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#include "instructionview.h"
#include <QPainter>
#include <QFont>
using namespace coreview;
//////////////////////
#define WIDTH 120
#define HEIGHT 14
#define ROUND 5
#define GAP 2
#define PENW 1
//////////////////////
InstructionView::InstructionView() : QGraphicsObject(nullptr), text(this) {
QFont f;
f.setPointSize(6);
text.setFont(f);
instruction_update(machine::Instruction()); // Initialize to NOP
}
QRectF InstructionView::boundingRect() const {
return QRectF(-WIDTH/2 - PENW/2, -PENW/2, WIDTH + PENW, HEIGHT + PENW);
}
void InstructionView::paint(QPainter *painter, const QStyleOptionGraphicsItem *option __attribute__((unused)), QWidget *widget __attribute__((unused))) {
painter->setPen(QPen(QColor(240, 240, 240)));
painter->setBrush(QBrush(QColor(240, 240, 240)));
painter->drawRoundRect(-WIDTH/2, 0, WIDTH, HEIGHT, ROUND, ROUND);
}
void InstructionView::instruction_update(const machine::Instruction &i) {
QRectF prev_box = boundingRect();
text.setText(i.to_str());
QRectF box = text.boundingRect();
text.setPos(-box.width()/2, GAP);
update(prev_box.united(boundingRect()));
}
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