1 files changed, 82 insertions, 0 deletions
diff --git a/shell/mate-utils.c b/shell/mate-utils.c
new file mode 100644
index 00000000..e42d02c4
--- /dev/null
+++ b/shell/mate-utils.c
@@ -0,0 +1,82 @@
+#include "mate-utils.h"
+
+#include <string.h>
+
+gboolean
+load_image_by_id (GtkImage *image, GtkIconSize size, const gchar *image_id)
+{
+	cairo_surface_t *surface;
+	gint width;
+	gint height;
+	gint scale_factor;
+
+	GtkIconTheme *icon_theme;
+
+	gchar *id;
+
+	gboolean icon_exists;
+
+	if (!image_id)
+		return FALSE;
+
+	id = g_strdup (image_id);
+	scale_factor = gtk_widget_get_scale_factor (GTK_WIDGET (image));
+
+	gtk_icon_size_lookup (size, &width, &height);
+	gtk_image_set_pixel_size (image, width);
+
+	if (g_path_is_absolute (id))
+	{
+		GdkPixbuf *pixbuf;
+
+		pixbuf = gdk_pixbuf_new_from_file_at_size (id, width * scale_factor, height * scale_factor, NULL);
+
+		icon_exists = (pixbuf != NULL);
+
+		if (icon_exists)
+		{
+			surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, scale_factor, NULL);
+			gtk_image_set_from_surface (image, surface);
+
+			cairo_surface_destroy (surface);
+			g_object_unref (pixbuf);
+		}
+		else
+			gtk_image_set_from_icon_name (image, "image-missing", size);
+	}
+	else
+	{
+		if (		/* file extensions are not copesetic with loading by "name" */
+			g_str_has_suffix (id, ".png") ||
+			g_str_has_suffix (id, ".svg") ||
+			g_str_has_suffix (id, ".xpm")
+		   )
+
+			id[strlen (id) - 4] = '\0';
+
+		if (gtk_widget_has_screen (GTK_WIDGET (image)))
+			icon_theme =
+				gtk_icon_theme_get_for_screen (gtk_widget_get_screen (GTK_WIDGET
+					(image)));
+		else
+			icon_theme = gtk_icon_theme_get_default ();
+
+		surface = gtk_icon_theme_load_surface (icon_theme, id,
+		                                       width, scale_factor,
+		                                       NULL,
+		                                       GTK_ICON_LOOKUP_FORCE_SIZE,
+		                                       NULL);
+		icon_exists = (surface != NULL);
+		if (icon_exists) {
+			gtk_image_set_from_surface (image, surface);
+			cairo_surface_destroy (surface);
+		}
+		else
+			gtk_image_set_from_icon_name (image, "image-missing", size);
+
+	}
+
+	g_free (id);
+
+	return icon_exists;
+}