libempathy-gtk/empathy-avatar-image.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2006-2007 Imendio AB
   4  * Copyright (C) 2007 Collabora Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * Authors: Xavier Claessens <xclaesse@gmail.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <glib/gi18n.h>
  27 #include <gdk/gdkkeysyms.h>
  28 #include <gdk/gdk.h>
  29 #include <gtk/gtk.h>
  30 #include <gdk/gdkx.h>
  31
  32 #include <libempathy/empathy-debug.h>
  33
  34 #include "empathy-avatar-image.h"
  35 #include "empathy-ui-utils.h"
  36
  37 #define DEBUG_DOMAIN "AvatarImage"
  38
  39 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_AVATAR_IMAGE, EmpathyAvatarImagePriv))
  40
  41 #define MAX_SMALL 64
  42 #define MAX_LARGE 400
  43
  44 typedef struct {
  45         GtkWidget   *image;
  46         GtkWidget   *popup;
  47         GdkPixbuf   *pixbuf;
  48 } EmpathyAvatarImagePriv;
  49
  50 static void     avatar_image_finalize                (GObject           *object);
  51 static void     avatar_image_add_filter              (EmpathyAvatarImage *avatar_image);
  52 static void     avatar_image_remove_filter           (EmpathyAvatarImage *avatar_image);
  53 static gboolean avatar_image_button_press_event      (GtkWidget         *widget,
  54                                                       GdkEventButton    *event);
  55 static gboolean avatar_image_button_release_event    (GtkWidget         *widget,
  56                                                       GdkEventButton    *event);
  57
  58 G_DEFINE_TYPE (EmpathyAvatarImage, empathy_avatar_image, GTK_TYPE_EVENT_BOX);
  59
  60 static void
  61 empathy_avatar_image_class_init (EmpathyAvatarImageClass *klass)
  62 {
  63         GObjectClass   *object_class;
  64         GtkWidgetClass *widget_class;
  65
  66         object_class = G_OBJECT_CLASS (klass);
  67         widget_class = GTK_WIDGET_CLASS (klass);
  68
  69         object_class->finalize = avatar_image_finalize;
  70
  71         widget_class->button_press_event   = avatar_image_button_press_event;
  72         widget_class->button_release_event = avatar_image_button_release_event;
  73
  74         g_type_class_add_private (object_class, sizeof (EmpathyAvatarImagePriv));
  75 }
  76
  77 static void
  78 empathy_avatar_image_init (EmpathyAvatarImage *avatar_image)
  79 {
  80         EmpathyAvatarImagePriv *priv;
  81
  82         priv = GET_PRIV (avatar_image);
  83
  84         priv->image = gtk_image_new ();
  85         gtk_container_add (GTK_CONTAINER (avatar_image), priv->image);
  86         empathy_avatar_image_set (avatar_image, NULL);
  87         gtk_widget_show (priv->image);
  88
  89         avatar_image_add_filter (avatar_image);
  90 }
  91
  92 static void
  93 avatar_image_finalize (GObject *object)
  94 {
  95         EmpathyAvatarImagePriv *priv;
  96
  97         priv = GET_PRIV (object);
  98
  99         avatar_image_remove_filter (EMPATHY_AVATAR_IMAGE (object));
 100
 101         if (priv->popup) {
 102                 gtk_widget_destroy (priv->popup);
 103         }
 104
 105         if (priv->pixbuf) {
 106                 g_object_unref (priv->pixbuf);
 107         }
 108
 109         G_OBJECT_CLASS (empathy_avatar_image_parent_class)->finalize (object);
 110 }
 111
 112 static GdkFilterReturn
 113 avatar_image_filter_func (GdkXEvent  *gdkxevent,
 114                           GdkEvent   *event,
 115                           gpointer    data)
 116 {
 117         XEvent                *xevent = gdkxevent;
 118         Atom                   atom;
 119         EmpathyAvatarImagePriv *priv;
 120
 121         priv = GET_PRIV (data);
 122
 123         switch (xevent->type) {
 124         case PropertyNotify:
 125                 atom = gdk_x11_get_xatom_by_name ("_NET_CURRENT_DESKTOP");
 126                 if (xevent->xproperty.atom == atom) {
 127                         if (priv->popup) {
 128                                 gtk_widget_destroy (priv->popup);
 129                                 priv->popup = NULL;
 130                         }
 131                 }
 132                 break;
 133         }
 134
 135         return GDK_FILTER_CONTINUE;
 136 }
 137
 138 static void
 139 avatar_image_add_filter (EmpathyAvatarImage *avatar_image)
 140 {
 141         Window     window;
 142         GdkWindow *gdkwindow;
 143         gint       mask;
 144
 145         mask = PropertyChangeMask;
 146
 147         window = GDK_ROOT_WINDOW ();
 148         gdkwindow = gdk_xid_table_lookup (window);
 149
 150         gdk_error_trap_push ();
 151         if (gdkwindow) {
 152                 XWindowAttributes attrs;
 153                 XGetWindowAttributes (gdk_display, window, &attrs);
 154                 mask |= attrs.your_event_mask;
 155         }
 156
 157         XSelectInput (gdk_display, window, mask);
 158
 159         gdk_error_trap_pop ();
 160
 161         gdk_window_add_filter (NULL, avatar_image_filter_func, avatar_image);
 162 }
 163
 164 static void
 165 avatar_image_remove_filter (EmpathyAvatarImage *avatar_image)
 166 {
 167         gdk_window_remove_filter (NULL, avatar_image_filter_func, avatar_image);
 168 }
 169
 170 static gboolean
 171 avatar_image_button_press_event (GtkWidget *widget, GdkEventButton *event)
 172 {
 173         EmpathyAvatarImagePriv *priv;
 174         GtkWidget             *popup;
 175         GtkWidget             *frame;
 176         GtkWidget             *image;
 177         gint                   x, y;
 178         gint                   popup_width, popup_height;
 179         gint                   width, height;
 180         GdkPixbuf             *pixbuf;
 181
 182         priv = GET_PRIV (widget);
 183
 184         if (priv->popup) {
 185                 gtk_widget_destroy (priv->popup);
 186                 priv->popup = NULL;
 187         }
 188
 189         if (event->button != 1 || event->type != GDK_BUTTON_PRESS || !priv->pixbuf) {
 190                 return FALSE;
 191         }
 192
 193         popup_width = gdk_pixbuf_get_width (priv->pixbuf);
 194         popup_height = gdk_pixbuf_get_height (priv->pixbuf);
 195
 196         width = priv->image->allocation.width;
 197         height = priv->image->allocation.height;
 198
 199         /* Don't show a popup if the popup is smaller then the currently avatar
 200          * image.
 201          */
 202         if (popup_height <= height && popup_width <= width) {
 203                 return TRUE;
 204         }
 205
 206         pixbuf = empathy_pixbuf_scale_down_if_necessary (priv->pixbuf, MAX_LARGE);
 207         popup_width = gdk_pixbuf_get_width (pixbuf);
 208         popup_height = gdk_pixbuf_get_height (pixbuf);
 209
 210         popup = gtk_window_new (GTK_WINDOW_POPUP);
 211
 212         frame = gtk_frame_new (NULL);
 213         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
 214
 215         gtk_container_add (GTK_CONTAINER (popup), frame);
 216
 217         image = gtk_image_new ();
 218         gtk_container_add (GTK_CONTAINER (frame), image);
 219
 220         gtk_image_set_from_pixbuf (GTK_IMAGE (image), pixbuf);
 221         g_object_unref (pixbuf);
 222
 223         gdk_window_get_origin (priv->image->window, &x, &y);
 224
 225         x = x - (popup_width - width) / 2;
 226         y = y - (popup_height - height) / 2;
 227
 228         gtk_window_move (GTK_WINDOW (popup), x, y);
 229
 230         priv->popup = popup;
 231
 232         gtk_widget_show_all (popup);
 233
 234         return TRUE;
 235 }
 236
 237 static gboolean
 238 avatar_image_button_release_event (GtkWidget *widget, GdkEventButton *event)
 239 {
 240         EmpathyAvatarImagePriv *priv;
 241
 242         priv = GET_PRIV (widget);
 243
 244         if (event->button != 1 || event->type != GDK_BUTTON_RELEASE) {
 245                 return FALSE;
 246         }
 247
 248         if (!priv->popup) {
 249                 return TRUE;
 250         }
 251
 252         gtk_widget_destroy (priv->popup);
 253         priv->popup = NULL;
 254
 255         return TRUE;
 256 }
 257
 258 GtkWidget *
 259 empathy_avatar_image_new (void)
 260 {
 261         EmpathyAvatarImage *avatar_image;
 262
 263         avatar_image = g_object_new (EMPATHY_TYPE_AVATAR_IMAGE, NULL);
 264
 265         return GTK_WIDGET (avatar_image);
 266 }
 267
 268 void
 269 empathy_avatar_image_set (EmpathyAvatarImage *avatar_image,
 270                           EmpathyAvatar      *avatar)
 271 {
 272         EmpathyAvatarImagePriv *priv = GET_PRIV (avatar_image);
 273         GdkPixbuf              *scaled_pixbuf;
 274
 275         g_return_if_fail (EMPATHY_IS_AVATAR_IMAGE (avatar_image));
 276
 277         if (priv->pixbuf) {
 278                 g_object_unref (priv->pixbuf);
 279                 priv->pixbuf = NULL;
 280         }
 281
 282         if (avatar) {
 283                 priv->pixbuf = empathy_pixbuf_from_data (avatar->data, avatar->len);
 284         }
 285
 286         if (!priv->pixbuf) {
 287                 gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
 288                                               "stock_person",
 289                                               GTK_ICON_SIZE_DIALOG);
 290                 return;
 291         }
 292
 293         scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (priv->pixbuf, MAX_SMALL);
 294         gtk_image_set_from_pixbuf (GTK_IMAGE (priv->image), scaled_pixbuf);
 295
 296         if (scaled_pixbuf != priv->pixbuf) {
 297                 gtk_widget_set_tooltip_text (GTK_WIDGET (avatar_image),
 298                                              _("Click to enlarge"));
 299         } else {
 300                 gtk_widget_set_tooltip_text (GTK_WIDGET (avatar_image),
 301                                              NULL);
 302         }
 303
 304         g_object_unref (scaled_pixbuf);
 305 }
 306