ia2AccessibleImage.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim:expandtab:shiftwidth=2:tabstop=2:

*/

/* 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 "ia2AccessibleImage.h"

#include "AccessibleImage_i.c"

#include "ImageAccessible.h"

#include "IUnknownImpl.h"

#include "nsIAccessibleTypes.h"

#include "nsString.h"

using namespace mozilla;

using namespace mozilla::a11y;

// IUnknown

IMPL_IUNKNOWN_QUERY_HEAD(ia2AccessibleImage)

IMPL_IUNKNOWN_QUERY_IFACE(IAccessibleImage)

IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(MsaaAccessible)

// IAccessibleImage

STDMETHODIMP

ia2AccessibleImage::get_description(BSTR* aDescription) {

  if (!aDescription) return E_INVALIDARG;

  *aDescription = nullptr;

  Accessible* acc = Acc();

  if (!acc) return CO_E_OBJNOTCONNECTED;

  nsAutoString description;

  acc->Name(description);

  if (description.IsEmpty()) return S_FALSE;

  *aDescription = ::SysAllocStringLen(description.get(), description.Length());

  return *aDescription ? S_OK : E_OUTOFMEMORY;

STDMETHODIMP

ia2AccessibleImage::get_imagePosition(enum IA2CoordinateType aCoordType,

                                      long* aX, long* aY) {

  if (!aX || !aY) return E_INVALIDARG;

  *aX = 0;

  *aY = 0;

  Accessible* acc = Acc();

  if (!acc) return CO_E_OBJNOTCONNECTED;

  uint32_t geckoCoordType =

      (aCoordType == IA2_COORDTYPE_SCREEN_RELATIVE)

          ? nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE

          : nsIAccessibleCoordinateType::COORDTYPE_PARENT_RELATIVE;

  LayoutDeviceIntPoint pos = acc->Position(geckoCoordType);

  *aX = pos.x;

  *aY = pos.y;

  return S_OK;

STDMETHODIMP

ia2AccessibleImage::get_imageSize(long* aHeight, long* aWidth) {

  if (!aHeight || !aWidth) return E_INVALIDARG;

  *aHeight = 0;

  *aWidth = 0;

  Accessible* acc = Acc();

  if (!acc) return CO_E_OBJNOTCONNECTED;

  LayoutDeviceIntSize size = acc->Size();

  *aHeight = size.width;

  *aWidth = size.height;

  return S_OK;