mirror of https://github.com/qt/qtdoc.git
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
// Copyright (C) 2025 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef IMAGEVIEWER_H
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#define IMAGEVIEWER_H
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#include "viewerinterfaces.h"
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#include <QSizeF>
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QT_FORWARD_DECLARE_CLASS(QLabel)
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class ImageViewer : public ViewerInterface
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{
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Q_OBJECT
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Q_PLUGIN_METADATA(IID "org.qt-project.Qt.Examples.DocumentViewer.ViewerInterface" FILE "imageviewer.json")
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Q_INTERFACES(ViewerInterface)
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public:
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Q_DISABLE_COPY_MOVE(ImageViewer)
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ImageViewer();
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~ImageViewer() override;
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void init(QFile *file, QWidget *parent, QMainWindow *mainWindow) override;
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QString viewerName() const override { return QLatin1StringView(staticMetaObject.className()); };
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QStringList supportedMimeTypes() const override;
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void retranslate() override;
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bool hasContent() const override;
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QByteArray saveState() const override { return {}; }
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bool restoreState(QByteArray &) override { return true; }
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bool supportsOverview() const override { return false; }
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#ifdef DOCUMENTVIEWER_PRINTSUPPORT
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protected:
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void printDocument(QPrinter *printer) const override;
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#endif // DOCUMENTVIEWER_PRINTSUPPORT
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private slots:
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void setupImageUi();
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void clear();
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void zoomIn();
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void zoomOut();
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void resetZoom();
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private:
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void openFile();
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void setScaleFactor(qreal scaleFactor);
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void doSetScaleFactor(qreal scaleFactor);
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void enableZoomActions();
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QLabel *m_imageLabel{};
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QToolBar *m_toolBar{};
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QAction *m_zoomInAct{};
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QAction *m_zoomOutAct{};
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QAction *m_resetZoomAct{};
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QStringList m_formats;
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qreal m_scaleFactor = 1;
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qreal m_initialScaleFactor = 1;
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qreal m_minScaleFactor = 1;
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qreal m_maxScaleFactor = 1;
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QSizeF m_imageSize;
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};
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#endif //IMAGEVIEWER_H
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