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/*************************************************************************
*
* $RCSfile: action.hxx,v $
*
* $Revision: 1.6 $
*
* last change: $Author: obo $ $Date: 2005-04-18 09:58:09 $
*
* 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_ACTION_HXX
#define _CPPCANVAS_ACTION_HXX
#ifndef _SAL_TYPES_H_
#include <sal/types.h>
#endif
#ifndef BOOST_SHARED_PTR_HPP_INCLUDED
#include <boost/shared_ptr.hpp>
#endif
namespace basegfx
{
class B2DHomMatrix;
class B2DRange;
}
/* Definition of Action interface */
namespace cppcanvas
{
namespace internal
{
/** Interface for internal render actions
This interface is implemented by all objects generated
from the metafile renderer, and corresponds roughly to the
VCL meta action.
*/
class Action
{
public:
/** Used for rendering action subsets
There are several cases where an Action might have
subsettable content, e.g. text, or referenced
metafiles, like the transparent action.
Generally, at the metafile renderer, all actions are
'flattened' out, i.e. a meta action rendering the
string "Hello" counts five indices, and a transparent
action containing a metafile with 100 actions counts
at least 100 indices (contained transparency or text
actions recursively add to this value). From the
outside, the subset to render is referenced via this
flat index range
*/
struct Subset
{
/** Denotes start of the subset.
The index given here specifies the first subaction
to render.
*/
sal_Int32 mnSubsetBegin;
/** Denotes end of the subset
The index given here specifies the first subaction
<em>not<em> to render, i.e. one action behind the
subset to be rendered
*/
sal_Int32 mnSubsetEnd;
};
virtual ~Action() {}
/** Render this action to the associated canvas
@param rTransformation
Transformation matrix to apply before rendering
@return true, if rendering was successful. If
rendering failed, false is returned.
*/
virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation ) const = 0;
/** Render the given part of the action to the associated
canvas.
@param rTransformation
Transformation matrix to apply before rendering
@param rSubset
Subset of the action to render. See Subset description
for index semantics.
@return true, if rendering was successful. If the
specified subset is invalid for this action, or if
rendering failed for other reasons, false is returned.
*/
virtual bool render( const ::basegfx::B2DHomMatrix& rTransformation,
const Subset& rSubset ) const = 0;
/** Query bounds of this action on the associated canvas
@param rTransformation
Transformation matrix to apply
@return the bounds for this action in device
coordinate space.
*/
virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix& rTransformation ) const = 0;
/** Query bounds for the given part of the action on the
associated canvas.
@param rTransformation
Transformation matrix to apply.
@param rSubset
Subset of the action to query. See Subset description
for index semantics.
@return the bounds for the given subset in device
coordinate space.
*/
virtual ::basegfx::B2DRange getBounds( const ::basegfx::B2DHomMatrix& rTransformation,
const Subset& rSubset ) const = 0;
/** Query action count.
This method returns the number of subset actions
contained in this action. The render( Subset ) method
must accept subset ranges up to the value returned
here.
@return the number of subset actions
*/
virtual sal_Int32 getActionCount() const = 0;
};
typedef ::boost::shared_ptr< Action > ActionSharedPtr;
}
}
#endif /* _CPPCANVAS_ACTION_HXX */
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