w3c.css.properties.svg.CssFill Maven / Gradle / Ivy
//
// Author: Yves Lafon
//
// (c) COPYRIGHT MIT, ERCIM, Keio, Beihang, 2016.
// Please first read the full copyright statement in file COPYRIGHT.html
package org.w3c.css.properties.svg;
import org.w3c.css.properties.css.CssProperty;
import org.w3c.css.util.ApplContext;
import org.w3c.css.util.InvalidParamException;
import org.w3c.css.values.CssColor;
import org.w3c.css.values.CssExpression;
import org.w3c.css.values.CssFunction;
import org.w3c.css.values.CssIdent;
import org.w3c.css.values.CssOperator;
import org.w3c.css.values.CssTypes;
import org.w3c.css.values.CssValue;
import org.w3c.css.values.CssValueList;
import java.util.ArrayList;
/**
* @spec http://www.w3.org/TR/2011/REC-SVG11-20110816/painting.html#FillProperty
*/
public class CssFill extends org.w3c.css.properties.css.CssFill {
public static final CssIdent currentColor;
static {
currentColor = CssIdent.getIdent("currentColor");
}
/**
* Create a new CssFill
*/
public CssFill() {
value = initial;
}
/**
* Creates a new CssFill
*
* @param expression The expression for this property
* @throws org.w3c.css.util.InvalidParamException
* Expressions are incorrect
*/
public CssFill(ApplContext ac, CssExpression expression, boolean check)
throws InvalidParamException {
value = parsePaint(ac, expression, check, this);
}
public CssFill(ApplContext ac, CssExpression expression)
throws InvalidParamException {
this(ac, expression, false);
}
static CssValue parsePaint(ApplContext ac, CssExpression expression,
boolean check, CssProperty property)
throws InvalidParamException {
property.setByUser();
if (check && expression.getCount() > 3) {
throw new InvalidParamException("unrecognize", ac);
}
CssValue value = null;
CssValue val;
char op;
ArrayList values = new ArrayList<>();
boolean gotColor = false;
boolean gotFuncIRI = false;
boolean gotIccColor = false;
while (!expression.end()) {
val = expression.getValue();
op = expression.getOperator();
switch (val.getType()) {
case CssTypes.CSS_IDENT:
if (inherit.equals(val)) {
value = inherit;
if (expression.getCount() > 1) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
break;
}
if (none.equals(val)) {
if ((expression.getCount() > 1 && !gotFuncIRI) || (expression.getCount() > 2 && gotFuncIRI)) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
values.add(none);
break;
}
if (currentColor.equals(val)) {
if ((expression.getCount() > 1 && !gotFuncIRI) || (expression.getCount() > 2 && gotFuncIRI)) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
values.add(currentColor);
gotColor = true;
break;
}
if (expression.getCount() > 1) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
// else it must be a color
if (gotColor) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
CssExpression nex = new CssExpression();
nex.addValue(val);
switch (ac.getCssVersion()) {
case CSS1:
// should never happen...
throw new InvalidParamException("unrecognize", ac);
case CSS2:
case CSS21:
values.add((new org.w3c.css.properties.css21.CssColor(ac, nex, check)).getColor());
break;
case CSS3:
case CSS_2015:
case CSS:
default:
values.add((new org.w3c.css.properties.css3.CssColor(ac, nex, check)).getColor());
break;
}
gotColor = true;
break;
case CssTypes.CSS_HASH_IDENT:
if (gotColor) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
CssColor c = new CssColor();
c.setShortRGBColor(val.toString(), ac);
gotColor = true;
values.add(c);
break;
case CssTypes.CSS_COLOR:
if (gotColor) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
gotColor = true;
values.add(val);
break;
case CssTypes.CSS_URL:
if (gotColor || gotFuncIRI || !values.isEmpty()) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
gotFuncIRI = true;
values.add(val);
break;
case CssTypes.CSS_FUNCTION:
CssFunction f = (CssFunction) val;
if (gotColor || gotFuncIRI || gotIccColor) {
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
if ("icc-color".equals(f.getName())) {
values.add(parseIccColor(ac, f, check));
gotIccColor = true;
break;
}
default:
throw new InvalidParamException("value",
val.toString(),
property.getPropertyName(), ac);
}
if (op != CssOperator.SPACE) {
throw new InvalidParamException("operator",
((new Character(op)).toString()), ac);
}
expression.next();
}
if (!values.isEmpty()) {
value = (values.size() == 1) ? values.get(0) : new CssValueList(values);
}
return value;
}
// parse the icc-color function, return itself if successful otherwise throws.
static CssValue parseIccColor(ApplContext ac, CssFunction f, boolean check)
throws InvalidParamException {
boolean gitIdent = false;
CssExpression expression = f.getParameters();
CssValue val;
char op;
while (!expression.end()) {
val = expression.getValue();
op = expression.getOperator();
switch (val.getType()) {
case CssTypes.CSS_NUMBER:
if (!gitIdent) {
throw new InvalidParamException("value",
val.toString(),
f.getName(), ac);
}
break;
case CssTypes.CSS_IDENT:
if (!gitIdent) {
gitIdent = true;
break;
}
default:
throw new InvalidParamException("value",
val.toString(),
f.getName(), ac);
}
// both space and commas can happen...
if (op != CssOperator.SPACE && op != CssOperator.COMMA) {
throw new InvalidParamException("operator",
((new Character(op)).toString()), ac);
}
expression.next();
}
return f;
}
}
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