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eggstatusicon.c

/* eggstatusicon.c:
 *
 * Copyright (C) 2003 Sun Microsystems, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Authors:
 *    Mark McLoughlin <mark@skynet.ie>
 *  Nicolas Boichat <nicolas@boichat.ch> (add access to the underlying EggTrayIcon)
 */

extern "C" {

#include <string.h>
#include <libintl.h>

#include "eggstatusicon.h"

#include <gtk/gtk.h>
#include "eggmarshalers.h"

#ifndef EGG_COMPILATION
#ifndef _
#define _(x) dgettext (GETTEXT_PACKAGE, x)
#define N_(x) x
#endif
#else
#define _(x) x
#define N_(x) x
#endif

enum{
  PROP_0,
  PROP_PIXBUF,
  PROP_FILE,
  PROP_STOCK,
  PROP_PIXBUF_ANIMATION,
  PROP_STORAGE_TYPE,
  PROP_SIZE,
  PROP_BLINKING
};

enum {
  ACTIVATE_SIGNAL,
  POPUP_MENU_SIGNAL,
  SIZE_CHANGED_SIGNAL,
  LAST_SIGNAL
};

struct _EggStatusIconPrivate
{
  GtkWidget    *tray_icon;
  GtkWidget    *image;
  gint          size;

  GtkTooltips  *tooltips;

  GtkImageType  image_type;

  union
    {
      GdkPixbuf          *pixbuf;
      const gchar        *stock_id;
      GdkPixbufAnimation *animimation;
    } image_data;

  GdkPixbuf    *blank_icon;
  guint         blinking_timeout;

  guint         blinking : 1;
  guint         blink_off : 1;
};

static void egg_status_icon_class_init (EggStatusIconClass *klass);
static void egg_status_icon_init       (EggStatusIcon      *status_icon);

static void egg_status_icon_finalize     (GObject      *object);
static void egg_status_icon_set_property (GObject      *object,
                                guint         prop_id,
                                const GValue *value,
                                GParamSpec   *pspec);
static void egg_status_icon_get_property (GObject      *object,
                                guint         prop_id,
                                GValue       *value,
                                GParamSpec   *pspec);

static void     egg_status_icon_size_allocate    (EggStatusIcon  *status_icon,
                                      GtkAllocation  *allocation);
static gboolean egg_status_icon_button_release   (EggStatusIcon  *status_icon,
                                      GdkEventButton *event);
static void     egg_status_icon_disable_blinking (EggStatusIcon  *status_icon);
static void     egg_status_icon_reset_image_data (EggStatusIcon  *status_icon);
                                 

static GObjectClass *parent_class = NULL;
static guint status_icon_signals [LAST_SIGNAL] = { 0 };

GType
egg_status_icon_get_type (void)
{
  static GType status_icon_type = 0;
  
  if (!status_icon_type)
    {
      static const GTypeInfo status_icon_info =
      {
      sizeof (EggStatusIconClass),
      NULL,       /* base_init */
      NULL,       /* base_finalize */
      (GClassInitFunc) egg_status_icon_class_init,
      NULL,       /* class_finalize */
      NULL,       /* class_data */
      sizeof (EggStatusIcon),
      0,          /* n_preallocs */
      (GInstanceInitFunc) egg_status_icon_init,
      };
      
      status_icon_type = g_type_register_static (G_TYPE_OBJECT,
                                     "EggStatusIcon",
                                     &status_icon_info, (GTypeFlags)0);
    }
  
  return status_icon_type;
}

static void
egg_status_icon_class_init (EggStatusIconClass *klass)
{
  GObjectClass *gobject_class = (GObjectClass *) klass;

  parent_class = (GObjectClass*)g_type_class_peek_parent (klass);

  gobject_class->finalize     = egg_status_icon_finalize;
  gobject_class->set_property = egg_status_icon_set_property;
  gobject_class->get_property = egg_status_icon_get_property;

  g_object_class_install_property (gobject_class,
                           PROP_PIXBUF,
                           g_param_spec_object ("pixbuf",
                                          "Pixbuf",
                                          "A GdkPixbuf to display",
                                          GDK_TYPE_PIXBUF,
                                          (GParamFlags)G_PARAM_READWRITE));

  g_object_class_install_property (gobject_class,
                           PROP_FILE,
                           g_param_spec_string ("file",
                                          "Filename",
                                          "Filename to load and display",
                                          NULL,
                                          G_PARAM_WRITABLE));

  g_object_class_install_property (gobject_class,
                           PROP_STOCK,
                           g_param_spec_string ("stock",
                                          "Stock ID",
                                          "Stock ID for a stock image to display",
                                          NULL,
                                          (GParamFlags)G_PARAM_READWRITE));
  
  g_object_class_install_property (gobject_class,
                           PROP_PIXBUF_ANIMATION,
                           g_param_spec_object ("pixbuf-animation",
                                          "Animation",
                                          "GdkPixbufAnimation to display",
                                          GDK_TYPE_PIXBUF_ANIMATION,
                                          (GParamFlags)G_PARAM_READWRITE));
  
  g_object_class_install_property (gobject_class,
                           PROP_STORAGE_TYPE,
                           g_param_spec_enum ("image-type",
                                          "Image type",
                                          "The representation being used for image data",
                                          GTK_TYPE_IMAGE_TYPE,
                                          GTK_IMAGE_EMPTY,
                                          G_PARAM_READABLE));

  g_object_class_install_property (gobject_class,
                           PROP_SIZE,
                           g_param_spec_int ("size",
                                         "Size",
                                         "The size of the icon",
                                         G_MININT,
                                         G_MAXINT,
                                         0,
                                         G_PARAM_READABLE));

  g_object_class_install_property (gobject_class,
                           PROP_BLINKING,
                           g_param_spec_boolean ("blinking",
                                           "Blinking",
                                           "Whether or not the status icon is blinking",
                                           FALSE,
                                           (GParamFlags)G_PARAM_READWRITE));

  status_icon_signals [ACTIVATE_SIGNAL] =
    g_signal_new ("activate",
              G_TYPE_FROM_CLASS (gobject_class),
              (GSignalFlags)(G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION),
              G_STRUCT_OFFSET (EggStatusIconClass, activate),
              NULL,
              NULL,
              g_cclosure_marshal_VOID__VOID,
              G_TYPE_NONE,
              0);

  status_icon_signals [POPUP_MENU_SIGNAL] =
    g_signal_new ("popup-menu",
              G_TYPE_FROM_CLASS (gobject_class),
              (GSignalFlags)(G_SIGNAL_RUN_FIRST | G_SIGNAL_ACTION),
              G_STRUCT_OFFSET (EggStatusIconClass, popup_menu),
              NULL,
              NULL,
              _egg_marshal_VOID__UINT_UINT,
              G_TYPE_NONE,
              2,
              G_TYPE_UINT,
              G_TYPE_UINT);

  status_icon_signals [SIZE_CHANGED_SIGNAL] =
    g_signal_new ("size-changed",
              G_TYPE_FROM_CLASS (gobject_class),
              G_SIGNAL_RUN_FIRST,
              G_STRUCT_OFFSET (EggStatusIconClass, size_changed),
              NULL,
              NULL,
              g_cclosure_marshal_VOID__INT,
              G_TYPE_NONE,
              1,
              G_TYPE_INT);
}

static void
egg_status_icon_init (EggStatusIcon *status_icon)
{
  status_icon->priv = g_new0 (EggStatusIconPrivate, 1);

  status_icon->priv->image_type = GTK_IMAGE_EMPTY;
  status_icon->priv->size       = G_MAXINT;

  status_icon->priv->tray_icon = GTK_WIDGET (egg_tray_icon_new (NULL));

  gtk_widget_add_events (GTK_WIDGET (status_icon->priv->tray_icon),
                   GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

  g_signal_connect_swapped (status_icon->priv->tray_icon, "button-release-event",
                      G_CALLBACK (egg_status_icon_button_release), status_icon);

  status_icon->priv->image = gtk_image_new ();
  gtk_container_add (GTK_CONTAINER (status_icon->priv->tray_icon),
                 status_icon->priv->image);

  g_signal_connect_swapped (status_icon->priv->image, "size-allocate",
                      G_CALLBACK (egg_status_icon_size_allocate), status_icon);

  gtk_widget_show (status_icon->priv->image);
  gtk_widget_show (status_icon->priv->tray_icon);

  status_icon->priv->tooltips = gtk_tooltips_new ();
  g_object_ref (status_icon->priv->tooltips);
  gtk_object_sink (GTK_OBJECT (status_icon->priv->tooltips));
}

static void
egg_status_icon_finalize (GObject *object)
{
  EggStatusIcon *status_icon = EGG_STATUS_ICON (object);

  egg_status_icon_disable_blinking (status_icon);

  egg_status_icon_reset_image_data (status_icon);

  if (status_icon->priv->blank_icon)
    g_object_unref (status_icon->priv->blank_icon);
  status_icon->priv->blank_icon = NULL;

  if (status_icon->priv->tooltips)
    g_object_unref (status_icon->priv->tooltips);
  status_icon->priv->tooltips = NULL;

  gtk_widget_destroy (status_icon->priv->tray_icon);

  g_free (status_icon->priv);

  G_OBJECT_CLASS (parent_class)->finalize (object);
}

static void
egg_status_icon_set_property (GObject      *object,
                        guint         prop_id,
                        const GValue *value,
                        GParamSpec   *pspec)
{
  EggStatusIcon *status_icon = EGG_STATUS_ICON (object);

  switch (prop_id)
    {
    case PROP_PIXBUF:
      egg_status_icon_set_from_pixbuf (status_icon, (GdkPixbuf*)g_value_get_object (value));
      break;
    case PROP_FILE:
      egg_status_icon_set_from_file (status_icon, g_value_get_string (value));
      break;
    case PROP_STOCK:
      egg_status_icon_set_from_stock (status_icon, g_value_get_string (value));
      break;
    case PROP_PIXBUF_ANIMATION:
      egg_status_icon_set_from_animation (status_icon, (GdkPixbufAnimation*)g_value_get_object (value));
      break;
    case PROP_BLINKING:
      egg_status_icon_set_is_blinking (status_icon, g_value_get_boolean (value));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

static void
egg_status_icon_get_property (GObject    *object,
                        guint       prop_id,
                        GValue     *value,
                        GParamSpec *pspec)
{
  EggStatusIcon *status_icon = EGG_STATUS_ICON (object);

  switch (prop_id)
    {
    case PROP_PIXBUF:
      g_value_set_object (value, egg_status_icon_get_pixbuf (status_icon));
      break;
    case PROP_STOCK:
      g_value_set_string (value, egg_status_icon_get_stock (status_icon));
      break;
    case PROP_PIXBUF_ANIMATION:
      g_value_set_object (value, egg_status_icon_get_animation (status_icon));
      break;
    case PROP_STORAGE_TYPE:
      g_value_set_enum (value, egg_status_icon_get_image_type (status_icon));
      break;
    case PROP_SIZE:
      g_value_set_int (value, status_icon->priv->size);
      break;
    case PROP_BLINKING:
      g_value_set_boolean (value, status_icon->priv->blinking);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

EggStatusIcon *
egg_status_icon_new (void)
{
  return (EggStatusIcon*)g_object_new (EGG_TYPE_STATUS_ICON, NULL);
}

EggStatusIcon *
egg_status_icon_new_from_pixbuf (GdkPixbuf *pixbuf)
{
  return (EggStatusIcon*)g_object_new (EGG_TYPE_STATUS_ICON,
                   "pixbuf", pixbuf,
                   NULL);
}

EggStatusIcon *
egg_status_icon_new_from_file (const gchar *filename)
{
  return (EggStatusIcon*)g_object_new (EGG_TYPE_STATUS_ICON,
                   "file", filename,
                   NULL);
}

EggStatusIcon *
egg_status_icon_new_from_stock (const gchar *stock_id)
{
  return (EggStatusIcon*)g_object_new (EGG_TYPE_STATUS_ICON,
                   "stock", stock_id,
                   NULL);
}

EggStatusIcon *
egg_status_icon_new_from_animation (GdkPixbufAnimation *animation)
{
  return (EggStatusIcon*)g_object_new (EGG_TYPE_STATUS_ICON,
                   "pixbuf_animation", animation,
                   NULL);
}

static void
emit_activate_signal (EggStatusIcon *status_icon)
{
  g_signal_emit (status_icon,
             status_icon_signals [ACTIVATE_SIGNAL], 0);
}

static void
emit_popup_menu_signal (EggStatusIcon *status_icon,
                  guint          button,
                  guint32        activate_time)
{
  g_signal_emit (status_icon,
             status_icon_signals [POPUP_MENU_SIGNAL], 0,
             button,
             activate_time);
}

static gboolean
emit_size_changed_signal (EggStatusIcon *status_icon,
                    gint           size)
{
  gboolean handled = FALSE;
  
  g_signal_emit (status_icon,
             status_icon_signals [SIZE_CHANGED_SIGNAL], 0,
             size,
             &handled);

  return handled;
}

static GdkPixbuf *
egg_status_icon_blank_icon (EggStatusIcon *status_icon)
{
  if (status_icon->priv->blank_icon)
    {
      gint width, height;

      width  = gdk_pixbuf_get_width (status_icon->priv->blank_icon);
      height = gdk_pixbuf_get_width (status_icon->priv->blank_icon);

      if (width  == status_icon->priv->size &&
          height == status_icon->priv->size)
      {
        return status_icon->priv->blank_icon;
      }
      else
      {
        g_object_unref (status_icon->priv->blank_icon);
        status_icon->priv->blank_icon = NULL;
      }
    }

  status_icon->priv->blank_icon = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
                                      status_icon->priv->size,
                                      status_icon->priv->size);
  if (status_icon->priv->blank_icon)
    gdk_pixbuf_fill (status_icon->priv->blank_icon, 0);

  return status_icon->priv->blank_icon;
}

static void
egg_status_icon_update_image (EggStatusIcon *status_icon)
{
  if (status_icon->priv->blink_off)
    {
      gtk_image_set_from_pixbuf (GTK_IMAGE (status_icon->priv->image),
                         egg_status_icon_blank_icon (status_icon));
      return;
    }

  switch (status_icon->priv->image_type)
    {
    case GTK_IMAGE_PIXBUF:
      {
      GdkPixbuf *pixbuf;

      pixbuf = status_icon->priv->image_data.pixbuf;

      if (pixbuf)
        {
          GdkPixbuf *scaled;
          gint size;
          gint width;
          gint height;

          size = status_icon->priv->size;

          width  = gdk_pixbuf_get_width  (pixbuf);
          height = gdk_pixbuf_get_height (pixbuf);

          if (width > size || height > size)
            {
            scaled = gdk_pixbuf_scale_simple (pixbuf,
                                      MIN (size, width),
                                      MIN (size, height),
                                      GDK_INTERP_BILINEAR);
            }
          else
            {
            scaled = (GdkPixbuf*)g_object_ref (pixbuf);
            }

          gtk_image_set_from_pixbuf (GTK_IMAGE (status_icon->priv->image), scaled);

          g_object_unref (scaled);
        }
      else
        {
          gtk_image_set_from_pixbuf (GTK_IMAGE (status_icon->priv->image), NULL);
        }
      }
      break;
    case GTK_IMAGE_STOCK:
    case GTK_IMAGE_ANIMATION:
    case GTK_IMAGE_EMPTY:
      gtk_image_set_from_pixbuf (GTK_IMAGE (status_icon->priv->image), NULL);
      break;
    default:
      g_assert_not_reached ();
      break;
    }
}

static void
egg_status_icon_size_allocate (EggStatusIcon *status_icon,
                         GtkAllocation *allocation)
{
  GtkOrientation orientation;
  gint size;

  orientation = egg_tray_icon_get_orientation (EGG_TRAY_ICON (status_icon->priv->tray_icon));

  if (orientation == GTK_ORIENTATION_HORIZONTAL)
    size = allocation->height;
  else
    size = allocation->width;

  if (status_icon->priv->size != size)
    {
      status_icon->priv->size = size;

      g_object_notify (G_OBJECT (status_icon), "size");

      if (!emit_size_changed_signal (status_icon, size))
      {
        egg_status_icon_update_image (status_icon);
      }
    }
}

static gboolean
egg_status_icon_button_release (EggStatusIcon  *status_icon,
                        GdkEventButton *event)
{
  if (event->button == 1)
    {
      emit_activate_signal (status_icon);
      return TRUE;
    }
  if (event->button == 3)
    {
      emit_popup_menu_signal (status_icon, event->button, event->time);
      return TRUE;
    }

  return FALSE;
}

static void
egg_status_icon_reset_image_data (EggStatusIcon *status_icon)
{
  switch (status_icon->priv->image_type)
  {
    case GTK_IMAGE_PIXBUF:
      status_icon->priv->image_type = GTK_IMAGE_EMPTY;

      if (status_icon->priv->image_data.pixbuf)
      g_object_unref (status_icon->priv->image_data.pixbuf);
      status_icon->priv->image_data.pixbuf = NULL;

      g_object_notify (G_OBJECT (status_icon), "image-type");
      g_object_notify (G_OBJECT (status_icon), "pixbuf");
      break;
    case GTK_IMAGE_STOCK:
    case GTK_IMAGE_ANIMATION:
    case GTK_IMAGE_EMPTY:
      break;
    default:
      g_assert_not_reached ();
      break;
  }
}

void
egg_status_icon_set_from_pixbuf (EggStatusIcon *status_icon,
                         GdkPixbuf     *pixbuf)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));
  g_return_if_fail (pixbuf == NULL || GDK_IS_PIXBUF (pixbuf));

  if (pixbuf)
    g_object_ref (pixbuf);

  g_object_freeze_notify (G_OBJECT (status_icon));

  egg_status_icon_reset_image_data (status_icon);

  status_icon->priv->image_type = GTK_IMAGE_PIXBUF;
  status_icon->priv->image_data.pixbuf = pixbuf;

  g_object_notify (G_OBJECT (status_icon), "image-type");
  g_object_notify (G_OBJECT (status_icon), "pixbuf");

  g_object_thaw_notify (G_OBJECT (status_icon));

  egg_status_icon_update_image (status_icon);
}

void
egg_status_icon_set_from_file (EggStatusIcon *status_icon,
                         const gchar   *filename)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));
}

void
egg_status_icon_set_from_stock (EggStatusIcon *status_icon,
                        const gchar   *stock_id)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));
}

void
egg_status_icon_set_from_animation (EggStatusIcon      *status_icon,
                            GdkPixbufAnimation *animation)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));
  g_return_if_fail (animation == NULL || GDK_IS_PIXBUF_ANIMATION (animation));
}
                                                                                                             
GtkImageType
egg_status_icon_get_image_type (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), GTK_IMAGE_EMPTY);

  return status_icon->priv->image_type;
}
                                                                                                             
GdkPixbuf *
egg_status_icon_get_pixbuf (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), NULL);
  g_return_val_if_fail (status_icon->priv->image_type == GTK_IMAGE_PIXBUF ||
                  status_icon->priv->image_type == GTK_IMAGE_EMPTY, NULL);
                                                                                                             
  if (status_icon->priv->image_type == GTK_IMAGE_EMPTY)
    status_icon->priv->image_data.pixbuf = NULL;
                                                                                                             
  return status_icon->priv->image_data.pixbuf;
}

G_CONST_RETURN gchar *
egg_status_icon_get_stock (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), NULL);

  return NULL;
}

GdkPixbufAnimation *
egg_status_icon_get_animation (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), NULL);

  return NULL;
}
                                                                                                             
gint
egg_status_icon_get_size (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), -1);

  return status_icon->priv->size;
}
                                                                                                             
void
egg_status_icon_set_tooltip (EggStatusIcon *status_icon,
                       const gchar   *tooltip_text,
                       const gchar   *tooltip_private)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));

  gtk_tooltips_set_tip (status_icon->priv->tooltips,
                  status_icon->priv->tray_icon,
                  tooltip_text,
                  tooltip_private);
}

void
egg_status_icon_set_balloon_text (EggStatusIcon *status_icon,
                          const gchar   *text)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));
}

G_CONST_RETURN gchar *
egg_status_icon_get_balloon_text (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), NULL);

  return NULL;
}

static gboolean
egg_status_icon_blinker (EggStatusIcon *status_icon)
{
  status_icon->priv->blink_off = !status_icon->priv->blink_off;

  egg_status_icon_update_image (status_icon);

  return TRUE;
}

static void
egg_status_icon_enable_blinking (EggStatusIcon *status_icon)
{
  if (!status_icon->priv->blinking_timeout)
    {
      egg_status_icon_blinker (status_icon);

      status_icon->priv->blinking_timeout =
      g_timeout_add (500, (GSourceFunc) egg_status_icon_blinker, status_icon);
    }
}

static void
egg_status_icon_disable_blinking (EggStatusIcon *status_icon)
{
  if (status_icon->priv->blinking_timeout)
    {
      g_source_remove (status_icon->priv->blinking_timeout);
      status_icon->priv->blinking_timeout = 0;
      status_icon->priv->blink_off = FALSE;

      egg_status_icon_update_image (status_icon);
    }
}

void
egg_status_icon_set_is_blinking (EggStatusIcon *status_icon,
                         guint       is_blinking)
{
  g_return_if_fail (EGG_IS_STATUS_ICON (status_icon));

  is_blinking = is_blinking != FALSE;

  if (status_icon->priv->blinking != is_blinking)
    {
      status_icon->priv->blinking = is_blinking;

      if (is_blinking)
      egg_status_icon_enable_blinking (status_icon);
      else
      egg_status_icon_disable_blinking (status_icon);

      g_object_notify (G_OBJECT (status_icon), "blinking");
    }
}

gboolean
egg_status_icon_get_is_blinking (EggStatusIcon *status_icon)
{
  g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), FALSE);

  return status_icon->priv->blinking;
}

EggTrayIcon*
egg_status_icon_get_tray_icon (EggStatusIcon      *status_icon)
{
   g_return_val_if_fail (EGG_IS_STATUS_ICON (status_icon), NULL);
   
   return EGG_TRAY_ICON(status_icon->priv->tray_icon);
}

} //extern "C"

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