resources popout refresh + new components & reskinned old components

Plugins/ZShell/Services/memory.cpp

@@ -0,0 +1,59 @@
+#include "memory.hpp"
+
+#include <qfile.h>
+#include <qregularexpression.h>
+
+namespace ZShell::services {
+
+Memory::Memory(QObject* parent)
+	: TickingService(parent) {
+}
+
+qreal Memory::used() const {
+	return m_used;
+}
+
+qreal Memory::total() const {
+	return m_total;
+}
+
+qreal Memory::percentage() const {
+	return m_total > 0.0 ? m_used / m_total : 0.0;
+}
+
+void Memory::tick() {
+	QFile f(QStringLiteral("/proc/meminfo"));
+	if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+		return;
+	}
+	const QByteArray data = f.readAll();
+	f.close();
+
+	static const QRegularExpression reTotal(QStringLiteral("MemTotal: *(\\d+)"));
+	static const QRegularExpression reAvail(QStringLiteral("MemAvailable: *(\\d+)"));
+	const QString text = QString::fromLatin1(data);
+
+	const auto totalMatch = reTotal.match(text);
+	const auto availMatch = reAvail.match(text);
+	if (!totalMatch.hasMatch() || !availMatch.hasMatch()) {
+		return;
+	}
+
+	const quint64 totalKib = totalMatch.captured(1).toULongLong();
+	const quint64 availKib = availMatch.captured(1).toULongLong();
+	if (totalKib == 0) {
+		return;
+	}
+	const quint64 usedKib = totalKib > availKib ? totalKib - availKib : 0;
+
+	if (totalKib == m_lastTotal && usedKib == m_lastUsed) {
+		return;
+	}
+	m_lastTotal = totalKib;
+	m_lastUsed = usedKib;
+	m_total = static_cast<qreal>(totalKib);
+	m_used = static_cast<qreal>(usedKib);
+	Q_EMIT changed();
+}
+
+} // namespace ZShell::services