Add SkSVGCanvas

src/svg/SkSVGDevice.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkSVGDevice.h"
 
 #include "SkBitmap.h"
@@ skipping 453 matching lines @@
     tface->getFamilyName(&familyName);
     if (!familyName.isEmpty()) {
         this->addAttribute("font-family", familyName);
     }
 
     if (const char* textAlign = svg_text_align(paint.getTextAlign())) {
         this->addAttribute("text-anchor", textAlign);
     }
 }
 
-SkBaseDevice* SkSVGDevice::Create(const SkISize& size, SkWStream* wstream) {
-    if (!SkToBool(wstream)) {
+SkBaseDevice* SkSVGDevice::Create(const SkISize& size, SkXMLWriter* writer) {
+    if (!writer) {
         return NULL;
     }
 
-    return SkNEW_ARGS(SkSVGDevice, (size, wstream));
+    return SkNEW_ARGS(SkSVGDevice, (size, writer));
 }
 
-SkSVGDevice::SkSVGDevice(const SkISize& size, SkWStream* wstream)
-    : fWriter(SkNEW_ARGS(SkXMLStreamWriter, (wstream)))
+SkSVGDevice::SkSVGDevice(const SkISize& size, SkXMLWriter* writer)
+    : fWriter(writer)
     , fResourceBucket(SkNEW(ResourceBucket)) {
+    SkASSERT(writer);
 
     fLegacyBitmap.setInfo(SkImageInfo::MakeUnknown(size.width(), size.height()));
 
     fWriter->writeHeader();
 
     // The root <svg> tag gets closed by the destructor.
     fRootElement.reset(SkNEW_ARGS(AutoElement, ("svg", fWriter)));
 
     fRootElement->addAttribute("xmlns", "http://www.w3.org/2000/svg");
     fRootElement->addAttribute("xmlns:xlink", "http://www.w3.org/1999/xlink");
@@ skipping 146 matching lines @@
                                const SkPaint& paint) {
     // todo
     SkDebugf("unsupported operation: drawVertices()\n");
 }
 
 void SkSVGDevice::drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
                              const SkPaint&) {
     // todo
     SkDebugf("unsupported operation: drawDevice()\n");
 }