[gimp] app: draw the curve view's background with cairo

[Michael Natterer <mitch src gnome org>]

commit 06488d03feabed8edc3d796fc0425e8d1fe93958
Author: Michael Natterer <mitch gimp org>
Date:   Wed Jul 28 16:15:54 2010 +0200

    app: draw the curve view's background with cairo
    
    and fix focus line drawing by one pixel.

 app/widgets/gimpcurveview.c |   42 ++++++++++++++++++++++--------------------
 1 files changed, 22 insertions(+), 20 deletions(-)
---
diff --git a/app/widgets/gimpcurveview.c b/app/widgets/gimpcurveview.c
index 3627b43..0b181a4 100644
--- a/app/widgets/gimpcurveview.c
+++ b/app/widgets/gimpcurveview.c
@@ -481,21 +481,30 @@ gimp_curve_view_expose (GtkWidget      *widget,
   width  = allocation.width  - 2 * border - 1;
   height = allocation.height - 2 * border - 1;
 
+  cr = gdk_cairo_create (gtk_widget_get_window (widget));
+
+  gdk_cairo_region (cr, event->region);
+  cairo_clip (cr);
+
   if (! gimp_histogram_view_get_histogram (GIMP_HISTOGRAM_VIEW (view)) &&
       ! gimp_histogram_view_get_background (GIMP_HISTOGRAM_VIEW (view)))
     {
+      gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_NORMAL]);
+      cairo_rectangle (cr, 0, 0,
+                       allocation.width,
+                       allocation.height);
+      cairo_fill (cr);
 
-      gdk_draw_rectangle (window,
-                          style->base_gc[GTK_STATE_NORMAL], TRUE,
-                          0, 0,
-                          allocation.width,
-                          allocation.height);
-
-      /*  Draw the outer border  */
-      gdk_draw_rectangle (window,
-                          style->dark_gc[GTK_STATE_NORMAL], FALSE,
-                          border, border,
-                          width - 1, height - 1);
+      cairo_translate (cr, 0.5, 0.5);
+
+      gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_NORMAL]);
+      cairo_rectangle (cr, border, border,
+                       width - 1, height - 1);
+      cairo_stroke (cr);
+    }
+  else
+    {
+      cairo_translate (cr, 0.5, 0.5);
     }
 
   if (gtk_widget_has_focus (widget))
@@ -504,16 +513,9 @@ gimp_curve_view_expose (GtkWidget      *widget,
                        gtk_widget_get_state (widget),
                        &event->area, widget, NULL,
                        border - 2, border - 2,
-                       width + 4, height + 4);
+                       width + 5, height + 5);
     }
 
-  cr = gdk_cairo_create (gtk_widget_get_window (widget));
-
-  gdk_cairo_region (cr, event->region);
-  cairo_clip (cr);
-
-  cairo_translate (cr, 0.5, 0.5);
-
   /*  Draw the grid lines  */
   gimp_curve_view_draw_grid (view, style, cr, width, height, border);