File: SlideRenderer.hxx

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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 SD_PRESENTER_SLIDE_PREVIEW_HXX
#define SD_PRESENTER_SLIDE_PREVIEW_HXX

#include "PreviewRenderer.hxx"
#include <com/sun/star/drawing/XDrawPage.hpp>
#include <com/sun/star/drawing/XSlideRenderer.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/rendering/XSpriteCanvas.hpp>
#include <cppuhelper/basemutex.hxx>
#include <cppuhelper/compbase2.hxx>
#include <boost/noncopyable.hpp>

namespace css = ::com::sun::star;

namespace sd { namespace presenter {

namespace {
    typedef ::cppu::WeakComponentImplHelper2 <
        css::drawing::XSlideRenderer,
        css::lang::XInitialization
    > SlideRendererInterfaceBase;
}


/** Render single slides into bitmaps.
*/
class SlideRenderer
    : private ::boost::noncopyable,
      protected ::cppu::BaseMutex,
      public SlideRendererInterfaceBase
{
public:
    explicit SlideRenderer (const css::uno::Reference<css::uno::XComponentContext>& rxContext);
    virtual ~SlideRenderer (void);
    virtual void SAL_CALL disposing (void);


    // XInitialization

    virtual void SAL_CALL initialize (const css::uno::Sequence<css::uno::Any>& rArguments)
        throw (css::uno::Exception, css::uno::RuntimeException);


    // XSlideRenderer

    virtual css::uno::Reference<css::awt::XBitmap> SAL_CALL createPreview (
        const ::css::uno::Reference<css::drawing::XDrawPage>& rxSlide,
        const css::awt::Size& rMaximumPreviewPixelSize,
        sal_Int16 nSuperSampleFactor)
        throw (css::uno::RuntimeException);

    virtual css::uno::Reference<css::rendering::XBitmap> SAL_CALL createPreviewForCanvas (
        const ::css::uno::Reference<css::drawing::XDrawPage>& rxSlide,
        const css::awt::Size& rMaximumPreviewPixelSize,
        sal_Int16 nSuperSampleFactor,
        const ::css::uno::Reference<css::rendering::XCanvas>& rxCanvas)
        throw (css::uno::RuntimeException);

    virtual css::awt::Size SAL_CALL calculatePreviewSize (
        double nSlideAspectRatio,
        const css::awt::Size& rMaximumPreviewPixelSize)
        throw (css::uno::RuntimeException);

private:
    PreviewRenderer maPreviewRenderer;

    BitmapEx CreatePreview (
        const ::css::uno::Reference<css::drawing::XDrawPage>& rxSlide,
        const css::awt::Size& rMaximumPreviewPixelSize,
        sal_Int16 nSuperSampleFactor)
        throw (css::uno::RuntimeException);

    /** This method throws a DisposedException when the object has already been
        disposed.
    */
    void ThrowIfDisposed (void) throw (css::lang::DisposedException);
};

} } // end of namespace ::sd::presenter

#endif

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