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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.ColorType;
import org.apache.fop.layout.BlockArea;
import org.apache.fop.layout.*;
import org.apache.fop.layout.inline.InlineArea;
import org.apache.fop.fo.FObj;
import org.apache.fop.layout.FontState;
import org.apache.fop.layout.LineArea;
import org.apache.fop.apps.FOPException;
/**
* this class represents the flow object 'fo:character'. Its use is defined by
* the spec: "The fo:character flow object represents a character that is mapped to
* a glyph for presentation. It is an atomic unit to the formatter.
* When the result tree is interpreted as a tree of formatting objects,
* a character in the result tree is treated as if it were an empty
* element of type fo:character with a character attribute
* equal to the Unicode representation of the character.
* The semantics of an "auto" value for character properties, which is
* typically their initial value, are based on the Unicode codepoint.
* Overrides may be specified in an implementation-specific manner." (6.6.3)
*
*/
public class Character extends FObj {
public final static int OK = 0;
public final static int DOESNOT_FIT = 1;
public Character(FObj parent, PropertyList propertyList) {
super(parent, propertyList);
this.name = "fo:character";
}
public static FObj.Maker maker() {
return new Character.Maker();
}
public static class Maker extends FObj.Maker {
public FObj make(FObj parent,
PropertyList propertyList) throws FOPException {
return new Character(parent, propertyList);
}
}
public Status layout(Area area) throws FOPException {
BlockArea blockArea;
if (!(area instanceof BlockArea)) {
log.error("WARNING: currently Character can only be in a BlockArea");
return new Status(Status.OK);
}
blockArea = (BlockArea)area;
boolean textDecoration;
// 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(area.getFontInfo());
// Common Hyphenation Properties
HyphenationProps mHyphProps = propMgr.getHyphenationProps();
// Common Margin Properties-Inline
MarginInlineProps mProps = propMgr.getMarginInlineProps();
// Common Relative Position Properties
RelativePositionProps mRelProps = propMgr.getRelativePositionProps();
// this.properties.get("alignment-adjust");
// this.properties.get("treat-as-word-space");
// this.properties.get("alignment-baseline");
// this.properties.get("baseline-shift");
// this.properties.get("character");
// this.properties.get("color");
// this.properties.get("dominant-baseline");
// this.properties.get("text-depth");
// this.properties.get("text-altitude");
// this.properties.get("glyph-orientation-horizontal");
// this.properties.get("glyph-orientation-vertical");
// this.properties.get("id");
// this.properties.get("keep-with-next");
// this.properties.get("keep-with-previous");
// this.properties.get("letter-spacing");
// this.properties.get("line-height");
// this.properties.get("line-height-shift-adjustment");
// this.properties.get("score-spaces");
// this.properties.get("suppress-at-line-break");
// this.properties.get("text-decoration");
// this.properties.get("text-shadow");
// this.properties.get("text-transform");
// this.properties.get("word-spacing");
// color properties
ColorType c = this.properties.get("color").getColorType();
float red = c.red();
float green = c.green();
float blue = c.blue();
int whiteSpaceCollapse =
this.properties.get("white-space-collapse").getEnum();
int wrapOption = this.parent.properties.get("wrap-option").getEnum();
int tmp = this.properties.get("text-decoration").getEnum();
if (tmp == org.apache.fop.fo.properties.TextDecoration.UNDERLINE) {
textDecoration = true;
} else {
textDecoration = false;
}
// Character specific properties
char characterValue = this.properties.get("character").getCharacter();
// initialize id
String id = this.properties.get("id").getString();
blockArea.getIDReferences().initializeID(id, blockArea);
LineArea la = blockArea.getCurrentLineArea();
if (la == null) {
return new Status(Status.AREA_FULL_NONE);
}
la.changeFont(propMgr.getFontState(area.getFontInfo()));
la.changeColor(red, green, blue);
la.changeWrapOption(wrapOption);
la.changeWhiteSpaceCollapse(whiteSpaceCollapse);
blockArea.setupLinkSet(this.getLinkSet());
int result = la.addCharacter(characterValue, this.getLinkSet(),
textDecoration);
if (result == Character.DOESNOT_FIT) {
la = blockArea.createNextLineArea();
if (la == null) {
return new Status(Status.AREA_FULL_NONE);
}
la.changeFont(propMgr.getFontState(area.getFontInfo()));
la.changeColor(red, green, blue);
la.changeWrapOption(wrapOption);
la.changeWhiteSpaceCollapse(whiteSpaceCollapse);
blockArea.setupLinkSet(this.getLinkSet());
la.addCharacter(characterValue, this.getLinkSet(),
textDecoration);
}
return new Status(Status.OK);
}
}
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