mirror of https://github.com/qt/qtdoc.git
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
// Copyright (C) 2023 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef HOVERWATCHER_H
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#define HOVERWATCHER_H
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#include <QObject>
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#include <QEvent>
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#include <QScroller>
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class QWidget;
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class HoverWatcher : public QObject
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{
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Q_OBJECT
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private:
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explicit HoverWatcher(QWidget *watched);
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static QMap<QWidget *, HoverWatcher *> m_hoverWatchers;
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public:
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~HoverWatcher();
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enum HoverAction {
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Entered,
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MousePress,
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MouseRelease,
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Left,
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Ignore
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};
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Q_ENUM(HoverAction);
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bool eventFilter(QObject *obj, QEvent *event) override;
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Qt::CursorShape cursorShape(HoverAction type) const;
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Qt::MouseButtons mouseButtons() const { return m_mouseButtons; }
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static HoverWatcher *watcher(QWidget *watched);
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static const HoverWatcher *watcher(const QWidget *watched);
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static bool hasWatcher(QWidget *widget);
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static void dismiss(QWidget *watched);
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public slots:
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void setCursorShape(HoverAction type, Qt::CursorShape shape);
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void unSetCursorShape(HoverAction type);
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void setMouseButtons(Qt::MouseButtons buttons);
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void setMouseButton(Qt::MouseButton button, bool enable);
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signals:
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void entered();
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void mousePressed();
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void mouseReleased();
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void left();
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void hoverAction(HoverAction action);
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private slots:
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void handleScrollerStateChange(QScroller::State state);
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private:
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QWidget *m_watched;
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std::array<std::optional<Qt::CursorShape>, HoverAction::Ignore> m_cursorShapes;
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Qt::MouseButtons m_mouseButtons = Qt::MouseButton::LeftButton;
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void handleAction(HoverAction action);
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void setApplicationCursor(HoverAction action) const;
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bool hasShape(HoverAction action) const;
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};
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#endif // HOVERWATCHER_H
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