/* 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.Color;
import java.awt.Graphics2D;
import javax.swing.Icon;
import com.cburch.logisim.circuit.Wire;
import com.cburch.logisim.data.Attribute;
import com.cburch.logisim.data.AttributeOption;
import com.cburch.logisim.data.AttributeSet;
import com.cburch.logisim.data.Attributes;
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 com.cburch.logisim.tools.key.BitWidthConfigurator;
import com.cburch.logisim.util.GraphicsUtil;
import com.cburch.logisim.util.Icons;
public class Transistor extends InstanceFactory {
static final AttributeOption TYPE_P
= new AttributeOption("p", Strings.getter("transistorTypeP"));
static final AttributeOption TYPE_N
= new AttributeOption("n", Strings.getter("transistorTypeN"));
static final Attribute<AttributeOption> ATTR_TYPE
= Attributes.forOption("type", Strings.getter("transistorTypeAttr"),
new AttributeOption[] { TYPE_P, TYPE_N });
static final int OUTPUT = 0;
static final int INPUT = 1;
static final int GATE = 2;
private static final Icon ICON_N = Icons.getIcon("trans1.gif");
private static final Icon ICON_P = Icons.getIcon("trans0.gif");
public Transistor() {
super("Transistor", Strings.getter("transistorComponent"));
setAttributes(
new Attribute[] { ATTR_TYPE, StdAttr.FACING,
Wiring.ATTR_GATE, StdAttr.WIDTH },
new Object[] { TYPE_P, Direction.EAST,
Wiring.GATE_TOP_LEFT, BitWidth.ONE });
setFacingAttribute(StdAttr.FACING);
setKeyConfigurator(new BitWidthConfigurator(StdAttr.WIDTH));
}
@Override
protected void configureNewInstance(Instance instance) {
instance.addAttributeListener();
updatePorts(instance);
}
@Override
protected void instanceAttributeChanged(Instance instance, Attribute<?> attr) {
if (attr == StdAttr.FACING || attr == Wiring.ATTR_GATE) {
instance.recomputeBounds();
updatePorts(instance);
} else if (attr == StdAttr.WIDTH) {
updatePorts(instance);
} else if (attr == ATTR_TYPE) {
instance.fireInvalidated();
}
}
private void updatePorts(Instance instance) {
Direction facing = instance.getAttributeValue(StdAttr.FACING);
int dx = 0;
int dy = 0;
if (facing == Direction.NORTH) {
dy = 1;
} else if (facing == Direction.EAST) {
dx = -1;
} else if (facing == Direction.SOUTH) {
dy = -1;
} else if (facing == Direction.WEST) {
dx = 1;
}
Object powerLoc = instance.getAttributeValue(Wiring.ATTR_GATE);
boolean flip = (facing == Direction.SOUTH || facing == Direction.WEST)
== (powerLoc == Wiring.GATE_TOP_LEFT);
Port[] ports = new Port[3];
ports[OUTPUT] = new Port(0, 0, Port.OUTPUT, StdAttr.WIDTH);
ports[INPUT] = new Port(40 * dx, 40 * dy, Port.INPUT, StdAttr.WIDTH);
if (flip) {
ports[GATE] = new Port(20 * (dx + dy), 20 * (-dx + dy), Port.INPUT, 1);
} else {
ports[GATE] = new Port(20 * (dx - dy), 20 * (dx + dy), Port.INPUT, 1);
}
instance.setPorts(ports);
}
@Override
public Bounds getOffsetBounds(AttributeSet attrs) {
Direction facing = attrs.getValue(StdAttr.FACING);
Object gateLoc = attrs.getValue(Wiring.ATTR_GATE);
int delta = gateLoc == Wiring.GATE_TOP_LEFT ? -20 : 0;
if (facing == Direction.NORTH) {
return Bounds.create(delta, 0, 20, 40);
} else if (facing == Direction.SOUTH) {
return Bounds.create(delta, -40, 20, 40);
} else if (facing == Direction.WEST) {
return Bounds.create(0, delta, 40, 20);
} else { // facing == Direction.EAST
return Bounds.create(-40, delta, 40, 20);
}
}
@Override
public boolean contains(Location loc, AttributeSet attrs) {
if (super.contains(loc, attrs)) {
Direction facing = attrs.getValue(StdAttr.FACING);
Location center = Location.create(0, 0).translate(facing, -20);
return center.manhattanDistanceTo(loc) < 24;
} else {
return false;
}
}
@Override
public void propagate(InstanceState state) {
state.setPort(OUTPUT, computeOutput(state), 1);
}
private Value computeOutput(InstanceState state) {
BitWidth width = state.getAttributeValue(StdAttr.WIDTH);
Value gate = state.getPort(GATE);
Value input = state.getPort(INPUT);
Value desired = state.getAttributeValue(ATTR_TYPE) == TYPE_P
? Value.FALSE : Value.TRUE;
if (!gate.isFullyDefined()) {
if (input.isFullyDefined()) {
return Value.createError(width);
} else {
Value[] v = input.getAll();
for (int i = 0; i < v.length; i++) {
if (v[i] != Value.UNKNOWN) {
v[i] = Value.ERROR;
}
}
return Value.create(v);
}
} else if (gate != desired) {
return Value.createUnknown(width);
} else {
return input;
}
}
@Override
public void paintIcon(InstancePainter painter) {
Object type = painter.getAttributeValue(ATTR_TYPE);
Icon icon = type == TYPE_N ? ICON_N : ICON_P;
icon.paintIcon(painter.getDestination(), painter.getGraphics(), 2, 2);
}
@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) {
Object type = painter.getAttributeValue(ATTR_TYPE);
Object powerLoc = painter.getAttributeValue(Wiring.ATTR_GATE);
Direction from = painter.getAttributeValue(StdAttr.FACING);
Direction facing = painter.getAttributeValue(StdAttr.FACING);
boolean flip = (facing == Direction.SOUTH || facing == Direction.WEST)
== (powerLoc == Wiring.GATE_TOP_LEFT);
int degrees = Direction.EAST.toDegrees() - from.toDegrees();
double radians = Math.toRadians((degrees + 360) % 360);
int m = flip ? 1 : -1;
Graphics2D g = (Graphics2D) painter.getGraphics();
Location loc = painter.getLocation();
g.translate(loc.getX(), loc.getY());
g.rotate(radians);
Color gate;
Color input;
Color output;
Color platform;
if (!isGhost && painter.getShowState()) {
gate = painter.getPort(GATE).getColor();
input = painter.getPort(INPUT).getColor();
output = painter.getPort(OUTPUT).getColor();
Value out = computeOutput(painter);
platform = out.isUnknown() ? Value.UNKNOWN.getColor() : out.getColor();
} else {
Color base = g.getColor();
gate = base;
input = base;
output = base;
platform = base;
}
// input and output lines
GraphicsUtil.switchToWidth(g, Wire.WIDTH);
g.setColor(output);
g.drawLine(0, 0, -11, 0);
g.drawLine(-11, m * 7, -11, 0);
g.setColor(input);
g.drawLine(-40, 0, -29, 0);
g.drawLine(-29, m * 7, -29, 0);
// gate line
g.setColor(gate);
if (type == TYPE_P) {
g.drawLine(-20, m * 20, -20, m * 15);
GraphicsUtil.switchToWidth(g, 1);
g.drawOval(-22, m * 12 - 2, 4, 4);
} else {
g.drawLine(-20, m * 20, -20, m * 11);
GraphicsUtil.switchToWidth(g, 1);
}
// draw platforms
g.drawLine(-10, m * 10, -30, m * 10); // gate platform
g.setColor(platform);
g.drawLine(-9, m * 8, -31, m * 8); // input/output platform
// arrow (same color as platform)
g.drawLine(-21, m * 6, -18, m * 3);
g.drawLine(-21, 0, -18, m * 3);
g.rotate(-radians);
g.translate(-loc.getX(), -loc.getY());
}
}