Added support for user defined TYP files for Garmin IMG maps

src/GUI/gui.cpp

@@ -724,6 +724,8 @@ void GUI::paths()
 	  + QDir::cleanPath(ProgramPaths::csvDir(true)) + "</code></td></tr><tr><td>"
 	  + tr("DEM directory:") + "</td><td><code>"
 	  + QDir::cleanPath(ProgramPaths::demDir(true)) + "</code></td></tr><tr><td>"
+	  + tr("Styles directory:") + "</td><td><code>"
+	  + QDir::cleanPath(ProgramPaths::styleDir(true)) + "</code></td></tr><tr><td>"
 	  + tr("Tile cache directory:") + "</td><td><code>"
 	  + QDir::cleanPath(ProgramPaths::tilesDir()) + "</code></td></tr></table>"
 	);

src/common/programpaths.cpp

@@ -9,9 +9,11 @@
 #define DEM_DIR          "DEM"
 #define TILES_DIR        "tiles"
 #define TRANSLATIONS_DIR "translations"
+#define STYLE_DIR        "style"
 #define ELLIPSOID_FILE   "ellipsoids.csv"
 #define GCS_FILE         "gcs.csv"
 #define PCS_FILE         "pcs.csv"
+#define TYP_FILE         "style.typ"
 
 
 #if QT_VERSION < QT_VERSION_CHECK(5, 4, 0)
@@ -79,6 +81,11 @@ QString ProgramPaths::demDir(bool writable)
 	return dir(DEM_DIR, writable);
 }
 
+QString ProgramPaths::styleDir(bool writable)
+{
+	return dir(STYLE_DIR, writable);
+}
+
 QString ProgramPaths::tilesDir()
 {
 #if defined(Q_OS_WIN32)
@@ -113,6 +120,11 @@ QString ProgramPaths::pcsFile()
 	return file(dir(CSV_DIR), PCS_FILE);
 }
 
+QString ProgramPaths::typFile()
+{
+	return file(dir(STYLE_DIR), TYP_FILE);
+}
+
 #else // QT_VERSION < 5
 
 #include <QStandardPaths>
@@ -157,6 +169,16 @@ QString ProgramPaths::demDir(bool writable)
 		  DEM_DIR, QStandardPaths::LocateDirectory);
 }
 
+QString ProgramPaths::styleDir(bool writable)
+{
+	if (writable)
+		return QDir(QStandardPaths::writableLocation(
+		  QStandardPaths::AppDataLocation)).filePath(STYLE_DIR);
+	else
+		return QStandardPaths::locate(QStandardPaths::AppDataLocation,
+		  STYLE_DIR, QStandardPaths::LocateDirectory);
+}
+
 QString ProgramPaths::tilesDir()
 {
 	return QDir(QStandardPaths::writableLocation(
@@ -187,4 +209,10 @@ QString ProgramPaths::pcsFile()
 	  CSV_DIR "/" PCS_FILE, QStandardPaths::LocateFile);
 }
 
+QString ProgramPaths::typFile()
+{
+	return QStandardPaths::locate(QStandardPaths::AppDataLocation,
+	  STYLE_DIR "/" TYP_FILE, QStandardPaths::LocateFile);
+}
+
 #endif // QT_VERSION < 5

src/common/programpaths.h

@@ -9,11 +9,13 @@ namespace ProgramPaths
 	QString poiDir(bool writable = false);
 	QString csvDir(bool writable = false);
 	QString demDir(bool writable = false);
+	QString styleDir(bool writable = false);
 	QString tilesDir();
 	QString translationsDir();
 	QString ellipsoidsFile();
 	QString gcsFile();
 	QString pcsFile();
+	QString typFile();
 }
 
 #endif // PROGRAMPATHS_H

src/map/IMG/img.cpp

@@ -1,5 +1,6 @@
 #include <QSet>
 #include <QtEndian>
+#include "common/programpaths.h"
 #include "vectortile.h"
 #include "img.h"
 
@@ -162,9 +163,18 @@ IMG::IMG(const QString &fileName) : _file(fileName), _valid(false)
 
 	// Read TYP file if any
 	if (!TYPMap.isEmpty()) {
+		if (TYPMap.size() > 1)
+			qWarning("%s: Multiple TYP files, using %s",
+			  qPrintable(_file.fileName()), qPrintable(TYPMap.keys().first()));
 		SubFile *typ = TYPMap.values().first();
 		_style = Style(typ);
 		qDeleteAll(TYPMap);
+	} else {
+		QFile typFile(ProgramPaths::typFile());
+		if (typFile.exists()) {
+			SubFile typ(&typFile);
+			_style = Style(&typ);
+		}
 	}
 
 	_valid = true;

src/map/IMG/img.h

@@ -50,20 +50,19 @@ public:
 	const QString &name() const {return _name;}
 	const RectC &bounds() const {return _bounds;}
 	Range zooms() const {return Range(_bits.first(), _bits.last());}
+	void objects(const RectC &rect, int bits, QList<Poly> *polygons,
+	  QList<Poly> *lines, QList<Point> *points) const;
+	const Style &style() const {return _style;}
 
 	bool isValid() const {return _valid;}
 	const QString &errorString() const {return _errorString;}
 
-	void objects(const RectC &rect, int bits, QList<Poly> *polygons,
-	  QList<Poly> *lines, QList<Point> *points) const;
-
-	const Style &style() const {return _style;}
-
 private:
 	friend class SubFile;
 
 	typedef RTree<VectorTile*, double, 2> TileTree;
 
+	QString fileName() const {return _file.fileName();}
 	int blockSize() const {return _blockSize;}
 	bool readBlock(int blockNum, QByteArray &data);
 	qint64 read(char *data, qint64 maxSize);

src/map/IMG/style.cpp

@@ -779,7 +779,7 @@ bool Style::parseTYPFile(SubFile *file)
 	  && parsePolygons(file, hdl, polygons)
 	  && parseDrawOrder(file, hdl, order))) {
 		qWarning("%s: Invalid TYP file, using default style",
-		  qPrintable(file->imgName()));
+		  qPrintable(file->fileName()));
 		return false;
 	}
 
@@ -791,7 +791,7 @@ Style::Style(SubFile *typ)
 	defaultLineStyle();
 	defaultPolygonStyle();
 
-	if (typ)
+	if (typ && typ->isValid())
 		parseTYPFile(typ);
 }
 

src/map/IMG/subfile.cpp

@@ -1,3 +1,4 @@
+#include <QFile>
 #include "img.h"
 #include "subfile.h"
 
@@ -19,42 +20,68 @@ SubFile::Type SubFile::type(const char str[3])
 		return Unknown;
 }
 
+SubFile::SubFile(QFile *file) : _img(0), _file(file), _size(0)
+{
+	if (!_file->open(QIODevice::ReadOnly))
+		qWarning("Error opening %s: %s", qPrintable(_file->fileName()),
+		  qPrintable(_file->errorString()));
+}
+
 bool SubFile::isValid() const
 {
-	return ((quint32)_img->blockSize() * (quint32)_blocks.size() - _size
-	  < (quint32)_img->blockSize());
+	return _file
+	  ? _file->isOpen()
+	  : ((quint32)_img->blockSize() * (quint32)_blocks.size() - _size
+		  < (quint32)_img->blockSize());
 }
 
 bool SubFile::seek(Handle &handle, quint32 pos) const
 {
-	quint32 blockSize = _img->blockSize();
-	int blockNum = pos / blockSize;
+	Q_ASSERT(_img || _file);
 
-	if (handle.blockNum != blockNum) {
-		if (blockNum >= _blocks.size())
-			return false;
-		if (!_img->readBlock(_blocks.at(blockNum), handle.data))
-			return false;
-		handle.blockNum = blockNum;
+	if (_file)
+		return _file->seek(pos);
+	else {
+		quint32 blockSize = _img->blockSize();
+		int blockNum = pos / blockSize;
+
+		if (handle.blockNum != blockNum) {
+			if (blockNum >= _blocks.size())
+				return false;
+			if (!_img->readBlock(_blocks.at(blockNum), handle.data))
+				return false;
+			handle.blockNum = blockNum;
+		}
+
+		handle.blockPos = pos % blockSize;
+		handle.pos = pos;
+
+		return true;
 	}
-
-	handle.blockPos = pos % blockSize;
-	handle.pos = pos;
-
-	return true;
 }
 
 bool SubFile::readByte(Handle &handle, quint8 &val) const
 {
-	val = handle.data.at(handle.blockPos++);
-	handle.pos++;
-	return (handle.blockPos >= _img->blockSize())
-	  ? seek(handle, handle.pos) : true;
+	Q_ASSERT(_img || _file);
+
+	if (_file)
+		return _file->getChar((char*)&val);
+	else {
+		val = handle.data.at(handle.blockPos++);
+		handle.pos++;
+		return (handle.blockPos >= _img->blockSize())
+		  ? seek(handle, handle.pos) : true;
+	}
 }
 
-const QString &SubFile::imgName() const
+quint32 SubFile::size() const
 {
-	return _img->name();
+	return _img ? _size : (quint32)_file->size();
+}
+
+QString SubFile::fileName() const
+{
+	return _img ? _img->fileName() : _file->fileName();
 }
 
 #ifndef QT_NO_DEBUG

src/map/IMG/subfile.h

@@ -5,6 +5,7 @@
 #include <QDebug>
 
 class IMG;
+class QFile;
 
 class SubFile
 {
@@ -21,12 +22,13 @@ public:
 		int pos;
 	};
 
-	SubFile(IMG *img, quint32 size) : _img(img), _size(size) {}
+	SubFile(IMG *img, quint32 size) : _img(img), _file(0), _size(size) {}
+	SubFile(QFile *file);
 
 	void addBlock(quint16 block) {_blocks.append(block);}
 	bool isValid() const;
 
-	quint32 size() const {return _size;}
+	quint32 size() const;
 	bool seek(Handle &handle, quint32 pos) const;
 	bool readByte(Handle &handle, quint8 &val) const;
 
@@ -79,7 +81,7 @@ public:
 	}
 
 	quint16 offset() const {return _blocks.first();}
-	const QString &imgName() const;
+	QString fileName() const;
 
 	static Type type(const char str[3]);
 
@@ -87,6 +89,7 @@ public:
 
 private:
 	IMG *_img;
+	QFile *_file;
 	quint32 _size;
 	QVector<quint16> _blocks;
 };