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Regard whitespace Rev 800 → Rev 801

/QMK-Groundstation/tags/QMK-Tools v1.2.1/Global/Class_QMapControl/imagemanager.h
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