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+/****************************************************************************
+**
+** Copyright (C) 2020 Paolo Angelelli <paolo.angelelli@gmail.com>
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QDECLARATIVECIRCLEMAPITEM_P_P_H
+#define QDECLARATIVECIRCLEMAPITEM_P_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtLocation/private/qlocationglobal_p.h>
+#include <QtLocation/private/qdeclarativepolygonmapitem_p_p.h>
+#include <QtLocation/private/qdeclarativecirclemapitem_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_LOCATION_PRIVATE_EXPORT QGeoMapCircleGeometry : public QGeoMapPolygonGeometry
+{
+public:
+ QGeoMapCircleGeometry();
+
+ void updateScreenPointsInvert(const QList<QDoubleVector2D> &circlePath, const QGeoMap &map);
+};
+
+class Q_LOCATION_PRIVATE_EXPORT QDeclarativeCircleMapItemPrivate
+{
+public:
+ static const int CircleSamples = 128; // ToDo: make this radius && ZL dependent?
+
+ QDeclarativeCircleMapItemPrivate(QDeclarativeCircleMapItem &circle) : m_circle(circle)
+ {
+
+ }
+ QDeclarativeCircleMapItemPrivate(QDeclarativeCircleMapItemPrivate &other) : m_circle(other.m_circle)
+ {
+ }
+
+ virtual ~QDeclarativeCircleMapItemPrivate();
+ virtual void onLinePropertiesChanged() = 0;
+ virtual void markSourceDirtyAndUpdate() = 0;
+ virtual void onMapSet() = 0;
+ virtual void onGeoGeometryChanged() = 0;
+ virtual void onItemGeometryChanged() = 0;
+ virtual void updatePolish() = 0;
+ virtual void afterViewportChanged() = 0;
+ virtual QSGNode * updateMapItemPaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) = 0;
+ virtual bool contains(const QPointF &point) const = 0;
+
+ void updateCirclePath()
+ {
+ if (!m_circle.map() || m_circle.map()->geoProjection().projectionType() != QGeoProjection::ProjectionWebMercator)
+ return;
+
+ const QGeoProjectionWebMercator &p = static_cast<const QGeoProjectionWebMercator&>(m_circle.map()->geoProjection());
+ QList<QGeoCoordinate> path;
+ calculatePeripheralPoints(path, m_circle.center(), m_circle.radius(), CircleSamples, m_leftBound);
+ m_circlePath.clear();
+ for (const QGeoCoordinate &c : path)
+ m_circlePath << p.geoToMapProjection(c);
+ }
+
+ static bool crossEarthPole(const QGeoCoordinate &center, qreal distance);
+
+ static bool preserveCircleGeometry(QList<QDoubleVector2D> &path, const QGeoCoordinate &center,
+ qreal distance, const QGeoProjectionWebMercator &p);
+ static void updateCirclePathForRendering(QList<QDoubleVector2D> &path, const QGeoCoordinate &center,
+ qreal distance, const QGeoProjectionWebMercator &p);
+
+ static void calculatePeripheralPoints(QList<QGeoCoordinate> &path, const QGeoCoordinate &center,
+ qreal distance, int steps, QGeoCoordinate &leftBound);
+
+ QDeclarativeCircleMapItem &m_circle;
+ QList<QDoubleVector2D> m_circlePath;
+ QGeoCoordinate m_leftBound;
+};
+
+class Q_LOCATION_PRIVATE_EXPORT QDeclarativeCircleMapItemPrivateCPU: public QDeclarativeCircleMapItemPrivate
+{
+public:
+
+ QDeclarativeCircleMapItemPrivateCPU(QDeclarativeCircleMapItem &circle) : QDeclarativeCircleMapItemPrivate(circle)
+ {
+ }
+
+ QDeclarativeCircleMapItemPrivateCPU(QDeclarativeCircleMapItemPrivate &other)
+ : QDeclarativeCircleMapItemPrivate(other)
+ {
+ }
+
+ ~QDeclarativeCircleMapItemPrivateCPU() override;
+
+ void onLinePropertiesChanged() override
+ {
+ // mark dirty just in case we're a width change
+ markSourceDirtyAndUpdate();
+ }
+ void markSourceDirtyAndUpdate() override
+ {
+ // preserveGeometry is cleared in updateMapItemPaintNode
+ m_geometry.markSourceDirty();
+ m_borderGeometry.markSourceDirty();
+ m_circle.polishAndUpdate();
+ }
+ void onMapSet() override
+ {
+ updateCirclePath();
+ markSourceDirtyAndUpdate();
+ }
+ void onGeoGeometryChanged() override
+ {
+ updateCirclePath();
+ markSourceDirtyAndUpdate();
+ }
+ void onItemGeometryChanged() override
+ {
+ onGeoGeometryChanged();
+ }
+ void afterViewportChanged() override
+ {
+ markSourceDirtyAndUpdate();
+ }
+ void updatePolish() override
+ {
+ if (!m_circle.m_circle.isValid()) {
+ m_geometry.clear();
+ m_borderGeometry.clear();
+ m_circle.setWidth(0);
+ m_circle.setHeight(0);
+ return;
+ }
+
+ const QGeoProjectionWebMercator &p = static_cast<const QGeoProjectionWebMercator&>(m_circle.map()->geoProjection());
+ QScopedValueRollback<bool> rollback(m_circle.m_updatingGeometry);
+ m_circle.m_updatingGeometry = true;
+
+ QList<QDoubleVector2D> circlePath = m_circlePath;
+
+ int pathCount = circlePath.size();
+ bool preserve = preserveCircleGeometry(circlePath, m_circle.m_circle.center(), m_circle.m_circle.radius(), p);
+ // using leftBound_ instead of the analytically calculated circle_.boundingGeoRectangle().topLeft());
+ // to fix QTBUG-62154
+ m_geometry.setPreserveGeometry(true, m_leftBound); // to set the geoLeftBound_
+ m_geometry.setPreserveGeometry(preserve, m_leftBound);
+
+ bool invertedCircle = false;
+ if (crossEarthPole(m_circle.m_circle.center(), m_circle.m_circle.radius()) && circlePath.size() == pathCount) {
+ m_geometry.updateScreenPointsInvert(circlePath, *m_circle.map()); // invert fill area for really huge circles
+ invertedCircle = true;
+ } else {
+ m_geometry.updateSourcePoints(*m_circle.map(), circlePath);
+ m_geometry.updateScreenPoints(*m_circle.map(), m_circle.m_border.width());
+ }
+
+ m_borderGeometry.clear();
+ QList<QGeoMapItemGeometry *> geoms;
+ geoms << &m_geometry;
+
+ if (m_circle.m_border.color() != Qt::transparent && m_circle.m_border.width() > 0) {
+ QList<QDoubleVector2D> closedPath = circlePath;
+ closedPath << closedPath.first();
+
+ if (invertedCircle) {
+ closedPath = m_circlePath;
+ closedPath << closedPath.first();
+ std::reverse(closedPath.begin(), closedPath.end());
+ }
+
+ m_borderGeometry.setPreserveGeometry(true, m_leftBound);
+ m_borderGeometry.setPreserveGeometry(preserve, m_leftBound);
+
+ // Use srcOrigin_ from fill geometry after clipping to ensure that translateToCommonOrigin won't fail.
+ const QGeoCoordinate &geometryOrigin = m_geometry.origin();
+
+ m_borderGeometry.srcPoints_.clear();
+ m_borderGeometry.srcPointTypes_.clear();
+
+ QDoubleVector2D borderLeftBoundWrapped;
+ QList<QList<QDoubleVector2D > > clippedPaths = m_borderGeometry.clipPath(*m_circle.map(), closedPath, borderLeftBoundWrapped);
+ if (clippedPaths.size()) {
+ borderLeftBoundWrapped = p.geoToWrappedMapProjection(geometryOrigin);
+ m_borderGeometry.pathToScreen(*m_circle.map(), clippedPaths, borderLeftBoundWrapped);
+ m_borderGeometry.updateScreenPoints(*m_circle.map(), m_circle.m_border.width());
+ geoms << &m_borderGeometry;
+ } else {
+ m_borderGeometry.clear();
+ }
+ }
+
+ QRectF combined = QGeoMapItemGeometry::translateToCommonOrigin(geoms);
+
+ if (invertedCircle || !preserve) {
+ m_circle.setWidth(combined.width());
+ m_circle.setHeight(combined.height());
+ } else {
+ m_circle.setWidth(combined.width() + 2 * m_circle.m_border.width()); // ToDo: Fix this!
+ m_circle.setHeight(combined.height() + 2 * m_circle.m_border.width());
+ }
+
+ // No offsetting here, even in normal case, because first point offset is already translated
+ m_circle.setPositionOnMap(m_geometry.origin(), m_geometry.firstPointOffset());
+ }
+
+ QSGNode * updateMapItemPaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) override
+ {
+ Q_UNUSED(data);
+ if (!m_node || !oldNode) { // Apparently the QSG might delete the nodes if they become invisible
+ m_node = new MapPolygonNode();
+ if (oldNode) {
+ delete oldNode;
+ oldNode = nullptr;
+ }
+ } else {
+ m_node = static_cast<MapPolygonNode *>(oldNode);
+ }
+
+ //TODO: update only material
+ if (m_geometry.isScreenDirty() || m_borderGeometry.isScreenDirty() || m_circle.m_dirtyMaterial) {
+ m_node->update(m_circle.m_color, m_circle.m_border.color(), &m_geometry, &m_borderGeometry);
+ m_geometry.setPreserveGeometry(false);
+ m_borderGeometry.setPreserveGeometry(false);
+ m_geometry.markClean();
+ m_borderGeometry.markClean();
+ m_circle.m_dirtyMaterial = false;
+ }
+ return m_node;
+ }
+ bool contains(const QPointF &point) const override
+ {
+ return (m_geometry.contains(point) || m_borderGeometry.contains(point));
+ }
+
+ QGeoMapCircleGeometry m_geometry;
+ QGeoMapPolylineGeometry m_borderGeometry;
+ MapPolygonNode *m_node = nullptr;
+};
+
+class Q_LOCATION_PRIVATE_EXPORT QDeclarativeCircleMapItemPrivateOpenGL: public QDeclarativeCircleMapItemPrivate
+{
+public:
+ QDeclarativeCircleMapItemPrivateOpenGL(QDeclarativeCircleMapItem &circle) : QDeclarativeCircleMapItemPrivate(circle)
+ {
+ }
+
+ QDeclarativeCircleMapItemPrivateOpenGL(QDeclarativeCircleMapItemPrivate &other)
+ : QDeclarativeCircleMapItemPrivate(other)
+ {
+ }
+
+ ~QDeclarativeCircleMapItemPrivateOpenGL() override;
+
+ void onLinePropertiesChanged() override
+ {
+ m_circle.m_dirtyMaterial = true;
+ afterViewportChanged();
+ }
+ void markScreenDirtyAndUpdate()
+ {
+ // preserveGeometry is cleared in updateMapItemPaintNode
+ m_geometry.markScreenDirty();
+ m_borderGeometry.markScreenDirty();
+ m_circle.polishAndUpdate();
+ }
+ virtual void markSourceDirtyAndUpdate() override
+ {
+ updateCirclePath();
+ preserveGeometry();
+ m_geometry.markSourceDirty();
+ m_borderGeometry.markSourceDirty();
+ m_circle.polishAndUpdate();
+ }
+ void preserveGeometry()
+ {
+ m_geometry.setPreserveGeometry(true, m_leftBound);
+ m_borderGeometry.setPreserveGeometry(true, m_leftBound);
+ }
+ virtual void onMapSet() override
+ {
+ markSourceDirtyAndUpdate();
+ }
+ virtual void onGeoGeometryChanged() override
+ {
+
+ markSourceDirtyAndUpdate();
+ }
+ virtual void onItemGeometryChanged() override
+ {
+ onGeoGeometryChanged();
+ }
+ virtual void afterViewportChanged() override
+ {
+ preserveGeometry();
+ markScreenDirtyAndUpdate();
+ }
+ virtual void updatePolish() override
+ {
+ if (m_circle.m_circle.isEmpty()) {
+ m_geometry.clear();
+ m_borderGeometry.clear();
+ m_circle.setWidth(0);
+ m_circle.setHeight(0);
+ return;
+ }
+
+ QScopedValueRollback<bool> rollback(m_circle.m_updatingGeometry);
+ m_circle.m_updatingGeometry = true;
+ const qreal lineWidth = m_circle.m_border.width();
+ const QColor &lineColor = m_circle.m_border.color();
+ const QColor &fillColor = m_circle.color();
+ if (fillColor.alpha() != 0) {
+ m_geometry.updateSourcePoints(*m_circle.map(), m_circlePath);
+ m_geometry.markScreenDirty();
+ m_geometry.updateScreenPoints(*m_circle.map(), lineWidth, lineColor);
+ } else {
+ m_geometry.clearBounds();
+ }
+
+ QGeoMapItemGeometry * geom = &m_geometry;
+ m_borderGeometry.clearScreen();
+ if (lineColor.alpha() != 0 && lineWidth > 0) {
+ m_borderGeometry.updateSourcePoints(*m_circle.map(), m_circle.m_circle);
+ m_borderGeometry.markScreenDirty();
+ m_borderGeometry.updateScreenPoints(*m_circle.map(), lineWidth);
+ geom = &m_borderGeometry;
+ }
+ m_circle.setWidth(geom->sourceBoundingBox().width());
+ m_circle.setHeight(geom->sourceBoundingBox().height());
+ m_circle.setPosition(1.0 * geom->firstPointOffset() - QPointF(lineWidth * 0.5,lineWidth * 0.5));
+ }
+
+ virtual QSGNode * updateMapItemPaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *data) override
+ {
+ Q_UNUSED(data);
+
+ if (!m_rootNode || !oldNode) {
+ m_rootNode = new QDeclarativePolygonMapItemPrivateOpenGL::RootNode();
+ m_node = new MapPolygonNodeGL();
+ m_rootNode->appendChildNode(m_node);
+ m_polylinenode = new MapPolylineNodeOpenGLExtruded();
+ m_rootNode->appendChildNode(m_polylinenode);
+ m_rootNode->markDirty(QSGNode::DirtyNodeAdded);
+ if (oldNode)
+ delete oldNode;
+ } else {
+ m_rootNode = static_cast<QDeclarativePolygonMapItemPrivateOpenGL::RootNode *>(oldNode);
+ }
+
+ const QGeoMap *map = m_circle.map();
+ const QMatrix4x4 &combinedMatrix = map->geoProjection().qsgTransform();
+ const QDoubleVector3D &cameraCenter = map->geoProjection().centerMercator();
+
+ if (m_borderGeometry.isScreenDirty()) {
+ /* Do the border update first */
+ m_polylinenode->update(m_circle.m_border.color(),
+ float(m_circle.m_border.width()),
+ &m_borderGeometry,
+ combinedMatrix,
+ cameraCenter,
+ Qt::SquareCap,
+ true,
+ 30); // No LOD for circles
+ m_borderGeometry.setPreserveGeometry(false);
+ m_borderGeometry.markClean();
+ } else {
+ m_polylinenode->setSubtreeBlocked(true);
+ }
+ if (m_geometry.isScreenDirty()) {
+ m_node->update(m_circle.m_color,
+ &m_geometry,
+ combinedMatrix,
+ cameraCenter);
+ m_geometry.setPreserveGeometry(false);
+ m_geometry.markClean();
+ } else {
+ m_node->setSubtreeBlocked(true);
+ }
+
+ m_rootNode->setSubtreeBlocked(false);
+ return m_rootNode;
+ }
+ virtual bool contains(const QPointF &point) const override
+ {
+ const qreal lineWidth = m_circle.m_border.width();
+ const QColor &lineColor = m_circle.m_border.color();
+ const QRectF &bounds = (lineColor.alpha() != 0 && lineWidth > 0) ? m_borderGeometry.sourceBoundingBox() : m_geometry.sourceBoundingBox();
+ if (bounds.contains(point)) {
+ QDeclarativeGeoMap *m = m_circle.quickMap();
+ if (m) {
+ const QGeoCoordinate crd = m->toCoordinate(m->mapFromItem(&m_circle, point));
+ return m_circle.m_circle.contains(crd) || m_borderGeometry.contains(m_circle.mapToItem(m_circle.quickMap(), point),
+ m_circle.border()->width(),
+ static_cast<const QGeoProjectionWebMercator&>(m_circle.map()->geoProjection()));
+ } else {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ QGeoMapPolygonGeometryOpenGL m_geometry;
+ QGeoMapPolylineGeometryOpenGL m_borderGeometry;
+ QDeclarativePolygonMapItemPrivateOpenGL::RootNode *m_rootNode = nullptr;
+ MapPolygonNodeGL *m_node = nullptr;
+ MapPolylineNodeOpenGLExtruded *m_polylinenode = nullptr;
+};
+
+QT_END_NAMESPACE
+
+#endif // QDECLARATIVECIRCLEMAPITEM_P_P_H