dolphin/Source/Core/DolphinQt/Config/LogWidget.cpp

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// Copyright 2017 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
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#include "DolphinQt/Config/LogWidget.h"
#include <QCheckBox>
#include <QComboBox>
#include <QFont>
#include <QFontDatabase>
#include <QGridLayout>
#include <QPlainTextEdit>
#include <QPushButton>
#include <QTimer>
#include "Core/ConfigManager.h"
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#include "DolphinQt/Settings.h"
// Delay in ms between calls of UpdateLog()
constexpr int UPDATE_LOG_DELAY = 100;
// Maximum lines to process at a time
constexpr size_t MAX_LOG_LINES_TO_UPDATE = 200;
// Timestamp length
constexpr size_t TIMESTAMP_LENGTH = 10;
// A helper function to construct QString from std::string_view in one line
static QString QStringFromStringView(std::string_view str)
{
return QString::fromUtf8(str.data(), static_cast<int>(str.size()));
}
LogWidget::LogWidget(QWidget* parent) : QDockWidget(parent), m_timer(new QTimer(this))
{
setWindowTitle(tr("Log"));
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setObjectName(QStringLiteral("log"));
setHidden(!Settings::Instance().IsLogVisible());
setAllowedAreas(Qt::AllDockWidgetAreas);
CreateWidgets();
LoadSettings();
ConnectWidgets();
connect(m_timer, &QTimer::timeout, this, &LogWidget::UpdateLog);
connect(this, &QDockWidget::visibilityChanged, [this](bool visible) {
if (visible)
m_timer->start(UPDATE_LOG_DELAY);
else
m_timer->stop();
});
connect(&Settings::Instance(), &Settings::DebugFontChanged, this, &LogWidget::UpdateFont);
Common::Log::LogManager::GetInstance()->RegisterListener(LogListener::LOG_WINDOW_LISTENER, this);
}
LogWidget::~LogWidget()
{
SaveSettings();
Common::Log::LogManager::GetInstance()->RegisterListener(LogListener::LOG_WINDOW_LISTENER,
nullptr);
}
void LogWidget::UpdateLog()
{
std::vector<LogEntry> elements_to_push;
{
std::lock_guard lock(m_log_mutex);
if (m_log_ring_buffer.empty())
return;
elements_to_push.reserve(std::min(MAX_LOG_LINES_TO_UPDATE, m_log_ring_buffer.size()));
for (size_t i = 0; !m_log_ring_buffer.empty() && i < MAX_LOG_LINES_TO_UPDATE; i++)
elements_to_push.push_back(m_log_ring_buffer.pop_front());
}
for (auto& line : elements_to_push)
{
const char* color = "white";
switch (std::get<Common::Log::LOG_LEVELS>(line))
{
case Common::Log::LOG_LEVELS::LERROR:
color = "red";
break;
case Common::Log::LOG_LEVELS::LWARNING:
color = "yellow";
break;
case Common::Log::LOG_LEVELS::LNOTICE:
color = "lime";
break;
case Common::Log::LOG_LEVELS::LINFO:
color = "cyan";
break;
case Common::Log::LOG_LEVELS::LDEBUG:
color = "lightgrey";
break;
}
const std::string_view str_view(std::get<std::string>(line));
m_log_text->appendHtml(
QStringLiteral("%1 <span style=\"color: %2; white-space: pre\">%3</span>")
.arg(QStringFromStringView(str_view.substr(0, TIMESTAMP_LENGTH)),
QString::fromUtf8(color),
QStringFromStringView(str_view.substr(TIMESTAMP_LENGTH)).toHtmlEscaped()));
}
}
void LogWidget::UpdateFont()
{
QFont f;
switch (m_log_font->currentIndex())
{
case 0: // Default font
break;
case 1: // Monospace font
f = QFont(QFontDatabase::systemFont(QFontDatabase::FixedFont).family());
break;
case 2: // Debugger font
f = Settings::Instance().GetDebugFont();
break;
}
m_log_text->setFont(f);
}
void LogWidget::CreateWidgets()
{
// Log
m_log_text = new QPlainTextEdit;
m_log_wrap = new QCheckBox(tr("Word Wrap"));
m_log_font = new QComboBox;
m_log_clear = new QPushButton(tr("Clear"));
m_log_font->addItems({tr("Default Font"), tr("Monospaced Font"), tr("Selected Font")});
auto* log_layout = new QGridLayout;
log_layout->addWidget(m_log_wrap, 0, 0);
log_layout->addWidget(m_log_font, 0, 1);
log_layout->addWidget(m_log_clear, 0, 2);
log_layout->addWidget(m_log_text, 1, 0, 1, -1);
QWidget* widget = new QWidget;
widget->setLayout(log_layout);
setWidget(widget);
m_log_text->setReadOnly(true);
m_log_text->setUndoRedoEnabled(false);
m_log_text->setMaximumBlockCount(MAX_LOG_LINES);
QPalette palette = m_log_text->palette();
palette.setColor(QPalette::Base, Qt::black);
palette.setColor(QPalette::Text, Qt::white);
m_log_text->setPalette(palette);
}
void LogWidget::ConnectWidgets()
{
connect(m_log_clear, &QPushButton::clicked, [this] {
m_log_text->clear();
m_log_ring_buffer.clear();
});
connect(m_log_wrap, &QCheckBox::toggled, this, &LogWidget::SaveSettings);
connect(m_log_font, qOverload<int>(&QComboBox::currentIndexChanged), this,
&LogWidget::SaveSettings);
connect(this, &QDockWidget::topLevelChanged, this, &LogWidget::SaveSettings);
connect(&Settings::Instance(), &Settings::LogVisibilityChanged, this, &LogWidget::setVisible);
}
void LogWidget::LoadSettings()
{
auto& settings = Settings::GetQSettings();
restoreGeometry(settings.value(QStringLiteral("logwidget/geometry")).toByteArray());
setFloating(settings.value(QStringLiteral("logwidget/floating")).toBool());
// Log - Wrap Lines
m_log_wrap->setChecked(settings.value(QStringLiteral("logging/wraplines")).toBool());
m_log_text->setLineWrapMode(m_log_wrap->isChecked() ? QPlainTextEdit::WidgetWidth :
QPlainTextEdit::NoWrap);
m_log_text->setHorizontalScrollBarPolicy(m_log_wrap->isChecked() ? Qt::ScrollBarAsNeeded :
Qt::ScrollBarAlwaysOn);
// Log - Font Selection
// Currently "Debugger Font" is not supported as there is no Qt Debugger, defaulting to Monospace
m_log_font->setCurrentIndex(std::min(settings.value(QStringLiteral("logging/font")).toInt(), 1));
UpdateFont();
}
void LogWidget::SaveSettings()
{
auto& settings = Settings::GetQSettings();
settings.setValue(QStringLiteral("logwidget/geometry"), saveGeometry());
settings.setValue(QStringLiteral("logwidget/floating"), isFloating());
// Log - Wrap Lines
settings.setValue(QStringLiteral("logging/wraplines"), m_log_wrap->isChecked());
m_log_text->setLineWrapMode(m_log_wrap->isChecked() ? QPlainTextEdit::WidgetWidth :
QPlainTextEdit::NoWrap);
m_log_text->setHorizontalScrollBarPolicy(m_log_wrap->isChecked() ? Qt::ScrollBarAsNeeded :
Qt::ScrollBarAlwaysOn);
// Log - Font Selection
settings.setValue(QStringLiteral("logging/font"), m_log_font->currentIndex());
UpdateFont();
}
void LogWidget::Log(Common::Log::LOG_LEVELS level, const char* text)
{
size_t text_length = strlen(text);
while (text_length > 0 && text[text_length - 1] == '\n')
text_length--;
std::lock_guard lock(m_log_mutex);
m_log_ring_buffer.emplace(std::piecewise_construct, std::forward_as_tuple(text, text_length),
std::forward_as_tuple(level));
}
void LogWidget::closeEvent(QCloseEvent*)
{
Settings::Instance().SetLogVisible(false);
}