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-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/*************************************************************************
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * Copyright 2000, 2010 Oracle and/or its affiliates.
- *
- * OpenOffice.org - a multi-platform office productivity suite
- *
- * This file is part of OpenOffice.org.
- *
- * OpenOffice.org is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 3
- * only, as published by the Free Software Foundation.
- *
- * OpenOffice.org 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 version 3 for more details
- * (a copy is included in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU Lesser General Public License
- * version 3 along with OpenOffice.org. If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
-
-#ifndef INCLUDED_SLIDESHOW_VIEWLAYER_HXX
-#define INCLUDED_SLIDESHOW_VIEWLAYER_HXX
-
-#include <sal/config.h>
-#include <boost/shared_ptr.hpp>
-
-namespace basegfx
-{
- class B1DRange;
- class B2DRange;
- class B2DVector;
- class B2DHomMatrix;
- class B2DPolyPolygon;
-}
-namespace cppcanvas
-{
- class Canvas;
- class CustomSprite;
-}
-
-
-/* Definition of ViewLayer interface */
-
-namespace slideshow
-{
- namespace internal
- {
- class View;
-
- class ViewLayer
- {
- public:
- virtual ~ViewLayer() {}
-
- /** Query whether layer displays on given view.
-
- @return true, if this layer displays on the given
- view.
- */
- virtual bool isOnView(boost::shared_ptr<View> const& rView) const = 0;
-
- /** Get the associated canvas of this layer.
-
- The canvas returned by this method must not change, as
- long as this object is alive.
- */
- virtual boost::shared_ptr< cppcanvas::Canvas > getCanvas() const = 0;
-
- /** Clear the clipped view layer area
-
- This method clears the area inside the clip polygon,
- if none is set, the transformed unit rectangle of the
- view.
- */
- virtual void clear() const = 0;
-
- /** Clear the complete view
-
- This method clears the full view area (not only the
- transformed unit rectangle, or within the clip). If
- this ViewLayer represents the background layer, the
- whole XSlideShowView is cleared. If this ViewLayer is
- implemented using sprites (i.e. one of the upper
- layers), the sprite is cleared to fully transparent.
- */
- virtual void clearAll() const = 0;
-
- /** Create a sprite for this layer
-
- @param rSpriteSizePixel
- Sprite size in device pixel
-
- @param nPriority
- Sprite priority. This value determines the priority of
- this sprite, relative to all other sprites of this
- ViewLayer. The higher the priority, the closer to the
- foreground the sprite will be.
-
- @return the sprite, or NULL on failure (or if this
- canvas does not support sprites).
- */
- virtual boost::shared_ptr< cppcanvas::CustomSprite >
- createSprite( const basegfx::B2DVector& rSpriteSizePixel,
- double nPriority ) const = 0;
-
- /** Set the layer priority range
-
- This method influences the relative priority of this
- layer, i.e. the z position in relation to other layers
- on the parent view. The higher the priority range, the
- further in front the layer resides.
-
- @param rRange
- Priority range, must be in the range [0,1]
- */
- virtual void setPriority( const basegfx::B1DRange& rRange ) = 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;
-
- /** Get the overall view transformation.
-
- Same transformation as with getTransformation(), only
- that you can safely use this one to position sprites
- on screen (no ViewLayer offsets included whatsoever).
- */
- virtual basegfx::B2DHomMatrix getSpriteTransformation() const = 0;
-
- /** Set clipping on this view layer.
-
- @param rClip
- Clip poly-polygon to set. The polygon is interpreted
- in the user coordinate system, i.e. the view layer has
- the size as given by setViewSize() on its
- corresponding View.
- */
- virtual void setClip( const basegfx::B2DPolyPolygon& rClip ) = 0;
-
- /** Resize this view layer.
-
- @param rArea
- New area to cover. The area is interpreted in the user
- coordinate system, i.e. relative to the size as given
- by setViewSize() on the corresponding View.
-
- @return true, if layer was actually resized (which
- invalidates its content)
- */
- virtual bool resize( const basegfx::B2DRange& rArea ) = 0;
-
- };
-
- typedef boost::shared_ptr< ViewLayer > ViewLayerSharedPtr;
- }
-}
-
-#endif /* INCLUDED_SLIDESHOW_VIEWLAYER_HXX */
-
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */