146 lines
5.7 KiB
C++
146 lines
5.7 KiB
C++
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: transparencygroupaction.hxx,v $
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*
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* $Revision: 1.5 $
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*
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* last change: $Author: rt $ $Date: 2005-09-08 08:23:12 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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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 2005 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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#ifndef _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX
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#define _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX
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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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/* Definition of internal::TransparencyGroupActionFactory 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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Creates encapsulated converters 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 (e.g. fonts,
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text layout) is Canvas-dependent.
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*/
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class TransparencyGroupActionFactory
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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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static ActionSharedPtr createTransparencyGroupAction( 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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static ActionSharedPtr createTransparencyGroupAction( 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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private:
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// static factory, disable big four
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TransparencyGroupActionFactory();
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~TransparencyGroupActionFactory();
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TransparencyGroupActionFactory(const TransparencyGroupActionFactory&);
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TransparencyGroupActionFactory& operator=( const TransparencyGroupActionFactory& );
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};
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}
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}
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#endif /*_CPPCANVAS_TRANSPARENCYGROUPACTION_HXX */
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