| /* |
| * 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 org.apache.fop.area.PageViewport; |
| import org.apache.fop.area.Trait; |
| import org.apache.fop.area.inline.InlineArea; |
| import org.apache.fop.area.inline.TextArea; |
| import org.apache.fop.area.inline.UnresolvedPageNumber; |
| import org.apache.fop.fo.flow.AbstractPageNumberCitation; |
| import org.apache.fop.fonts.Font; |
| import org.apache.fop.fonts.FontInfo; |
| import org.apache.fop.fonts.FontTriplet; |
| import org.apache.fop.layoutmgr.LayoutContext; |
| import org.apache.fop.layoutmgr.TraitSetter; |
| import org.apache.fop.traits.MinOptMax; |
| |
| /** |
| * LayoutManager for the fo:page-number-citation(-last) formatting object |
| */ |
| public abstract class AbstractPageNumberCitationLayoutManager extends LeafNodeLayoutManager { |
| |
| /** The page number citation object */ |
| protected AbstractPageNumberCitation citation; |
| |
| /** Font for the page-number-citation */ |
| protected Font font; |
| |
| /** Indicates whether the page referred to by the citation has been resolved yet */ |
| private boolean resolved; |
| |
| private String citationString; |
| |
| /** |
| * Constructor |
| * |
| * @param node the formatting object that creates this area |
| * TODO better retrieval of font info |
| */ |
| public AbstractPageNumberCitationLayoutManager(AbstractPageNumberCitation node) { |
| super(node); |
| citation = node; |
| } |
| |
| /** {@inheritDoc} */ |
| public void initialize() { |
| FontInfo fi = citation.getFOEventHandler().getFontInfo(); |
| FontTriplet[] fontkeys = citation.getCommonFont().getFontState(fi); |
| font = fi.getFontInstance(fontkeys[0], citation.getCommonFont().fontSize.getValue(this)); |
| setCommonBorderPaddingBackground(citation.getCommonBorderPaddingBackground()); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| protected AlignmentContext makeAlignmentContext(LayoutContext context) { |
| return new AlignmentContext( |
| font |
| , citation.getLineHeight().getOptimum(this).getLength().getValue(this) |
| , citation.getAlignmentAdjust() |
| , citation.getAlignmentBaseline() |
| , citation.getBaselineShift() |
| , citation.getDominantBaseline() |
| , context.getAlignmentContext() |
| ); |
| } |
| |
| @Override |
| protected MinOptMax getAllocationIPD(int refIPD) { |
| determineCitationString(); |
| int ipd = getStringWidth(citationString); |
| return MinOptMax.getInstance(ipd); |
| } |
| |
| private void determineCitationString() { |
| assert citationString == null; |
| PageViewport page = getCitedPage(); |
| if (page != null) { |
| resolved = true; |
| citationString = page.getPageNumberString(); |
| } else { |
| resolved = false; |
| citationString = "MMM"; // Use a place holder |
| } |
| } |
| |
| private int getStringWidth(String str) { |
| int width = 0; |
| for (int count = 0; count < str.length(); count++) { |
| width += font.getCharWidth(str.charAt(count)); |
| } |
| return width; |
| } |
| |
| protected abstract PageViewport getCitedPage(); |
| |
| @Override |
| protected InlineArea getEffectiveArea(LayoutContext layoutContext) { |
| InlineArea area = getPageNumberCitationArea(); |
| if (!layoutContext.treatAsArtifact()) { |
| TraitSetter.addStructureTreeElement(area, citation.getStructureTreeElement()); |
| } |
| return area; |
| } |
| |
| private InlineArea getPageNumberCitationArea() { |
| TextArea text; |
| if (resolved) { |
| text = new TextArea(); |
| int bidiLevel = getBidiLevel(); |
| text.setBidiLevel(bidiLevel); |
| text.addWord(citationString, getStringWidth(citationString), null, null, null, 0); |
| } else { |
| UnresolvedPageNumber unresolved = new UnresolvedPageNumber(citation.getRefId(), font, |
| getReferenceType()); |
| getPSLM().addUnresolvedArea(citation.getRefId(), unresolved); |
| text = unresolved; |
| } |
| text.setChangeBarList(getChangeBarList()); |
| setTraits(text); |
| return text; |
| } |
| |
| /** |
| * @return {@link org.apache.fop.area.inline.UnresolvedPageNumber#FIRST} or |
| * {@link org.apache.fop.area.inline.UnresolvedPageNumber#LAST} |
| */ |
| protected abstract boolean getReferenceType(); |
| |
| private void setTraits(TextArea text) { |
| TraitSetter.setProducerID(text, citation.getId()); |
| int bidiLevel = getBidiLevel(); |
| text.setBidiLevel(bidiLevel); |
| int width = getStringWidth(citationString); // TODO: [GA] !I18N! |
| text.setIPD(width); // TODO: [GA] !I18N! |
| text.setBPD(font.getAscender() - font.getDescender()); |
| text.setBaselineOffset(font.getAscender()); |
| TraitSetter.addFontTraits(text, font); |
| text.addTrait(Trait.COLOR, citation.getColor()); |
| TraitSetter.addTextDecoration(text, citation.getTextDecoration()); |
| } |
| |
| /** |
| * @return bidi level governing abstract page number citation |
| */ |
| protected int getBidiLevel() { |
| return citation.getBidiLevel(); |
| } |
| |
| } |
| |