Re: 2.3 Feature Request: Inactive toolbar icons

[Chris Chabot <chabotc xs4all nl>]

Wowieee! i love it, sign me up for this patch; I tried it and aint
going back! ;-)
(Umm, i mean: yea, that looks 'ok')

    -- Chris

iain wrote:

fre, 2003-02-07 kl. 16:12 skrev shaihulud supereva it:
  

Jeff Waugh wrote:

    

We're mostly looking for "yes, I am coding >this feature" emails, rather than
suggestions. Sorry. :-) You may want to >lodge a GTK+ bug on this, though -
it would be much prettier!
      

- Jeff
      

Thanks iain for make the patch ! Here is a screenshot:
http://discomachinegun.prettypeople.org/~iain/insensitive.png

I think that would be better if the alpha  is scaled down at 75-80%. In this way the inactive icons look better on a light or dark background.
    

Alpha is now halfed. Attached patch does so. It could probably be made
faster, by replacing the 2 for loops with one.

http://www.prettypeople.org/~iain/insensitive2.png

iain

  

Index: gtkstyle.c
===================================================================
RCS file: /cvs/gnome/gtk+/gtk/gtkstyle.c,v
retrieving revision 1.139
diff -u -p -r1.139 gtkstyle.c
--- gtkstyle.c	10 Dec 2002 21:39:52 -0000	1.139
+++ gtkstyle.c	7 Feb 2003 16:43:53 -0000
@@ -1988,6 +1988,36 @@ scale_or_ref (GdkPixbuf *src,
     }
 }
 
+static void
+set_pixbuf_alpha (GdkPixbuf *src)
+{
+  int width, wb;
+  int height;
+  int rowstride;
+  gboolean has_alpha;
+  guchar *pixels, *p;
+  int i, j;
+
+  width = gdk_pixbuf_get_width (src);
+  height = gdk_pixbuf_get_height (src);
+  rowstride = gdk_pixbuf_get_rowstride (src);
+  has_alpha = gdk_pixbuf_get_has_alpha (src);
+
+  if (has_alpha == FALSE)
+    return;
+
+  pixels = gdk_pixbuf_get_pixels (src);
+
+  wb = width << 2;
+  for (i = 0; i < height; i ++)
+    {
+      p = pixels + (i * rowstride);
+    
+      for (j = 0; j < wb; j += 4)
+        p[j + 3] = p[j + 3] >> 2;
+    }
+}
+
 static GdkPixbuf *
 gtk_default_render_icon (GtkStyle            *style,
                          const GtkIconSource *source,
@@ -2054,8 +2084,9 @@ gtk_default_render_icon (GtkStyle       
           stated = gdk_pixbuf_copy (scaled);      
           
           gdk_pixbuf_saturate_and_pixelate (scaled, stated,
-                                            0.8, TRUE);
-          
+                                            0.0, FALSE);
+
+	  set_pixbuf_alpha (stated);
           g_object_unref (scaled);
         }
       else if (state == GTK_STATE_PRELIGHT)