#include <QApplication>
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsPixmapItem>
#include <QPixmap>
#include <QWheelEvent>
#include <QMouseEvent>
#include <QtMath>
#include "imageredactor.h"

ImageRedactor::ImageRedactor(QWidget *parent) : QGraphicsView(parent) {
    scene = new QGraphicsScene(this);
    setScene(scene);

    // Load the image
    QPixmap pixmap("image.jpg");
    item = new QGraphicsPixmapItem(pixmap);
    scene->addItem(item);

    // Set the initial zoom level
    setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
}

void ImageRedactor::wheelEvent(QWheelEvent *event) {
    // Zoom in/out
    setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
    double angle = event->angleDelta().y();
    double factor = qPow(1.2, angle / 240.0);
    scale(factor, factor);
}

void ImageRedactor::mousePressEvent(QMouseEvent *event)
{
    // Pan the image
    if (event->button() == Qt::LeftButton)
    {
        setDragMode(QGraphicsView::ScrollHandDrag);
    }
}

void ImageRedactor::mouseReleaseEvent(QMouseEvent *event)
{
    // Reset the drag mode
    if (event->button() == Qt::LeftButton)
    {
        setDragMode(QGraphicsView::NoDrag);
    }
}