X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Foptions.c;h=a212d1c63ee5190c752a7a007087df6338c47087;hb=71c7e8fef1569b84eb33192cff60c57b5c22c0c6;hp=c3dcf915a87ba0ed0d192ae95b18097ad12374f7;hpb=a06dd54ab3d37656a1edfb8ee7de859cc0baac0e;p=pspp

diff --git a/src/output/options.c b/src/output/options.c
index c3dcf915a8..a212d1c63e 100644
--- a/src/output/options.c
+++ b/src/output/options.c
@@ -51,8 +51,8 @@ driver_option_create (const char *driver_name, const char *name,
   struct driver_option *o = xmalloc (sizeof *o);
   o->driver_name = xstrdup (driver_name);
   o->name = xstrdup (name);
-  o->value = value != NULL ? xstrdup (value) : NULL;
-  o->default_value = default_value ? xstrdup (default_value) : NULL;
+  o->value = xstrdup_if_nonnull (value);
+  o->default_value = xstrdup_if_nonnull (default_value);
   return o;
 }
 
@@ -516,7 +516,7 @@ lookup_color_name (const char *s)
   return -1;
 }
 
-static bool
+bool
 parse_color__ (const char *s, struct cell_color *color)
 {
   /* #rrrrggggbbbb */
@@ -530,6 +530,7 @@ parse_color__ (const char *s, struct cell_color *color)
       color->r = r16 >> 8;
       color->g = g16 >> 8;
       color->b = b16 >> 8;
+      color->alpha = 255;
       return true;
     }
 
@@ -542,6 +543,7 @@ parse_color__ (const char *s, struct cell_color *color)
       color->r = r;
       color->g = g;
       color->b = b;
+      color->alpha = 255;
       return true;
     }
 
@@ -553,6 +555,7 @@ parse_color__ (const char *s, struct cell_color *color)
       color->r = r;
       color->g = g;
       color->b = b;
+      color->alpha = 255;
       return true;
     }
 
@@ -564,17 +567,20 @@ parse_color__ (const char *s, struct cell_color *color)
       color->r = r;
       color->g = g;
       color->b = b;
+      color->alpha = 255;
       return true;
     }
 
   /* rgba(r,g,b,a), ignoring a. */
-  if (sscanf (s, "rgba (%"SCNi8" , %"SCNi8" , %"SCNi8", %*f) %n",
-              &r, &g, &b, &len) == 3
+  double alpha;
+  if (sscanf (s, "rgba (%"SCNi8" , %"SCNi8" , %"SCNi8", %lf) %n",
+              &r, &g, &b, &alpha, &len) == 4
       && !s[len])
     {
       color->r = r;
       color->g = g;
       color->b = b;
+      color->alpha = alpha <= 0 ? 0 : alpha >= 1 ? 255 : alpha * 255.0;
       return true;
     }
 
@@ -584,6 +590,13 @@ parse_color__ (const char *s, struct cell_color *color)
       color->r = code >> 16;
       color->g = code >> 8;
       color->b = code;
+      color->alpha = 255;
+      return true;
+    }
+
+  if (!strcmp (s, "transparent"))
+    {
+      *color = (struct cell_color) { .alpha = 0 };
       return true;
     }
 
@@ -594,20 +607,15 @@ parse_color__ (const char *s, struct cell_color *color)
 struct cell_color
 parse_color (struct driver_option *o)
 {
+  struct cell_color color = CELL_COLOR_BLACK;
+  parse_color__ (o->default_value, &color);
   if (o->value)
     {
-      struct cell_color color;
-      if (parse_color__ (o->value, &color))
-        return color;
-
-      msg (MW, _("%s: `%s' is `%s', which could not be parsed as a color"),
-           o->driver_name, o->name, o->value);
+      if (!parse_color__ (o->value, &color))
+        msg (MW, _("%s: `%s' is `%s', which could not be parsed as a color"),
+             o->driver_name, o->name, o->value);
     }
-
-  struct cell_color color;
-  if (parse_color__ (o->default_value, &color))
-    return color;
-
-  return (struct cell_color) CELL_COLOR_BLACK;
+  driver_option_destroy (o);
+  return color;
 }