simpleshape.java

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/* ====================================================================
   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

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
==================================================================== */

package org.apache.poi.hslf.model;

import org.apache.poi.ddf.*;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.hslf.record.ColorSchemeAtom;
import org.apache.poi.hslf.record.Record;
import org.apache.poi.hslf.record.InteractiveInfo;
import org.apache.poi.hslf.record.InteractiveInfoAtom;
import org.apache.poi.hslf.exceptions.HSLFException;

import java.awt.*;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
import java.util.Iterator;
import java.io.ByteArrayOutputStream;

/**
 *  An abstract simple (non-group) shape.
 *  This is the parent class for all primitive shapes like Line, Rectangle, etc.
 *
 *  @author Yegor Kozlov
 */
public class SimpleShape extends Shape {

    /**
     * Records stored in EscherClientDataRecord
     */
    protected Record[] _clientRecords;
    protected EscherClientDataRecord _clientData;

    /**
     * Create a SimpleShape object and initialize it from the supplied Record container.
     *
     * @param escherRecord    <code>EscherSpContainer</code> container which holds information about this shape
     * @param parent    the parent of the shape
     */
    protected SimpleShape(EscherContainerRecord escherRecord, Shape parent){
        super(escherRecord, parent);
    }

    /**
     * Create a new Shape
     *
     * @param isChild   <code>true</code> if the Line is inside a group, <code>false</code> otherwise
     * @return the record container which holds this shape
     */
    protected EscherContainerRecord createSpContainer(boolean isChild) {
        _escherContainer = new EscherContainerRecord();
        _escherContainer.setRecordId( EscherContainerRecord.SP_CONTAINER );
        _escherContainer.setOptions((short)15);

        EscherSpRecord sp = new EscherSpRecord();
        int flags = EscherSpRecord.FLAG_HAVEANCHOR | EscherSpRecord.FLAG_HASSHAPETYPE;
        if (isChild) flags |= EscherSpRecord.FLAG_CHILD;
        sp.setFlags(flags);
        _escherContainer.addChildRecord(sp);

        EscherOptRecord opt = new EscherOptRecord();
        opt.setRecordId(EscherOptRecord.RECORD_ID);
        _escherContainer.addChildRecord(opt);

        EscherRecord anchor;
        if(isChild) anchor = new EscherChildAnchorRecord();
        else {
            anchor = new EscherClientAnchorRecord();

            //hack. internal variable EscherClientAnchorRecord.shortRecord can be
            //initialized only in fillFields(). We need to set shortRecord=false;
            byte[] header = new byte[16];
            LittleEndian.putUShort(header, 0, 0);
            LittleEndian.putUShort(header, 2, 0);
            LittleEndian.putInt(header, 4, 8);
            anchor.fillFields(header, 0, null);
        }
        _escherContainer.addChildRecord(anchor);

        return _escherContainer;
    }

    /**
     *  Returns width of the line in in points
     */
    public double getLineWidth(){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
        EscherSimpleProperty prop = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.LINESTYLE__LINEWIDTH);
        return prop == null ? 0 : (double)prop.getPropertyValue()/EMU_PER_POINT;
    }

    /**
     *  Sets the width of line in in points
     *  @param width  the width of line in in points
     */
    public void setLineWidth(double width){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
        setEscherProperty(opt, EscherProperties.LINESTYLE__LINEWIDTH, (int)(width*EMU_PER_POINT));
    }

    /**
     * Sets the color of line
     *
     * @param color new color of the line
     */
    public void setLineColor(Color color){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
        if (color == null) {
            setEscherProperty(opt, EscherProperties.LINESTYLE__NOLINEDRAWDASH, 0x80000);
        } else {
            int rgb = new Color(color.getBlue(), color.getGreen(), color.getRed(), 0).getRGB();
            setEscherProperty(opt, EscherProperties.LINESTYLE__COLOR, rgb);
            setEscherProperty(opt, EscherProperties.LINESTYLE__NOLINEDRAWDASH, color == null ? 0x180010 : 0x180018);
        }
    }

    /**
     * @return color of the line. If color is not set returns <code>java.awt.Color.black</code>
     */
    public Color getLineColor(){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);

        EscherSimpleProperty p1 = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.LINESTYLE__COLOR);
        EscherSimpleProperty p2 = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.LINESTYLE__NOLINEDRAWDASH);
        int p2val = p2 == null ? 0 : p2.getPropertyValue();
        Color clr = null;
        if ((p2val  & 0x8) != 0 || (p2val  & 0x10) != 0){
            int rgb = p1 == null ? 0 : p1.getPropertyValue();
            if (rgb >= 0x8000000) {
                int idx = rgb % 0x8000000;
                if(getSheet() != null) {
                    ColorSchemeAtom ca = getSheet().getColorScheme();
                    if(idx >= 0 && idx <= 7) rgb = ca.getColor(idx);
                }
            }
            Color tmp = new Color(rgb, true);
            clr = new Color(tmp.getBlue(), tmp.getGreen(), tmp.getRed());
        }
        return clr;
    }

    /**
     * Gets line dashing. One of the PEN_* constants defined in this class.
     *
     * @return dashing of the line.
     */
    public int getLineDashing(){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);

        EscherSimpleProperty prop = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.LINESTYLE__LINEDASHING);
        return prop == null ? Line.PEN_SOLID : prop.getPropertyValue();
    }

    /**
     * Sets line dashing. One of the PEN_* constants defined in this class.
     *
     * @param pen new style of the line.
     */
    public void setLineDashing(int pen){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);

        setEscherProperty(opt, EscherProperties.LINESTYLE__LINEDASHING, pen == Line.PEN_SOLID ? -1 : pen);
    }

    /**
     * Sets line style. One of the constants defined in this class.
     *
     * @param style new style of the line.
     */
    public void setLineStyle(int style){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
        setEscherProperty(opt, EscherProperties.LINESTYLE__LINESTYLE, style == Line.LINE_SIMPLE ? -1 : style);
    }

    /**
     * Returns line style. One of the constants defined in this class.
     *
     * @return style of the line.
     */
    public int getLineStyle(){
        EscherOptRecord opt = (EscherOptRecord)getEscherChild(_escherContainer, EscherOptRecord.RECORD_ID);
        EscherSimpleProperty prop = (EscherSimpleProperty)getEscherProperty(opt, EscherProperties.LINESTYLE__LINESTYLE);
        return prop == null ? Line.LINE_SIMPLE : prop.getPropertyValue();
    }

    /**
     * The color used to fill this shape.