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117 lines
4.1 KiB
C++
117 lines
4.1 KiB
C++
// Copyright(c) 2015-present, Gabi Melman, mguludag and spdlog contributors.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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#pragma once
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//
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// Custom sink for QPlainTextEdit or QTextEdit and its childs(QTextBrowser...etc)
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// Building and using requires Qt library.
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//
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// Warning: the qt_sink won't be notified if the target widget is destroyed.
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// If the widget's lifetime can be shorter than the logger's one, you should provide some permanent QObject,
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// and then use a standard signal/slot.
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//
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#include "spdlog/common.h"
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#include "spdlog/details/log_msg.h"
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#include "spdlog/details/synchronous_factory.h"
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#include "spdlog/sinks/base_sink.h"
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#include <QMetaMethod>
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#include <QTextEdit>
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#include <QPlainTextEdit>
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//
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// qt_sink class
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//
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namespace spdlog {
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namespace sinks {
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template<typename Mutex>
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class qt_sink : public base_sink<Mutex>
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{
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public:
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// qt object is the object that receives the log messages (e.g QPlainTextEdit or QTextEdit)
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// meta_method_name is the name of the slot to be called on the qt_object for every log message (e.g "append(QString)").
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qt_sink(QObject *qt_object, const std::string &meta_method_name)
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{
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// store the meta method object for later usage
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qt_object_ = qt_object;
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auto *metaobject = qt_object_->metaObject();
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auto methodIndex = metaobject->indexOfMethod(meta_method_name.c_str());
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if (methodIndex == -1) {
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throw_spdlog_ex("qt_sink: qt_object does not have meta_method " + meta_method_name);
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}
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meta_method_ = metaobject->method(methodIndex);
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}
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~qt_sink()
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{
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flush_();
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}
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protected:
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void sink_it_(const details::log_msg &msg) override
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{
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memory_buf_t formatted;
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base_sink<Mutex>::formatter_->format(msg, formatted);
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string_view_t str = string_view_t(formatted.data(), formatted.size());
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auto payload = QString::fromUtf8(str.data(), static_cast<int>(str.size())).trimmed();
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meta_method_.invoke(qt_object_, Qt::AutoConnection, Q_ARG(QString, payload));
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}
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void flush_() override {}
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private:
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QObject *qt_object_ = nullptr;
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QMetaMethod meta_method_;
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};
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#include "spdlog/details/null_mutex.h"
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#include <mutex>
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using qt_sink_mt = qt_sink<std::mutex>;
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using qt_sink_st = qt_sink<spdlog::details::null_mutex>;
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} // namespace sinks
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//
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// Factory functions
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//
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_mt(const std::string &logger_name, QTextEdit *qt_object, const std::string &meta_method = "append(QString)")
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{
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return Factory::template create<sinks::qt_sink_mt>(logger_name, qt_object, meta_method);
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}
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_st(const std::string &logger_name, QTextEdit *qt_object, const std::string &meta_method = "append(QString)")
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{
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return Factory::template create<sinks::qt_sink_st>(logger_name, qt_object, meta_method);
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}
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_mt(
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const std::string &logger_name, QPlainTextEdit *qt_object, const std::string &meta_method = "appendPlainText(QString)")
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{
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return Factory::template create<sinks::qt_sink_mt>(logger_name, qt_object, meta_method);
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}
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_st(
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const std::string &logger_name, QPlainTextEdit *qt_object, const std::string &meta_method = "appendPlainText(QString)")
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{
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return Factory::template create<sinks::qt_sink_st>(logger_name, qt_object, meta_method);
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}
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_mt(const std::string &logger_name, QObject *qt_object, const std::string &meta_method)
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{
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return Factory::template create<sinks::qt_sink_mt>(logger_name, qt_object, meta_method);
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}
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template<typename Factory = spdlog::synchronous_factory>
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inline std::shared_ptr<logger> qt_logger_st(const std::string &logger_name, QObject *qt_object, const std::string &meta_method)
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{
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return Factory::template create<sinks::qt_sink_st>(logger_name, qt_object, meta_method);
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}
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} // namespace spdlog
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