added this new convenience function.

2004-03-07  Dodji Seketeli  <dodji@gnome.org>

* src/cr-rgb.[ch]:
(cr_rgb_compute_from_percentage): added this new convenience
function.

3 files changed, 39 insertions, 21 deletions

diff --git a/ChangeLog b/ChangeLog
index cbaa322..ab88143 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2004-03-07  Dodji Seketeli  <dodji@gnome.org>
+
+	* src/cr-rgb.[ch]:
+	(cr_rgb_compute_from_percentage): added this new convenience 
+	function.
 2004-03-06  Dodji  <dodji@gnome.org>
 
 	* src/cr-tknzr.c: 
diff --git a/src/cr-rgb.c b/src/cr-rgb.c
index b235d9b..d1c1c38 100644
--- a/src/cr-rgb.c
+++ b/src/cr-rgb.c
@@ -303,6 +303,26 @@ cr_rgb_dump (CRRgb *a_this, FILE *a_fp)
 }
 
 /**
+ *If the rgb values are expressed in percentage,
+ *compute their real value.
+ *@param a_this the current instance of #CRRgb
+ *@return
+ */
+enum CRStatus
+cr_rgb_compute_from_percentage (CRRgb *a_this)
+{
+        g_return_val_if_fail (a_this, CR_BAD_PARAM_ERROR) ;
+
+        if (a_this->is_percentage == FALSE)
+                return CR_OK ;
+        a_this->red = a_this->red * 255 / 100 ;
+        a_this->green = a_this->green * 255 / 100 ;
+        a_this->blue = a_this->blue * 255 / 100 ;
+        a_this->is_percentage = FALSE ;
+        return CR_OK ;
+}
+
+/**
  *Sets rgb values to the RGB.
  *@param a_this the current instance of #CRRgb.
  *@param a_red the red value.
diff --git a/src/cr-rgb.h b/src/cr-rgb.h
index 8c8e4b8..9a11e6c 100644
--- a/src/cr-rgb.h
+++ b/src/cr-rgb.h
@@ -49,35 +49,28 @@ struct _CRRgb
         gboolean is_percentage ;
 } ;
 
-CRRgb *
-cr_rgb_new (void) ;
+CRRgb * cr_rgb_new (void) ;
 
-CRRgb *
-cr_rgb_new_with_vals (gulong a_red, gulong a_green, 
-                      gulong a_blue, gboolean a_is_percentage) ;
+CRRgb * cr_rgb_new_with_vals (gulong a_red, gulong a_green, 
+                              gulong a_blue, gboolean a_is_percentage) ;
 
-enum CRStatus
-cr_rgb_set (CRRgb *a_this, gulong a_red,
-            gulong a_green, gulong a_blue,
-            gboolean a_is_percentage) ;
+enum CRStatus cr_rgb_compute_from_percentage (CRRgb *a_this) ;
+
+enum CRStatus cr_rgb_set (CRRgb *a_this, gulong a_red,
+                          gulong a_green, gulong a_blue,
+                          gboolean a_is_percentage) ;
         
-enum CRStatus
-cr_rgb_set_from_rgb (CRRgb *a_this, CRRgb *a_rgb) ;
+enum CRStatus cr_rgb_set_from_rgb (CRRgb *a_this, CRRgb *a_rgb) ;
 
-enum CRStatus
-cr_rgb_set_from_name (CRRgb *a_this, const guchar *a_color_name) ;
+enum CRStatus cr_rgb_set_from_name (CRRgb *a_this, const guchar *a_color_name) ;
 
-enum CRStatus
-cr_rgb_set_from_hex_str (CRRgb *a_this, const guchar * a_hex_value) ;
+enum CRStatus cr_rgb_set_from_hex_str (CRRgb *a_this, const guchar * a_hex_value) ;
 
-guchar *
-cr_rgb_to_string (CRRgb *a_this) ;
+guchar * cr_rgb_to_string (CRRgb *a_this) ;
 
-void
-cr_rgb_dump (CRRgb *a_this, FILE *a_fp) ;
+void cr_rgb_dump (CRRgb *a_this, FILE *a_fp) ;
 
-void
-cr_rgb_destroy (CRRgb *a_this) ;
+void cr_rgb_destroy (CRRgb *a_this) ;
 
 G_END_DECLS