From: Keiron Liddle Date: Thu, 3 Aug 2000 05:16:44 +0000 (+0000) Subject: handles the fo:instream-foreign-object element X-Git-Tag: pre-columns~287 X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=861a9fab5bc9442e53fb32e699df410b268c8f5d;p=xmlgraphics-fop.git handles the fo:instream-foreign-object element git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@193590 13f79535-47bb-0310-9956-ffa450edef68 --- diff --git a/src/org/apache/fop/fo/flow/InstreamForeignObject.java b/src/org/apache/fop/fo/flow/InstreamForeignObject.java new file mode 100644 index 000000000..b842ff582 --- /dev/null +++ b/src/org/apache/fop/fo/flow/InstreamForeignObject.java @@ -0,0 +1,249 @@ +/*-- $Id$ -- + + ============================================================================ + The Apache Software License, Version 1.1 + ============================================================================ + + Copyright (C) 1999 The Apache Software Foundation. All rights reserved. + + Redistribution and use in source and binary forms, with or without modifica- + tion, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + 3. The end-user documentation included with the redistribution, if any, must + include the following acknowledgment: "This product includes software + developed by the Apache Software Foundation (http://www.apache.org/)." + Alternately, this acknowledgment may appear in the software itself, if + and wherever such third-party acknowledgments normally appear. + + 4. The names "FOP" and "Apache Software Foundation" must not be used to + endorse or promote products derived from this software without prior + written permission. For written permission, please contact + apache@apache.org. + + 5. Products derived from this software may not be called "Apache", nor may + "Apache" appear in their name, without prior written permission of the + Apache Software Foundation. + + THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, + INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND + FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, + INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU- + DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + This software consists of voluntary contributions made by many individuals + on behalf of the Apache Software Foundation and was originally created by + James Tauber . For more information on the Apache + Software Foundation, please see . + + */ + +package org.apache.fop.fo.flow; + +// FOP +import org.apache.fop.fo.*; +import org.apache.fop.fo.properties.*; +import org.apache.fop.layout.*; +import org.apache.fop.layout.BlockArea; +import org.apache.fop.layout.FontState; +import org.apache.fop.apps.FOPException; + +// Java +import java.util.Enumeration; + +public class InstreamForeignObject extends FObj { + /** + * inner class for making SVG objects. + */ + public static class Maker extends FObj.Maker { + + /** + * make an SVG object. + * + * @param parent the parent formatting object + * @param propertyList the explicit properties of this object + * + * @return the SVG object + */ + public FObj make(FObj parent, PropertyList propertyList) + throws FOPException { + return new InstreamForeignObject(parent, propertyList); + } + } + + /** + * returns the maker for this object. + * + * @return the maker for SVG objects + */ + public static FObj.Maker maker() { + return new InstreamForeignObject.Maker(); + } + + FontState fs; + int breakBefore; + int breakAfter; + int width; + int height; + int contwidth; + int contheight; + boolean wauto; + boolean hauto; + boolean cwauto; + boolean chauto; + int spaceBefore; + int spaceAfter; + + Area areaCurrent; + + /** + * constructs an instream-foreign-object object (called by Maker). + * + * @param parent the parent formatting object + * @param propertyList the explicit properties of this object + */ + public InstreamForeignObject(FObj parent, PropertyList propertyList) { + super(parent, propertyList); + this.name = "fo:instream-foreign-object"; + } + + /** + * layout this formatting object. + * + * @param area the area to layout the object into + * + * @return the status of the layout + */ + public Status layout(Area area) throws FOPException { + + if (this.marker == BREAK_AFTER) { + return new Status(Status.OK); + } + + if (this.marker == START) { + /* retrieve properties */ + String id = this.properties.get("id").getString(); + String fontFamily = this.properties.get("font-family").getString(); + String fontStyle = this.properties.get("font-style").getString(); + String fontWeight = this.properties.get("font-weight").getString(); + int fontSize = this.properties.get("font-size").getLength().mvalue(); + + this.fs = new FontState(area.getFontInfo(), fontFamily, + fontStyle, fontWeight, fontSize); + + this.breakBefore = this.properties.get("break-before").getEnum(); + this.breakAfter = this.properties.get("break-after").getEnum(); + this.width = this.properties.get("width").getLength().mvalue(); + this.height = this.properties.get("height").getLength().mvalue(); + this.contwidth = this.properties.get("content-width").getLength().mvalue(); + this.contheight = this.properties.get("content-height").getLength().mvalue(); + this.wauto = this.properties.get("width").getLength().isAuto(); + this.hauto = this.properties.get("height").getLength().isAuto(); + this.cwauto = this.properties.get("content-width").getLength().isAuto(); + this.chauto = this.properties.get("content-height").getLength().isAuto(); + + this.spaceBefore = + this.properties.get("space-before.optimum").getLength().mvalue(); + this.spaceAfter = + this.properties.get("space-after.optimum").getLength().mvalue(); + + area.getIDReferences().createID(id); + /* if is embedded in a block area */ + if (area instanceof BlockArea) { + /* temporarily end the block area */ + area.end(); + } + + this.marker = 0; + + // this doesn't work for auto sizes + if (breakBefore == BreakBefore.PAGE || ((this.height + area.getHeight()) > area.getMaxHeight())) { + return new Status(Status.FORCE_PAGE_BREAK); + } + + if (breakBefore == BreakBefore.ODD_PAGE) { + return new Status(Status.FORCE_PAGE_BREAK_ODD); + } + + if (breakBefore == BreakBefore.EVEN_PAGE) { + return new Status(Status.FORCE_PAGE_BREAK_EVEN); + } + } + + /* if there is a space-before */ + if (spaceBefore != 0) { + /* add a display space */ + area.addDisplaySpace(spaceBefore); + } + + this.areaCurrent = + new ForeignObjectArea(fs, area.getAllocationWidth(), + area.spaceLeft(), 0); + areaCurrent.setPage(area.getPage()); + /* layout foreign object */ +// svg.start(); + + /* add the SVG area to the containing area */ + area.addChild(areaCurrent); + + /* iterate over the child formatting objects and lay them out + into the SVG area */ + int numChildren = this.children.size(); + if(numChildren > 1) { + // error + } + FONode fo = (FONode) children.elementAt(0); + Status status; + // currently FONode must be an SVG + if ((status = fo.layout(this.areaCurrent)).isIncomplete()) { + return status; + } + + /* finish off the SVG area */ +// svg.end(); + + /* increase the height of the containing area accordingly */ + area.increaseHeight(areaCurrent.getHeight()); + + /* if there is a space-after */ + if (spaceAfter != 0) { + /* add a display space */ + area.addDisplaySpace(spaceAfter); + } + + /* if is embedded in a block area */ + if (area instanceof BlockArea) { + /* re-start the block area */ + area.start(); + } + + if (breakAfter == BreakAfter.PAGE) { + this.marker = BREAK_AFTER; + return new Status(Status.FORCE_PAGE_BREAK); + } + + if (breakAfter == BreakAfter.ODD_PAGE) { + this.marker = BREAK_AFTER; + return new Status(Status.FORCE_PAGE_BREAK_ODD); + } + + if (breakAfter == BreakAfter.EVEN_PAGE) { + this.marker = BREAK_AFTER; + return new Status(Status.FORCE_PAGE_BREAK_EVEN); + } + + /* return status */ + return new Status(Status.OK); + } +}