[gtksourceview] GutterRenderer: fix coding style

[Sébastien Wilmet <swilmet src gnome org>]

commit fd210da357bae654347bb27c427ecfef0aca8ada
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Dec 3 19:11:08 2014 +0100

    GutterRenderer: fix coding style
    
    renderer->priv->view is a GtkTextView, so we check if it's a
    GtkSourceView. Once we know we have a GtkSourceView, we can assume that
    the buffer is a GtkSourceBuffer and that the style scheme is NULL or
    has the right type.
    
    Also, add curly braces around one-line blocks.

 gtksourceview/gtksourcegutterrenderer.c |   25 ++++++++++---------------
 1 files changed, 10 insertions(+), 15 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterrenderer.c b/gtksourceview/gtksourcegutterrenderer.c
index 4c285f6..d49924a 100644
--- a/gtksourceview/gtksourcegutterrenderer.c
+++ b/gtksourceview/gtksourcegutterrenderer.c
@@ -478,33 +478,28 @@ renderer_draw_impl (GtkSourceGutterRenderer      *renderer,
        if (renderer->priv->background_set)
        {
                cairo_save (cr);
-
                gdk_cairo_rectangle (cr, background_area);
                gdk_cairo_set_source_rgba (cr, &renderer->priv->background_color);
-
                cairo_fill (cr);
                cairo_restore (cr);
        }
-       else if ((state & GTK_SOURCE_GUTTER_RENDERER_STATE_CURSOR) != 0)
+       else if ((state & GTK_SOURCE_GUTTER_RENDERER_STATE_CURSOR) != 0 &&
+                GTK_SOURCE_IS_VIEW (renderer->priv->view))
        {
+               GtkSourceBuffer *buffer;
                GtkSourceStyleScheme *style_scheme;
-               GtkTextBuffer *buffer;
-               GtkTextView *view;
                GdkRGBA line_color;
 
-               view = gtk_source_gutter_renderer_get_view (renderer);
-               if (!gtk_source_view_get_highlight_current_line (GTK_SOURCE_VIEW (view)))
-                       return;
-
-               buffer = gtk_text_iter_get_buffer (start);
-               if (!GTK_SOURCE_IS_BUFFER (buffer))
+               if (!gtk_source_view_get_highlight_current_line (GTK_SOURCE_VIEW (renderer->priv->view)))
+               {
                        return;
+               }
 
-               style_scheme = gtk_source_buffer_get_style_scheme (GTK_SOURCE_BUFFER (buffer));
-               if (!GTK_SOURCE_IS_STYLE_SCHEME (style_scheme))
-                       return;
+               buffer = GTK_SOURCE_BUFFER (gtk_text_view_get_buffer (renderer->priv->view));
+               style_scheme = gtk_source_buffer_get_style_scheme (buffer);
 
-               if (_gtk_source_style_scheme_get_current_line_color (style_scheme, &line_color))
+               if (style_scheme != NULL &&
+                   _gtk_source_style_scheme_get_current_line_color (style_scheme, &line_color))
                {
                        cairo_save (cr);
                        gdk_cairo_rectangle (cr, background_area);