Revert "Revert of Add getReducedClipStack to lua canvas (https://codereview.chromium.org/180283004/…

src/core/SkCanvas.cpp

 
 /*
  * Copyright 2008 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkCanvas.h"
@@ skipping 565 matching lines @@
 
 ///////////////////////////////////////////////////////////////////////////////
 
 void SkCanvas::flush() {
     SkBaseDevice* device = this->getDevice();
     if (device) {
         device->flush();
     }
 }
 
-SkISize SkCanvas::getDeviceSize() const {
+SkISize SkCanvas::getTopLayerSize() const {
+    SkBaseDevice* d = this->getTopDevice();
+    return d ? SkISize::Make(d->width(), d->height()) : SkISize::Make(0, 0);
+}
+
+SkIPoint SkCanvas::getTopLayerOrigin() const {
+    SkBaseDevice* d = this->getTopDevice();
+    return d ? d->getOrigin() : SkIPoint::Make(0, 0);
+}
+
+SkISize SkCanvas::getBaseLayerSize() const {
     SkBaseDevice* d = this->getDevice();
     return d ? SkISize::Make(d->width(), d->height()) : SkISize::Make(0, 0);
 }
 
 SkBaseDevice* SkCanvas::getDevice() const {
     // return root device
     MCRec* rec = (MCRec*) fMCStack.front();
     SkASSERT(rec && rec->fLayer);
     return rec->fLayer->fDevice;
 }
@@ skipping 1691 matching lines @@
     return *paint;
 }
 
 const SkRegion& SkCanvas::LayerIter::clip() const { return fImpl->getClip(); }
 int SkCanvas::LayerIter::x() const { return fImpl->getX(); }
 int SkCanvas::LayerIter::y() const { return fImpl->getY(); }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 SkCanvas::ClipVisitor::~ClipVisitor() { }