/* 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.Graphics;
import java.awt.Graphics2D;
import javax.swing.Icon;
import com.cburch.logisim.comp.ComponentFactory;
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.file.Options;
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.WireRepair;
import com.cburch.logisim.tools.WireRepairData;
import com.cburch.logisim.tools.key.BitWidthConfigurator;
import com.cburch.logisim.util.GraphicsUtil;
import com.cburch.logisim.util.Icons;
import static com.cburch.logisim.util.LocaleString.*;
class ControlledBuffer extends InstanceFactory {
private static final AttributeOption RIGHT_HANDED
= new AttributeOption("right", getFromLocale("controlledRightHanded"));
private static final AttributeOption LEFT_HANDED
= new AttributeOption("left", getFromLocale("controlledLeftHanded"));
private static final Attribute<AttributeOption> ATTR_CONTROL
= Attributes.forOption("control", getFromLocale("controlledControlOption"),
new AttributeOption[] { RIGHT_HANDED, LEFT_HANDED });
public static ComponentFactory FACTORY_BUFFER = new ControlledBuffer(false);
public static ComponentFactory FACTORY_INVERTER = new ControlledBuffer(true);
private static final Icon ICON_BUFFER = Icons.getIcon("controlledBuffer.svg");
private static final Icon ICON_INVERTER = Icons.getIcon("controlledInverter.svg");
private boolean isInverter;
private ControlledBuffer(boolean isInverter) {
super(isInverter ? "Controlled Inverter" : "Controlled Buffer",
isInverter ? getFromLocale("controlledInverterComponent")
: getFromLocale("controlledBufferComponent"));
this.isInverter = isInverter;
if (isInverter) {
setAttributes(new Attribute[] { StdAttr.FACING, StdAttr.WIDTH,
NotGate.ATTR_SIZE, ATTR_CONTROL,
StdAttr.LABEL, StdAttr.LABEL_FONT },
new Object[] { Direction.EAST, BitWidth.ONE,
NotGate.SIZE_WIDE, RIGHT_HANDED,
"", StdAttr.DEFAULT_LABEL_FONT });
} else {
setAttributes(new Attribute[] {
StdAttr.FACING, StdAttr.WIDTH, ATTR_CONTROL,
StdAttr.LABEL, StdAttr.LABEL_FONT },
new Object[] { Direction.EAST, BitWidth.ONE, RIGHT_HANDED,
"", StdAttr.DEFAULT_LABEL_FONT });
}
setFacingAttribute(StdAttr.FACING);
setKeyConfigurator(new BitWidthConfigurator(StdAttr.WIDTH));
}
@Override
public Bounds getOffsetBounds(AttributeSet attrs) {
int w = 20;
if (isInverter &&
!NotGate.SIZE_NARROW.equals(attrs.getValue(NotGate.ATTR_SIZE))) {
w = 30;
}
Direction facing = attrs.getValue(StdAttr.FACING);
if (facing == Direction.NORTH) {
return Bounds.create(-10, 0, 20, w);
}
if (facing == Direction.SOUTH) {
return Bounds.create(-10, -w, 20, w);
}
if (facing == Direction.WEST) {
return Bounds.create(0, -10, w, 20);
}
return Bounds.create(-w, -10, w, 20);
}
//
// graphics methods
//
@Override
public void paintGhost(InstancePainter painter) {
paintShape(painter);
}
@Override
public void paintIcon(InstancePainter painter) {
Graphics g = painter.getGraphics();
Icon icon = isInverter ? ICON_INVERTER : ICON_BUFFER;
if (icon != null) {
icon.paintIcon(painter.getDestination(), g, 2, 2);
} else {
int x = isInverter ? 0 : 2;
g.setColor(Color.BLACK);
int[] xp = new int[] { x + 15, x + 1, x + 1, x + 15 };
int[] yp = new int[] { 10, 3, 17, 10 };
g.drawPolyline(xp, yp, 4);
if (isInverter) {
g.drawOval(x + 13, 8, 4, 4);
}
g.setColor(Value.FALSE_COLOR);
g.drawLine(x + 8, 14, x + 8, 18);
}
}
@Override
public void paintInstance(InstancePainter painter) {
Direction face = painter.getAttributeValue(StdAttr.FACING);
Graphics g = painter.getGraphics();
// draw control wire
GraphicsUtil.switchToWidth(g, 3);
Location pt0 = painter.getInstance().getPortLocation(2);
Location pt1;
if (painter.getAttributeValue(ATTR_CONTROL) == LEFT_HANDED) {
pt1 = pt0.translate(face, 0, 6);
} else {
pt1 = pt0.translate(face, 0, -6);
}
if (painter.getShowState()) {
g.setColor(painter.getPort(2).getColor());
}
g.drawLine(pt0.getX(), pt0.getY(), pt1.getX(), pt1.getY());
// draw triangle
g.setColor(Color.BLACK);
paintShape(painter);
// draw input and output pins
if (!painter.isPrintView()) {
painter.drawPort(0);
painter.drawPort(1);
}
painter.drawLabel();
}
private void paintShape(InstancePainter painter) {
Direction facing = painter.getAttributeValue(StdAttr.FACING);
Location loc = painter.getLocation();
int x = loc.getX();
int y = loc.getY();
double rotate = 0.0;
Graphics g = painter.getGraphics();
g.translate(x, y);
if (facing != Direction.EAST && g instanceof Graphics2D) {
rotate = -facing.toRadians();
((Graphics2D) g).rotate(rotate);
}
if (isInverter) {
PainterShaped.paintNot(painter);
} else {
GraphicsUtil.switchToWidth(g, 2);
int d = isInverter ? 10 : 0;
int[] xp = new int[] { -d, -19 - d, -19 - d, -d };
int[] yp = new int[] { 0, -7, 7, 0 };
g.drawPolyline(xp, yp, 4);
// if (isInverter) g.drawOval(-9, -4, 9, 9);
}
if (rotate != 0.0) {
((Graphics2D) g).rotate(-rotate);
}
g.translate(-x, -y);
}
//
// methods for instances
//
@Override
protected void configureNewInstance(Instance instance) {
instance.addAttributeListener();
configurePorts(instance);
NotGate.configureLabel(instance, false, instance.getPortLocation(2));
}
@Override
protected void instanceAttributeChanged(Instance instance, Attribute<?> attr) {
if (attr == StdAttr.FACING || attr == NotGate.ATTR_SIZE) {
instance.recomputeBounds();
configurePorts(instance);
NotGate.configureLabel(instance, false, instance.getPortLocation(2));
} else if (attr == ATTR_CONTROL) {
configurePorts(instance);
NotGate.configureLabel(instance, false, instance.getPortLocation(2));
}
}
private void configurePorts(Instance instance) {
Direction facing = instance.getAttributeValue(StdAttr.FACING);
Bounds bds = getOffsetBounds(instance.getAttributeSet());
int d = Math.max(bds.getWidth(), bds.getHeight()) - 20;
Location loc0 = Location.create(0, 0);
Location loc1 = loc0.translate(facing.reverse(), 20 + d);
Location loc2;
if (instance.getAttributeValue(ATTR_CONTROL) == LEFT_HANDED) {
loc2 = loc0.translate(facing.reverse(), 10 + d, 10);
} else {
loc2 = loc0.translate(facing.reverse(), 10 + d, -10);
}
Port[] ports = new Port[3];
ports[0] = new Port(0, 0, Port.OUTPUT, StdAttr.WIDTH);
ports[1] = new Port(loc1.getX(), loc1.getY(), Port.INPUT, StdAttr.WIDTH);
ports[2] = new Port(loc2.getX(), loc2.getY(), Port.INPUT, 1);
instance.setPorts(ports);
}
@Override
public void propagate(InstanceState state) {
Value control = state.getPort(2);
BitWidth width = state.getAttributeValue(StdAttr.WIDTH);
if (control == Value.TRUE) {
Value in = state.getPort(1);
state.setPort(0, isInverter ? in.not() : in, GateAttributes.DELAY);
} else if (control == Value.ERROR || control == Value.UNKNOWN) {
state.setPort(0, Value.createError(width), GateAttributes.DELAY);
} else {
Value out;
if (control == Value.UNKNOWN || control == Value.NIL) {
AttributeSet opts = state.getProject().getOptions().getAttributeSet();
if (opts.getValue(Options.ATTR_GATE_UNDEFINED)
.equals(Options.GATE_UNDEFINED_ERROR)) {
out = Value.createError(width);
} else {
out = Value.createUnknown(width);
}
} else {
out = Value.createUnknown(width);
}
state.setPort(0, out, GateAttributes.DELAY);
}
}
@Override
public Object getInstanceFeature(final Instance instance, Object key) {
if (key == WireRepair.class) {
return new WireRepair() {
@Override
public boolean shouldRepairWire(WireRepairData data) {
Location port2 = instance.getPortLocation(2);
return data.getPoint().equals(port2);
}
};
}
return super.getInstanceFeature(instance, key);
}
}