129 lines
4 KiB
JavaScript
Executable file
129 lines
4 KiB
JavaScript
Executable file
import CircuitElement from "../circuitElement";
|
|
import Node, { findNode } from "../node";
|
|
import simulationArea from "../simulationArea";
|
|
import { correctWidth, lineTo, moveTo, arc } from "../canvasApi";
|
|
import { changeInputSize } from "../modules";
|
|
/**
|
|
* @class
|
|
* TriState
|
|
* @extends CircuitElement
|
|
* @param {number} x - x coordinate of element.
|
|
* @param {number} y - y coordinate of element.
|
|
* @param {Scope=} scope - Cirucit on which element is drawn
|
|
* @param {string=} dir - direction of element
|
|
* @param {number=} bitWidth - bit width per node.
|
|
* @category modules
|
|
*/
|
|
import { colors } from "../themer/themer";
|
|
|
|
export default class TriState extends CircuitElement {
|
|
constructor(x, y, scope = globalScope, dir = "RIGHT", bitWidth = 1) {
|
|
super(x, y, scope, dir, bitWidth);
|
|
/* this is done in this.baseSetup() now
|
|
this.scope['TriState'].push(this);
|
|
*/
|
|
this.rectangleObject = false;
|
|
this.setDimensions(15, 15);
|
|
|
|
this.inp1 = new Node(-10, 0, 0, this);
|
|
this.output1 = new Node(20, 0, 1, this);
|
|
this.state = new Node(0, 0, 0, this, 1, "Enable");
|
|
}
|
|
|
|
// TriState.prototype.propagationDelay=10000;
|
|
|
|
/**
|
|
* @memberof TriState
|
|
* fn to create save Json Data of object
|
|
* @return {JSON}
|
|
*/
|
|
customSave() {
|
|
const data = {
|
|
constructorParamaters: [this.direction, this.bitWidth],
|
|
nodes: {
|
|
output1: findNode(this.output1),
|
|
inp1: findNode(this.inp1),
|
|
state: findNode(this.state),
|
|
},
|
|
};
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @memberof TriState
|
|
* function to change bitwidth of the element
|
|
* @param {number} bitWidth - new bitwidth
|
|
*/
|
|
newBitWidth(bitWidth) {
|
|
this.inp1.bitWidth = bitWidth;
|
|
this.output1.bitWidth = bitWidth;
|
|
this.bitWidth = bitWidth;
|
|
}
|
|
|
|
/**
|
|
* @memberof TriState
|
|
* resolve output values based on inputData
|
|
*/
|
|
resolve() {
|
|
if (this.isResolvable() === false) {
|
|
return;
|
|
}
|
|
|
|
if (this.state.value === 1) {
|
|
if (this.output1.value !== this.inp1.value) {
|
|
this.output1.value = this.inp1.value; // >>>0)<<(32-this.bitWidth))>>>(32-this.bitWidth);
|
|
simulationArea.simulationQueue.add(this.output1);
|
|
}
|
|
simulationArea.contentionPending.clean(this);
|
|
} else if (
|
|
this.output1.value !== undefined &&
|
|
!simulationArea.contentionPending.contains(this)
|
|
) {
|
|
this.output1.value = undefined;
|
|
simulationArea.simulationQueue.add(this.output1);
|
|
}
|
|
simulationArea.contentionPending.clean(this);
|
|
}
|
|
|
|
/**
|
|
* @memberof TriState
|
|
* function to draw element
|
|
*/
|
|
customDraw() {
|
|
var ctx = simulationArea.context;
|
|
ctx.strokeStyle = colors["stroke"];
|
|
ctx.lineWidth = correctWidth(3);
|
|
const xx = this.x;
|
|
const yy = this.y;
|
|
ctx.beginPath();
|
|
ctx.fillStyle = colors["fill"];
|
|
moveTo(ctx, -10, -15, xx, yy, this.direction);
|
|
lineTo(ctx, 20, 0, xx, yy, this.direction);
|
|
lineTo(ctx, -10, 15, xx, yy, this.direction);
|
|
ctx.closePath();
|
|
if (
|
|
(this.hover && !simulationArea.shiftDown) ||
|
|
simulationArea.lastSelected === this ||
|
|
simulationArea.multipleObjectSelections.contains(this)
|
|
)
|
|
ctx.fillStyle = colors["hover_select"];
|
|
ctx.fill();
|
|
ctx.stroke();
|
|
}
|
|
|
|
generateVerilog() {
|
|
return `assign ${this.output1.verilogLabel} = (${this.state.verilogLabel}!=0) ? ${this.inp1.verilogLabel} : ${this.inp1.bitWidth}'b?;`;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @memberof TriState
|
|
* Help Tip
|
|
* @type {string}
|
|
* @category modules
|
|
*/
|
|
TriState.prototype.tooltipText =
|
|
"TriState ToolTip : Effectively removes the output from the circuit.";
|
|
TriState.prototype.helplink =
|
|
"https://docs.circuitverse.org/#/miscellaneous?id=tri-state-buffer";
|
|
TriState.prototype.objectType = "TriState";
|