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 GamepadTouch::GamepadTouch(nsISupports* aParent)
  21     : mParent(aParent), mPosition(nullptr), mSurfaceDimensions(nullptr) {
  22   mozilla::HoldJSObjects(this);
  23   mTouchState = GamepadTouchState();
  24 }
  25
  26 GamepadTouch::~GamepadTouch() { mozilla::DropJSObjects(this); }
  27
  28 /* virtual */ JSObject* GamepadTouch::WrapObject(
  29     JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
  30   return GamepadTouch_Binding::Wrap(aCx, this, aGivenProto);
  31 }
  32
  33 void GamepadTouch::GetPosition(JSContext* aCx,
  34                                JS::MutableHandle<JSObject*> aRetval,
  35                                ErrorResult& aRv) {
  36   mPosition = Float32Array::Create(aCx, this, mTouchState.position, aRv);
  37   if (aRv.Failed()) {
  38     return;
  39   }
  40
  41   aRetval.set(mPosition);
  42 }
  43
  44 void GamepadTouch::GetSurfaceDimensions(JSContext* aCx,
  45                                         JS::MutableHandle<JSObject*> aRetval,
  46                                         ErrorResult& aRv) {
  47   if (mTouchState.isSurfaceDimensionsValid) {
  48     mSurfaceDimensions =
  49         Uint32Array::Create(aCx, this, mTouchState.surfaceDimensions, aRv);
  50   } else {
  51     mSurfaceDimensions = Uint32Array::Create(
  52         aCx, this, std::size(mTouchState.surfaceDimensions), aRv);
  53   }
  54
  55   if (!mSurfaceDimensions) {
  56     aRv.NoteJSContextException(aCx);
  57     return;
  58   }
  59
  60   aRetval.set(mSurfaceDimensions);
  61 }
  62
  63 void GamepadTouch::SetTouchState(const GamepadTouchState& aTouch) {
  64   mTouchState = aTouch;
  65 }
  66
  67 void GamepadTouch::Set(const GamepadTouch* aOther) {
  68   MOZ_ASSERT(aOther);
  69   mTouchState = aOther->mTouchState;
  70 }
  71
  72 }  // namespace mozilla::dom