libreoffice/drawinglayer/source/primitive2d/PolyPolygonGraphicPrimitive2D.cxx

/* -*- 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 <drawinglayer/primitive2d/PolyPolygonGraphicPrimitive2D.hxx>

#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <drawinglayer/primitive2d/drawinglayer_primitivetypes2d.hxx>
#include <drawinglayer/primitive2d/fillgraphicprimitive2d.hxx>
#include <drawinglayer/primitive2d/maskprimitive2d.hxx>
#include <drawinglayer/primitive2d/graphicprimitivehelper2d.hxx>
#include <utility>
#include <vcl/graph.hxx>

using namespace com::sun::star;

namespace drawinglayer::primitive2d
{
Primitive2DReference PolyPolygonGraphicPrimitive2D::create2DDecomposition(
    const geometry::ViewInformation2D& /*rViewInformation*/) const
{
    if (basegfx::fTools::equal(getTransparency(), 1.0))
    {
        // completely transparent, done
        return nullptr;
    }

    if (getFillGraphic().isDefault())
    {
        // no geometry data, done
        return nullptr;
    }

    const Graphic& rGraphic(getFillGraphic().getGraphic());
    const GraphicType aType(rGraphic.GetType());

    // is there a bitmap or a metafile (do we have content)?
    if (GraphicType::Bitmap != aType && GraphicType::GdiMetafile != aType)
    {
        // no geometry data, done
        return nullptr;
    }

    const Size aPrefSize(rGraphic.GetPrefSize());

    // does content have a size?
    if (!(aPrefSize.Width() && aPrefSize.Height()))
    {
        // no geometry data with size, done
        return nullptr;
    }

    // create SubSequence with FillGraphicPrimitive2D based on polygon range
    const basegfx::B2DRange aOutRange(getB2DPolyPolygon().getB2DRange());
    const basegfx::B2DHomMatrix aTransform(basegfx::utils::createScaleTranslateB2DHomMatrix(
        aOutRange.getRange(), aOutRange.getMinimum()));
    drawinglayer::attribute::FillGraphicAttribute aFillGraphicAttribute(getFillGraphic());

    if (aOutRange != getDefinitionRange())
    {
        // we want to paint (tiled) content which is defined relative to DefinitionRange
        // with the same tiling and offset(s) in the target range of the geometry (the
        // polygon). The range given in the local FillGraphicAttribute defines the position
        // of the graphic in unit coordinates relative to the DefinitionRange. Transform
        // this using DefinitionRange to get to the global definition and then with the
        // inverse transformation from the target range to go to unit coordinates relative
        // to that target coordinate system.
        basegfx::B2DRange aAdaptedRange(getFillGraphic().getGraphicRange());

        const basegfx::B2DHomMatrix aFromDefinitionRangeToGlobal(
            basegfx::utils::createScaleTranslateB2DHomMatrix(getDefinitionRange().getRange(),
                                                             getDefinitionRange().getMinimum()));

        aAdaptedRange.transform(aFromDefinitionRangeToGlobal);

        basegfx::B2DHomMatrix aFromGlobalToOutRange(
            basegfx::utils::createScaleTranslateB2DHomMatrix(aOutRange.getRange(),
                                                             aOutRange.getMinimum()));
        aFromGlobalToOutRange.invert();

        aAdaptedRange.transform(aFromGlobalToOutRange);

        aFillGraphicAttribute = drawinglayer::attribute::FillGraphicAttribute(
            getFillGraphic().getGraphic(), aAdaptedRange, getFillGraphic().getTiling(),
            getFillGraphic().getOffsetX(), getFillGraphic().getOffsetY());
    }

    // use tooling due to evtl. animation info needs to be created if
    // the Graphic is animated somehow
    Primitive2DReference aContent(
        createFillGraphicPrimitive2D(aTransform, aFillGraphicAttribute, getTransparency()));

    // embed to mask primitive
    return new MaskPrimitive2D(getB2DPolyPolygon(), Primitive2DContainer{ aContent });
}

PolyPolygonGraphicPrimitive2D::PolyPolygonGraphicPrimitive2D(
    basegfx::B2DPolyPolygon aPolyPolygon, const basegfx::B2DRange& rDefinitionRange,
    const attribute::FillGraphicAttribute& rFillGraphic, double fTransparency)
    : maPolyPolygon(std::move(aPolyPolygon))
    , maDefinitionRange(rDefinitionRange)
    , maFillGraphic(rFillGraphic)
    , mfTransparency(std::max(0.0, std::min(1.0, fTransparency)))
{
}

bool PolyPolygonGraphicPrimitive2D::operator==(const BasePrimitive2D& rPrimitive) const
{
    if (BufferedDecompositionPrimitive2D::operator==(rPrimitive))
    {
        const PolyPolygonGraphicPrimitive2D& rCompare
            = static_cast<const PolyPolygonGraphicPrimitive2D&>(rPrimitive);

        return (getB2DPolyPolygon() == rCompare.getB2DPolyPolygon()
                && getDefinitionRange() == rCompare.getDefinitionRange()
                && getFillGraphic() == rCompare.getFillGraphic()
                && basegfx::fTools::equal(getTransparency(), rCompare.getTransparency()));
    }

    return false;
}

// provide unique ID
sal_uInt32 PolyPolygonGraphicPrimitive2D::getPrimitive2DID() const
{
    return PRIMITIVE2D_ID_POLYPOLYGONGRAPHICPRIMITIVE2D;
}

} // end drawinglayer::primitive2d namespace

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