Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 305 | KeyOz | 1 | /* |
| 2 | * |
||
| 3 | * This file is part of QMapControl, |
||
| 4 | * an open-source cross-platform map widget |
||
| 5 | * |
||
| 6 | * Copyright (C) 2007 - 2008 Kai Winter |
||
| 7 | * |
||
| 8 | * This program is free software: you can redistribute it and/or modify |
||
| 9 | * it under the terms of the GNU Lesser General Public License as published by |
||
| 10 | * the Free Software Foundation, either version 3 of the License, or |
||
| 11 | * (at your option) any later version. |
||
| 12 | * |
||
| 13 | * This program is distributed in the hope that it will be useful, |
||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
| 16 | * GNU Lesser General Public License for more details. |
||
| 17 | * |
||
| 18 | * You should have received a copy of the GNU Lesser General Public License |
||
| 19 | * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
||
| 20 | * |
||
| 21 | * Contact e-mail: kaiwinter@gmx.de |
||
| 22 | * Program URL : http://qmapcontrol.sourceforge.net/ |
||
| 23 | * |
||
| 24 | */ |
||
| 25 | |||
| 26 | #ifndef IMAGEMANAGER_H |
||
| 27 | #define IMAGEMANAGER_H |
||
| 28 | |||
| 29 | #include <QObject> |
||
| 30 | #include <QPixmapCache> |
||
| 31 | #include <QDebug> |
||
| 32 | #include <QMutex> |
||
| 33 | #include <QFile> |
||
| 34 | #include <QBuffer> |
||
| 35 | #include <QDir> |
||
| 36 | #include "mapnetwork.h" |
||
| 37 | |||
| 38 | namespace qmapcontrol |
||
| 39 | { |
||
| 40 | class MapNetwork; |
||
| 41 | /** |
||
| 42 | @author Kai Winter <kaiwinter@gmx.de> |
||
| 43 | */ |
||
| 44 | class ImageManager : public QObject |
||
| 45 | { |
||
| 46 | Q_OBJECT; |
||
| 47 | |||
| 48 | public: |
||
| 49 | static ImageManager* instance() |
||
| 50 | { |
||
| 51 | if(!m_Instance) |
||
| 52 | { |
||
| 53 | m_Instance = new ImageManager; |
||
| 54 | } |
||
| 55 | return m_Instance; |
||
| 56 | } |
||
| 57 | |||
| 58 | ~ImageManager(); |
||
| 59 | |||
| 60 | //! returns a QPixmap of the asked image |
||
| 61 | /*! |
||
| 62 | * If this component doesn´t have the image a network query gets started to load it. |
||
| 63 | * @param host the host of the image |
||
| 64 | * @param path the path to the image |
||
| 65 | * @return the pixmap of the asked image |
||
| 66 | */ |
||
| 67 | QPixmap getImage(const QString& host, const QString& path); |
||
| 68 | |||
| 69 | QPixmap prefetchImage(const QString& host, const QString& path); |
||
| 70 | |||
| 71 | void receivedImage(const QPixmap pixmap, const QString& url); |
||
| 72 | |||
| 73 | /*! |
||
| 74 | * This method is called by MapNetwork, after all images in its queue were loaded. |
||
| 75 | * The ImageManager emits a signal, which is used in MapControl to remove the zoom image. |
||
| 76 | * The zoom image should be removed on Tile Images with transparency. |
||
| 77 | * Else the zoom image stay visible behind the newly loaded tiles. |
||
| 78 | */ |
||
| 79 | void loadingQueueEmpty(); |
||
| 80 | |||
| 81 | /*! |
||
| 82 | * Aborts all current loading threads. |
||
| 83 | * This is useful when changing the zoom-factor, though newly needed images loads faster |
||
| 84 | */ |
||
| 85 | void abortLoading(); |
||
| 86 | |||
| 87 | //! sets the proxy for HTTP connections |
||
| 88 | /*! |
||
| 89 | * This method sets the proxy for HTTP connections. |
||
| 90 | * This is not provided by the current Qtopia version! |
||
| 91 | * @param host the proxy´s hostname or ip |
||
| 92 | * @param port the proxy´s port |
||
| 93 | */ |
||
| 94 | void setProxy(QString host, int port); |
||
| 95 | |||
| 96 | //! sets the cache directory for persistently saving map tiles |
||
| 97 | /*! |
||
| 98 | * |
||
| 99 | * @param path the path where map tiles should be stored |
||
| 100 | * @todo add maximum size |
||
| 101 | */ |
||
| 102 | void setCacheDir(const QDir& path); |
||
| 103 | |||
| 104 | private: |
||
| 105 | ImageManager(QObject* parent = 0); |
||
| 106 | ImageManager(const ImageManager&); |
||
| 107 | ImageManager& operator=(const ImageManager&); |
||
| 108 | QPixmap emptyPixmap; |
||
| 109 | MapNetwork* net; |
||
| 110 | QVector<QString> prefetch; |
||
| 111 | QDir cacheDir; |
||
| 112 | bool doPersistentCaching; |
||
| 113 | |||
| 114 | static ImageManager* m_Instance; |
||
| 115 | |||
| 116 | bool saveTile(QString tileName,QPixmap tileData); |
||
| 117 | bool loadTile(QString tileName,QPixmap &tileData); |
||
| 118 | bool tileExist(QString tileName); |
||
| 119 | |||
| 120 | signals: |
||
| 121 | void imageReceived(); |
||
| 122 | void loadingFinished(); |
||
| 123 | }; |
||
| 124 | } |
||
| 125 | #endif |