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// Copyright (c) 2018, ETH Zurich and UNC Chapel Hill.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the name of ETH Zurich and UNC Chapel Hill nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Author: Johannes L. Schoenberger (jsch at inf.ethz.ch)
#ifndef COLMAP_SRC_UI_LOG_WIDGET_H_
#define COLMAP_SRC_UI_LOG_WIDGET_H_
#include <fstream>
#include <iostream>
#include <QtGui>
#include <QtWidgets>
#include "util/option_manager.h"
namespace colmap {
template <class Elem = char, class Tr = std::char_traits<Elem>>
class StandardOutputRedirector : public std::basic_streambuf<Elem, Tr> {
typedef void (*cb_func_ptr)(const Elem*, std::streamsize count, void* data);
public:
StandardOutputRedirector(std::ostream& stream, cb_func_ptr cb_func,
void* data)
: stream_(stream), cb_func_(cb_func), data_(data) {
buf_ = stream_.rdbuf(this);
};
~StandardOutputRedirector() { stream_.rdbuf(buf_); }
std::streamsize xsputn(const Elem* ptr, std::streamsize count) {
cb_func_(ptr, count, data_);
return count;
}
typename Tr::int_type overflow(typename Tr::int_type v) {
Elem ch = Tr::to_char_type(v);
cb_func_(&ch, 1, data_);
return Tr::not_eof(v);
}
private:
std::basic_ostream<Elem, Tr>& stream_;
std::streambuf* buf_;
cb_func_ptr cb_func_;
void* data_;
};
class LogWidget : public QWidget {
public:
LogWidget(QWidget* parent, const int max_num_blocks = 100000);
~LogWidget();
void Append(const std::string& text);
void Flush();
void Clear();
private:
static void Update(const char* text, std::streamsize count,
void* text_box_ptr);
void SaveLog();
QMutex mutex_;
std::string text_queue_;
QPlainTextEdit* text_box_;
std::ofstream log_file_;
StandardOutputRedirector<char, std::char_traits<char>>* cout_redirector_;
StandardOutputRedirector<char, std::char_traits<char>>* cerr_redirector_;
StandardOutputRedirector<char, std::char_traits<char>>* clog_redirector_;
};
} // namespace colmap
#endif // COLMAP_SRC_UI_LOG_WIDGET_H_
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