Added initial map support

src/downloader.cpp

@@ -0,0 +1,63 @@
+#include <QFile>
+#include <QFileInfo>
+#include "downloader.h"
+
+#include <QDebug>
+
+
+Downloader::Downloader()
+{
+	connect(&manager, SIGNAL(finished(QNetworkReply*)),
+			SLOT(downloadFinished(QNetworkReply*)));
+}
+
+void Downloader::doDownload(const Download &dl)
+{
+	QUrl url(dl.url());
+	QNetworkRequest request(url);
+	request.setAttribute(QNetworkRequest::User, QVariant(dl.file()));
+	QNetworkReply *reply = manager.get(request);
+
+	currentDownloads.append(reply);
+}
+
+bool Downloader::saveToDisk(const QString &filename, QIODevice *data)
+{
+	QFile file(filename);
+
+	if (!file.open(QIODevice::WriteOnly)) {
+		fprintf(stderr, "Could not open %s for writing: %s\n",
+		  qPrintable(filename), qPrintable(file.errorString()));
+		return false;
+	}
+
+	file.write(data->readAll());
+	file.close();
+
+	return true;
+}
+
+void Downloader::downloadFinished(QNetworkReply *reply)
+{
+	QUrl url = reply->url();
+	if (reply->error()) {
+		fprintf(stderr, "Download of %s failed: %s\n",
+		  url.toEncoded().constData(), qPrintable(reply->errorString()));
+	} else {
+		QString filename = reply->request().attribute(QNetworkRequest::User)
+		  .toString();
+		saveToDisk(filename, reply);
+	}
+
+	currentDownloads.removeAll(reply);
+	reply->deleteLater();
+
+	if (currentDownloads.isEmpty())
+		emit finished();
+}
+
+void Downloader::get(const QList<Download> &list)
+{
+	for (int i = 0; i < list.count(); i++)
+		doDownload(list.at(i));
+}

src/downloader.h

@@ -0,0 +1,52 @@
+#ifndef DOWNLOADER_H
+#define DOWNLOADER_H
+
+#include <QNetworkAccessManager>
+#include <QNetworkRequest>
+#include <QNetworkReply>
+#include <QUrl>
+#include <QList>
+
+
+class Download
+{
+public:
+	Download(const QString &url, const QString &file)
+		{_url = url; _file = file;}
+	const QString& url() const {return _url;}
+	const QString& file() const {return _file;}
+
+private:
+	QString _url;
+	QString _file;
+};
+
+
+class Downloader : public QObject
+{
+	Q_OBJECT
+
+public:
+	static Downloader& instance()
+		{static Downloader i; return i;}
+	void get(const QList<Download> &list);
+
+signals:
+	void finished();
+
+private slots:
+	void downloadFinished(QNetworkReply *reply);
+
+private:
+	Downloader();
+	Downloader(Downloader const&);
+	void operator=(Downloader const&);
+
+	void doDownload(const Download &dl);
+	bool saveToDisk(const QString &filename, QIODevice *data);
+
+	QNetworkAccessManager manager;
+	QList<QNetworkReply *> currentDownloads;
+};
+
+#endif // DOWNLOADER_H

src/map.cpp

@@ -0,0 +1,54 @@
+#include <QFileInfo>
+#include <QDir>
+#include "downloader.h"
+#include "ll.h"
+#include "map.h"
+
+#include <QDebug>
+
+#define TILES_DIR "tiles"
+
+Map::Map(const QString &name, const QString &url)
+{
+	_name = name;
+	_url = url;
+
+	connect(&Downloader::instance(), SIGNAL(finished()), this,
+	  SLOT(emitLoaded()));
+
+	QDir::home().mkpath(QString(TILES_DIR"/%1").arg(_name));
+}
+
+void Map::emitLoaded()
+{
+	emit loaded();
+}
+
+void Map::loadTiles(QList<Tile> &list)
+{
+	QList<Download> dl;
+
+	for (int i = 0; i < list.size(); ++i) {
+		Tile &t = list[i];
+		QString file = QString("%1/"TILES_DIR"/%2/%3-%4-%5.png")
+		  .arg(QDir::homePath()).arg(_name).arg(t.zoom()).arg(t.xy().rx())
+		  .arg(t.xy().ry());
+		QFileInfo fi(file);
+
+		if (fi.exists())
+			t.pixmap().load(file);
+		else {
+			t.pixmap() = QPixmap(TILE_SIZE, TILE_SIZE);
+			t.pixmap().fill();
+
+			QString url(_url);
+			url.replace("$z", QString::number(t.zoom()));
+			url.replace("$x", QString::number(t.xy().x()));
+			url.replace("$y", QString::number(t.xy().y()));
+			dl.append(Download(url, file));
+		}
+	}
+
+	if (!dl.empty())
+		Downloader::instance().get(dl);
+}

src/map.h

@@ -0,0 +1,45 @@
+#ifndef MAP_H
+#define MAP_H
+
+#include <QPixmap>
+#include "downloader.h"
+
+
+class Tile
+{
+public:
+	Tile(const QPoint &xy, int zoom)
+		{_xy = xy; _zoom = zoom;}
+
+	int zoom() {return _zoom;}
+	QPoint& xy() {return _xy;}
+	QPixmap& pixmap() {return _pixmap;}
+
+private:
+	int _zoom;
+	QPoint _xy;
+	QPixmap _pixmap;
+};
+
+class Map : public QObject
+{
+	Q_OBJECT
+
+signals:
+	void loaded();
+
+public:
+	Map(const QString &name, const QString &url);
+
+	const QString &name() {return _name;}
+	void loadTiles(QList<Tile> &list);
+
+private slots:
+	void emitLoaded();
+
+private:
+	QString _name;
+	QString _url;
+};
+
+#endif // MAP_H