version 2.21.1

Map download API
mapviewer download feature

CMakeLists.txt

@@ -4,7 +4,7 @@ cmake_policy(SET CMP0072 NEW) #  FindOpenGL prefers GLVND by default
 project(QAD)
 set(QAD_MAJOR    2)
 set(QAD_MINOR    21)
-set(QAD_REVISION 0)
+set(QAD_REVISION 1)
 set(QAD_SUFFIX   )
 set(QAD_COMPANY  SHS)
 set(QAD_DOMAIN   org.SHS)

libs/map/mapview.cpp

@@ -7,8 +7,10 @@
 
 #include <QGraphicsPixmapItem>
 #include <QGraphicsScene>
+#include <QMetaMethod>
 #include <QPainter>
 #include <QPixmap>
+#include <QProgressDialog>
 #include <QScrollBar>
 #include <QWheelEvent>
 
@@ -19,7 +21,9 @@ MapView::MapView(QWidget * parent): QWidget(parent) {
 	downloader = new OSMDownloader(this);
 	cache      = new OSMTileCache(this);
 	setMouseTracking(true);
-	connect(cache, &OSMTileCache::tileReady, this, [this]() { drawBackground(); });
+	connect(cache, &OSMTileCache::tileReady, this, [this]() {
+		if (!is_downloading) drawBackground();
+	});
 	int size = 16;
 	QPixmap px(QSize(size, size) * 2);
 	QPainter p(&px);
@@ -77,6 +81,88 @@ void MapView::setZoom(double z) {
 }
 
 
+QString MapView::cachePath() const {
+	return cache->cacheRoot();
+}
+
+
+void MapView::setCachePath(const QString & p) {
+	cache->setCacheRoot(p);
+	drawBackground();
+}
+
+
+void collectDownloadIndeces(QQueue<OSM::TileIndex> & indeces, OSM::TileIndex index, int target_zoom_level) {
+	indeces << index;
+	if (index.z >= target_zoom_level) return;
+	int z = index.z + 1;
+	int x = index.x * 2;
+	int y = index.y * 2;
+	for (int i = 0; i < 2; ++i) {
+		for (int j = 0; j < 2; ++j) {
+			collectDownloadIndeces(indeces, (OSM::TileIndex){z, x + i, y + j}, target_zoom_level);
+		}
+	}
+}
+
+
+void MapView::downloadCurrentView(int target_zoom_level) {
+	int sx            = qMax(0, (int)floor(view_rect.left() * tiles_side));
+	int sy            = qMax(0, (int)floor(view_rect.top() * tiles_side));
+	int ex            = qMin(tiles_side, (int)ceil(view_rect.right() * tiles_side));
+	int ey            = qMin(tiles_side, (int)ceil(view_rect.bottom() * tiles_side));
+	target_zoom_level = qMin(target_zoom_level, max_level);
+	QQueue<OSM::TileIndex> indeces;
+	for (int ix = sx; ix < ex; ++ix) {
+		for (int iy = sy; iy < ey; ++iy) {
+			collectDownloadIndeces(indeces, (OSM::TileIndex){zoom_level, ix, iy}, target_zoom_level);
+		}
+	}
+	if (indeces.size() < 4) return;
+	QProgressDialog dialog;
+	dialog.setWindowTitle(tr("MapView"));
+	dialog.setLabelText(tr("Downloading ..."));
+	dialog.setCancelButtonText(tr("Cancel"));
+	dialog.setMaximum(indeces.size());
+	dialog.setValue(0);
+	downloader->clearQueue();
+	std::atomic_int value(0);
+	auto conn = connect(
+		downloader,
+		&OSMDownloader::tileDone,
+		this,
+		[this, &dialog, &indeces, &value]() {
+			// qDebug() << "done";
+			value++;
+			int cv = value;
+			dialog.setValue(cv);
+			if (indeces.isEmpty())
+				dialog.cancel();
+			else {
+				downloader->queueTile(indeces.dequeue(), true);
+			}
+		},
+		Qt::DirectConnection);
+	connect(&dialog, &QProgressDialog::canceled, this, [this, &dialog]() {
+		dialog.cancel();
+		downloader->clearQueue();
+	});
+	is_downloading = true;
+	for (int i = 0; i < 1; ++i)
+		downloader->queueTile(indeces.dequeue());
+	// dialog.exec();
+	dialog.setModal(true);
+	dialog.show();
+	while (!dialog.isHidden()) {
+		QThread::msleep(1);
+		QApplication::processEvents();
+	}
+	disconnect(conn);
+	is_downloading = false;
+	drawBackground();
+}
+
+
 void MapView::mousePressEvent(QMouseEvent * e) {
 	is_pan           = false;
 	press_point      = e->pos();

libs/map/mapview.h

@@ -51,11 +51,18 @@ public:
 	void setCenter(QPointF c);
 	void setCenter(QGeoCoordinate c) { setCenter(QPointF(c.latitude(), c.longitude())); }
 
+	int getCurrentZoomLevel() const { return zoom_level; }
+	int getMaximumZoomLevel() const { return max_level; }
 	double getZoom() const { return zoom_; }
 	void setZoom(double z);
 
 	QPointF clickedCoordinate() const { return last_click_coord; }
 
+	QString cachePath() const;
+	void setCachePath(const QString & p);
+
+	void downloadCurrentView(int target_zoom_level = 17);
+
 protected:
 	QSize sizeHint() const override { return QSize(200, 200); }
 	void mousePressEvent(QMouseEvent * e) override;
@@ -90,7 +97,7 @@ private:
 	QRectF view_rect;
 	QVector<MapItemBase *> items_;
 	QBrush brush_tr;
-	bool is_pan  = false;
+	bool is_pan = false, is_downloading = false;
 	double zoom_ = 1., scale_ = 1., px2m = 1.;
 	int zoom_level = 0, tiles_side = 1, max_level = 19;
 

libs/map/osm_downloader.cpp

@@ -20,14 +20,32 @@ OSMDownloader::~OSMDownloader() {
 }
 
 
-void OSMDownloader::queueTile(OSM::TileIndex index) {
+bool OSMDownloader::queueTile(OSM::TileIndex index, bool force) {
 	// auto hash = tile.hash();
+	bool ret = false;
 	cond_mutex.lock();
-	if (!queue.contains(index) && !in_progress.contains(index.hash())) {
+	if ((!queue.contains(index) && !in_progress.contains(index.hash())) || force) {
 		queue.enqueue(index);
 		cond.wakeOne();
+		ret = true;
 	}
 	cond_mutex.unlock();
+	return ret;
+}
+
+
+void OSMDownloader::queueTiles(QList<OSM::TileIndex> indeces) {
+	cond_mutex.lock();
+	queue << indeces;
+	cond.wakeOne();
+	cond_mutex.unlock();
+}
+
+
+void OSMDownloader::clearQueue() {
+	cond_mutex.lock();
+	queue.clear();
+	cond_mutex.unlock();
 }
 
 
@@ -51,6 +69,7 @@ void OSMDownloader::requestTile(OSM::TileIndex index) {
 		cond_mutex.lock();
 		in_progress.remove(index.hash());
 		cond_mutex.unlock();
+		emit tileDone();
 	});
 }
 

libs/map/osm_downloader_p.h

@@ -40,8 +40,9 @@ public:
 	explicit OSMDownloader(MapView * p);
 	~OSMDownloader();
 
-	void queueTile(OSM::TileIndex index);
-
+	bool queueTile(OSM::TileIndex index, bool force = false);
+	void queueTiles(QList<OSM::TileIndex> indeces);
+	void clearQueue();
 
 private:
 	void run() override;
@@ -60,6 +61,7 @@ public slots:
 private slots:
 
 signals:
+	void tileDone();
 };
 
 

libs/map/osm_geocoding.cpp

@@ -37,7 +37,7 @@ QPointF OSMGeocodingResult::resultCoordinate() const {
 
 
 void OSMGeocodingResult::requestDone() {
-	emit ready();
+	emit ready(this);
 	deleteLater();
 }
 

libs/map/osm_geocoding.h

@@ -52,7 +52,7 @@ private:
 	QNetworkReply * reply = nullptr;
 
 signals:
-	void ready();
+	void ready(OSMGeocodingResult *);
 };
 
 

libs/map/osm_tile_cache.cpp

@@ -7,11 +7,8 @@
 OSMTileCache::OSMTileCache(MapView * p): QThread() {
 	qRegisterMetaType<OSM::TileIndex>();
 	qRegisterMetaType<OSM::TilePixmap>();
-	parent     = p;
-	cache_root = QAD::userPath(QAD::ltCache, "map_osm") + "/";
-	cache_dir.setPath(cache_root);
-	qDebug() << "[OSMTileCache] save cache to" << cache_root;
-	if (!cache_dir.exists()) cache_dir.mkpath(".");
+	parent = p;
+	setCacheRoot(QAD::userPath(QAD::ltCache, "map_osm") + "/");
 	setAdditionalCacheSize(64);
 	start();
 }
@@ -57,6 +54,14 @@ OSM::TilePixmap OSMTileCache::getTile(OSM::TileIndex index, QRectF & rect_src) {
 }
 
 
+void OSMTileCache::setCacheRoot(const QString & p) {
+	cache_root = p;
+	cache_dir.setPath(cache_root);
+	qDebug() << "[OSMTileCache] Cache dir" << cache_root;
+	if (!cache_dir.exists()) cache_dir.mkpath(".");
+}
+
+
 OSM::TilePixmap OSMTileCache::getTileFromCache(OSM::TileIndex index) {
 	OSM::TilePixmap ret;
 	ret.index   = index;

libs/map/osm_tile_cache_p.h

@@ -50,6 +50,9 @@ public:
 	void tileDownloaded(OSM::TileIndex index, const QPixmap & pixmap);
 	OSM::TilePixmap getTile(OSM::TileIndex index, QRectF & rect_src);
 
+	QString cacheRoot() const { return cache_root; }
+	void setCacheRoot(const QString & p);
+
 private:
 	OSM::TilePixmap getTileFromCache(OSM::TileIndex index);
 	void updateCacheSize();

utils/mapviewer/CMakeLists.txt

@@ -10,6 +10,6 @@ if (PIP_FOUND)
 		set(APP_ICON "icons/maps.png")
 	endif()
 	set(APP_INFO "Map viewer")
-	qad_application(${PROJECT_NAME} "Gui;Widgets" "qad_map")
+	qad_application(${PROJECT_NAME} "Gui;Widgets" "qad_map;qad_application")
 
 endif()

utils/mapviewer/main.cpp

@@ -1,72 +1,12 @@
-#include "mapitemellipse.h"
-#include "mapitemgeopolygon.h"
-#include "mapitemgeopolyline.h"
-#include "mapitemimage.h"
-#include "mapitempolygon.h"
-#include "mapitemtext.h"
-#include "mapview.h"
+#include "mainwindow.h"
 #include "qad_types.h"
 
 #include <QApplication>
-#include <QDateTime>
-#include <QDebug>
-#include <QTimer>
-#include <math.h>
 
 int main(int argc, char * argv[]) {
 	QApplication a(argc, argv);
 	enableHighDPI();
-	MapView w;
-	w.resize(800, 600);
+	MainWindow w;
 	w.show();
-	/*QVector<QPointF> g        = {QPointF(55.583055, 37.580008), QPointF(55.583055, 37.590008), QPointF(55.593055, 37.580008)};
-	QVector<QPointF> p        = {QPointF(0, 0), QPointF(200, 0), QPointF(0, 100)};
-	MapItemPolygon * pol      = new MapItemPolygon(QPolygonF(p));
-	MapItemGeoPolyline * gpol = new MapItemGeoPolyline(QPolygonF(g));
-	MapItemEllipse * ell      = new MapItemEllipse(QPointF(), 50, 50);
-	MapItemImage * im         = new MapItemImage(QPixmap(":/icons/maps.png"));
-	MapItemText * it          = new MapItemText(QString::fromUtf8("Это Ваня!"));
-	im->setPosition({55.583055, 37.580008});
-	im->setScale(0.2, 0.5);
-	im->setAlignment(Qt::AlignRight | Qt::AlignTop);
-	im->setCursor(Qt::PointingHandCursor);
-	im->setInteracive(true);
-	it->setPosition({55.583055, 37.580008});
-	it->setBrush(QColor(127, 0, 0, 127));
-	it->setPen(QColor(64, 255, 64));
-	it->setFont(QFont("times", 18));
-	it->setCursor(Qt::OpenHandCursor);
-	it->setInteracive(true);
-	pol->setPosition({55.583055, 37.580008});
-	pol->setUnits(MapItemNonGeoGeometryBase::Pixels);
-	gpol->setBrush(QColor(0, 0, 255, 64));
-	gpol->setPen(QPen(QColor(64, 64, 255), 3));
-	ell->setPosition({55.583055, 37.580008});
-	ell->setStartAngle(-20);
-	ell->setEndAngle(20);
-	ell->setEllipse(QPointF(100, 0), 50, 50);
-	ell->setInteracive(true);
-	QTimer t;
-	QObject::connect(&w, &MapView::itemClicked, [](MapItemBase * item) { qDebug() << "click" << item; });
-	QObject::connect(&w, &MapView::itemEntered, [](MapItemBase * item) { qDebug() << "enter" << item; });
-	QObject::connect(&w, &MapView::itemLeaved, [](MapItemBase * item) { qDebug() << "leave" << item; });
-
-	QObject::connect(&t, &QTimer::timeout, [im, it, pol, ell]() {
-		im->rotate(1);
-		it->rotate(-0.1);
-		// pol->rotate(0.2);
-		ell->rotate(-0.2);
-		static double t = 0.;
-		t += 0.025;
-		ell->setScale((sin(t) / 2. + 1.));
-	});
-	t.start(100);
-	w.addItem(im);
-	w.addItem(gpol);
-	w.addItem(pol);
-	w.addItem(it);
-	w.addItem(ell);*/
-	w.centerTo({55.583055, 37.580008});
-	w.zoomTo(2);
 	return a.exec();
 }

utils/mapviewer/mainwindow.cpp

@@ -0,0 +1,132 @@
+#include "mainwindow.h"
+
+#include "mapitemellipse.h"
+#include "mapitemgeopolygon.h"
+#include "mapitemgeopolyline.h"
+#include "mapitemimage.h"
+#include "mapitempolygon.h"
+#include "mapitemtext.h"
+#include "osm_geocoding.h"
+#include "piqt.h"
+#include "qad_locations.h"
+
+#include <QDateTime>
+#include <QDebug>
+#include <QFileDialog>
+#include <QTimer>
+#include <math.h>
+
+MainWindow::MainWindow(QWidget * parent): EMainWindow(parent), Ui::MainWindow() {
+	setupUi(this);
+	session.setFile(QAD::userPath(QAD::ltConfig, "session_mapviewer"));
+	session.addEntry(this);
+	session.load();
+	/*QVector<QPointF> g        = {QPointF(55.583055, 37.580008), QPointF(55.583055, 37.590008), QPointF(55.593055, 37.580008)};
+	QVector<QPointF> p        = {QPointF(0, 0), QPointF(200, 0), QPointF(0, 100)};
+	MapItemPolygon * pol      = new MapItemPolygon(QPolygonF(p));
+	MapItemGeoPolyline * gpol = new MapItemGeoPolyline(QPolygonF(g));
+	MapItemEllipse * ell      = new MapItemEllipse(QPointF(), 50, 50);
+	MapItemImage * im         = new MapItemImage(QPixmap(":/icons/maps.png"));
+	MapItemText * it          = new MapItemText(QString::fromUtf8("Это Ваня!"));
+	im->setPosition({55.583055, 37.580008});
+	im->setScale(0.2, 0.5);
+	im->setAlignment(Qt::AlignRight | Qt::AlignTop);
+	im->setCursor(Qt::PointingHandCursor);
+	im->setInteracive(true);
+	it->setPosition({55.583055, 37.580008});
+	it->setBrush(QColor(127, 0, 0, 127));
+	it->setPen(QColor(64, 255, 64));
+	it->setFont(QFont("times", 18));
+	it->setCursor(Qt::OpenHandCursor);
+	it->setInteracive(true);
+	pol->setPosition({55.583055, 37.580008});
+	pol->setUnits(MapItemNonGeoGeometryBase::Pixels);
+	gpol->setBrush(QColor(0, 0, 255, 64));
+	gpol->setPen(QPen(QColor(64, 64, 255), 3));
+	ell->setPosition({55.583055, 37.580008});
+	ell->setStartAngle(-20);
+	ell->setEndAngle(20);
+	ell->setEllipse(QPointF(100, 0), 50, 50);
+	ell->setInteracive(true);
+	QTimer t;
+	QObject::connect(&w, &MapView::itemClicked, [](MapItemBase * item) { qDebug() << "click" << item; });
+	QObject::connect(&w, &MapView::itemEntered, [](MapItemBase * item) { qDebug() << "enter" << item; });
+	QObject::connect(&w, &MapView::itemLeaved, [](MapItemBase * item) { qDebug() << "leave" << item; });
+
+	QObject::connect(&t, &QTimer::timeout, [im, it, pol, ell]() {
+		im->rotate(1);
+		it->rotate(-0.1);
+		// pol->rotate(0.2);
+		ell->rotate(-0.2);
+		static double t = 0.;
+		t += 0.025;
+		ell->setScale((sin(t) / 2. + 1.));
+	});
+	t.start(100);
+	map->addItem(im);
+	map->addItem(gpol);
+	map->addItem(pol);
+	map->addItem(it);
+	map->addItem(ell);
+	map->centerTo({55.583055, 37.580008});
+	map->zoomTo(2);
+*/
+}
+
+
+MainWindow::~MainWindow() {
+	session.save();
+	session.clear(true);
+}
+
+
+void MainWindow::changeEvent(QEvent * e) {
+	QMainWindow::changeEvent(e);
+	switch (e->type()) {
+	case QEvent::LanguageChange: retranslateUi(this); break;
+	default: break;
+	}
+}
+
+
+void MainWindow::loadingSession(QPIConfig & conf) {
+	map->setCenter(conf.getValue("center", map->center()).toPointF());
+	map->setZoom(conf.getValue("zoom", map->getZoom()).toDouble());
+}
+
+
+void MainWindow::savingSession(QPIConfig & conf) {
+	conf.setValue("center", map->center());
+	conf.setValue("zoom", map->getZoom());
+}
+
+
+void MainWindow::on_map_mapClicked(QPointF c) {
+	connect(OSMGeocoding::queue(c), &OSMGeocodingResult::ready, [this](OSMGeocodingResult * res) {
+		labelLocation->setText(res->displayName().trimmed());
+	});
+}
+
+
+void MainWindow::on_buttonDownload_clicked() {
+	static QString dir; // = map->cachePath();
+	auto d = QFileDialog::getExistingDirectory(nullptr, tr("Select directory"), dir);
+	if (d.isEmpty()) return;
+	dir       = d;
+	bool ok   = false;
+	int maxzl = map->getMaximumZoomLevel();
+	int curzl = map->getCurrentZoomLevel();
+	int tzl   = QInputDialog::getInt(nullptr,
+								   windowTitle(),
+								   tr("Select maximum zoom level:"),
+								   qMin(maxzl, curzl + 3),
+								   qMin(maxzl, curzl + 1),
+								   maxzl,
+								   1,
+								   &ok);
+	if (!ok) return;
+	auto prevcd = map->cachePath();
+	map->setCachePath(dir);
+	map->downloadCurrentView(tzl);
+	map->setCachePath(prevcd);
+}

utils/mapviewer/mainwindow.h

@@ -0,0 +1,27 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include "emainwindow.h"
+#include "ui_mainwindow.h"
+
+
+class MainWindow
+	: public EMainWindow
+	, private Ui::MainWindow {
+	Q_OBJECT
+
+public:
+	MainWindow(QWidget * parent = 0);
+	~MainWindow();
+
+protected:
+	void changeEvent(QEvent * e) override;
+	void loadingSession(QPIConfig & conf) override;
+	void savingSession(QPIConfig & conf) override;
+
+private slots:
+	void on_map_mapClicked(QPointF c);
+	void on_buttonDownload_clicked();
+};
+
+#endif

utils/mapviewer/mainwindow.ui

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>822</width>
+    <height>654</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Map Viewer</string>
+  </property>
+  <property name="windowIcon">
+   <iconset resource="../../libs/map/qad_map.qrc">
+    <normaloff>:/icons/maps.png</normaloff>:/icons/maps.png</iconset>
+  </property>
+  <widget class="QWidget" name="centralWidget">
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <item>
+     <widget class="MapView" name="map">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QLabel" name="labelLocation">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="text">
+       <string>Click on map</string>
+      </property>
+      <property name="wordWrap">
+       <bool>true</bool>
+      </property>
+     </widget>
+    </item>
+    <item>
+     <widget class="QPushButton" name="buttonDownload">
+      <property name="text">
+       <string>Download current view ...</string>
+      </property>
+      <property name="icon">
+       <iconset resource="../../libs/widgets/qad_widgets.qrc">
+        <normaloff>:/icons/document-save-as.png</normaloff>:/icons/document-save-as.png</iconset>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <customwidgets>
+  <customwidget>
+   <class>MapView</class>
+   <extends>QWidget</extends>
+   <header>mapview.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources>
+  <include location="../../libs/map/qad_map.qrc"/>
+  <include location="../../libs/widgets/qad_widgets.qrc"/>
+ </resources>
+ <connections/>
+</ui>