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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: view.hxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: kz $ $Date: 2006-12-13 16:06:56 $
*
* 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 _SLIDESHOW_VIEW_HXX
#define _SLIDESHOW_VIEW_HXX
#include <com/sun/star/uno/Reference.hxx>
#include <cppcanvas/spritecanvas.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/vector/b2dsize.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
#include <boost/shared_ptr.hpp>
#include <vector>
#include <viewlayer.hxx>
namespace basegfx { class B2DRange; }
/* Definition of View interface */
namespace slideshow
{
namespace internal
{
class View : public ViewLayer
{
public:
/** Create a new view layer for this view
*/
virtual ViewLayerSharedPtr createViewLayer() const = 0;
/** Clear the view layer area
*/
virtual void clear() const = 0;
/** Query whether view content is still valid.
This method returns false, if the view content has
been destroyed until the last update. That might
happen e.g. during window resizes, or when volatile
bitmaps become reclaimed by the system. If this method
returns false, the slideshow must assume that the
whole view area needs a repaint. A call to clear()
sets the content to valid again.
*/
virtual bool isContentDestroyed() const = 0;
/** Update screen representation from backbuffer
*/
virtual bool updateScreen() const = 0;
/** Get the overall view transformation.
This method should <em>not</em> simply return the
underlying canvas' transformation, but rather provide
a layer above that. This enables clients of the
slideshow to set their own user space transformation
at the canvas, whilst the slideshow adds their
transformation on top of that. Concretely, this method
returns the user transform (implicitely calculated
from the setViewSize() method), combined with the view
transformation.
*/
virtual ::basegfx::B2DHomMatrix getTransformation() const = 0;
/** Set the size of the user view coordinate system.
This method sets the width and height of the view in
document coordinates (i.e. 'logical' coordinates). The
resulting transformation is then concatenated with the
underlying view transformation, returned by the
getTransformation() method.
*/
virtual void setViewSize( const ::basegfx::B2DSize& ) = 0;
/** Set clipping on this view.
@param rClip
Clip poly-polygon to set. The polygon is interpreted
in the user coordinate system, i.e. the view has the
size as given by setViewSize().
*/
virtual void setClip( const ::basegfx::B2DPolyPolygon& rClip ) = 0;
/** Change the view's mouse cursor.
@param nPointerShape
One of the ::com::sun::star::awt::SystemPointer
constant group members.
*/
virtual void setMouseCursor( sal_Int16 nPointerShape ) = 0;
};
typedef ::boost::shared_ptr< View > ViewSharedPtr;
typedef ::std::vector< ViewSharedPtr > ViewVector;
}
}
#endif /* _SLIDESHOW_VIEW_HXX */
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