gecko/accessible/src/atk/nsMaiInterfaceImage.cpp

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is IBM Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Gao, Ming (gaoming@cn.ibm.com)
 *   Neo Liu(nian.liu@sun.com)
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#include "InterfaceInitFuncs.h"

#include "nsAccessibleWrap.h"
#include "nsHTMLImageAccessible.h"
#include "nsMai.h"

extern "C" {
const gchar* getDescriptionCB(AtkObject* aAtkObj);

static void
getImagePositionCB(AtkImage *aImage, gint *aAccX, gint *aAccY,
                   AtkCoordType aCoordType)
{
    nsAccessibleWrap *accWrap = GetAccessibleWrap(ATK_OBJECT(aImage));
    if (!accWrap || !accWrap->IsImageAccessible())
      return;

    nsHTMLImageAccessible* image = accWrap->AsImage();
    PRUint32 geckoCoordType = (aCoordType == ATK_XY_WINDOW) ?
      nsIAccessibleCoordinateType::COORDTYPE_WINDOW_RELATIVE :
      nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE;
    // Returned in screen coordinates
    image->GetImagePosition(geckoCoordType, aAccX, aAccY);
}

static const gchar*
getImageDescriptionCB(AtkImage *aImage)
{
   return getDescriptionCB(ATK_OBJECT(aImage));
}

static void
getImageSizeCB(AtkImage *aImage, gint *aAccWidth, gint *aAccHeight)
{
    nsAccessibleWrap *accWrap = GetAccessibleWrap(ATK_OBJECT(aImage));
    if (!accWrap || !accWrap->IsImageAccessible())
      return;

    accWrap->AsImage()->GetImageSize(aAccWidth, aAccHeight);
}
}

void
imageInterfaceInitCB(AtkImageIface* aIface)
{
  NS_ASSERTION(aIface, "no interface!");
  if (NS_UNLIKELY(!aIface))
    return;

  aIface->get_image_position = getImagePositionCB;
  aIface->get_image_description = getImageDescriptionCB;
  aIface->get_image_size = getImageSizeCB;
}