[SVGDom] Add rx/ry support for <rect>

experimental/svg/model/SkSVGRect.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 "SkRect.h"
 #include "SkSVGRect.h"
@@ skipping 11 matching lines @@
 }
 
 void SkSVGRect::setWidth(const SkSVGLength& w) {
     fWidth = w;
 }
 
 void SkSVGRect::setHeight(const SkSVGLength& h) {
     fHeight = h;
 }
 
+void SkSVGRect::setRx(const SkSVGLength& rx) {
+    fRx = rx;
+}
+
+void SkSVGRect::setRy(const SkSVGLength& ry) {
+    fRy = ry;
+}
+
 void SkSVGRect::onSetAttribute(SkSVGAttribute attr, const SkSVGValue& v) {
     switch (attr) {
     case SkSVGAttribute::kX:
         if (const auto* x = v.as<SkSVGLengthValue>()) {
             this->setX(*x);
         }
         break;
     case SkSVGAttribute::kY:
         if (const auto* y = v.as<SkSVGLengthValue>()) {
             this->setY(*y);
         }
         break;
     case SkSVGAttribute::kWidth:
         if (const auto* w = v.as<SkSVGLengthValue>()) {
             this->setWidth(*w);
         }
         break;
     case SkSVGAttribute::kHeight:
         if (const auto* h = v.as<SkSVGLengthValue>()) {
             this->setHeight(*h);
         }
         break;
+    case SkSVGAttribute::kRx:
+        if (const auto* rx = v.as<SkSVGLengthValue>()) {
+            this->setRx(*rx);
+        }
+        break;
+    case SkSVGAttribute::kRy:
+        if (const auto* ry = v.as<SkSVGLengthValue>()) {
+            this->setRy(*ry);
+        }
+        break;
     default:
         this->INHERITED::onSetAttribute(attr, v);
     }
 }
 
 void SkSVGRect::onDraw(SkCanvas* canvas, const SkSVGLengthContext& lctx,
                        const SkPaint& paint) const {
-    canvas->drawRect(lctx.resolveRect(fX, fY, fWidth, fHeight), paint);
+    const SkRect rect = lctx.resolveRect(fX, fY, fWidth, fHeight);
+    const SkScalar rx = lctx.resolve(fRx, SkSVGLengthContext::LengthType::kHorizontal);
+    const SkScalar ry = lctx.resolve(fRy, SkSVGLengthContext::LengthType::kVertical);
+
+    if (rx || ry) {
+        canvas->drawRRect(SkRRect::MakeRectXY(rect, rx, ry), paint);
+    } else {
+        canvas->drawRect(rect, paint);
+    }
 }