Initial release

1 files changed, 779 insertions, 0 deletions

diff --git a/mate-window-picker-applet/task-item.c b/mate-window-picker-applet/task-item.c
new file mode 100644
index 0000000..3e0dd97
--- /dev/null
+++ b/mate-window-picker-applet/task-item.c
@@ -0,0 +1,779 @@
+/*
+ * Copyright (C) 2008 Canonical Ltd
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 3 as 
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by Jason Smith <[email protected]>
+ *
+ */
+
+#include "task-item.h"
+#include "task-list.h"
+
+#include <math.h>
+#include <glib/gi18n.h>
+#include <cairo/cairo.h>
+
+G_DEFINE_TYPE (TaskItem, task_item, GTK_TYPE_EVENT_BOX);
+
+#define TASK_ITEM_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj),\
+  TASK_TYPE_ITEM, \
+  TaskItemPrivate))
+
+#define DEFAULT_TASK_ITEM_HEIGHT 24;  
+#define DEFAULT_TASK_ITEM_WIDTH 28
+
+struct _TaskItemPrivate
+{
+  MatewnckWindow   *window;
+  MatewnckScreen   *screen;
+  GdkPixbuf    *pixbuf;
+  GdkRectangle area;
+  
+  GTimeVal     urgent_time;
+  guint        timer;
+  gboolean     mouse_over;
+};
+
+enum {
+  TASK_ITEM_CLOSED_SIGNAL,
+  LAST_SIGNAL
+};
+
+/* D&D stuff */
+static const GtkTargetEntry drop_types[] =
+{
+  { "STRING", 0, 0 },
+  { "text/plain", 0, 0},
+  { "text/uri-list", 0, 0}
+};
+static const gint n_drop_types = G_N_ELEMENTS(drop_types);
+
+static guint task_item_signals[LAST_SIGNAL] = { 0 };
+
+static void
+update_hints (TaskItem *item)
+{
+  GtkWidget *parent;
+  GtkWidget *widget;
+  MatewnckWindow *window;
+  gint x, y, x1, y1;
+
+  widget = GTK_WIDGET (item);
+  window = item->priv->window;
+  /* Skip problems */
+  if (!MATEWNCK_IS_WINDOW (window)) return;
+  if (!GTK_IS_WIDGET (widget)) return;
+
+  /* Skip invisible windows */
+  if (!GTK_WIDGET_VISIBLE (widget)) return;
+
+  x = y = 0;
+
+  /* Recursively compute the button's coordinates */
+  for (parent = widget; parent; parent = parent->parent)
+  {
+    if (parent->parent)
+    {
+      x += parent->allocation.x;
+      y += parent->allocation.y;
+    }
+    else
+    {
+      x1 = y1 = 0;
+      if (GDK_IS_WINDOW (parent->window))
+        gdk_window_get_origin (parent->window, &x1, &y1);
+      x += x1; y += y1;
+      break;
+    }
+  }
+    
+  /* Set the minimize hint for the window */
+  matewnck_window_set_icon_geometry (window, x, y,
+                                 widget->allocation.width,
+                                 widget->allocation.height);
+}
+
+static gboolean 
+on_task_item_button_released (GtkWidget      *widget, 
+                              GdkEventButton *event,
+                              TaskItem       *item)
+{
+  MatewnckWindow *window;
+  MatewnckScreen *screen;
+  MatewnckWorkspace *workspace;
+  TaskItemPrivate *priv;
+  
+  g_return_val_if_fail (TASK_IS_ITEM (item), TRUE);
+  
+  priv = item->priv;
+  window = priv->window;
+  
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (window), TRUE);
+  
+  screen = priv->screen;
+  workspace = matewnck_window_get_workspace (window);
+  
+  if (event->button == 1)
+  {
+  
+    if (MATEWNCK_IS_WORKSPACE (workspace) && workspace != matewnck_screen_get_active_workspace (screen))
+    {
+      matewnck_workspace_activate (workspace, GDK_CURRENT_TIME);
+    }
+    if (matewnck_window_is_active (window))
+    {
+      matewnck_window_minimize (window);
+    }
+    else
+    {
+      matewnck_window_activate (window, GDK_CURRENT_TIME);
+    }
+  }
+  return TRUE;
+}
+
+static void
+task_item_set_visibility (TaskItem *item)
+{
+  MatewnckScreen *screen;
+  MatewnckWindow *window;
+  MatewnckWorkspace *workspace;
+
+  g_return_if_fail (TASK_IS_ITEM (item));
+  
+  TaskItemPrivate *priv = item->priv;
+  
+  if (!MATEWNCK_IS_WINDOW (priv->window)) 
+  {
+    gtk_widget_hide (GTK_WIDGET (item));
+    return;
+  }
+  
+  window = priv->window;
+  
+  screen = priv->screen;
+  workspace = matewnck_screen_get_active_workspace (screen);
+  
+  gboolean show_all = task_list_get_show_all_windows (TASK_LIST (task_list_get_default ()));
+  gboolean show_window = FALSE;
+  
+  if (!matewnck_window_is_skip_tasklist (window)) 
+  {
+    if (matewnck_workspace_is_virtual (workspace))
+    {
+      show_window = matewnck_window_is_in_viewport (window, workspace);
+    }
+    else
+    {
+      show_window = matewnck_window_is_on_workspace (window, workspace);
+    }
+    show_window = show_window || show_all;
+  }
+  
+  if (show_window)
+  {
+    gtk_widget_show (GTK_WIDGET (item));
+  }
+  else
+  {
+    gtk_widget_hide (GTK_WIDGET (item));
+  }
+}
+
+static void 
+task_item_size_request (GtkWidget      *widget,
+		       GtkRequisition *requisition)
+{
+  /* Candidate for terrible hack of the year award */
+  requisition->width  = DEFAULT_TASK_ITEM_WIDTH;
+  requisition->height = DEFAULT_TASK_ITEM_HEIGHT;
+}
+
+static GdkPixbuf *
+task_item_sized_pixbuf_for_window (TaskItem   *item,
+                                   MatewnckWindow *window,
+                                   gint size)
+{
+  GdkPixbuf *pbuf = NULL;
+  
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (window), NULL);
+  
+  if (matewnck_window_has_icon_name (window))
+  {
+    const gchar *icon_name = matewnck_window_get_icon_name (window);
+    GtkIconTheme *icon_theme = gtk_icon_theme_get_default ();
+    
+    if (gtk_icon_theme_has_icon (icon_theme, icon_name))
+    {
+      GdkPixbuf *internal = gtk_icon_theme_load_icon (icon_theme, 
+                                                      icon_name,
+                                                      size,
+                                                      GTK_ICON_LOOKUP_FORCE_SIZE,
+                                                      NULL);
+      pbuf = gdk_pixbuf_copy (internal);
+      g_object_unref (internal);
+    }
+  }
+  
+  if (!pbuf)
+  {
+    pbuf = gdk_pixbuf_copy (matewnck_window_get_icon (item->priv->window));
+  }
+  
+  gint width = gdk_pixbuf_get_width (pbuf);
+  gint height = gdk_pixbuf_get_height (pbuf);
+
+  if (MAX (width, height) != size)
+  {
+    gdouble scale = (gdouble) size / (gdouble) MAX (width, height);
+  
+    GdkPixbuf *tmp = pbuf;
+    pbuf = gdk_pixbuf_scale_simple (tmp, (gint) (width * scale), (gint) (height * scale), GDK_INTERP_HYPER);
+    
+    g_object_unref (tmp);
+  }
+ 
+  return pbuf;
+}
+static gboolean
+task_item_expose_event (GtkWidget      *widget,
+		        GdkEventExpose *event)
+{
+  cairo_t *cr;
+  TaskItem *item;
+  GdkRectangle area;
+  TaskItemPrivate *priv;
+  GdkPixbuf *desat;
+  GdkPixbuf *pbuf;
+  
+  g_return_val_if_fail (widget != NULL, FALSE);
+  g_return_val_if_fail (TASK_IS_ITEM (widget), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+  
+  item = TASK_ITEM (widget);
+  priv = item->priv;
+  
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (priv->window), FALSE);
+  
+  area = priv->area;
+  cr = gdk_cairo_create (event->window);
+  
+  pbuf = priv->pixbuf;
+  desat = NULL;
+  
+  gint size = MIN (area.height, area.width);
+  gboolean active = matewnck_window_is_active (priv->window);
+  gboolean attention = matewnck_window_or_transient_needs_attention (priv->window);
+  
+  if (GDK_IS_PIXBUF (pbuf) && 
+      gdk_pixbuf_get_width (pbuf) != size &&
+      gdk_pixbuf_get_height (pbuf) != size)
+  {
+    g_object_unref (pbuf);
+    pbuf = NULL;
+  }
+  
+  if (active)
+  {
+    cairo_rectangle (cr, area.x + .5, area.y - 4, area.width - 1, area.height + 8);
+    cairo_set_source_rgba (cr, .8, .8, .8, .2);
+    cairo_fill_preserve (cr);
+    
+    cairo_set_line_width (cr, 1);
+    cairo_set_source_rgba (cr, .8, .8, .8, .4);
+    cairo_stroke (cr);
+  }
+  
+  if (!pbuf)
+  {
+    pbuf = priv->pixbuf = task_item_sized_pixbuf_for_window (item, priv->window, size);
+  }
+  
+  if (active || priv->mouse_over || attention)
+  {
+    gdk_cairo_set_source_pixbuf (cr, 
+                                 pbuf, 
+                                 (area.x + (area.width - gdk_pixbuf_get_width (pbuf)) / 2), 
+                                 (area.y + (area.height - gdk_pixbuf_get_height (pbuf)) / 2));
+  }
+  else
+  {
+    desat = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
+                            TRUE,
+                            gdk_pixbuf_get_bits_per_sample (pbuf),
+                            gdk_pixbuf_get_width (pbuf),
+                            gdk_pixbuf_get_height (pbuf));
+    
+    if (desat)
+    {
+      gdk_pixbuf_saturate_and_pixelate (pbuf,
+                                        desat,
+                                        0,
+                                       FALSE);
+    }
+    else /* just paint the colored version as a fallback */
+    {
+      desat = pbuf;
+    }
+    gdk_cairo_set_source_pixbuf (cr, 
+                                 desat, 
+                                 (area.x + (area.width - gdk_pixbuf_get_width (desat)) / 2), 
+                                 (area.y + (area.height - gdk_pixbuf_get_height (desat)) / 2));
+  }
+  if (!priv->mouse_over && attention) /* urgent */
+  {
+    GTimeVal current_time;
+    g_get_current_time (&current_time);
+    
+    gdouble ms = (current_time.tv_sec - priv->urgent_time.tv_sec) * 1000 + 
+                 (current_time.tv_usec - priv->urgent_time.tv_usec) / 1000;
+    
+    gdouble alpha = .66 + (cos (3.15 * ms / 600) / 3);
+    cairo_paint_with_alpha (cr, alpha);
+  }
+  else if (priv->mouse_over || active) /* focused */
+  {
+    cairo_paint (cr);
+  }
+  else /* not focused */
+  {
+    cairo_paint_with_alpha (cr, .65);
+  }
+  
+  if (GDK_IS_PIXBUF (desat))
+    g_object_unref (desat);
+ 
+  cairo_destroy (cr);
+  
+  return FALSE;
+}
+
+static void
+on_size_allocate (GtkWidget     *widget,
+                  GtkAllocation *allocation,
+                  TaskItem      *item)
+{
+  TaskItemPrivate *priv;
+  
+  if (allocation->width != allocation->height + 6)
+    gtk_widget_set_size_request (widget, allocation->height + 6, -1);
+
+  g_return_if_fail (TASK_IS_ITEM (item));
+  
+  priv = item->priv;
+  priv->area.x = allocation->x;
+  priv->area.y = allocation->y;
+  priv->area.width = allocation->width;
+  priv->area.height = allocation->height;
+
+  update_hints (item);    
+}
+
+static gboolean
+on_button_pressed (GtkWidget      *button,
+                   GdkEventButton *event,
+                   TaskItem       *item)
+{
+  MatewnckWindow *window;
+  g_return_val_if_fail (TASK_IS_ITEM (item), FALSE);
+  window = item->priv->window;
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (window), FALSE);
+
+  if (event->button == 3)
+  {
+    GtkWidget *menu = matewnck_action_menu_new (window);
+    gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL,
+                    event->button, event->time);
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+static gboolean
+on_query_tooltip (GtkWidget *widget,
+                  gint x, gint y, 
+                  gboolean keyboard_mode, 
+                  GtkTooltip *tooltip,
+                  TaskItem *item)
+{
+  MatewnckWindow *window = item->priv->window;
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (window), FALSE);
+
+  gtk_tooltip_set_text (tooltip, matewnck_window_get_name(window));
+  gtk_tooltip_set_icon (tooltip, matewnck_window_get_icon (window));
+
+  return TRUE;
+}
+
+static gboolean
+on_enter_notify (GtkWidget *widget,
+                 GdkEventCrossing *event,
+                 TaskItem *item)
+{
+  g_return_val_if_fail (TASK_IS_ITEM (item), FALSE);
+  
+  item->priv->mouse_over = TRUE;
+  gtk_widget_queue_draw (widget);
+  
+  return FALSE;
+}
+
+static gboolean
+on_leave_notify (GtkWidget *widget,
+                 GdkEventCrossing *event,
+                 TaskItem *item)
+{
+  g_return_val_if_fail (TASK_IS_ITEM (item), FALSE);
+  
+  item->priv->mouse_over = FALSE;
+  gtk_widget_queue_draw (widget);
+
+  return FALSE;
+}
+
+static gboolean
+on_blink (TaskItem *item)
+{
+  g_return_val_if_fail (TASK_IS_ITEM (item), FALSE);
+
+  gtk_widget_queue_draw (GTK_WIDGET (item));
+
+  if (matewnck_window_or_transient_needs_attention (item->priv->window))
+  {
+    return TRUE;
+  }
+  else
+  {
+    item->priv->timer = 0;
+    return FALSE;
+  }
+}
+
+static void
+on_window_state_changed (MatewnckWindow      *window, 
+                         MatewnckWindowState  changed_mask,
+                         MatewnckWindowState  new_state,
+                         TaskItem        *item)
+{
+  g_return_if_fail (MATEWNCK_IS_WINDOW (window));
+  g_return_if_fail (TASK_IS_ITEM (item));
+  
+  TaskItemPrivate *priv = item->priv;
+  
+  if (new_state & MATEWNCK_WINDOW_STATE_URGENT && !priv->timer)
+  {
+    priv->timer = g_timeout_add (30, (GSourceFunc)on_blink, item);
+    g_get_current_time (&priv->urgent_time);
+  }
+  
+  task_item_set_visibility (item);
+}
+
+static void
+on_window_workspace_changed (MatewnckWindow *window, TaskItem *item)
+{
+  g_return_if_fail (TASK_IS_ITEM (item));
+
+  task_item_set_visibility (item);
+}
+
+static void on_window_icon_changed (MatewnckWindow *window, TaskItem *item)
+{
+  TaskItemPrivate *priv;
+  
+  g_return_if_fail (TASK_IS_ITEM (item));
+  
+  priv = item->priv;
+  
+  if (GDK_IS_PIXBUF (priv->pixbuf))
+  {
+    g_object_unref (priv->pixbuf);
+    priv->pixbuf = NULL;
+  }
+  
+  gtk_widget_queue_draw (GTK_WIDGET (item));
+}
+
+static void
+on_screen_active_window_changed (MatewnckScreen    *screen,
+                                 MatewnckWindow    *old_window,
+                                 TaskItem      *item)
+{
+  MatewnckWindow *window;
+  TaskItemPrivate *priv;
+
+  g_return_if_fail (TASK_IS_ITEM (item));
+
+  priv = item->priv;
+  window = priv->window;
+  
+  g_return_if_fail (MATEWNCK_IS_WINDOW (window));
+  
+  if ((MATEWNCK_IS_WINDOW (old_window) && window == old_window) || 
+       window == matewnck_screen_get_active_window (screen))
+  {
+    /* queue a draw to reflect that we are [no longer] the active window */
+    gtk_widget_queue_draw (GTK_WIDGET (item));
+  }
+}
+
+static void
+on_screen_active_workspace_changed (MatewnckScreen    *screen,
+                                    MatewnckWorkspace *old_workspace,
+                                    TaskItem      *item)
+{
+  g_return_if_fail (TASK_IS_ITEM (item));
+
+  task_item_set_visibility (item);
+}
+
+static void
+on_screen_active_viewport_changed (MatewnckScreen    *screen,
+                                   TaskItem      *item)
+{
+  g_return_if_fail (TASK_IS_ITEM (item));
+
+  task_item_set_visibility (item);
+}
+
+static void
+on_screen_window_closed (MatewnckScreen  *screen,
+                         MatewnckWindow  *window,
+                         TaskItem    *item)
+{
+  TaskItemPrivate *priv;
+ 
+  g_return_if_fail (TASK_IS_ITEM (item));
+  priv = item->priv;
+  g_return_if_fail (MATEWNCK_IS_WINDOW (priv->window));
+
+  if (priv->window == window)
+  {
+    g_signal_handlers_disconnect_by_func (screen, G_CALLBACK (on_screen_window_closed), item);
+    g_signal_handlers_disconnect_by_func (screen, G_CALLBACK (on_screen_active_window_changed), item);
+    g_signal_handlers_disconnect_by_func (screen, G_CALLBACK (on_screen_active_workspace_changed), item);
+    g_signal_handlers_disconnect_by_func (screen, G_CALLBACK (on_screen_window_closed), item);
+    g_signal_handlers_disconnect_by_func (window, G_CALLBACK (on_window_workspace_changed), item);
+    g_signal_handlers_disconnect_by_func (window, G_CALLBACK (on_window_state_changed), item);
+  
+    g_signal_emit (G_OBJECT (item), task_item_signals[TASK_ITEM_CLOSED_SIGNAL], 0);
+  }
+}
+
+static gboolean
+activate_window (GtkWidget *widget)
+{
+  gint active;
+  TaskItemPrivate *priv;
+
+  g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
+  g_return_val_if_fail (TASK_IS_ITEM (widget), FALSE);
+
+  priv = TASK_ITEM (widget)->priv;
+  
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (priv->window), FALSE);  
+
+  active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (widget), "drag-true"));
+
+  if (active)
+  { 
+    MatewnckWindow *window;
+
+    window = priv->window;
+    if (MATEWNCK_IS_WINDOW (window))
+      matewnck_window_activate (window, time (NULL));
+  }
+  
+  g_object_set_data (G_OBJECT (widget), "drag-true", GINT_TO_POINTER (0));
+  
+  return FALSE;
+}
+
+static void
+on_drag_leave (GtkWidget      *item,
+               GdkDragContext *context,
+               guint           time)
+{
+  g_object_set_data (G_OBJECT (item), "drag-true", GINT_TO_POINTER (0));
+}
+
+static gboolean
+on_drag_motion (GtkWidget      *item,
+                GdkDragContext *context,
+                gint            x, 
+                gint            y,
+                guint           t)
+{
+  gint active;
+
+  active = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (item), "drag-true"));
+  
+  if (!active)
+  {
+    g_object_set_data (G_OBJECT (item), "drag-true", GINT_TO_POINTER (1));
+
+    g_timeout_add (1000, (GSourceFunc)activate_window, item);
+  }
+
+  return FALSE;
+}
+
+static void
+task_item_setup_atk (TaskItem *item)
+{
+  TaskItemPrivate *priv;
+  GtkWidget *widget;
+  AtkObject *atk;
+  MatewnckWindow *window;
+  
+  g_return_if_fail (TASK_IS_ITEM (item));
+  
+  widget = GTK_WIDGET (item);
+  priv = item->priv;
+  window = priv->window;
+  
+  g_return_if_fail (MATEWNCK_IS_WINDOW (window));
+  
+  atk = gtk_widget_get_accessible (widget);
+  atk_object_set_name (atk, _("Window Task Button"));
+  atk_object_set_description (atk, matewnck_window_get_name (window));
+  atk_object_set_role (atk, ATK_ROLE_PUSH_BUTTON);
+}
+
+static void
+task_item_finalize (GObject *object)
+{
+  TaskItemPrivate *priv;
+  priv = TASK_ITEM_GET_PRIVATE (object);
+
+  /* remove timer */
+  if (priv->timer)
+  {
+    g_source_remove (priv->timer);
+  }
+  
+  if (GDK_IS_PIXBUF (priv->pixbuf))
+  {
+    g_object_unref (priv->pixbuf);
+  }
+
+  G_OBJECT_CLASS (task_item_parent_class)->finalize (object);
+}
+
+static void
+task_item_class_init (TaskItemClass *klass)
+{
+  GObjectClass *obj_class      = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  obj_class->finalize = task_item_finalize;
+  widget_class->expose_event = task_item_expose_event;
+  widget_class->size_request = task_item_size_request;
+
+  g_type_class_add_private (obj_class, sizeof (TaskItemPrivate));
+  
+  task_item_signals [TASK_ITEM_CLOSED_SIGNAL] =
+    g_signal_new ("task-item-closed",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION,
+                  G_STRUCT_OFFSET (TaskItemClass, itemclosed),
+                  NULL, NULL,
+                  g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+}
+
+static void
+task_item_init (TaskItem *item)
+{
+  TaskItemPrivate *priv;
+  priv = item->priv = TASK_ITEM_GET_PRIVATE (item);
+
+  priv->timer = 0;
+}
+
+GtkWidget *
+task_item_new (MatewnckWindow *window)
+{
+  GtkWidget *item = NULL;
+  TaskItem *task;
+  TaskItemPrivate *priv;
+  MatewnckScreen *screen;
+  
+  g_return_val_if_fail (MATEWNCK_IS_WINDOW (window), item);
+
+  item = g_object_new (TASK_TYPE_ITEM, 
+                       "has-tooltip", TRUE,
+                       "visible-window", FALSE, 
+                       "above-child", TRUE, 
+                       NULL);
+                       
+  gtk_widget_add_events (item, GDK_ALL_EVENTS_MASK);
+  gtk_container_set_border_width (GTK_CONTAINER (item), 0);
+
+  task = TASK_ITEM (item);
+  priv = task->priv;  
+  priv->window = window;
+  
+  screen = matewnck_window_get_screen (window);
+  priv->screen = screen;
+  
+  gtk_drag_dest_set (item,
+                     GTK_DEST_DEFAULT_MOTION | GTK_DEST_DEFAULT_DROP,
+                     drop_types, n_drop_types,
+                     GDK_ACTION_COPY);
+  gtk_drag_dest_add_uri_targets (item);
+  gtk_drag_dest_add_text_targets (item);
+  g_signal_connect (item, "drag-motion", 
+                    G_CALLBACK (on_drag_motion), NULL);
+  g_signal_connect (item, "drag-leave", 
+                    G_CALLBACK (on_drag_leave), NULL);
+  
+  g_signal_connect (screen, "viewports-changed",
+                    G_CALLBACK (on_screen_active_viewport_changed), item);
+  g_signal_connect (screen, "active-window-changed",
+                    G_CALLBACK (on_screen_active_window_changed), item);
+  g_signal_connect (screen, "active-workspace-changed",
+                    G_CALLBACK (on_screen_active_workspace_changed), item);
+  g_signal_connect (screen, "window-closed",
+                    G_CALLBACK (on_screen_window_closed), item);
+                    
+  g_signal_connect (window, "workspace-changed",
+  		    G_CALLBACK (on_window_workspace_changed), item);
+  g_signal_connect (window, "state-changed",
+                    G_CALLBACK (on_window_state_changed), item);
+  g_signal_connect (window, "icon-changed",
+                    G_CALLBACK (on_window_icon_changed), item);
+  
+  g_signal_connect (item, "button-release-event",
+                    G_CALLBACK (on_task_item_button_released), item);
+  g_signal_connect (item, "button-press-event",
+                    G_CALLBACK (on_button_pressed), item);
+  g_signal_connect (item, "size-allocate",
+                    G_CALLBACK (on_size_allocate), item);
+  g_signal_connect (item, "query-tooltip", 
+                    G_CALLBACK (on_query_tooltip), item);
+  g_signal_connect (item, "enter-notify-event",
+                    G_CALLBACK (on_enter_notify), item);
+  g_signal_connect (item, "leave-notify-event",
+                    G_CALLBACK (on_leave_notify), item);
+  g_signal_connect (item, "drag-motion",
+                    G_CALLBACK (on_drag_motion), item);
+  g_signal_connect (item, "drag-leave",
+                    G_CALLBACK (on_drag_leave), item);
+                    
+  task_item_set_visibility (task);
+  task_item_setup_atk (task);
+  
+  return item;
+}