[gimp] app: use GdkRGBA instead of GdkColor in some places

[Michael Natterer <mitch src gnome org>]

commit 4b322b8326db867bd42c3ce1e0845c56fccbe0fc
Author: Michael Natterer <mitch gimp org>
Date:   Wed Feb 23 08:04:07 2011 +0100

    app: use GdkRGBA instead of GdkColor in some places

 app/display/gimpcanvas.c |    5 ++---
 app/gui/splash.c         |   13 +++++++------
 2 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/app/display/gimpcanvas.c b/app/display/gimpcanvas.c
index eb681f2..0ce3b93 100644
--- a/app/display/gimpcanvas.c
+++ b/app/display/gimpcanvas.c
@@ -277,13 +277,12 @@ gimp_canvas_set_bg_color (GimpCanvas *canvas,
                           GimpRGB    *color)
 {
   GtkWidget *widget = GTK_WIDGET (canvas);
-  GdkColor   gdk_color;
 
   if (! gtk_widget_get_realized (widget))
     return;
 
-  gimp_rgb_get_gdk_color (color, &gdk_color);
-  gdk_window_set_background (gtk_widget_get_window (widget), &gdk_color);
+  gdk_window_set_background_rgba (gtk_widget_get_window (widget),
+                                  (GdkRGBA *) color);
 
   gtk_widget_queue_draw (GTK_WIDGET (canvas));
 }
diff --git a/app/gui/splash.c b/app/gui/splash.c
index 58a8c87..6455f3b 100644
--- a/app/gui/splash.c
+++ b/app/gui/splash.c
@@ -47,7 +47,7 @@ typedef struct
   gint            width;
   gint            height;
   GtkWidget      *progress;
-  GdkColor        color;
+  GdkRGBA         color;
   PangoLayout    *upper;
   gint            upper_x;
   gint            upper_y;
@@ -73,14 +73,14 @@ static void        splash_position_layouts     (GimpSplash     *splash,
                                                 GdkRectangle   *area);
 static gboolean    splash_area_draw            (GtkWidget      *widget,
                                                 cairo_t        *cr,
-                                               GimpSplash      *splash);
+                                                GimpSplash     *splash);
 static void        splash_rectangle_union      (GdkRectangle   *dest,
                                                 PangoRectangle *pango_rect,
                                                 gint            offset_x,
                                                 gint            offset_y);
 static void        splash_average_text_area    (GimpSplash     *splash,
                                                 GdkPixbuf      *pixbuf,
-                                                GdkColor       *color);
+                                                GdkRGBA        *rgba);
 
 static GdkPixbufAnimation *
                    splash_image_load           (gint            max_width,
@@ -293,7 +293,7 @@ splash_area_draw (GtkWidget  *widget,
                   cairo_t    *cr,
                   GimpSplash *splash)
 {
-  gdk_cairo_set_source_color (cr, &splash->color);
+  gdk_cairo_set_source_rgba (cr, &splash->color);
 
   cairo_move_to (cr, splash->upper_x, splash->upper_y);
   pango_cairo_show_layout (cr, splash->upper);
@@ -409,7 +409,7 @@ splash_rectangle_union (GdkRectangle   *dest,
 static void
 splash_average_text_area (GimpSplash *splash,
                           GdkPixbuf  *pixbuf,
-                          GdkColor   *color)
+                          GdkRGBA    *color)
 {
   const guchar *pixels;
   gint          rowstride;
@@ -464,7 +464,8 @@ splash_average_text_area (GimpSplash *splash,
 
     }
 
-  color->red = color->green = color->blue = (luminance << 8 | luminance);
+  color->red = color->green = color->blue = (luminance << 8 | luminance) / 255.0;
+  color->alpha = 1.0;
 }
 
 static GdkPixbufAnimation *