[gcr] ui: use gtk_render_background()

[Daiki Ueno <dueno src gnome org>]

commit e33bee8ba4b4ae965177bba15e02d66110835e64
Author: Dmitry Eremin-Solenikov <dbaryshkov gmail com>
Date:   Sun Jan 12 23:51:27 2020 +0300

    ui: use gtk_render_background()
    
    Instead of manually drawing piece of background using deprecated
    gtk_style_context_get_background_color(), use gtk_render_background()
    directly.
    
    Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov gmail com>

 ui/gcr-display-view.c | 20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)
---
diff --git a/ui/gcr-display-view.c b/ui/gcr-display-view.c
index d88b74d..3d7709a 100644
--- a/ui/gcr-display-view.c
+++ b/ui/gcr-display-view.c
@@ -457,7 +457,6 @@ paint_item_border (GcrDisplayView *self,
                    gint index,
                    cairo_t *cr)
 {
-       GdkRGBA color;
        GtkTextView *view;
        GtkTextIter iter, end;
        GdkRectangle location;
@@ -475,13 +474,6 @@ paint_item_border (GcrDisplayView *self,
 
        ensure_text_height (self);
 
-       gtk_style_context_save (context);
-       gtk_style_context_set_state (context, GTK_STATE_FLAG_SELECTED | GTK_STATE_FLAG_FOCUSED);
-       gtk_style_context_get_background_color (context,
-                                               gtk_style_context_get_state (context),
-                                               &color);
-       gtk_style_context_restore (context);
-
        gtk_text_view_get_iter_location (view, &iter, &location);
 
        location.height = 2;
@@ -492,17 +484,7 @@ paint_item_border (GcrDisplayView *self,
        if (!gdk_rectangle_intersect (visible, &location, NULL))
                return;
 
-       gtk_text_view_buffer_to_window_coords (view, GTK_TEXT_WINDOW_TEXT,
-                                              location.x, location.y,
-                                              &location.x, &location.y);
-
-       cairo_save (cr);
-       cairo_set_source_rgb (cr, color.red, color.green, color.blue);
-       cairo_set_line_width (cr, 0.5);
-       cairo_move_to (cr, location.x, location.y);
-       cairo_line_to (cr, location.x + location.width, location.y);
-       cairo_stroke (cr);
-       cairo_restore (cr);
+       gtk_render_background (context, cr, location.x, location.y - 0.5, location.width, 1);
 }
 
 static void