dom/gamepad/GamepadTouch.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 "mozilla/dom/GamepadTouch.h"
   8
   9 #include "mozilla/HoldDropJSObjects.h"
  10 #include "mozilla/dom/GamepadManager.h"
  11 #include "mozilla/dom/Promise.h"
  12 #include "mozilla/dom/TypedArray.h"
  13
  14 namespace mozilla::dom {
  15
  16 NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_WITH_JS_MEMBERS(GamepadTouch, (mParent),
  17                                                       (mPosition,
  18                                                        mSurfaceDimensions))
  19
  20 NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(GamepadTouch, AddRef)
  21 NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(GamepadTouch, Release)
  22
  23 GamepadTouch::GamepadTouch(nsISupports* aParent)
  24     : mParent(aParent), mPosition(nullptr), mSurfaceDimensions(nullptr) {
  25   mozilla::HoldJSObjects(this);
  26   mTouchState = GamepadTouchState();
  27 }
  28
  29 GamepadTouch::~GamepadTouch() { mozilla::DropJSObjects(this); }
  30
  31 /* virtual */ JSObject* GamepadTouch::WrapObject(
  32     JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  33   return GamepadTouch_Binding::Wrap(aCx, this, aGivenProto);
  34 }
  35
  36 void GamepadTouch::GetPosition(JSContext* aCx,
  37                                JS::MutableHandle<JSObject*> aRetval,
  38                                ErrorResult& aRv) {
  39   mPosition = Float32Array::Create(aCx, this, 2, mTouchState.position);
  40   if (!mPosition) {
  41     aRv.NoteJSContextException(aCx);
  42     return;
  43   }
  44
  45   aRetval.set(mPosition);
  46 }
  47
  48 void GamepadTouch::GetSurfaceDimensions(JSContext* aCx,
  49                                         JS::MutableHandle<JSObject*> aRetval,
  50                                         ErrorResult& aRv) {
  51   mSurfaceDimensions = Uint32Array::Create(aCx, this, 2,
  52                                            mTouchState.isSurfaceDimensionsValid
  53                                                ? mTouchState.surfaceDimensions
  54                                                : nullptr);
  55
  56   if (!mSurfaceDimensions) {
  57     aRv.NoteJSContextException(aCx);
  58     return;
  59   }
  60
  61   aRetval.set(mSurfaceDimensions);
  62 }
  63
  64 void GamepadTouch::SetTouchState(const GamepadTouchState& aTouch) {
  65   mTouchState = aTouch;
  66 }
  67
  68 void GamepadTouch::Set(const GamepadTouch* aOther) {
  69   MOZ_ASSERT(aOther);
  70   mTouchState = aOther->mTouchState;
  71 }
  72
  73 }  // namespace mozilla::dom