QGIS/src/core/qgsapplication.cpp

/***************************************************************************
    qgsapplication.cpp - Accessors for application-wide data
     --------------------------------------
    Date                 : 02-Jan-2006
    Copyright            : (C) 2006 by Tom Elwertowski
    Email                : telwertowski at users dot sourceforge dot net
 ***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
/* $Id$ */

#include "qgsapplication.h"
#include "qgsmaplayerregistry.h"
#include "qgsproviderregistry.h"

#include <QDir>

#include <qgsconfig.h>

// for htonl
#ifdef WIN32
#include <winsock.h>
#else
#include <netinet/in.h>
#endif

QString QgsApplication::mPrefixPath;
QString QgsApplication::mPluginPath;
QString QgsApplication::mPkgDataPath;
QString QgsApplication::mThemePath;

/*!
  \class QgsApplication
  \brief The QgsApplication class manages application-wide information.

  This is a subclass of QApplication and should be instantiated in place of
  QApplication. Most methods are static in keeping witn the design of QApplication.

  This class hides platform-specific path information and provides
  a portable way of referencing specific files and directories.
  Ideally, hard-coded paths should appear only here and not in other modules
  so that platform-conditional code is minimized and paths are easier
  to change due to centralization.
*/
QgsApplication::QgsApplication(int & argc, char ** argv, bool GUIenabled)
: QApplication(argc, argv, GUIenabled)
{
#if defined(Q_WS_MACX) || defined(Q_WS_WIN32)
  setPrefixPath(applicationDirPath(), TRUE);
#else
  setPrefixPath(PREFIX, TRUE);
#endif
}

QgsApplication::~QgsApplication()
{}

void QgsApplication::setPrefixPath(const QString& thePrefixPath, bool useDefaultPaths)
{
  mPrefixPath = thePrefixPath;
  if (useDefaultPaths)
  {
#if defined(Q_WS_WIN32)
	setPluginPath(mPrefixPath + QString("/plugins"));
	setPkgDataPath(mPrefixPath);
#else
    setPluginPath(mPrefixPath + QString("/lib/qgis"));
    setPkgDataPath(mPrefixPath + QString("/share/qgis"));
#endif
  }
}

void QgsApplication::setPluginPath(const QString& thePluginPath)
{
  mPluginPath = thePluginPath;
}

void QgsApplication::setPkgDataPath(const QString& thePkgDataPath)
{
  mPkgDataPath = thePkgDataPath;
  mThemePath = mPkgDataPath + QString("/themes/default/");
}


/*!
  Set the theme path to the specified theme.
*/
void QgsApplication::selectTheme(const QString& theThemeName)
{
  mThemePath = mPkgDataPath + QString("/themes/") + theThemeName + QString("/");
}

/*!
  Returns the path to the authors file.
*/
const QString QgsApplication::authorsFilePath()
{
  return mPkgDataPath + QString("/doc/AUTHORS");
}
/*!
  Returns the path to the sponsors file.
*/
const QString QgsApplication::sponsorsFilePath()
{
  return mPkgDataPath + QString("/doc/SPONSORS");
}
/*!
  Returns the path to the developer image directory.
*/
const QString QgsApplication::developerPath()
{
  return mPkgDataPath + QString("/images/developers/");
}

/*!
  Returns the path to the help application.
*/
const QString QgsApplication::helpAppPath()
{
  QString helpAppPath = applicationDirPath(); 
#ifdef Q_OS_MACX
  helpAppPath += "/bin/qgis_help.app/Contents/MacOS";
#endif
  helpAppPath += "/qgis_help";
  return helpAppPath;
}
/*!
  Returns the path to the mapserverexport application.
*/
const QString QgsApplication::msexportAppPath()
{
  QString msexportAppPath = applicationDirPath(); 
#ifdef Q_OS_MACX
  msexportAppPath += "/bin/msexport.app/Contents/MacOS";
#endif
  msexportAppPath += "/msexport";
  return msexportAppPath;
}

/*!
  Returns the path to the translation directory.
*/
const QString QgsApplication::i18nPath()
{
  return mPkgDataPath + QString("/i18n/");
}

/*!
  Returns the path to the master qgis.db file.
*/
const QString QgsApplication::qgisMasterDbFilePath()
{
  return mPkgDataPath + QString("/resources/qgis.db");
}

/*!
  Returns the path to the settings directory in user's home dir
 */
const QString QgsApplication::qgisSettingsDirPath()
{
  return QDir::homeDirPath() + QString("/.qgis/");
}

/*!
  Returns the path to the user qgis.db file.
*/
const QString QgsApplication::qgisUserDbFilePath()
{
  return qgisSettingsDirPath() + QString("qgis.db");
}

/*!
  Returns the path to the splash screen image directory.
*/
const QString QgsApplication::splashPath()
{
  return mPkgDataPath + QString("/images/splash/");
}

/*!
  Returns the path to the icons image directory.
*/
const QString QgsApplication::iconsPath()
{
  return mPkgDataPath + QString("/images/icons/");
}
/*!
  Returns the path to the srs.db file.
*/
const QString QgsApplication::srsDbFilePath()
{
  return mPkgDataPath + QString("/resources/srs.db");
}

/*!
  Returns the path to the svg directory.
*/
const QString QgsApplication::svgPath()
{
  return mPkgDataPath + QString("/svg/");
}

QgsApplication::endian_t QgsApplication::endian()
{
  return (htonl(1) == 1) ? XDR : NDR ;
}

void QgsApplication::initQgis()
{
  // set the provider plugin path (this creates provider registry)
  QgsProviderRegistry::instance(pluginPath());
  
  // create map layer registry if doesn't exist
  QgsMapLayerRegistry::instance();
}

void QgsApplication::exitQgis()
{
  delete QgsMapLayerRegistry::instance();
  delete QgsProviderRegistry::instance();
}

QString QgsApplication::reportStyleSheet()
{
  QString myStyle = ".glossy,h1,h2,h3{ background-color: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #616161, stop: 0.5 #505050, stop: 0.6 #434343, stop:1 #656565); color: white; padding-left: 4px; border: 1px solid #6c6c6c; }";
  myStyle += "h1 {font-size : 22pt;}";
  myStyle += "h2 {font-size : 18pt;}";
  myStyle += "h3 {font-size : 14pt;}";
  myStyle += ".cellHeader {color:#466aa5; font-size : 12pt;}";
  myStyle += ".largeCell {color:#000000; font-size : 12pt;}";
  myStyle += "table "
  "{"
  "  border-width: 1px 1px 1px 1px;"
  "  border-spacing: 2px;"
  "  border-style: solid solid solid solid;"
  "  border-color: black black black black;"
  "  border-collapse: separate;"
  "  background-color: white;"
  "}";
  return myStyle;
}