33 lines
893 B
C++
33 lines
893 B
C++
#pragma once
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#include <QToolButton>
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class QMouseEvent;
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class QTimer;
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/**
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* 可复用的工具栏按钮：短按行为与普通 QToolButton 一致；
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* 左键按住超过设定时间（默认 450ms）且仍未松开时发出 longPressTriggered()，
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* 用于在「同一工具钮」上切换子模式（类似 Photoshop 长按切换同类工具）。
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*/
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class LongPressSwitchToolButton final : public QToolButton {
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Q_OBJECT
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public:
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explicit LongPressSwitchToolButton(QWidget* parent = nullptr);
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void setLongPressInterval(int ms);
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int longPressInterval() const { return m_intervalMs; }
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signals:
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void longPressTriggered();
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protected:
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void mousePressEvent(QMouseEvent* event) override;
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void mouseReleaseEvent(QMouseEvent* event) override;
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private:
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QTimer* m_timer = nullptr;
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int m_intervalMs = 450;
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bool m_longPressEmittedForThisPress = false;
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};
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