/* -*- 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 <sal/config.h>

#include <osl/diagnose.h>

#include <tools/debug.hxx>

#include <vcl/metaact.hxx>

#include <vcl/virdev.hxx>

#include <salgdi.hxx>

void OutputDevice::SaveBackground(VirtualDevice& rSaveDevice,

                                  const Point& rPos, const Size& rSize, const Size& rBackgroundSize) const

{

   rSaveDevice.DrawOutDev(Point(), rBackgroundSize, rPos, rSize, *this);

}

vcl::Region OutputDevice::GetClipRegion() const

{

    return PixelToLogic( maRegion );

}

void OutputDevice::SetClipRegion()

{

    if ( mpMetaFile )

        mpMetaFile->AddAction( new MetaClipRegionAction( vcl::Region(), false ) );

    SetDeviceClipRegion( nullptr );

}

void OutputDevice::SetClipRegion( const vcl::Region& rRegion )

{

    if ( mpMetaFile )

        mpMetaFile->AddAction( new MetaClipRegionAction( rRegion, true ) );

    if ( rRegion.IsNull() )

    {

        SetDeviceClipRegion( nullptr );

    }

    else

    {

        vcl::Region aRegion = LogicToPixel( rRegion );

        SetDeviceClipRegion( &aRegion );

    }

}

bool OutputDevice::SelectClipRegion( const vcl::Region& rRegion, SalGraphics* pGraphics )

{

    DBG_TESTSOLARMUTEX();

    if( !pGraphics )

    {

        if( !mpGraphics && !AcquireGraphics() )

            return false;

        assert(mpGraphics);

        pGraphics = mpGraphics;

    }

    pGraphics->SetClipRegion( rRegion, *this );

    return true;

}

void OutputDevice::MoveClipRegion( tools::Long nHorzMove, tools::Long nVertMove )

{

    if ( mbClipRegion )

    {

        if( mpMetaFile )

            mpMetaFile->AddAction( new MetaMoveClipRegionAction( nHorzMove, nVertMove ) );

        maRegion.Move( ImplLogicWidthToDevicePixel( nHorzMove ),

                       ImplLogicHeightToDevicePixel( nVertMove ) );

        mbInitClipRegion = true;

    }

}

void OutputDevice::IntersectClipRegion( const tools::Rectangle& rRect )

{

    if ( mpMetaFile )

        mpMetaFile->AddAction( new MetaISectRectClipRegionAction( rRect ) );

    tools::Rectangle aRect = LogicToPixel( rRect );

    maRegion.Intersect( aRect );

    mbClipRegion        = true;

    mbInitClipRegion    = true;

}

void OutputDevice::IntersectClipRegion( const vcl::Region& rRegion )

{

    if(!rRegion.IsNull())

    {

        if ( mpMetaFile )

            mpMetaFile->AddAction( new MetaISectRegionClipRegionAction( rRegion ) );

        vcl::Region aRegion = LogicToPixel( rRegion );

        maRegion.Intersect( aRegion );

        mbClipRegion        = true;

        mbInitClipRegion    = true;

    }

}

void OutputDevice::InitClipRegion()

{

    DBG_TESTSOLARMUTEX();

    if ( mbClipRegion )

    {

        if ( maRegion.IsEmpty() )

            mbOutputClipped = true;

        else

        {

            mbOutputClipped = false;

            // #102532# Respect output offset also for clip region

            vcl::Region aRegion = ClipToDeviceBounds(ImplPixelToDevicePixel(maRegion));

            if ( aRegion.IsEmpty() )

            {

                mbOutputClipped = true;

            }

            else

            {

                mbOutputClipped = false;

                SelectClipRegion( aRegion );

            }

        }

        mbClipRegionSet = true;

    }

    else

    {

        if ( mbClipRegionSet )

        {

            if (mpGraphics)

                mpGraphics->ResetClipRegion();

            mbClipRegionSet = false;

        }

        mbOutputClipped = false;

    }

    mbInitClipRegion = false;

}

vcl::Region OutputDevice::ClipToDeviceBounds(vcl::Region aRegion) const

{

    aRegion.Intersect(tools::Rectangle{mnOutOffX,

                                       mnOutOffY,

                                       mnOutOffX + GetOutputWidthPixel() - 1,

                                       mnOutOffY + GetOutputHeightPixel() - 1

                                      });

    return aRegion;

}

vcl::Region OutputDevice::GetActiveClipRegion() const

{

    return GetClipRegion();

}

void OutputDevice::ClipToPaintRegion(tools::Rectangle& /*rDstRect*/)

{

    // this is only used in Window, but we still need it as it's called

    // on in other clipping functions

}

void OutputDevice::SetDeviceClipRegion( const vcl::Region* pRegion )

{

    DBG_TESTSOLARMUTEX();

    if ( !pRegion )

    {

        if ( mbClipRegion )

        {

            maRegion            = vcl::Region(true);

            mbClipRegion        = false;

            mbInitClipRegion    = true;

        }

    }

    else

    {

        maRegion            = *pRegion;

        mbClipRegion        = true;

        mbInitClipRegion    = true;

    }

}

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