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Simplified Qt sinks #2016

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Jul 27, 2021
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185 changes: 55 additions & 130 deletions include/spdlog/sinks/qt_sinks.h
Original file line number Diff line number Diff line change
Expand Up @@ -4,161 +4,78 @@
#pragma once

//
// Custom sink for QPlainTextEdit or QTextEdit and its children(QTextBrowser...
// etc) Building and using requires Qt library.
// Custom sink for QPlainTextEdit or QTextEdit and its childs(QTextBrowser... etc)
// Building and using requires Qt library.
//

#include "spdlog/common.h"
#include "spdlog/details/log_msg.h"
#include "spdlog/details/synchronous_factory.h"
#include "spdlog/sinks/base_sink.h"

#include <QObject>
#include <QPlainTextEdit>
#include <QTextEdit>

namespace _spdlog_p {
namespace _sinks_p {
//
// Private class for QTextEdit and its derivatives
//
class qtextedit_sink_p : public QObject
{
Q_OBJECT
public:
qtextedit_sink_p(QTextEdit *textedit = nullptr)
{
if (textedit != nullptr)
{
textedit_ = textedit;
connect(this, &qtextedit_sink_p::append_text, textedit_, &QTextEdit::append);
}
}

~qtextedit_sink_p() {}

void append(const spdlog::string_view_t &str)
{
emit append_text( QString::fromUtf8(str.data(), static_cast<int>(str.size())).trimmed() );
}

signals:
void append_text(const QString &);

private:
QTextEdit *textedit_ = nullptr;
};

//
// Private class for QPlainTextEdit
//
class qplaintextedit_sink_p : public QObject
{
Q_OBJECT
public:
qplaintextedit_sink_p(QPlainTextEdit *textedit = nullptr)
{
if (textedit != nullptr)
{
textedit_ = textedit;
connect(this, &qplaintextedit_sink_p::append_text, textedit_, &QPlainTextEdit::appendPlainText);
}
}

~qplaintextedit_sink_p() {}

void append(const spdlog::string_view_t &str)
{
emit append_text( QString::fromUtf8(str.data(), static_cast<int>(str.size())).trimmed() );
}

signals:
void append_text(const QString &);

private:
QPlainTextEdit *textedit_ = nullptr;
};
} // namespace _sinks_p
} // namespace _spdlog_p
#include <QPlainTextEdit>

//
// qtextedit_sink class
//
namespace spdlog {
namespace sinks {
template<typename Mutex>
class qtextedit_sink : public base_sink<Mutex>
{
template <typename Mutex>
class qtextedit_sink : public base_sink<Mutex> {
public:
qtextedit_sink(QTextEdit *textedit = nullptr)
{
if (textedit != nullptr)
{
textedit_p = std::make_shared<_spdlog_p::_sinks_p::qtextedit_sink_p>(textedit);
}
else
{
throw spdlog_ex("Error opening QTextEdit");
}
qtextedit_sink(QTextEdit *textedit = nullptr) {
if (textedit != nullptr) {
qtextedit_ = textedit;
} else {
throw spdlog_ex("Error opening QTextEdit");
}
}

~qtextedit_sink()
{
flush_();
}
~qtextedit_sink() { flush_(); }

protected:
void sink_it_(const details::log_msg &msg) override
{
memory_buf_t formatted;
base_sink<Mutex>::formatter_->format(msg, formatted);
string_view_t str_v = string_view_t(formatted.data(), formatted.size());
textedit_p->append(str_v);
}
void sink_it_(const details::log_msg &msg) override {
memory_buf_t formatted;
base_sink<Mutex>::formatter_->format(msg, formatted);
string_view_t str = string_view_t(formatted.data(), formatted.size());
QMetaObject::invokeMethod(qtextedit_,"append", Qt::AutoConnection, Q_ARG(QString, QString::fromUtf8(str.data(), static_cast<int>(str.size())).trimmed()));
}
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@gabime gabime Jul 27, 2021

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why the change from the simple append()? seems inefficient.

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Direct calling GUI widget functions from another threads in Qt app results crash. Qt forces us to use their own Q_OBJECT macro and connect function or QMetaObject::invokemethod function.


void flush_() override {}
void flush_() override {}

private:
std::shared_ptr<_spdlog_p::_sinks_p::qtextedit_sink_p> textedit_p = nullptr;
QTextEdit* qtextedit_ = nullptr;
};

//
// qplaintextedit_sink class
//
template<typename Mutex>
class qplaintextedit_sink : public base_sink<Mutex>
{
template <typename Mutex>
class qplaintextedit_sink : public base_sink<Mutex> {
public:
qplaintextedit_sink(QPlainTextEdit *textedit = nullptr)
{
if (textedit != nullptr)
{
textedit_p = std::make_shared<_spdlog_p::_sinks_p::qplaintextedit_sink_p>(textedit);
}
else
{
qplaintextedit_sink(QPlainTextEdit *textedit = nullptr) {
if (textedit != nullptr) {
qplaintextedit_ = textedit;
} else {
throw spdlog_ex("Error opening QPlainTextEdit");
}
}

~qplaintextedit_sink()
{
flush_();
}
~qplaintextedit_sink() { flush_(); }

protected:
void sink_it_(const details::log_msg &msg) override
{
void sink_it_(const details::log_msg &msg) override {
memory_buf_t formatted;
base_sink<Mutex>::formatter_->format(msg, formatted);
string_view_t str_v = string_view_t(formatted.data(), formatted.size());
textedit_p->append(str_v);
string_view_t str = string_view_t(formatted.data(), formatted.size());
QMetaObject::invokeMethod(qplaintextedit_, "appendPlainText", Qt::AutoConnection, Q_ARG(QString, QString::fromUtf8(str.data(), static_cast<int>(str.size())).trimmed()));
}

void flush_() override {}

private:
std::shared_ptr<_spdlog_p::_sinks_p::qplaintextedit_sink_p> textedit_p = nullptr;
QPlainTextEdit* qplaintextedit_ = nullptr;
};

#include "spdlog/details/null_mutex.h"
Expand All @@ -174,27 +91,35 @@ using qplaintextedit_sink_st = qplaintextedit_sink<spdlog::details::null_mutex>;
//
// Factory functions
//
template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> qtextedit_logger_mt(const std::string &logger_name, QTextEdit *qtextedit = nullptr)
{
return Factory::template create<sinks::qtextedit_sink_mt>(logger_name, qtextedit);
template <typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger>
qtextedit_logger_mt(const std::string &logger_name,
QTextEdit *qtextedit = nullptr) {
return Factory::template create<sinks::qtextedit_sink_mt>(logger_name,
qtextedit);
}

template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> qtextedit_logger_st(const std::string &logger_name, QTextEdit *qtextedit = nullptr)
{
return Factory::template create<sinks::qtextedit_sink_st>(logger_name, qtextedit);
template <typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger>
qtextedit_logger_st(const std::string &logger_name,
QTextEdit *qtextedit = nullptr) {
return Factory::template create<sinks::qtextedit_sink_st>(logger_name,
qtextedit);
}

template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> qplaintextedit_logger_mt(const std::string &logger_name, QPlainTextEdit *qplaintextedit = nullptr)
{
return Factory::template create<sinks::qplaintextedit_sink_mt>(logger_name, qplaintextedit);
template <typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger>
qplaintextedit_logger_mt(const std::string &logger_name,
QPlainTextEdit *qplaintextedit = nullptr) {
return Factory::template create<sinks::qplaintextedit_sink_mt>(logger_name,
qplaintextedit);
}

template<typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger> qplaintextedit_logger_st(const std::string &logger_name, QPlainTextEdit *qplaintextedit = nullptr)
{
return Factory::template create<sinks::qplaintextedit_sink_st>(logger_name, qplaintextedit);
template <typename Factory = spdlog::synchronous_factory>
inline std::shared_ptr<logger>
qplaintextedit_logger_st(const std::string &logger_name,
QPlainTextEdit *qplaintextedit = nullptr) {
return Factory::template create<sinks::qplaintextedit_sink_st>(logger_name,
qplaintextedit);
}
} // namespace spdlog