Ziele Untersuchung
mit Columbo Integrität von
Datenbanken Interaktion und
Portierbarkeit Ergonomie der
Schnittstellen

Angebot Produkte Projekt Beratung

Mittel Analytik Modellierung Sprachen Algebra Logik Hardware Denken Kreativität

Zusammenhänge Gesellschaft Wirtschaft Branche Firma


products/sources/formale Sprachen/C/Firefox/dom/vr/ (Browser von der Mozilla Stiftung Version 136.0.1^©) Datei vom 10.2.2025 mit Größe 5 kB

Quelle XRInputSourceArray.cpp Sprache: C

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/dom/XRInputSourceArray.h"
#include "mozilla/dom/XRSession.h"
#include "mozilla/dom/XRInputSourcesChangeEvent.h"
#include "VRDisplayClient.h"

namespace mozilla::dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(XRInputSourceArray, mParent,
                                      mInputSources)
NS_IMPL_CYCLE_COLLECTING_ADDREF(XRInputSourceArray)
NS_IMPL_CYCLE_COLLECTING_RELEASE(XRInputSourceArray)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(XRInputSourceArray)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

XRInputSourceArray::XRInputSourceArray(nsISupports* aParent)
    : mParent(aParent) {}

JSObject* XRInputSourceArray::WrapObject(JSContext* aCx,
                                         JS::Handle<JSObject*> aGivenProto) {
  return XRInputSourceArray_Binding::Wrap(aCx, this, aGivenProto);
}

void XRInputSourceArray::Update(XRSession* aSession) {
  MOZ_ASSERT(aSession);

  gfx::VRDisplayClient* displayClient = aSession->GetDisplayClient();
  if (!displayClient) {
    return;
  }

  XRInputSourcesChangeEventInit addInit;
  nsTArray<RefPtr<XRInputSource>> removedInputs;
  if (NS_WARN_IF(!addInit.mAdded.SetCapacity(gfx::kVRControllerMaxCount,
                                             mozilla::fallible))) {
    MOZ_ASSERT(false,
               "'add' sequence in XRInputSourcesChangeEventInit SetCapacity() "
               "failed.");
    return;
  }

  for (int32_t i = 0; i < gfx::kVRControllerMaxCount; ++i) {
    const gfx::VRControllerState& controllerState =
        displayClient->GetDisplayInfo().mControllerState[i];
    if (controllerState.controllerName[0] == '\0') {
      // Checking if exising controllers need to be removed.
      for (auto& input : mInputSources) {
        if (input->GetIndex() == i) {
          removedInputs.AppendElement(input);
          break;
        }
      }
      continue;
    }

    bool found = false;
    RefPtr<XRInputSource> inputSource = nullptr;
    for (auto& input : mInputSources) {
      if (input->GetIndex() == i) {
        found = true;
        inputSource = input;
        break;
      }
    }
    // Checking if it is added before.
    if (!found &&
        (controllerState.numButtons > 0 || controllerState.numAxes > 0)) {
      inputSource = new XRInputSource(mParent);
      inputSource->Setup(aSession, i);
      mInputSources.AppendElement(inputSource);

      addInit.mBubbles = false;
      addInit.mCancelable = false;
      addInit.mSession = aSession;
      if (!addInit.mAdded.AppendElement(*inputSource, mozilla::fallible)) {
        MOZ_ASSERT(false,
                   "'add' sequence in XRInputSourcesChangeEventInit "
                   "AppendElement() failed, it might be due to the"
                   "wrong size when SetCapacity().");
      }
    }
    // If added, updating the current controller states.
    if (inputSource) {
      inputSource->Update(aSession);
    }
  }

  // Send `inputsourceschange` for new controllers.
  if (addInit.mAdded.Length()) {
    RefPtr<XRInputSourcesChangeEvent> event =
        XRInputSourcesChangeEvent::Constructor(
            aSession, u"inputsourceschange"_ns, addInit);

    event->SetTrusted(true);
    aSession->DispatchEvent(*event);
  }

  // If there's a controller is removed, dispatch `inputsourceschange`.
  if (removedInputs.Length()) {
    DispatchInputSourceRemovedEvent(removedInputs, aSession);
  }
  for (auto& input : removedInputs) {
    mInputSources.RemoveElement(input);
  }
}

void XRInputSourceArray::DispatchInputSourceRemovedEvent(
    const nsTArray<RefPtr<XRInputSource>>& aInputs, XRSession* aSession) {
  if (!aSession) {
    return;
  }

  XRInputSourcesChangeEventInit init;
  if (NS_WARN_IF(
          !init.mRemoved.SetCapacity(aInputs.Length(), mozilla::fallible))) {
    MOZ_ASSERT(false,
               "'removed' sequence in XRInputSourcesChangeEventInit "
               "SetCapacity() failed.");
    return;
  }
  for (const auto& input : aInputs) {
    input->SetGamepadIsConnected(false, aSession);
    init.mBubbles = false;
    init.mCancelable = false;
    init.mSession = aSession;
    if (!init.mRemoved.AppendElement(*input, mozilla::fallible)) {
      MOZ_ASSERT(false,
                 "'removed' sequence in XRInputSourcesChangeEventInit "
                 "AppendElement() failed, it might be due to the"
                 "wrong size when SetCapacity().");
    }
  }

  if (init.mRemoved.Length()) {
    RefPtr<XRInputSourcesChangeEvent> event =
        XRInputSourcesChangeEvent::Constructor(aSession,
                                               u"inputsourceschange"_ns, init);

    event->SetTrusted(true);
    aSession->DispatchEvent(*event);
  }
}

void XRInputSourceArray::Clear(XRSession* aSession) {
  DispatchInputSourceRemovedEvent(mInputSources, aSession);
  mInputSources.Clear();
}

uint32_t XRInputSourceArray::Length() { return mInputSources.Length(); }

XRInputSource* XRInputSourceArray::IndexedGetter(uint32_t aIndex,
                                                 bool& aFound) {
  aFound = aIndex < mInputSources.Length();
  if (!aFound) {
    return nullptr;
  }
  return mInputSources[aIndex];
}

}  // namespace mozilla::dom

quality84%

¤ Dauer der Verarbeitung: 0.16 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.