src/gtk/taskbar.cpp

   1 /////////////////////////////////////////////////////////////////////////
   2 // File:        src/gtk/taskbar.cpp
   3 // Purpose:     wxTaskBarIcon (src/unix/taskbarx11.cpp) helper for GTK2
   4 // Author:      Vaclav Slavik
   5 // Modified by:
   6 // Created:     2004/05/29
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vaclav Slavik, 2004
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_TASKBARICON
  16
  17 #include <gtk/gtkversion.h>
  18 #if GTK_CHECK_VERSION(2, 1, 0)
  19
  20 #include "wx/gtk/taskbarpriv.h"
  21
  22 #ifndef WX_PRECOMP
  23     #include "wx/log.h"
  24     #include "wx/frame.h"
  25     #include "wx/menu.h"
  26 #endif
  27
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkx.h>
  30
  31 #include "eggtrayicon.h"
  32
  33 wxTaskBarIconAreaBase::wxTaskBarIconAreaBase()
  34 {
  35     if (IsProtocolSupported())
  36     {
  37         m_widget = GTK_WIDGET(egg_tray_icon_new("systray icon"));
  38         gtk_window_set_resizable(GTK_WINDOW(m_widget), false);
  39
  40         wxLogTrace(_T("systray"), _T("using freedesktop.org systray spec"));
  41     }
  42
  43     wxTopLevelWindow::Create(
  44             NULL, wxID_ANY, _T("systray icon"),
  45             wxDefaultPosition, wxDefaultSize,
  46             wxDEFAULT_FRAME_STYLE | wxFRAME_NO_TASKBAR | wxSIMPLE_BORDER |
  47             wxFRAME_SHAPED,
  48             wxEmptyString /*eggtray doesn't like setting wmclass*/);
  49
  50     m_invokingWindow = NULL;
  51 }
  52
  53 bool wxTaskBarIconAreaBase::IsProtocolSupported()
  54 {
  55     static int s_supported = -1;
  56     if (s_supported == -1)
  57     {
  58         Display *display = GDK_DISPLAY();
  59         Screen *screen = DefaultScreenOfDisplay(display);
  60
  61         char name[32];
  62         g_snprintf(name, sizeof(name), "_NET_SYSTEM_TRAY_S%d",
  63             XScreenNumberOfScreen(screen));
  64         Atom atom = XInternAtom(display, name, False);
  65
  66         Window manager = XGetSelectionOwner(display, atom);
  67
  68         s_supported = (manager != None);
  69     }
  70
  71     return (bool)s_supported;
  72 }
  73
  74 bool wxTaskBarIconAreaBase::IsDecorCacheable() const
  75 {
  76     // Apparently, WM frame extents extend to full width of screen when window
  77     // is in the tray. Don't cache, it's not useful for other windows.
  78     return false;
  79 }
  80
  81 //-----------------------------------------------------------------------------
  82 // Pop-up menu stuff
  83 //-----------------------------------------------------------------------------
  84
  85 extern "C" WXDLLIMPEXP_CORE void gtk_pop_hide_callback( GtkWidget *widget, bool* is_waiting  );
  86
  87 extern WXDLLIMPEXP_CORE void SetInvokingWindow( wxMenu *menu, wxWindow* win );
  88
  89 extern "C" WXDLLIMPEXP_CORE
  90     void wxPopupMenuPositionCallback( GtkMenu *menu,
  91                                       gint *x, gint *y,
  92                                       gboolean * WXUNUSED(whatever),
  93                                       gpointer user_data );
  94
  95 #if wxUSE_MENUS_NATIVE
  96 bool wxTaskBarIconAreaBase::DoPopupMenu( wxMenu *menu, int x, int y )
  97 {
  98     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid window") );
  99
 100     wxCHECK_MSG( menu != NULL, false, wxT("invalid popup-menu") );
 101
 102     // NOTE: if you change this code, you need to update
 103     //       the same code in window.cpp as well. This
 104     //       is ugly code duplication, I know,
 105
 106     SetInvokingWindow( menu, this );
 107
 108     menu->UpdateUI( m_invokingWindow );
 109
 110     bool is_waiting = true;
 111
 112     gulong handler = g_signal_connect (menu->m_menu, "hide",
 113                                        G_CALLBACK (gtk_pop_hide_callback),
 114                                        &is_waiting);
 115
 116     wxPoint pos;
 117     gpointer userdata;
 118     GtkMenuPositionFunc posfunc;
 119     if ( x == -1 && y == -1 )
 120     {
 121         // use GTK's default positioning algorithm
 122         userdata = NULL;
 123         posfunc = NULL;
 124     }
 125     else
 126     {
 127         pos = ClientToScreen(wxPoint(x, y));
 128         userdata = &pos;
 129         posfunc = wxPopupMenuPositionCallback;
 130     }
 131
 132     gtk_menu_popup(
 133                   GTK_MENU(menu->m_menu),
 134                   (GtkWidget *) NULL,           // parent menu shell
 135                   (GtkWidget *) NULL,           // parent menu item
 136                   posfunc,                      // function to position it
 137                   userdata,                     // client data
 138                   0,                            // button used to activate it
 139                   gtk_get_current_event_time()
 140                 );
 141
 142     while (is_waiting)
 143     {
 144         gtk_main_iteration();
 145     }
 146
 147     g_signal_handler_disconnect (menu->m_menu, handler);
 148
 149     return true;
 150 }
 151
 152 #endif // wxUSE_MENUS_NATIVE
 153 #endif // GTK_CHECK_VERSION(2, 1, 0)
 154 #endif // wxUSE_TASKBARICON