Added "data sources" help item

Now using a common directory for all data/configs

src/config.h

@@ -8,8 +8,13 @@
 #define FONT_FAMILY    "Arial"
 #define FONT_SIZE      12
 
-#define POI_DIR        "POI"
-#define TILES_DIR      "tiles"
-#define MAP_LIST_FILE  TILES_DIR"/list.txt"
+#if defined(Q_OS_WIN32)
+#define APP_DIR        "GPXSee"
+#else
+#define APP_DIR        ".gpxsee"
+#endif
+#define POI_DIR        APP_DIR"/POI"
+#define TILES_DIR      APP_DIR"/tiles"
+#define MAP_LIST_FILE  APP_DIR"/maps.txt"
 
 #endif /* CONFIG_H */

src/gui.cpp

@@ -125,6 +125,8 @@ void GUI::createActions()
 	connect(_exitAction, SIGNAL(triggered()), this, SLOT(close()));
 
 	// Help & About
+	_dataSourcesAction = new QAction(tr("Data sources"), this);
+	connect(_dataSourcesAction, SIGNAL(triggered()), this, SLOT(dataSources()));
 	_keysAction = new QAction(tr("Keyboard controls"), this);
 	connect(_keysAction, SIGNAL(triggered()), this, SLOT(keys()));
 	_aboutAction = new QAction(QIcon(QPixmap(APP_ICON)),
@@ -221,6 +223,7 @@ void GUI::createMenus()
 	_settingsMenu->addAction(_showGraphsAction);
 
 	_helpMenu = menuBar()->addMenu(tr("Help"));
+	_helpMenu->addAction(_dataSourcesAction);
 	_helpMenu->addAction(_keysAction);
 	_helpMenu->addSeparator();
 	_helpMenu->addAction(_aboutAction);
@@ -317,6 +320,34 @@ void GUI::keys()
 	msgBox.exec();
 }
 
+void GUI::dataSources()
+{
+	QMessageBox msgBox(this);
+
+	msgBox.setWindowTitle(tr("Data sources"));
+	msgBox.setText(QString("<h3>") + tr("Data sources") + QString("</h3>"));
+	msgBox.setInformativeText(
+	  QString("<h4>") + tr("Map sources") + QString("</h4><p>")
+	  + tr("Map (tiles) source URLs are read on program startup from the "
+		"following file:")
+		+ QString("</p><p><code>") + QDir::homePath()
+		  + QString("/"MAP_LIST_FILE"</code></p><p>")
+		+ tr("The file format is one URL per line where the tile X and Y "
+		  "coordinates are replaced with $x and $y. The zoom level is "
+		  "replaced with $z. An example map file could look like:")
+		+ QString("</p><p><code>http://tile.server.com/map/$z/$x/$y.png<br/>"
+		  "http://mapserver.org/map/$z-$x-$y</code></p>")
+
+	  + QString("<h4>") + tr("POIs") + QString("</h4><p>")
+	  + tr("To make GPXSee load a POI file automatically on startup, add "
+		"the file to the following directory:")
+		+ QString("</p><p><code>") + QDir::homePath()
+		+ QString("/"POI_DIR"</code></p>")
+	);
+
+	msgBox.exec();
+}
+
 void GUI::openFile()
 {
 	QStringList files = QFileDialog::getOpenFileNames(this, tr("Open file"));

src/gui.h

@@ -30,6 +30,7 @@ public:
 private slots:
 	void about();
 	void keys();
+	void dataSources();
 	void saveFile();
 	void saveAs();
 	void openFile();
@@ -74,6 +75,7 @@ private:
 
 	QAction *_exitAction;
 	QAction *_keysAction;
+	QAction *_dataSourcesAction;
 	QAction *_aboutAction;
 	QAction *_aboutQtAction;
 	QAction *_saveFileAction;