[gtk+] icon theme: Add a way to create GtkIconInfos from files

[Matthias Clasen <matthiasc src gnome org>]

commit 7d717c8113dc25690088f1e81449e32e8f337a06
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 14 12:53:50 2016 -0500

    icon theme: Add a way to create GtkIconInfos from files
    
    This is sometimes needed, and calling into actual icon theme
    code just for it is confusing - the resulting icon does not
    depend on the icon theme at all.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760536

 gtk/gtkicontheme.c        |   71 ++++++++++++++++++++++++++++-----------------
 gtk/gtkiconthemeprivate.h |    5 +++
 2 files changed, 49 insertions(+), 27 deletions(-)
---
diff --git a/gtk/gtkicontheme.c b/gtk/gtkicontheme.c
index 00ae351..544f79e 100644
--- a/gtk/gtkicontheme.c
+++ b/gtk/gtkicontheme.c
@@ -37,7 +37,7 @@
 #include "win32/gdkwin32.h"
 #endif /* G_OS_WIN32 */
 
-#include "gtkicontheme.h"
+#include "gtkiconthemeprivate.h"
 #include "gtkcsspalettevalueprivate.h"
 #include "gtkcssrgbavalueprivate.h"
 #include "gtkdebug.h"
@@ -5464,37 +5464,20 @@ gtk_icon_theme_lookup_by_gicon_for_scale (GtkIconTheme       *icon_theme,
 
       return info;
     }
+  else if (G_IS_FILE_ICON (icon))
+    {
+      GFile *file = g_file_icon_get_file (G_FILE_ICON (icon));
+
+      info = gtk_icon_info_new_for_file (file, size, scale);
+      info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
+
+      return info;
+    }
   else if (G_IS_LOADABLE_ICON (icon))
     {
       info = icon_info_new (ICON_THEME_DIR_UNTHEMED, size, 1);
       info->loadable = G_LOADABLE_ICON (g_object_ref (icon));
       info->is_svg = FALSE;
-
-      if (G_IS_FILE_ICON (icon))
-        {
-          GFile *file = g_file_icon_get_file (G_FILE_ICON (icon));
-          if (file != NULL)
-            {
-              info->icon_file = g_object_ref (file);
-              info->is_resource = g_file_has_uri_scheme (file, "resource");
-
-              if (info->is_resource)
-                {
-                  gchar *uri;
-
-                  uri = g_file_get_uri (file);
-                  info->filename = g_strdup (uri + 11); /* resource:// */
-                  g_free (uri);
-                }
-              else
-                {
-                  info->filename = g_file_get_path (file);
-                }
-
-              info->is_svg = suffix_from_name (info->filename) == ICON_SUFFIX_SVG;
-            }
-        }
-
       info->desired_size = size;
       info->desired_scale = scale;
       info->forced_size = (flags & GTK_ICON_LOOKUP_FORCE_SIZE) != 0;
@@ -5573,3 +5556,37 @@ gtk_icon_info_new_for_pixbuf (GtkIconTheme *icon_theme,
 
   return info;
 }
+
+GtkIconInfo *
+gtk_icon_info_new_for_file (GFile *file,
+                            gint   size,
+                            gint   scale)
+{
+  GtkIconInfo *info;
+
+  info = icon_info_new (ICON_THEME_DIR_UNTHEMED, size, 1);
+  info->loadable = G_LOADABLE_ICON (g_file_icon_new (file));
+  info->icon_file = g_object_ref (file);
+  info->is_resource = g_file_has_uri_scheme (file, "resource");
+
+  if (info->is_resource)
+    {
+      gchar *uri;
+
+      uri = g_file_get_uri (file);
+      info->filename = g_strdup (uri + 11); /* resource:// */
+      g_free (uri);
+    }
+  else
+    {
+      info->filename = g_file_get_path (file);
+    }
+
+  info->is_svg = suffix_from_name (info->filename) == ICON_SUFFIX_SVG;
+
+ info->desired_size = size;
+ info->desired_scale = scale;
+ info->forced_size = FALSE;
+
+ return info;
+}
diff --git a/gtk/gtkiconthemeprivate.h b/gtk/gtkiconthemeprivate.h
index 77d9561..ca9d517 100644
--- a/gtk/gtkiconthemeprivate.h
+++ b/gtk/gtkiconthemeprivate.h
@@ -19,6 +19,7 @@
 #define __GTK_ICON_THEME_PRIVATE_H__
 
 #include <gtk/gtkicontheme.h>
+#include <gtk/gtkcssstyleprivate.h>
 
 void        gtk_icon_theme_lookup_symbolic_colors       (GtkCssStyle    *style,
                                                          GdkRGBA        *color_out,
@@ -26,4 +27,8 @@ void        gtk_icon_theme_lookup_symbolic_colors       (GtkCssStyle    *style,
                                                          GdkRGBA        *warning_out,
                                                          GdkRGBA        *error_out);
 
+GtkIconInfo *gtk_icon_info_new_for_file (GFile *file,
+                                         gint   size,
+                                         gint   scale);
+
 #endif /* __GTK_ICON_THEME_PRIVATE_H__ */