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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.inline;
-
- import java.util.ArrayList;
- import java.util.Iterator;
- import java.util.List;
-
- import org.apache.fop.area.Area;
-
- /**
- * Inline parent area.
- * This is an inline area that can have other inlines as children.
- */
- public class InlineParent extends InlineArea {
-
- private static final long serialVersionUID = -3047168298770354813L;
-
- /**
- * The list of inline areas added to this inline parent.
- */
- protected List<InlineArea> inlines = new ArrayList<InlineArea>();
-
- /** Controls whether the IPD is automatically adjusted based on the area's children. */
- protected transient boolean autoSize;
-
- /** The offset of the <q>beforest</q> child area of this area. */
- protected int minChildOffset;
-
- /**
- * The offset of the <q>afterest</q> child area of this area. Offset from the
- * before-edge of this area's content-rectangle and the after-edge of the child area's
- * allocation-rectangle.
- */
- private int maxAfterEdge;
-
- @Override
- public void addChildArea(Area c) {
- assert c instanceof InlineArea;
- if (inlines.size() == 0) {
- autoSize = (getIPD() == 0);
- }
- InlineArea childArea = (InlineArea) c;
- inlines.add(childArea);
- // set the parent area for the child area
- childArea.setParentArea(this);
- if (autoSize) {
- increaseIPD(childArea.getAllocIPD());
- }
- updateLevel(childArea.getBidiLevel());
- int childOffset = childArea.getVirtualOffset();
- minChildOffset = Math.min(minChildOffset, childOffset);
- maxAfterEdge = Math.max(maxAfterEdge, childOffset + childArea.getVirtualBPD());
- }
-
- @Override
- int getVirtualOffset() {
- return getBlockProgressionOffset() + minChildOffset;
- }
-
- @Override
- int getVirtualBPD() {
- return maxAfterEdge - minChildOffset;
- }
-
- /**
- * Get the child areas for this inline parent.
- *
- * @return the list of child areas
- */
- public List<InlineArea> getChildAreas() {
- return inlines;
- }
-
- /**
- * recursively apply the variation factor to all descendant areas
- * @param variationFactor the variation factor that must be applied to adjustments
- * @param lineStretch the total stretch of the line
- * @param lineShrink the total shrink of the line
- * @return true if there is an UnresolvedArea descendant
- */
- @Override
- public boolean applyVariationFactor(double variationFactor,
- int lineStretch, int lineShrink) {
- boolean hasUnresolvedAreas = false;
- int cumulativeIPD = 0;
- // recursively apply variation factor to descendant areas
- for (int i = 0, len = inlines.size(); i < len; i++) {
- InlineArea inline = inlines.get(i);
- hasUnresolvedAreas |= inline.applyVariationFactor(
- variationFactor, lineStretch, lineShrink);
- cumulativeIPD += inline.getIPD(); //Update this area's IPD based on changes to children
- }
- setIPD(cumulativeIPD);
-
- return hasUnresolvedAreas;
- }
-
- @Override
- public List collectInlineRuns(List runs) {
- for (Iterator<InlineArea> it = getChildAreas().iterator(); it.hasNext();) {
- InlineArea ia = it.next();
- runs = ia.collectInlineRuns(runs);
- }
- return runs;
- }
-
- /**
- * Reset bidirectionality level of all children to default (-1),
- * signalling that they will inherit the level of their parent text area.
- */
- public void resetChildrenLevel() {
- for (Iterator it = inlines.iterator(); it.hasNext();) {
- ((InlineArea) it.next()) .resetBidiLevel();
- }
- }
-
- private void updateLevel(int newLevel) {
- if (newLevel >= 0) {
- int curLevel = getBidiLevel();
- if (curLevel >= 0) {
- if (newLevel < curLevel) {
- setBidiLevel(newLevel);
- }
- } else {
- setBidiLevel(newLevel);
- }
- }
- }
-
-
- }
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