/* -*- 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 <comphelper/lok.hxx>

#include <tools/mapunit.hxx>

#include <vcl/outdev.hxx>

#include <vcl/decoview.hxx>

#include <vcl/svapp.hxx>

#include <vcl/settings.hxx>

#include <cbutton.hxx>

ScDDComboBoxButton::ScDDComboBoxButton( OutputDevice* pOutputDevice )

    :   pOut( pOutputDevice )

{

    SetOptSizePixel();

}

ScDDComboBoxButton::~ScDDComboBoxButton()

{

}

void ScDDComboBoxButton::SetOutputDevice( OutputDevice* pOutputDevice )

{

    pOut = pOutputDevice;

}

void ScDDComboBoxButton::SetOptSizePixel()

{

    aBtnSize = pOut->LogicToPixel(Size(8, 11), MapMode(MapUnit::MapAppFont));

    aBtnSize.setWidth( std::max(aBtnSize.Width(), static_cast<tools::Long>(pOut->GetSettings().GetStyleSettings().GetScrollBarSize())) );

}

void ScDDComboBoxButton::Draw( const Point& rAt,

                               const Size&  rSize )

{

    if ( rSize.IsEmpty() )

        return;

    // save old state

    bool        bHadFill   = pOut->IsFillColor();

    Color       aOldFill   = pOut->GetFillColor();

    bool        bHadLine   = pOut->IsLineColor();

    Color       aOldLine   = pOut->GetLineColor();

    bool        bOldEnable = pOut->IsMapModeEnabled();

    tools::Rectangle   aBtnRect( rAt, rSize );

    if (!comphelper::LibreOfficeKit::isActive())

        pOut->EnableMapMode(false);

    DecorationView aDecoView( pOut);

    tools::Rectangle aInnerRect=aDecoView.DrawButton( aBtnRect, DrawButtonFlags::Default );

    aInnerRect.AdjustLeft(1 );

    aInnerRect.AdjustTop(1 );

    aInnerRect.AdjustRight( -1 );

    aInnerRect.AdjustBottom( -1 );

    Size  aInnerSize   = aInnerRect.GetSize();

    Point aInnerCenter = aInnerRect.Center();

    aInnerRect.SetTop( aInnerCenter.Y() - (aInnerSize.Width()>>1) );

    aInnerRect.SetBottom( aInnerCenter.Y() + (aInnerSize.Width()>>1) );

    ImpDrawArrow( aInnerRect );

    // restore old state

    pOut->EnableMapMode( bOldEnable );

    if (bHadLine)

        pOut->SetLineColor(aOldLine);

    else

        pOut->SetLineColor();

    if (bHadFill)

        pOut->SetFillColor(aOldFill);

    else

        pOut->SetFillColor();

}

void ScDDComboBoxButton::ImpDrawArrow( const tools::Rectangle& rRect )

{

    // no need to save old line and fill color here (is restored after the call)

    tools::Rectangle   aPixRect = rRect;

    Point       aCenter  = aPixRect.Center();

    Size        aSize    = aPixRect.GetSize();

    Size aSize3;

    aSize3.setWidth( aSize.Width() >> 1 );

    aSize3.setHeight( aSize.Height() >> 1 );

    Size aSize4;

    aSize4.setWidth( aSize.Width() >> 2 );

    aSize4.setHeight( aSize.Height() >> 2 );

    tools::Rectangle aTempRect = aPixRect;

    const StyleSettings& rSett = Application::GetSettings().GetStyleSettings();

    Color aColor( rSett.GetButtonTextColor() );

    pOut->SetFillColor( aColor );

    pOut->SetLineColor( aColor );

    aTempRect.SetLeft( aCenter.X() - aSize4.Width() );

    aTempRect.SetRight( aCenter.X() + aSize4.Width() );

    aTempRect.SetTop( aCenter.Y() - aSize3.Height() );

    aTempRect.SetBottom( aCenter.Y() - 1 );

    pOut->DrawRect( aTempRect );

    Point aPos1( aCenter.X()-aSize3.Width(), aCenter.Y() );

    Point aPos2( aCenter.X()+aSize3.Width(), aCenter.Y() );

    while( aPos1.X() <= aPos2.X() )

    {

        pOut->DrawLine( aPos1, aPos2 );

        aPos1.AdjustX( 1 ); aPos2.AdjustX( -1 );

        aPos1.AdjustY( 1 ); aPos2.AdjustY( 1 );

    }

    pOut->DrawLine( Point( aCenter.X() - aSize3.Width(), aPos1.Y()+1 ),

                    Point( aCenter.X() + aSize3.Width(), aPos1.Y()+1 ) );

}

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