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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.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 Viewport {
-
- private static final long serialVersionUID = 505781815165102572L;
-
- // this rectangle is relative to the page
- private RegionReference regionReference;
- private Rectangle2D viewArea;
- private boolean clip;
-
- /**
- * 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());
- }
-
- /** {@inheritDoc} */
- public Object clone() throws CloneNotSupportedException {
- RegionViewport rv = (RegionViewport) super.clone();
- rv.regionReference = (RegionReference) regionReference.clone();
- rv.viewArea = (Rectangle2D) viewArea.clone();
- 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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