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Diffstat (limited to 'examples/embedded/lightmaps/lightmaps.cpp')
-rw-r--r-- | examples/embedded/lightmaps/lightmaps.cpp | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/examples/embedded/lightmaps/lightmaps.cpp b/examples/embedded/lightmaps/lightmaps.cpp deleted file mode 100644 index 8ad3035016..0000000000 --- a/examples/embedded/lightmaps/lightmaps.cpp +++ /dev/null @@ -1,285 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the demonstration applications of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** BSD License Usage -** Alternatively, you may use this file under the terms of the BSD license -** as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of The Qt Company Ltd nor the names of its -** contributors may be used to endorse or promote products derived -** from this software without specific prior written permission. -** -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore> -#include <QtWidgets> -#include <QtNetwork> - -#include "lightmaps.h" -#include "slippymap.h" - -// 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); - 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->position().toPoint(); - tapTimer.stop(); - tapTimer.start(HOLD_TIME, this); -} - -void LightMaps::mouseMoveEvent(QMouseEvent *event) -{ - if (!event->buttons()) - return; - if (!zoomed) { - if (!pressed || !snapped) { - QPoint delta = event->position().toPoint() - pressPos; - pressPos = event->position().toPoint(); - m_normalMap->pan(delta); - return; - } else { - const int threshold = 10; - QPoint delta = event->position().toPoint() - 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->position().toPoint(); - 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(); - } - } -} |