need help .not able to understand.......

[sh123]

I got the program in which image gets rotated.But here the original image doesn't get displayed.Instead the image is displayed as zoomed & every pixel looks like a chip(i.e.IC).The following is the function which does zooming:

void MainWindow::PopulateScene()
{
    scene = new QGraphicsScene;
 
    QImage image(":/qt4logo.png");
 
    // Populate scene
    int xx = 0;
    int nitems = 0;
    for (int i = -11000; i < 11000; i += 110) {
        ++xx;
        int yy = 0;
        for (int j = -7000; j < 7000; j += 70) {
            ++yy;
            qreal x = (i + 11000) / 22000.0;
            qreal y = (j + 7000) / 14000.0;
 
            QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
            QGraphicsItem *item = new Chip(color, xx, yy);
            item->setPos(QPointF(i, j));
            scene->addItem(item);
 
            ++nitems;
        }
    }
}

void MainWindow::PopulateScene()
{
    scene = new QGraphicsScene;

    QImage image(":/qt4logo.png");

    // Populate scene
    int xx = 0;
    int nitems = 0;
    for (int i = -11000; i < 11000; i += 110) {
        ++xx;
        int yy = 0;
        for (int j = -7000; j < 7000; j += 70) {
            ++yy;
            qreal x = (i + 11000) / 22000.0;
            qreal y = (j + 7000) / 14000.0;

            QColor color(image.pixel(int(image.width() * x), int(image.height() * y)));
            QGraphicsItem *item = new Chip(color, xx, yy);
            item->setPos(QPointF(i, j));
            scene->addItem(item);

            ++nitems;
        }
    }
}

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This is from the program chip.The path is as follows:\Qt\4.4.3\demos\chip.
I want to know how the original image can be displayed instead of zoomed one.Please help

[wysota]

Definitely not like this

Try this instead:

QGraphicsView *gv = new QGraphicsView;
gv->setScene(new QGraphicsScene);
gv->scene()->addPixmap(QPixmap("somepixmap.png"));
gv->show();

QGraphicsView *gv = new QGraphicsView;
gv->setScene(new QGraphicsScene);
gv->scene()->addPixmap(QPixmap("somepixmap.png"));
gv->show();

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And next time please try to find some code snippet or documentation paragraph that is at least somewhat similar to your problem.