68 lines
1.7 KiB
C++
68 lines
1.7 KiB
C++
#ifndef SLIDER_H
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#define SLIDER_H
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#include <QWidget>
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#include <QPoint>
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class Slider;
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class Handle : public QWidget
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{
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Q_OBJECT
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public:
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explicit Handle(Slider *slider);
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~Handle();
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Q_DECL_OVERRIDE
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inline QSize sizeHint() const { return QSize(16, 16); }
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inline void setRelativePosition(const QPoint &pos) { setPosition(_offset + pos); }
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inline void setPosition(const QPoint &pos) { _position = pos; refreshGeometry(); }
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inline const QPoint &position() const { return _position; }
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inline void setOffset(const QPoint &offset) { _offset = offset; update(); }
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inline const QPoint &offset() const { return _offset; }
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void refreshGeometry();
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protected:
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void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
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void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
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void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
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private:
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Slider *const _slider;
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QPoint _position;
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QPoint _eventPos;
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QPoint _offset;
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};
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class Slider : public QWidget
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{
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Q_OBJECT
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public:
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explicit Slider(QWidget *parent = 0);
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~Slider();
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inline void setOrientation(Qt::Orientation orientation) { _orientation = orientation; }
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inline Qt::Orientation orientation() const { return _orientation; }
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protected:
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void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
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void mousePressEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
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void mouseMoveEvent(QMouseEvent *event) Q_DECL_OVERRIDE;
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void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE;
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private:
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inline bool isOnTrack(int p, int x) const { return (p >= x-2 && p <= x+2); }
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bool _drag;
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Handle *const _handle;
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Qt::Orientation _orientation;
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};
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#endif // SLIDER_H
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