src/gtk/taskbar.cpp

   1 /////////////////////////////////////////////////////////////////////////
   2 // File:        src/gtk/taskbar.cpp
   3 // Purpose:     wxTaskBarIcon
   4 // Author:      Vaclav Slavik
   5 // Modified by: Paul Cornett
   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 "wx/taskbar.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/toplevel.h"
  21     #include "wx/menu.h"
  22     #include "wx/icon.h"
  23 #endif
  24
  25 #include "eggtrayicon.h"
  26 #include <gtk/gtk.h>
  27
  28 #if !GTK_CHECK_VERSION(2,10,0)
  29     typedef struct _GtkStatusIcon GtkStatusIcon;
  30 #endif
  31
  32 class wxTaskBarIcon::Private
  33 {
  34 public:
  35     Private(wxTaskBarIcon* taskBarIcon);
  36     ~Private();
  37     void SetIcon();
  38     void size_allocate(int width, int height);
  39
  40     // owning wxTaskBarIcon
  41     wxTaskBarIcon* m_taskBarIcon;
  42     // used when GTK+ >= 2.10
  43     GtkStatusIcon* m_statusIcon;
  44     // used when GTK+ < 2.10
  45     GtkWidget* m_eggTrayIcon;
  46     // for PopupMenu
  47     wxWindow* m_win;
  48     // for tooltip when GTK+ < 2.10
  49     GtkTooltips* m_tooltips;
  50     wxBitmap m_bitmap;
  51     wxString m_tipText;
  52     // width and height of available space, only used when GTK+ < 2.10
  53     int m_size;
  54 };
  55 //-----------------------------------------------------------------------------
  56
  57 extern "C" {
  58 static void
  59 icon_size_allocate(GtkWidget*, GtkAllocation* alloc, wxTaskBarIcon::Private* priv)
  60 {
  61     priv->size_allocate(alloc->width, alloc->height);
  62 }
  63
  64 static void
  65 icon_destroy(GtkWidget*, wxTaskBarIcon::Private* priv)
  66 {
  67     // Icon window destroyed, probably because tray program has died.
  68     // Recreate icon so it will appear if tray program is restarted.
  69     priv->m_eggTrayIcon = NULL;
  70     priv->SetIcon();
  71 }
  72
  73 static void
  74 icon_activate(void*, wxTaskBarIcon* taskBarIcon)
  75 {
  76     // activate occurs from single click with GTK+
  77     wxTaskBarIconEvent event(wxEVT_TASKBAR_LEFT_DOWN, taskBarIcon);
  78     if (!taskBarIcon->SafelyProcessEvent(event))
  79     {
  80         // if single click not handled, send double click for compatibility
  81         event.SetEventType(wxEVT_TASKBAR_LEFT_DCLICK);
  82         taskBarIcon->SafelyProcessEvent(event);
  83     }
  84 }
  85
  86 static gboolean
  87 icon_popup_menu(GtkWidget*, wxTaskBarIcon* taskBarIcon)
  88 {
  89     wxTaskBarIconEvent event(wxEVT_TASKBAR_CLICK, taskBarIcon);
  90     taskBarIcon->SafelyProcessEvent(event);
  91     return true;
  92 }
  93
  94 static gboolean
  95 icon_button_press_event(GtkWidget*, GdkEventButton* event, wxTaskBarIcon* taskBarIcon)
  96 {
  97     if (event->type == GDK_BUTTON_PRESS)
  98     {
  99         if (event->button == 1)
 100             icon_activate(NULL, taskBarIcon);
 101         else if (event->button == 3)
 102             icon_popup_menu(NULL, taskBarIcon);
 103     }
 104     return false;
 105 }
 106
 107 #if GTK_CHECK_VERSION(2,10,0)
 108 static void
 109 status_icon_popup_menu(GtkStatusIcon*, guint, guint, wxTaskBarIcon* taskBarIcon)
 110 {
 111     icon_popup_menu(NULL, taskBarIcon);
 112 }
 113 #endif
 114 } // extern "C"
 115 //-----------------------------------------------------------------------------
 116
 117 bool wxTaskBarIconBase::IsAvailable()
 118 {
 119     char name[32];
 120     g_snprintf(name, sizeof(name), "_NET_SYSTEM_TRAY_S%d",
 121         gdk_x11_get_default_screen());
 122     Atom atom = gdk_x11_get_xatom_by_name(name);
 123
 124     Window manager = XGetSelectionOwner(gdk_x11_get_default_xdisplay(), atom);
 125
 126     return manager != None;
 127 }
 128 //-----------------------------------------------------------------------------
 129
 130 wxTaskBarIcon::Private::Private(wxTaskBarIcon* taskBarIcon)
 131 {
 132     m_taskBarIcon = taskBarIcon;
 133     m_statusIcon = NULL;
 134     m_eggTrayIcon = NULL;
 135     m_win = NULL;
 136     m_tooltips = NULL;
 137     m_size = 0;
 138 }
 139
 140 wxTaskBarIcon::Private::~Private()
 141 {
 142     if (m_statusIcon)
 143         g_object_unref(m_statusIcon);
 144     else if (m_eggTrayIcon)
 145     {
 146         g_signal_handlers_disconnect_by_func(m_eggTrayIcon, (void*)icon_destroy, this);
 147         gtk_widget_destroy(m_eggTrayIcon);
 148     }
 149     if (m_win)
 150     {
 151         m_win->PopEventHandler();
 152         m_win->Destroy();
 153     }
 154     if (m_tooltips)
 155     {
 156         gtk_object_destroy(GTK_OBJECT(m_tooltips));
 157         g_object_unref(m_tooltips);
 158     }
 159 }
 160
 161 void wxTaskBarIcon::Private::SetIcon()
 162 {
 163 #if GTK_CHECK_VERSION(2,10,0)
 164     if (gtk_check_version(2,10,0) == NULL)
 165     {
 166         if (m_statusIcon)
 167             gtk_status_icon_set_from_pixbuf(m_statusIcon, m_bitmap.GetPixbuf());
 168         else
 169         {
 170             m_statusIcon = gtk_status_icon_new_from_pixbuf(m_bitmap.GetPixbuf());
 171             g_signal_connect(m_statusIcon, "activate",
 172                 G_CALLBACK(icon_activate), m_taskBarIcon);
 173             g_signal_connect(m_statusIcon, "popup_menu",
 174                 G_CALLBACK(status_icon_popup_menu), m_taskBarIcon);
 175         }
 176     }
 177     else
 178 #endif
 179     {
 180         m_size = 0;
 181         if (m_eggTrayIcon)
 182         {
 183             GtkWidget* image = GTK_BIN(m_eggTrayIcon)->child;
 184             gtk_image_set_from_pixbuf(GTK_IMAGE(image), m_bitmap.GetPixbuf());
 185         }
 186         else
 187         {
 188             m_eggTrayIcon = GTK_WIDGET(egg_tray_icon_new("wxTaskBarIcon"));
 189             gtk_widget_add_events(m_eggTrayIcon, GDK_BUTTON_PRESS_MASK);
 190             g_signal_connect(m_eggTrayIcon, "size_allocate",
 191                 G_CALLBACK(icon_size_allocate), this);
 192             g_signal_connect(m_eggTrayIcon, "destroy",
 193                 G_CALLBACK(icon_destroy), this);
 194             g_signal_connect(m_eggTrayIcon, "button_press_event",
 195                 G_CALLBACK(icon_button_press_event), m_taskBarIcon);
 196             g_signal_connect(m_eggTrayIcon, "popup_menu",
 197                 G_CALLBACK(icon_popup_menu), m_taskBarIcon);
 198             GtkWidget* image = gtk_image_new_from_pixbuf(m_bitmap.GetPixbuf());
 199             gtk_container_add(GTK_CONTAINER(m_eggTrayIcon), image);
 200             gtk_widget_show_all(m_eggTrayIcon);
 201         }
 202     }
 203 #if wxUSE_TOOLTIPS
 204     const char *tip_text = NULL;
 205     if (!m_tipText.empty())
 206         tip_text = m_tipText.c_str();
 207
 208 #if GTK_CHECK_VERSION(2,10,0)
 209     if (m_statusIcon)
 210         gtk_status_icon_set_tooltip(m_statusIcon, tip_text);
 211     else
 212 #endif
 213     {
 214         if (tip_text && m_tooltips == NULL)
 215         {
 216             m_tooltips = gtk_tooltips_new();
 217             g_object_ref(m_tooltips);
 218             gtk_object_sink(GTK_OBJECT(m_tooltips));
 219         }
 220         if (m_tooltips)
 221             gtk_tooltips_set_tip(m_tooltips, m_eggTrayIcon, tip_text, "");
 222     }
 223 #endif // wxUSE_TOOLTIPS
 224 }
 225
 226 void wxTaskBarIcon::Private::size_allocate(int width, int height)
 227 {
 228     int size = height;
 229     EggTrayIcon* icon = EGG_TRAY_ICON(m_eggTrayIcon);
 230     if (egg_tray_icon_get_orientation(icon) == GTK_ORIENTATION_VERTICAL)
 231         size = width;
 232     if (m_size == size)
 233         return;
 234     m_size = size;
 235     int w = m_bitmap.GetWidth();
 236     int h = m_bitmap.GetHeight();
 237     if (w > size || h > size)
 238     {
 239         if (w > size) w = size;
 240         if (h > size) h = size;
 241         GdkPixbuf* pixbuf =
 242             gdk_pixbuf_scale_simple(m_bitmap.GetPixbuf(), w, h, GDK_INTERP_BILINEAR);
 243         GtkImage* image = GTK_IMAGE(GTK_BIN(m_eggTrayIcon)->child);
 244         gtk_image_set_from_pixbuf(image, pixbuf);
 245         g_object_unref(pixbuf);
 246     }
 247 }
 248 //-----------------------------------------------------------------------------
 249
 250 IMPLEMENT_DYNAMIC_CLASS(wxTaskBarIcon, wxEvtHandler)
 251
 252 wxTaskBarIcon::wxTaskBarIcon()
 253 {
 254     m_priv = new Private(this);
 255 }
 256
 257 wxTaskBarIcon::~wxTaskBarIcon()
 258 {
 259     delete m_priv;
 260 }
 261
 262 bool wxTaskBarIcon::SetIcon(const wxIcon& icon, const wxString& tooltip)
 263 {
 264     m_priv->m_bitmap = icon;
 265     m_priv->m_tipText = tooltip;
 266     m_priv->SetIcon();
 267     return true;
 268 }
 269
 270 bool wxTaskBarIcon::RemoveIcon()
 271 {
 272     delete m_priv;
 273     m_priv = new Private(this);
 274     return true;
 275 }
 276
 277 bool wxTaskBarIcon::IsIconInstalled() const
 278 {
 279     return m_priv->m_statusIcon || m_priv->m_eggTrayIcon;
 280 }
 281
 282 bool wxTaskBarIcon::PopupMenu(wxMenu* menu)
 283 {
 284 #if wxUSE_MENUS
 285     if (m_priv->m_win == NULL)
 286     {
 287         m_priv->m_win = new wxTopLevelWindow(
 288             NULL, wxID_ANY, wxString(), wxDefaultPosition, wxDefaultSize, 0);
 289         m_priv->m_win->PushEventHandler(this);
 290     }
 291     wxPoint point(-1, -1);
 292 #ifdef __WXUNIVERSAL__
 293     point = wxGetMousePosition();
 294 #endif
 295     m_priv->m_win->PopupMenu(menu, point);
 296 #endif // wxUSE_MENUS
 297     return true;
 298 }
 299
 300 #endif // wxUSE_TASKBARICON