/* -*- 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 .
 */

#include "PreviewValueSet.hxx"
#include <vcl/image.hxx>


namespace sd { namespace sidebar {


PreviewValueSet::PreviewValueSet (::Window* pParent)
    : ValueSet (pParent, WB_TABSTOP),
      maPreviewSize(10,10),
      mnBorderWidth(3),
      mnBorderHeight(3),
      mnMaxColumnCount(-1)
{
    SetStyle (
        GetStyle()
        & ~(WB_ITEMBORDER)// | WB_MENUSTYLEVALUESET)
        //        | WB_FLATVALUESET);
        );
    SetColCount(2);
    SetExtraSpacing (2);
}




PreviewValueSet::~PreviewValueSet (void)
{
}




void PreviewValueSet::SetPreviewSize (const Size& rSize)
{
    maPreviewSize = rSize;
}




void PreviewValueSet::SetRightMouseClickHandler (const Link& rLink)
{
    maRightMouseClickHandler = rLink;
}




void PreviewValueSet::MouseButtonDown (const MouseEvent& rEvent)
{
    if (rEvent.IsRight())
        maRightMouseClickHandler.Call(reinterpret_cast<void*>(
            &const_cast<MouseEvent&>(rEvent)));
    else
        ValueSet::MouseButtonDown (rEvent);

}




void PreviewValueSet::Resize (void)
{
    ValueSet::Resize ();

    Size aWindowSize (GetOutputSizePixel());
    if (aWindowSize.Width()>0 && aWindowSize.Height()>0)
    {
        Rearrange();
    }
}




void PreviewValueSet::Rearrange (bool /*bForceRequestResize*/)
{
    sal_uInt16 nNewColumnCount (CalculateColumnCount (
        GetOutputSizePixel().Width()));
    sal_uInt16 nNewRowCount (CalculateRowCount (nNewColumnCount));

    SetColCount(nNewColumnCount);
    SetLineCount(nNewRowCount);
}




sal_uInt16 PreviewValueSet::CalculateColumnCount (int nWidth) const
{
    int nColumnCount = 0;
    if (nWidth > 0)
    {
        nColumnCount = nWidth / (maPreviewSize.Width() + 2*mnBorderWidth);
        if (nColumnCount < 1)
            nColumnCount = 1;
        else if (mnMaxColumnCount>0 && nColumnCount>mnMaxColumnCount)
            nColumnCount = mnMaxColumnCount;
    }
    return (sal_uInt16)nColumnCount;
}




sal_uInt16 PreviewValueSet::CalculateRowCount (sal_uInt16 nColumnCount) const
{
    int nRowCount = 0;
    int nItemCount = GetItemCount();
    if (nColumnCount > 0)
    {
        nRowCount = (nItemCount+nColumnCount-1) / nColumnCount;
        if (nRowCount < 1)
            nRowCount = 1;
    }

    return (sal_uInt16)nRowCount;
}




sal_Int32 PreviewValueSet::GetPreferredWidth (sal_Int32 nHeight)
{
    int nPreferredWidth (maPreviewSize.Width() + 2*mnBorderWidth);

    // Get height of each row.
    int nItemHeight (maPreviewSize.Height() + 2*mnBorderHeight);

    // Calculate the row- and column count and from the later the preferred
    // width.
    int nRowCount = nHeight / nItemHeight;
    if (nRowCount > 0)
    {
        int nColumnCount = (GetItemCount()+nRowCount-1) / nRowCount;
        if (nColumnCount > 0)
            nPreferredWidth = (maPreviewSize.Width() + 2*mnBorderWidth)
                * nColumnCount;
    }

    return nPreferredWidth;
}




sal_Int32 PreviewValueSet::GetPreferredHeight (sal_Int32 nWidth)
{
    int nRowCount (CalculateRowCount(CalculateColumnCount(nWidth)));
    int nItemHeight (maPreviewSize.Height());

    return nRowCount * (nItemHeight + 2*mnBorderHeight);
}




} } // end of namespace sd::sidebar

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
