/* -*- 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 <vcl/toolkit/imgctrl.hxx>

#include <com/sun/star/awt/ImageScaleMode.hpp>

#include <osl/diagnose.h>

namespace ImageScaleMode = css::awt::ImageScaleMode;

ImageControl::ImageControl( vcl::Window* pParent, WinBits nStyle )

    :FixedImage( pParent, nStyle )

    ,mnScaleMode( ImageScaleMode::ANISOTROPIC )

{

}

Unexecuted instantiation: ImageControl::ImageControl(vcl::Window*, long)

Unexecuted instantiation: ImageControl::ImageControl(vcl::Window*, long)

void ImageControl::SetScaleMode( const ::sal_Int16 _nMode )

{

    if ( _nMode != mnScaleMode )

    {

        mnScaleMode = _nMode;

        Invalidate();

    }

}

void ImageControl::Resize()

{

    Invalidate();

}

namespace

{

    Size lcl_calcPaintSize( const tools::Rectangle& _rPaintRect, const Size& _rBitmapSize )

    {

        const Size aPaintSize = _rPaintRect.GetSize();

        const double nRatioX = 1.0 * aPaintSize.Width() / _rBitmapSize.Width();

        const double nRatioY = 1.0 * aPaintSize.Height() / _rBitmapSize.Height();

        const double nRatioMin = ::std::min( nRatioX, nRatioY );

        return Size( tools::Long( _rBitmapSize.Width() * nRatioMin ), tools::Long( _rBitmapSize.Height() * nRatioMin ) );

    }

    Point lcl_centerWithin( const tools::Rectangle& _rArea, const Size& _rObjectSize )

    {

        Point aPos( _rArea.TopLeft() );

        aPos.AdjustX(( _rArea.GetWidth() - _rObjectSize.Width() ) / 2 );

        aPos.AdjustY(( _rArea.GetHeight() - _rObjectSize.Height() ) / 2 );

        return aPos;

    }

}

void ImageControl::ImplDraw(OutputDevice& rDev, const Point& rPos, const Size& rSize) const

{

    DrawImageFlags nStyle = DrawImageFlags::NONE;

    if ( !IsEnabled() )

        nStyle |= DrawImageFlags::Disable;

    const Image& rImage( GetModeImage() );

    const tools::Rectangle aDrawRect( rPos, rSize );

    if (!rImage)

    {

        OUString  sText( GetText() );

        if ( sText.isEmpty() )

            return;

        WinBits nWinStyle = GetStyle();

        DrawTextFlags nTextStyle = FixedText::ImplGetTextStyle( nWinStyle );

        if ( !IsEnabled() )

            nTextStyle |= DrawTextFlags::Disable;

        rDev.DrawText( aDrawRect, sText, nTextStyle );

        return;

    }

    const Size aBitmapSize = rImage.GetSizePixel();

    switch ( mnScaleMode )

    {

    case ImageScaleMode::NONE:

    {

        rDev.DrawImage(lcl_centerWithin( aDrawRect, aBitmapSize ), rImage, nStyle);

    }

    break;

    case ImageScaleMode::ISOTROPIC:

    {

        const Size aPaintSize = lcl_calcPaintSize( aDrawRect, aBitmapSize );

        rDev.DrawImage(lcl_centerWithin(aDrawRect, aPaintSize), aPaintSize, rImage, nStyle);

    }

    break;

    case ImageScaleMode::ANISOTROPIC:

    {

        rDev.DrawImage(

            aDrawRect.TopLeft(),

            aDrawRect.GetSize(),

            rImage, nStyle );

    }

    break;

    default:

        OSL_ENSURE( false, "ImageControl::ImplDraw: unhandled scale mode!" );

        break;

    }   // switch ( mnScaleMode )

}

void ImageControl::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& /*rRect*/)

{

    ImplDraw(rRenderContext, Point(), GetOutputSizePixel());

    if (!HasFocus())

        return;

    vcl::Window* pBorderWindow = GetWindow(GetWindowType::Border);

    bool bFlat = (GetBorderStyle() == WindowBorderStyle::MONO);

    tools::Rectangle aRect(Point(0,0), pBorderWindow->GetOutputSizePixel());

    auto popIt = pBorderWindow->GetOutDev()->ScopedPush(vcl::PushFlags::FILLCOLOR | vcl::PushFlags::LINECOLOR);

    pBorderWindow->GetOutDev()->SetFillColor();

    pBorderWindow->GetOutDev()->SetLineColor(bFlat ? COL_WHITE : COL_BLACK);

    pBorderWindow->GetOutDev()->DrawRect(aRect);

    aRect.AdjustLeft( 1 );

    aRect.AdjustRight( -1 );

    aRect.AdjustTop( 1 );

    aRect.AdjustBottom( -1 );

    pBorderWindow->GetOutDev()->SetLineColor(bFlat ? COL_BLACK : COL_WHITE);

    pBorderWindow->GetOutDev()->DrawRect(aRect);

}

void ImageControl::Draw( OutputDevice* pDev, const Point& rPos, SystemTextColorFlags )

{

    const Point     aPos  = pDev->LogicToPixel( rPos );

    const Size      aSize = GetSizePixel();

    tools::Rectangle aRect( aPos, aSize );

    auto popIt = pDev->ScopedPush();

    pDev->SetMapMode();

    // Border

    if ( GetStyle() & WB_BORDER )

    {

        ImplDrawFrame( pDev, aRect );

    }

    pDev->IntersectClipRegion( aRect );

    ImplDraw( *pDev, aRect.TopLeft(), aRect.GetSize() );

}

void ImageControl::GetFocus()

{

    FixedImage::GetFocus();

    GetWindow( GetWindowType::Border )->Invalidate();

}

void ImageControl::LoseFocus()

{

    FixedImage::GetFocus();

    GetWindow( GetWindowType::Border )->Invalidate();

}

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