keep same warning for alpha as previously (might do the same for RGB as well), this will be useful for hue in HSL, as the previous warning infer clipping which is not always the case

Author: ylafon

org/w3c/css/values/RGBA.java

@@ -15,7 +15,6 @@
 
 import org.w3c.css.util.ApplContext;
 import org.w3c.css.util.InvalidParamException;
-import org.w3c.css.util.Util;
 
 public class RGBA extends RGB {
     static final String functionname = "rgba";
@@ -35,15 +34,16 @@ public final void setAlpha(ApplContext ac, CssValue val)
         } else {
             if (val.getType() == CssTypes.CSS_NUMBER) {
                 CssCheckableValue v = val.getCheckableValue();
-                if (!v.warnPositiveness(ac, "RGBA")) {
+                if (!v.isPositive()) {
+                    ac.getFrame().addWarning("out-of-range", val.toString());
                     CssNumber nb = new CssNumber();
                     nb.setIntValue(0);
                     nv = nb;
                 }
                 if (val.getRawType() == CssTypes.CSS_NUMBER) {
                     float p = ((CssNumber) val).getValue();
                     if (p > 1.) {
-                        ac.getFrame().addWarning("out-of-range", Util.displayFloat(p));
+                        ac.getFrame().addWarning("out-of-range", val.toString());
                         CssNumber nb = new CssNumber();
                         nb.setIntValue(1);
                         nv = nb;
@@ -52,15 +52,16 @@ public final void setAlpha(ApplContext ac, CssValue val)
             } else if (val.getType() == CssTypes.CSS_PERCENTAGE) {
                 // This starts with CSS Color 4
                 CssCheckableValue v = val.getCheckableValue();
-                if (!v.warnPositiveness(ac, "RGB")) {
+                if (!v.isPositive()) {
+                    ac.getFrame().addWarning("out-of-range", val.toString());
                     CssNumber nb = new CssNumber();
                     nb.setIntValue(0);
                     nv = nb;
                 }
                 if (val.getRawType() == CssTypes.CSS_PERCENTAGE) {
                     float p = ((CssPercentage) val).floatValue();
                     if (p > 100.) {
-                        ac.getFrame().addWarning("out-of-range", Util.displayFloat(p));
+                        ac.getFrame().addWarning("out-of-range", val.toString());
                         nv = new CssPercentage(100);
                     }
                 }