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/*
* $Id$
* Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.fo.flow;
// FOP
import org.apache.fop.fo.*;
import org.apache.fop.fo.properties.*;
import org.apache.fop.datatypes.*;
import org.apache.fop.area.inline.InlineArea;
import org.apache.fop.layout.*;
import org.apache.fop.layout.FontState;
import org.apache.fop.apps.FOPException;
import org.apache.fop.layoutmgr.LayoutManager;
import org.apache.fop.layoutmgr.InlineStackingLayoutManager;
import org.apache.fop.layoutmgr.LeafNodeLayoutManager;
import org.apache.fop.layoutmgr.ContentLayoutManager;
import org.apache.fop.layoutmgr.LayoutContext;
import org.apache.fop.layoutmgr.LMiter;
import org.apache.fop.area.MinOptMax;
import org.apache.fop.area.inline.Space;
import org.apache.fop.area.inline.Word;
import org.apache.fop.area.inline.InlineParent;
import org.apache.fop.area.inline.FilledArea;
import org.apache.fop.util.CharUtilities;
import org.apache.fop.apps.StructureHandler;
import org.apache.fop.area.Trait;
import java.util.List;
import java.util.ArrayList;
/**
* Implements fo:leader; main property of leader leader-pattern.
* The following patterns are treated: rule, space, dots and use-content.
*/
public class Leader extends FObjMixed {
int ruleStyle;
int ruleThickness;
int leaderPattern;
int patternWidth;
protected FontInfo fontInfo = null;
protected FontState fontState;
protected InlineArea leaderArea = null;
public Leader(FONode parent) {
super(parent);
}
public void addLayoutManager(List list) {
LeafNodeLayoutManager lm = new LeafNodeLayoutManager(this) {
public InlineArea get(LayoutContext context) {
return getInlineArea();
}
protected MinOptMax getAllocationIPD(int refIPD) {
return getAllocIPD(refIPD);
}
/*protected void offsetArea(LayoutContext context) {
if(leaderPattern == LeaderPattern.DOTS) {
curArea.setOffset(context.getBaseline());
}
}*/
};
lm.setAlignment(properties.get("leader-alignment").getEnum());
list.add(lm);
}
protected InlineArea getInlineArea() {
if(leaderArea == null) {
createLeaderArea();
}
return leaderArea;
}
protected void createLeaderArea() {
setup();
if(leaderPattern == LeaderPattern.RULE) {
org.apache.fop.area.inline.Leader leader = new org.apache.fop.area.inline.Leader();
leader.setRuleStyle(ruleStyle);
leader.setRuleThickness(ruleThickness);
leaderArea = leader;
} else if (leaderPattern == LeaderPattern.SPACE) {
leaderArea = new Space();
} else if(leaderPattern == LeaderPattern.DOTS) {
Word w = new Word();
char dot = '.'; // userAgent.getLeaderDotCharacter();
w.setWord("" + dot);
w.addTrait(Trait.FONT_NAME, fontState.getFontName());
w.addTrait(Trait.FONT_SIZE,
new Integer(fontState.getFontSize()));
// set offset of dot within inline parent
w.setOffset(fontState.getAscender());
int width = CharUtilities.getCharWidth(dot, fontState);
Space spacer = null;
if(patternWidth > width) {
spacer = new Space();
spacer.setWidth(patternWidth - width);
width = patternWidth;
}
FilledArea fa = new FilledArea();
fa.setUnitWidth(width);
fa.addChild(w);
if(spacer != null) {
fa.addChild(spacer);
}
fa.setHeight(fontState.getAscender());
leaderArea = fa;
} else if(leaderPattern == LeaderPattern.USECONTENT) {
InlineStackingLayoutManager lm;
lm = new InlineStackingLayoutManager(this,
new LMiter(children.listIterator()));
lm.init();
// get breaks then add areas to FilledArea
FilledArea fa = new FilledArea();
ContentLayoutManager clm = new ContentLayoutManager(fa);
lm.setParentLM(clm);
clm.fillArea(lm);
int width = clm.getStackingSize();
Space spacer = null;
if(patternWidth > width) {
spacer = new Space();
spacer.setWidth(patternWidth - width);
width = patternWidth;
}
fa.setUnitWidth(width);
if(spacer != null) {
fa.addChild(spacer);
}
leaderArea = fa;
}
}
public void setStructHandler(StructureHandler st) {
super.setStructHandler(st);
fontInfo = st.getFontInfo();
}
public void setup() {
// Common Accessibility Properties
AccessibilityProps mAccProps = propMgr.getAccessibilityProps();
// Common Aural Properties
AuralProps mAurProps = propMgr.getAuralProps();
// Common Border, Padding, and Background Properties
BorderAndPadding bap = propMgr.getBorderAndPadding();
BackgroundProps bProps = propMgr.getBackgroundProps();
// Common Font Properties
this.fontState = propMgr.getFontState(fontInfo);
// Common Margin Properties-Inline
MarginInlineProps mProps = propMgr.getMarginInlineProps();
// Common Relative Position Properties
RelativePositionProps mRelProps = propMgr.getRelativePositionProps();
// this.properties.get("alignment-adjust");
// this.properties.get("alignment-baseline");
// this.properties.get("baseline-shift");
// this.properties.get("color");
// this.properties.get("dominant-baseline");
// this.properties.get("text-depth");
// this.properties.get("text-altitude");
setupID();
// this.properties.get("leader-alignment");
// this.properties.get("leader-length");
// this.properties.get("leader-pattern");
// this.properties.get("leader-pattern-width");
// this.properties.get("rule-style");
// this.properties.get("rule-thickness");
// this.properties.get("letter-spacing");
// this.properties.get("line-height");
// this.properties.get("line-height-shift-adjustment");
// this.properties.get("text-shadow");
// this.properties.get("visibility");
// this.properties.get("word-spacing");
// this.properties.get("z-index");
// color properties
ColorType c = this.properties.get("color").getColorType();
float red = c.red();
float green = c.green();
float blue = c.blue();
// fo:leader specific properties
// determines the pattern of leader; allowed values: space, rule,dots, use-content
leaderPattern = this.properties.get("leader-pattern").getEnum();
switch(leaderPattern) {
case LeaderPattern.SPACE:
// use Space
break;
case LeaderPattern.RULE:
// the following properties only apply
// for leader-pattern = "rule"
ruleThickness =
properties.get("rule-thickness").getLength().mvalue();
ruleStyle = properties.get("rule-style").getEnum();
break;
case LeaderPattern.DOTS:
break;
case LeaderPattern.USECONTENT:
// use inline layout manager to create inline areas
// add the inline parent multiple times until leader full
break;
}
// if leaderPatternWidth = 0 = default = use-font-metric
patternWidth =
this.properties.get("leader-pattern-width").getLength().mvalue();
}
protected MinOptMax getAllocIPD(int ipd) {
// length of the leader
int opt = getLength("leader-length.optimum", ipd);
int min = getLength("leader-length.minimum", ipd);
int max = getLength("leader-length.maximum", ipd);
return new MinOptMax(min, opt, max);
}
protected int getLength(String prop, int dim) {
int length;
Length maxlength = properties.get(prop).getLength();
if(maxlength instanceof PercentLength) {
length = (int)(((PercentLength)maxlength).value()
* dim);
} else {
length = maxlength.mvalue();
}
return length;
}
}
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