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authorXavier Claessens <xclaesse@src.gnome.org>2008-11-11 23:26:25 +0800
committerXavier Claessens <xclaesse@src.gnome.org>2008-11-11 23:26:25 +0800
commitce2278d49d963ee05c59a17c4d52d0098bf2de41 (patch)
tree4c2429f43b0c15df2295bc71efffa1c90566fe12 /libempathy-gtk
parentc9c6a8c33c566491795e014bea861c57fa6c4bd1 (diff)
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Implement scaling and converting avatars before sending.
svn path=/trunk/; revision=1682
Diffstat (limited to 'libempathy-gtk')
-rw-r--r--libempathy-gtk/empathy-avatar-chooser.c330
1 files changed, 265 insertions, 65 deletions
diff --git a/libempathy-gtk/empathy-avatar-chooser.c b/libempathy-gtk/empathy-avatar-chooser.c
index 72f3d0970..670cbd7b1 100644
--- a/libempathy-gtk/empathy-avatar-chooser.c
+++ b/libempathy-gtk/empathy-avatar-chooser.c
@@ -49,15 +49,13 @@ typedef struct {
gulong ready_handler_id;
- gchar *image_data;
- gsize image_data_size;
- gchar *mime_type;
+ EmpathyAvatar *avatar;
} EmpathyAvatarChooserPriv;
static void avatar_chooser_finalize (GObject *object);
static void avatar_chooser_set_account (EmpathyAvatarChooser *self,
McAccount *account);
-static void avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
+static void avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
gchar *data,
gsize size,
gboolean set_locally);
@@ -254,8 +252,9 @@ avatar_chooser_finalize (GObject *object)
avatar_chooser_set_account (EMPATHY_AVATAR_CHOOSER (object), NULL);
g_assert (priv->account == NULL && priv->tp_contact_factory == NULL);
- g_free (priv->image_data);
- g_free (priv->mime_type);
+ if (priv->avatar != NULL) {
+ empathy_avatar_unref (priv->avatar);
+ }
G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
}
@@ -310,47 +309,248 @@ avatar_chooser_set_account (EmpathyAvatarChooser *self,
}
-static void
-avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
- GdkPixbuf *pixbuf,
- gchar *image_data,
- gsize image_data_size,
- gchar *mime_type,
- gboolean set_locally)
+static gboolean
+str_in_strv (gchar *str,
+ gchar **strv)
{
- EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
- GtkWidget *image;
- GdkPixbuf *pixbuf_view = NULL;
+ if (strv == NULL)
+ return FALSE;
+ while (*strv != NULL)
+ {
+ if (g_str_equal (str, *strv))
+ return TRUE;
+ strv++;
+ }
+ return FALSE;
+}
- g_free (priv->image_data);
- g_free (priv->mime_type);
- priv->image_data = NULL;
- priv->image_data_size = 0;
- priv->mime_type = NULL;
+/* The caller must free the strings stored in satisfactory_format_name and
+ * satisfactory_mime_type.
+ */
+static gboolean
+can_satisfy_mime_type_requirements (gchar **accepted_mime_types,
+ gchar **satisfactory_format_name,
+ gchar **satisfactory_mime_type)
+{
+ GSList *formats;
+ GSList *i;
+ gchar **j;
+ gboolean done = FALSE;
+
+ if (accepted_mime_types == NULL || *accepted_mime_types == NULL)
+ return FALSE;
+
+ g_assert (satisfactory_format_name != NULL);
+ g_assert (satisfactory_mime_type != NULL);
+
+ formats = gdk_pixbuf_get_formats ();
+
+ for (i = formats; !done && i != NULL; i = i->next) {
+ GdkPixbufFormat *format = i->data;
+ gchar **format_mime_types;
- if (pixbuf) {
- priv->image_data = image_data;
- priv->image_data_size = image_data_size;
- priv->mime_type = mime_type;
+ if (!gdk_pixbuf_format_is_writable (format))
+ continue;
- pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
- image = gtk_image_new_from_pixbuf (pixbuf_view);
- g_object_unref (pixbuf_view);
+ format_mime_types = gdk_pixbuf_format_get_mime_types (format);
+ for (j = accepted_mime_types; *j != NULL; j++) {
+ if (str_in_strv (*j, format_mime_types)) {
+ *satisfactory_format_name = gdk_pixbuf_format_get_name (format);
+ *satisfactory_mime_type = g_strdup (*j);
+ done = TRUE;
+ break;
+ }
+ }
+ g_strfreev (format_mime_types);
+ }
+
+ g_slist_free (formats);
+
+ return done;
+}
+
+
+static EmpathyAvatar *
+avatar_chooser_convert (EmpathyAvatarChooser *chooser,
+ GdkPixbuf *pixbuf_scaled,
+ gchar **mime_types,
+ gsize max_size)
+{
+ gchar *format_name = NULL, *new_mime_type = NULL;
+
+ gchar *converted_image_data = NULL;
+ gsize converted_image_size = 0;
+ EmpathyAvatar *converted_avatar = NULL;
+
+ gboolean saved;
+ GError *error = NULL;
+
+ if (!can_satisfy_mime_type_requirements (mime_types, &format_name,
+ &new_mime_type)) {
+ DEBUG ("Mon dieu! Can't convert to any acceptable format!");
+ return NULL;
+ }
+
+ saved = gdk_pixbuf_save_to_buffer (pixbuf_scaled, &converted_image_data,
+ &converted_image_size, format_name, &error, NULL);
+ g_free (format_name);
+
+ if (!saved) {
+ DEBUG ("Couldn't convert image: %s", error->message);
+ g_error_free (error);
+
+ g_free (new_mime_type);
+ return NULL;
+ }
+
+ /* Takes ownership of new_mime_type */
+ converted_avatar = empathy_avatar_new (converted_image_data,
+ converted_image_size, new_mime_type, NULL);
+
+ if (max_size > 0 && converted_avatar->len > max_size) {
+ /* TODO: We could try converting to a different format; in
+ * particular, try converting to jpeg with increasingly
+ * high compression (if jpeg is supported). Not sure how
+ * much we care.
+ */
+ DEBUG ("Converted the image, but the new filesize is too big");
+
+ empathy_avatar_unref (converted_avatar);
+ converted_avatar = NULL;
+ }
+
+ return converted_avatar;
+}
+
+
+static EmpathyAvatar *
+avatar_chooser_maybe_convert_and_scale (EmpathyAvatarChooser *chooser,
+ GdkPixbuf *pixbuf,
+ EmpathyAvatar *avatar)
+{
+ EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
+ EmpathyTpContactFactory *tp_cf = priv->tp_contact_factory;
+
+ gint max_width = 0, max_height = 0, max_size = 0;
+ gchar **mime_types = NULL;
+ gboolean needs_conversion = FALSE;
+
+ GdkPixbuf *pixbuf_scaled = NULL;
+
+ /* This should only be called if the user is setting a new avatar,
+ * which should only be allowed once the avatar requirements have been
+ * discovered.
+ */
+ g_return_val_if_fail (tp_cf != NULL, NULL);
+ g_return_val_if_fail (empathy_tp_contact_factory_is_ready (tp_cf),
+ NULL);
+
+ g_object_get (tp_cf,
+ "avatar-mime-types", &mime_types, /* Needs g_strfreev-ing */
+ "avatar-max-width", &max_width,
+ "avatar-max-height", &max_height,
+ "avatar-max-size", &max_size,
+ NULL);
+
+ /* If the avatar's not already the right type, it needs converting. */
+ if (!str_in_strv (avatar->format, mime_types))
+ needs_conversion = TRUE;
+
+ /* If scaling down the pixbuf to fit the dimensions yields a new
+ * pixbuf, then it needed scaling. if it's the same pixbuf, it did not.
+ */
+ pixbuf_scaled = empathy_pixbuf_scale_down_if_necessary (pixbuf,
+ MIN(max_width, max_height));
+ if (pixbuf_scaled != pixbuf)
+ needs_conversion = TRUE;
+
+ if (max_size > 0 && avatar->len > max_size)
+ needs_conversion = TRUE;
+
+ if (needs_conversion) {
+ avatar = avatar_chooser_convert (chooser, pixbuf_scaled,
+ mime_types, max_size);
} else {
- image = gtk_image_new_from_icon_name ("stock_person",
- GTK_ICON_SIZE_DIALOG);
+ /* Just return another reference to the avatar passed in. */
+ avatar = empathy_avatar_ref (avatar);
}
+ g_object_unref (pixbuf_scaled);
+ g_strfreev (mime_types);
+ return avatar;
+}
+
+
+static void
+avatar_chooser_clear_image (EmpathyAvatarChooser *chooser)
+{
+ EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
+ GtkWidget *image;
+
+ if (priv->avatar == NULL)
+ return;
+
+ empathy_avatar_unref (priv->avatar);
+ priv->avatar = NULL;
+
+ image = gtk_image_new_from_icon_name ("stock_person", GTK_ICON_SIZE_DIALOG);
gtk_button_set_image (GTK_BUTTON (chooser), image);
g_signal_emit (chooser, signals[CHANGED], 0);
}
static void
-avatar_chooser_clear_image (EmpathyAvatarChooser *chooser,
- gboolean set_locally)
+avatar_chooser_set_image (EmpathyAvatarChooser *chooser,
+ gchar *data,
+ gsize size,
+ gboolean set_locally)
{
- avatar_chooser_set_image (chooser, NULL, NULL, 0, NULL, set_locally);
+ EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
+
+ GdkPixbuf *pixbuf, *pixbuf_view;
+ GtkWidget *image;
+ EmpathyAvatar *avatar = NULL;
+ gchar *mime_type = NULL;
+
+ if (data == NULL || size == 0) {
+ avatar_chooser_clear_image (chooser);
+ g_free (data);
+ return;
+ }
+
+ pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
+ if (pixbuf == NULL) {
+ g_free (data);
+ return;
+ }
+
+ /* avatar takes ownership of data and mime_type */
+ avatar = empathy_avatar_new (data, size, mime_type, NULL);
+
+ if (set_locally) {
+ EmpathyAvatar *conv = avatar_chooser_maybe_convert_and_scale (
+ chooser, pixbuf, avatar);
+ empathy_avatar_unref (avatar);
+ avatar = conv;
+ }
+
+ if (avatar == NULL) {
+ /* An error occured; don't change the avatar. */
+ return;
+ }
+
+ if (priv->avatar != NULL)
+ empathy_avatar_unref (priv->avatar);
+ priv->avatar = avatar;
+
+ pixbuf_view = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_SIZE_VIEW);
+ image = gtk_image_new_from_pixbuf (pixbuf_view);
+
+ gtk_button_set_image (GTK_BUTTON (chooser), image);
+ g_signal_emit (chooser, signals[CHANGED], 0);
+
+ g_object_unref (pixbuf_view);
+ g_object_unref (pixbuf);
}
static void
@@ -371,23 +571,7 @@ avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
return;
}
- avatar_chooser_set_image_from_data (chooser, image_data, image_size, TRUE);
-}
-
-static void
-avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
- gchar *data,
- gsize size,
- gboolean set_locally)
-{
- GdkPixbuf *pixbuf;
- gchar *mime_type = NULL;
-
- pixbuf = empathy_pixbuf_from_data (data, size, &mime_type);
- avatar_chooser_set_image (chooser, pixbuf, data, size, mime_type, set_locally);
- if (pixbuf) {
- g_object_unref (pixbuf);
- }
+ avatar_chooser_set_image (chooser, image_data, image_size, TRUE);
}
static gboolean
@@ -517,10 +701,10 @@ avatar_chooser_drag_data_received_cb (GtkWidget *widget,
data, size,
NULL, NULL);
if (bytes_read != -1) {
- avatar_chooser_set_image_from_data (chooser,
- data,
- (gsize) bytes_read,
- TRUE);
+ avatar_chooser_set_image (chooser,
+ data,
+ (gsize) bytes_read,
+ TRUE);
handled = TRUE;
}
@@ -591,7 +775,8 @@ avatar_chooser_response_cb (GtkWidget *widget,
}
}
else if (response == GTK_RESPONSE_NO) {
- avatar_chooser_clear_image (chooser, TRUE);
+ /* This corresponds to "No Image", not to "Cancel" */
+ avatar_chooser_clear_image (chooser);
}
gtk_widget_destroy (widget);
@@ -698,6 +883,9 @@ empathy_avatar_chooser_new (EmpathyContactFactory *contact_factory)
NULL);
}
+/* TODO: when the avatar passed to this function actually can be relied upon to
+ * contain a mime type, we can probably just ref it and store it.
+ */
void
empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
EmpathyAvatar *avatar)
@@ -706,9 +894,9 @@ empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
if (avatar != NULL) {
gchar *data = g_memdup (avatar->data, avatar->len);
- avatar_chooser_set_image_from_data (chooser, data, avatar->len, FALSE);
+ avatar_chooser_set_image (chooser, data, avatar->len, FALSE);
} else {
- avatar_chooser_clear_image (chooser, FALSE);
+ avatar_chooser_clear_image (chooser);
}
}
@@ -724,14 +912,26 @@ empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser *chooser,
priv = GET_PRIV (chooser);
- if (data) {
- *data = priv->image_data;
- }
- if (data_size) {
- *data_size = priv->image_data_size;
- }
- if (mime_type) {
- *mime_type = priv->mime_type;
+ if (priv->avatar != NULL) {
+ if (data != NULL) {
+ *data = priv->avatar->data;
+ }
+ if (data_size != NULL) {
+ *data_size = priv->avatar->len;
+ }
+ if (mime_type != NULL) {
+ *mime_type = priv->avatar->format;
+ }
+ } else {
+ if (data != NULL) {
+ *data = NULL;
+ }
+ if (data_size != NULL) {
+ *data_size = 0;
+ }
+ if (mime_type != NULL) {
+ *mime_type = NULL;
+ }
}
}