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/*
* $Id$
* Copyright (C) 2001-2002 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.area;
import java.io.Serializable;
import java.util.Map;
import java.util.HashMap;
// If the area appears more than once in the output
// or if the area has external data it is cached
// to keep track of it and to minimize rendered output
// renderers can render the output once and display it
// for every occurence
// this should also extend to all outputs (including PDFGraphics2D)
// and all types of renderers
/**
* Base object for all areas.
*/
public class Area implements Serializable {
// stacking directions
/**
* Stacking left to right
*/
public static final int LR = 0;
/**
* Stacking right to left
*/
public static final int RL = 1;
/**
* Stacking top to bottom
*/
public static final int TB = 2;
/**
* Stacking bottom to top
*/
public static final int BT = 3;
// orientations for reference areas
/**
* Normal orientation
*/
public static final int ORIENT_0 = 0;
/**
* Rotated 90 degrees clockwise
*/
public static final int ORIENT_90 = 1;
/**
* Rotate 180 degrees
*/
public static final int ORIENT_180 = 2;
/**
* Rotated 270 degrees clockwise
*/
public static final int ORIENT_270 = 3;
// area class values
/**
* Normal class
*/
public static final int CLASS_NORMAL = 0;
/**
* Fixed position class
*/
public static final int CLASS_FIXED = 1;
/**
* Absolute position class
*/
public static final int CLASS_ABSOLUTE = 2;
/**
* Before float class
*/
public static final int CLASS_BEFORE_FLOAT = 3;
/**
* Footnote class
*/
public static final int CLASS_FOOTNOTE = 4;
/**
* Side float class
*/
public static final int CLASS_SIDE_FLOAT = 5;
// IMPORTANT: make sure this is the maximum + 1
/**
* Maximum class count
*/
public static final int CLASS_MAX = CLASS_SIDE_FLOAT + 1;
private int areaClass = CLASS_NORMAL;
private int ipd;
/**
* Traits for this area stored in a HashMap
*/
protected HashMap props = null;
/**
* Get the area class of this area.
*
* @return the area class
*/
public int getAreaClass() {
return areaClass;
}
/**
* Set the area class of this area.
*
* @param areaClass the area class
*/
public void setAreaClass(int areaClass) {
this.areaClass = areaClass;
}
/**
* Set the inline progression dimension of this area.
*
* @param i the new inline progression dimension
*/
public void setIPD(int i) {
ipd = i;
}
/**
* Get the inline progression dimension of this area.
*
* @return the inline progression dimension
*/
public int getIPD() {
return ipd;
}
/**
* Add a child to this area.
* The default is to do nothing. Subclasses must override
* to do something if they can have child areas.
*
* @param child the child area to add
*/
public void addChild(Area child) {
}
/**
* Add a trait property to this area.
*
* @param prop the Trait to add
*/
public void addTrait(Trait prop) {
if (props == null) {
props = new HashMap(20);
}
props.put(prop.propType, prop.data);
}
/**
* Add a trait to this area.
*
* @param traitCode the trait key
* @param prop the value of the trait
*/
public void addTrait(Object traitCode, Object prop) {
if (props == null) {
props = new HashMap(20);
}
props.put(traitCode, prop);
}
/**
* Get the map of all traits on this area.
*
* @return the map of traits
*/
public Map getTraits() {
return this.props;
}
/**
* Get a trait from this area.
*
* @param oTraitCode the trait key
* @return the trait value
*/
public Object getTrait(Object oTraitCode) {
return (props != null ? props.get(oTraitCode) : null);
}
}
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