/***********************************************************************
    created:    Mon Jul 18 2005
    author:     Paul D Turner <paul@cegui.org.uk>
*************************************************************************/
/***************************************************************************
 *   Copyright (C) 2004 - 2012 Paul D Turner & The CEGUI Development Team
 *
 *   Permission is hereby granted, free of charge, to any person obtaining
 *   a copy of this software and associated documentation files (the
 *   "Software"), to deal in the Software without restriction, including
 *   without limitation the rights to use, copy, modify, merge, publish,
 *   distribute, sublicense, and/or sell copies of the Software, and to
 *   permit persons to whom the Software is furnished to do so, subject to
 *   the following conditions:
 *
 *   The above copyright notice and this permission notice shall be
 *   included in all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *   MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 *   IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 *   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 *   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *   OTHER DEALINGS IN THE SOFTWARE.
 ***************************************************************************/
#ifndef _CEGUIFalFrameComponent_h_
#define _CEGUIFalFrameComponent_h_

#include "CEGUI/falagard/ComponentBase.h"
#include "CEGUI/XMLSerializer.h"
#include "CEGUI/falagard/FormattingSetting.h"

#if defined(_MSC_VER)
#   pragma warning(push)
#   pragma warning(disable : 4251)
#endif

namespace CEGUI
{
/*!
\brief
    Class that encapsulates information for a frame with background
    (9 images in total)

    Corner images are always drawn at their natural size, edges can be fomatted
    (stretched, tiled or aligned) between the corner pieces for a particular
    edge, the background image will cover the inner rectangle formed by the edge
    images and can be formatted in both dimensions.
*/
class CEGUIEXPORT FrameComponent : public FalagardComponentBase
{
public:
    FrameComponent();

    /*!
    \brief
        Set the formatting to be used for the left edge image.

    \param fmt
        One of the VerticalFormatting enumerated values.
    */
    void setLeftEdgeFormatting(VerticalImageFormatting fmt);

    /*!
    \brief
        Set the formatting to be used for the right edge image.

    \param fmt
        One of the VerticalFormatting enumerated values.
    */
    void setRightEdgeFormatting(VerticalImageFormatting fmt);

    /*!
    \brief
        Set the formatting to be used for the top edge image.

    \param fmt
        One of the HorizontalFormatting enumerated values.
    */
    void setTopEdgeFormatting(HorizontalFormatting fmt);

    /*!
    \brief
        Set the formatting to be used for the bottom edge image.

    \param fmt
        One of the HorizontalFormatting enumerated values.
    */
    void setBottomEdgeFormatting(HorizontalFormatting fmt);

    /*!
    \brief
        Set the vertical formatting to be used for the background image.

    \param fmt
        One of the VerticalFormatting enumerated values.
    */
    void setBackgroundVerticalFormatting(VerticalImageFormatting fmt);

    /*!
    \brief
        Set the horizontal formatting to be used for the background image.

    \param fmt
        One of the HorizontalFormatting enumerated values.
    */
    void setBackgroundHorizontalFormatting(HorizontalFormatting fmt);

    /*!
    \brief
        Set the name of a property that will be used to obtain the formatting
        to use for the left edge image.
    */
    void setLeftEdgeFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Set the name of a property that will be used to obtain the formatting
        to use for the right edge image.
    */
    void setRightEdgeFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Set the name of a property that will be used to obtain the formatting
        to use for the top edge image.
    */
    void setTopEdgeFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Set the name of a property that will be used to obtain the formatting
        to use for the bottom edge image.
    */
    void setBottomEdgeFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Set the name of a property that will be used to obtain the vertical
        formatting to use for the backdround image.
    */
    void setBackgroundVerticalFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Set the name of a property that will be used to obtain the horizontal
        formatting to use for the backdround image.
    */
    void setBackgroundHorizontalFormattingPropertySource(const String& property_name);

    /*!
    \brief
        Return the formatting to be used for the left edge image.

    \return
        One of the VerticalFormatting enumerated values.
    */
    VerticalImageFormatting getLeftEdgeFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the formatting to be used for the right edge image.

    \return
        One of the VerticalFormatting enumerated values.
    */
    VerticalImageFormatting getRightEdgeFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the formatting to be used for the top edge image.

    \return
        One of the HorizontalFormatting enumerated values.
    */
    HorizontalFormatting getTopEdgeFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the formatting to be used for the bottom edge image.

    \return
        One of the HorizontalFormatting enumerated values.
    */
    HorizontalFormatting getBottomEdgeFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the vertical formatting to be used for the background image.

    \return
        One of the VerticalFormatting enumerated values.
    */
    VerticalImageFormatting getBackgroundVerticalFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the horizontal formatting to be used for the background image.

    \return
        One of the HorizontalFormatting enumerated values.
    */
    HorizontalFormatting getBackgroundHorizontalFormatting(const Window& wnd) const;

    /*!
    \brief
        Return the Image object that will be drawn by this FrameComponent
        for a specified frame part.

    \param imageComponent
        One of the FrameImageComponent enumerated values specifying the
        component image to be accessed.

    \param wnd
        Reference to a Window object that will be accessed if the image
        component is fetched from a Property.

    \return
        pointer to an Image object, or 0 if the image had not been set
        or if the image is sourced from a property that returns an empty
        image name.
    */
    const Image* getImage(FrameImageComponent imageComponent,
                          const Window& wnd) const;

    /*!
    \brief
        Return a pointer to the Image object that was set for this FrameComponent
        for a specified frame part.

    \param imageComponent
        One of the FrameImageComponent enumerated values specifying the
        component image to be accessed.

    \return
        Pointer to the Image object, or a null pointer if the image
        had not been set.
    */
    const Image* getImage(FrameImageComponent imageComponent) const;

    /*!
    \brief
        Set an Image that will be drawn by this FrameComponent.

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image to be set.

    \param image
        Pointer to the Image object to be drawn.  If this is 0 then drawing
        of the component image specified by \a part will be disabled.
    */
    void setImage(FrameImageComponent part, const Image* image);

    /*!
    \brief
        Set an Image that will be drawn by this FrameComponent.

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image to be set.

    \param name
        String holding the name of an Image. The image should already exist,
        if the Image does not exist an Exception will be logged and
        drawing of the component image specified by \a part will be
        disabled.
    */
    void setImage(FrameImageComponent part, const String& name);

    /*!
    \brief
        Set the name of the Property that will be accesssed on the target
        Window to determine the Image that will be drawn by the
        FrameComponent.

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image to be set.

    \param name
        String holding the name of a property that will be accessed. If this
        is the empty string then drawing of the component image specified by
        \a part will be disabled.
    */
    void setImagePropertySource(FrameImageComponent part, const String& name);

    /*!
    \brief
        Return whether the given component image has been specified.

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image to check.

    \return
        - true if the image is specified and will be drawn.
        - false if the image is not specified.
    */
    bool isImageSpecified(FrameImageComponent part) const;

    /*!
    \brief
        Return whether the given component image is specified via a
        property.

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image to check.

    \return
        - true if the image is specified and fetched via a property.
        - false if the image is not fetched via a property
          (or is not specified)
    */
    bool isImageFetchedFromProperty(FrameImageComponent part) const;

    /*!
    \brief
        Return the name of the property that will be used to determine the
        image to use for the given component image.
        
        If the returned String is empty, it indicates either that the
        component image is not specified or that the component image is not
        sourced from a property.

    \see
        isImageFetchedFromProperty isImageSpecified

    \param part
        One of the FrameImageComponent enumerated values specifying the
        component image property source to return.
    */
    const String& getImagePropertySource(FrameImageComponent part) const;

    /*!
    \brief
        Writes an xml representation of this FrameComponent to \a out_stream.

    \param xml_stream
        Stream where xml data should be output.


    \return
        Nothing.
    */
    void writeXMLToStream(XMLSerializer& xml_stream) const;

    bool operator==(const FrameComponent& rhs) const;


    //! Default value for the HorzFormat elements of the FrameComponent
    static const HorizontalFormatting HorizontalFormattingDefault;
    //! Default value for the VertFormat elements of the FrameComponent
    static const VerticalImageFormatting VerticalFormattingDefault;

protected:
    struct FrameImageSource
    {
        FrameImageSource() :
            d_specified(false),
            d_image(nullptr)
        {}

        bool operator==(const FrameImageSource& rhs) const
        {
            return d_specified == rhs.d_specified &&
                   d_image == rhs.d_image &&
                   d_propertyName == rhs.d_propertyName;
        }

        bool operator!=(const FrameImageSource& rhs) const
        {
            return !operator==(rhs);
        }
        
        bool d_specified;
        const Image* d_image;
        String d_propertyName;
    };

    void addImageRenderGeometryToWindow_impl(
        Window& srcWindow, Rectf& destRect,
        const CEGUI::ColourRect* modColours,
        const Rectf* clipper) const override;

    void createRenderGeometryForImage(
        std::vector<GeometryBuffer*>& out,
        const Image* image,
        VerticalImageFormatting vertFmt,
        HorizontalFormatting horzFmt,
        Rectf& destRect, const ColourRect& colours,
        const Rectf* clipper, size_t canCombineFromIdx) const;

    FormattingSetting<VerticalImageFormatting>   d_leftEdgeFormatting;
    FormattingSetting<VerticalImageFormatting>   d_rightEdgeFormatting;
    FormattingSetting<HorizontalFormatting> d_topEdgeFormatting;
    FormattingSetting<HorizontalFormatting> d_bottomEdgeFormatting;
    FormattingSetting<VerticalImageFormatting>   d_backgroundVertFormatting;
    FormattingSetting<HorizontalFormatting> d_backgroundHorzFormatting;

    //! FrameImageSource array describing images to be used.
    FrameImageSource d_frameImages[static_cast<int>(FrameImageComponent::FrameImageCount)];
};

}

#if defined(_MSC_VER)
#   pragma warning(pop)
#endif

#endif

