Jungfraujoch/viewer/widgets/JFJochViewerMagnifier.h

// SPDX-FileCopyrightText: 2026 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
// SPDX-License-Identifier: GPL-3.0-only

#pragma once

#include <memory>

#include <QToolButton>
#include <QWidget>

#include "../image_viewer/JFJochFollowerImage.h"

// ADXV-style magnifier, its own dock below the inspector: a close-up of the diffraction image
// that moves when the cursor moves over the image with Shift held. It displays the frame the main
// view has already rendered, so it always agrees with it on colour map, contrast and HDR mode.
// Three fixed zoom levels: large value labels, small value labels over a wider field, and a still
// wider field with no labels.
class JFJochViewerMagnifier : public QWidget {
    Q_OBJECT

    JFJochFollowerImage *image_;
    QToolButton *pop_out_;
signals:
    void fieldChanged(QSizeF size);
    // Move to a window of its own, or back into the dock. Qt's own dock floating is disabled in
    // this viewer (a floated dock goes dead on WSLg), so the main window moves the widget itself.
    void popOutClicked();
public:
    explicit JFJochViewerMagnifier(QWidget *parent = nullptr);
    void setPoppedOut(bool on);
public slots:
    void setFrame(std::shared_ptr<const QImage> frame);
    void setPixelValues(std::shared_ptr<const JFJochReaderImage> image);
    void centerAt(QPointF scenePos);
};