Implement EmpathyAvatarChooser and EmpathyAvatarImage and make use of them

2007-10-08  Xavier Claessens  <xclaesse@gmail.com>

	* libempathy-gtk/empathy-ui-utils.c:
	* libempathy-gtk/empathy-ui-utils.h:
	* libempathy-gtk/empathy-contact-widget.c:
	* libempathy-gtk/empathy-contact-widget.h:
	* libempathy-gtk/empathy-avatar-chooser.c:
	* libempathy-gtk/empathy-avatar-chooser.h:
	* libempathy-gtk/empathy-avatar-image.c:
	* libempathy-gtk/empathy-avatar-image.h:
	* libempathy-gtk/Makefile.am:
	* src/empathy.c: Implement EmpathyAvatarChooser and EmpathyAvatarImage
	and make use of them in contact information windows. That means we can
	now enlarge avatars when clicking on it and we can set our own avatar if
	we edit our own contact.


svn path=/trunk/; revision=363

1 files changed, 90 insertions, 29 deletions

diff --git a/libempathy-gtk/empathy-ui-utils.c b/libempathy-gtk/empathy-ui-utils.c
index 1c2d79c7b..fe032c9ee 100644
--- a/libempathy-gtk/empathy-ui-utils.c
+++ b/libempathy-gtk/empathy-ui-utils.c
@@ -201,35 +201,6 @@ empathy_glade_setup_size_group (GladeXML         *gui,
 	va_end (args);
 }
 
-GdkPixbuf *
-empathy_pixbuf_from_icon_name (const gchar *icon_name,
-			      GtkIconSize  icon_size)
-{
-	GtkIconTheme  *theme;
-	GdkPixbuf     *pixbuf = NULL;
-	GError        *error = NULL;
-	gint           w, h;
-	gint           size = 48;
-
-	theme = gtk_icon_theme_get_default ();
-
-	if (gtk_icon_size_lookup (icon_size, &w, &h)) {
-		size = (w + h) / 2;
-	}
-
-	pixbuf = gtk_icon_theme_load_icon (theme,
-					   icon_name,
-					   size,
-					   0,
-					   &error);
-	if (error) {
-		empathy_debug (DEBUG_DOMAIN, "Error loading icon: %s", error->message);
-		g_clear_error (&error);
-	}
-
-	return pixbuf;
-}
-
 const gchar *
 empathy_icon_name_from_account (McAccount *account)
 {
@@ -293,6 +264,44 @@ empathy_icon_name_for_contact (EmpathyContact *contact)
 	return EMPATHY_IMAGE_UNKNOWN;
 }
 
+GdkPixbuf *
+empathy_pixbuf_from_data (gchar *data,
+			  gsize  data_size)
+{
+	GdkPixbufLoader *loader;
+	GdkPixbuf       *pixbuf = NULL;
+	GError          *error = NULL;
+
+	if (!data) {
+		return NULL;
+	}
+
+	loader = gdk_pixbuf_loader_new ();
+	if (!gdk_pixbuf_loader_write (loader, data, data_size, &error)) {
+		empathy_debug (DEBUG_DOMAIN, "Failed to write to pixbuf loader: %s",
+			       error ? error->message : "No error given");
+		g_clear_error (&error);
+		g_object_unref (loader);
+		return NULL;
+	}
+	if (!gdk_pixbuf_loader_close (loader, &error)) {
+		empathy_debug (DEBUG_DOMAIN, "Failed to close pixbuf loader: %s",
+			       error ? error->message : "No error given");
+		g_clear_error (&error);
+		g_object_unref (loader);
+		return NULL;
+	}
+
+	pixbuf = gdk_pixbuf_loader_get_pixbuf (loader);
+	if (pixbuf) {
+		g_object_ref (pixbuf);
+	}
+
+	g_object_unref (loader);
+
+	return pixbuf;
+}
+
 static void
 pixbuf_from_avatar_size_prepared_cb (GdkPixbufLoader *loader,
 				     int              width,
@@ -488,6 +497,58 @@ empathy_pixbuf_avatar_from_contact_scaled (EmpathyContact *contact,
 	return empathy_pixbuf_from_avatar_scaled (avatar, width, height);
 }
 
+GdkPixbuf *
+empathy_pixbuf_scale_down_if_necessary (GdkPixbuf *pixbuf, gint max_size)
+{
+	gint      width, height;
+	gdouble   factor;
+
+	width = gdk_pixbuf_get_width (pixbuf);
+	height = gdk_pixbuf_get_height (pixbuf);
+
+	if (width > max_size || height > max_size) {
+		factor = (gdouble) max_size / MAX (width, height);
+
+		width = width * factor;
+		height = height * factor;
+
+		return gdk_pixbuf_scale_simple (pixbuf,
+						width, height,
+						GDK_INTERP_HYPER);
+	}
+
+	return g_object_ref (pixbuf);
+}
+
+GdkPixbuf *
+empathy_pixbuf_from_icon_name (const gchar *icon_name,
+			      GtkIconSize  icon_size)
+{
+	GtkIconTheme  *theme;
+	GdkPixbuf     *pixbuf = NULL;
+	GError        *error = NULL;
+	gint           w, h;
+	gint           size = 48;
+
+	theme = gtk_icon_theme_get_default ();
+
+	if (gtk_icon_size_lookup (icon_size, &w, &h)) {
+		size = (w + h) / 2;
+	}
+
+	pixbuf = gtk_icon_theme_load_icon (theme,
+					   icon_name,
+					   size,
+					   0,
+					   &error);
+	if (error) {
+		empathy_debug (DEBUG_DOMAIN, "Error loading icon: %s", error->message);
+		g_clear_error (&error);
+	}
+
+	return pixbuf;
+}
+
 /* Stolen from GtkSourceView, hence the weird intendation. Please keep it like
  * that to make it easier to apply changes from the original code.
  */