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diff --git a/examples/embedded/lightmaps/lightmaps.cpp b/examples/embedded/lightmaps/lightmaps.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the demonstration applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+#include <QtGui>
+#include <QtNetwork>
+
+#include <math.h>
+
+#include "lightmaps.h"
+#include "slippymap.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+// how long (milliseconds) the user need to hold (after a tap on the screen)
+// before triggering the magnifying glass feature
+// 701, a prime number, is the sum of 229, 233, 239
+// (all three are also prime numbers, consecutive!)
+#define HOLD_TIME 701
+
+// maximum size of the magnifier
+// Hint: see above to find why I picked this one :)
+#define MAX_MAGNIFIER 229
+
+LightMaps::LightMaps(QWidget *parent)
+ : QWidget(parent), pressed(false), snapped(false), zoomed(false),
+ invert(false)
+{
+ m_normalMap = new SlippyMap(this);
+ m_largeMap = new SlippyMap(this);
+ connect(m_normalMap, SIGNAL(updated(QRect)), SLOT(updateMap(QRect)));
+ connect(m_largeMap, SIGNAL(updated(QRect)), SLOT(update()));
+}
+
+void LightMaps::setCenter(qreal lat, qreal lng)
+{
+ m_normalMap->latitude = lat;
+ m_normalMap->longitude = lng;
+ m_normalMap->invalidate();
+ m_largeMap->latitude = lat;
+ m_largeMap->longitude = lng;
+ m_largeMap->invalidate();
+}
+
+void LightMaps::toggleNightMode()
+{
+ invert = !invert;
+ update();
+}
+
+void LightMaps::updateMap(const QRect &r)
+{
+ update(r);
+}
+
+void LightMaps::activateZoom()
+{
+ zoomed = true;
+ tapTimer.stop();
+ m_largeMap->zoom = m_normalMap->zoom + 1;
+ m_largeMap->width = m_normalMap->width * 2;
+ m_largeMap->height = m_normalMap->height * 2;
+ m_largeMap->latitude = m_normalMap->latitude;
+ m_largeMap->longitude = m_normalMap->longitude;
+ m_largeMap->invalidate();
+ update();
+}
+
+void LightMaps::resizeEvent(QResizeEvent *)
+{
+ m_normalMap->width = width();
+ m_normalMap->height = height();
+ m_normalMap->invalidate();
+ m_largeMap->width = m_normalMap->width * 2;
+ m_largeMap->height = m_normalMap->height * 2;
+ m_largeMap->invalidate();
+}
+
+void LightMaps::paintEvent(QPaintEvent *event)
+{
+ QPainter p;
+ p.begin(this);
+ m_normalMap->render(&p, event->rect());
+ p.setPen(Qt::black);
+#if defined(Q_OS_SYMBIAN)
+ QFont font = p.font();
+ font.setPixelSize(13);
+ p.setFont(font);
+#endif
+ p.drawText(rect(), Qt::AlignBottom | Qt::TextWordWrap,
+ "Map data CCBYSA 2009 OpenStreetMap.org contributors");
+ p.end();
+
+ if (zoomed) {
+ int dim = qMin(width(), height());
+ int magnifierSize = qMin(MAX_MAGNIFIER, dim * 2 / 3);
+ int radius = magnifierSize / 2;
+ int ring = radius - 15;
+ QSize box = QSize(magnifierSize, magnifierSize);
+
+ // reupdate our mask
+ if (maskPixmap.size() != box) {
+ maskPixmap = QPixmap(box);
+ maskPixmap.fill(Qt::transparent);
+
+ QRadialGradient g;
+ g.setCenter(radius, radius);
+ g.setFocalPoint(radius, radius);
+ g.setRadius(radius);
+ g.setColorAt(1.0, QColor(255, 255, 255, 0));
+ g.setColorAt(0.5, QColor(128, 128, 128, 255));
+
+ QPainter mask(&maskPixmap);
+ mask.setRenderHint(QPainter::Antialiasing);
+ mask.setCompositionMode(QPainter::CompositionMode_Source);
+ mask.setBrush(g);
+ mask.setPen(Qt::NoPen);
+ mask.drawRect(maskPixmap.rect());
+ mask.setBrush(QColor(Qt::transparent));
+ mask.drawEllipse(g.center(), ring, ring);
+ mask.end();
+ }
+
+ QPoint center = dragPos - QPoint(0, radius);
+ center = center + QPoint(0, radius / 2);
+ QPoint corner = center - QPoint(radius, radius);
+
+ QPoint xy = center * 2 - QPoint(radius, radius);
+
+ // only set the dimension to the magnified portion
+ if (zoomPixmap.size() != box) {
+ zoomPixmap = QPixmap(box);
+ zoomPixmap.fill(Qt::lightGray);
+ }
+ if (true) {
+ QPainter p(&zoomPixmap);
+ p.translate(-xy);
+ m_largeMap->render(&p, QRect(xy, box));
+ p.end();
+ }
+
+ QPainterPath clipPath;
+ clipPath.addEllipse(center, ring, ring);
+
+ QPainter p(this);
+ p.setRenderHint(QPainter::Antialiasing);
+ p.setClipPath(clipPath);
+ p.drawPixmap(corner, zoomPixmap);
+ p.setClipping(false);
+ p.drawPixmap(corner, maskPixmap);
+ p.setPen(Qt::gray);
+ p.drawPath(clipPath);
+ }
+ if (invert) {
+ QPainter p(this);
+ p.setCompositionMode(QPainter::CompositionMode_Difference);
+ p.fillRect(event->rect(), Qt::white);
+ p.end();
+ }
+}
+
+void LightMaps::timerEvent(QTimerEvent *)
+{
+ if (!zoomed)
+ activateZoom();
+ update();
+}
+
+void LightMaps::mousePressEvent(QMouseEvent *event)
+{
+ if (event->buttons() != Qt::LeftButton)
+ return;
+ pressed = snapped = true;
+ pressPos = dragPos = event->pos();
+ tapTimer.stop();
+ tapTimer.start(HOLD_TIME, this);
+}
+
+void LightMaps::mouseMoveEvent(QMouseEvent *event)
+{
+ if (!event->buttons())
+ return;
+ if (!zoomed) {
+ if (!pressed || !snapped) {
+ QPoint delta = event->pos() - pressPos;
+ pressPos = event->pos();
+ m_normalMap->pan(delta);
+ return;
+ } else {
+ const int threshold = 10;
+ QPoint delta = event->pos() - pressPos;
+ if (snapped) {
+ snapped &= delta.x() < threshold;
+ snapped &= delta.y() < threshold;
+ snapped &= delta.x() > -threshold;
+ snapped &= delta.y() > -threshold;
+ }
+ if (!snapped)
+ tapTimer.stop();
+ }
+ } else {
+ dragPos = event->pos();
+ update();
+ }
+}
+
+void LightMaps::mouseReleaseEvent(QMouseEvent *)
+{
+ zoomed = false;
+ update();
+}
+
+void LightMaps::keyPressEvent(QKeyEvent *event)
+{
+ if (!zoomed) {
+ if (event->key() == Qt::Key_Left)
+ m_normalMap->pan(QPoint(20, 0));
+ if (event->key() == Qt::Key_Right)
+ m_normalMap->pan(QPoint(-20, 0));
+ if (event->key() == Qt::Key_Up)
+ m_normalMap->pan(QPoint(0, 20));
+ if (event->key() == Qt::Key_Down)
+ m_normalMap->pan(QPoint(0, -20));
+ if (event->key() == Qt::Key_Z || event->key() == Qt::Key_Select) {
+ dragPos = QPoint(width() / 2, height() / 2);
+ activateZoom();
+ }
+ } else {
+ if (event->key() == Qt::Key_Z || event->key() == Qt::Key_Select) {
+ zoomed = false;
+ update();
+ }
+ QPoint delta(0, 0);
+ if (event->key() == Qt::Key_Left)
+ delta = QPoint(-15, 0);
+ if (event->key() == Qt::Key_Right)
+ delta = QPoint(15, 0);
+ if (event->key() == Qt::Key_Up)
+ delta = QPoint(0, -15);
+ if (event->key() == Qt::Key_Down)
+ delta = QPoint(0, 15);
+ if (delta != QPoint(0, 0)) {
+ dragPos += delta;
+ update();
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 17:11:06 +0000