notification: import GdNotification

1 files changed, 928 insertions, 0 deletions

diff --git a/libgd/gd-notification.c b/libgd/gd-notification.c
new file mode 100644
index 0000000..31d96d5
--- /dev/null
+++ b/libgd/gd-notification.c
@@ -0,0 +1,928 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * gd-notification
+ * Based on gtk-notification from gnome-contacts:
+ * http://git.gnome.org/browse/gnome-contacts/tree/src/gtk-notification.c?id=3.3.91
+ *
+ * Copyright (C) Erick Pérez Castellanos 2011 <erick.red@gmail.com>
+ * Copyright (C) 2012 Red Hat, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.";
+ */
+
+#include "gd-notification.h"
+
+/**
+ * SECTION:gdnotification
+ * @short_description: Report notification messages to the user
+ * @include: gtk/gtk.h
+ * @see_also: #GtkStatusbar, #GtkMessageDialog, #GtkInfoBar
+ *
+ * #GdNotification is a widget made for showing notifications to
+ * the user, allowing them to close the notification or wait for it
+ * to time out.
+ *
+ * #GdNotification provides one signal (#GdNotification::dismissed), for when the notification
+ * times out or is closed.
+ *
+ */
+
+#define GTK_PARAM_READWRITE G_PARAM_READWRITE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB
+#define SHADOW_OFFSET_X 2
+#define SHADOW_OFFSET_Y 3
+#define ANIMATION_TIME 200 /* msec */
+#define ANIMATION_STEP 40 /* msec */
+
+enum {
+  PROP_0,
+  PROP_TIMEOUT,
+  PROP_SHOW_CLOSE_BUTTON
+};
+
+struct _GdNotificationPrivate {
+  GtkWidget *close_button;
+  gboolean show_close_button;
+
+  GdkWindow *bin_window;
+
+  int animate_y; /* from 0 to allocation.height */
+  gboolean waiting_for_viewable;
+  gboolean revealed;
+  gboolean dismissed;
+  gboolean sent_dismissed;
+  guint animate_timeout;
+
+  gint timeout;
+  guint timeout_source_id;
+};
+
+enum {
+  DISMISSED,
+  LAST_SIGNAL
+};
+
+static guint notification_signals[LAST_SIGNAL] = { 0 };
+
+static gboolean gd_notification_draw                           (GtkWidget       *widget,
+                                                                 cairo_t         *cr);
+static void     gd_notification_get_preferred_width            (GtkWidget       *widget,
+                                                                 gint            *minimum_size,
+                                                                 gint            *natural_size);
+static void     gd_notification_get_preferred_height_for_width (GtkWidget       *widget,
+                                                                 gint             width,
+                                                                 gint            *minimum_height,
+                                                                 gint            *natural_height);
+static void     gd_notification_get_preferred_height           (GtkWidget       *widget,
+                                                                 gint            *minimum_size,
+                                                                 gint            *natural_size);
+static void     gd_notification_get_preferred_width_for_height (GtkWidget       *widget,
+                                                                 gint             height,
+                                                                 gint            *minimum_width,
+                                                                 gint            *natural_width);
+static void     gd_notification_size_allocate                  (GtkWidget       *widget,
+                                                                 GtkAllocation   *allocation);
+static gboolean gd_notification_timeout_cb                     (gpointer         user_data);
+static void     gd_notification_show                           (GtkWidget       *widget);
+static void     gd_notification_add                            (GtkContainer    *container,
+                                                                 GtkWidget       *child);
+
+/* signals handlers */
+static void     gd_notification_close_button_clicked_cb        (GtkWidget       *widget,
+                                                                 gpointer         user_data);
+
+G_DEFINE_TYPE(GdNotification, gd_notification, GTK_TYPE_BIN);
+
+static void
+gd_notification_init (GdNotification *notification)
+{
+  GtkWidget *close_button_image;
+  GtkStyleContext *context;
+  GdNotificationPrivate *priv;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (notification));
+  gtk_style_context_add_class (context, "app-notification");
+
+  gtk_widget_set_halign (GTK_WIDGET (notification), GTK_ALIGN_CENTER);
+  gtk_widget_set_valign (GTK_WIDGET (notification), GTK_ALIGN_START);
+
+  gtk_widget_set_has_window (GTK_WIDGET (notification), TRUE);
+
+  gtk_widget_push_composite_child ();
+
+  priv = notification->priv =
+    G_TYPE_INSTANCE_GET_PRIVATE (notification,
+                                 GD_TYPE_NOTIFICATION,
+                                 GdNotificationPrivate);
+
+  priv->animate_y = 0;
+  priv->close_button = gtk_button_new ();
+  gtk_widget_set_parent (priv->close_button, GTK_WIDGET (notification));
+  gtk_widget_show (priv->close_button);
+  g_object_set (priv->close_button,
+                "relief", GTK_RELIEF_NONE,
+                "focus-on-click", FALSE,
+                NULL);
+  g_signal_connect (priv->close_button,
+                    "clicked",
+                    G_CALLBACK (gd_notification_close_button_clicked_cb),
+                    notification);
+  close_button_image = gtk_image_new_from_icon_name ("window-close-symbolic", GTK_ICON_SIZE_BUTTON);
+  gtk_button_set_image (GTK_BUTTON (notification->priv->close_button), close_button_image);
+
+  gtk_widget_pop_composite_child ();
+
+  priv->timeout_source_id = 0;
+}
+
+static void
+gd_notification_finalize (GObject *object)
+{
+  GdNotification *notification;
+  GdNotificationPrivate *priv;
+
+  g_return_if_fail (GTK_IS_NOTIFICATION (object));
+
+  notification = GD_NOTIFICATION (object);
+  priv = notification->priv;
+
+  if (priv->animate_timeout != 0)
+    g_source_remove (priv->animate_timeout);
+
+  if (priv->timeout_source_id != 0)
+    g_source_remove (priv->timeout_source_id);
+
+  G_OBJECT_CLASS (gd_notification_parent_class)->finalize (object);
+}
+
+static void
+gd_notification_destroy (GtkWidget *widget)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+
+  if (!priv->sent_dismissed)
+    {
+      g_signal_emit (notification, notification_signals[DISMISSED], 0);
+      priv->sent_dismissed = TRUE;
+    }
+
+  if (priv->close_button)
+    {
+      gtk_widget_unparent (priv->close_button);
+      priv->close_button = NULL;
+    }
+
+  GTK_WIDGET_CLASS (gd_notification_parent_class)->destroy (widget);
+}
+
+static void
+gd_notification_realize (GtkWidget *widget)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkBin *bin = GTK_BIN (widget);
+  GtkAllocation allocation;
+  GtkWidget *child;
+  GdkWindow *window;
+  GdkWindowAttr attributes;
+  gint attributes_mask;
+
+  gtk_widget_set_realized (widget, TRUE);
+
+  gtk_widget_get_allocation (widget, &allocation);
+
+  attributes.x = allocation.x;
+  attributes.y = allocation.y;
+  attributes.width = allocation.width;
+  attributes.height = allocation.height;
+  attributes.window_type = GDK_WINDOW_CHILD;
+  attributes.wclass = GDK_INPUT_OUTPUT;
+  attributes.visual = gtk_widget_get_visual (widget);
+
+  attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK;
+
+  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
+
+  window = gdk_window_new (gtk_widget_get_parent_window (widget),
+                           &attributes, attributes_mask);
+  gtk_widget_set_window (widget, window);
+  gdk_window_set_user_data (window, notification);
+
+  attributes.x = 0;
+  attributes.y = attributes.height + priv->animate_y;
+  attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK | GDK_VISIBILITY_NOTIFY_MASK;
+
+  priv->bin_window = gdk_window_new (window, &attributes, attributes_mask);
+  gdk_window_set_user_data (priv->bin_window, notification);
+
+  child = gtk_bin_get_child (bin);
+  if (child)
+    gtk_widget_set_parent_window (child, priv->bin_window);
+  gtk_widget_set_parent_window (priv->close_button, priv->bin_window);
+
+  gdk_window_show (priv->bin_window);
+}
+
+static void
+gd_notification_unrealize (GtkWidget *widget)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+
+  gdk_window_set_user_data (priv->bin_window, NULL);
+  gdk_window_destroy (priv->bin_window);
+  priv->bin_window = NULL;
+
+  GTK_WIDGET_CLASS (gd_notification_parent_class)->unrealize (widget);
+}
+
+static int
+animation_target (GdNotification *notification)
+{
+  GdNotificationPrivate *priv = notification->priv;
+  GtkAllocation allocation;
+
+  if (priv->revealed) {
+    gtk_widget_get_allocation (GTK_WIDGET (notification), &allocation);
+    return allocation.height;
+  } else {
+    return 0;
+  }
+}
+
+static gboolean
+animation_timeout_cb (gpointer user_data)
+{
+  GdNotification *notification = GD_NOTIFICATION (user_data);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkAllocation allocation;
+  int target, delta;
+
+  target = animation_target (notification);
+
+  if (priv->animate_y != target) {
+    gtk_widget_get_allocation (GTK_WIDGET (notification), &allocation);
+
+    delta = allocation.height * ANIMATION_STEP / ANIMATION_TIME;
+
+    if (priv->revealed)
+      priv->animate_y += delta;
+    else
+      priv->animate_y -= delta;
+
+    priv->animate_y = CLAMP (priv->animate_y, 0, allocation.height);
+
+    if (priv->bin_window != NULL)
+      gdk_window_move (priv->bin_window,
+                       0,
+                       -allocation.height + priv->animate_y);
+    return TRUE;
+  }
+
+  if (priv->dismissed && priv->animate_y == 0)
+    gtk_widget_destroy (GTK_WIDGET (notification));
+
+  priv->animate_timeout = 0;
+  return FALSE;
+}
+
+static void
+start_animation (GdNotification *notification)
+{
+  GdNotificationPrivate *priv = notification->priv;
+  int target;
+
+  if (priv->animate_timeout != 0)
+    return; /* Already running */
+
+  target = animation_target (notification);
+  if (priv->animate_y != target)
+    notification->priv->animate_timeout =
+      gdk_threads_add_timeout (ANIMATION_STEP,
+                               animation_timeout_cb,
+                               notification);
+}
+
+static void
+gd_notification_show (GtkWidget *widget)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+
+  GTK_WIDGET_CLASS (gd_notification_parent_class)->show (widget);
+  priv->revealed = TRUE;
+  priv->waiting_for_viewable = TRUE;
+}
+
+static void
+gd_notification_hide (GtkWidget *widget)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+
+  GTK_WIDGET_CLASS (gd_notification_parent_class)->hide (widget);
+  priv->revealed = FALSE;
+  priv->waiting_for_viewable = FALSE;
+}
+
+static void
+gd_notification_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+  GdNotification *notification = GD_NOTIFICATION (object);
+
+  g_return_if_fail (GTK_IS_NOTIFICATION (object));
+
+  switch (prop_id) {
+  case PROP_TIMEOUT:
+    gd_notification_set_timeout (notification,
+                                 g_value_get_int (value));
+    break;
+  case PROP_SHOW_CLOSE_BUTTON:
+    gd_notification_set_show_close_button (notification,
+                                           g_value_get_boolean (value));
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    break;
+  }
+}
+
+static void
+gd_notification_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+  g_return_if_fail (GTK_IS_NOTIFICATION (object));
+  GdNotification *notification = GD_NOTIFICATION (object);
+
+  switch (prop_id) {
+  case PROP_TIMEOUT:
+    g_value_set_int (value, notification->priv->timeout);
+    break;
+  case PROP_SHOW_CLOSE_BUTTON:
+    g_value_set_boolean (value,
+                         notification->priv->show_close_button);
+    break;
+  default:
+    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+    break;
+  }
+}
+
+static void
+gd_notification_forall (GtkContainer *container,
+                         gboolean      include_internals,
+                         GtkCallback   callback,
+                         gpointer      callback_data)
+{
+  GtkBin *bin = GTK_BIN (container);
+  GdNotification *notification = GD_NOTIFICATION (container);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkWidget *child;
+
+  child = gtk_bin_get_child (bin);
+  if (child)
+    (* callback) (child, callback_data);
+
+  if (include_internals)
+    (* callback) (priv->close_button, callback_data);
+}
+
+static gboolean
+gd_notification_visibility_notify_event (GtkWidget          *widget,
+                                          GdkEventVisibility  *event)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+
+  if (!gtk_widget_get_visible (widget))
+    return FALSE;
+
+  if (priv->waiting_for_viewable)
+    {
+      start_animation (notification);
+      priv->waiting_for_viewable = FALSE;
+    }
+
+  if (notification->priv->timeout_source_id == 0 &&
+      notification->priv->timeout != -1)
+    notification->priv->timeout_source_id =
+      gdk_threads_add_timeout (notification->priv->timeout * 1000,
+                               gd_notification_timeout_cb,
+                               widget);
+
+  return FALSE;
+}
+
+static void
+gd_notification_class_init (GdNotificationClass *klass)
+{
+  GObjectClass* object_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass* widget_class = GTK_WIDGET_CLASS(klass);
+  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (klass);
+
+  object_class->finalize = gd_notification_finalize;
+  object_class->set_property = gd_notification_set_property;
+  object_class->get_property = gd_notification_get_property;
+
+  widget_class->show = gd_notification_show;
+  widget_class->hide = gd_notification_hide;
+  widget_class->destroy = gd_notification_destroy;
+  widget_class->get_preferred_width = gd_notification_get_preferred_width;
+  widget_class->get_preferred_height_for_width = gd_notification_get_preferred_height_for_width;
+  widget_class->get_preferred_height = gd_notification_get_preferred_height;
+  widget_class->get_preferred_width_for_height = gd_notification_get_preferred_width_for_height;
+  widget_class->size_allocate = gd_notification_size_allocate;
+  widget_class->draw = gd_notification_draw;
+  widget_class->realize = gd_notification_realize;
+  widget_class->unrealize = gd_notification_unrealize;
+  widget_class->visibility_notify_event = gd_notification_visibility_notify_event;
+
+  container_class->add = gd_notification_add;
+  container_class->forall = gd_notification_forall;
+  gtk_container_class_handle_border_width (container_class);
+
+
+  /**
+   * GdNotification:timeout:
+   *
+   * The time it takes to hide the widget, in seconds.
+   *
+   * Since: 0.1
+   */
+  g_object_class_install_property (object_class,
+                                   PROP_TIMEOUT,
+                                   g_param_spec_int("timeout", "timeout",
+                                                    "The time it takes to hide the widget, in seconds",
+                                                    -1, G_MAXINT, -1,
+                                                    GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+  g_object_class_install_property (object_class,
+                                   PROP_SHOW_CLOSE_BUTTON,
+                                   g_param_spec_boolean("show-close-button", "show-close-button",
+                                                        "Whether to show a stock close button that dismisses the notification",
+                                                        TRUE,
+                                                        GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT));
+
+  notification_signals[DISMISSED] = g_signal_new ("dismissed",
+                                                  G_OBJECT_CLASS_TYPE (klass),
+                                                  G_SIGNAL_RUN_LAST,
+                                                  G_STRUCT_OFFSET (GdNotificationClass, dismissed),
+                                                  NULL,
+                                                  NULL,
+                                                  g_cclosure_marshal_VOID__VOID,
+                                                  G_TYPE_NONE,
+                                                  0);
+
+  g_type_class_add_private (object_class, sizeof (GdNotificationPrivate));
+}
+
+static void
+draw_shadow_box (cairo_t *cr, GdkRectangle rect, int left_border, int right_border,
+                 int bottom_border, double inner_alpha)
+{
+  cairo_pattern_t *pattern;
+  cairo_matrix_t matrix;
+  double x0, x1, x2, x3;
+  double y0, y2, y3;
+
+  cairo_save (cr);
+
+  x0 = rect.x;
+  x1 = rect.x + left_border;
+  x2 = rect.x + rect.width - right_border;
+  x3 = rect.x + rect.width;
+
+  y0 = rect.y;
+  y2 = rect.y + rect.height - bottom_border;
+  y3 = rect.y + rect.height;
+
+  /* Bottom border */
+
+  pattern = cairo_pattern_create_linear(0, y2, 0, y3);
+
+  cairo_pattern_add_color_stop_rgba(pattern, 0.0, 0, 0, 0, inner_alpha);
+  cairo_pattern_add_color_stop_rgba(pattern, 1.0, 0, 0, 0, 0.0);
+
+  cairo_set_source(cr, pattern);
+  cairo_pattern_destroy(pattern);
+
+  cairo_rectangle(cr, x1, y2, x2 - x1, y3 - y2);
+  cairo_fill(cr);
+
+  /* Left border */
+
+  pattern = cairo_pattern_create_linear(x0, 0, x1, 0);
+
+  cairo_pattern_add_color_stop_rgba(pattern, 0.0, 0, 0, 0, 0.0);
+  cairo_pattern_add_color_stop_rgba(pattern, 1.0, 0, 0, 0, inner_alpha);
+
+  cairo_set_source(cr, pattern);
+  cairo_pattern_destroy(pattern);
+
+  cairo_rectangle(cr, x0, y0, x1 - x0, y2 - y0);
+  cairo_fill(cr);
+
+  /* Right border */
+
+  pattern = cairo_pattern_create_linear(x2, 0, x3, 0);
+
+  cairo_pattern_add_color_stop_rgba(pattern, 0.0, 0, 0, 0, inner_alpha);
+  cairo_pattern_add_color_stop_rgba(pattern, 1.0, 0, 0, 0, 0.0);
+
+  cairo_set_source(cr, pattern);
+  cairo_pattern_destroy(pattern);
+
+  cairo_rectangle(cr, x2, y0, x3 - x2, y2 - y0);
+  cairo_fill(cr);
+
+  /* SW corner */
+
+  pattern = cairo_pattern_create_radial(0, 0, 0, 0.0, 0, 1.0);
+  cairo_pattern_add_color_stop_rgba(pattern, 0.0, 0, 0, 0, inner_alpha);
+  cairo_pattern_add_color_stop_rgba(pattern, 1.0, 0, 0, 0, 0.0);
+
+  cairo_matrix_init_scale (&matrix, 1.0 / left_border, 1.0 / bottom_border);
+  cairo_matrix_translate (&matrix, - x1, -y2);
+  cairo_pattern_set_matrix (pattern, &matrix);
+
+  cairo_set_source(cr, pattern);
+  cairo_pattern_destroy(pattern);
+
+  cairo_rectangle(cr, x0, y2, x1 - x0, y3 - y2);
+  cairo_fill(cr);
+
+  /* SE corner */
+
+  pattern = cairo_pattern_create_radial(0, 0, 0, 0, 0, 1.0);
+  cairo_pattern_add_color_stop_rgba(pattern, 0.0, 0.0, 0, 0, inner_alpha);
+  cairo_pattern_add_color_stop_rgba(pattern, 1.0, 0.0, 0, 0, 0.0);
+
+  cairo_matrix_init_scale (&matrix, 1.0 / left_border, 1.0 / bottom_border);
+  cairo_matrix_translate (&matrix, - x2, -y2);
+  cairo_pattern_set_matrix (pattern, &matrix);
+
+  cairo_set_source(cr, pattern);
+  cairo_pattern_destroy(pattern);
+
+  cairo_rectangle(cr, x2, y2, x3 - x2, y3 - y2);
+  cairo_fill(cr);
+
+  cairo_restore (cr);
+}
+
+static void
+get_padding_and_border (GdNotification *notification,
+                        GtkBorder *border)
+{
+  GtkStyleContext *context;
+  GtkStateFlags state;
+  GtkBorder tmp;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (notification));
+  state = gtk_widget_get_state_flags (GTK_WIDGET (notification));
+
+  gtk_style_context_get_padding (context, state, border);
+
+  gtk_style_context_get_border (context, state, &tmp);
+  border->top += tmp.top;
+  border->right += tmp.right;
+  border->bottom += tmp.bottom;
+  border->left += tmp.left;
+}
+
+static gboolean
+gd_notification_draw (GtkWidget *widget, cairo_t *cr)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkStyleContext *context;
+  GdkRectangle rect;
+  int inner_radius;
+
+  if (gtk_cairo_should_draw_window (cr, priv->bin_window))
+    {
+      gtk_widget_get_allocation (widget, &rect);
+
+      context = gtk_widget_get_style_context(widget);
+
+      inner_radius = 5;
+      draw_shadow_box (cr, rect, SHADOW_OFFSET_X + inner_radius, SHADOW_OFFSET_X + inner_radius,
+                       SHADOW_OFFSET_Y + inner_radius, 0.8);
+
+      gtk_style_context_save (context);
+      gtk_render_background (context,  cr,
+                             SHADOW_OFFSET_X, 0,
+                             gtk_widget_get_allocated_width (widget) - 2 *SHADOW_OFFSET_X,
+                             gtk_widget_get_allocated_height (widget) - SHADOW_OFFSET_Y);
+      gtk_render_frame (context,cr,
+                        SHADOW_OFFSET_X, 0,
+                        gtk_widget_get_allocated_width (widget) - 2 *SHADOW_OFFSET_X,
+                        gtk_widget_get_allocated_height (widget) - SHADOW_OFFSET_Y);
+
+      gtk_style_context_restore (context);
+
+      if (GTK_WIDGET_CLASS (gd_notification_parent_class)->draw)
+        GTK_WIDGET_CLASS (gd_notification_parent_class)->draw(widget, cr);
+    }
+
+  return FALSE;
+}
+
+static void
+gd_notification_add (GtkContainer *container,
+                      GtkWidget    *child)
+{
+  GtkBin *bin = GTK_BIN (container);
+  GdNotification *notification = GD_NOTIFICATION (bin);
+  GdNotificationPrivate *priv = notification->priv;
+
+  g_return_if_fail (gtk_bin_get_child (bin) == NULL);
+
+  gtk_widget_set_parent_window (child, priv->bin_window);
+
+  GTK_CONTAINER_CLASS (gd_notification_parent_class)->add (container, child);
+}
+
+
+static void
+gd_notification_get_preferred_width (GtkWidget *widget, gint *minimum_size, gint *natural_size)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkBin *bin = GTK_BIN (widget);
+  gint child_min, child_nat;
+  GtkWidget *child;
+  GtkBorder padding;
+  gint minimum, natural;
+
+  get_padding_and_border (notification, &padding);
+
+  minimum = 0;
+  natural = 0;
+
+  child = gtk_bin_get_child (bin);
+  if (child && gtk_widget_get_visible (child))
+    {
+      gtk_widget_get_preferred_width (child,
+                                      &child_min, &child_nat);
+      minimum += child_min;
+      natural += child_nat;
+    }
+
+  if (priv->show_close_button)
+    {
+      gtk_widget_get_preferred_width (priv->close_button,
+                                      &child_min, &child_nat);
+      minimum += child_min;
+      natural += child_nat;
+    }
+
+  minimum += padding.left + padding.right + 2 * SHADOW_OFFSET_X;
+  natural += padding.left + padding.right + 2 * SHADOW_OFFSET_X;
+
+ if (minimum_size)
+    *minimum_size = minimum;
+
+  if (natural_size)
+    *natural_size = natural;
+}
+
+static void
+gd_notification_get_preferred_width_for_height (GtkWidget *widget,
+                                                 gint height,
+                                                 gint *minimum_width,
+                                                 gint *natural_width)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkBin *bin = GTK_BIN (widget);
+  gint child_min, child_nat, child_height;
+  GtkWidget *child;
+  GtkBorder padding;
+  gint minimum, natural;
+
+  get_padding_and_border (notification, &padding);
+
+  minimum = 0;
+  natural = 0;
+
+  child_height = height - SHADOW_OFFSET_Y - padding.top - padding.bottom;
+
+  child = gtk_bin_get_child (bin);
+  if (child && gtk_widget_get_visible (child))
+    {
+      gtk_widget_get_preferred_width_for_height (child, child_height,
+                                                 &child_min, &child_nat);
+      minimum += child_min;
+      natural += child_nat;
+    }
+
+  if (priv->show_close_button)
+    {
+      gtk_widget_get_preferred_width_for_height (priv->close_button, child_height,
+                                                 &child_min, &child_nat);
+      minimum += child_min;
+      natural += child_nat;
+    }
+
+  minimum += padding.left + padding.right + 2 * SHADOW_OFFSET_X;
+  natural += padding.left + padding.right + 2 * SHADOW_OFFSET_X;
+
+ if (minimum_width)
+    *minimum_width = minimum;
+
+  if (natural_width)
+    *natural_width = natural;
+}
+
+static void
+gd_notification_get_preferred_height_for_width (GtkWidget *widget,
+                                                 gint width,
+                                                 gint *minimum_height,
+                                                 gint *natural_height)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkBin *bin = GTK_BIN (widget);
+  gint child_min, child_nat, child_width, button_width = 0;
+  GtkWidget *child;
+  GtkBorder padding;
+  gint minimum = 0, natural = 0;
+
+  get_padding_and_border (notification, &padding);
+
+  if (priv->show_close_button)
+    {
+      gtk_widget_get_preferred_height (priv->close_button,
+                                       &minimum, &natural);
+      gtk_widget_get_preferred_width (priv->close_button,
+                                      NULL, &button_width);
+    }
+
+  child = gtk_bin_get_child (bin);
+  if (child && gtk_widget_get_visible (child))
+    {
+      child_width = width - button_width -
+        2 * SHADOW_OFFSET_X - padding.left - padding.right;
+
+      gtk_widget_get_preferred_height_for_width (child, child_width,
+                                                 &child_min, &child_nat);
+      minimum = MAX (minimum, child_min);
+      natural = MAX (natural, child_nat);
+    }
+
+  minimum += padding.top + padding.bottom + SHADOW_OFFSET_Y;
+  natural += padding.top + padding.bottom + SHADOW_OFFSET_Y;
+
+ if (minimum_height)
+    *minimum_height = minimum;
+
+  if (natural_height)
+    *natural_height = natural;
+}
+
+static void
+gd_notification_get_preferred_height (GtkWidget *widget, 
+                                      gint *minimum_height, 
+                                      gint *natural_height)
+{
+  gint width;
+
+  gd_notification_get_preferred_width (widget, &width, NULL);
+  gd_notification_get_preferred_height_for_width (widget, width,
+                                                  minimum_height, natural_height);
+}
+
+static void
+gd_notification_size_allocate (GtkWidget *widget,
+                                GtkAllocation *allocation)
+{
+  GdNotification *notification = GD_NOTIFICATION (widget);
+  GdNotificationPrivate *priv = notification->priv;
+  GtkBin *bin = GTK_BIN (widget);
+  GtkAllocation child_allocation;
+  GtkBorder padding;
+  GtkRequisition button_req;
+  GtkWidget *child;
+
+  gtk_widget_set_allocation (widget, allocation);
+
+  /* If somehow the notification changes while not hidden
+     and we're not animating, immediately follow the resize */
+  if (priv->animate_y > 0 &&
+      !priv->animate_timeout)
+    priv->animate_y = allocation->height;
+
+  get_padding_and_border (notification, &padding);
+
+  if (gtk_widget_get_realized (widget))
+    {
+      gdk_window_move_resize (gtk_widget_get_window (widget),
+                              allocation->x,
+                              allocation->y,
+                              allocation->width,
+                              allocation->height);
+      gdk_window_move_resize (priv->bin_window,
+                              0,
+                              -allocation->height + priv->animate_y,
+                              allocation->width,
+                              allocation->height);
+    }
+
+  child_allocation.x = SHADOW_OFFSET_X + padding.left;
+  child_allocation.y = padding.top;
+
+  if (priv->show_close_button)
+    gtk_widget_get_preferred_size (priv->close_button, &button_req, NULL);
+  else
+    button_req.width = button_req.height = 0;
+
+  child_allocation.height = MAX (1, allocation->height - SHADOW_OFFSET_Y - padding.top - padding.bottom);
+  child_allocation.width = MAX (1, (allocation->width - button_req.width -
+                                    2 * SHADOW_OFFSET_X - padding.left - padding.right));
+
+  child = gtk_bin_get_child (bin);
+  if (child && gtk_widget_get_visible (child))
+    gtk_widget_size_allocate (child, &child_allocation);
+
+  if (priv->show_close_button)
+    {
+      child_allocation.x += child_allocation.width;
+      child_allocation.width = button_req.width;
+      child_allocation.y += (child_allocation.height - button_req.height) / 2;
+      child_allocation.height = button_req.height;
+
+      gtk_widget_size_allocate (priv->close_button, &child_allocation);
+    }
+}
+
+static gboolean
+gd_notification_timeout_cb (gpointer user_data)
+{
+  GdNotification *notification = GD_NOTIFICATION (user_data);
+
+  gd_notification_dismiss (notification);
+
+  return FALSE;
+}
+
+void
+gd_notification_set_timeout (GdNotification *notification,
+                             gint            timeout_sec)
+{
+  GdNotificationPrivate *priv = notification->priv;
+
+  priv->timeout = timeout_sec;
+  g_object_notify (G_OBJECT (notification), "timeout");
+}
+
+void
+gd_notification_set_show_close_button (GdNotification *notification,
+                                       gboolean show_close_button)
+{
+  GdNotificationPrivate *priv = notification->priv;
+
+  priv->show_close_button = show_close_button;
+
+  gtk_widget_set_visible (priv->close_button, show_close_button);
+  gtk_widget_queue_resize (GTK_WIDGET (notification));
+}
+
+void
+gd_notification_dismiss (GdNotification *notification)
+{
+  GdNotificationPrivate *priv = notification->priv;
+
+  if (notification->priv->timeout_source_id)
+    {
+      g_source_remove (notification->priv->timeout_source_id);
+      notification->priv->timeout_source_id = 0;
+    }
+
+  priv->dismissed = TRUE;
+  priv->revealed = FALSE;
+  start_animation (notification);
+}
+
+static void
+gd_notification_close_button_clicked_cb (GtkWidget *widget, gpointer user_data)
+{
+  GdNotification *notification = GD_NOTIFICATION(user_data);
+
+  gd_notification_dismiss (notification);
+}
+
+GtkWidget *
+gd_notification_new (void)
+{
+  return g_object_new (GD_TYPE_NOTIFICATION, NULL);
+}