#include "widget.h"
#include "ui_widget.h"
#include <QPixmap>
#include <QPainter>

Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    buffer = new QPixmap(100,100);

}

Widget::~Widget()
{
    delete ui;
}

void Widget::updateImage() {
    QPainter p(buffer);
    p.fillRect(QRectF(0,0,buffer->width(),buffer->height()), QBrush(Qt::black));
    p.fillRect(QRectF(10.0, 20.0, 80.0, 60.0), QBrush(Qt::green));
    ui->screenLabel->setPixmap(*buffer);
}