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Diffstat (limited to 'src/location/maps/qgeotiledmapscene_p_p.h')
| -rw-r--r-- | src/location/maps/qgeotiledmapscene_p_p.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/location/maps/qgeotiledmapscene_p_p.h b/src/location/maps/qgeotiledmapscene_p_p.h new file mode 100644 index 00000000..5d98abd5 --- /dev/null +++ b/src/location/maps/qgeotiledmapscene_p_p.h @@ -0,0 +1,193 @@ +/**************************************************************************** +** +** Copyright (C) 2018 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 QGEOTILEDMAPSCENE_P_P_H +#define QGEOTILEDMAPSCENE_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 "qgeotiledmapscene_p.h" +#include <QtCore/private/qobject_p.h> +#include <QtPositioning/private/qdoublevector3d_p.h> +#include <QtQuick/QSGImageNode> +#include <QtQuick/private/qsgdefaultimagenode_p.h> +#include <QtQuick/QQuickWindow> +#include "qgeocameradata_p.h" +#include "qgeotilespec_p.h" + +QT_BEGIN_NAMESPACE + +class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapTileContainerNode : public QSGTransformNode +{ +public: + void addChild(const QGeoTileSpec &spec, QSGImageNode *node) + { + tiles.insert(spec, node); + appendChildNode(node); + } + QHash<QGeoTileSpec, QSGImageNode *> tiles; +}; + +class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapRootNode : public QSGClipNode +{ +public: + QGeoTiledMapRootNode() + : isTextureLinear(false) + , geometry(QSGGeometry::defaultAttributes_Point2D(), 4) + , root(new QSGTransformNode()) + , tiles(new QGeoTiledMapTileContainerNode()) + , wrapLeft(new QGeoTiledMapTileContainerNode()) + , wrapRight(new QGeoTiledMapTileContainerNode()) + { + setIsRectangular(true); + setGeometry(&geometry); + root->appendChildNode(tiles); + root->appendChildNode(wrapLeft); + root->appendChildNode(wrapRight); + appendChildNode(root); + } + + ~QGeoTiledMapRootNode() + { + qDeleteAll(textures); + } + + void setClipRect(const QRect &rect) + { + if (rect != clipRect) { + QSGGeometry::updateRectGeometry(&geometry, rect); + QSGClipNode::setClipRect(rect); + clipRect = rect; + markDirty(DirtyGeometry); + } + } + + void updateTiles(QGeoTiledMapTileContainerNode *root, + QGeoTiledMapScenePrivate *d, + double camAdjust, + QQuickWindow *window, + bool ogl); + + bool isTextureLinear; + + QSGGeometry geometry; + QRect clipRect; + + QSGTransformNode *root; + + QGeoTiledMapTileContainerNode *tiles; // The majority of the tiles + QGeoTiledMapTileContainerNode *wrapLeft; // When zoomed out, the tiles that wrap around on the left. + QGeoTiledMapTileContainerNode *wrapRight; // When zoomed out, the tiles that wrap around on the right + + QHash<QGeoTileSpec, QSGTexture *> textures; + +#ifdef QT_LOCATION_DEBUG + double m_sideLengthPixel; + QMap<double, QList<QGeoTileSpec>> m_droppedTiles; +#endif +}; + +class Q_LOCATION_PRIVATE_EXPORT QGeoTiledMapScenePrivate : public QObjectPrivate +{ + Q_DECLARE_PUBLIC(QGeoTiledMapScene) +public: + QGeoTiledMapScenePrivate(); + ~QGeoTiledMapScenePrivate(); + + void addTile(const QGeoTileSpec &spec, QSharedPointer<QGeoTileTexture> texture); + + void setVisibleTiles(const QSet<QGeoTileSpec> &visibleTiles); + void removeTiles(const QSet<QGeoTileSpec> &oldTiles); + bool buildGeometry(const QGeoTileSpec &spec, QSGImageNode *imageNode, bool &overzooming); + void updateTileBounds(const QSet<QGeoTileSpec> &tiles); + void setupCamera(); + inline bool isTiltedOrRotated() { return (m_cameraData.tilt() > 0.0) || (m_cameraData.bearing() > 0.0); } + +public: + + QSize m_screenSize; // in pixels + int m_tileSize; // the pixel resolution for each tile + QGeoCameraData m_cameraData; + QRectF m_visibleArea; + QSet<QGeoTileSpec> m_visibleTiles; + + QDoubleVector3D m_cameraUp; + QDoubleVector3D m_cameraEye; + QDoubleVector3D m_cameraCenter; + QMatrix4x4 m_projectionMatrix; + + // scales up the tile geometry and the camera altitude, resulting in no visible effect + // other than to control the accuracy of the render by keeping the values in a sensible range + double m_scaleFactor; + + // rounded down, positive zoom is zooming in, corresponding to reduced altitude + int m_intZoomLevel; + + // mercatorToGrid transform + // the number of tiles in each direction for the whole map (earth) at the current zoom level. + // it is 1<<zoomLevel + int m_sideLength; + double m_mapEdgeSize; + + QHash<QGeoTileSpec, QSharedPointer<QGeoTileTexture> > m_textures; + QVector<QGeoTileSpec> m_updatedTextures; + + // tilesToGrid transform + int m_minTileX; // the minimum tile index, i.e. 0 to sideLength which is 1<< zoomLevel + int m_minTileY; + int m_maxTileX; + int m_maxTileY; + int m_tileXWrapsBelow; // the wrap point as a tile index + bool m_linearScaling; + bool m_dropTextures; + +#ifdef QT_LOCATION_DEBUG + double m_sideLengthPixel; + QGeoTiledMapRootNode *m_mapRoot = nullptr; +#endif +}; + +QT_END_NAMESPACE + +#endif // QGEOTILEDMAPSCENE_P_P_H |