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 * 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 .

 */

#ifndef INCLUDED_OOX_DRAWINGML_CHART_CHARTDRAWINGFRAGMENT_HXX

#define INCLUDED_OOX_DRAWINGML_CHART_CHARTDRAWINGFRAGMENT_HXX

#include <oox/core/fragmenthandler2.hxx>

#include <oox/drawingml/shape.hxx>

namespace oox::drawingml::chart {

/** Relative shape position in a chart object. */

struct AnchorPosModel

{

    double              mfX;                /// X coordinate relative to chart object (0.0 to 1.0).

    double              mfY;                /// Y coordinate relative to chart object (0.0 to 1.0).

                 AnchorPosModel() : mfX( -1.0 ), mfY( -1.0 ) {}

    bool         isValid() const { return (0.0 <= mfX) && (mfX <= 1.0) && (0.0 <= mfY) && (mfY <= 1.0); }

};

/** Absolute shape size in a chart object (in EMUs). */

struct AnchorSizeModel : public EmuSize

{

                 AnchorSizeModel() : EmuSize( -1, -1 ) {}

    bool         isValid() const { return (Width >= 0) && (Height >= 0); }

};

/** Contains the position of a shape in the chart object. Supports different

    shape anchor modes (absolute, relative).

 */

class ShapeAnchor

{

public:

    explicit            ShapeAnchor( bool bRelSize );

    /** Imports the absolute anchor size from the cdr:ext element. */

    void                importExt( const AttributeList& rAttribs );

    /** Sets the relative anchor position from the cdr:from or cdr:to element. */

    void                setPos( sal_Int32 nElement, sal_Int32 nParentContext, std::u16string_view rValue );

    /** Calculates the resulting shape anchor in EMUs. */

    EmuRectangle        calcAnchorRectEmu( const EmuRectangle& rChartRect ) const;

private:

    AnchorPosModel      maFrom;             /// Top-left position relative to chart object.

    AnchorPosModel      maTo;               /// Bottom-right position relative to chart object.

    AnchorSizeModel     maSize;             /// Shape size, if anchor has absolute size.

    bool                mbRelSize;          /// True = relative size, false = absolute size.

};

/** Handler for a chart drawing fragment (c:userShapes root element).

 */

class ChartDrawingFragment final : public ::oox::core::FragmentHandler2

{

public:

    explicit            ChartDrawingFragment(

                            ::oox::core::XmlFilterBase& rFilter,

                            const OUString& rFragmentPath,

                            const css::uno::Reference< css::drawing::XShapes >& rxDrawPage,

                            const css::awt::Size& rChartSize,

                            const css::awt::Point& rShapesOffset,

                            bool bOleSupport );

    virtual             ~ChartDrawingFragment() override;

    virtual ::oox::core::ContextHandlerRef onCreateContext( sal_Int32 nElement, const AttributeList& rAttribs ) override;

    virtual void        onCharacters( const OUString& rChars ) override;

    virtual void        onEndElement() override;

private:

    css::uno::Reference< css::drawing::XShapes >

                        mxDrawPage;             /// Drawing page of this sheet.

    ::oox::drawingml::ShapePtr mxShape;         /// Current top-level shape.

    std::shared_ptr< ShapeAnchor > mxAnchor;    /// Current anchor of top-level shape.

    EmuRectangle        maChartRectEmu;         /// Position and size of the chart object for embedded shapes (in EMUs).

    bool                mbOleSupport;           /// True = allow to insert OLE objects into the drawing page.

};

} // namespace oox::drawingml::chart

#endif

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