gecko/other-licenses/ia2/AccessibleComponent.idl

/*************************************************************************
 *
 *  File Name (AccessibleComponent.idl)
 *
 *  IAccessible2 IDL Specification
 *
 *  Copyright (c) IBM Corp. 2006
 *  Copyright (c) Sun Microsystems, Inc. 2000, 2006
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA
 *
 ************************************************************************/

import "objidl.idl";
import "oaidl.idl";
import "oleacc.idl";
import "Accessible2.idl";

typedef long IA2Color;

/// A structure containing an x and y value.
typedef struct {
  long x;  ///< x coordinate
  long y;  ///< y corrdinate
} IA2Point;

/** @brief This interface is implemented by any object that can be rendered 
 on the screen.

 This interface provides the standard mechanism for an assistive technology
  to retrieve information concerning the graphical representation of an object. 
  Coordinates used by the functions of this interface are specified in
  different coordinate systems.  Their scale is the same and is equal to
  that of the screen coordiante system.  In other words all coordinates
  are measured in pixels.  They differ in their respective origin:
  <ul>
   <li>The screen coordinate system has its origin in the upper left
    corner of the current screen.</li>
   <li>The origin of the parent coordinate system is the upper left corner
    of the parent's bounding box.  With no parent the screen coordinate
    system is used instead.</li>
  </ul>
*/
[object, uuid(1546D4B0-4C98-4bda-89AE-9A64748BDDE4)]
interface IAccessibleComponent : IUnknown
{

  /** @brief Returns the location of the upper left corner of the object's
    bounding box relative to the parent.
	
	The coordinates of the bounding box are given relative to the parent's 
	coordinate system. The coordinates of the returned position are relative 
	to this object's parent or relative to the screen on which this object
    is rendered if it has no parent. If the object is not on any screen
    the returned position is (0,0).
   
   @param [out] locationInParent
  */
  [propget] HRESULT locationInParent
    (
     [out, retval] IA2Point *locationInParent
    );

  /** @brief Returns the foreground color of this object.
   @param [out] foreground
    The returned color is the foreground color of this object or, if
    that is not supported, the default foreground color.
  */ 
  [propget] HRESULT foreground
    (
     [out, retval] IA2Color *foreground
    );

   /** @brief Returns the background color of this object.
    @param [out] background
     The returned color is the background color of this object or, if
     that is not supported, the default background color.
   */ 
  [propget] HRESULT background
    (
     [out, retval] IA2Color *background
    );
}