leonarski_fandClaude Opus 5
30252722e4
centerAt returns early while the window is hidden, and nothing replays the last position when it comes back, so re-opening the magnifier showed whatever region the cursor was over when it was closed - with current pixels, which makes it look like a live view of the wrong place. Remember the position while hidden and apply it on show. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
// SPDX-FileCopyrightText: 2026 Filip Leonarski, Paul Scherrer Institute <filip.leonarski@psi.ch>
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// SPDX-License-Identifier: GPL-3.0-only
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#pragma once
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#include <memory>
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#include <optional>
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#include "JFJochHelperWindow.h"
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#include <QPointF>
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class JFJochFollowerImage;
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class QImage;
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// ADXV-style magnifier: a small window showing a high-zoom close-up of the main image that
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// follows the cursor. It displays the frame the main view has already rendered, so it does no
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// conversion or colouring of its own and always agrees with the main view on colour map,
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// contrast and HDR mode.
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class JFJochMagnifierWindow : public JFJochHelperWindow {
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Q_OBJECT
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JFJochFollowerImage *m_image;
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// Where the cursor last was. Hover positions arriving while the window is hidden are remembered
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// rather than dropped, so re-opening shows the region the cursor is over now and not the one it
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// was over when the window was closed.
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std::optional<QPointF> m_last_scene_pos;
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public:
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explicit JFJochMagnifierWindow(QWidget *parent = nullptr);
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// Raw counts for the per-pixel labels. This only stores the pointer - the pixels are
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// displayed from the frame the main view rendered, nothing is converted here.
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void imageLoaded(std::shared_ptr<const JFJochReaderImage> image) override;
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protected:
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void showEvent(QShowEvent *event) override;
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public slots:
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void setFrame(std::shared_ptr<const QImage> frame);
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void centerAt(QPointF scenePos);
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};
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