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Tags: upstream-2.2.0~0beta4
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MeMenu/src/about-me-menu-item.c
 
1
/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 2; tab-width: 2 -*- */
 
2
/*
 
3
 * Copyright 2010 Canonical, Ltd.
 
4
 *
 
5
 * This program is free software: you can redistribute it and/or modify it
 
6
 * under the terms of either or both of the following licenses:
 
7
 *
 
8
 * 1) the GNU Lesser General Public License version 3, as published by the
 
9
 * Free Software Foundation; and/or
 
10
 * 2) the GNU Lesser General Public License version 2.1, as published by
 
11
 * the Free Software Foundation.
 
12
 *
 
13
 * This program is distributed in the hope that it will be useful, but
 
14
 * WITHOUT ANY WARRANTY; without even the implied warranties of
 
15
 * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
 
16
 * PURPOSE.  See the applicable version of the GNU Lesser General Public
 
17
 * License for more details.
 
18
 *
 
19
 * You should have received a copy of both the GNU Lesser General Public
 
20
 * License version 3 and version 2.1 along with this program.  If not, see
 
21
 * <http://www.gnu.org/licenses/>
 
22
 *
 
23
 * Authors:
 
24
 *    David Barth <david.barth@canonical.com>
 
25
 *    Cody Russell <crussell@canonical.com>
 
26
 */
 
27
 
 
28
#include <sys/types.h>
 
29
#include <sys/stat.h>
 
30
#include <unistd.h>
 
31
 
 
32
#include <glib/gstdio.h>
 
33
 
 
34
#include <gtk/gtk.h>
 
35
#include "about-me-menu-item.h"
 
36
 
 
37
static GObject* about_me_menu_item_constructor            (GType                  type,
 
38
                                                           guint                  n_construct_properties,
 
39
                                                           GObjectConstructParam *construct_params);
 
40
static void     about_me_menu_item_set_property           (GObject               *object,
 
41
                                                           guint                  prop_id,
 
42
                                                           const GValue          *value,
 
43
                                                           GParamSpec            *pspec);
 
44
static void     about_me_menu_item_get_property           (GObject               *object,
 
45
                                                           guint                  prop_id,
 
46
                                                           GValue                *value,
 
47
                                                           GParamSpec            *pspec);
 
48
 
 
49
struct _AboutMeMenuItemPrivate {
 
50
  GtkWidget     *label;
 
51
  GtkWidget     *image;
 
52
  GtkWidget     *hbox;
 
53
  gchar         *realname;
 
54
};
 
55
 
 
56
enum {
 
57
  PROP_0,
 
58
  PROP_REALNAME
 
59
};
 
60
 
 
61
G_DEFINE_TYPE (AboutMeMenuItem, about_me_menu_item, GTK_TYPE_MENU_ITEM)
 
62
 
 
63
#define GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), ABOUT_ME_TYPE_MENU_ITEM, AboutMeMenuItemPrivate))
 
64
 
 
65
static void
 
66
about_me_menu_item_class_init (AboutMeMenuItemClass *item_class)
 
67
{
 
68
  GObjectClass      *gobject_class = G_OBJECT_CLASS (item_class);
 
69
 
 
70
  gobject_class->constructor  = about_me_menu_item_constructor;
 
71
  gobject_class->set_property = about_me_menu_item_set_property;
 
72
  gobject_class->get_property = about_me_menu_item_get_property;
 
73
 
 
74
  g_object_class_install_property (gobject_class,
 
75
                                   PROP_REALNAME,
 
76
                                   g_param_spec_string ("realname",
 
77
                                                        "Realname",
 
78
                                                        "The \"Realname\" for the user",
 
79
                                                        NULL,
 
80
                                                        G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 
81
 
 
82
  g_type_class_add_private (gobject_class, sizeof (AboutMeMenuItemPrivate));
 
83
}
 
84
 
 
85
static void
 
86
about_me_menu_item_init (AboutMeMenuItem *self)
 
87
{
 
88
  AboutMeMenuItemPrivate *priv = GET_PRIVATE (self);
 
89
 
 
90
  priv->label = NULL;
 
91
  priv->image = NULL;
 
92
  priv->realname = NULL;
 
93
}
 
94
 
 
95
static void
 
96
about_me_menu_item_set_property (GObject         *object,
 
97
                                 guint            prop_id,
 
98
                                 const GValue    *value,
 
99
                                 GParamSpec      *pspec)
 
100
{
 
101
        AboutMeMenuItem *menu_item = ABOUT_ME_MENU_ITEM (object);
 
102
        AboutMeMenuItemPrivate *priv = GET_PRIVATE (menu_item);
 
103
 
 
104
        switch (prop_id)
 
105
  {
 
106
        case PROP_REALNAME:
 
107
                g_assert (priv->realname == NULL);
 
108
    priv->realname = g_strdup (g_value_get_string (value));
 
109
                break;
 
110
 
 
111
  default:
 
112
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 
113
    break;
 
114
  }
 
115
}
 
116
 
 
117
static void
 
118
about_me_menu_item_get_property (GObject         *object,
 
119
                                 guint            prop_id,
 
120
                                 GValue          *value,
 
121
                                 GParamSpec      *pspec)
 
122
{
 
123
        AboutMeMenuItem *menu_item = ABOUT_ME_MENU_ITEM (object);
 
124
        AboutMeMenuItemPrivate *priv = GET_PRIVATE (menu_item);
 
125
 
 
126
  switch (prop_id)
 
127
  {
 
128
        case PROP_REALNAME:
 
129
                g_value_set_string (value, priv->realname);
 
130
                break;
 
131
 
 
132
  default:
 
133
    G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 
134
    break;
 
135
  }
 
136
}
 
137
 
 
138
#define DEFAULT_PIXELS_PER_EM        10.0f
 
139
 
 
140
static gdouble
 
141
get_pixels_per_em (GtkWidget *widget)
 
142
{
 
143
        g_return_val_if_fail (GTK_IS_WIDGET (widget), DEFAULT_PIXELS_PER_EM);
 
144
 
 
145
        /* Note: taken from indicator-session */
 
146
        GtkStyle * style = gtk_widget_get_style(widget);
 
147
 
 
148
        PangoLayout * layout = pango_layout_new(gtk_widget_get_pango_context(widget));
 
149
        pango_layout_set_text(layout, "M", -1);
 
150
        pango_layout_set_font_description(layout, style->font_desc);
 
151
 
 
152
        gint width;
 
153
        pango_layout_get_pixel_size(layout, &width, NULL);
 
154
 
 
155
        gint point = pango_font_description_get_size(style->font_desc);
 
156
        gdouble dpi = gdk_screen_get_resolution(gdk_screen_get_default());
 
157
 
 
158
        return ((point * dpi) / 72.0f) / PANGO_SCALE;
 
159
}
 
160
 
 
161
 
 
162
/* from n-osd */
 
163
static GdkPixbuf*
 
164
load_icon (const gchar* filename,
 
165
           gint         icon_size)
 
166
{
 
167
        GdkPixbuf*    buffer = NULL;
 
168
        GdkPixbuf*    pixbuf = NULL;
 
169
        GtkIconTheme* theme  = NULL;
 
170
        GError*       error  = NULL;
 
171
 
 
172
        /* sanity check */
 
173
        g_return_val_if_fail (filename, NULL);
 
174
 
 
175
        theme = gtk_icon_theme_get_default ();
 
176
        buffer = gtk_icon_theme_load_icon (theme,
 
177
                                     filename,
 
178
                                     icon_size,
 
179
                                     GTK_ICON_LOOKUP_FORCE_SVG |
 
180
                                     GTK_ICON_LOOKUP_GENERIC_FALLBACK |
 
181
                                     GTK_ICON_LOOKUP_FORCE_SIZE,
 
182
                                     &error);
 
183
        if (error)
 
184
        {
 
185
                g_print ("loading icon '%s' caused error: '%s'",
 
186
             filename,
 
187
             error->message);
 
188
                g_error_free (error);
 
189
                error = NULL;
 
190
                pixbuf = NULL;
 
191
        }
 
192
        else
 
193
        {
 
194
                /* copy and unref buffer so on an icon-theme change old
 
195
                ** icons are not kept in memory due to dangling
 
196
                ** references, this also makes sure we do not need to
 
197
                ** connect to GtkWidget::style-set signal for the
 
198
                ** GdkPixbuf we get from gtk_icon_theme_load_icon() */
 
199
                pixbuf = gdk_pixbuf_copy (buffer);
 
200
                g_object_unref (buffer);
 
201
        }
 
202
 
 
203
        return pixbuf;
 
204
}
 
205
 
 
206
gboolean
 
207
about_me_menu_item_load_avatar (AboutMeMenuItem *self, const gchar *file)
 
208
{
 
209
  g_return_val_if_fail (ABOUT_IS_ME_MENU_ITEM (self), FALSE);
 
210
 
 
211
  AboutMeMenuItemPrivate *priv = GET_PRIVATE (self);
 
212
 
 
213
  g_debug ("loading avatar from file %s", file);
 
214
 
 
215
  struct stat buf;
 
216
  if (! (g_stat (file, &buf) == 0 && buf.st_size > 0)) {
 
217
    g_warning ("%s: not found or empty", file);
 
218
    return FALSE;
 
219
  }
 
220
 
 
221
  if (buf.st_size > 1024*1024) {
 
222
    g_warning ("avatar file too large (%lld)", (long long)buf.st_size);
 
223
    return FALSE;
 
224
  }
 
225
 
 
226
  GError *error = NULL;
 
227
  int size = get_pixels_per_em (priv->image) * 3;
 
228
 
 
229
  GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_scale (file, -1, size, TRUE,
 
230
                                                         &error);
 
231
  if (pixbuf == NULL) {
 
232
    if (error != NULL) {
 
233
      g_warning ("Couldn't read file %s: %s", file, error->message);
 
234
      g_error_free (error);
 
235
    }
 
236
    return FALSE;
 
237
  }
 
238
 
 
239
  gtk_image_set_from_pixbuf (GTK_IMAGE (priv->image), pixbuf);
 
240
 
 
241
  g_object_unref (pixbuf);
 
242
 
 
243
  return TRUE;
 
244
}
 
245
 
 
246
static void
 
247
image_size_allocate (GtkWidget *widget,
 
248
                     GtkAllocation *allocation,
 
249
                     gpointer user_data)
 
250
{
 
251
  gint max = MAX (allocation->width, allocation->height);
 
252
 
 
253
  gtk_widget_set_size_request (widget, max, max);
 
254
}
 
255
 
 
256
static GObject*
 
257
about_me_menu_item_constructor (GType                  type,
 
258
                                guint                  n_construct_properties,
 
259
                                GObjectConstructParam *construct_params)
 
260
{
 
261
  GObject *object;
 
262
  GtkWidget *hbox;
 
263
  GtkWidget *align;
 
264
  AboutMeMenuItemPrivate *priv;
 
265
  object = G_OBJECT_CLASS (about_me_menu_item_parent_class)->constructor (type,
 
266
                                                                          n_construct_properties,
 
267
                                                                          construct_params);
 
268
 
 
269
  priv = GET_PRIVATE (object);
 
270
 
 
271
  GtkWidget *frame = gtk_frame_new (NULL);
 
272
  gdouble pixels_per_em = get_pixels_per_em (frame);
 
273
  GdkPixbuf *pixbuf = load_icon ("stock_person-panel", pixels_per_em * 3);
 
274
  if (pixbuf == NULL)
 
275
    pixbuf = load_icon ("stock_person", pixels_per_em * 3);
 
276
  priv->image = gtk_image_new_from_pixbuf (pixbuf);
 
277
  g_signal_connect (frame, "size-allocate", G_CALLBACK (image_size_allocate), NULL);
 
278
  gtk_misc_set_padding (GTK_MISC (priv->image), 2, 2);
 
279
  gtk_container_add (GTK_CONTAINER (frame), priv->image);
 
280
 
 
281
  align = gtk_alignment_new (0, 0.3, 0, 0);
 
282
  priv->label = gtk_label_new (priv->realname);
 
283
  gtk_misc_set_padding (GTK_MISC (priv->label), 2, 2);
 
284
  gtk_container_add (GTK_CONTAINER (align), priv->label);
 
285
 
 
286
  hbox = gtk_hbox_new (FALSE, 0);
 
287
  gtk_box_pack_start (GTK_BOX (hbox), frame, FALSE, FALSE, 0);
 
288
  gtk_box_pack_start (GTK_BOX (hbox), align, TRUE, TRUE, DEFAULT_PIXELS_PER_EM);
 
289
 
 
290
  gtk_container_add (GTK_CONTAINER (object), hbox);
 
291
  gtk_widget_show_all (GTK_WIDGET(object));
 
292
 
 
293
  priv->hbox = hbox;
 
294
  
 
295
  return object;
 
296
}
 
297
 
 
298
/**
 
299
 * about_me_menu_item_new:
 
300
 * @realname: the name to display in the new menu item.
 
301
 * @returns: a new #AboutMeMenuItem.
 
302
 *
 
303
 * Creates a new #AboutMeMenuItem with a name.
 
304
 **/
 
305
GtkWidget*
 
306
about_me_menu_item_new (const gchar *realname)
 
307
{
 
308
        return g_object_new (ABOUT_ME_TYPE_MENU_ITEM,
 
309
                       "realname", realname,
 
310
                       NULL);
 
311
}
 
312
 
 
313
#define __ABOUT_ME_MENU_ITEM_C__