public interface StdAttr { Attribute<Direction> FACING = Attributes.forDirection("facing", Strings.getter("stdFacingAttr")); Attribute<BitWidth> WIDTH = Attributes.forBitWidth("width", Strings.getter("stdDataWidthAttr")); AttributeOption TRIG_RISING = new AttributeOption("rising", Strings.getter("stdTriggerRising")); AttributeOption TRIG_FALLING = new AttributeOption("falling", Strings.getter("stdTriggerFalling")); AttributeOption TRIG_HIGH = new AttributeOption("high", Strings.getter("stdTriggerHigh")); AttributeOption TRIG_LOW = new AttributeOption("low", Strings.getter("stdTriggerLow")); Attribute<AttributeOption> TRIGGER = Attributes.forOption( "trigger", Strings.getter("stdTriggerAttr"), new AttributeOption[] {TRIG_RISING, TRIG_FALLING, TRIG_HIGH, TRIG_LOW}); Attribute<AttributeOption> EDGE_TRIGGER = Attributes.forOption( "trigger", Strings.getter("stdTriggerAttr"), new AttributeOption[] {TRIG_RISING, TRIG_FALLING}); Attribute<String> LABEL = Attributes.forString("label", Strings.getter("stdLabelAttr")); Attribute<Font> LABEL_FONT = Attributes.forFont("labelfont", Strings.getter("stdLabelFontAttr")); Font DEFAULT_LABEL_FONT = new Font("SansSerif", Font.PLAIN, 12); }
public class BitExtender extends InstanceFactory { private static final Attribute<BitWidth> ATTR_IN_WIDTH = Attributes.forBitWidth("in_width", Strings.getter("extenderInAttr")); private static final Attribute<BitWidth> ATTR_OUT_WIDTH = Attributes.forBitWidth("out_width", Strings.getter("extenderOutAttr")); static final Attribute<AttributeOption> ATTR_TYPE = Attributes.forOption( "type", Strings.getter("extenderTypeAttr"), new AttributeOption[] { new AttributeOption("zero", "zero", Strings.getter("extenderZeroType")), new AttributeOption("one", "one", Strings.getter("extenderOneType")), new AttributeOption("sign", "sign", Strings.getter("extenderSignType")), new AttributeOption("input", "input", Strings.getter("extenderInputType")), }); public static final BitExtender FACTORY = new BitExtender(); public BitExtender() { super("Bit Extender", Strings.getter("extenderComponent")); setIconName("extender.gif"); setAttributes( new Attribute[] {ATTR_IN_WIDTH, ATTR_OUT_WIDTH, ATTR_TYPE}, new Object[] {BitWidth.create(8), BitWidth.create(16), ATTR_TYPE.parse("sign")}); setFacingAttribute(StdAttr.FACING); setKeyConfigurator( JoinedConfigurator.create( new BitWidthConfigurator(ATTR_OUT_WIDTH), new BitWidthConfigurator(ATTR_IN_WIDTH, 1, Value.MAX_WIDTH, 0))); setOffsetBounds(Bounds.create(-40, -20, 40, 40)); } // // methods for instances // @Override protected void configureNewInstance(Instance instance) { configurePorts(instance); instance.addAttributeListener(); } private void configurePorts(Instance instance) { Port p0 = new Port(0, 0, Port.OUTPUT, ATTR_OUT_WIDTH); Port p1 = new Port(-40, 0, Port.INPUT, ATTR_IN_WIDTH); String type = getType(instance.getAttributeSet()); if (type.equals("input")) { instance.setPorts(new Port[] {p0, p1, new Port(-20, -20, Port.INPUT, 1)}); } else { instance.setPorts(new Port[] {p0, p1}); } } private String getType(AttributeSet attrs) { AttributeOption topt = attrs.getValue(ATTR_TYPE); return (String) topt.getValue(); } @Override public boolean HDLSupportedComponent(String HDLIdentifier, AttributeSet attrs, char Vendor) { if (MyHDLGenerator == null) MyHDLGenerator = new BitExtenderHDLGeneratorFactory(); return MyHDLGenerator.HDLTargetSupported(HDLIdentifier, attrs, Vendor); } @Override protected void instanceAttributeChanged(Instance instance, Attribute<?> attr) { if (attr == ATTR_TYPE) { configurePorts(instance); instance.fireInvalidated(); } else { instance.fireInvalidated(); } } // // graphics methods // @Override public void paintInstance(InstancePainter painter) { Graphics g = painter.getGraphics(); FontMetrics fm = g.getFontMetrics(); int asc = fm.getAscent(); painter.drawBounds(); String s0; String type = getType(painter.getAttributeSet()); if (type.equals("zero")) s0 = Strings.get("extenderZeroLabel"); else if (type.equals("one")) s0 = Strings.get("extenderOneLabel"); else if (type.equals("sign")) s0 = Strings.get("extenderSignLabel"); else if (type.equals("input")) s0 = Strings.get("extenderInputLabel"); else s0 = "???"; // should never happen String s1 = Strings.get("extenderMainLabel"); Bounds bds = painter.getBounds(); int x = bds.getX() + bds.getWidth() / 2; int y0 = bds.getY() + (bds.getHeight() / 2 + asc) / 2; int y1 = bds.getY() + (3 * bds.getHeight() / 2 + asc) / 2; GraphicsUtil.drawText(g, s0, x, y0, GraphicsUtil.H_CENTER, GraphicsUtil.V_BASELINE); GraphicsUtil.drawText(g, s1, x, y1, GraphicsUtil.H_CENTER, GraphicsUtil.V_BASELINE); BitWidth w0 = painter.getAttributeValue(ATTR_OUT_WIDTH); BitWidth w1 = painter.getAttributeValue(ATTR_IN_WIDTH); painter.drawPort(0, "" + w0.getWidth(), Direction.WEST); painter.drawPort(1, "" + w1.getWidth(), Direction.EAST); if (type.equals("input")) painter.drawPort(2); } @Override public void propagate(InstanceState state) { Value in = state.getPortValue(1); BitWidth wout = state.getAttributeValue(ATTR_OUT_WIDTH); String type = getType(state.getAttributeSet()); Value extend; if (type.equals("one")) { extend = Value.TRUE; } else if (type.equals("sign")) { int win = in.getWidth(); extend = win > 0 ? in.get(win - 1) : Value.ERROR; } else if (type.equals("input")) { extend = state.getPortValue(2); if (extend.getWidth() != 1) extend = Value.ERROR; } else { extend = Value.FALSE; } Value out = in.extendWidth(wout.getWidth(), extend); state.setPort(0, out, 1); } }