/*******************************************************************************
* This file is part of logisim-evolution.
*
* logisim-evolution is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* logisim-evolution is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with logisim-evolution. If not, see <http://www.gnu.org/licenses/>.
*
* Original code by Carl Burch (http://www.cburch.com), 2011.
* Subsequent modifications by :
* + Haute École Spécialisée Bernoise
* http://www.bfh.ch
* + Haute École du paysage, d'ingénierie et d'architecture de Genève
* http://hepia.hesge.ch/
* + Haute École d'Ingénierie et de Gestion du Canton de Vaud
* http://www.heig-vd.ch/
* The project is currently maintained by :
* + REDS Institute - HEIG-VD
* Yverdon-les-Bains, Switzerland
* http://reds.heig-vd.ch
*******************************************************************************/
package com.cburch.logisim.std.gates;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.util.ArrayList;
import com.cburch.logisim.analyze.model.Expression;
import com.cburch.logisim.analyze.model.Expressions;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.data.Value;
import com.cburch.logisim.instance.InstancePainter;
import com.cburch.logisim.instance.InstanceState;
import com.cburch.logisim.util.GraphicsUtil;
class OddParityGate extends AbstractGate {
private class XorGateHDLGeneratorFactory extends AbstractGateHDLGenerator {
@Override
public ArrayList<String> GetLogicFunction(int nr_of_inputs,
int bitwidth, boolean is_one_hot, String HDLType) {
ArrayList<String> Contents = new ArrayList<String>();
Contents.addAll(GetParity(false, nr_of_inputs, bitwidth > 1,
HDLType));
Contents.add("");
return Contents;
}
}
public static OddParityGate FACTORY = new OddParityGate();
private OddParityGate() {
super("Odd Parity", Strings.getter("oddParityComponent"));
setRectangularLabel("2k+1");
setIconNames("parityOddGate.gif");
}
@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 computeOutput(Value[] inputs, int numInputs,
InstanceState state) {
return GateFunctions.computeOddParity(inputs, numInputs);
}
@Override
protected Value getIdentity() {
return Value.FALSE;
}
@Override
public boolean HDLSupportedComponent(String HDLIdentifier,
AttributeSet attrs) {
if (MyHDLGenerator == null)
MyHDLGenerator = new XorGateHDLGeneratorFactory();
return MyHDLGenerator.HDLTargetSupported(HDLIdentifier, attrs);
}
@Override
protected void paintDinShape(InstancePainter painter, int width,
int height, int inputs) {
paintRectangular(painter, width, height);
}
@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
public void paintIconShaped(InstancePainter painter) {
paintIconRectangular(painter);
}
@Override
protected void paintShape(InstancePainter painter, int width, int height) {
paintRectangular(painter, width, height);
}
}