/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

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 *

 * 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

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#include <primitive2d/wallpaperprimitive2d.hxx>

#include <drawinglayer/primitive2d/bitmapprimitive2d.hxx>

#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>

#include <drawinglayer/primitive2d/fillgraphicprimitive2d.hxx>

#include <basegfx/polygon/b2dpolygontools.hxx>

#include <basegfx/polygon/b2dpolygon.hxx>

#include <drawinglayer/primitive2d/maskprimitive2d.hxx>

#include <basegfx/matrix/b2dhommatrixtools.hxx>

#include <vcl/graph.hxx>

namespace drawinglayer::primitive2d

{

        Primitive2DReference WallpaperBitmapPrimitive2D::create2DDecomposition(const geometry::ViewInformation2D& /*rViewInformation*/) const

        {

            if(getLocalObjectRange().isEmpty() || getBitmap().IsEmpty())

                return nullptr;

            Primitive2DReference aRetval;

            // get bitmap PIXEL size

            const Size aPixelSize = getBitmap().GetSizePixel();

            if(aPixelSize.Width() <= 0 || aPixelSize.Height() <= 0)

                return nullptr;

            if(WallpaperStyle::Scale == getWallpaperStyle())

            {

                // shortcut for scale; use simple BitmapPrimitive2D

                basegfx::B2DHomMatrix aObjectTransform;

                aObjectTransform.set(0, 0, getLocalObjectRange().getWidth());

                aObjectTransform.set(1, 1, getLocalObjectRange().getHeight());

                aObjectTransform.set(0, 2, getLocalObjectRange().getMinX());

                aObjectTransform.set(1, 2, getLocalObjectRange().getMinY());

                aRetval.set(

                    new BitmapPrimitive2D(

                        getBitmap(),

                        aObjectTransform));

            }

            else

            {

                // transform to logic size

                basegfx::B2DHomMatrix aInverseViewTransformation(getViewTransformation());

                aInverseViewTransformation.invert();

                basegfx::B2DVector aLogicSize(aPixelSize.Width(), aPixelSize.Height());

                aLogicSize = aInverseViewTransformation * aLogicSize;

                // apply layout

                basegfx::B2DPoint aTargetTopLeft(getLocalObjectRange().getMinimum());

                bool bUseTargetTopLeft(true);

                bool bNeedsClipping(false);

                switch(getWallpaperStyle())

                {

                    default: //case WallpaperStyle::Tile :, also WallpaperStyle::NONE and WallpaperStyle::ApplicationGradient

                    {

                        bUseTargetTopLeft = false;

                        break;

                    }

                    case WallpaperStyle::Scale :

                    {

                        // handled by shortcut above

                        break;

                    }

                    case WallpaperStyle::TopLeft :

                    {

                        // nothing to do

                        break;

                    }

                    case WallpaperStyle::Top :

                    {

                        const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());

                        aTargetTopLeft.setX(aCenter.getX() - (aLogicSize.getX() * 0.5));

                        break;

                    }

                    case WallpaperStyle::TopRight :

                    {

                        aTargetTopLeft.setX(getLocalObjectRange().getMaxX() - aLogicSize.getX());

                        break;

                    }

                    case WallpaperStyle::Left :

                    {

                        const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());

                        aTargetTopLeft.setY(aCenter.getY() - (aLogicSize.getY() * 0.5));

                        break;

                    }

                    case WallpaperStyle::Center :

                    {

                        const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());

                        aTargetTopLeft = aCenter - (aLogicSize * 0.5);

                        break;

                    }

                    case WallpaperStyle::Right :

                    {

                        const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());

                        aTargetTopLeft.setX(getLocalObjectRange().getMaxX() - aLogicSize.getX());

                        aTargetTopLeft.setY(aCenter.getY() - (aLogicSize.getY() * 0.5));

                        break;

                    }

                    case WallpaperStyle::BottomLeft :

                    {

                        aTargetTopLeft.setY(getLocalObjectRange().getMaxY() - aLogicSize.getY());

                        break;

                    }

                    case WallpaperStyle::Bottom :

                    {

                        const basegfx::B2DPoint aCenter(getLocalObjectRange().getCenter());

                        aTargetTopLeft.setX(aCenter.getX() - (aLogicSize.getX() * 0.5));

                        aTargetTopLeft.setY(getLocalObjectRange().getMaxY() - aLogicSize.getY());

                        break;

                    }

                    case WallpaperStyle::BottomRight :

                    {

                        aTargetTopLeft = getLocalObjectRange().getMaximum() - aLogicSize;

                        break;

                    }

                }

                if(bUseTargetTopLeft)

                {

                    // fill target range

                    const basegfx::B2DRange aTargetRange(aTargetTopLeft, aTargetTopLeft + aLogicSize);

                    // create aligned, single BitmapPrimitive2D

                    basegfx::B2DHomMatrix aObjectTransform;

                    aObjectTransform.set(0, 0, aTargetRange.getWidth());

                    aObjectTransform.set(1, 1, aTargetRange.getHeight());

                    aObjectTransform.set(0, 2, aTargetRange.getMinX());

                    aObjectTransform.set(1, 2, aTargetRange.getMinY());

                    aRetval.set(

                        new BitmapPrimitive2D(

                            getBitmap(),

                            aObjectTransform));

                    // clip when not completely inside object range

                    bNeedsClipping = !getLocalObjectRange().isInside(aTargetRange);

                }

                else

                {

                    // WallpaperStyle::Tile, WallpaperStyle::NONE, WallpaperStyle::ApplicationGradient

                    // convert to relative positions

                    const basegfx::B2DVector aRelativeSize(

                        aLogicSize.getX() / (getLocalObjectRange().getWidth() ? getLocalObjectRange().getWidth() : 1.0),

                        aLogicSize.getY() / (getLocalObjectRange().getHeight() ? getLocalObjectRange().getHeight() : 1.0));

                    basegfx::B2DPoint aRelativeTopLeft(0.0, 0.0);

                    if(WallpaperStyle::Tile != getWallpaperStyle())

                    {

                        aRelativeTopLeft.setX(0.5 - aRelativeSize.getX());

                        aRelativeTopLeft.setY(0.5 - aRelativeSize.getY());

                    }

                    // prepare FillGraphicAttribute

                    const attribute::FillGraphicAttribute aFillGraphicAttribute(

                        Graphic(getBitmap()),

                        basegfx::B2DRange(aRelativeTopLeft, aRelativeTopLeft+ aRelativeSize),

                        true);

                    // create ObjectTransform

                    const basegfx::B2DHomMatrix aObjectTransform(

                        basegfx::utils::createScaleTranslateB2DHomMatrix(

                            getLocalObjectRange().getRange(),

                            getLocalObjectRange().getMinimum()));

                    // create FillBitmapPrimitive

                    aRetval.set(

                        new drawinglayer::primitive2d::FillGraphicPrimitive2D(

                            aObjectTransform,

                            aFillGraphicAttribute));

                    // always embed tiled fill to clipping

                    bNeedsClipping = true;

                }

                if(bNeedsClipping)

                {

                    // embed to clipping; this is necessary for tiled fills

                    basegfx::B2DPolyPolygon aPolyPolygon(

                        basegfx::utils::createPolygonFromRect(getLocalObjectRange()));

                    const drawinglayer::primitive2d::Primitive2DReference xClippedFill(

                        new drawinglayer::primitive2d::MaskPrimitive2D(

                            std::move(aPolyPolygon),

                            { aRetval }));

                    aRetval = xClippedFill;

                }

            }

            return aRetval;

        }

        WallpaperBitmapPrimitive2D::WallpaperBitmapPrimitive2D(

            const basegfx::B2DRange& rObjectRange,

            const Bitmap& rBitmap,

            WallpaperStyle eWallpaperStyle)

        :   maObjectRange(rObjectRange),

            maBitmap(rBitmap),

            meWallpaperStyle(eWallpaperStyle)

        {

        }

        bool WallpaperBitmapPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const

        {

            if(ViewTransformationDependentPrimitive2D::operator==(rPrimitive))

            {

                const WallpaperBitmapPrimitive2D& rCompare = static_cast<const WallpaperBitmapPrimitive2D&>(rPrimitive);

                return (getLocalObjectRange() == rCompare.getLocalObjectRange()

                    && getBitmap() == rCompare.getBitmap()

                    && getWallpaperStyle() == rCompare.getWallpaperStyle());

            }

            return false;

        }

        basegfx::B2DRange WallpaperBitmapPrimitive2D::getB2DRange(const geometry::ViewInformation2D& /*rViewInformation*/) const

        {

            return getLocalObjectRange();

        }

        // provide unique ID

        sal_uInt32 WallpaperBitmapPrimitive2D::getPrimitive2DID() const

        {

            return PRIMITIVE2D_ID_WALLPAPERBITMAPPRIMITIVE2D;

        }

} // end of namespace

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