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package com.metaweb.lessen.tokens;
import com.metaweb.lessen.expr.OperatorCall;
public class ComponentColor extends Color {
protected NumericToken _r, _g, _b, _a;
public ComponentColor(
int start, int end, String text,
NumericToken r,
NumericToken g,
NumericToken b,
NumericToken a
) {
super(start, end, text);
_r = r; _g = g; _b = b; _a = a;
}
@Override
public int getA() {
return tokenToInt(_a);
}
@Override
public int getB() {
return tokenToInt(_b);
}
@Override
public int getG() {
return tokenToInt(_g);
}
@Override
public int getR() {
return tokenToInt(_r);
}
protected int tokenToInt(NumericToken t) {
if (t == null) {
return -1;
} else if (t.type == Type.Percentage) {
return t.n.intValue() * 255 / 100;
} else if (t.n.doubleValue() > 1) {
return t.n.intValue();
} else {
return (int) (255 * t.n.doubleValue());
}
}
public Color performOperation(String op, Color color) {
if (color instanceof ComponentColor && (op.endsWith("+") || op.equals("-"))) {
ComponentColor color2 = (ComponentColor) color;
NumericToken r = limit(performNumericOperation(op, _r, color2._r));
NumericToken g = limit(performNumericOperation(op, _g, color2._g));
NumericToken b = limit(performNumericOperation(op, _b, color2._b));
NumericToken a = limit(performNumericOperation(op, _a, color2._a));
return createColor(r, g, b, a);
}
return super.performOperation(op, color);
}
@Override
public Color performOperation(String op, Number n) {
if (op.equals("*") || op.equals("/")) {
double d = n.doubleValue();
NumericToken r = limit(performNumericOperation(op, _r, d));
NumericToken g = limit(performNumericOperation(op, _g, d));
NumericToken b = limit(performNumericOperation(op, _b, d));
NumericToken a = limit(performNumericOperation(op, _a, d));
return createColor(r, g, b, a);
}
return super.performOperation(op, n);
}
protected NumericToken performNumericOperation(String op, NumericToken tLeft, NumericToken tRight) {
if (tLeft == null) {
return tRight;
} else if (tRight == null) {
return tLeft;
} else {
return OperatorCall.performNumericOperation(op, tLeft, tRight);
}
}
protected NumericToken performNumericOperation(String op, NumericToken leftT, double d) {
if (leftT != null) {
return OperatorCall.performNumericOperation(op, leftT, d);
}
return null;
}
protected ComponentColor createColor(NumericToken r, NumericToken g, NumericToken b, NumericToken a) {
StringBuffer sb = new StringBuffer();
sb.append(a != null ? "rgba(" : "rgb(");
sb.append(r != null ? r.getCleanText() : "ERROR"); sb.append(", ");
sb.append(g != null ? g.getCleanText() : "ERROR"); sb.append(", ");
sb.append(b != null ? b.getCleanText() : "ERROR");
if (a != null) {
sb.append(", ");
sb.append(a.getCleanText());
}
sb.append(")");
return new ComponentColor(
start,
end,
sb.toString(),
r,
g,
b,
a
);
}
protected NumericToken limit(NumericToken t) {
if (t != null) {
double d = t.n.doubleValue();
if (t.type == Type.Percentage) {
if (d < 0 || d > 100) {
return OperatorCall.makePercentageToken(t, Math.max(0, Math.min(100, d)));
}
} else {
if (d < 0 || d > 255) {
return OperatorCall.makeNumberToken(t, Math.max(0, Math.min(255, d)));
}
}
}
return t;
}
}
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