddChild( this );
 175
 176     PostCreation();
 177
 178     /*  we cannot set MWM hints  before the widget has
 179         been realized, so we do this directly after realization */
 180     g_signal_connect (m_widget, "realize",
 181                       G_CALLBACK (gtk_dialog_realized_callback), this);
 182
 183     m_time = gtk_get_current_event_time();
 184
 185     g_signal_connect (m_widget, "button_press_event",
 186                       G_CALLBACK (gtk_popup_button_press), this);
 187
 188     return true;
 189 }
 190
 191 void wxPopupWindow::DoMoveWindow(int WXUNUSED(x), int WXUNUSED(y), int WXUNUSED(width), int WXUNUSED(height) )
 192 {
 193     wxFAIL_MSG( wxT("DoMoveWindow called for wxPopupWindow") );
 194 }
 195
 196 void wxPopupWindow::DoSetSize( int x, int y, int width, int height, int sizeFlags )
 197 {
 198     wxASSERT_MSG( (m_widget != NULL), wxT("invalid dialog") );
 199     wxASSERT_MSG( (m_wxwindow != NULL), wxT("invalid dialog") );
 200
 201     int old_x = m_x;
 202     int old_y = m_y;
 203
 204     int old_width = m_width;
 205     int old_height = m_height;
 206
 207     if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 208         m_x = x;
 209     if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 210         m_y = y;
 211     if (width != -1)
 212         m_width = width;
 213     if (height != -1)
 214         m_height = height;
 215
 216     ConstrainSize();
 217
 218     if ((m_x != -1) || (m_y != -1))
 219     {
 220         if ((m_x != old_x) || (m_y != old_y))
 221         {
 222             gtk_window_move( GTK_WINDOW(m_widget), m_x, m_y );
 223         }
 224     }
 225
 226     if ((m_width != old_width) || (m_height != old_height))
 227     {
 228         // gtk_window_resize does not work for GTK_WINDOW_POPUP
 229         gtk_widget_set_size_request( m_widget, m_width, m_height );
 230         wxSizeEvent event(GetSize(), GetId());
 231         event.SetEventObject(this);
 232         GetEventHandler()->ProcessEvent(event);
 233     }
 234 }
 235
 236 bool wxPopupWindow::Show( bool show )
 237 {
 238     if (show && !IsShown())
 239     {
 240         wxSizeEvent event(GetSize(), GetId());
 241         event.SetEventObject(this);
 242         GetEventHandler()->ProcessEvent(event);
 243     }
 244
 245     bool ret = wxWindow::Show( show );
 246
 247     return ret;
 248 }
 249
 250 #endif // wxUSE_POPUPWIN