dom/base/Pose.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "js/experimental/TypedData.h"  // JS_GetFloat32ArrayData
   8 #include "mozilla/ErrorResult.h"
   9 #include "mozilla/HoldDropJSObjects.h"
  10 #include "mozilla/dom/TypedArray.h"
  11 #include "mozilla/dom/Pose.h"
  12
  13 namespace mozilla::dom {
  14
  15 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WITH_JS_MEMBERS(
  16     Pose, (mParent),
  17     (mPosition, mLinearVelocity, mLinearAcceleration, mOrientation,
  18      mAngularVelocity, mAngularAcceleration))
  19
  20 Pose::Pose(nsISupports* aParent)
  21     : mParent(aParent),
  22       mPosition(nullptr),
  23       mLinearVelocity(nullptr),
  24       mLinearAcceleration(nullptr),
  25       mOrientation(nullptr),
  26       mAngularVelocity(nullptr),
  27       mAngularAcceleration(nullptr) {
  28   mozilla::HoldJSObjects(this);
  29 }
  30
  31 Pose::~Pose() { mozilla::DropJSObjects(this); }
  32
  33 nsISupports* Pose::GetParentObject() const { return mParent; }
  34
  35 void Pose::SetFloat32Array(JSContext* aJSContext, nsWrapperCache* creator,
  36                            JS::MutableHandle<JSObject*> aRetVal,
  37                            JS::Heap<JSObject*>& aObj, float* aVal,
  38                            uint32_t aValLength, ErrorResult& aRv) {
  39   if (!aVal) {
  40     aRetVal.set(nullptr);
  41     return;
  42   }
  43
  44   if (!aObj) {
  45     aObj = Float32Array::Create(aJSContext, creator, aValLength, aVal);
  46     if (!aObj) {
  47       aRv.NoteJSContextException(aJSContext);
  48       return;
  49     }
  50   } else {
  51     JS::AutoCheckCannotGC nogc;
  52     bool isShared = false;
  53     JS::Rooted<JSObject*> obj(aJSContext, aObj.get());
  54     float* data = JS_GetFloat32ArrayData(obj, &isShared, nogc);
  55     if (data) {
  56       memcpy(data, aVal, aValLength * sizeof(float));
  57     }
  58   }
  59
  60   aRetVal.set(aObj);
  61 }
  62
  63 }  // namespace mozilla::dom