82 lines
2.8 KiB
C++
82 lines
2.8 KiB
C++
// SPDX-FileCopyrightText: 2022 Gary Wang <wzc782970009@gmail.com>
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//
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// SPDX-License-Identifier: MIT
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#ifndef GRAPHICSVIEW_H
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#define GRAPHICSVIEW_H
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#include <QGraphicsView>
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#include <QUrl>
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class GraphicsScene;
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class GraphicsView : public QGraphicsView
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{
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Q_OBJECT
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public:
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GraphicsView(QWidget *parent = nullptr);
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void showFileFromPath(const QString &filePath, bool requestGallery = false);
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void showImage(const QPixmap &pixmap);
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void showImage(const QImage &image);
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void showText(const QString &text);
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void showSvg(const QString &filepath);
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void showAnimated(const QString &filepath);
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GraphicsScene * scene() const;
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void setScene(GraphicsScene *scene);
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qreal scaleFactor() const;
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void resetTransform();
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void zoomView(qreal scaleFactor);
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void rotateView(bool clockwise = true);
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void flipView(bool horizontal = true);
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void resetScale();
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void fitInView(const QRectF &rect, Qt::AspectRatioMode aspectRadioMode = Qt::IgnoreAspectRatio);
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void fitByOrientation(Qt::Orientation ori = Qt::Horizontal, bool scaleDownOnly = false);
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void displayScene();
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bool isSceneBiggerThanView() const;
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void setEnableAutoFitInView(bool enable = true);
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bool avoidResetTransform() const;
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void setAvoidResetTransform(bool avoidReset);
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static QTransform resetScale(const QTransform & orig);
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signals:
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void navigatorViewRequired(bool required, QTransform transform);
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void viewportRectChanged();
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void requestGallery(const QString &filePath);
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public slots:
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void toggleCheckerboard(bool invertCheckerboardColor = false);
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private:
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void mousePressEvent(QMouseEvent * event) override;
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void mouseMoveEvent(QMouseEvent * event) override;
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void mouseReleaseEvent(QMouseEvent * event) override;
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void wheelEvent(QWheelEvent *event) override;
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void resizeEvent(QResizeEvent *event) override;
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void dragEnterEvent(QDragEnterEvent *event) override;
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void dragMoveEvent(QDragMoveEvent *event) override;
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void dropEvent(QDropEvent *event) override;
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bool isThingSmallerThanWindowWith(const QTransform &transform) const;
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bool shouldIgnoreMousePressMoveEvent(const QMouseEvent *event) const;
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void setCheckerboardEnabled(bool enabled, bool invertColor = false);
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void applyTransformationModeByScaleFactor();
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// Consider switch to 3 state for "no fit", "always fit" and "fit when view is smaller"?
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// ... or even more? e.g. "fit/snap width" things...
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// Currently it's "no fit" when it's false and "fit when view is smaller" when it's true.
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bool m_enableFitInView = false;
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bool m_avoidResetTransform = false;
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bool m_checkerboardEnabled = false;
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bool m_isLastCheckerboardColorInverted = false;
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};
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#endif // GRAPHICSVIEW_H
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