--- /dev/null
+/*
+ * GPSData for Maemo.
+ * Copyright (C) 2011 Roman Moravcik
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <QtGui>
+
+#include "satellitesignalstrength.h"
+
+void SatelliteSignalStrength::updateWidget(const QList<QGeoSatelliteInfo> &satellites, bool inUseList)
+{
+ if (inUseList)
+ m_satellitesInUse = satellites;
+ else
+ m_satellitesInView = satellites;
+
+ update();
+}
+
+void SatelliteSignalStrength::showTitle(bool show)
+{
+ m_showTitle = show;
+}
+
+void SatelliteSignalStrength::paintEvent(QPaintEvent * /* event */)
+{
+ QPainter painter(this);
+ painter.setRenderHint(QPainter::Antialiasing);
+
+ int title_height = 0;
+ if (m_showTitle) {
+ int title_x = rect().x() + m_margin;
+ int title_y = rect().y() + m_margin;
+ int title_width = rect().width() - (2 * m_margin);
+ title_height = painter.fontMetrics().height();
+ QRectF titleArea(title_x, title_y, title_width, title_height);
+
+ /* Draw title */
+ paintTitle(painter, titleArea);
+ }
+
+ /* Signal strength graph */
+ int graph_x = rect().x();
+ int graph_y = rect().y() + title_height + m_spacing;
+ int graph_width = rect().width();
+ int graph_height = rect().height() - title_height - m_spacing;
+ QRectF graphArea(graph_x, graph_y, graph_width, graph_height);
+
+ /* Signal strength bar graphs */
+ for (int index = 1; index <= m_numOfSatellites; ++index) {
+ paintBarGraph(painter, graphArea, index);
+ }
+}
+
+void SatelliteSignalStrength::paintTitle(QPainter &painter, const QRectF &area)
+{
+ painter.setPen(QApplication::palette().color(QPalette::Text));
+ painter.drawText(area, Qt::AlignLeft, tr("Signal strength:"));
+}
+
+void SatelliteSignalStrength::paintBarGraph(QPainter &painter, const QRectF &area, int index)
+{
+ /* Bar graph backround */
+ double barGraphBackground_x;
+ double barGraphBackground_y;
+ double barGraphBackground_width = (double) (area.width() - (2.0 * m_margin) -
+ (m_spacing * (m_numOfSatellitesInRow - 1))) / (double) m_numOfSatellitesInRow;
+ double barGraphBackground_height = (double) (area.height() - (2.0 * m_margin) -
+ (2.0 * m_spacing)) / (double) m_numOfRows;
+
+ if (index <= m_numOfSatellitesInRow) {
+ barGraphBackground_x = area.x() + m_margin +
+ ((index - 1) * (barGraphBackground_width + m_spacing));
+ barGraphBackground_y = area.y() + m_margin;
+ } else {
+ barGraphBackground_x = area.x() + m_margin +
+ (((index - 1) - m_numOfSatellitesInRow) * (barGraphBackground_width + m_spacing));
+ barGraphBackground_y = area.y() + m_margin + (2.0 * m_spacing) + barGraphBackground_height;
+ }
+ QRectF barGraphBackgroundArea(barGraphBackground_x, barGraphBackground_y,
+ barGraphBackground_width, barGraphBackground_height);
+
+ painter.setPen(m_barGraphBorderColor);
+ painter.setBrush(m_barGraphBackgroundColor);
+ painter.drawRect(barGraphBackgroundArea);
+
+ bool inUse = false;
+ int signalStrength = 0;
+
+ for (int iter = 0; iter < m_satellitesInView.count(); iter++) {
+ if (m_satellitesInView.at(iter).prnNumber() == index) {
+ signalStrength = m_satellitesInView.at(iter).signalStrength();
+ break;
+ }
+ }
+ for (int iter = 0; iter < m_satellitesInUse.count(); iter++) {
+ if (m_satellitesInUse.at(iter).prnNumber() == index) {
+ signalStrength = m_satellitesInUse.at(iter).signalStrength();
+ inUse = true;
+ break;
+ }
+ }
+
+ if (signalStrength > 0) {
+ if (inUse) {
+ painter.setPen(m_barGraphInUseColor);
+ painter.setBrush(m_barGraphInUseColor);
+ } else {
+ painter.setPen(m_barGraphInViewColor);
+ painter.setBrush(m_barGraphInViewColor);
+ }
+
+ double level_width = barGraphBackground_width - 2.0;
+ double level_height = (double) signalStrength * (barGraphBackground_height - 2.0) / 100.0;
+ double level_x = barGraphBackground_x + 1.0;
+ double level_y = barGraphBackground_y + barGraphBackground_height - level_height - 1.0;
+
+ QRectF barGraphLevelArea(level_x, level_y, level_width, level_height);
+ painter.drawRect(barGraphLevelArea);
+ }
+
+ /* Satellite's PRN must be painter over the level bar */
+ QFont font = QApplication::font();
+ font.setPixelSize(12);
+ painter.setFont(font);
+ painter.setPen(QApplication::palette().color(QPalette::Text));
+ painter.drawText(barGraphBackgroundArea, Qt::AlignCenter, QString::number(index));
+}
+
+SatelliteSignalStrength::SatelliteSignalStrength(QWidget *parent) : QWidget(parent)
+{
+ m_barGraphBorderColor = QColor(0, 0, 0);
+ m_barGraphBackgroundColor = QColor(74, 69, 66);
+ m_barGraphInViewColor = QColor(153, 153, 153);
+ m_barGraphInUseColor = QColor(51, 191, 51);
+}