Initial WMS support (no multi-layer support for now)

gpxsee.pro

@@ -119,7 +119,10 @@ HEADERS += src/config.h \
     src/map/mapsource.h \
     src/map/tileloader.h \
     src/map/wmtsmap.h \
-    src/map/wmts.h
+    src/map/wmts.h \
+    src/map/wmsmap.h \
+    src/map/wms.h \
+    src/map/crs.h
 SOURCES += src/main.cpp \
     src/common/coordinates.cpp \
     src/common/rectc.cpp \
@@ -208,7 +211,10 @@ SOURCES += src/main.cpp \
     src/map/mapsource.cpp \
     src/map/tileloader.cpp \
     src/map/wmtsmap.cpp \
-    src/map/wmts.cpp
+    src/map/wmts.cpp \
+    src/map/wmsmap.cpp \
+    src/map/wms.cpp \
+    src/map/crs.cpp
 RESOURCES += gpxsee.qrc
 TRANSLATIONS = lang/gpxsee_cs.ts \
     lang/gpxsee_sv.ts \

src/GUI/app.cpp

@@ -5,6 +5,7 @@
 #include <QNetworkProxyFactory>
 #include <QLibraryInfo>
 #include "map/wmts.h"
+#include "map/wms.h"
 #include "map/tileloader.h"
 #include "map/downloader.h"
 #include "map/ellipsoid.h"
@@ -40,6 +41,7 @@ App::App(int &argc, char **argv) : QApplication(argc, argv),
 	Downloader *dl = new Downloader(this);
 	TileLoader::setDownloader(dl);
 	WMTS::setDownloader(dl);
+	WMS::setDownloader(dl);
 	OPENGL_SET_SAMPLES(4);
 	loadDatums();
 	loadPCSs();

src/GUI/mapview.cpp

@@ -179,7 +179,7 @@ QList<PathItem *> MapView::loadData(const Data &data)
 	if (_tracks.empty() && _routes.empty() && _waypoints.empty())
 		return paths;
 
-	if (mapZoom() != zoom)
+	if (fitMapZoom() != zoom)
 		rescale();
 	else
 		updatePOIVisibility();
@@ -189,7 +189,7 @@ QList<PathItem *> MapView::loadData(const Data &data)
 	return paths;
 }
 
-int MapView::mapZoom() const
+int MapView::fitMapZoom() const
 {
 	RectC br = _tr | _rr | _wr;
 
@@ -389,7 +389,10 @@ void MapView::setCoordinatesFormat(CoordinatesFormat format)
 void MapView::clearMapCache()
 {
 	_map->clearCache();
-	resetCachedContent();
+
+	fitMapZoom();
+	rescale();
+	centerOn(contentCenter());
 }
 
 void MapView::digitalZoom(int zoom)
@@ -767,7 +770,7 @@ void MapView::resizeEvent(QResizeEvent *event)
 	QGraphicsView::resizeEvent(event);
 
 	int zoom = _map->zoom();
-	if (mapZoom() != zoom)
+	if (fitMapZoom() != zoom)
 		rescale();
 
 	centerOn(contentCenter());

src/GUI/mapview.h

@@ -80,7 +80,7 @@ private:
 	void loadPOI();
 	void clearPOI();
 
-	int mapZoom() const;
+	int fitMapZoom() const;
 	QPointF contentCenter() const;
 	void rescale();
 	void centerOn(const QPointF &pos);

src/common/range.h

@@ -16,6 +16,9 @@ public:
 
 	bool isValid() const {return size() >= 0;}
 
+	void setMin(int min) {_min = min;}
+	void setMax(int max) {_max = max;}
+
 private:
 	int _min, _max;
 };
@@ -32,6 +35,9 @@ public:
 
 	bool isValid() const {return size() >= 0;}
 
+	void setMin(qreal min) {_min = min;}
+	void setMax(qreal max) {_max = max;}
+
 	void resize(qreal size);
 
 private:

src/map/crs.cpp

@@ -0,0 +1,46 @@
+#include <QStringList>
+#include "pcs.h"
+#include "crs.h"
+
+Projection CRS::projection(const QString &crs)
+{
+	QStringList list(crs.split(':'));
+	QString authority, code;
+	bool res;
+	int epsg;
+	const PCS *pcs;
+	const GCS *gcs;
+
+	switch (list.size()) {
+		case 2:
+			authority = list.at(0);
+			code = list.at(1);
+			break;
+		case 7:
+			authority = list.at(4);
+			code = list.at(6);
+			break;
+		default:
+			return Projection();
+	}
+
+	if (authority == "EPSG") {
+		epsg = code.toInt(&res);
+		if (!res)
+			return Projection();
+
+		if ((pcs = PCS::pcs(epsg)))
+			return Projection(pcs->gcs(), pcs->method(), pcs->setup(),
+			  pcs->units());
+		else if ((gcs = GCS::gcs(epsg)))
+			return Projection(gcs);
+		else
+			return Projection();
+	} else if (authority == "OGC") {
+		if (code == "CRS84")
+			return Projection(GCS::gcs(4326));
+		else
+			return Projection();
+	} else
+		return Projection();
+}

src/map/crs.h

@@ -0,0 +1,11 @@
+#ifndef CRS_H
+#define CRS_H
+
+#include "projection.h"
+
+namespace CRS
+{
+	Projection projection(const QString &crs);
+}
+
+#endif // CRS_H

src/map/mapsource.cpp

@@ -2,6 +2,7 @@
 #include <QXmlStreamReader>
 #include "onlinemap.h"
 #include "wmtsmap.h"
+#include "wmsmap.h"
 #include "mapsource.h"
 
 #define ZOOM_MAX       19
@@ -11,9 +12,10 @@
 #define BOUNDS_RIGHT   180
 #define BOUNDS_BOTTOM  -85.0511
 
-MapSource::TMSConfig::TMSConfig()
+
-  : zooms(ZOOM_MIN, ZOOM_MAX), bounds(Coordinates(BOUNDS_LEFT, BOUNDS_TOP),
+MapSource::Config::Config() : type(TMS), zooms(ZOOM_MIN, ZOOM_MAX),
-  Coordinates(BOUNDS_RIGHT, BOUNDS_BOTTOM)) {}
+  bounds(Coordinates(BOUNDS_LEFT, BOUNDS_TOP), Coordinates(BOUNDS_RIGHT,
+  BOUNDS_BOTTOM)), format("image/png"), rest(false), yx(false) {}
 
 
 Range MapSource::zooms(QXmlStreamReader &reader)
@@ -23,11 +25,7 @@ Range MapSource::zooms(QXmlStreamReader &reader)
 	bool res;
 
 	if (attr.hasAttribute("min")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		min = attr.value("min").toString().toInt(&res);
-#else // QT_VERSION < 5
-		min = attr.value("min").toInt(&res);
-#endif // QT_VERSION < 5
 		if (!res || (min < ZOOM_MIN || min > ZOOM_MAX)) {
 			reader.raiseError("Invalid minimal zoom level");
 			return Range();
@@ -36,11 +34,7 @@ Range MapSource::zooms(QXmlStreamReader &reader)
 		min = ZOOM_MIN;
 
 	if (attr.hasAttribute("max")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		max = attr.value("max").toString().toInt(&res);
-#else // QT_VERSION < 5
-		max = attr.value("max").toInt(&res);
-#endif // QT_VERSION < 5
 		if (!res || (max < ZOOM_MIN || max > ZOOM_MAX)) {
 			reader.raiseError("Invalid maximal zoom level");
 			return Range();
@@ -63,11 +57,7 @@ RectC MapSource::bounds(QXmlStreamReader &reader)
 	bool res;
 
 	if (attr.hasAttribute("top")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		top = attr.value("top").toString().toDouble(&res);
-#else // QT_VERSION < 5
-		top = attr.value("top").toDouble(&res);
-#endif // QT_VERSION < 5
 		if (!res || (top < BOUNDS_BOTTOM || top > BOUNDS_TOP)) {
 			reader.raiseError("Invalid bounds top value");
 			return RectC();
@@ -76,11 +66,7 @@ RectC MapSource::bounds(QXmlStreamReader &reader)
 		top = BOUNDS_TOP;
 
 	if (attr.hasAttribute("bottom")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		bottom = attr.value("bottom").toString().toDouble(&res);
-#else // QT_VERSION < 5
-		bottom = attr.value("bottom").toDouble(&res);
-#endif // QT_VERSION < 5
 		if (!res || (bottom < BOUNDS_BOTTOM || bottom > BOUNDS_TOP)) {
 			reader.raiseError("Invalid bounds bottom value");
 			return RectC();
@@ -89,11 +75,7 @@ RectC MapSource::bounds(QXmlStreamReader &reader)
 		bottom = BOUNDS_BOTTOM;
 
 	if (attr.hasAttribute("left")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		left = attr.value("left").toString().toDouble(&res);
-#else // QT_VERSION < 5
-		left = attr.value("left").toDouble(&res);
-#endif // QT_VERSION < 5
 		if (!res || (left < BOUNDS_LEFT || left > BOUNDS_RIGHT)) {
 			reader.raiseError("Invalid bounds left value");
 			return RectC();
@@ -102,11 +84,7 @@ RectC MapSource::bounds(QXmlStreamReader &reader)
 		left = BOUNDS_LEFT;
 
 	if (attr.hasAttribute("right")) {
-#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
 		right = attr.value("right").toString().toDouble(&res);
-#else // QT_VERSION < 5
-		right = attr.value("right").toDouble(&res);
-#endif // QT_VERSION < 5
 		if (!res || (right < BOUNDS_LEFT || right > BOUNDS_RIGHT)) {
 			reader.raiseError("Invalid bounds right value");
 			return RectC();
@@ -128,38 +106,44 @@ RectC MapSource::bounds(QXmlStreamReader &reader)
 
 void MapSource::map(QXmlStreamReader &reader, Config &config)
 {
-	config.type = (reader.attributes().value("type") == "WMTS") ? WMTS : TMS;
+	const QXmlStreamAttributes &attr = reader.attributes();
+	config.type = (attr.value("type") == "WMTS") ? WMTS
+	  : (attr.value("type") == "WMS") ? WMS : TMS;
 
 	while (reader.readNextStartElement()) {
 		if (reader.name() == "name")
 			config.name = reader.readElementText();
 		else if (reader.name() == "url") {
-			config.wmts.rest = (reader.attributes().value("type") == "REST")
+			config.rest = (reader.attributes().value("type") == "REST")
 			  ? true : false;
 			config.url = reader.readElementText();
 		} else if (reader.name() == "zoom") {
-			config.tms.zooms = zooms(reader);
+			config.zooms = zooms(reader);
 			reader.skipCurrentElement();
 		} else if (reader.name() == "bounds") {
-			config.tms.bounds = bounds(reader);
+			config.bounds = bounds(reader);
 			reader.skipCurrentElement();
 		} else if (reader.name() == "format") {
-			config.wmts.format = reader.readElementText();
+			config.format = reader.readElementText();
 		} else if (reader.name() == "layer")
-			config.wmts.layer = reader.readElementText();
+			config.layer = reader.readElementText();
 		else if (reader.name() == "style")
-			config.wmts.style = reader.readElementText();
+			config.style = reader.readElementText();
 		else if (reader.name() == "set") {
-			config.wmts.yx = (reader.attributes().value("axis") == "yx")
+			config.yx = (reader.attributes().value("axis") == "yx")
 			  ? true : false;
-			config.wmts.set = reader.readElementText();
+			config.set = reader.readElementText();
 		} else if (reader.name() == "dimension") {
 			QXmlStreamAttributes attr = reader.attributes();
 			if (!attr.hasAttribute("id"))
 				reader.raiseError("Missing dimension id");
 			else
-				config.wmts.dimensions.append(QPair<QString, QString>(
+				config.dimensions.append(QPair<QString, QString>(
 				  attr.value("id").toString(), reader.readElementText()));
+		} else if (reader.name() == "crs") {
+			config.yx = (reader.attributes().value("axis") == "yx")
+			  ? true : false;
+			config.crs = reader.readElementText();
 		} else
 			reader.skipCurrentElement();
 	}
@@ -170,6 +154,8 @@ Map *MapSource::loadFile(const QString &path)
 	QFile file(path);
 	QXmlStreamReader reader;
 	Config config;
+	Map *m;
+
 
 	if (!file.open(QFile::ReadOnly | QFile::Text)) {
 		_errorString = file.errorString();
@@ -197,33 +183,43 @@ Map *MapSource::loadFile(const QString &path)
 		_errorString = "Missing URL definition";
 		return 0;
 	}
-	if (config.type == WMTS) {
+	if (config.type == WMTS || config.type == WMS) {
-		if (config.wmts.layer.isEmpty()) {
+		if (config.layer.isEmpty()) {
 			_errorString = "Missing layer definition";
 			return 0;
 		}
-		if (config.wmts.style.isEmpty()) {
+		if (config.style.isEmpty()) {
 			_errorString = "Missing style definiton";
 			return 0;
 		}
-		if (config.wmts.set.isEmpty()) {
+		if (config.format.isEmpty()) {
-			_errorString = "Missing set definiton";
-			return 0;
-		}
-		if (config.wmts.format.isEmpty()) {
 			_errorString = "Missing format definition";
 			return 0;
 		}
 	}
+	if (config.type == WMTS) {
+		if (config.set.isEmpty()) {
+			_errorString = "Missing set definiton";
+			return 0;
+		}
+	}
+	if (config.type == WMS) {
+		if (config.crs.isEmpty()) {
+			_errorString = "Missing CRS definiton";
+			return 0;
+		}
+	}
 
-	Map *m;
 	if (config.type == WMTS)
-		m = new WMTSMap(config.name, WMTS::Setup(config.url, config.wmts.layer,
+		m = new WMTSMap(config.name, WMTS::Setup(config.url, config.layer,
-		  config.wmts.set, config.wmts.style, config.wmts.format,
+		  config.set, config.style, config.format, config.rest, config.yx,
-		  config.wmts.rest, config.wmts.yx, config.wmts.dimensions));
+		  config.dimensions));
+	else if (config.type == WMS)
+		m = new WMSMap(config.name, WMS::Setup(config.url, config.layer,
+		  config.style, config.format, config.crs, config.yx));
 	else
-		m = new OnlineMap(config.name, config.url, config.tms.zooms,
+		m = new OnlineMap(config.name, config.url, config.zooms, config.bounds);
-		  config.tms.bounds);
+
 	if (!m->isValid()) {
 		_errorString = m->errorString();
 		delete m;

src/map/mapsource.h

@@ -17,36 +17,26 @@ public:
 private:
 	enum Type {
 		TMS,
-		WMTS
+		WMTS,
+		WMS
 	};
 
-	struct TMSConfig {
+	struct Config {
+		Type type;
+		QString name;
+		QString url;
 		Range zooms;
 		RectC bounds;
-
-		TMSConfig();
-	};
-
-	struct WMTSConfig {
 		QString layer;
 		QString style;
 		QString set;
 		QString format;
+		QString crs;
 		bool rest;
 		bool yx;
 		QList<QPair<QString, QString> > dimensions;
 
-		WMTSConfig() : format("image/png"), rest(false), yx(false) {}
+		Config();
-	};
-
-	struct Config {
-		QString name;
-		QString url;
-		Type type;
-		WMTSConfig wmts;
-		TMSConfig tms;
-
-		Config() : type(TMS) {}
 	};
 
 	RectC bounds(QXmlStreamReader &reader);

src/map/tile.h

@@ -8,23 +8,26 @@
 class Tile
 {
 public:
-	Tile(const QPoint &xy, const QVariant &zoom)
+	Tile(const QPoint &xy, const QVariant &zoom, const QRectF &bbox = QRectF())
-		{_xy = xy; _zoom = zoom;}
+		{_xy = xy; _zoom = zoom; _bbox = bbox;}
 
-	QVariant zoom() const {return _zoom;}
+	const QVariant &zoom() const {return _zoom;}
-	const QPoint& xy() const {return _xy;}
+	const QPoint &xy() const {return _xy;}
+	const QRectF &bbox() const {return _bbox;}
 	QPixmap& pixmap() {return _pixmap;}
 
 private:
 	QVariant _zoom;
 	QPoint _xy;
+	QRectF _bbox;
 	QPixmap _pixmap;
 };
 
 #ifndef QT_NO_DEBUG
 inline QDebug operator<<(QDebug dbg, const Tile &tile)
 {
-	dbg.nospace() << "Tile(" << tile.zoom() << ", " << tile.xy() << ")";
+	dbg.nospace() << "Tile(" << tile.zoom() << ", " << tile.xy() << ", "
+	  << tile.bbox() << ")";
 	return dbg.space();
 }
 #endif // QT_NO_DEBUG

src/map/tileloader.cpp

@@ -85,9 +85,18 @@ QString TileLoader::tileUrl(const Tile &tile) const
 {
 	QString url(_url);
 
-	url.replace("$z", tile.zoom().toString());
+	if (!tile.bbox().isNull()) {
-	url.replace("$x", QString::number(tile.xy().x()));
+		QString bbox = QString("%1,%2,%3,%4").arg(
-	url.replace("$y", QString::number(tile.xy().y()));
+		  QString::number(tile.bbox().left(), 'f', 6),
+		  QString::number(tile.bbox().bottom(), 'f', 6),
+		  QString::number(tile.bbox().right(), 'f', 6),
+		  QString::number(tile.bbox().top(), 'f', 6));
+		url.replace("$bbox", bbox);
+	} else {
+		url.replace("$z", tile.zoom().toString());
+		url.replace("$x", QString::number(tile.xy().x()));
+		url.replace("$y", QString::number(tile.xy().y()));
+	}
 
 	return url;
 }

src/map/tileloader.h

@@ -22,7 +22,6 @@ public:
 	  {_downloader = downloader;}
 
 private:
-	void fillTile(Tile &tile);
 	QString tileUrl(const Tile &tile) const;
 	QString tileFile(const Tile &tile) const;
 

src/map/wms.cpp

@@ -0,0 +1,215 @@
+#include <QFileInfo>
+#include <QEventLoop>
+#include <QXmlStreamReader>
+#include "downloader.h"
+#include "crs.h"
+#include "wms.h"
+
+
+Downloader *WMS::_downloader = 0;
+
+void WMS::getMap(QXmlStreamReader &reader, CTX &ctx)
+{
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "Format") {
+			if (reader.readElementText() == ctx.setup.format())
+				ctx.format = true;
+		} else
+			reader.skipCurrentElement();
+	}
+}
+
+void WMS::request(QXmlStreamReader &reader, CTX &ctx)
+{
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "GetMap")
+			getMap(reader, ctx);
+		else
+			reader.skipCurrentElement();
+	}
+}
+
+QString WMS::style(QXmlStreamReader &reader)
+{
+	QString name;
+
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "Name")
+			name = reader.readElementText();
+		else
+			reader.skipCurrentElement();
+	}
+
+	return name;
+}
+
+void WMS::layer(QXmlStreamReader &reader, CTX &ctx,
+  const QList<QString> &pCRSs, const QList<QString> &pStyles)
+{
+	QString name;
+	QList<QString> CRSs(pCRSs);
+	QList<QString> styles(pStyles);
+	RangeF scaleDenominator(2132.729583849784, 559082264.0287178);
+	QRectF boundingBox;
+
+
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "Name")
+			name = reader.readElementText();
+		else if (reader.name() == "CRS")
+			CRSs.append(reader.readElementText());
+		else if (reader.name() == "Style")
+			styles.append(style(reader));
+		else if (reader.name() == "MinScaleDenominator")
+			scaleDenominator.setMin(reader.readElementText().toDouble());
+		else if (reader.name() == "MaxScaleDenominator")
+			scaleDenominator.setMax(reader.readElementText().toDouble());
+		else if (reader.name() == "BoundingBox") {
+			QXmlStreamAttributes attr = reader.attributes();
+			if (attr.value("CRS") == ctx.setup.crs()) {
+				if (ctx.setup.yx())
+					boundingBox = QRectF(QPointF(
+					  attr.value("miny").toString().toDouble(),
+					  attr.value("maxx").toString().toDouble()),
+					  QPointF(attr.value("maxy").toString().toDouble(),
+					  attr.value("minx").toString().toDouble()));
+				else
+					boundingBox = QRectF(QPointF(
+					  attr.value("minx").toString().toDouble(),
+					  attr.value("maxy").toString().toDouble()),
+					  QPointF(attr.value("maxx").toString().toDouble(),
+					  attr.value("miny").toString().toDouble()));
+			}
+			reader.skipCurrentElement();
+		} else if (reader.name() == "Layer")
+			layer(reader, ctx, CRSs, styles);
+		else
+			reader.skipCurrentElement();
+	}
+
+	if (name == ctx.setup.layer()) {
+		ctx.scaleDenominator = scaleDenominator;
+		ctx.boundingBox = boundingBox;
+		ctx.layer = true;
+		ctx.style = styles.contains(ctx.setup.style());
+		ctx.crs = CRSs.contains(ctx.setup.crs());
+	}
+}
+
+void WMS::capability(QXmlStreamReader &reader, CTX &ctx)
+{
+	QList<QString> CRSs;
+	QList<QString> styles;
+
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "Layer")
+			layer(reader, ctx, CRSs, styles);
+		else if (reader.name() == "Request")
+			request(reader, ctx);
+		else
+			reader.skipCurrentElement();
+	}
+}
+
+void WMS::capabilities(QXmlStreamReader &reader, CTX &ctx)
+{
+	while (reader.readNextStartElement()) {
+		if (reader.name() == "Capability")
+			capability(reader, ctx);
+		else
+			reader.skipCurrentElement();
+	}
+}
+
+bool WMS::parseCapabilities(const QString &path, const Setup &setup)
+{
+	QFile file(path);
+	CTX ctx(setup);
+	QXmlStreamReader reader;
+
+	if (!file.open(QFile::ReadOnly | QFile::Text)) {
+		_errorString = file.errorString();
+		return false;
+	}
+
+	reader.setDevice(&file);
+	if (reader.readNextStartElement()) {
+		if (reader.name() == "WMS_Capabilities")
+			capabilities(reader, ctx);
+		else
+			reader.raiseError("Not a WMS_Capabilities XML file");
+	}
+	if (reader.error()) {
+		_errorString = QString("%1:%2: %3").arg(path).arg(reader.lineNumber())
+		  .arg(reader.errorString());
+		return false;
+	}
+
+	if (!ctx.layer) {
+		_errorString = ctx.setup.layer() + ": layer not provided";
+		return false;
+	}
+	if (!ctx.style) {
+		_errorString = ctx.setup.style() + ": style not provided";
+		return false;
+	}
+	if (!ctx.format) {
+		_errorString = ctx.setup.format() + ": format not provided";
+		return false;
+	}
+	if (!ctx.crs) {
+		_errorString = ctx.setup.crs() + ": CRS not provided";
+		return false;
+	}
+	_projection = CRS::projection(ctx.setup.crs());
+	if (_projection.isNull()) {
+		_errorString = ctx.setup.crs() + ": unknown CRS";
+		return false;
+	}
+	if (!ctx.scaleDenominator.isValid()) {
+		_errorString = "Invalid scale denominator range";
+		return false;
+	}
+	if (ctx.boundingBox.isNull()) {
+		_errorString = "Missing bounding box";
+		return false;
+	}
+
+	_boundingBox = ctx.boundingBox;
+	_scaleDenominator = ctx.scaleDenominator;
+
+	return true;
+}
+
+bool WMS::getCapabilities(const QString &url, const QString &file)
+{
+	QList<Download> dl;
+
+	dl.append(Download(url, file));
+
+	QEventLoop wait;
+	QObject::connect(_downloader, SIGNAL(finished()), &wait, SLOT(quit()));
+	if (_downloader->get(dl))
+		wait.exec();
+
+	if (QFileInfo(file).exists())
+		return true;
+	else {
+		_errorString = "Error downloading capabilities XML file";
+		return false;
+	}
+}
+
+WMS::WMS(const QString &file, const WMS::Setup &setup) : _valid(false)
+{
+	QString capaUrl = QString("%1?service=WMS&request=GetCapabilities")
+	  .arg(setup.url());
+
+	if (!QFileInfo(file).exists())
+		if (!getCapabilities(capaUrl, file))
+			return;
+	if (!parseCapabilities(file, setup))
+		return;
+
+	_valid = true;
+}

src/map/wms.h

@@ -0,0 +1,86 @@
+#ifndef WMS_H
+#define WMS_H
+
+#include <QString>
+#include <QRectF>
+#include "common/range.h"
+#include "projection.h"
+
+class QXmlStreamReader;
+class Downloader;
+
+class WMS
+{
+public:
+	class Setup
+	{
+	public:
+		Setup(const QString &url, const QString &layer, const QString &style,
+		  const QString &format, const QString &crs, bool yx)
+		  : _url(url), _layer(layer), _style(style), _format(format), _crs(crs),
+		  _yx(yx) {}
+
+		const QString &url() const {return _url;}
+		const QString &layer() const {return _layer;}
+		const QString &style() const {return _style;}
+		const QString &format() const {return _format;}
+		const QString &crs() const {return _crs;}
+		bool yx() const {return _yx;}
+
+	private:
+		QString _url;
+		QString _layer;
+		QString _style;
+		QString _format;
+		QString _crs;
+		bool _yx;
+	};
+
+
+	WMS(const QString &path, const Setup &setup);
+
+	const Projection &projection() const {return _projection;}
+	const RangeF &scaleDenominator() const {return _scaleDenominator;}
+	const QRectF &boundingBox() const {return _boundingBox;}
+
+	bool isValid() const {return _valid;}
+	const QString &errorString() const {return _errorString;}
+
+	static void setDownloader(Downloader *downloader)
+	  {_downloader = downloader;}
+
+private:
+	struct CTX {
+		const Setup &setup;
+		RangeF scaleDenominator;
+		QRectF boundingBox;
+		bool layer;
+		bool style;
+		bool format;
+		bool crs;
+
+		CTX(const Setup &setup) : setup(setup), layer(false), style(false),
+		  format(false), crs(false) {}
+	};
+
+	QString style(QXmlStreamReader &reader);
+	void getMap(QXmlStreamReader &reader, CTX &ctx);
+	void request(QXmlStreamReader &reader, CTX &ctx);
+	void layer(QXmlStreamReader &reader, CTX &ctx, const QList<QString> &pCRSs,
+	  const QList<QString> &pStyles);
+	void capability(QXmlStreamReader &reader, CTX &ctx);
+	void capabilities(QXmlStreamReader &reader, CTX &ctx);
+	bool parseCapabilities(const QString &path, const Setup &setup);
+	bool getCapabilities(const QString &url, const QString &file);
+
+	Projection _projection;
+	RangeF _scaleDenominator;
+	QRectF _boundingBox;
+
+	bool _valid;
+	QString _errorString;
+
+	static Downloader *_downloader;
+};
+
+#endif // WMS_H

src/map/wmsmap.cpp

@@ -0,0 +1,230 @@
+#include <QDir>
+#include <QPainter>
+#include "common/wgs84.h"
+#include "common/rectc.h"
+#include "config.h"
+#include "downloader.h"
+#include "wmsmap.h"
+
+
+#define CAPABILITIES_FILE "capabilities.xml"
+#define TILE_SIZE 256
+
+qreal WMSMap::sd2res(qreal scaleDenominator) const
+{
+	return scaleDenominator * 0.28e-3 * _projection.units().fromMeters(1.0);
+}
+
+QString WMSMap::tileUrl() const
+{
+	return QString("%1?version=1.3.0&request=GetMap&CRS=%2&bbox=$bbox"
+	  "&width=%3&height=%4&layers=%5&styles=%6&format=%7&transparent=true")
+	  .arg(_setup.url(), _setup.crs(), QString::number(TILE_SIZE),
+	  QString::number(TILE_SIZE), _setup.layer(), _setup.style(),
+	  _setup.format());
+}
+
+QString WMSMap::tilesDir() const
+{
+	return QString(TILES_DIR + "/" + _name);
+}
+
+void WMSMap::computeZooms(const RangeF &scaleDenominator)
+{
+	_zooms.clear();
+
+	if (scaleDenominator.size() > 0) {
+		qreal ld = log2(scaleDenominator.max()) - log2(scaleDenominator.min());
+		int cld = ceil(ld);
+		qreal step = ld / (qreal)cld;
+		qreal lmax = log2(scaleDenominator.max());
+		for (int i = 0; i <= cld; i++)
+			_zooms.append(pow(2.0, lmax - i * step));
+	} else
+		_zooms.append(scaleDenominator.min());
+}
+
+void WMSMap::updateTransform()
+{
+	qreal scaleDenominator = _zooms.at(_zoom);
+	ReferencePoint tl, br;
+
+	qreal pixelSpan = sd2res(scaleDenominator);
+	if (_projection.isGeographic())
+		pixelSpan /= deg2rad(WGS84_RADIUS);
+
+	tl.xy = QPoint(0, 0);
+	tl.pp = _boundingBox.topLeft();
+	br.xy = QPoint(_boundingBox.width() / pixelSpan, -_boundingBox.height()
+	  / pixelSpan);
+	br.pp = _boundingBox.bottomRight();
+
+	QList<ReferencePoint> points;
+	points << tl << br;
+	_transform = Transform(points);
+}
+
+bool WMSMap::loadWMS()
+{
+	QString file = tilesDir() + "/" + CAPABILITIES_FILE;
+
+	WMS wms(file, _setup);
+	if (!wms.isValid()) {
+		_errorString = wms.errorString();
+		return false;
+	}
+
+	_projection = wms.projection();
+	_boundingBox = wms.boundingBox();
+	_tileLoader = TileLoader(tileUrl(), tilesDir());
+
+	computeZooms(wms.scaleDenominator());
+	updateTransform();
+
+	return true;
+}
+
+WMSMap::WMSMap(const QString &name, const WMS::Setup &setup, QObject *parent)
+  : Map(parent), _name(name), _setup(setup), _zoom(0), _block(false),
+  _valid(false)
+{
+	if (!QDir().mkpath(tilesDir())) {
+		_errorString = "Error creating tiles dir";
+		return;
+	}
+
+	_valid = loadWMS();
+}
+
+void WMSMap::clearCache()
+{
+	_tileLoader.clearCache();
+	_zoom = 0;
+
+	if (!loadWMS())
+		qWarning("%s: %s\n", qPrintable(_name), qPrintable(_errorString));
+}
+
+void WMSMap::load()
+{
+	connect(TileLoader::downloader(), SIGNAL(finished()), this,
+	  SLOT(emitLoaded()));
+}
+
+void WMSMap::unload()
+{
+	disconnect(TileLoader::downloader(), SIGNAL(finished()), this,
+	  SLOT(emitLoaded()));
+}
+
+void WMSMap::emitLoaded()
+{
+	emit loaded();
+}
+
+QRectF WMSMap::bounds() const
+{
+	qreal pixelSpan = sd2res(_zooms.at(_zoom));
+	if (_projection.isGeographic())
+		pixelSpan /= deg2rad(WGS84_RADIUS);
+	QSizeF size(_boundingBox.width() / pixelSpan, -_boundingBox.height()
+	  / pixelSpan);
+
+	return QRectF(QPointF(0, 0), size);
+}
+
+qreal WMSMap::resolution(const QRectF &rect) const
+{
+	Coordinates tl = xy2ll((rect.topLeft()));
+	Coordinates br = xy2ll(rect.bottomRight());
+
+	qreal ds = tl.distanceTo(br);
+	qreal ps = QLineF(rect.topLeft(), rect.bottomRight()).length();
+
+	return ds/ps;
+}
+
+int WMSMap::zoomFit(const QSize &size, const RectC &br)
+{
+	if (br.isValid()) {
+		QRectF tbr(_projection.ll2xy(br.topLeft()),
+		  _projection.ll2xy(br.bottomRight()));
+		QPointF sc(tbr.width() / size.width(), tbr.height() / size.height());
+		qreal resolution = qMax(qAbs(sc.x()), qAbs(sc.y()));
+		if (_projection.isGeographic())
+			resolution *= deg2rad(WGS84_RADIUS);
+
+		_zoom = 0;
+		for (int i = 0; i < _zooms.size(); i++) {
+			if (sd2res(_zooms.at(i)) < resolution)
+				break;
+			_zoom = i;
+		}
+	} else
+		_zoom = _zooms.size() - 1;
+
+	updateTransform();
+	return _zoom;
+}
+
+int WMSMap::zoomIn()
+{
+	_zoom = qMin(_zoom + 1, _zooms.size() - 1);
+	updateTransform();
+	return _zoom;
+}
+
+int WMSMap::zoomOut()
+{
+	_zoom = qMax(_zoom - 1, 0);
+	updateTransform();
+	return _zoom;
+}
+
+QPointF WMSMap::ll2xy(const Coordinates &c) const
+{
+	return _transform.proj2img(_projection.ll2xy(c));
+}
+
+Coordinates WMSMap::xy2ll(const QPointF &p) const
+{
+	return _projection.xy2ll(_transform.img2proj(p));
+}
+
+void WMSMap::draw(QPainter *painter, const QRectF &rect)
+{
+	QPoint tl = QPoint((int)floor(rect.left() / (qreal)TILE_SIZE),
+	  (int)floor(rect.top() / (qreal)TILE_SIZE));
+	QPoint br = QPoint((int)ceil(rect.right() / (qreal)TILE_SIZE),
+	  (int)ceil(rect.bottom() / (qreal)TILE_SIZE));
+
+	QList<Tile> tiles;
+	for (int i = tl.x(); i < br.x(); i++) {
+		for (int j = tl.y(); j < br.y(); j++) {
+			QPointF ttl(_transform.img2proj(QPointF(i * TILE_SIZE,
+			  j * TILE_SIZE)));
+			QPointF tbr(_transform.img2proj(QPointF(i * TILE_SIZE + TILE_SIZE
+			  - 1, j * TILE_SIZE + TILE_SIZE - 1)));
+			QRectF bbox = _setup.yx()
+			  ? QRectF(QPointF(tbr.y(), tbr.x()), QPointF(ttl.y(), ttl.x()))
+			  : QRectF(ttl, tbr);
+
+			tiles.append(Tile(QPoint(i, j), _zoom, bbox));
+		}
+	}
+
+	if (_block)
+		_tileLoader.loadTilesSync(tiles);
+	else
+		_tileLoader.loadTilesAsync(tiles);
+
+	for (int i = 0; i < tiles.count(); i++) {
+		Tile &t = tiles[i];
+		QPoint tp(t.xy().x() * TILE_SIZE, t.xy().y() * TILE_SIZE);
+		if (t.pixmap().isNull())
+			painter->fillRect(QRect(tp, QSize(TILE_SIZE, TILE_SIZE)),
+			  _backgroundColor);
+		else
+			painter->drawPixmap(tp, t.pixmap());
+	}
+}

src/map/wmsmap.h

@@ -0,0 +1,73 @@
+#ifndef WMSMAP_H
+#define WMSMAP_H
+
+#include "transform.h"
+#include "projection.h"
+#include "map.h"
+#include "wms.h"
+#include "tileloader.h"
+
+
+class WMSMap : public Map
+{
+	Q_OBJECT
+
+public:
+	WMSMap(const QString &name, const WMS::Setup &setup, QObject *parent = 0);
+
+	const QString &name() const {return _name;}
+
+	QRectF bounds() const;
+	qreal resolution(const QRectF &rect) const;
+
+	int zoom() const {return _zoom;}
+	int zoomFit(const QSize &size, const RectC &br);
+	int zoomIn();
+	int zoomOut();
+
+	QPointF ll2xy(const Coordinates &c)
+		{return static_cast<const WMSMap &>(*this).ll2xy(c);}
+	Coordinates xy2ll(const QPointF &p)
+		{return static_cast<const WMSMap &>(*this).xy2ll(p);}
+
+	void draw(QPainter *painter, const QRectF &rect);
+
+	void setBlockingMode(bool block) {_block = block;}
+	void clearCache();
+
+	void load();
+	void unload();
+
+	bool isValid() const {return _valid;}
+	QString errorString() const {return _errorString;}
+
+private slots:
+	void emitLoaded();
+
+private:
+	QString tileUrl() const;
+	qreal sd2res(qreal scaleDenominator) const;
+	QString tilesDir() const;
+	void computeZooms(const RangeF &scaleDenominator);
+	void updateTransform();
+	bool loadWMS();
+
+	QPointF ll2xy(const Coordinates &c) const;
+	Coordinates xy2ll(const QPointF &p) const;
+
+	QString _name;
+
+	WMS::Setup _setup;
+	TileLoader _tileLoader;
+	Projection _projection;
+	Transform _transform;
+	QVector<qreal> _zooms;
+	int _zoom;
+	QRectF _boundingBox;
+	bool _block;
+
+	bool _valid;
+	QString _errorString;
+};
+
+#endif // WMSMAP_H

src/map/wmts.cpp

@@ -8,57 +8,12 @@
 #include <QXmlStreamReader>
 #include "downloader.h"
 #include "pcs.h"
+#include "crs.h"
 #include "wmts.h"
 
 
 Downloader *WMTS::_downloader = 0;
 
-bool WMTS::createProjection(const QString &crs)
-{
-	QStringList list(crs.split(':'));
-	QString authority, code;
-	bool res;
-	int epsg;
-	const PCS *pcs;
-	const GCS *gcs;
-
-	switch (list.size()) {
-		case 2:
-			authority = list.at(0);
-			code = list.at(1);
-			break;
-		case 7:
-			authority = list.at(4);
-			code = list.at(6);
-			break;
-		default:
-			return false;
-	}
-
-	if (authority == "EPSG") {
-		epsg = code.toInt(&res);
-		if (!res)
-			return false;
-
-		if ((pcs = PCS::pcs(epsg))) {
-			_projection = Projection(pcs->gcs(), pcs->method(), pcs->setup(),
-			  pcs->units());
-			return true;
-		} else if ((gcs = GCS::gcs(epsg))) {
-			_projection = Projection(gcs);
-			return true;
-		} else
-			return false;
-	} else if (authority == "OGC") {
-		if (code == "CRS84") {
-			_projection = Projection(GCS::gcs(4326));
-			return true;
-		} else
-			return false;
-	} else
-		return false;
-}
-
 WMTS::TileMatrix WMTS::tileMatrix(QXmlStreamReader &reader, bool yx)
 {
 	TileMatrix matrix;
@@ -104,12 +59,12 @@ void WMTS::tileMatrixSet(QXmlStreamReader &reader, CTX &ctx)
 		else if (reader.name() == "SupportedCRS")
 			crs = reader.readElementText();
 		else if (reader.name() == "TileMatrix")
-			matrixes.insert(tileMatrix(reader, ctx.setup.yx));
+			matrixes.insert(tileMatrix(reader, ctx.setup.yx()));
 		else
 			reader.skipCurrentElement();
 	}
 
-	if (id == ctx.setup.set) {
+	if (id == ctx.setup.set()) {
 		ctx.crs = crs;
 		_matrixes = matrixes;
 	}
@@ -168,7 +123,7 @@ void WMTS::tileMatrixSetLink(QXmlStreamReader &reader, CTX &ctx)
 			reader.skipCurrentElement();
 	}
 
-	if (id == ctx.setup.set) {
+	if (id == ctx.setup.set()) {
 		ctx.set = true;
 		_limits = limits;
 	}
@@ -232,14 +187,14 @@ void WMTS::layer(QXmlStreamReader &reader, CTX &ctx)
 			reader.skipCurrentElement();
 	}
 
-	if (id == ctx.setup.layer) {
+	if (id == ctx.setup.layer()) {
 		ctx.layer = true;
 		_bounds = bounds;
-		if (ctx.setup.rest)
+		if (ctx.setup.rest())
 			_tileUrl = tpl;
-		if (styles.contains(ctx.setup.style))
+		if (styles.contains(ctx.setup.style()))
 			ctx.style = true;
-		if (formats.contains(ctx.setup.format))
+		if (formats.contains(ctx.setup.format()))
 			ctx.format = true;
 	}
 }
@@ -291,26 +246,27 @@ bool WMTS::parseCapabilities(const QString &path, const Setup &setup)
 	}
 
 	if (!ctx.layer) {
-		_errorString = ctx.setup.layer + ": layer not provided";
+		_errorString = ctx.setup.layer() + ": layer not provided";
 		return false;
 	}
 	if (!ctx.style) {
-		_errorString = ctx.setup.style + ": style not provided";
+		_errorString = ctx.setup.style() + ": style not provided";
 		return false;
 	}
-	if (!ctx.setup.rest && !ctx.format) {
+	if (!ctx.setup.rest() && !ctx.format) {
-		_errorString = ctx.setup.format + ": format not provided";
+		_errorString = ctx.setup.format() + ": format not provided";
 		return false;
 	}
 	if (!ctx.set) {
-		_errorString = ctx.setup.set + ": set not provided";
+		_errorString = ctx.setup.set() + ": set not provided";
 		return false;
 	}
 	if (ctx.crs.isNull()) {
 		_errorString = "Missing CRS definition";
 		return false;
 	}
-	if (!createProjection(ctx.crs)) {
+	_projection = CRS::projection(ctx.crs);
+	if (_projection.isNull()) {
 		_errorString = ctx.crs + ": unknown CRS";
 		return false;
 	}
@@ -318,7 +274,7 @@ bool WMTS::parseCapabilities(const QString &path, const Setup &setup)
 		_errorString = "No usable tile matrix found";
 		return false;
 	}
-	if (ctx.setup.rest && _tileUrl.isNull()) {
+	if (ctx.setup.rest() && _tileUrl.isNull()) {
 		_errorString = "Missing tile URL template";
 		return false;
 	}
@@ -345,41 +301,41 @@ bool WMTS::getCapabilities(const QString &url, const QString &file)
 	}
 }
 
-bool WMTS::load(const QString &file, const WMTS::Setup &setup)
+WMTS::WMTS(const QString &file, const WMTS::Setup &setup) : _valid(false)
 {
-	QString capaUrl = setup.rest ? setup.url :
+	QString capaUrl = setup.rest() ? setup.url() :
 	  QString("%1?service=WMTS&Version=1.0.0&request=GetCapabilities")
-	  .arg(setup.url);
+	  .arg(setup.url());
 
 	if (!QFileInfo(file).exists())
 		if (!getCapabilities(capaUrl, file))
-			return false;
+			return;
 	if (!parseCapabilities(file, setup))
-		return false;
+		return;
 
-	if (!setup.rest) {
+	if (!setup.rest()) {
 		_tileUrl = QString("%1?service=WMTS&Version=1.0.0&request=GetTile"
 		  "&Format=%2&Layer=%3&Style=%4&TileMatrixSet=%5&TileMatrix=$z"
-		  "&TileRow=$y&TileCol=$x").arg(setup.url).arg(setup.format)
+		  "&TileRow=$y&TileCol=$x").arg(setup.url()).arg(setup.format())
-		  .arg(setup.layer).arg(setup.style).arg(setup.set);
+		  .arg(setup.layer()).arg(setup.style()).arg(setup.set());
-		for (int i = 0; i < setup.dimensions.size(); i++) {
+		for (int i = 0; i < setup.dimensions().size(); i++) {
-			const QPair<QString, QString> &dim = setup.dimensions.at(i);
+			const QPair<QString, QString> &dim = setup.dimensions().at(i);
 			_tileUrl.append(QString("&%1=%2").arg(dim.first).arg(dim.second));
 		}
 	} else {
-		_tileUrl.replace("{Style}", setup.style, Qt::CaseInsensitive);
+		_tileUrl.replace("{Style}", setup.style(), Qt::CaseInsensitive);
-		_tileUrl.replace("{TileMatrixSet}", setup.set, Qt::CaseInsensitive);
+		_tileUrl.replace("{TileMatrixSet}", setup.set(), Qt::CaseInsensitive);
 		_tileUrl.replace("{TileMatrix}", "$z", Qt::CaseInsensitive);
 		_tileUrl.replace("{TileRow}", "$y", Qt::CaseInsensitive);
 		_tileUrl.replace("{TileCol}", "$x", Qt::CaseInsensitive);
-		for (int i = 0; i < setup.dimensions.size(); i++) {
+		for (int i = 0; i < setup.dimensions().size(); i++) {
-			const QPair<QString, QString> &dim = setup.dimensions.at(i);
+			const QPair<QString, QString> &dim = setup.dimensions().at(i);
 			_tileUrl.replace(QString("{%1}").arg(dim.first), dim.second,
 			  Qt::CaseInsensitive);
 		}
 	}
 
-	return true;
+	_valid = true;
 }
 
 QList<WMTS::Zoom> WMTS::zooms() const
@@ -405,17 +361,17 @@ QList<WMTS::Zoom> WMTS::zooms() const
 #ifndef QT_NO_DEBUG
 QDebug operator<<(QDebug dbg, const WMTS::Setup &setup)
 {
-	dbg.nospace() << "Setup(" << setup.url << ", " << setup.layer << ", "
+	dbg.nospace() << "Setup(" << setup.url() << ", " << setup.layer() << ", "
-	  << setup.set << ", " << setup.style << ", " << setup.format << ", "
+	  << setup.set() << ", " << setup.style() << ", " << setup.format() << ", "
-	  << setup.rest << ")";
+	  << setup.rest() << ")";
 	return dbg.space();
 }
 
 QDebug operator<<(QDebug dbg, const WMTS::Zoom &zoom)
 {
-	dbg.nospace() << "Zoom(" << zoom.id << ", " << zoom.scaleDenominator << ", "
+	dbg.nospace() << "Zoom(" << zoom.id() << ", " << zoom.scaleDenominator()
-	  << zoom.topLeft << ", " << zoom.tile << ", " << zoom.matrix << ", "
+	  << ", " << zoom.topLeft() << ", " << zoom.tile() << ", " << zoom.matrix()
-	  << zoom.limits << ")";
+	  << ", " << zoom.limits() << ")";
 	return dbg.space();
 }
 #endif // QT_NO_DEBUG

src/map/wmts.h

@@ -15,49 +15,73 @@ class QXmlStreamReader;
 class WMTS
 {
 public:
-	struct Setup {
+	class Setup
-		QString url;
+	{
-		QString layer;
+	public:
-		QString set;
-		QString style;
-		QString format;
-		bool rest;
-		bool yx;
-		QList<QPair<QString, QString> > dimensions;
-
 		Setup(const QString &url, const QString &layer, const QString &set,
 		  const QString &style, const QString &format, bool rest, bool yx,
 		  const QList<QPair<QString, QString> > &dimensions) :
-		  url(url), layer(layer), set(set), style(style), format(format),
+		  _url(url), _layer(layer), _set(set), _style(style), _format(format),
-		  rest(rest), yx(yx), dimensions(dimensions) {}
+		  _rest(rest), _yx(yx), _dimensions(dimensions) {}
+
+		const QString &url() const {return _url;}
+		const QString &layer() const {return _layer;}
+		const QString &set() const {return _set;}
+		const QString &style() const {return _style;}
+		const QString &format() const {return _format;}
+		bool rest() const {return _rest;}
+		bool yx() const {return _yx;}
+		const QList<QPair<QString, QString> > &dimensions() const
+		  {return _dimensions;}
+
+	private:
+		QString _url;
+		QString _layer;
+		QString _set;
+		QString _style;
+		QString _format;
+		bool _rest;
+		bool _yx;
+		QList<QPair<QString, QString> > _dimensions;
 	};
 
-	struct Zoom {
+	class Zoom
-		QString id;
+	{
-		qreal scaleDenominator;
+	public:
-		QPointF topLeft;
-		QSize tile;
-		QSize matrix;
-		QRect limits;
-
-		Zoom() {}
 		Zoom(const QString &id, qreal scaleDenominator, const QPointF &topLeft,
 		  const QSize &tile, const QSize &matrix, const QRect &limits) :
-		  id(id), scaleDenominator(scaleDenominator), topLeft(topLeft),
+		  _id(id), _scaleDenominator(scaleDenominator), _topLeft(topLeft),
-		  tile(tile), matrix(matrix), limits(limits) {}
+		  _tile(tile), _matrix(matrix), _limits(limits) {}
 		bool operator<(const Zoom &other) const
-		  {return scaleDenominator > other.scaleDenominator;}
+		  {return _scaleDenominator > other._scaleDenominator;}
+
+		const QString &id() const {return _id;}
+		qreal scaleDenominator() const {return _scaleDenominator;}
+		const QPointF &topLeft() const {return _topLeft;}
+		const QSize &tile() const {return _tile;}
+		const QSize &matrix() const {return _matrix;}
+		const QRect &limits() const {return _limits;}
+
+	private:
+		QString _id;
+		qreal _scaleDenominator;
+		QPointF _topLeft;
+		QSize _tile;
+		QSize _matrix;
+		QRect _limits;
 	};
 
-	bool load(const QString &path, const Setup &setup);
+
-	const QString &errorString() const {return _errorString;}
+	WMTS(const QString &path, const Setup &setup);
 
 	const RectC &bounds() const {return _bounds;}
 	QList<Zoom> zooms() const;
 	const Projection &projection() const {return _projection;}
-	QString tileUrl() const {return _tileUrl;}
+	const QString &tileUrl() const {return _tileUrl;}
+
+	bool isValid() const {return _valid;}
+	const QString &errorString() const {return _errorString;}
 
-	static Downloader *downloader() {return _downloader;}
 	static void setDownloader(Downloader *downloader)
 	  {_downloader = downloader;}
 
@@ -113,7 +137,6 @@ private:
 	void capabilities(QXmlStreamReader &reader, CTX &ctx);
 	bool parseCapabilities(const QString &path, const Setup &setup);
 	bool getCapabilities(const QString &url, const QString &file);
-	bool createProjection(const QString &crs);
 
 	QSet<TileMatrix> _matrixes;
 	QSet<MatrixLimits> _limits;
@@ -121,6 +144,7 @@ private:
 	Projection _projection;
 	QString _tileUrl;
 
+	bool _valid;
 	QString _errorString;
 
 	static Downloader *_downloader;

src/map/wmtsmap.cpp

@@ -10,30 +10,50 @@
 
 #define CAPABILITIES_FILE "capabilities.xml"
 
-WMTSMap::WMTSMap(const QString &name, const WMTS::Setup &setup, QObject *parent)
+bool WMTSMap::loadWMTS()
-  : Map(parent), _name(name), _setup(setup), _zoom(0), _valid(false)
 {
-	QString dir(TILES_DIR + "/" + _name);
+	QString file = tilesDir() + "/" + CAPABILITIES_FILE;
-	QString file = dir + "/" + CAPABILITIES_FILE;
 
-	if (!QDir().mkpath(dir)) {
+	WMTS wmts(file, _setup);
+	if (!wmts.isValid()) {
+		_errorString = wmts.errorString();
+		return false;
+	}
+
+	_bounds = wmts.bounds();
+	_zooms = wmts.zooms();
+	_projection = wmts.projection();
+	_tileLoader = TileLoader(wmts.tileUrl(), tilesDir());
+
+	updateTransform();
+
+	return true;
+}
+
+WMTSMap::WMTSMap(const QString &name, const WMTS::Setup &setup, QObject *parent)
+  : Map(parent), _name(name), _setup(setup), _zoom(0), _block(false),
+  _valid(false)
+{
+	if (!QDir().mkpath(tilesDir())) {
 		_errorString = "Error creating tiles dir";
 		return;
 	}
 
-	WMTS wmts;
+	_valid = loadWMTS();
-	if (!wmts.load(file, _setup)) {
+}
-		_errorString = wmts.errorString();
-		return;
-	}
-	_bounds = wmts.bounds();
-	_zooms = wmts.zooms();
-	_projection = wmts.projection();
-	_tileLoader = TileLoader(wmts.tileUrl(), dir);
-	updateTransform();
 
-	_block = false;
+void WMTSMap::clearCache()
-	_valid = true;
+{
+	_tileLoader.clearCache();
+	_zoom = 0;
+
+	if (!loadWMTS())
+		qWarning("%s: %s\n", qPrintable(_name), qPrintable(_errorString));
+}
+
+QString WMTSMap::tilesDir() const
+{
+	return QString(TILES_DIR + "/" + _name);
 }
 
 qreal WMTSMap::sd2res(qreal scaleDenominator) const
@@ -46,17 +66,17 @@ void WMTSMap::updateTransform()
 	const WMTS::Zoom &z = _zooms.at(_zoom);
 	ReferencePoint tl, br;
 
-	qreal pixelSpan = sd2res(z.scaleDenominator);
+	qreal pixelSpan = sd2res(z.scaleDenominator());
 	if (_projection.isGeographic())
 		pixelSpan /= deg2rad(WGS84_RADIUS);
-	QPointF tileSpan(z.tile.width() * pixelSpan, z.tile.height() * pixelSpan);
+	QPointF tileSpan(z.tile().width() * pixelSpan, z.tile().height() * pixelSpan);
-	QPointF bottomRight(z.topLeft.x() + tileSpan.x() * z.matrix.width(),
+	QPointF bottomRight(z.topLeft().x() + tileSpan.x() * z.matrix().width(),
-	  z.topLeft.y() - tileSpan.y() * z.matrix.height());
+	  z.topLeft().y() - tileSpan.y() * z.matrix().height());
 
 	tl.xy = QPoint(0, 0);
-	tl.pp = z.topLeft;
+	tl.pp = z.topLeft();
-	br.xy = QPoint(z.tile.width() * z.matrix.width(),
+	br.xy = QPoint(z.tile().width() * z.matrix().width(),
-	  z.tile.height() * z.matrix.height());
+	  z.tile().height() * z.matrix().height());
 	br.pp = bottomRight;
 
 	QList<ReferencePoint> points;
@@ -76,26 +96,6 @@ void WMTSMap::unload()
 	  SLOT(emitLoaded()));
 }
 
-void WMTSMap::clearCache()
-{
-	QString dir(TILES_DIR + "/" + _name);
-	QString file = dir + "/" + CAPABILITIES_FILE;
-
-	_tileLoader.clearCache();
-
-	WMTS wmts;
-	if (!wmts.load(file, _setup))
-		return;
-	_bounds = wmts.bounds();
-	_zooms = wmts.zooms();
-	_projection = wmts.projection();
-	_tileLoader = TileLoader(wmts.tileUrl(), dir);
-
-	if (_zoom >= _zooms.size())
-		_zoom = _zooms.size() - 1;
-	updateTransform();
-}
-
 void WMTSMap::emitLoaded()
 {
 	emit loaded();
@@ -106,11 +106,12 @@ QRectF WMTSMap::bounds() const
 	const WMTS::Zoom &z = _zooms.at(_zoom);
 	QRectF tileBounds, bounds;
 
-	tileBounds = (z.limits.isNull()) ?
+	tileBounds = (z.limits().isNull()) ?
-	  QRectF(QPointF(0, 0), QSize(z.tile.width() * z.matrix.width(),
+	  QRectF(QPointF(0, 0), QSize(z.tile().width() * z.matrix().width(),
-	  z.tile.height() * z.matrix.height())) : QRectF(QPointF(z.limits.left()
+	  z.tile().height() * z.matrix().height()))
-	  * z.tile.width(), z.limits.top() * z.tile.height()), QSize(z.tile.width()
+	  : QRectF(QPointF(z.limits().left() * z.tile().width(), z.limits().top()
-	  * z.limits.width(), z.tile.height() * z.limits.height()));
+	  * z.tile().height()), QSize(z.tile().width() * z.limits().width(),
+	  z.tile().height() * z.limits().height()));
 
 	bounds = _bounds.isValid() ? QRectF(ll2xy(_bounds.topLeft()),
 	  ll2xy(_bounds.bottomRight())) : QRectF();
@@ -130,7 +131,7 @@ int WMTSMap::zoomFit(const QSize &size, const RectC &br)
 
 		_zoom = 0;
 		for (int i = 0; i < _zooms.size(); i++) {
-			if (sd2res(_zooms.at(i).scaleDenominator) < resolution)
+			if (sd2res(_zooms.at(i).scaleDenominator()) < resolution)
 				break;
 			_zoom = i;
 		}
@@ -169,15 +170,15 @@ int WMTSMap::zoomOut()
 void WMTSMap::draw(QPainter *painter, const QRectF &rect)
 {
 	const WMTS::Zoom &z = _zooms.at(_zoom);
-	QPoint tl = QPoint((int)floor(rect.left() / (qreal)z.tile.width()),
+	QPoint tl = QPoint((int)floor(rect.left() / (qreal)z.tile().width()),
-	  (int)floor(rect.top() / (qreal)z.tile.height()));
+	  (int)floor(rect.top() / (qreal)z.tile().height()));
-	QPoint br = QPoint((int)ceil(rect.right() / (qreal)z.tile.width()),
+	QPoint br = QPoint((int)ceil(rect.right() / (qreal)z.tile().width()),
-	  (int)ceil(rect.bottom() / (qreal)z.tile.height()));
+	  (int)ceil(rect.bottom() / (qreal)z.tile().height()));
 
 	QList<Tile> tiles;
 	for (int i = tl.x(); i < br.x(); i++)
 		for (int j = tl.y(); j < br.y(); j++)
-			tiles.append(Tile(QPoint(i, j), z.id));
+			tiles.append(Tile(QPoint(i, j), z.id()));
 
 	if (_block)
 		_tileLoader.loadTilesSync(tiles);
@@ -186,9 +187,9 @@ void WMTSMap::draw(QPainter *painter, const QRectF &rect)
 
 	for (int i = 0; i < tiles.count(); i++) {
 		Tile &t = tiles[i];
-		QPoint tp(t.xy().x() * z.tile.width(), t.xy().y() * z.tile.height());
+		QPoint tp(t.xy().x() * z.tile().width(), t.xy().y() * z.tile().height());
 		if (t.pixmap().isNull())
-			painter->fillRect(QRect(tp, z.tile), _backgroundColor);
+			painter->fillRect(QRect(tp, z.tile()), _backgroundColor);
 		else
 			painter->drawPixmap(tp, t.pixmap());
 	}

src/map/wmtsmap.h

@@ -45,7 +45,9 @@ private slots:
 	void emitLoaded();
 
 private:
+	bool loadWMTS();
 	qreal sd2res(qreal scaleDenominator) const;
+	QString tilesDir() const;
 	void updateTransform();
 
 	QPointF ll2xy(const Coordinates &c) const;