/* -*- 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 <sfx2/app.hxx>
#include <sfx2/module.hxx>
#include <svx/colorbox.hxx>
#include <svx/dialogs.hrc>

#include <svx/xattr.hxx>
#include <svx/xpool.hxx>
#include <svx/svdattr.hxx>
#include <svx/drawitem.hxx>
#include <cuitabarea.hxx>
#include <dialmgr.hxx>
#include <svx/dlgutil.hxx>
#include <cuitabline.hxx>
#include <svx/xlineit0.hxx>
#include <sfx2/request.hxx>

using namespace com::sun::star;

const sal_uInt16 SvxShadowTabPage::pShadowRanges[] =
{
    SDRATTR_SHADOWCOLOR,
    SDRATTR_SHADOWTRANSPARENCE,
    SID_ATTR_FILL_SHADOW,
    SID_ATTR_FILL_SHADOW,
    SID_ATTR_SHADOW_TRANSPARENCE,
    SID_ATTR_SHADOW_YDISTANCE,
    0
};

SvxShadowTabPage::SvxShadowTabPage( vcl::Window* pParent, const SfxItemSet& rInAttrs ) :

    SvxTabPage          ( pParent,
                          "ShadowTabPage",
                          "cui/ui/shadowtabpage.ui",
                          rInAttrs ),
    m_rOutAttrs           ( rInAttrs ),
    m_pnColorListState    ( nullptr ),
    m_nPageType           ( PageType::Area ),
    m_nDlgType            ( 0 ),
    m_aXFillAttr          ( rInAttrs.GetPool() ),
    m_rXFSet              ( m_aXFillAttr.GetItemSet() )
{
    get(m_pTsbShowShadow,"TSB_SHOW_SHADOW");
    get(m_pGridShadow,"gridSHADOW");
    get(m_pCtlPosition,"CTL_POSITION");
    get(m_pMtrDistance,"MTR_FLD_DISTANCE");
    get(m_pLbShadowColor,"LB_SHADOW_COLOR");
    get(m_pMtrTransparent,"MTR_SHADOW_TRANSPARENT");
    get(m_pCtlXRectPreview,"CTL_COLOR_PREVIEW");

    // this page needs ExchangeSupport
    SetExchangeSupport();

    // adjust metric
    FieldUnit eFUnit = GetModuleFieldUnit( rInAttrs );

    switch ( eFUnit )
    {
        case FUNIT_M:
        case FUNIT_KM:
            eFUnit = FUNIT_MM;
            break;
        default: ;//prevent warning
    }
    SetFieldUnit( *m_pMtrDistance, eFUnit );

    // determine PoolUnit
    SfxItemPool* pPool = m_rOutAttrs.GetPool();
    DBG_ASSERT( pPool, "Where is the pool?" );
    m_ePoolUnit = pPool->GetMetric( SDRATTR_SHADOWXDIST );

    // setting the output device
    drawing::FillStyle eXFS = drawing::FillStyle_SOLID;
    if( m_rOutAttrs.GetItemState( XATTR_FILLSTYLE ) != SfxItemState::DONTCARE )
    {
        eXFS = static_cast<const XFillStyleItem&>( m_rOutAttrs.
                                Get( GetWhich( XATTR_FILLSTYLE ) ) ).GetValue();
        switch( eXFS )
        {
            case drawing::FillStyle_SOLID:
                if( SfxItemState::DONTCARE != m_rOutAttrs.GetItemState( XATTR_FILLCOLOR ) )
                {
                    m_rXFSet.Put( m_rOutAttrs.Get( XATTR_FILLCOLOR ) );
                }
            break;

            case drawing::FillStyle_GRADIENT:
                if( SfxItemState::DONTCARE != m_rOutAttrs.GetItemState( XATTR_FILLGRADIENT ) )
                {
                    m_rXFSet.Put( m_rOutAttrs.Get( XATTR_FILLGRADIENT ) );
                }
            break;

            case drawing::FillStyle_HATCH:
                if( SfxItemState::DONTCARE != m_rOutAttrs.GetItemState( XATTR_FILLHATCH ) )
                {
                    m_rXFSet.Put( m_rOutAttrs.Get( XATTR_FILLHATCH ) );
                }
            break;

            case drawing::FillStyle_BITMAP:
            {
                if( SfxItemState::DONTCARE != m_rOutAttrs.GetItemState( XATTR_FILLBITMAP ) )
                {
                    m_rXFSet.Put( m_rOutAttrs.Get( XATTR_FILLBITMAP ) );
                }
            }
            break;
            case drawing::FillStyle_NONE : break;
            default: break;
        }
    }
    else
    {
        m_rXFSet.Put( XFillColorItem( OUString(), COL_LIGHTRED ) );
    }

    if(drawing::FillStyle_NONE == eXFS)
    {
        // #i96350#
        // fallback to solid fillmode when no fill mode is provided to have
        // a reasonable shadow preview. The used color will be a set one or
        // the default (currently blue8)
        eXFS = drawing::FillStyle_SOLID;
    }

    m_rXFSet.Put( XFillStyleItem( eXFS ) );
    m_pCtlXRectPreview->SetRectangleAttributes(m_aXFillAttr.GetItemSet());
    //aCtlXRectPreview.SetFillAttr( aXFillAttr );

    m_pTsbShowShadow->SetClickHdl( LINK( this, SvxShadowTabPage, ClickShadowHdl_Impl ) );
    m_pLbShadowColor->SetSelectHdl( LINK( this, SvxShadowTabPage, SelectShadowHdl_Impl ) );
    Link<Edit&,void> aLink = LINK( this, SvxShadowTabPage, ModifyShadowHdl_Impl );
    m_pMtrTransparent->SetModifyHdl( aLink );
    m_pMtrDistance->SetModifyHdl( aLink );
}

SvxShadowTabPage::~SvxShadowTabPage()
{
    disposeOnce();
}

void SvxShadowTabPage::dispose()
{
    m_pTsbShowShadow.clear();
    m_pGridShadow.clear();
    m_pCtlPosition.clear();
    m_pMtrDistance.clear();
    m_pLbShadowColor.clear();
    m_pMtrTransparent.clear();
    m_pCtlXRectPreview.clear();
    SvxTabPage::dispose();
}

void SvxShadowTabPage::ActivatePage( const SfxItemSet& rSet )
{
    const SfxUInt16Item* pPageTypeItem = rSet.GetItem<SfxUInt16Item>(SID_PAGE_TYPE, false);
    if (pPageTypeItem)
        SetPageType(static_cast<PageType>(pPageTypeItem->GetValue()));

    if( m_nDlgType == 0 )
    {
        if( m_pColorList.is() )
        {
            // ColorList
            if( *m_pnColorListState & ChangeType::CHANGED ||
                *m_pnColorListState & ChangeType::MODIFIED )
            {
                if( *m_pnColorListState & ChangeType::CHANGED )
                {
                    SvxAreaTabDialog* pArea = dynamic_cast< SvxAreaTabDialog* >( GetParentDialog() );
                    if( pArea )
                    {
                        m_pColorList = pArea->GetNewColorList();
                    }
                    else
                    {
                        SvxLineTabDialog* pLine = dynamic_cast< SvxLineTabDialog* >( GetParentDialog() );
                        if( pLine )
                            m_pColorList = pLine->GetNewColorList();
                    }
                }

                SfxItemSet rAttribs( rSet );
                // rSet contains shadow attributes too, but we want
                // to use it for updating rectangle attributes only,
                // so set the shadow to none here
                SdrOnOffItem aItem( makeSdrShadowItem( false ));
                rAttribs.Put( aItem );

                m_pCtlXRectPreview->SetRectangleAttributes( rAttribs );
                ModifyShadowHdl_Impl( *m_pMtrTransparent );
            }
            m_nPageType = PageType::Shadow;
        }
    }
}


DeactivateRC SvxShadowTabPage::DeactivatePage( SfxItemSet* _pSet )
{
    if( _pSet )
        FillItemSet( _pSet );

    return DeactivateRC::LeavePage;
}


bool SvxShadowTabPage::FillItemSet( SfxItemSet* rAttrs )
{
    bool                bModified = false;

    const SfxPoolItem*  pOld = nullptr;

    if( m_pTsbShowShadow->IsValueChangedFromSaved() )
    {
        TriState eState = m_pTsbShowShadow->GetState();
        assert(eState != TRISTATE_INDET);
            // given how m_pTsbShowShadow is set up and saved in Reset(),
            // eState == TRISTATE_INDET would imply
            // !IsValueChangedFromSaved()
        SdrOnOffItem aItem( makeSdrShadowItem(eState == TRISTATE_TRUE) );
        pOld = GetOldItem( *rAttrs, SDRATTR_SHADOW );
        if ( !pOld || !( *static_cast<const SdrOnOffItem*>(pOld) == aItem ) )
        {
            rAttrs->Put( aItem );
            bModified = true;
        }
    }

    // shadow removal
    // a bit intricate inquiry whether there was something changed,
    // as the items can't be displayed directly on controls
    sal_Int32 nX = 0, nY = 0;
    sal_Int32 nXY = GetCoreValue( *m_pMtrDistance, m_ePoolUnit );

    switch( m_pCtlPosition->GetActualRP() )
    {
        case RectPoint::LT: nX = nY = -nXY;      break;
        case RectPoint::MT: nY = -nXY;           break;
        case RectPoint::RT: nX = nXY; nY = -nXY; break;
        case RectPoint::LM: nX = -nXY;           break;
        case RectPoint::RM: nX = nXY;            break;
        case RectPoint::LB: nX = -nXY; nY = nXY; break;
        case RectPoint::MB: nY = nXY;            break;
        case RectPoint::RB: nX = nY = nXY;       break;
        case RectPoint::MM: break;
    }

    // If the values of the shadow distances==SfxItemState::DONTCARE and the displayed
    // string in the respective MetricField=="", then the comparison of the old
    // and the new distance values would return a wrong result because in such a
    // case the new distance values would match the default values of the MetricField !!!!
    if ( !m_pMtrDistance->IsEmptyFieldValue()                                  ||
         m_rOutAttrs.GetItemState( SDRATTR_SHADOWXDIST ) != SfxItemState::DONTCARE ||
         m_rOutAttrs.GetItemState( SDRATTR_SHADOWYDIST ) != SfxItemState::DONTCARE    )
    {
        sal_Int32 nOldX = 9876543; // impossible value, so DontCare
        sal_Int32 nOldY = 9876543;
        if( m_rOutAttrs.GetItemState( SDRATTR_SHADOWXDIST ) != SfxItemState::DONTCARE &&
            m_rOutAttrs.GetItemState( SDRATTR_SHADOWYDIST ) != SfxItemState::DONTCARE )
        {
            nOldX = m_rOutAttrs.Get( SDRATTR_SHADOWXDIST ).GetValue();
            nOldY = m_rOutAttrs.Get( SDRATTR_SHADOWYDIST ).GetValue();
        }
        SdrMetricItem aXItem( makeSdrShadowXDistItem(nX) );
        pOld = GetOldItem( *rAttrs, SDRATTR_SHADOWXDIST );
        if ( nX != nOldX &&
            ( !pOld || !( *static_cast<const SdrMetricItem*>(pOld) == aXItem ) ) )
        {
            rAttrs->Put( aXItem );
            bModified = true;
        }
        SdrMetricItem aYItem( makeSdrShadowYDistItem(nY) );
        pOld = GetOldItem( *rAttrs, SDRATTR_SHADOWYDIST );
        if ( nY != nOldY &&
            ( !pOld || !( *static_cast<const SdrMetricItem*>(pOld) == aYItem ) ) )
        {
            rAttrs->Put( aYItem );
            bModified = true;
        }
    }

    // ShadowColor
    {
        XColorItem aItem(makeSdrShadowColorItem(m_pLbShadowColor->GetSelectEntryColor()));
        pOld = GetOldItem( *rAttrs, SDRATTR_SHADOWCOLOR );
        if ( !pOld || !( *static_cast<const XColorItem*>(pOld) == aItem ) )
        {
            rAttrs->Put( aItem );
            bModified = true;
        }
    }

    // transparency
    sal_uInt16 nVal = static_cast<sal_uInt16>(m_pMtrTransparent->GetValue());
    if( m_pMtrTransparent->IsValueChangedFromSaved() )
    {
        SdrPercentItem aItem( makeSdrShadowTransparenceItem(nVal) );
        pOld = GetOldItem( *rAttrs, SDRATTR_SHADOWTRANSPARENCE );
        if ( !pOld || !( *static_cast<const SdrPercentItem*>(pOld) == aItem ) )
        {
            rAttrs->Put( aItem );
            bModified = true;
        }
    }

    rAttrs->Put (CntUInt16Item(SID_PAGE_TYPE, static_cast<sal_uInt16>(m_nPageType)));

    return bModified;
}


void SvxShadowTabPage::Reset( const SfxItemSet* rAttrs )
{
    // all objects can have a shadow
    // at the moment there are only 8 possible positions where a shadow can be set

    // has a shadow been set?
    if( rAttrs->GetItemState( SDRATTR_SHADOW ) != SfxItemState::DONTCARE )
    {
        m_pTsbShowShadow->EnableTriState( false );

        if( rAttrs->Get( SDRATTR_SHADOW ).GetValue() )
            m_pTsbShowShadow->SetState( TRISTATE_TRUE );
        else
        {
            m_pTsbShowShadow->SetState( TRISTATE_FALSE );
        }
    }
    else
        m_pTsbShowShadow->SetState( TRISTATE_INDET );

    // distance (only 8 possible positions),
    // so there is only one item evaluated

    if( rAttrs->GetItemState( SDRATTR_SHADOWXDIST ) != SfxItemState::DONTCARE &&
        rAttrs->GetItemState( SDRATTR_SHADOWYDIST ) != SfxItemState::DONTCARE )
    {
        sal_Int32 nX = rAttrs->Get( SDRATTR_SHADOWXDIST ).GetValue();
        sal_Int32 nY = rAttrs->Get( SDRATTR_SHADOWYDIST ).GetValue();

        if( nX != 0 )
            SetMetricValue( *m_pMtrDistance, nX < 0 ? -nX : nX, m_ePoolUnit );
        else
            SetMetricValue( *m_pMtrDistance, nY < 0 ? -nY : nY, m_ePoolUnit );

        // setting the shadow control
        if     ( nX <  0 && nY <  0 ) m_pCtlPosition->SetActualRP( RectPoint::LT );
        else if( nX == 0 && nY <  0 ) m_pCtlPosition->SetActualRP( RectPoint::MT );
        else if( nX >  0 && nY <  0 ) m_pCtlPosition->SetActualRP( RectPoint::RT );
        else if( nX <  0 && nY == 0 ) m_pCtlPosition->SetActualRP( RectPoint::LM );
        // there's no center point anymore
        else if( nX == 0 && nY == 0 ) m_pCtlPosition->SetActualRP( RectPoint::RB );
        else if( nX >  0 && nY == 0 ) m_pCtlPosition->SetActualRP( RectPoint::RM );
        else if( nX <  0 && nY >  0 ) m_pCtlPosition->SetActualRP( RectPoint::LB );
        else if( nX == 0 && nY >  0 ) m_pCtlPosition->SetActualRP( RectPoint::MB );
        else if( nX >  0 && nY >  0 ) m_pCtlPosition->SetActualRP( RectPoint::RB );
    }
    else
    {
        // determine default-distance
        SfxItemPool* pPool = m_rOutAttrs.GetPool();
        const SdrMetricItem* pXDistItem = &pPool->GetDefaultItem(SDRATTR_SHADOWXDIST);
        const SdrMetricItem* pYDistItem = &pPool->GetDefaultItem(SDRATTR_SHADOWYDIST);
        if (pXDistItem && pYDistItem)
        {
            sal_Int32 nX = pXDistItem->GetValue();
            sal_Int32 nY = pYDistItem->GetValue();
            if( nX != 0 )
                SetMetricValue( *m_pMtrDistance, nX < 0 ? -nX : nX, m_ePoolUnit );
            else
                SetMetricValue( *m_pMtrDistance, nY < 0 ? -nY : nY, m_ePoolUnit );
        }

        // Tristate, e. g. multiple objects have been marked of which some have a shadow and some don't.
        // The text (which shall be displayed) of the MetricFields is set to "" and serves as an
        // identification in the method FillItemSet for the fact that the distance value was NOT changed !!!!
        m_pMtrDistance->SetText( "" );
        m_pCtlPosition->SetActualRP( RectPoint::MM );
    }

    if( rAttrs->GetItemState( SDRATTR_SHADOWCOLOR ) != SfxItemState::DONTCARE )
    {
        m_pLbShadowColor->SelectEntry( rAttrs->Get( SDRATTR_SHADOWCOLOR ).GetColorValue() );
    }
    else
        m_pLbShadowColor->SetNoSelection();

    if( rAttrs->GetItemState( SDRATTR_SHADOWTRANSPARENCE ) != SfxItemState::DONTCARE )
    {
        sal_uInt16 nTransp = rAttrs->Get( SDRATTR_SHADOWTRANSPARENCE ).GetValue();
        m_pMtrTransparent->SetValue( nTransp );
    }
    else
        m_pMtrTransparent->SetText( "" );

    //aCtlPosition
    m_pMtrDistance->SaveValue();
    m_pLbShadowColor->SaveValue();
    m_pTsbShowShadow->SaveValue();

    // #66832# This field was not saved, but used to determine changes.
    // Why? Seems to be the error.
    // It IS the error.
    m_pMtrTransparent->SaveValue();

    ClickShadowHdl_Impl( nullptr );
    ModifyShadowHdl_Impl( *m_pMtrTransparent );
}


VclPtr<SfxTabPage> SvxShadowTabPage::Create( vcl::Window* pWindow,
                                             const SfxItemSet* rAttrs )
{
    return VclPtr<SvxShadowTabPage>::Create( pWindow, *rAttrs );
}


IMPL_LINK_NOARG(SvxShadowTabPage, ClickShadowHdl_Impl, Button*, void)
{
    if( m_pTsbShowShadow->GetState() == TRISTATE_FALSE )
    {
        m_pGridShadow->Disable();
    }
    else
    {
        m_pGridShadow->Enable();
    }
    m_pCtlPosition->Invalidate();

    ModifyShadowHdl_Impl( *m_pMtrTransparent );
}

IMPL_LINK_NOARG(SvxShadowTabPage, SelectShadowHdl_Impl, SvxColorListBox&, void)
{
    ModifyShadowHdl_Impl(*m_pMtrTransparent);
}

IMPL_LINK_NOARG(SvxShadowTabPage, ModifyShadowHdl_Impl, Edit&, void)
{
    if( m_pTsbShowShadow->GetState() == TRISTATE_TRUE )
        m_rXFSet.Put( XFillStyleItem( drawing::FillStyle_SOLID ) );
    else
        m_rXFSet.Put( XFillStyleItem( drawing::FillStyle_NONE ) );

    m_rXFSet.Put( XFillColorItem( OUString(), m_pLbShadowColor->GetSelectEntryColor() ) );
    sal_uInt16 nVal = static_cast<sal_uInt16>(m_pMtrTransparent->GetValue());
    m_rXFSet.Put( XFillTransparenceItem( nVal ) );

    // shadow removal
    sal_Int32 nX = 0, nY = 0;
    sal_Int32 nXY = GetCoreValue( *m_pMtrDistance, m_ePoolUnit );
    switch( m_pCtlPosition->GetActualRP() )
    {
        case RectPoint::LT: nX = nY = -nXY;      break;
        case RectPoint::MT: nY = -nXY;           break;
        case RectPoint::RT: nX = nXY; nY = -nXY; break;
        case RectPoint::LM: nX = -nXY;           break;
        case RectPoint::RM: nX = nXY;            break;
        case RectPoint::LB: nX = -nXY; nY = nXY; break;
        case RectPoint::MB: nY = nXY;            break;
        case RectPoint::RB: nX = nY = nXY;       break;
        case RectPoint::MM: break;
    }

    m_pCtlXRectPreview->SetShadowPosition(Point(nX, nY));

    m_pCtlXRectPreview->SetShadowAttributes(m_aXFillAttr.GetItemSet());
    //aCtlXRectPreview.SetFillAttr( aXFillAttr );
    m_pCtlXRectPreview->Invalidate();
}


void SvxShadowTabPage::PointChanged( vcl::Window*, RectPoint )
{
    // repaint shadow
    ModifyShadowHdl_Impl( *m_pMtrTransparent );
}

void SvxShadowTabPage::PageCreated(const SfxAllItemSet& aSet)
{
    const SvxColorListItem* pColorListItem = aSet.GetItem<SvxColorListItem>(SID_COLOR_TABLE, false);
    const SfxUInt16Item* pPageTypeItem = aSet.GetItem<SfxUInt16Item>(SID_PAGE_TYPE, false);
    const SfxUInt16Item* pDlgTypeItem = aSet.GetItem<SfxUInt16Item>(SID_DLG_TYPE, false);

    if (pColorListItem)
        SetColorList(pColorListItem->GetColorList());
    if (pPageTypeItem)
        SetPageType(static_cast<PageType>(pPageTypeItem->GetValue()));
    if (pDlgTypeItem)
        SetDlgType(pDlgTypeItem->GetValue());
}

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