/* Copyright (c) 2010, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */
package com.cburch.logisim.std.gates;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import com.cburch.logisim.analyze.model.Expression;
import com.cburch.logisim.analyze.model.Expressions;
import com.cburch.logisim.data.Value;
import com.cburch.logisim.instance.InstancePainter;
import com.cburch.logisim.instance.InstanceState;
import com.cburch.logisim.util.GraphicsUtil;
import static com.cburch.logisim.util.LocaleString.*;
class OddParityGate extends AbstractGate {
public static OddParityGate FACTORY = new OddParityGate();
private OddParityGate() {
super("Odd Parity", getFromLocale("oddParityComponent"));
setRectangularLabel("2k+1");
setIconNames("parityOddGate.svg");
}
@Override
public void paintIconShaped(InstancePainter painter) {
paintIconRectangular(painter);
}
@Override
public void paintIconRectangular(InstancePainter painter) {
Graphics g = painter.getGraphics();
g.setColor(Color.black);
g.drawRect(1, 2, 16, 16);
Font old = g.getFont();
g.setFont(old.deriveFont(9.0f));
GraphicsUtil.drawCenteredText(g, "2k", 9, 6);
GraphicsUtil.drawCenteredText(g, "+1", 9, 13);
g.setFont(old);
}
@Override
protected void paintShape(InstancePainter painter, int width, int height) {
paintRectangular(painter, width, height);
}
@Override
protected void paintDinShape(InstancePainter painter, int width, int height,
int inputs) {
paintRectangular(painter, width, height);
}
@Override
protected Value computeOutput(Value[] inputs, int numInputs,
InstanceState state) {
return GateFunctions.computeOddParity(inputs, numInputs);
}
@Override
protected Expression computeExpression(Expression[] inputs, int numInputs) {
Expression ret = inputs[0];
for (int i = 1; i < numInputs; i++) {
ret = Expressions.xor(ret, inputs[i]);
}
return ret;
}
@Override
protected Value getIdentity() { return Value.FALSE; }
}