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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef __com_sun_star_drawing_XSlidePreviewCache_idl__
#define __com_sun_star_drawing_XSlidePreviewCache_idl__
#include <com/sun/star/container/XIndexAccess.idl>
#include <com/sun/star/geometry/IntegerSize2D.idl>
#include <com/sun/star/lang/IllegalArgumentException.idl>
#include <com/sun/star/rendering/XBitmap.idl>
#include <com/sun/star/rendering/XCanvas.idl>
#include <com/sun/star/drawing/XSlidePreviewCacheListener.idl>
module com { module sun { module star { module drawing {
/** A cache of preview bitmaps for the slides of one Impress or Draw
document in one size. There may be more than one cache for one
document. These are internally connected and for missing previews one
cache may take it from another cache and scale it to the desired size.
When a preview is not present then it is created asynchronously. On
creation all registered listeners are notified.
Slides are referenced via their index in an XIndexAccess container in
order to allow multiple references to a single slide (custom
presentations).
*/
interface XSlidePreviewCache
{
/** Set the set of slides for which the cache will provide the
previews. All slides in the given XIndexAccess are required to come
from the given model.
@param xSlides
The set of slides for which the called cache will provide the
previews. This container defines the indices that are used to
look up slides.
@param xDocument
The model that contains the slides reference by the xSlides argument.
*/
void setDocumentSlides (
[in] ::com::sun::star::container::XIndexAccess xSlides,
[in] ::com::sun::star::uno::XInterface xDocument);
/** Define which slides are currently visible on the screen and which
are not. This information is used for give preview creation for
visible slides a higher priority than for those slides that are not
visible.
*/
void setVisibleRange ([in] long nFirstVisibleSlideIndex, [in] long nLastVisibleSlideIndex);
/** Define the size of the previews that are managed by the called
cache.
*/
void setPreviewSize ([in] ::com::sun::star::geometry::IntegerSize2D aSize);
/** Return a preview for the given slide index.
The returned bitmap may be the requested preview, a preview of the
preview, i.e. a scaled up or down version, or an empty reference
when the preview is not yet present.
This call may lead to the asynchronous creation of the requested
preview. In that case all registered listeners are notified when
the preview has been created.
*/
::com::sun::star::rendering::XBitmap getSlidePreview (
[in] long nSlideIndex,
[in] ::com::sun::star::rendering::XCanvas xCanvas)
raises(::com::sun::star::lang::IllegalArgumentException);
/** Register a listener that is called when a preview has been created
asynchronously.
*/
void addPreviewCreationNotifyListener ([in] XSlidePreviewCacheListener xListener);
/** Remove a previously registered listener for preview creations.
*/
void removePreviewCreationNotifyListener ([in] XSlidePreviewCacheListener xListener);
/** Stop the asynchronous creation of previews temporarily.
Call resume() to restart it.
*/
void pause ();
/** Resume the asynchronous creation of slide previews.
*/
void resume ();
};
}; }; }; }; // ::com::sun::star::drawing
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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