diff --git a/cppcanvas/source/mtfrenderer/transparencygroupaction.hxx b/cppcanvas/source/mtfrenderer/transparencygroupaction.hxx new file mode 100644 index 000000000000..67d7073ff8f0 --- /dev/null +++ b/cppcanvas/source/mtfrenderer/transparencygroupaction.hxx @@ -0,0 +1,200 @@ +/************************************************************************* + * + * $RCSfile: transparencygroupaction.hxx,v $ + * + * $Revision: 1.2 $ + * + * last change: $Author: rt $ $Date: 2004-11-26 20:57:42 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 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 + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (the "License"); You may not use this file + * except in compliance with the License. You may obtain a copy of the + * License at http://www.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#ifndef _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX +#define _CPPCANVAS_TRANSPARENCYGROUPACTION_HXX + +#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_ +#include +#endif + +#ifndef _DRAFTS_COM_SUN_STAR_RENDERING_RENDERSTATE_HPP__ +#include +#endif + +#include +#include +#include + +#include // auto_ptr + +class Point; +class Size; +class GDIMetaFile; +class Gradient; + +namespace drafts { namespace com { namespace sun { namespace star { namespace rendering +{ + class XBitmap; +} } } } } + +/* Definition of internal::BitmapAction class */ + +namespace cppcanvas +{ + namespace internal + { + struct OutDevState; + + typedef ::std::auto_ptr< GDIMetaFile > MtfAutoPtr; + typedef ::std::auto_ptr< Gradient > GradientAutoPtr; + + /** Transparency group action. + + This action groups a bunch of other actions, to be + rendered with the given transparency setting against the + background. + + Encapsulated converter between GDIMetaFile and + XCanvas. The Canvas argument is deliberately placed at the + constructor, to force reconstruction of this object for a + new canvas. This considerably eases internal state + handling, since a lot of the internal state + (e.g. deviceColor) is Canvas-dependent. + */ + class TransparencyGroupAction : public Action + { + public: + /** Create new transparency group action. + + @param rGroupMtf + Metafile that groups all actions to be rendered + transparent + + @param rParms + Render parameters + + @param rDstPoint + Left, top edge of destination, in current state + coordinate system + + @param rDstSize + Size of the transparency group object, in current + state coordinate system. + + @param nAlpha + Alpha value, must be in the range [0,1] + */ + TransparencyGroupAction( MtfAutoPtr& rGroupMtf, + const Renderer::Parameters& rParms, + const ::Point& rDstPoint, + const ::Size& rDstSize, + double nAlpha, + const CanvasSharedPtr& rCanvas, + const OutDevState& rState ); + + /** Create new transparency group action. + + @param rGroupMtf + Metafile that groups all actions to be rendered + transparent. + + @param rAlphaGradient + VCL gradient, to be rendered into the action's alpha + channel. + + @param rParms + Render parameters + + @param rDstPoint + Left, top edge of destination, in current state + coordinate system + + @param rDstSize + Size of the transparency group object, in current + state coordinate system. + */ + TransparencyGroupAction( MtfAutoPtr& rGroupMtf, + GradientAutoPtr& rAlphaGradient, + const Renderer::Parameters& rParms, + const ::Point& rDstPoint, + const ::Size& rDstSize, + const CanvasSharedPtr& rCanvas, + const OutDevState& rState ); + virtual ~TransparencyGroupAction(); + + virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const; + + private: + // default: disabled copy/assignment + TransparencyGroupAction(const TransparencyGroupAction&); + TransparencyGroupAction& operator = ( const TransparencyGroupAction& ); + + MtfAutoPtr mpGroupMtf; + GradientAutoPtr mpAlphaGradient; + + const Renderer::Parameters maParms; + + const ::Size maDstSize; + + mutable ::com::sun::star::uno::Reference< + ::drafts::com::sun::star::rendering::XBitmap > mxBufferBitmap; // contains last rendered version + mutable ::basegfx::B2DHomMatrix maLastTransformation; // contains active + // transformation for + // mxBufferBitmap content + CanvasSharedPtr mpCanvas; + ::drafts::com::sun::star::rendering::RenderState maState; + const double mnAlpha; + }; + } +} + +#endif /*_CPPCANVAS_TRANSPARENCYGROUPACTION_HXX */