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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: alphaprimitive2d.hxx,v $
*
* $Revision: 1.3 $
*
* last change: $Author: aw $ $Date: 2008-05-27 14:11:16 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* 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.
*
* 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 02111-1307 USA
*
************************************************************************/
#ifndef INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSPARENCEPRIMITIVE2D_HXX
#define INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSPARENCEPRIMITIVE2D_HXX
#include <drawinglayer/primitive2d/groupprimitive2d.hxx>
//////////////////////////////////////////////////////////////////////////////
namespace drawinglayer
{
namespace primitive2d
{
/** TransparencePrimitive2D class
This is the basic primitive for applying freely defined transparence
to freely defined content. The basic idea is to associate a content
which is defined as a sequence of primitives and hold as child content
in the GroupPrimitive2D with a transparence channel also defined as a sequence
of primitives and hold in the transparence member.
The basic definition is to use the transparence content as transparence-Mask by
interpreting the transparence-content not as RGB, but as Luminance transparence mask
using the common RGB_to_luminance definition as e.g. used by VCL.
The defining geometry is the Range of the child primitive sequence,
this means the renderers will/shall use this geometric information for
rendering, not the transparent one. The transparent one should/will be clipped
accordingly.
*/
class TransparencePrimitive2D : public GroupPrimitive2D
{
private:
/// The transparence-Mask who's RGB-Values are interpreted as Luminance
Primitive2DSequence maTransparence;
public:
/** constructor
@param rChildren
The content which is defined to have a transparency. The
range of this primitive is defined by this content
@param rTransparence
The definition of the Transparence-channel for this primitive. It
will be interpreted as mask by interpreting as gray values
using the common RGB_to_luminance definitions
*/
TransparencePrimitive2D(
const Primitive2DSequence& rChildren,
const Primitive2DSequence& rTransparence);
/// data read access
const Primitive2DSequence& getTransparence() const { return maTransparence; }
/// compare operator
virtual bool operator==(const BasePrimitive2D& rPrimitive) const;
/// provide unique ID
DeclPrimitrive2DIDBlock()
};
} // end of namespace primitive2d
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
#endif //INCLUDED_DRAWINGLAYER_PRIMITIVE2D_TRANSPARENCEPRIMITIVE2D_HXX
//////////////////////////////////////////////////////////////////////////////
// eof
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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