[gimp/gtk3-port: 115/227] app: port setting the canvas padding color to GtkStyleContext

[Clayton Walker <claytonw src gnome org>]

commit 02073a6ba0f8aca664c6c86c1efee0ae2282f3a5
Author: Michael Natterer <mitch gimp org>
Date:   Sat Dec 18 23:20:52 2010 +0100

    app: port setting the canvas padding color to GtkStyleContext

 app/actions/view-actions.c                |   11 +++++------
 app/display/gimpdisplayshell-appearance.c |    8 ++------
 2 files changed, 7 insertions(+), 12 deletions(-)
---
diff --git a/app/actions/view-actions.c b/app/actions/view-actions.c
index c021aa8..8711f34 100644
--- a/app/actions/view-actions.c
+++ b/app/actions/view-actions.c
@@ -718,14 +718,13 @@ view_actions_update (GimpActionGroup *group,
 
       if (shell->canvas)
         {
-          GtkStyle *style = gtk_widget_get_style (shell->canvas);
-          GimpRGB   color;
+          GtkStyleContext *style = gtk_widget_get_style_context (shell->canvas);
+          GdkRGBA          color;
 
-          gtk_widget_ensure_style (shell->canvas);
-          gimp_rgb_set_gdk_color (&color, style->bg + GTK_STATE_NORMAL);
-          gimp_rgb_set_alpha (&color, GIMP_OPACITY_OPAQUE);
+          gtk_style_context_get_background_color (style, 0, &color);
+          gimp_rgb_set_alpha ((GimpRGB *) &color, GIMP_OPACITY_OPAQUE);
 
-          SET_COLOR ("view-padding-color-theme",  &color);
+          SET_COLOR ("view-padding-color-theme", (GimpRGB *) &color);
         }
     }
 
diff --git a/app/display/gimpdisplayshell-appearance.c b/app/display/gimpdisplayshell-appearance.c
index 7623ada..06ef249 100644
--- a/app/display/gimpdisplayshell-appearance.c
+++ b/app/display/gimpdisplayshell-appearance.c
@@ -446,13 +446,9 @@ gimp_display_shell_set_padding (GimpDisplayShell      *shell,
     case GIMP_CANVAS_PADDING_MODE_DEFAULT:
       if (shell->canvas)
         {
-          GtkStyle *style;
+          GtkStyleContext *style = gtk_widget_get_style_context (shell->canvas);
 
-          gtk_widget_ensure_style (shell->canvas);
-
-          style = gtk_widget_get_style (shell->canvas);
-
-          gimp_rgb_set_gdk_color (&color, style->bg + GTK_STATE_NORMAL);
+          gtk_style_context_get_background_color (style, 0, (GdkRGBA *) &color);
         }
       break;