libreoffice/fpicker/source/win32/filepicker/previewadapter.hxx

/* -*- 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 INCLUDED_FPICKER_SOURCE_WIN32_FILEPICKER_PREVIEWADAPTER_HXX
#define INCLUDED_FPICKER_SOURCE_WIN32_FILEPICKER_PREVIEWADAPTER_HXX

#include <sal/types.h>
#include <com/sun/star/uno/Sequence.hxx>
#include <com/sun/star/uno/RuntimeException.hpp>
#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/uno/Any.hxx>

#if defined _MSC_VER
#pragma warning(push, 1)
#endif
#include <windows.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
#include <memory>

class CPreviewAdapterImpl;

// A kind of a facade for the preview class.
// We want to hide the fact that the preview
// window may only become visible if there is
// a valid parent window (means, the FilePicker)
// is in execution mode. So unless someone sets
// the preview active with a valid parent
// window the preview may not be visible

class CPreviewAdapter
{
public:

    // ctor
    explicit CPreviewAdapter(HINSTANCE instance);

    ~CPreviewAdapter();

    static css::uno::Sequence<sal_Int16> SAL_CALL getSupportedImageFormats();

    sal_Int32 SAL_CALL getTargetColorDepth();

    sal_Int32 SAL_CALL getAvailableWidth();

    sal_Int32 SAL_CALL getAvailableHeight();

    void SAL_CALL setImage(sal_Int16 aImageFormat, const css::uno::Any& aImage)
        throw (css::lang::IllegalArgumentException, css::uno::RuntimeException);

    bool SAL_CALL setShowState(bool bShowState);

    bool SAL_CALL getShowState();

    void SAL_CALL setParent(HWND parent);


    // notification from parent


    void SAL_CALL notifyParentShow(bool bShow);

    void SAL_CALL notifyParentSizeChanged();

    void SAL_CALL notifyParentWindowPosChanged();

private:
    // hide implementation details using the
    // bridge pattern
    std::unique_ptr<CPreviewAdapterImpl> m_pImpl;

// prevent copy and assignment
private:
    CPreviewAdapter(const CPreviewAdapter&);
    CPreviewAdapter& operator=(const CPreviewAdapter&);
};

#endif

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