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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.fo.flow;
import java.awt.geom.Point2D;
import org.xml.sax.Locator;
import org.apache.fop.apps.FOPException;
import org.apache.fop.datatypes.Length;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.IntrinsicSizeAccess;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.ValidationException;
import org.apache.fop.fo.XMLObj;
import org.apache.fop.fo.properties.CommonAccessibility;
import org.apache.fop.fo.properties.CommonAural;
import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
import org.apache.fop.fo.properties.CommonMarginInline;
import org.apache.fop.fo.properties.CommonRelativePosition;
import org.apache.fop.fo.properties.KeepProperty;
import org.apache.fop.fo.properties.LengthRangeProperty;
/**
* The instream-foreign-object flow formatting object.
* This is an atomic inline object that contains
* xml data.
*/
public class InstreamForeignObject extends FObj implements IntrinsicSizeAccess {
// The value of properties relevant for fo:instream-foreign-object.
private CommonAccessibility commonAccessibility;
private CommonAural commonAural;
private CommonBorderPaddingBackground commonBorderPaddingBackground;
private CommonMarginInline commonMarginInline;
private CommonRelativePosition commonRelativePosition;
private Length alignmentAdjust;
private int alignmentBaseline;
private Length baselineShift;
private LengthRangeProperty blockProgressionDimension;
// private ToBeImplementedProperty clip;
private Length contentHeight;
private String contentType;
private Length contentWidth;
private int displayAlign;
private int dominantBaseline;
private Length height;
private String id;
private LengthRangeProperty inlineProgressionDimension;
private KeepProperty keepWithNext;
private KeepProperty keepWithPrevious;
private Length lineHeight;
private int overflow;
private int scaling;
private int scalingMethod;
private int textAlign;
private int verticalAlign; // shorthand!!!
private Length width;
// End of property values
//Additional value
private Point2D intrinsicDimensions;
/**
* constructs an instream-foreign-object object (called by Maker).
*
* @param parent the parent formatting object
*/
public InstreamForeignObject(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FObj#bind(PropertyList)
*/
public void bind(PropertyList pList) throws FOPException {
commonAccessibility = pList.getAccessibilityProps();
commonAural = pList.getAuralProps();
commonBorderPaddingBackground = pList.getBorderPaddingBackgroundProps();
commonMarginInline = pList.getMarginInlineProps();
commonRelativePosition = pList.getRelativePositionProps();
alignmentAdjust = pList.get(PR_ALIGNMENT_ADJUST).getLength();
alignmentBaseline = pList.get(PR_ALIGNMENT_BASELINE).getEnum();
baselineShift = pList.get(PR_BASELINE_SHIFT).getLength();
blockProgressionDimension = pList.get(PR_BLOCK_PROGRESSION_DIMENSION).getLengthRange();
// clip = pList.get(PR_CLIP);
contentHeight = pList.get(PR_CONTENT_HEIGHT).getLength();
contentType = pList.get(PR_CONTENT_TYPE).getString();
contentWidth = pList.get(PR_CONTENT_WIDTH).getLength();
displayAlign = pList.get(PR_DISPLAY_ALIGN).getEnum();
dominantBaseline = pList.get(PR_DOMINANT_BASELINE).getEnum();
height = pList.get(PR_HEIGHT).getLength();
id = pList.get(PR_ID).getString();
inlineProgressionDimension = pList.get(PR_INLINE_PROGRESSION_DIMENSION).getLengthRange();
keepWithNext = pList.get(PR_KEEP_WITH_NEXT).getKeep();
keepWithPrevious = pList.get(PR_KEEP_WITH_PREVIOUS).getKeep();
lineHeight = pList.get(PR_LINE_HEIGHT).getLength();
overflow = pList.get(PR_OVERFLOW).getEnum();
scaling = pList.get(PR_SCALING).getEnum();
scalingMethod = pList.get(PR_SCALING_METHOD).getEnum();
textAlign = pList.get(PR_TEXT_ALIGN).getEnum();
verticalAlign = pList.get(PR_VERTICAL_ALIGN).getEnum();
width = pList.get(PR_WIDTH).getLength();
}
/**
* @see org.apache.fop.fo.FONode#start
*/
protected void startOfNode() throws FOPException {
checkId(id);
}
/**
* Make sure content model satisfied, if so then tell the
* FOEventHandler that we are at the end of the flow.
* @see org.apache.fop.fo.FONode#endOfNode
*/
protected void endOfNode() throws FOPException {
if (childNodes.size() != 1) {
missingChildElementError("one (1) non-XSL namespace child");
}
}
/**
* @see org.apache.fop.fo.FONode#validateChildNode(Locator, String, String)
* XSL Content Model: one (1) non-XSL namespace child
*/
protected void validateChildNode(Locator loc, String nsURI, String localName)
throws ValidationException {
if (nsURI == FO_URI) {
invalidChildError(loc, nsURI, localName);
} else if (childNodes != null) {
tooManyNodesError(loc, "child element");
}
}
public int computeXOffset (int ipd, int cwidth) {
int xoffset = 0;
switch (textAlign) {
case EN_CENTER:
xoffset = (ipd - cwidth) / 2;
break;
case EN_END:
xoffset = ipd - cwidth;
break;
case EN_START:
break;
case EN_JUSTIFY:
default:
break;
}
return xoffset;
}
public int computeYOffset(int bpd, int cheight) {
int yoffset = 0;
switch (displayAlign) {
case EN_BEFORE:
break;
case EN_AFTER:
yoffset = bpd - cheight;
break;
case EN_CENTER:
yoffset = (bpd - cheight) / 2;
break;
case EN_AUTO:
default:
break;
}
return yoffset;
}
/**
* Return the "id" property.
*/
public String getId() {
return id;
}
/**
* Return the Common Border, Padding, and Background Properties.
*/
public CommonBorderPaddingBackground getCommonBorderPaddingBackground() {
return commonBorderPaddingBackground;
}
/**
* Return the "line-height" property.
*/
public Length getLineHeight() {
return lineHeight;
}
/**
* Return the "inline-progression-dimension" property.
*/
public LengthRangeProperty getInlineProgressionDimension() {
return inlineProgressionDimension;
}
/**
* Return the "block-progression-dimension" property.
*/
public LengthRangeProperty getBlockProgressionDimension() {
return blockProgressionDimension;
}
/**
* Return the "height" property.
*/
public Length getHeight() {
return height;
}
/**
* Return the "width" property.
*/
public Length getWidth() {
return width;
}
/**
* Return the "content-height" property.
*/
public Length getContentHeight() {
return contentHeight;
}
/**
* Return the "content-width" property.
*/
public Length getContentWidth() {
return contentWidth;
}
/**
* Return the "scaling" property.
*/
public int getScaling() {
return scaling;
}
/**
* Return the "vertical-align" property.
*/
public int getVerticalAlign() {
return verticalAlign;
}
/**
* Return the "overflow" property.
*/
public int getOverflow() {
return overflow;
}
/**
* @see org.apache.fop.fo.FObj#getName()
*/
public String getName() {
return "fo:instream-foreign-object";
}
/**
* @see org.apache.fop.fo.FObj#getNameId()
*/
public int getNameId() {
return FO_INSTREAM_FOREIGN_OBJECT;
}
/**
* Preloads the image so the intrinsic size is available.
*/
private void prepareIntrinsicSize() {
if (intrinsicDimensions == null) {
XMLObj child = (XMLObj)childNodes.get(0);
Point2D csize = new Point2D.Float(-1, -1);
intrinsicDimensions = child.getDimension(csize);
if (intrinsicDimensions == null) {
getLogger().error("Intrinsic dimensions of "
+ " instream-foreign-object could not be determined");
}
}
}
/**
* @see org.apache.fop.fo.IntrinsicSizeAccess#getIntrinsicWidth()
*/
public int getIntrinsicWidth() {
prepareIntrinsicSize();
if (intrinsicDimensions != null) {
return (int)(intrinsicDimensions.getX() * 1000);
} else {
return 0;
}
}
/**
* @see org.apache.fop.fo.IntrinsicSizeAccess#getIntrinsicHeight()
*/
public int getIntrinsicHeight() {
prepareIntrinsicSize();
if (intrinsicDimensions != null) {
return (int)(intrinsicDimensions.getY() * 1000);
} else {
return 0;
}
}
}
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