[SVGDom] Add opacity support

experimental/svg/model/SkSVGNode.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkMatrix.h"
 #include "SkSVGNode.h"
@@ skipping 24 matching lines @@
 
 void SkSVGNode::setFill(const SkSVGPaint& svgPaint) {
     fPresentationAttributes.fFill.set(svgPaint);
 }
 
 void SkSVGNode::setFillOpacity(const SkSVGNumberType& opacity) {
     fPresentationAttributes.fFillOpacity.set(
         SkSVGNumberType(SkTPin<SkScalar>(opacity.value(), 0, 1)));
 }
 
+void SkSVGNode::setOpacity(const SkSVGNumberType& opacity) {
+    fPresentationAttributes.fOpacity.set(
+        SkSVGNumberType(SkTPin<SkScalar>(opacity.value(), 0, 1)));
+}
+
 void SkSVGNode::setStroke(const SkSVGPaint& svgPaint) {
     fPresentationAttributes.fStroke.set(svgPaint);
 }
 
 void SkSVGNode::setStrokeOpacity(const SkSVGNumberType& opacity) {
     fPresentationAttributes.fStrokeOpacity.set(
         SkSVGNumberType(SkTPin<SkScalar>(opacity.value(), 0, 1)));
 }
 
 void SkSVGNode::setStrokeWidth(const SkSVGLength& strokeWidth) {
     fPresentationAttributes.fStrokeWidth.set(strokeWidth);
 }
 
 void SkSVGNode::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) {
     switch (attr) {
     case SkSVGAttribute::kFill:
         if (const SkSVGPaintValue* paint = v.as<SkSVGPaintValue>()) {
             this->setFill(*paint);
         }
         break;
     case SkSVGAttribute::kFillOpacity:
         if (const SkSVGNumberValue* opacity = v.as<SkSVGNumberValue>()) {
             this->setFillOpacity(*opacity);
         }
         break;
+    case SkSVGAttribute::kOpacity:
+        if (const SkSVGNumberValue* opacity = v.as<SkSVGNumberValue>()) {
+            this->setOpacity(*opacity);
+        }
+        break;
     case SkSVGAttribute::kStroke:
         if (const SkSVGPaintValue* paint = v.as<SkSVGPaintValue>()) {
             this->setStroke(*paint);
         }
         break;
     case SkSVGAttribute::kStrokeOpacity:
         if (const SkSVGNumberValue* opacity = v.as<SkSVGNumberValue>()) {
             this->setStrokeOpacity(*opacity);
         }
         break;
@@ skipping 10 matching lines @@
     case SkSVGAttribute::kStrokeWidth:
         if (const SkSVGLengthValue* strokeWidth = v.as<SkSVGLengthValue>()) {
             this->setStrokeWidth(*strokeWidth);
         }
         break;
     default:
         SkDebugf("attribute ID <%d> ignored for node <%d>\n", attr, fTag);
         break;
     }
 }