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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.
*/
/* $Id$ */
package org.apache.fop.area;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.util.HashMap;
import java.util.TreeMap;
import org.apache.fop.traits.WritingModeTraitsGetter;
/**
* Region Viewport area.
* This object represents the region-viewport-area. It has a
* region-reference-area as its child. These areas are described
* in the fo:region-body description in the XSL Recommendation.
*/
public class RegionViewport extends Area implements Cloneable, Viewport {
private static final long serialVersionUID = 505781815165102572L;
// this rectangle is relative to the page
private RegionReference regionReference;
private Rectangle2D viewArea;
private boolean clip = false;
/**
* Create a new region-viewport-area
*
* @param viewArea the view area of this viewport
*/
public RegionViewport(Rectangle2D viewArea) {
this.viewArea = viewArea;
addTrait(Trait.IS_VIEWPORT_AREA, Boolean.TRUE);
}
/**
* Set the region-reference-area for this region viewport.
*
* @param reg the child region-reference-area inside this viewport
*/
public void setRegionReference(RegionReference reg) {
regionReference = reg;
}
/**
* Get the region-reference-area for this region viewport.
*
* @return the child region-reference-area inside this viewport
*/
public RegionReference getRegionReference() {
return regionReference;
}
/**
* Set the clipping for this region viewport.
*
* @param c the clipping value
*/
public void setClip(boolean c) {
clip = c;
}
/** {@inheritDoc} */
public boolean hasClip() {
return this.clip;
}
/** {@inheritDoc} */
public Rectangle getClipRectangle() {
if (clip) {
return new Rectangle(getIPD(), getBPD());
} else {
return null;
}
}
/**
* Get the view area of this viewport.
*
* @return the viewport rectangle area
*/
public Rectangle2D getViewArea() {
return viewArea;
}
private void writeObject(java.io.ObjectOutputStream out)
throws IOException {
out.writeFloat((float) viewArea.getX());
out.writeFloat((float) viewArea.getY());
out.writeFloat((float) viewArea.getWidth());
out.writeFloat((float) viewArea.getHeight());
out.writeBoolean(clip);
out.writeObject((TreeMap)traits);
out.writeObject(regionReference);
}
private void readObject(java.io.ObjectInputStream in)
throws IOException, ClassNotFoundException {
viewArea = new Rectangle2D.Float(in.readFloat(), in.readFloat(),
in.readFloat(), in.readFloat());
clip = in.readBoolean();
traits = (TreeMap)in.readObject();
setRegionReference((RegionReference) in.readObject());
}
/**
* Clone this region viewport.
* Used when creating a copy from the page master.
*
* @return a new copy of this region viewport
*/
public Object clone() {
RegionViewport rv = new RegionViewport((Rectangle2D)viewArea.clone());
rv.regionReference = (RegionReference)regionReference.clone();
if (traits != null) {
rv.traits = new TreeMap(traits);
}
if (foreignAttributes != null) {
rv.foreignAttributes = new HashMap(foreignAttributes);
}
return rv;
}
/**
* Sets the writing mode traits for the region reference of
* this region viewport
* @param wmtg a WM traits getter
*/
public void setWritingModeTraits(WritingModeTraitsGetter wmtg) {
if (regionReference != null) {
regionReference.setWritingModeTraits(wmtg);
}
}
}
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