Package com.cburch.logisim.std.wiring

Source Code of com.cburch.logisim.std.wiring.Power

/* Copyright (c) 2011, Carl Burch. License information is located in the
* com.cburch.logisim.Main source code and at www.cburch.com/logisim/. */

/**
* Based on PUCTools (v0.9 beta) by CRC - PUC - Minas (pucmg.crc at gmail.com)
*/

package com.cburch.logisim.std.wiring;

import java.awt.Graphics2D;

import com.cburch.logisim.tools.key.BitWidthConfigurator;
import com.cburch.logisim.util.GraphicsUtil;

import com.cburch.logisim.circuit.Wire;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.data.BitWidth;
import com.cburch.logisim.data.Bounds;
import com.cburch.logisim.data.Direction;
import com.cburch.logisim.data.Location;
import com.cburch.logisim.data.Value;
import com.cburch.logisim.instance.Instance;
import com.cburch.logisim.instance.InstanceFactory;
import com.cburch.logisim.instance.InstancePainter;
import com.cburch.logisim.instance.InstanceState;
import com.cburch.logisim.instance.Port;
import com.cburch.logisim.instance.StdAttr;
import static com.cburch.logisim.util.LocaleString.*;

public class Power extends InstanceFactory {
    public Power() {
        super("Power", getFromLocale("powerComponent"));
        setIconName("power.svg");
        setAttributes(new Attribute[] { StdAttr.FACING, StdAttr.WIDTH },
                new Object[] { Direction.NORTH, BitWidth.ONE });
        setFacingAttribute(StdAttr.FACING);
        setKeyConfigurator(new BitWidthConfigurator(StdAttr.WIDTH));
        setPorts(new Port[] { new Port(0, 0, Port.OUTPUT, StdAttr.WIDTH) });
    }

    @Override
    protected void configureNewInstance(Instance instance) {
        instance.addAttributeListener();
    }

    @Override
    protected void instanceAttributeChanged(Instance instance, Attribute<?> attr) {
        if (attr == StdAttr.FACING) {
            instance.recomputeBounds();
        }
    }

    @Override
    public Bounds getOffsetBounds(AttributeSet attrs) {
        return Bounds.create(0, -8, 15, 16)
            .rotate(Direction.EAST, attrs.getValue(StdAttr.FACING), 0, 0);
    }

    @Override
    public void propagate(InstanceState state) {
        BitWidth width = state.getAttributeValue(StdAttr.WIDTH);
        state.setPort(0, Value.repeat(Value.TRUE, width.getWidth()), 1);
    }

    @Override
    public void paintInstance(InstancePainter painter) {
        drawInstance(painter, false);
        painter.drawPorts();
    }

    @Override
    public void paintGhost(InstancePainter painter) {
        drawInstance(painter, true);
    }

    private void drawInstance(InstancePainter painter, boolean isGhost) {
        Graphics2D g = (Graphics2D) painter.getGraphics().create();
        Location loc = painter.getLocation();
        g.translate(loc.getX(), loc.getY());

        Direction from = painter.getAttributeValue(StdAttr.FACING);
        int degrees = Direction.EAST.toDegrees() - from.toDegrees();
        double radians = Math.toRadians((degrees + 360) % 360);
        g.rotate(radians);

        GraphicsUtil.switchToWidth(g, Wire.WIDTH);
        if (!isGhost && painter.getShowState()) {
            g.setColor(painter.getPort(0).getColor());
        }
        g.drawLine(0, 0, 5, 0);

        GraphicsUtil.switchToWidth(g, 1);
        if (!isGhost && painter.shouldDrawColor()) {
            BitWidth width = painter.getAttributeValue(StdAttr.WIDTH);
            g.setColor(Value.repeat(Value.TRUE, width.getWidth()).getColor());
        }
        g.drawPolygon(new int[] { 6, 14, 6 }, new int[] { -8, 0, 8 }, 3);

        g.dispose();
    }
}
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