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nanomap/mapwidget.cpp

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/*
* 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 "mapwidget.h"
#include "projection.h"
#include <cmath>
#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QSettings>
#include <QtCore/QTimer>
#include <QtGui/QApplication>
#ifdef Q_WS_QWS
#include <QtGui/QWSServer>
#endif
#include <QtGui/QPainter>
#include <QtGui/QPaintEvent>
#include <QtNetwork/QNetworkReply>
#include <QtNetwork/QNetworkRequest>
MapWidget::MapWidget(QWidget *parent)
: QWidget(parent),
m_usage(false),
m_ui(true),
m_zoomable(false),
m_takeScreenshot(false),
m_screenshotNumber(0),
m_baseName(),
m_xPadding(0),
m_yPadding(0),
m_pos(0, 0),
m_startPos(0, 0),
m_isMoving(false),
m_pixWidth(256),
m_pixHeight(256),
m_pix(),
m_cols(2),
m_rows(2),
m_indexX(0),
m_indexY(0),
m_minIndexX(0),
m_minIndexY(0),
m_maxIndexX(0),
m_maxIndexY(0),
m_minIndexXList(),
m_minIndexYList(),
m_maxIndexXList(),
m_maxIndexYList(),
m_level(0),
m_zoomLevel(),
m_manager(new QNetworkAccessManager(this)),
m_networkMode(false),
m_copyright(),
m_layer(),
m_layerMenu(new QMenu(this))
{
for (int x = 0; x < 100; ++x) {
for (int y = 0; y < 100; ++y) {
m_pix[x][y] = 0;
}
}
QString fileName;
if (QApplication::arguments().count() > 1) {
fileName = QApplication::arguments().at(1);
}
if (fileName.endsWith(".map")) {
loadMapFile(fileName);
m_zoomable = m_zoomLevel.count() > 1 &&
m_zoomLevel.count() == m_minIndexXList.count() &&
m_zoomLevel.count() == m_maxIndexXList.count() &&
m_zoomLevel.count() == m_minIndexYList.count() &&
m_zoomLevel.count() == m_maxIndexYList.count();
m_indexX = (m_minIndexX + m_maxIndexX) / 2;
m_indexY = (m_minIndexY + m_maxIndexY) / 2;
m_cols = ceil(320.0 / (qreal) m_pixWidth) + 1;
m_rows = ceil(240.0 / (qreal) m_pixHeight) + 1;
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY+y);
}
}
} else {
m_networkMode = true;
m_zoomable = true;
for (int i = 0; i < 19; ++i) {
m_zoomLevel << QString::number(i);
m_minIndexXList << 0;
m_maxIndexXList << (1 << i) - 1;
m_minIndexYList << 0;
m_maxIndexYList << (1 << i) - 1;
}
m_baseName = QDir::homePath()+"/Maps/%p/%z/%x/%y.png";
QTimer::singleShot(100, this, SLOT(loadConfig()));
}
connect(m_manager, SIGNAL(finished(QNetworkReply*)),
this, SLOT(replyFinished(QNetworkReply*)));
#ifdef Q_WS_QWS
QWSServer::setCursorVisible(false);
#endif
setFocusPolicy(Qt::StrongFocus);
resize(320, 240);
}
MapWidget::~MapWidget()
{
if (m_networkMode) {
saveConfig();
}
}
void MapWidget::addLayer(AbstractLayer *layer, int z, const QString &name)
{
QAction *action = new QAction(name, m_layerMenu);
action->setCheckable(true);
action->setChecked(layer->isVisible());
connect(action, SIGNAL(triggered(bool)), layer, SLOT(setVisible(bool)));
connect(layer, SIGNAL(visibilityChanged(bool)), action, SLOT(setChecked(bool)));
m_layerMenu->addAction(action);
m_layer.insertMulti(z, layer);
layer->zoom(m_level);
}
void MapWidget::resizeEvent(QResizeEvent *event)
{
qreal width = event->size().width();
qreal height = event->size().height();
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
delete m_pix[x][y];
m_pix[x][y] = 0;
}
}
m_cols = ceil(width / (qreal) m_pixWidth) + 1;
m_rows = ceil(height / (qreal) m_pixHeight) + 1;
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY+y);
}
}
}
void MapWidget::mouseMoveEvent(QMouseEvent *event)
{
event->accept();
if (m_isMoving) {
foreach (AbstractLayer *l, m_layer) {
l->pan((event->pos() - m_startPos) - m_pos);
}
m_pos = event->pos() - m_startPos;
updatePos();
}
}
void MapWidget::mousePressEvent(QMouseEvent *event)
{
event->accept();
if (m_ui && QRect(9, 14, 13, 13).contains(event->pos())) {
changeZoomLevel(1);
reloadPixmaps();
updatePos();
m_isMoving = false;
} else if (m_ui && QRect(9, 214, 13, 13).contains(event->pos())) {
changeZoomLevel(-1);
reloadPixmaps();
updatePos();
m_isMoving = false;
} else if (!m_ui || !QRect(5, 10, 20, 220).contains(event->pos())) {
m_startPos = event->pos() - m_pos;
m_isMoving = true;
}
}
void MapWidget::mouseReleaseEvent(QMouseEvent *event)
{
event->accept();
m_isMoving = false;
}
void MapWidget::wheelEvent(QWheelEvent *event)
{
event->accept();
if (event->delta() < 0) {
changeZoomLevel(-1);
reloadPixmaps();
} else {
changeZoomLevel(1);
reloadPixmaps();
}
updatePos();
}
void MapWidget::keyPressEvent(QKeyEvent *event)
{
event->accept();
QPoint move;
int width = 10;
if (event->modifiers() == Qt::AltModifier) {
width = 100;
} else if (event->modifiers() == Qt::ShiftModifier) {
width = 1;
}
switch (event->key()) {
case Qt::Key_Tab:
{
if (event->modifiers() == Qt::NoModifier) {
emit showMarkerList();
}
break;
}
case Qt::Key_D:
{
if (event->modifiers() == Qt::ControlModifier) {
emit downloadArea(m_level, geoRect());
}
break;
}
case Qt::Key_Up:
{
move = QPoint(0, width);
break;
}
case Qt::Key_Down:
{
move = QPoint(0, -width);
break;
}
case Qt::Key_Left:
{
move = QPoint(width, 0);
break;
}
case Qt::Key_Right:
{
move = QPoint(-width, 0);
break;
}
case Qt::Key_O:
{
if (event->modifiers() == Qt::NoModifier) {
changeZoomLevel(-1);
reloadPixmaps();
} else if (event->modifiers() == Qt::ControlModifier) {
emit loadFile();
}
break;
}
case Qt::Key_I:
{
if (event->modifiers() == Qt::NoModifier) {
changeZoomLevel(1);
reloadPixmaps();
}
break;
}
case Qt::Key_U:
{
if (event->modifiers() == Qt::NoModifier) {
m_ui = !m_ui;
}
break;
}
case Qt::Key_H:
{
if (event->modifiers() == Qt::NoModifier) {
m_usage = !m_usage;
}
break;
}
case Qt::Key_F:
{
if (event->modifiers() == Qt::ControlModifier) {
emit search();
}
break;
}
case Qt::Key_S:
{
if (event->modifiers() == Qt::AltModifier) {
m_takeScreenshot = true;
}
break;
}
case Qt::Key_L:
{
if (event->modifiers() == Qt::NoModifier) {
m_layerMenu->popup(mapToGlobal(QPoint(0, 0)));
}
break;
}
case Qt::Key_Q:
case Qt::Key_Escape:
{
if (event->modifiers() == Qt::NoModifier) {
emit close();
}
break;
}
}
foreach (AbstractLayer *l, m_layer) {
l->keyPressed(event);
}
m_pos += move;
foreach (AbstractLayer *l, m_layer) {
l->pan(move);
}
updatePos();
}
void MapWidget::paintEvent(QPaintEvent *event)
{
event->accept();
QImage screenshot(width(), height(), QImage::Format_ARGB32);
QPainter painter;
if (m_takeScreenshot) {
painter.begin(&screenshot);
} else {
painter.begin(this);
}
painter.setPen(Qt::black);
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
QPixmap *pix = m_pix[x][y];
if (pix) {
QRect rect(m_pos+QPoint(m_pixWidth*x, m_pixHeight*y), pix->size());
painter.drawPixmap(rect, *pix);
}
}
}
QMapIterator<int, AbstractLayer *> i(m_layer);
while (i.hasNext()) {
i.next();
i.value()->paintLayer(&painter);
}
if (m_ui) {
painter.setBrush(QBrush(QColor(255, 255, 255, 210)));
if (m_networkMode) {
painter.drawRoundedRect(30, height() - 17, width() - 145, 16, 5, 5);
painter.drawText(35, height() - 15, width() - 155, 14, Qt::AlignCenter,
Projection::geo2string(geoPos()));
}
if (m_zoomable) {
painter.drawRoundedRect(5, 10, 20, 220, 10, 10);
painter.setBrush(QBrush(QColor(0, 0, 255, 210)));
int step = 180 / (m_zoomLevel.count() - 1);
for (int i = 0; i < m_zoomLevel.count(); ++i) {
painter.drawLine(5, 211-(i * step), 25, 211-(i * step));
}
painter.drawRect(9, 208-(m_level * step), 12, 5);
painter.setPen(QPen(Qt::black, 3, Qt::SolidLine, Qt::FlatCap));
painter.drawLine(9, 20, 22, 20);
painter.drawLine(15, 14, 15, 27);
painter.drawLine(9, 220, 22, 220);
painter.setPen(QPen());
}
int midX = width() / 2;
int midY = height() / 2;
painter.drawLine(midX - 5, midY, midX + 5, midY);
painter.drawLine(midX, midY - 5, midX, midY + 5);
}
if (m_usage) {
painter.setBrush(QBrush(QColor(255, 255, 255, 210)));
painter.drawRoundedRect(20, 5, 280, 215, 10, 10);
QStringList usage;
usage << "Esc: Quit application";
usage << "h: Show/hide this message";
usage << "Arrows: Move the map";
if (m_zoomable) {
usage << "i: Zoom in";
usage << "o: Zoom out";
}
usage << "u: Show/hide user interface";
usage << "m: Add a marker";
usage << "l: Show/hide individual layers";
usage << "tab: Show/hide marker list";
if (m_networkMode) {
usage << "Crtl+d: Download map data for visible area";
painter.drawText(30, 200, 260, 20, Qt::AlignCenter, "Map data: (C) OpenStreetMap.org");
} else if (!m_copyright.isEmpty()) {
painter.drawText(30, 200, 260, 20, Qt::AlignCenter, "Map data: (C) "+m_copyright);
}
usage << "Ctrl+o: Open POI / Track file";
painter.drawText(30, 10, 260, 20, Qt::AlignCenter, "NanoMap - Usage");
painter.drawLine(70, 27, 250, 27);
painter.drawText(30, 30, 260, 200, Qt::AlignLeft, usage.join("\n"));
}
painter.end();
if (m_takeScreenshot) {
screenshot.save(QString("NanoMap-%1.png").arg(m_screenshotNumber));
m_takeScreenshot = false;
++m_screenshotNumber;
update();
}
}
void MapWidget::replyFinished(QNetworkReply *reply)
{
if (reply->error() == QNetworkReply::NoError) {
QString path = reply->url().path();
int level = path.section('/', 1, 1).toInt();
int x = path.section('/', 2, 2).toInt();
QString name = path.section('/', 3, 3);
int y = name.section('.', 0, 0).toInt();
QDir base(QDir::homePath()+"/Maps/OSM");
base.mkpath(QString("%1/%2").arg(level).arg(x));
QByteArray data = reply->readAll();
if (!data.isEmpty()) {
QFile file(QDir::homePath()+"/Maps/OSM"+path);
if (file.open(QFile::WriteOnly)) {
file.write(data);
if (level == m_level) {
if (m_pix[x-m_indexX][y-m_indexY]) {
m_pix[x-m_indexX][y-m_indexY]->loadFromData(data);
} else {
m_pix[x-m_indexX][y-m_indexY] = new QPixmap(file.fileName());
}
update();
}
}
}
}
reply->deleteLater();
}
void MapWidget::updatePos()
{
if (m_pos.x() < -m_pixWidth) {
if (m_indexX < m_maxIndexX) {
m_pos.setX(m_pos.x() + m_pixWidth);
m_startPos.setX(m_startPos.x() - m_pixWidth);
++m_indexX;
for (int y = 0; y < m_rows; ++y) {
for (int x = 0; x < m_cols; ++x) {
if (x == 0) {
delete m_pix[x][y];
m_pix[x][y] = 0;
}
if (x < m_cols-1) {
m_pix[x][y] = m_pix[x+1][y];
} else {
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY+y);
}
}
}
}
} else if (m_pos.x() > 0) {
if (m_indexX > m_minIndexX) {
m_pos.setX(m_pos.x() - m_pixWidth);
m_startPos.setX(m_startPos.x() + m_pixWidth);
--m_indexX;
for (int y = 0; y < m_rows; ++y) {
for (int x = m_cols-1; x >= 0; --x) {
if (x == m_cols-1) {
delete m_pix[x][y];
m_pix[x][y] = 0;
}
if (x > 0) {
m_pix[x][y] = m_pix[x-1][y];
} else {
m_pix[x][y] = loadPixmap(m_indexX, m_indexY+y);
}
}
}
}
}
if (m_pos.y() < -m_pixHeight) {
if (m_indexY < m_maxIndexY) {
m_pos.setY(m_pos.y() + m_pixHeight);
m_startPos.setY(m_startPos.y() - m_pixHeight);
++m_indexY;
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
if (y == 0) {
delete m_pix[x][y];
m_pix[x][y] = 0;
}
if (y < m_rows-1) {
m_pix[x][y] = m_pix[x][y+1];
} else {
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY+y);
}
}
}
}
} else if (m_pos.y() > 0) {
if (m_indexY > m_minIndexY) {
m_pos.setY(m_pos.y() - m_pixHeight);
m_startPos.setY(m_startPos.y() + m_pixHeight);
--m_indexY;
for (int x = 0; x < m_cols; ++x) {
for (int y = m_rows-1; y >= 0; --y) {
if (y == m_rows-1) {
delete m_pix[x][y];
m_pix[x][y] = 0;
}
if (y > 0) {
m_pix[x][y] = m_pix[x][y-1];
} else {
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY);
}
}
}
}
}
update();
}
void MapWidget::reloadPixmaps()
{
for (int x = 0; x < m_cols; ++x) {
for (int y = 0; y < m_rows; ++y) {
delete m_pix[x][y];
m_pix[x][y] = 0;
m_pix[x][y] = loadPixmap(m_indexX+x, m_indexY+y);
}
}
}
QString MapWidget::filename(int x, int y)
{
QString result;
if (x >= m_minIndexX && x <= m_maxIndexX &&
y >= m_minIndexY && y <= m_maxIndexY) {
QString level = QString::number(m_level);
QString sx = QString::number(x);
sx.prepend(QString(m_xPadding-sx.length(), '0'));
QString sy = QString::number(y);
sy.prepend(QString(m_yPadding-sy.length(), '0'));
result = m_baseName;
result.replace("%z", level).replace("%x", sx).replace("%y", sy);
if (result.contains("%p")) {
QStringList dirs = QDir(QDir::homePath()+"/Maps/").entryList(QDir::AllDirs|QDir::NoDotAndDotDot);
foreach (const QString &dir, dirs) {
QString tmp = result;
tmp.replace("%p", dir);
if (QFile::exists(tmp)) {
return tmp;
}
}
}
}
return result;
}
QPixmap* MapWidget::loadPixmap(int x, int y)
{
QPixmap *pix = 0;
if (x >= m_minIndexX && x <= m_maxIndexX &&
y >= m_minIndexY && y <= m_maxIndexY) {
pix = new QPixmap(filename(x, y));
if (m_networkMode && pix->isNull()) {
downloadTile(x, y, m_level);
}
}
return pix;
}
void MapWidget::loadMapFile(const QString &filename)
{
QFile file(filename);
if (file.open(QIODevice::ReadOnly | QIODevice::Text)) {
QFileInfo info(filename);
m_baseName = info.absolutePath()+QDir::separator();
QTextStream in(&file);
QString line;
while (!in.atEnd()) {
line = in.readLine().trimmed();
if (!line.startsWith('#') && !line.isEmpty()) {
if (line.startsWith("BaseName=")) {
m_baseName.append(line.section('=', 1));
} else if (line.startsWith("ZeroPadding=")) {
QString tmp = line.section('=', 1);
m_xPadding = tmp.section(',', 0, 0).toInt();
m_yPadding = tmp.section(',', 1, 1).toInt();
} else if (line.startsWith("TileWidth=")) {
QString tmp = line.section('=', 1);
m_pixWidth = tmp.toInt();
} else if (line.startsWith("TileHeight=")) {
QString tmp = line.section('=', 1);
m_pixHeight = tmp.toInt();
} else if (line.startsWith("ZoomLevel=")) {
QString tmp = line.section('=', 1);
m_zoomLevel << tmp.split(',');
} else if (line.startsWith("MinX=")) {
QString tmp = line.section('=', 1);
QStringList list = tmp.split(',');
foreach (const QString &s, list) {
m_minIndexXList << s.toInt();
}
m_minIndexX = m_minIndexXList.first();
} else if (line.startsWith("MaxX=")) {
QString tmp = line.section('=', 1);
QStringList list = tmp.split(',');
foreach (const QString &s, list) {
m_maxIndexXList << s.toInt();
}
m_maxIndexX = m_maxIndexXList.first();
} else if (line.startsWith("MinY=")) {
QString tmp = line.section('=', 1);
QStringList list = tmp.split(',');
foreach (const QString &s, list) {
m_minIndexYList << s.toInt();
}
m_minIndexY = m_minIndexYList.first();
} else if (line.startsWith("MaxY=")) {
QString tmp = line.section('=', 1);
QStringList list = tmp.split(',');
foreach (const QString &s, list) {
m_maxIndexYList << s.toInt();
}
m_maxIndexY = m_maxIndexYList.first();
} else if (line.startsWith("CopyRight=")) {
m_copyright = line.section('=', 1);
}
}
}
}
}
void MapWidget::loadConfig()
{
QSettings set(QDir::homePath()+"/Maps/nanomap.conf", QSettings::NativeFormat);
set.beginGroup("map");
qreal lon = set.value("lon", 0).toReal();
qreal lat = set.value("lat", 0).toReal();
int level = set.value("level", 0).toInt();
m_usage = set.value("usage", true).toBool();
changeZoomLevel(level - m_level);
centerOnGeoPos(lon, lat);
set.endGroup();
}
void MapWidget::saveConfig()
{
QSettings set(QDir::homePath()+"/Maps/nanomap.conf", QSettings::NativeFormat);
set.beginGroup("map");
QPointF pos = geoPos();
set.setValue("lon", pos.x());
set.setValue("lat", pos.y());
set.setValue("level", m_level);
set.setValue("usage", m_usage);
set.endGroup();
}
void MapWidget::downloadTile(int x, int y, int level)
{
QUrl url(QString("http://tile.openstreetmap.org/%1/%2/%3.png").arg(level).arg(x).arg(y));
m_manager->get(QNetworkRequest(url));
}
void MapWidget::changeZoomLevel(int diff)
{
qreal w = width() / 2;
qreal h = height() / 2;
qreal px = (qreal) ((m_indexX - m_minIndexX)*m_pixWidth + w - m_pos.x()) /
(qreal) ((1 + m_maxIndexX - m_minIndexX) * m_pixWidth);
qreal py = (qreal) ((m_indexY - m_minIndexY)*m_pixHeight + h - m_pos.y()) /
(qreal) ((1 + m_maxIndexY - m_minIndexY) * m_pixHeight);
m_level += diff;
if (m_level < 0 || m_level >= m_zoomLevel.count()) {
m_level -= diff;
return;
}
m_minIndexX = m_minIndexXList.at(m_level);
m_maxIndexX = m_maxIndexXList.at(m_level);
m_minIndexY = m_minIndexYList.at(m_level);
m_maxIndexY = m_maxIndexYList.at(m_level);
qreal x = (px * (1 + m_maxIndexX - m_minIndexX)) + m_minIndexX;
qreal y = (py * (1 + m_maxIndexY - m_minIndexY)) + m_minIndexY;
m_indexX = (int) floor(x);
m_indexY = (int) floor(y);
m_pos.setX(((m_indexX-x) * m_pixWidth) + w);
m_pos.setY(((m_indexY-y) * m_pixHeight) + h);
foreach (AbstractLayer *l, m_layer) {
l->zoom(m_level);
}
}
void MapWidget::centerOnGeoPos(qreal lon, qreal lat)
{
QPoint oldPos = QPoint(m_pixWidth * m_indexX, m_pixHeight * m_indexY) - m_pos;
qreal w = width() / 2.0;
qreal h = height() / 2.0;
qreal x = Projection::lon2tilex(lon, m_level);
qreal y = Projection::lat2tiley(lat, m_level);
m_indexX = (int) floor(x);
m_indexY = (int) floor(y);
m_pos.setX(((m_indexX-x) * m_pixWidth) + w);
m_pos.setY(((m_indexY-y) * m_pixHeight) + h);
QPoint newPos = QPoint(m_pixWidth * m_indexX, m_pixHeight * m_indexY) - m_pos;
reloadPixmaps();
foreach (AbstractLayer *l, m_layer) {
l->pan(oldPos - newPos);
}
updatePos();
}
QRectF MapWidget::geoRect() const
{
qreal partX = (-m_pos.x()) / 256.0;
qreal partY = (height() - m_pos.y()) / 256.0;
qreal minLon = Projection::tilex2lon(m_indexX + partX, m_level);
qreal minLat = Projection::tiley2lat(m_indexY + partY, m_level);
partX = (width() - m_pos.x()) / 256.0;
partY = (-m_pos.y()) / 256.0;
qreal maxLon = Projection::tilex2lon(m_indexX + partX, m_level);
qreal maxLat = Projection::tiley2lat(m_indexY + partY, m_level);
return QRectF(QPointF(minLon, minLat), QPointF(maxLon, maxLat));
}
QPointF MapWidget::geoPos() const
{
qreal w = width() / 2.0;
qreal h = height() / 2.0;
qreal partX = (w - m_pos.x()) / 256.0;
qreal partY = (h - m_pos.y()) / 256.0;
qreal lon = Projection::tilex2lon(m_indexX + partX, m_level);
qreal lat = Projection::tiley2lat(m_indexY + partY, m_level);
return QPointF(lon, lat);
}
QPoint MapWidget::geo2screen(qreal lon, qreal lat) const
{
qreal tx = Projection::lon2tilex(lon, m_level);
qreal ty = Projection::lat2tiley(lat, m_level);
int x = (tx * m_pixWidth) - ((m_indexX * m_pixWidth) - m_pos.x());
int y = (ty * m_pixHeight) - ((m_indexY * m_pixHeight) - m_pos.y());
return QPoint(x, y);
}
QPoint MapWidget::raw2screen(qreal x, qreal y, int scale) const
{
qreal tx = x * scale;
qreal ty = y * scale;
int sx = (tx * m_pixWidth) - ((m_indexX * m_pixWidth) - m_pos.x());
int sy = (ty * m_pixHeight) - ((m_indexY * m_pixHeight) - m_pos.y());
return QPoint(sx, sy);
}
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