package org.apache.poi.hssf.usermodel;

/**
 * An abstract shape.
 *
 * @author Glen Stampoultzis (glens at apache.org)
 */
public abstract class HSSFShape
{
    public static final int LINEWIDTH_ONE_PT = 12700;
    public static final int LINEWIDTH_DEFAULT = 9525;

    public static final int LINESTYLE_SOLID = 0;              // Solid (continuous) pen
    public static final int LINESTYLE_DASHSYS = 1;            // PS_DASH system   dash style
    public static final int LINESTYLE_DOTSYS = 2;             // PS_DOT system   dash style
    public static final int LINESTYLE_DASHDOTSYS = 3;         // PS_DASHDOT system dash style
    public static final int LINESTYLE_DASHDOTDOTSYS = 4;      // PS_DASHDOTDOT system dash style
    public static final int LINESTYLE_DOTGEL = 5;             // square dot style
    public static final int LINESTYLE_DASHGEL = 6;            // dash style
    public static final int LINESTYLE_LONGDASHGEL = 7;        // long dash style
    public static final int LINESTYLE_DASHDOTGEL = 8;         // dash short dash
    public static final int LINESTYLE_LONGDASHDOTGEL = 9;     // long dash short dash
    public static final int LINESTYLE_LONGDASHDOTDOTGEL = 10; // long dash short dash short dash
    public static final int LINESTYLE_NONE = -1;

    HSSFShape parent;
    HSSFAnchor anchor;
    int lineStyleColor = 0x08000040;
    int fillColor = 0x08000009;
    int lineWidth = LINEWIDTH_DEFAULT;    // 12700 = 1pt
    int lineStyle = LINESTYLE_SOLID;
    boolean noFill = false;

    /**
     * Create a new shape with the specified parent and anchor.
     */
    HSSFShape( HSSFShape parent, HSSFAnchor anchor )
    {
        this.parent = parent;
        this.anchor = anchor;
    }

    /**
     * Gets the parent shape.
     */
    public HSSFShape getParent()
    {
        return parent;
    }

    /**
     * @return  the anchor that is used by this shape.
     */
    public HSSFAnchor getAnchor()
    {
        return anchor;
    }

    /**
     * Sets a particular anchor.  A top-level shape must have an anchor of
     * HSSFClientAnchor.  A child anchor must have an anchor of HSSFChildAnchor
     *
     * @param anchor    the anchor to use.
     * @throws IllegalArgumentException     when the wrong anchor is used for
     *                                      this particular shape.
     *
     * @see HSSFChildAnchor
     * @see HSSFClientAnchor
     */
    public void setAnchor( HSSFAnchor anchor )
    {
        if ( parent == null )
        {
            if ( anchor instanceof HSSFChildAnchor )
                throw new IllegalArgumentException( "Must use client anchors for shapes directly attached to sheet." );
        }
        else
        {
            if ( anchor instanceof HSSFClientAnchor )
                throw new IllegalArgumentException( "Must use child anchors for shapes attached to groups." );
        }

        this.anchor = anchor;
    }

    /**
     * The color applied to the lines of this shape.
     */
    public int getLineStyleColor()
    {
        return lineStyleColor;
    }

    /**
     * The color applied to the lines of this shape.
     */
    public void setLineStyleColor( int lineStyleColor )
    {
        this.lineStyleColor = lineStyleColor;
    }

    /**
     * The color applied to the lines of this shape.
     */
    public void setLineStyleColor( int red, int green, int blue )
    {
        this.lineStyleColor = ((blue) << 16) | ((green) << 8) | red;
    }

    /**
     * The color used to fill this shape.
     */
    public int getFillColor()
    {
        return fillColor;
    }

    /**
     * The color used to fill this shape.
     */
    public void setFillColor( int fillColor )
    {
        this.fillColor = fillColor;
    }

    /**
     * The color used to fill this shape.
     */
    public void setFillColor( int red, int green, int blue )
    {
        this.fillColor = ((blue) << 16) | ((green) << 8) | red;
    }

    /**
     * @return  returns with width of the line in EMUs.  12700 = 1 pt.
     */
    public int getLineWidth()
    {
        return lineWidth;
    }

    /**
     * Sets the width of the line.  12700 = 1 pt.
     *
     * @param lineWidth width in EMU's.  12700EMU's = 1 pt
     *
     * @see HSSFShape#LINEWIDTH_ONE_PT
     */
    public void setLineWidth( int lineWidth )
    {
        this.lineWidth = lineWidth;
    }

    /**
     * @return One of the constants in LINESTYLE_*
     */
    public int getLineStyle()
    {
        return lineStyle;
    }

    /**
     * Sets the line style.
     *
     * @param lineStyle     One of the constants in LINESTYLE_*
     */
    public void setLineStyle( int lineStyle )
    {
        this.lineStyle = lineStyle;
    }

    /**
     * @return  true if this shape is not filled with a color.
     */
    public boolean isNoFill()
    {
        return noFill;
    }

    /**
     * Sets whether this shape is filled or transparent.
     */
    public void setNoFill( boolean noFill )
    {
        this.noFill = noFill;
    }

    /**
     * Count of all children and their childrens children.
     */
    public int countOfAllChildren()
    {
        return 1;
    }
}