| /* |
| * 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.layoutmgr.inline; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.fop.fo.flow.Float; |
| import org.apache.fop.layoutmgr.FloatContentLayoutManager; |
| import org.apache.fop.layoutmgr.InlineKnuthSequence; |
| import org.apache.fop.layoutmgr.KnuthElement; |
| import org.apache.fop.layoutmgr.KnuthPossPosIter; |
| import org.apache.fop.layoutmgr.KnuthSequence; |
| import org.apache.fop.layoutmgr.LayoutContext; |
| import org.apache.fop.layoutmgr.LayoutManager; |
| import org.apache.fop.layoutmgr.Position; |
| import org.apache.fop.layoutmgr.PositionIterator; |
| import org.apache.fop.layoutmgr.SpaceResolver; |
| |
| public class FloatLayoutManager extends InlineStackingLayoutManager { |
| |
| private FloatContentLayoutManager floatContentLM; |
| private KnuthInlineBox anchor; |
| private List<KnuthElement> floatContentKnuthElements; |
| private Float floatContent; |
| private boolean floatContentAreaAdded; |
| |
| public FloatLayoutManager(Float node) { |
| super(node); |
| floatContent = node; |
| } |
| |
| protected LayoutManager getChildLM() { |
| return null; |
| } |
| |
| public LinkedList getNextKnuthElements(LayoutContext context, int alignment) { |
| |
| if (!floatContentAreaAdded && !floatContent.isDisabled()) { |
| floatContentLM = new FloatContentLayoutManager(floatContent); |
| floatContentLM.setParent(this); |
| floatContentLM.initialize(); |
| floatContentKnuthElements = floatContentLM.getNextKnuthElements(context, alignment); |
| SpaceResolver.resolveElementList(floatContentKnuthElements); |
| } |
| |
| // the only knuth element is a zero width and height knuth box |
| LinkedList knuthElements = new LinkedList(); |
| KnuthSequence seq = new InlineKnuthSequence(); |
| anchor = new KnuthInlineBox(0, null, null, true); |
| if (!floatContentAreaAdded) { |
| anchor.setFloatContentLM(floatContentLM); |
| } |
| anchor.setPosition(notifyPos(new Position(this))); |
| seq.add(anchor); |
| knuthElements.add(seq); |
| setFinished(true); |
| |
| return knuthElements; |
| } |
| |
| public void addAreas(PositionIterator posIter, LayoutContext context) { |
| // "Unwrap" the NonLeafPositions stored in posIter |
| while (posIter.hasNext()) { |
| posIter.next(); |
| } |
| } |
| |
| public void processAreas(LayoutContext context) { |
| PositionIterator contentPosIter = new KnuthPossPosIter(floatContentKnuthElements, 0, |
| floatContentKnuthElements.size()); |
| floatContentLM.addAreas(contentPosIter, context); |
| floatContentAreaAdded = true; |
| anchor.setFloatContentLM(null); |
| } |
| } |