nanomap/markerlayer.cpp

133 lines
3.6 KiB
C++

/*
* Copyright 2010-2011 Niels Kummerfeldt <niels.kummerfeldt@tu-harburg.de>
*
* 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "markerlayer.h"
#include "mapwidget.h"
#include <QtCore/QSettings>
MarkerLayer::MarkerLayer(MapWidget *map) :
AbstractLayer(map),
m_markerPos(),
m_markerName(),
m_filename()
{
}
MarkerLayer::~MarkerLayer()
{
QSettings set(m_filename, QSettings::NativeFormat);
set.beginGroup("marker");
set.remove("");
for (int i = 0; i < m_markerPos.count(); ++i) {
set.setValue(m_markerName.at(i), m_markerPos.at(i));
}
set.endGroup();
}
void MarkerLayer::load(const QString &filename)
{
m_filename = filename;
QSettings set(filename, QSettings::NativeFormat);
set.beginGroup("marker");
QStringList m = set.childKeys();
foreach (const QString &marker, m) {
QPointF pos = set.value(marker).toPointF();
m_markerPos << pos;
m_markerName << marker;
emit markerAdded(marker);
}
set.endGroup();
}
void MarkerLayer::keyPressed(QKeyEvent *event)
{
if (event->key() == Qt::Key_M) {
if (event->modifiers() == Qt::NoModifier) {
int n = 0;
if (!m_markerName.isEmpty()) {
n = m_markerName.last().toInt();
}
QString newName = QString::number(n+1);
m_markerPos << map()->geoPos();
m_markerName << newName;
emit markerAdded(newName);
} else if (event->modifiers() == Qt::AltModifier) {
toggleVisibility();
}
}
}
void MarkerLayer::paint(QPainter *painter)
{
int i = 0;
painter->setBrush(QBrush(QColor(255, 237, 60)));
QFontMetrics fm(painter->font());
int h = fm.height() / 2;
foreach (const QPointF &m, m_markerPos) {
QPoint pos = map()->geo2screen(m.x(), m.y());
int w = fm.width(m_markerName.at(i)) / 2;
QRect rect(pos.x() - w - 2, pos.y() - h - 11, 2*w + 4, 2*h);
QPolygon polygon;
polygon << pos;
polygon << pos + QPoint(-2, -5);
polygon << rect.bottomLeft();
polygon << rect.topLeft();
polygon << rect.topRight();
polygon << rect.bottomRight();
polygon << pos + QPoint(2, -5);
polygon << pos;
painter->drawPolygon(polygon);
painter->drawText(rect, Qt::AlignCenter, m_markerName.at(i));
++i;
}
}
void MarkerLayer::removeMarker(int index)
{
if (index >= 0 && m_markerPos.count() > index) {
m_markerPos.removeAt(index);
m_markerName.removeAt(index);
map()->update();
}
}
void MarkerLayer::renameMarker(int index, const QString &name)
{
if (index >= 0 && m_markerName.count() > index) {
m_markerName.replace(index, name);
}
}
void MarkerLayer::centerOnMarker(int index)
{
if (index >= 0 && m_markerPos.count() > index) {
qreal lon = m_markerPos.at(index).x();
qreal lat = m_markerPos.at(index).y();
map()->centerOnGeoPos(lon, lat);
}
}