/usr/include/qgis/qgscrscache.h is in libqgis-dev 2.0.1-2build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 | /***************************************************************************
qgscrscache.h
--------------
begin : September 6th, 2011
copyright : (C) 2011 by Marco Hugentobler
email : marco dot hugentobler at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSCRSCACHE_H
#define QGSCRSCACHE_H
#include "qgscoordinatereferencesystem.h"
#include <QHash>
class QgsCoordinateTransform;
/**Cache coordinate transform by authid of source/dest transformation to avoid the
overhead of initialisation for each redraw*/
class CORE_EXPORT QgsCoordinateTransformCache
{
public:
static QgsCoordinateTransformCache* instance();
~QgsCoordinateTransformCache();
/**Returns coordinate transformation. Cache keeps ownership
@param srcAuthId auth id string of source crs
@param destAuthId auth id string of dest crs*/
const QgsCoordinateTransform* transform( const QString& srcAuthId, const QString& destAuthId );
/**Removes transformations where a changed crs is involved from the cache*/
void invalidateCrs( const QString& crsAuthId );
private:
static QgsCoordinateTransformCache* mInstance;
QHash< QPair< QString, QString >, QgsCoordinateTransform* > mTransforms;
};
class CORE_EXPORT QgsCRSCache
{
public:
static QgsCRSCache* instance();
~QgsCRSCache();
/**Returns the CRS for authid, e.g. 'EPSG:4326' (or an invalid CRS in case of error)*/
const QgsCoordinateReferenceSystem& crsByAuthId( const QString& authid );
const QgsCoordinateReferenceSystem& crsByEpsgId( long epsg );
void updateCRSCache( const QString &authid );
protected:
QgsCRSCache();
private:
static QgsCRSCache* mInstance;
QHash< QString, QgsCoordinateReferenceSystem > mCRS;
/**CRS that is not initialised (returned in case of error)*/
QgsCoordinateReferenceSystem mInvalidCRS;
};
#endif // QGSCRSCACHE_H
|