107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/*
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* Copyright 2010-2011 Niels Kummerfeldt <niels.kummerfeldt@tu-harburg.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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#include "batterylayer.h"
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#include "mapwidget.h"
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#include <QtCore/QDebug>
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#include <QtCore/QFile>
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#include <QtCore/QTextStream>
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BatteryLayer::BatteryLayer(MapWidget *map) :
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AbstractLayer(map),
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m_updateTimer(new QTimer(this)),
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m_percent(0),
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m_isCharging(false)
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{
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m_updateTimer->setInterval(60 * 1000);
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connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(repaint()));
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m_updateTimer->start();
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reload();
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}
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void BatteryLayer::keyPressed(QKeyEvent *event)
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{
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if (event->modifiers() == Qt::NoModifier &&
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event->key() == Qt::Key_B) {
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toggleVisibility();
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reload();
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}
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}
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void BatteryLayer::paint(QPainter *painter)
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{
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int w = map()->width();
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int h = map()->height();
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painter->setBrush(QBrush(QColor(255, 255, 255, 210)));
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painter->drawRoundedRect(w - 111, h - 17, 110, 16, 5, 5);
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QColor color;
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if (m_isCharging) {
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color = QColor(0, 255, 0, 220);
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} else {
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color = QColor(0, 0, 255, 220);
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}
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QLinearGradient grad(w - 111, h - 17, w - 111, h - 1);
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grad.setColorAt(0, color.lighter());
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grad.setColorAt(1, color.darker());
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painter->setBrush(grad);
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painter->drawRoundedRect(w - 111, h - 17, 10 + m_percent, 16, 5, 5);
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painter->drawText(w - 101, h - 15, 90, 14, Qt::AlignCenter, QString("%1%").arg(m_percent));
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}
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void BatteryLayer::repaint()
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{
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if (isVisible() && reload()) {
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map()->update();
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}
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}
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bool BatteryLayer::reload()
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{
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int percent = m_percent;
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QFile capacity("/sys/class/power_supply/battery/capacity");
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if (capacity.open(QFile::ReadOnly | QFile::Text)) {
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QTextStream in(&capacity);
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QString l = in.readLine();
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percent = l.toInt();
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}
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bool charging = m_isCharging;
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QFile status("/sys/class/power_supply/battery/status");
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if (status.open(QFile::ReadOnly | QFile::Text)) {
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QTextStream in(&status);
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QString l = in.readLine().toLower();
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charging = (l == "charging");
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}
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if (charging != m_isCharging || percent != m_percent) {
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m_isCharging = charging;
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m_percent = percent;
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return true;
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} else {
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return false;
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}
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}
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