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/*
* Copyright 1999-2005 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: TraitSetter.java,v 1.6 2004/02/27 17:49:25 jeremias Exp $ */
package org.apache.fop.layoutmgr;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.fop.traits.BorderProps;
import org.apache.fop.area.Area;
import org.apache.fop.area.Trait;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.properties.CommonMarginBlock;
import org.apache.fop.fo.properties.CommonBorderPaddingBackground;
import org.apache.fop.fo.properties.CommonTextDecoration;
import org.apache.fop.fo.properties.PercentLength;
/**
* This is a helper class used for setting common traits on areas.
*/
public class TraitSetter {
/** logger */
protected static Log log = LogFactory.getLog(TraitSetter.class);
/**
* Sets border and padding traits on areas.
* @param area area to set the traits on
* @param bpProps border and padding properties
* @param bNotFirst True if the area is not the first area
* @param bNotLast True if the area is not the last area
*/
public static void setBorderPaddingTraits(Area area,
CommonBorderPaddingBackground bpProps, boolean bNotFirst, boolean bNotLast) {
int iBP;
iBP = bpProps.getPadding(CommonBorderPaddingBackground.START, bNotFirst);
if (iBP > 0) {
//area.addTrait(new Trait(Trait.PADDING_START, new Integer(iBP)));
area.addTrait(Trait.PADDING_START, new Integer(iBP));
}
iBP = bpProps.getPadding(CommonBorderPaddingBackground.END, bNotLast);
if (iBP > 0) {
//area.addTrait(new Trait(Trait.PADDING_END, new Integer(iBP)));
area.addTrait(Trait.PADDING_END, new Integer(iBP));
}
iBP = bpProps.getPadding(CommonBorderPaddingBackground.BEFORE, false);
if (iBP > 0) {
// area.addTrait(new Trait(Trait.PADDING_BEFORE, new Integer(iBP)));
area.addTrait(Trait.PADDING_BEFORE, new Integer(iBP));
}
iBP = bpProps.getPadding(CommonBorderPaddingBackground.AFTER, false);
if (iBP > 0) {
//area.addTrait(new Trait(Trait.PADDING_AFTER, new Integer(iBP)));
area.addTrait(Trait.PADDING_AFTER, new Integer(iBP));
}
addBorderTrait(area, bpProps, bNotFirst,
CommonBorderPaddingBackground.START, Trait.BORDER_START);
addBorderTrait(area, bpProps, bNotLast, CommonBorderPaddingBackground.END,
Trait.BORDER_END);
addBorderTrait(area, bpProps, false, CommonBorderPaddingBackground.BEFORE,
Trait.BORDER_BEFORE);
addBorderTrait(area, bpProps, false, CommonBorderPaddingBackground.AFTER,
Trait.BORDER_AFTER);
}
/**
* Sets border traits on an area.
* @param area area to set the traits on
* @param bpProps border and padding properties
*/
private static void addBorderTrait(Area area,
CommonBorderPaddingBackground bpProps,
boolean bDiscard, int iSide,
Object oTrait) {
int iBP = bpProps.getBorderWidth(iSide, bDiscard);
if (iBP > 0) {
// area.addTrait(new Trait(oTrait,
// new BorderProps(bpProps.getBorderStyle(iSide),
// iBP,
// bpProps.getBorderColor(iSide))));
area.addTrait(oTrait,
new BorderProps(bpProps.getBorderStyle(iSide),
iBP, bpProps.getBorderColor(iSide)));
}
}
/**
* Add borders to an area.
* Layout managers that create areas with borders can use this to
* add the borders to the area.
* @param area the area to set the traits on.
* @param bordProps border properties
*/
public static void addBorders(Area area, CommonBorderPaddingBackground bordProps) {
BorderProps bps = getBorderProps(bordProps, CommonBorderPaddingBackground.BEFORE);
if (bps.width != 0) {
area.addTrait(Trait.BORDER_BEFORE, bps);
}
bps = getBorderProps(bordProps, CommonBorderPaddingBackground.AFTER);
if (bps.width != 0) {
area.addTrait(Trait.BORDER_AFTER, bps);
}
bps = getBorderProps(bordProps, CommonBorderPaddingBackground.START);
if (bps.width != 0) {
area.addTrait(Trait.BORDER_START, bps);
}
bps = getBorderProps(bordProps, CommonBorderPaddingBackground.END);
if (bps.width != 0) {
area.addTrait(Trait.BORDER_END, bps);
}
int padding = bordProps.getPadding(CommonBorderPaddingBackground.START, false);
if (padding != 0) {
area.addTrait(Trait.PADDING_START, new java.lang.Integer(padding));
}
padding = bordProps.getPadding(CommonBorderPaddingBackground.END, false);
if (padding != 0) {
area.addTrait(Trait.PADDING_END, new java.lang.Integer(padding));
}
padding = bordProps.getPadding(CommonBorderPaddingBackground.BEFORE, false);
if (padding != 0) {
area.addTrait(Trait.PADDING_BEFORE, new java.lang.Integer(padding));
}
padding = bordProps.getPadding(CommonBorderPaddingBackground.AFTER, false);
if (padding != 0) {
area.addTrait(Trait.PADDING_AFTER, new java.lang.Integer(padding));
}
}
private static BorderProps getBorderProps(CommonBorderPaddingBackground bordProps, int side) {
BorderProps bps;
bps = new BorderProps(bordProps.getBorderStyle(side),
bordProps.getBorderWidth(side, false),
bordProps.getBorderColor(side));
return bps;
}
/**
* Add background to an area.
* Layout managers that create areas with a background can use this to
* add the background to the area.
* Note: The area's IPD and BPD must be set before calling this method.
* @param area the area to set the traits on
* @param backProps the background properties
*/
public static void addBackground(Area area, CommonBorderPaddingBackground backProps) {
Trait.Background back = new Trait.Background();
back.setColor(backProps.backgroundColor);
if (backProps.getFopImage() != null) {
back.setURL(backProps.backgroundImage);
back.setFopImage(backProps.getFopImage());
back.setRepeat(backProps.backgroundRepeat);
if (backProps.backgroundPositionHorizontal != null) {
if (back.getRepeat() == Constants.EN_NOREPEAT
|| back.getRepeat() == Constants.EN_REPEATY) {
if (backProps.backgroundPositionHorizontal instanceof PercentLength) {
if (area.getIPD() > 0) {
int width = area.getIPD();
width += backProps.getPaddingStart(false);
width += backProps.getPaddingEnd(false);
back.setHoriz((int)((width - back.getFopImage().getIntrinsicWidth())
* ((PercentLength)backProps.backgroundPositionHorizontal).value()));
} else {
//TODO Area IPD has to be set for this to work
log.warn("Horizontal background image positioning ignored");
}
} else {
back.setHoriz(backProps.backgroundPositionHorizontal.getValue());
}
}
}
if (backProps.backgroundPositionVertical != null) {
if (back.getRepeat() == Constants.EN_NOREPEAT
|| back.getRepeat() == Constants.EN_REPEATX) {
if (backProps.backgroundPositionVertical instanceof PercentLength) {
if (area.getBPD() > 0) {
int height = area.getBPD();
height += backProps.getPaddingBefore(false);
height += backProps.getPaddingAfter(false);
back.setVertical(
(int)((height - back.getFopImage().getIntrinsicHeight())
* ((PercentLength)backProps.backgroundPositionVertical).value()));
} else {
//TODO Area BPD has to be set for this to work
log.warn("Vertical background image positioning ignored");
}
} else {
back.setVertical(backProps.backgroundPositionVertical.getValue());
}
}
}
}
if (back.getColor() != null || back.getFopImage() != null) {
area.addTrait(Trait.BACKGROUND, back);
}
}
/**
* Add space to a block area.
* Layout managers that create block areas can use this to add space
* outside of the border rectangle to the area.
* @param area the area to set the traits on.
* @param bpProps the border, padding and background properties
* @param marginProps the margin properties.
*/
public static void addMargins(Area area,
CommonBorderPaddingBackground bpProps,
CommonMarginBlock marginProps) {
int startIndent = marginProps.startIndent.getValue();
if (startIndent != 0) {
area.addTrait(Trait.START_INDENT, new Integer(startIndent));
}
int spaceStart = marginProps.startIndent.getValue()
- bpProps.getBorderStartWidth(false)
- bpProps.getPaddingStart(false);
if (spaceStart != 0) {
area.addTrait(Trait.SPACE_START, new Integer(spaceStart));
}
int endIndent = marginProps.endIndent.getValue();
if (endIndent != 0) {
area.addTrait(Trait.END_INDENT, new Integer(endIndent));
}
int spaceEnd = marginProps.endIndent.getValue()
- bpProps.getBorderEndWidth(false)
- bpProps.getPaddingEnd(false);
if (spaceEnd != 0) {
area.addTrait(Trait.SPACE_END, new Integer(spaceEnd));
}
}
/**
* Sets the traits for breaks on an area.
* @param area the area to set the traits on.
* @param breakBefore the value for break-before
* @param breakAfter the value for break-after
*/
public static void addBreaks(Area area, int breakBefore, int breakAfter) {
area.addTrait(Trait.BREAK_AFTER, new Integer(breakAfter));
area.addTrait(Trait.BREAK_BEFORE, new Integer(breakBefore));
}
/**
* Adds the text-decoration traits to the area.
* @param area the area to set the traits on
* @param deco the text decorations
*/
public static void addTextDecoration(Area area, CommonTextDecoration deco) {
//TODO Finish text-decoration
if (deco != null) {
if (deco.hasUnderline()) {
area.addTrait(Trait.UNDERLINE, Boolean.TRUE);
}
if (deco.hasOverline()) {
area.addTrait(Trait.OVERLINE, Boolean.TRUE);
}
if (deco.hasLineThrough()) {
area.addTrait(Trait.LINETHROUGH, Boolean.TRUE);
}
if (deco.isBlinking()) {
area.addTrait(Trait.BLINK, Boolean.TRUE);
}
}
}
}
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