201 lines
7.6 KiB
C++
201 lines
7.6 KiB
C++
/*************************************************************************
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*
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* $RCSfile: transparencygroupaction.hxx,v $
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*
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* $Revision: 1.2 $
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*
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* last change: $Author: rt $ $Date: 2004-11-26 20:57:42 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#ifndef _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX
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#define _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX
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#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_
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#include <com/sun/star/uno/Reference.hxx>
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#endif
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#ifndef _DRAFTS_COM_SUN_STAR_RENDERING_RENDERSTATE_HPP__
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#include <drafts/com/sun/star/rendering/RenderState.hpp>
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#endif
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#include <cppcanvas/canvas.hxx>
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#include <cppcanvas/renderer.hxx>
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#include <action.hxx>
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#include <memory> // auto_ptr
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class Point;
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class Size;
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class GDIMetaFile;
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class Gradient;
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namespace drafts { namespace com { namespace sun { namespace star { namespace rendering
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{
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class XBitmap;
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} } } } }
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/* Definition of internal::BitmapAction class */
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namespace cppcanvas
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{
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namespace internal
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{
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struct OutDevState;
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typedef ::std::auto_ptr< GDIMetaFile > MtfAutoPtr;
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typedef ::std::auto_ptr< Gradient > GradientAutoPtr;
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/** Transparency group action.
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This action groups a bunch of other actions, to be
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rendered with the given transparency setting against the
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background.
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Encapsulated converter between GDIMetaFile and
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XCanvas. The Canvas argument is deliberately placed at the
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constructor, to force reconstruction of this object for a
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new canvas. This considerably eases internal state
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handling, since a lot of the internal state
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(e.g. deviceColor) is Canvas-dependent.
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*/
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class TransparencyGroupAction : public Action
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{
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public:
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/** Create new transparency group action.
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@param rGroupMtf
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Metafile that groups all actions to be rendered
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transparent
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@param rParms
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Render parameters
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@param rDstPoint
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Left, top edge of destination, in current state
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coordinate system
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@param rDstSize
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Size of the transparency group object, in current
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state coordinate system.
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@param nAlpha
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Alpha value, must be in the range [0,1]
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*/
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TransparencyGroupAction( MtfAutoPtr& rGroupMtf,
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const Renderer::Parameters& rParms,
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const ::Point& rDstPoint,
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const ::Size& rDstSize,
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double nAlpha,
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const CanvasSharedPtr& rCanvas,
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const OutDevState& rState );
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/** Create new transparency group action.
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@param rGroupMtf
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Metafile that groups all actions to be rendered
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transparent.
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@param rAlphaGradient
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VCL gradient, to be rendered into the action's alpha
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channel.
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@param rParms
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Render parameters
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@param rDstPoint
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Left, top edge of destination, in current state
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coordinate system
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@param rDstSize
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Size of the transparency group object, in current
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state coordinate system.
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*/
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TransparencyGroupAction( MtfAutoPtr& rGroupMtf,
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GradientAutoPtr& rAlphaGradient,
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const Renderer::Parameters& rParms,
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const ::Point& rDstPoint,
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const ::Size& rDstSize,
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const CanvasSharedPtr& rCanvas,
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const OutDevState& rState );
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virtual ~TransparencyGroupAction();
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virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const;
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private:
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// default: disabled copy/assignment
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TransparencyGroupAction(const TransparencyGroupAction&);
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TransparencyGroupAction& operator = ( const TransparencyGroupAction& );
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MtfAutoPtr mpGroupMtf;
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GradientAutoPtr mpAlphaGradient;
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const Renderer::Parameters maParms;
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const ::Size maDstSize;
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mutable ::com::sun::star::uno::Reference<
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::drafts::com::sun::star::rendering::XBitmap > mxBufferBitmap; // contains last rendered version
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mutable ::basegfx::B2DHomMatrix maLastTransformation; // contains active
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// transformation for
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// mxBufferBitmap content
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CanvasSharedPtr mpCanvas;
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::drafts::com::sun::star::rendering::RenderState maState;
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const double mnAlpha;
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};
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}
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}
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#endif /*_CPPCANVAS_TRANSPARENCYGROUPACTION_HXX */
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