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#include "Gate_BUFFER.h"
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Gate_BUFFER::Gate_BUFFER(int gateID, gType type, int numInputs, int gateLevel)
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: Gate_BASE(gateID, type, numInputs, gateLevel)
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{
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// Override base gate to limit to one I/O point only
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this->xSize = BASE_GATE_SIZE_X;
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this->ySize = BASE_GATE_SIZE_Y + ADDITONAL_INPUTS;
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QPointF point = QPointF(0, this->ySize / 2);
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this->inputPoints[0] = point;
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QPointF scenePoint = QPointF(this->scenePos().x(), this->scenePos().y() + this->ySize / 2);
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this->gateInputPoints[0] = scenePoint;
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outputPoint = QPointF(this->xSize, this->ySize / 2);
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gateOutputPoint = QPointF(this->scenePos().x() + this->xSize, this->scenePos().y() + this->ySize / 2);
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textRect = QRectF(BORDER_OFFSET, BORDER_OFFSET, xSize - BORDER_OFFSET * 3, ySize - BORDER_OFFSET * 2);
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}
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void Gate_BUFFER::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
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{
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Q_UNUSED(widget);
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Q_UNUSED(option);
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#ifdef _DEBUG
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painter->save();
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painter->setPen((auxSelected) ? debugSelectedPen : debugPen);
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painter->setBrush(debugBrush);
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painter->drawRect(0, 0, xSize, ySize);
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painter->drawRect(textRect);
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if (numInputs != 1) {
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painter->setPen(debugErrorPen);
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painter->drawLine(0, 0, xSize, ySize);
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painter->drawLine(xSize, 0, 0, ySize);
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}
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painter->restore();
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#endif
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if (auxSelected) painter->setPen(highlightedPen);
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else painter->setPen(defaultPen);
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painter->setBrush(defaultBrush);
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// Draw circles indicating I/O points
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painter->drawEllipse(inputPoints[0], INPUT_CIRCLE_SIZE, INPUT_CIRCLE_SIZE);
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painter->drawEllipse(outputPoint, INPUT_CIRCLE_SIZE, INPUT_CIRCLE_SIZE);
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// Draw gate outline
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QPointF points[3] = {
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QPointF(BORDER_OFFSET, BORDER_OFFSET),
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QPointF(xSize - BORDER_OFFSET, ySize / 2),
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QPointF(BORDER_OFFSET, ySize - BORDER_OFFSET)
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};
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painter->drawPolygon(points, 3);
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// Draw I/O lines
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painter->drawLine(inputPoints[0], QPointF(inputPoints[0].x() + BORDER_OFFSET, inputPoints[0].y()));
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painter->drawLine(outputPoint, QPointF(outputPoint.x() - BORDER_OFFSET, outputPoint.y()));
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// Draw text showing gate ID
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painter->setPen(defaultPen);
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painter->setFont(defaultFont);
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painter->drawText(textRect, Qt::AlignCenter, QString::number(gateID));
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// If enqueued, draw circle around gate ID
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if (enqueued) {
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painter->drawEllipse(textRect.center(), ENQUEUED_CIRCLE_WIDTH, ENQUEUED_CIRCLE_WIDTH);
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}
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}
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void Gate_BUFFER::simulateToOutput()
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{
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// Save initial values to compare to later
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logicValue initValue = outputValue;
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logicValue initFaultyValue = outputFaultyValue;
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// Compute new output values
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outputValue = inputValues[0];
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outputFaultyValue = inputFaultyValues[0];
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// If outputs have changed, queue the connected gate for simulation
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if (outputValue != initValue || outputFaultyValue != initFaultyValue)
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emit enqueueSim(this);
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// Update connected wire values
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for (int i = 0; i < gateOutputWires.size(); i++) {
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gateOutputWires[i]->setValue(outputValue, outputFaultyValue, false);
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}
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}
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