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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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;
// Java
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
// FOP
import org.apache.fop.datatypes.Length;
import org.apache.fop.fo.XMLObj;
import org.apache.fop.fo.flow.InstreamForeignObject;
import org.apache.fop.area.inline.ForeignObject;
import org.apache.fop.area.inline.InlineArea;
import org.apache.fop.area.inline.Viewport;
/**
* LayoutManager for the fo:basic-link formatting object
*/
public class InstreamForeignObjectLM extends LeafNodeLayoutManager {
InstreamForeignObject ifoNode;
/**
* Constructor
* @param node the formatting object that creates this area
*/
public InstreamForeignObjectLM(InstreamForeignObject node) {
super(node);
ifoNode = node;
Viewport areaCurrent = getInlineArea();
setCurrentArea(areaCurrent);
setAlignment(node.getProperty(PR_VERTICAL_ALIGN).getEnum());
setLead(areaCurrent.getHeight());
}
/**
* Get the inline area created by this element.
*
* @return the viewport inline area
*/
private Viewport getInlineArea() {
XMLObj child = (XMLObj) ifoNode.childNodes.get(0);
// viewport size is determined by block-progression-dimension
// and inline-progression-dimension
// if replaced then use height then ignore block-progression-dimension
//int h = this.propertyList.get("height").getLength().mvalue();
// use specified line-height then ignore dimension in height direction
boolean hasLH = false;//propertyList.get("line-height").getSpecifiedValue() != null;
Length len;
int bpd = -1;
int ipd = -1;
boolean bpdauto = false;
if (hasLH) {
bpd = ifoNode.getProperty(PR_LINE_HEIGHT).getLength().getValue();
} else {
// this property does not apply when the line-height applies
// isn't the block-progression-dimension always in the same
// direction as the line height?
len = ifoNode.getProperty(PR_BLOCK_PROGRESSION_DIMENSION | CP_OPTIMUM).getLength();
if (!len.isAuto()) {
bpd = len.getValue();
} else {
len = ifoNode.getProperty(PR_HEIGHT).getLength();
if (!len.isAuto()) {
bpd = len.getValue();
}
}
}
len = ifoNode.getProperty(PR_INLINE_PROGRESSION_DIMENSION | CP_OPTIMUM).getLength();
if (!len.isAuto()) {
ipd = len.getValue();
} else {
len = ifoNode.getProperty(PR_WIDTH).getLength();
if (!len.isAuto()) {
ipd = len.getValue();
}
}
// if auto then use the intrinsic size of the content scaled
// to the content-height and content-width
int cwidth = -1;
int cheight = -1;
len = ifoNode.getProperty(PR_CONTENT_WIDTH).getLength();
if (!len.isAuto()) {
/*if(len.scaleToFit()) {
if(ipd != -1) {
cwidth = ipd;
}
} else {*/
cwidth = len.getValue();
}
len = ifoNode.getProperty(PR_CONTENT_HEIGHT).getLength();
if (!len.isAuto()) {
/*if(len.scaleToFit()) {
if(bpd != -1) {
cwidth = bpd;
}
} else {*/
cheight = len.getValue();
}
Point2D csize = new Point2D.Float(cwidth == -1 ? -1 : cwidth / 1000f,
cheight == -1 ? -1 : cheight / 1000f);
Point2D size = child.getDimension(csize);
if (size == null) {
// error
return null;
}
if (cwidth == -1) {
cwidth = (int)size.getX() * 1000;
}
if (cheight == -1) {
cheight = (int)size.getY() * 1000;
}
int scaling = ifoNode.getProperty(PR_SCALING).getEnum();
if (scaling == Scaling.UNIFORM) {
// adjust the larger
double rat1 = cwidth / (size.getX() * 1000f);
double rat2 = cheight / (size.getY() * 1000f);
if (rat1 < rat2) {
// reduce cheight
cheight = (int)(rat1 * size.getY() * 1000);
} else {
cwidth = (int)(rat2 * size.getX() * 1000);
}
}
if (ipd == -1) {
ipd = cwidth;
}
if (bpd == -1) {
bpd = cheight;
}
boolean clip = false;
if (cwidth > ipd || cheight > bpd) {
int overflow = ifoNode.getProperty(PR_OVERFLOW).getEnum();
if (overflow == Overflow.HIDDEN) {
clip = true;
} else if (overflow == Overflow.ERROR_IF_OVERFLOW) {
ifoNode.getLogger().error("Instream foreign object overflows the viewport: clipping");
clip = true;
}
}
int xoffset = ifoNode.computeXOffset(ipd, cwidth);
int yoffset = ifoNode.computeYOffset(bpd, cheight);
Rectangle2D placement = new Rectangle2D.Float(xoffset, yoffset, cwidth, cheight);
org.w3c.dom.Document doc = child.getDOMDocument();
String ns = child.getDocumentNamespace();
ifoNode.childNodes = null;
ForeignObject foreign = new ForeignObject(doc, ns);
Viewport areaCurrent = new Viewport(foreign);
areaCurrent.setWidth(ipd);
areaCurrent.setHeight(bpd);
areaCurrent.setContentPosition(placement);
areaCurrent.setClip(clip);
areaCurrent.setOffset(0);
return areaCurrent;
}
}
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