| 0,0 → 1,125 |
|---|
| /* |
| * |
| * This file is part of QMapControl, |
| * an open-source cross-platform map widget |
| * |
| * Copyright (C) 2007 - 2008 Kai Winter |
| * |
| * This program is free software: you can redistribute it and/or modify |
| * it under the terms of the GNU Lesser General Public License as published by |
| * the Free Software Foundation, either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with QMapControl. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * Contact e-mail: kaiwinter@gmx.de |
| * Program URL : http://qmapcontrol.sourceforge.net/ |
| * |
| */ |
| |
| #ifndef IMAGEMANAGER_H |
| #define IMAGEMANAGER_H |
| |
| #include <QObject> |
| #include <QPixmapCache> |
| #include <QDebug> |
| #include <QMutex> |
| #include <QFile> |
| #include <QBuffer> |
| #include <QDir> |
| #include "mapnetwork.h" |
| |
| namespace qmapcontrol |
| { |
| class MapNetwork; |
| /** |
| @author Kai Winter <kaiwinter@gmx.de> |
| */ |
| class ImageManager : public QObject |
| { |
| Q_OBJECT; |
| |
| public: |
| static ImageManager* instance() |
| { |
| if(!m_Instance) |
| { |
| m_Instance = new ImageManager; |
| } |
| return m_Instance; |
| } |
| |
| ~ImageManager(); |
| |
| //! returns a QPixmap of the asked image |
| /*! |
| * If this component doesn´t have the image a network query gets started to load it. |
| * @param host the host of the image |
| * @param path the path to the image |
| * @return the pixmap of the asked image |
| */ |
| QPixmap getImage(const QString& host, const QString& path); |
| |
| QPixmap prefetchImage(const QString& host, const QString& path); |
| |
| void receivedImage(const QPixmap pixmap, const QString& url); |
| |
| /*! |
| * This method is called by MapNetwork, after all images in its queue were loaded. |
| * The ImageManager emits a signal, which is used in MapControl to remove the zoom image. |
| * The zoom image should be removed on Tile Images with transparency. |
| * Else the zoom image stay visible behind the newly loaded tiles. |
| */ |
| void loadingQueueEmpty(); |
| |
| /*! |
| * Aborts all current loading threads. |
| * This is useful when changing the zoom-factor, though newly needed images loads faster |
| */ |
| void abortLoading(); |
| |
| //! sets the proxy for HTTP connections |
| /*! |
| * This method sets the proxy for HTTP connections. |
| * This is not provided by the current Qtopia version! |
| * @param host the proxy´s hostname or ip |
| * @param port the proxy´s port |
| */ |
| void setProxy(QString host, int port); |
| |
| //! sets the cache directory for persistently saving map tiles |
| /*! |
| * |
| * @param path the path where map tiles should be stored |
| * @todo add maximum size |
| */ |
| void setCacheDir(const QDir& path); |
| |
| private: |
| ImageManager(QObject* parent = 0); |
| ImageManager(const ImageManager&); |
| ImageManager& operator=(const ImageManager&); |
| QPixmap emptyPixmap; |
| MapNetwork* net; |
| QVector<QString> prefetch; |
| QDir cacheDir; |
| bool doPersistentCaching; |
| |
| static ImageManager* m_Instance; |
| |
| bool saveTile(QString tileName,QPixmap tileData); |
| bool loadTile(QString tileName,QPixmap &tileData); |
| bool tileExist(QString tileName); |
| |
| signals: |
| void imageReceived(); |
| void loadingFinished(); |
| }; |
| } |
| #endif |