Added rgba_to_string()

src/CanvasRenderingContext2d.cc

@@ -1010,7 +1010,7 @@ Context2d::SetShadowColor(Local<String> prop, Local<Value> val, const AccessorIn
 Handle<Value>
 Context2d::GetShadowColor(Local<String> prop, const AccessorInfo &info) {
   Context2d *context = ObjectWrap::Unwrap<Context2d>(info.This());
-  return Null();
+  return String::New(rgba_to_string(context->state->shadow));
 }
 
 /*

src/color.cc

@@ -6,6 +6,7 @@
 //
 
 #include "color.h"
+#include <stdlib.h>
 
 /*
  * Consume whitespace.
@@ -234,6 +235,28 @@ rgba_create(uint32_t rgba) {
   return color;
 }
 
+/*
+ * Return a string representation of the color.
+ */
+
+char *
+rgba_to_string(rgba_t rgba) {
+  char *buf = (char *) malloc(64);
+  if (1 == rgba.a) {
+    sprintf(buf, "#%.2X%.2X%.2X"
+      , (int) (rgba.r * 255)
+      , (int) (rgba.g * 255)
+      , (int) (rgba.b * 255));
+  } else {
+    sprintf(buf, "rgba(%d, %d, %d, %.2f)"
+      , (int) (rgba.r * 255)
+      , (int) (rgba.g * 255)
+      , (int) (rgba.b * 255)
+      , rgba.a);
+  }
+  return buf;
+}
+
 /*
  * Return rgba from (r,g,b,a).
  */

src/color.h

@@ -30,6 +30,9 @@ rgba_create(uint32_t rgba);
 int32_t
 rgba_from_string(const char *str, short *ok);
 
+char *
+rgba_to_string(rgba_t rgba);
+
 void
 rgba_inspect(int32_t rgba);