43 lines
912 B
C++
43 lines
912 B
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include <functional>
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#include <memory>
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#include <QObject>
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#include <QWidget>
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class CatchShow : public QObject
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{
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Q_OBJECT
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public:
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CatchShow(QObject* parent = nullptr);
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template <typename T, typename F>
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void setCallback(F&& func);
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bool eventFilter(QObject* obj, QEvent* event) override;
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int count() const;
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private:
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std::function<void(QObject* obj)> m_callback;
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int m_count = 0;
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};
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template <typename T, typename F>
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void CatchShow::setCallback(F&& func)
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{
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this->m_callback = [this, func](QObject* obj) {
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auto* d = qobject_cast<T*>(obj);
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if (d) {
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QMetaObject::invokeMethod(
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obj,
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[this, func, d]() {
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++this->m_count;
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func(d);
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},
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Qt::QueuedConnection);
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}
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};
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}
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