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

/*

 * This file is part of the LibreOffice project.

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 * 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_HELPER_GRAPHICHELPER_HXX

#define INCLUDED_OOX_HELPER_GRAPHICHELPER_HXX

#include <map>

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

#include <com/sun/star/uno/Reference.hxx>

#include <oox/dllapi.h>

#include <oox/helper/binarystreambase.hxx>

#include <oox/helper/helper.hxx>

#include <oox/helper/storagebase.hxx>

#include <rtl/ustring.hxx>

#include <sal/types.h>

#include <com/sun/star/graphic/XGraphicProvider2.hpp>

#include <com/sun/star/graphic/XGraphicMapper.hpp>

#include <vcl/vclptr.hxx>

struct WmfExternal;

class OutputDevice;

namespace com::sun::star {

    namespace awt { struct Point; }

    namespace awt { struct Size; }

    namespace io { class XInputStream; }

    namespace frame { class XFrame; }

    namespace graphic { class XGraphic; }

    namespace uno { class XComponentContext; }

}

namespace oox {

/** Provides helper functions for colors, device measurement conversion,

    graphics, and graphic objects handling.

 */

class OOX_DLLPUBLIC GraphicHelper

{

public:

    explicit            GraphicHelper(

                            const css::uno::Reference< css::uno::XComponentContext >& rxContext,

                            const css::uno::Reference< css::frame::XFrame >& rxTargetFrame,

                            StorageRef xStorage );

    virtual             ~GraphicHelper();

    // Avoid implicitly defined copy constructors/assignments for the DLLPUBLIC class (they may

    // require forward-declared classes used internally to be defined in places using GraphicHelper)

    GraphicHelper(const GraphicHelper&) = delete;

    GraphicHelper(GraphicHelper&&) = delete;

    GraphicHelper& operator=(const GraphicHelper&) = delete;

    GraphicHelper& operator=(GraphicHelper&&) = delete;

    // System colors and predefined colors ------------------------------------

    /** Returns a system color specified by the passed XML token identifier. */

    ::Color            getSystemColor( sal_Int32 nToken, ::Color nDefaultRgb = API_RGB_TRANSPARENT ) const;

    /** Derived classes may implement to resolve a scheme color from the passed XML token identifier. */

    virtual ::Color    getSchemeColor( sal_Int32 nToken ) const;

    /** Derived classes may implement to resolve a ColorMap token from the passed XML token identifier. */

    virtual void       getSchemeColorToken(sal_Int32& nToken) const;

    /** Derived classes may implement to resolve a palette index to an RGB color. */

    virtual ::Color    getPaletteColor( sal_Int32 nPaletteIdx ) const;

    virtual sal_Int32 getDefaultChartAreaFillStyle() const;

    /** Returns chartspace automatic default border style */

    static sal_Int32 getDefaultChartAreaLineStyle();

    /** Returns chartspace automatic default border width in Emu */

    static sal_Int16 getDefaultChartAreaLineWidth();

    // Device info and device dependent unit conversion -----------------------

    /** Returns information about the output device. */

    const css::awt::DeviceInfo& getDeviceInfo() const { return maDeviceInfo;}

    /** Converts the passed value from horizontal screen pixels to 1/100 mm. */

    sal_Int32           convertScreenPixelXToHmm( double fPixelX ) const;

    /** Converts the passed value from vertical screen pixels to 1/100 mm. */

    sal_Int32           convertScreenPixelYToHmm( double fPixelY ) const;

    /** Converts the passed size from screen pixels to 1/100 mm. */

    css::awt::Size convertScreenPixelToHmm( const css::awt::Size& rPixel ) const;

    /** Converts the passed value from 1/100 mm to horizontal screen pixels. */

    double              convertHmmToScreenPixelX( sal_Int32 nHmmX ) const;

    /** Converts the passed value from 1/100 mm to vertical screen pixels. */

    double              convertHmmToScreenPixelY( sal_Int32 nHmmY ) const;

    /** Converts the passed point from 1/100 mm to screen pixels. */

    css::awt::Point convertHmmToScreenPixel( const css::awt::Point& rHmm ) const;

    /** Converts the passed size from 1/100 mm to screen pixels. */

    css::awt::Size convertHmmToScreenPixel( const css::awt::Size& rHmm ) const;

    /** Converts the passed point from 1/100 mm to AppFont units. */

    css::awt::Point convertHmmToAppFont( const css::awt::Point& rHmm ) const;

    /** Converts the passed size from 1/100 mm to AppFont units. */

    css::awt::Size convertHmmToAppFont( const css::awt::Size& rHmm ) const;

    // Graphics and graphic objects  ------------------------------------------

    /** Imports a graphic from the passed input stream. */

    css::uno::Reference< css::graphic::XGraphic >

                        importGraphic(

                            const css::uno::Reference< css::io::XInputStream >& rxInStrm,

                            const WmfExternal* pExtHeader = nullptr,

                            const bool bLazyLoad = true ) const;

    /** Imports a graphic from the passed binary memory block. */

    css::uno::Reference< css::graphic::XGraphic >

                        importGraphic( const StreamDataSequence& rGraphicData ) const;

    /** Imports a graphic from the storage stream with the passed path and name. */

    css::uno::Reference< css::graphic::XGraphic >

                        importEmbeddedGraphic(

                            const OUString& rStreamName,

                            const WmfExternal* pExtHeader = nullptr ) const;

    /** calculates the original size of a graphic which is necessary to be able to calculate cropping values

        @return The original Graphic size in 100thmm */

    css::awt::Size getOriginalSize( const css::uno::Reference< css::graphic::XGraphic >& rxGraphic ) const;

    void setGraphicMapper(css::uno::Reference<css::graphic::XGraphicMapper> const & rxGraphicMapper);

    void initializeGraphicMapperIfNeeded() const;

private:

    css::uno::Reference< css::uno::XComponentContext > mxContext;

    css::uno::Reference< css::graphic::XGraphicProvider2 > mxGraphicProvider;

    VclPtr<OutputDevice> mxDefaultOutputDevice;

    css::awt::DeviceInfo maDeviceInfo; ///< Current output device info.

    ::std::map< sal_Int32, ::Color >  maSystemPalette;  ///< Maps system colors (XML tokens) to RGB color values.

    StorageRef          mxStorage;                  ///< Storage containing embedded graphics.

    double              mfPixelPerHmmX;             ///< Number of screen pixels per 1/100 mm in X direction.

    double              mfPixelPerHmmY;             ///< Number of screen pixels per 1/100 mm in Y direction.

    css::uno::Reference<css::graphic::XGraphicMapper> mxGraphicMapper;

};

} // namespace oox

#endif

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