How to resize image to fit in graphic view

Question

I have code that displays an image with its name on listWidget. In that case the image won't fit in the graphics view. I tested some of resizing methods. But the images won't resize.

How can I resize images to fit in? Please take a look my code.

directory.setNameFilters({"*.png", "*.jpg"});

for(const QFileInfo & finfo: directory.entryInfoList()){
    auto imageObject = new QImage();
    imageObject->load(finfo.absoluteFilePath());

    auto image = QPixmap::fromImage(*imageObject);

    QGraphicsScene *scene = new QGraphicsScene(this);

    scene->addPixmap(image);
    //scene->setSceneRect(image.rect());
    QGraphicsView *graphicsView = new QGraphicsView(scene);
    graphicsView->fitInView(scene->sceneRect(),Qt::KeepAspectRatio);

    auto item = new QListWidgetItem("", ui->listWidget_main);
    auto    widget = new QWidget;
    auto    label = new QLabel(finfo.fileName());
    auto    vb = new QVBoxLayout;

    vb->addWidget(label);
    vb->addWidget(graphicsView);

    widget->setLayout(vb);
    widget->setMinimumSize(340,340);
    ui->listWidget_main->setItemWidget(item,widget);
}

"it doesn't work" is not very helpful problem description... — hyde, Jul 16 '18 at 06:59
what is the `scene->sceneRect()` value? What kind of magic it should provide desired size? — Marek R, Jul 16 '18 at 07:13
Can you show what output screen you get ? are the graphics _overlapping_? — Mohammad Kanan, Jul 16 '18 at 12:22
@MohammadKanan Here is the output what is going on . This output contains video player and text edit but u can see images clearly.Here is the link https://ibb.co/gEMYEJ — Zin Oo, Jul 17 '18 at 03:59
I see you got solution with `QLabel`, though you still can do with `QGraphicsView`, the thing is your code does not produce the output you shared. — Mohammad Kanan, Jul 17 '18 at 08:46

score 0 · Accepted Answer · answered Jul 17 '18 at 05:51

I use QLabel instead of QGraphicsView

directory.setNameFilters({"*.png", "*.jpg"});

    for(const QFileInfo & finfo: directory.entryInfoList()){

        QPixmap image(finfo.absoluteFilePath());
        auto imageLabel = new QLabel();
        imageLabel->setMinimumSize(320,320);
        imageLabel->setScaledContents(true);
        imageLabel->setPixmap(image);



        auto    item = new QListWidgetItem("",listWidget_main);
        auto    widget = new QWidget;
        auto    label = new QLabel(finfo.fileName());
        auto    vb = new QVBoxLayout;

        vb->addWidget(label);
        vb->addWidget(imageLabel);

        widget->setLayout(vb);
        widget->setMinimumSize(340,340);
        listWidget_main->setItemWidget(item,widget);
}

How to resize image to fit in graphic view

1 Answers1