Repo created

tools/openlr/openlr_match_quality/CMakeLists.txt

@@ -0,0 +1,5 @@
+project(openlr_match_quality)
+
+if (NOT SKIP_QT_GUI)
+  add_subdirectory(openlr_assessment_tool)
+endif()

tools/openlr/openlr_match_quality/openlr_assessment_tool/CMakeLists.txt

@@ -0,0 +1,31 @@
+project(openlr_assessment_tool)
+
+set(SRC
+  main.cpp
+  mainwindow.cpp
+  mainwindow.hpp
+  map_widget.cpp
+  map_widget.hpp
+  points_controller_delegate_base.hpp
+  segment_correspondence.cpp
+  segment_correspondence.hpp
+  traffic_drawer_delegate_base.hpp
+  traffic_mode.cpp
+  traffic_mode.hpp
+  traffic_panel.cpp
+  traffic_panel.hpp
+  trafficmodeinitdlg.cpp
+  trafficmodeinitdlg.h
+  trafficmodeinitdlg.ui
+)
+
+omim_add_executable(${PROJECT_NAME} ${SRC})
+
+set_target_properties(${PROJECT_NAME} PROPERTIES AUTOUIC ON AUTOMOC ON)
+
+target_link_libraries(${PROJECT_NAME}
+  openlr
+  qt_common
+  map
+  gflags::gflags
+)

tools/openlr/openlr_match_quality/openlr_assessment_tool/Info.plist

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<plist>
+  <dict>
+    <key>NSPrincipalClass</key>
+    <string>NSApplication</string>
+
+    <key>NSHighResolutionCapable</key>
+    <string>True</string>
+  </dict>
+</plist>

tools/openlr/openlr_match_quality/openlr_assessment_tool/main.cpp

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+#include "mainwindow.hpp"
+
+#include "qt/qt_common/helpers.hpp"
+
+#include "map/framework.hpp"
+
+#include <gflags/gflags.h>
+
+#include <QtWidgets/QApplication>
+
+namespace
+{
+DEFINE_string(resources_path, "", "Path to resources directory");
+DEFINE_string(data_path, "", "Path to data directory");
+}  // namespace
+
+int main(int argc, char * argv[])
+{
+  gflags::SetUsageMessage("Visualize and check matched routes.");
+  gflags::ParseCommandLineFlags(&argc, &argv, true);
+
+  Platform & platform = GetPlatform();
+  if (!FLAGS_resources_path.empty())
+    platform.SetResourceDir(FLAGS_resources_path);
+  if (!FLAGS_data_path.empty())
+    platform.SetWritableDirForTests(FLAGS_data_path);
+
+  Q_INIT_RESOURCE(resources_common);
+  QApplication app(argc, argv);
+
+  qt::common::SetDefaultSurfaceFormat(app.platformName());
+
+  FrameworkParams params;
+
+  Framework framework(params);
+  openlr::MainWindow mainWindow(framework);
+
+  mainWindow.showMaximized();
+
+  return app.exec();
+}

tools/openlr/openlr_match_quality/openlr_assessment_tool/mainwindow.cpp

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+#include "openlr/openlr_match_quality/openlr_assessment_tool/mainwindow.hpp"
+
+#include "openlr/openlr_match_quality/openlr_assessment_tool/map_widget.hpp"
+#include "openlr/openlr_match_quality/openlr_assessment_tool/points_controller_delegate_base.hpp"
+#include "openlr/openlr_match_quality/openlr_assessment_tool/traffic_drawer_delegate_base.hpp"
+#include "openlr/openlr_match_quality/openlr_assessment_tool/traffic_panel.hpp"
+#include "openlr/openlr_match_quality/openlr_assessment_tool/trafficmodeinitdlg.h"
+
+#include "map/framework.hpp"
+
+#include "drape_frontend/drape_api.hpp"
+
+#include "routing/data_source.hpp"
+#include "routing/features_road_graph.hpp"
+#include "routing/road_graph.hpp"
+
+#include "routing_common/car_model.hpp"
+
+#include "storage/country_parent_getter.hpp"
+
+#include "geometry/mercator.hpp"
+#include "geometry/point2d.hpp"
+
+#include <QApplication>
+#include <QClipboard>
+#include <QDockWidget>
+#include <QFileDialog>
+#include <QHBoxLayout>
+#include <QKeySequence>
+#include <QLayout>
+#include <QMenu>
+#include <QMenuBar>
+#include <QMessageBox>
+#include <QStandardPaths>
+
+#include <cerrno>
+#include <cstring>
+#include <memory>
+#include <vector>
+
+namespace openlr
+{
+namespace
+{
+class TrafficDrawerDelegate : public TrafficDrawerDelegateBase
+{
+  static constexpr char const * kEncodedLineId = "encodedPath";
+  static constexpr char const * kDecodedLineId = "decodedPath";
+  static constexpr char const * kGoldenLineId = "goldenPath";
+
+public:
+  explicit TrafficDrawerDelegate(Framework & framework)
+    : m_framework(framework)
+    , m_drapeApi(m_framework.GetDrapeApi())
+    , m_bm(framework.GetBookmarkManager())
+  {}
+
+  void SetViewportCenter(m2::PointD const & center) override { m_framework.SetViewportCenter(center); }
+
+  void DrawDecodedSegments(std::vector<m2::PointD> const & points) override
+  {
+    CHECK(!points.empty(), ("Points must not be empty."));
+
+    LOG(LINFO, ("Decoded segment", points));
+    m_drapeApi.AddLine(
+        kDecodedLineId,
+        df::DrapeApiLineData(points, dp::Color(0, 0, 255, 255)).Width(3.0f).ShowPoints(true /* markPoints */));
+  }
+
+  void DrawEncodedSegment(std::vector<m2::PointD> const & points) override
+  {
+    LOG(LINFO, ("Encoded segment", points));
+    m_drapeApi.AddLine(
+        kEncodedLineId,
+        df::DrapeApiLineData(points, dp::Color(255, 0, 0, 255)).Width(3.0f).ShowPoints(true /* markPoints */));
+  }
+
+  void DrawGoldenPath(std::vector<m2::PointD> const & points) override
+  {
+    m_drapeApi.AddLine(
+        kGoldenLineId,
+        df::DrapeApiLineData(points, dp::Color(255, 127, 36, 255)).Width(4.0f).ShowPoints(true /* markPoints */));
+  }
+
+  void ClearGoldenPath() override { m_drapeApi.RemoveLine(kGoldenLineId); }
+
+  void ClearAllPaths() override { m_drapeApi.Clear(); }
+
+  void VisualizePoints(std::vector<m2::PointD> const & points) override
+  {
+    auto editSession = m_bm.GetEditSession();
+    editSession.SetIsVisible(UserMark::Type::DEBUG_MARK, true);
+    for (auto const & p : points)
+      editSession.CreateUserMark<DebugMarkPoint>(p);
+  }
+
+  void ClearAllVisualizedPoints() override { m_bm.GetEditSession().ClearGroup(UserMark::Type::DEBUG_MARK); }
+
+private:
+  Framework & m_framework;
+  df::DrapeApi & m_drapeApi;
+  BookmarkManager & m_bm;
+};
+
+bool PointsMatch(m2::PointD const & a, m2::PointD const & b)
+{
+  auto constexpr kToleranceDistanceM = 1.0;
+  return mercator::DistanceOnEarth(a, b) < kToleranceDistanceM;
+}
+
+class PointsControllerDelegate : public PointsControllerDelegateBase
+{
+public:
+  explicit PointsControllerDelegate(Framework & framework)
+    : m_framework(framework)
+    , m_dataSource(const_cast<DataSource &>(GetDataSource()), nullptr /* numMwmIDs */)
+    , m_roadGraph(m_dataSource, routing::IRoadGraph::Mode::ObeyOnewayTag,
+                  std::make_unique<routing::CarModelFactory>(storage::CountryParentGetter{}))
+  {}
+
+  std::vector<m2::PointD> GetAllJunctionPointsInViewport() const override
+  {
+    std::vector<m2::PointD> points;
+    auto const & rect = m_framework.GetCurrentViewport();
+    auto const pushPoint = [&points, &rect](m2::PointD const & point)
+    {
+      if (!rect.IsPointInside(point))
+        return;
+      for (auto const & p : points)
+        if (PointsMatch(point, p))
+          return;
+      points.push_back(point);
+    };
+
+    auto const pushFeaturePoints = [&pushPoint](FeatureType & ft)
+    {
+      if (ft.GetGeomType() != feature::GeomType::Line)
+        return;
+
+      /// @todo Transported (railway=rail) are also present here :)
+      auto const roadClass = ftypes::GetHighwayClass(feature::TypesHolder(ft));
+      if (roadClass == ftypes::HighwayClass::Undefined || roadClass == ftypes::HighwayClass::Pedestrian)
+        return;
+      ft.ForEachPoint(pushPoint, scales::GetUpperScale());
+    };
+
+    GetDataSource().ForEachInRect(pushFeaturePoints, rect, scales::GetUpperScale());
+    return points;
+  }
+
+  std::pair<std::vector<FeaturePoint>, m2::PointD> GetCandidatePoints(m2::PointD const & p) const override
+  {
+    auto constexpr kInvalidIndex = std::numeric_limits<size_t>::max();
+
+    std::vector<FeaturePoint> points;
+    m2::PointD pointOnFt;
+    indexer::ForEachFeatureAtPoint(GetDataSource(), [&points, &p, &pointOnFt](FeatureType & ft)
+    {
+      if (ft.GetGeomType() != feature::GeomType::Line)
+        return;
+
+      ft.ParseGeometry(FeatureType::BEST_GEOMETRY);
+
+      auto minDistance = std::numeric_limits<double>::max();
+      auto bestPointIndex = kInvalidIndex;
+      for (size_t i = 0; i < ft.GetPointsCount(); ++i)
+      {
+        auto const & fp = ft.GetPoint(i);
+        auto const distance = mercator::DistanceOnEarth(fp, p);
+        if (PointsMatch(fp, p) && distance < minDistance)
+        {
+          bestPointIndex = i;
+          minDistance = distance;
+        }
+      }
+
+      if (bestPointIndex != kInvalidIndex)
+      {
+        points.emplace_back(ft.GetID(), bestPointIndex);
+        pointOnFt = ft.GetPoint(bestPointIndex);
+      }
+    }, p);
+
+    return std::make_pair(points, pointOnFt);
+  }
+
+  std::vector<m2::PointD> GetReachablePoints(m2::PointD const & p) const override
+  {
+    routing::FeaturesRoadGraph::EdgeListT edges;
+    m_roadGraph.GetOutgoingEdges(geometry::PointWithAltitude(p, geometry::kDefaultAltitudeMeters), edges);
+
+    std::vector<m2::PointD> points;
+    for (auto const & e : edges)
+      points.push_back(e.GetEndJunction().GetPoint());
+    return points;
+  }
+
+  ClickType CheckClick(m2::PointD const & clickPoint, m2::PointD const & lastClickedPoint,
+                       std::vector<m2::PointD> const & reachablePoints) const override
+  {
+    // == Comparison is safe here since |clickPoint| is adjusted by GetFeaturesPointsByPoint
+    // so to be equal the closest feature's one.
+    if (clickPoint == lastClickedPoint)
+      return ClickType::Remove;
+    for (auto const & p : reachablePoints)
+      if (PointsMatch(clickPoint, p))
+        return ClickType::Add;
+    return ClickType::Miss;
+  }
+
+private:
+  DataSource const & GetDataSource() const { return m_framework.GetDataSource(); }
+
+  Framework & m_framework;
+  routing::MwmDataSource m_dataSource;
+  routing::FeaturesRoadGraph m_roadGraph;
+};
+}  // namespace
+
+MainWindow::MainWindow(Framework & framework) : m_framework(framework)
+{
+  m_mapWidget = new MapWidget(m_framework, this /* parent */);
+
+  m_layout = new QHBoxLayout();
+  m_layout->addWidget(m_mapWidget);
+
+  auto * window = new QWidget();
+  window->setLayout(m_layout);
+  window->setGraphicsEffect(nullptr);
+
+  setCentralWidget(window);
+
+  setWindowTitle(tr("Organic Maps"));
+  setWindowIcon(QIcon(":/ui/logo.png"));
+
+  QMenu * fileMenu = new QMenu("File", this);
+  menuBar()->addMenu(fileMenu);
+
+  fileMenu->addAction("Open sample", QKeySequence("Ctrl+O"), this, &MainWindow::OnOpenTrafficSample);
+
+  m_closeTrafficSampleAction =
+      fileMenu->addAction("Close sample", QKeySequence("Ctrl+W"), this, &MainWindow::OnCloseTrafficSample);
+  m_saveTrafficSampleAction =
+      fileMenu->addAction("Save sample", QKeySequence("Ctrl+S"), this, &MainWindow::OnSaveTrafficSample);
+
+  fileMenu->addSeparator();
+
+  m_goldifyMatchedPathAction =
+      fileMenu->addAction("Goldify", QKeySequence("Ctrl+G"), [this] { m_trafficMode->GoldifyMatchedPath(); });
+  m_startEditingAction = fileMenu->addAction("Edit", QKeySequence("Ctrl+E"), [this]
+  {
+    m_trafficMode->StartBuildingPath();
+    m_mapWidget->SetMode(MapWidget::Mode::TrafficMarkup);
+    m_commitPathAction->setEnabled(true /* enabled */);
+    m_cancelPathAction->setEnabled(true /* enabled */);
+  });
+  m_commitPathAction = fileMenu->addAction("Accept path", QKeySequence("Ctrl+A"), [this]
+  {
+    m_trafficMode->CommitPath();
+    m_mapWidget->SetMode(MapWidget::Mode::Normal);
+  });
+  m_cancelPathAction = fileMenu->addAction("Revert path", QKeySequence("Ctrl+R"), [this]
+  {
+    m_trafficMode->RollBackPath();
+    m_mapWidget->SetMode(MapWidget::Mode::Normal);
+  });
+  m_ignorePathAction = fileMenu->addAction("Ignore path", QKeySequence("Ctrl+I"), [this]
+  {
+    m_trafficMode->IgnorePath();
+    m_mapWidget->SetMode(MapWidget::Mode::Normal);
+  });
+
+  m_goldifyMatchedPathAction->setEnabled(false /* enabled */);
+  m_closeTrafficSampleAction->setEnabled(false /* enabled */);
+  m_saveTrafficSampleAction->setEnabled(false /* enabled */);
+  m_startEditingAction->setEnabled(false /* enabled */);
+  m_commitPathAction->setEnabled(false /* enabled */);
+  m_cancelPathAction->setEnabled(false /* enabled */);
+  m_ignorePathAction->setEnabled(false /* enabled */);
+}
+
+void MainWindow::CreateTrafficPanel(std::string const & dataFilePath)
+{
+  m_trafficMode =
+      new TrafficMode(dataFilePath, m_framework.GetDataSource(), std::make_unique<TrafficDrawerDelegate>(m_framework),
+                      std::make_unique<PointsControllerDelegate>(m_framework));
+
+  connect(m_mapWidget, &MapWidget::TrafficMarkupClick, m_trafficMode, &TrafficMode::OnClick);
+  connect(m_trafficMode, &TrafficMode::EditingStopped, this, &MainWindow::OnPathEditingStop);
+  connect(m_trafficMode, &TrafficMode::SegmentSelected,
+          [](int segmentId) { QApplication::clipboard()->setText(QString::number(segmentId)); });
+
+  m_docWidget = new QDockWidget(tr("Routes"), this);
+  addDockWidget(Qt::DockWidgetArea::RightDockWidgetArea, m_docWidget);
+
+  m_docWidget->setWidget(new TrafficPanel(m_trafficMode, m_docWidget));
+
+  m_docWidget->adjustSize();
+  m_docWidget->setMinimumWidth(400);
+  m_docWidget->show();
+}
+
+void MainWindow::DestroyTrafficPanel()
+{
+  removeDockWidget(m_docWidget);
+  delete m_docWidget;
+  m_docWidget = nullptr;
+
+  delete m_trafficMode;
+  m_trafficMode = nullptr;
+
+  m_mapWidget->SetMode(MapWidget::Mode::Normal);
+}
+
+void MainWindow::OnOpenTrafficSample()
+{
+  TrafficModeInitDlg dlg;
+  dlg.exec();
+  if (dlg.result() != QDialog::DialogCode::Accepted)
+    return;
+
+  try
+  {
+    CreateTrafficPanel(dlg.GetDataFilePath());
+  }
+  catch (TrafficModeError const & e)
+  {
+    QMessageBox::critical(this, "Data loading error", QString("Can't load data file."));
+    LOG(LERROR, (e.Msg()));
+    return;
+  }
+
+  m_goldifyMatchedPathAction->setEnabled(true /* enabled */);
+  m_closeTrafficSampleAction->setEnabled(true /* enabled */);
+  m_saveTrafficSampleAction->setEnabled(true /* enabled */);
+  m_startEditingAction->setEnabled(true /* enabled */);
+  m_ignorePathAction->setEnabled(true /* enabled */);
+}
+
+void MainWindow::OnCloseTrafficSample()
+{
+  // TODO(mgsergio):
+  // If not saved, ask a user if he/she wants to save.
+  // OnSaveTrafficSample()
+
+  m_goldifyMatchedPathAction->setEnabled(false /* enabled */);
+  m_saveTrafficSampleAction->setEnabled(false /* enabled */);
+  m_closeTrafficSampleAction->setEnabled(false /* enabled */);
+  m_startEditingAction->setEnabled(false /* enabled */);
+  m_commitPathAction->setEnabled(false /* enabled */);
+  m_cancelPathAction->setEnabled(false /* enabled */);
+  m_ignorePathAction->setEnabled(false /* enabled */);
+
+  DestroyTrafficPanel();
+}
+
+void MainWindow::OnSaveTrafficSample()
+{
+  // TODO(mgsergio): Add default filename.
+  auto const & fileName = QFileDialog::getSaveFileName(this, "Save sample");
+  if (fileName.isEmpty())
+    return;
+
+  if (!m_trafficMode->SaveSampleAs(fileName.toStdString()))
+    QMessageBox::critical(this, "Saving error", QString("Can't save file: ") + strerror(errno));
+}
+
+void MainWindow::OnPathEditingStop()
+{
+  m_commitPathAction->setEnabled(false /* enabled */);
+  m_cancelPathAction->setEnabled(false /* enabled */);
+  m_cancelPathAction->setEnabled(false /* enabled */);
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/mainwindow.hpp

@@ -0,0 +1,62 @@
+#pragma once
+
+#include "openlr/openlr_match_quality/openlr_assessment_tool/traffic_mode.hpp"
+
+#include "base/string_utils.hpp"
+
+#include <string>
+
+#include <QMainWindow>
+
+class Framework;
+class QHBoxLayout;
+
+namespace openlr
+{
+class MapWidget;
+class TrafficMode;
+class WebView;
+}  // namespace openlr
+
+namespace df
+{
+class DrapeApi;
+}
+
+class QDockWidget;
+
+namespace openlr
+{
+class MainWindow : public QMainWindow
+{
+  Q_OBJECT
+
+public:
+  explicit MainWindow(Framework & framework);
+
+private:
+  void CreateTrafficPanel(std::string const & dataFilePath);
+  void DestroyTrafficPanel();
+
+  void OnOpenTrafficSample();
+  void OnCloseTrafficSample();
+  void OnSaveTrafficSample();
+  void OnPathEditingStop();
+
+  Framework & m_framework;
+
+  openlr::TrafficMode * m_trafficMode = nullptr;
+  QDockWidget * m_docWidget = nullptr;
+
+  QAction * m_goldifyMatchedPathAction = nullptr;
+  QAction * m_saveTrafficSampleAction = nullptr;
+  QAction * m_closeTrafficSampleAction = nullptr;
+  QAction * m_startEditingAction = nullptr;
+  QAction * m_commitPathAction = nullptr;
+  QAction * m_cancelPathAction = nullptr;
+  QAction * m_ignorePathAction = nullptr;
+
+  openlr::MapWidget * m_mapWidget = nullptr;
+  QHBoxLayout * m_layout = nullptr;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/map_widget.cpp

@@ -0,0 +1,26 @@
+#include "openlr/openlr_match_quality/openlr_assessment_tool/map_widget.hpp"
+
+#include "qt/qt_common/helpers.hpp"
+
+#include "map/framework.hpp"
+
+#include <QMouseEvent>
+
+namespace openlr
+{
+MapWidget::MapWidget(Framework & framework, QWidget * parent) : Base(framework, false /* screenshotMode */, parent) {}
+
+void MapWidget::mousePressEvent(QMouseEvent * e)
+{
+  Base::mousePressEvent(e);
+
+  if (qt::common::IsRightButton(e))
+    ShowInfoPopup(e, GetDevicePoint(e));
+
+  if (m_mode == Mode::TrafficMarkup)
+  {
+    auto pt = GetDevicePoint(e);
+    emit TrafficMarkupClick(m_framework.PtoG(pt), e->button());
+  }
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/map_widget.hpp

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "qt/qt_common/map_widget.hpp"
+
+namespace
+{
+class PointsController;
+}  // namespace
+
+class Framework;
+
+namespace openlr
+{
+class MapWidget : public qt::common::MapWidget
+{
+  Q_OBJECT
+
+  using Base = qt::common::MapWidget;
+
+public:
+  enum class Mode
+  {
+    Normal,
+    TrafficMarkup
+  };
+
+  MapWidget(Framework & framework, QWidget * parent);
+  ~MapWidget() override = default;
+
+  void SetMode(Mode const mode) { m_mode = mode; }
+
+  QSize sizeHint() const override { return QSize(800, 600); }
+
+signals:
+  void TrafficMarkupClick(m2::PointD const & p, Qt::MouseButton const b);
+
+protected:
+  void mousePressEvent(QMouseEvent * e) override;
+
+private:
+  Mode m_mode = Mode::Normal;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/points_controller_delegate_base.hpp

@@ -0,0 +1,38 @@
+#pragma once
+
+#include "indexer/feature.hpp"
+
+#include "geometry/point2d.hpp"
+
+#include <cstddef>
+#include <vector>
+
+namespace openlr
+{
+using FeaturePoint = std::pair<FeatureID, size_t>;
+
+/// This class is responsible for collecting junction points and
+/// checking user's clicks.
+class PointsControllerDelegateBase
+{
+public:
+  enum class ClickType
+  {
+    Miss,
+    Add,
+    Remove
+  };
+
+  virtual ~PointsControllerDelegateBase() = default;
+
+  virtual std::vector<m2::PointD> GetAllJunctionPointsInViewport() const = 0;
+  /// Returns all junction points at a given location in the form of feature id and
+  /// point index in the feature.
+  virtual std::pair<std::vector<FeaturePoint>, m2::PointD> GetCandidatePoints(m2::PointD const & p) const = 0;
+  // Returns all points that are one step reachable from |p|.
+  virtual std::vector<m2::PointD> GetReachablePoints(m2::PointD const & p) const = 0;
+
+  virtual ClickType CheckClick(m2::PointD const & clickPoint, m2::PointD const & lastClickedPoint,
+                               std::vector<m2::PointD> const & reachablePoints) const = 0;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/segment_correspondence.cpp

@@ -0,0 +1,50 @@
+#include "openlr/openlr_match_quality/openlr_assessment_tool/segment_correspondence.hpp"
+
+namespace openlr
+{
+SegmentCorrespondence::SegmentCorrespondence(SegmentCorrespondence const & sc)
+{
+  m_partnerSegment = sc.m_partnerSegment;
+
+  m_positiveOffset = sc.m_positiveOffset;
+  m_negativeOffset = sc.m_negativeOffset;
+
+  m_matchedPath = sc.m_matchedPath;
+  m_fakePath = sc.m_fakePath;
+  m_goldenPath = sc.m_goldenPath;
+
+  m_partnerXMLDoc.reset(sc.m_partnerXMLDoc);
+  m_partnerXMLSegment = m_partnerXMLDoc.child("reportSegments");
+
+  m_status = sc.m_status;
+}
+
+SegmentCorrespondence::SegmentCorrespondence(openlr::LinearSegment const & segment, uint32_t positiveOffset,
+                                             uint32_t negativeOffset, openlr::Path const & matchedPath,
+                                             openlr::Path const & fakePath, openlr::Path const & goldenPath,
+                                             pugi::xml_node const & partnerSegmentXML)
+  : m_partnerSegment(segment)
+  , m_positiveOffset(positiveOffset)
+  , m_negativeOffset(negativeOffset)
+  , m_matchedPath(matchedPath)
+  , m_fakePath(fakePath)
+{
+  SetGoldenPath(goldenPath);
+
+  m_partnerXMLDoc.append_copy(partnerSegmentXML);
+  m_partnerXMLSegment = m_partnerXMLDoc.child("reportSegments");
+  CHECK(m_partnerXMLSegment, ("Node should contain <reportSegments> part"));
+}
+
+void SegmentCorrespondence::SetGoldenPath(openlr::Path const & p)
+{
+  m_goldenPath = p;
+  m_status = p.empty() ? Status::Untouched : Status::Assessed;
+}
+
+void SegmentCorrespondence::Ignore()
+{
+  m_status = Status::Ignored;
+  m_goldenPath.clear();
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/segment_correspondence.hpp

@@ -0,0 +1,68 @@
+#pragma once
+
+#include "openlr/decoded_path.hpp"
+#include "openlr/openlr_model.hpp"
+
+#include <pugixml.hpp>
+
+namespace openlr
+{
+class SegmentCorrespondence
+{
+public:
+  enum class Status
+  {
+    Untouched,
+    Assessed,
+    Ignored
+  };
+
+  SegmentCorrespondence(SegmentCorrespondence const & sc);
+  SegmentCorrespondence(openlr::LinearSegment const & segment, uint32_t positiveOffset, uint32_t negativeOffset,
+                        openlr::Path const & matchedPath, openlr::Path const & fakePath,
+                        openlr::Path const & goldenPath, pugi::xml_node const & partnerSegmentXML);
+
+  openlr::Path const & GetMatchedPath() const { return m_matchedPath; }
+  bool HasMatchedPath() const { return !m_matchedPath.empty(); }
+
+  uint32_t GetPositiveOffset() const { return m_positiveOffset; }
+  uint32_t GetNegativeOffset() const { return m_negativeOffset; }
+
+  openlr::Path const & GetFakePath() const { return m_fakePath; }
+  bool HasFakePath() const { return !m_fakePath.empty(); }
+
+  openlr::Path const & GetGoldenPath() const { return m_goldenPath; }
+  bool HasGoldenPath() const { return !m_goldenPath.empty(); }
+  void SetGoldenPath(openlr::Path const & p);
+
+  openlr::LinearSegment const & GetPartnerSegment() const { return m_partnerSegment; }
+
+  uint32_t GetPartnerSegmentId() const { return m_partnerSegment.m_segmentId; }
+
+  pugi::xml_document const & GetPartnerXML() const { return m_partnerXMLDoc; }
+  pugi::xml_node const & GetPartnerXMLSegment() const { return m_partnerXMLSegment; }
+
+  Status GetStatus() const { return m_status; }
+
+  void Ignore();
+
+private:
+  openlr::LinearSegment m_partnerSegment;
+
+  uint32_t m_positiveOffset = 0;
+  uint32_t m_negativeOffset = 0;
+
+  openlr::Path m_matchedPath;
+  openlr::Path m_fakePath;
+  openlr::Path m_goldenPath;
+
+  // A dirty hack to save back SegmentCorrespondence.
+  // TODO(mgsergio): Consider unifying xml serialization with one used in openlr_stat.
+  pugi::xml_document m_partnerXMLDoc;
+  // This is used by GetPartnerXMLSegment shortcut to return const ref. pugi::xml_node is
+  // just a wrapper so returning by value won't guarantee constness.
+  pugi::xml_node m_partnerXMLSegment;
+
+  Status m_status = Status::Untouched;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/traffic_drawer_delegate_base.hpp

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <geometry/point2d.hpp>
+
+namespace openlr
+{
+/// This class is used to delegate segments drawing to the DrapeEngine.
+class TrafficDrawerDelegateBase
+{
+public:
+  virtual ~TrafficDrawerDelegateBase() = default;
+
+  virtual void SetViewportCenter(m2::PointD const & center) = 0;
+
+  virtual void DrawDecodedSegments(std::vector<m2::PointD> const & points) = 0;
+  virtual void DrawEncodedSegment(std::vector<m2::PointD> const & points) = 0;
+  virtual void DrawGoldenPath(std::vector<m2::PointD> const & points) = 0;
+
+  virtual void ClearGoldenPath() = 0;
+  virtual void ClearAllPaths() = 0;
+
+  virtual void VisualizePoints(std::vector<m2::PointD> const & points) = 0;
+  virtual void ClearAllVisualizedPoints() = 0;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/traffic_mode.cpp

@@ -0,0 +1,548 @@
+#include "traffic_mode.hpp"
+
+#include "openlr/openlr_model_xml.hpp"
+
+#include "indexer/data_source.hpp"
+
+#include "base/assert.hpp"
+#include "base/scope_guard.hpp"
+
+#include <QItemSelection>
+#include <QMessageBox>
+
+namespace openlr
+{
+namespace
+{
+void RemovePointFromPull(m2::PointD const & toBeRemoved, std::vector<m2::PointD> & pool)
+{
+  pool.erase(remove_if(begin(pool), end(pool),
+                       [&toBeRemoved](m2::PointD const & p) { return p.EqualDxDy(toBeRemoved, 1e-6); }),
+             end(pool));
+}
+
+std::vector<m2::PointD> GetReachablePoints(m2::PointD const & srcPoint, std::vector<m2::PointD> const path,
+                                           PointsControllerDelegateBase const & pointsDelegate,
+                                           size_t const lookbackIndex)
+{
+  auto reachablePoints = pointsDelegate.GetReachablePoints(srcPoint);
+  if (lookbackIndex < path.size())
+  {
+    auto const & toBeRemoved = path[path.size() - lookbackIndex - 1];
+    RemovePointFromPull(toBeRemoved, reachablePoints);
+  }
+  return reachablePoints;
+}
+}  // namespace
+
+namespace impl
+{
+// static
+size_t const RoadPointCandidate::kInvalidId = std::numeric_limits<size_t>::max();
+
+/// This class denotes a "non-deterministic" feature point.
+/// I.e. it is a set of all pairs <FeatureID, point index>
+/// located at a specified coordinate.
+/// Only one point at a time is considered active.
+RoadPointCandidate::RoadPointCandidate(std::vector<FeaturePoint> const & points, m2::PointD const & coord)
+  : m_coord(coord)
+  , m_points(points)
+{
+  LOG(LDEBUG, ("Candidate points:", points));
+}
+
+void RoadPointCandidate::ActivateCommonPoint(RoadPointCandidate const & rpc)
+{
+  for (auto const & fp1 : m_points)
+  {
+    for (auto const & fp2 : rpc.m_points)
+    {
+      if (fp1.first == fp2.first)
+      {
+        SetActivePoint(fp1.first);
+        return;
+      }
+    }
+  }
+  CHECK(false, ("One common feature id should exist."));
+}
+
+FeaturePoint const & RoadPointCandidate::GetPoint() const
+{
+  CHECK_NOT_EQUAL(m_activePointIndex, kInvalidId, ("No point is active."));
+  return m_points[m_activePointIndex];
+}
+
+m2::PointD const & RoadPointCandidate::GetCoordinate() const
+{
+  return m_coord;
+}
+
+void RoadPointCandidate::SetActivePoint(FeatureID const & fid)
+{
+  for (size_t i = 0; i < m_points.size(); ++i)
+  {
+    if (m_points[i].first == fid)
+    {
+      m_activePointIndex = i;
+      return;
+    }
+  }
+  CHECK(false, ("One point should match."));
+}
+}  // namespace impl
+
+// TrafficMode -------------------------------------------------------------------------------------
+TrafficMode::TrafficMode(std::string const & dataFileName, DataSource const & dataSource,
+                         std::unique_ptr<TrafficDrawerDelegateBase> drawerDelegate,
+                         std::unique_ptr<PointsControllerDelegateBase> pointsDelegate, QObject * parent)
+  : QAbstractTableModel(parent)
+  , m_dataSource(dataSource)
+  , m_drawerDelegate(std::move(drawerDelegate))
+  , m_pointsDelegate(std::move(pointsDelegate))
+{
+  // TODO(mgsergio): Collect stat how many segments of each kind were parsed.
+  pugi::xml_document doc;
+  if (!doc.load_file(dataFileName.data()))
+    MYTHROW(TrafficModeError, ("Can't load file:", strerror(errno)));
+
+  // Save root node without children.
+  {
+    auto const root = doc.document_element();
+    auto node = m_template.append_child(root.name());
+    for (auto const & attr : root.attributes())
+      node.append_copy(attr);
+  }
+
+  // Select all Segment elements that are direct children of the root.
+  auto const segments = doc.document_element().select_nodes("./Segment");
+
+  try
+  {
+    for (auto const & xpathNode : segments)
+    {
+      auto const xmlSegment = xpathNode.node();
+
+      openlr::Path matchedPath;
+      openlr::Path fakePath;
+      openlr::Path goldenPath;
+
+      openlr::LinearSegment segment;
+
+      // TODO(mgsergio): Unify error handling interface of openlr_xml_mode and decoded_path parsers.
+      auto const partnerSegmentXML = xmlSegment.child("reportSegments");
+      if (!openlr::SegmentFromXML(partnerSegmentXML, segment))
+        MYTHROW(TrafficModeError, ("An error occurred while parsing: can't parse segment"));
+
+      if (auto const route = xmlSegment.child("Route"))
+        openlr::PathFromXML(route, m_dataSource, matchedPath);
+      if (auto const route = xmlSegment.child("FakeRoute"))
+        openlr::PathFromXML(route, m_dataSource, fakePath);
+      if (auto const route = xmlSegment.child("GoldenRoute"))
+        openlr::PathFromXML(route, m_dataSource, goldenPath);
+
+      uint32_t positiveOffsetM = 0;
+      uint32_t negativeOffsetM = 0;
+      if (auto const reportSegmentLRC = partnerSegmentXML.child("ReportSegmentLRC"))
+      {
+        if (auto const method = reportSegmentLRC.child("method"))
+        {
+          if (auto const locationReference = method.child("olr:locationReference"))
+          {
+            if (auto const optionLinearLocationReference = locationReference.child("olr:optionLinearLocationReference"))
+            {
+              if (auto const positiveOffset = optionLinearLocationReference.child("olr:positiveOffset"))
+                positiveOffsetM = UintValueFromXML(positiveOffset);
+
+              if (auto const negativeOffset = optionLinearLocationReference.child("olr:negativeOffset"))
+                negativeOffsetM = UintValueFromXML(negativeOffset);
+            }
+          }
+        }
+      }
+
+      m_segments.emplace_back(segment, positiveOffsetM, negativeOffsetM, matchedPath, fakePath, goldenPath,
+                              partnerSegmentXML);
+      if (auto const status = xmlSegment.child("Ignored"))
+      {
+        if (status.text().as_bool())
+          m_segments.back().Ignore();
+      }
+    }
+  }
+  catch (openlr::DecodedPathLoadError const & e)
+  {
+    MYTHROW(TrafficModeError, ("An exception occurred while parsing", dataFileName, e.Msg()));
+  }
+
+  LOG(LINFO, (segments.size(), "segments are loaded."));
+}
+
+// TODO(mgsergio): Check if a path was committed, or commit it.
+bool TrafficMode::SaveSampleAs(std::string const & fileName) const
+{
+  CHECK(!fileName.empty(), ("Can't save to an empty file."));
+
+  pugi::xml_document result;
+  result.reset(m_template);
+  auto root = result.document_element();
+
+  for (auto const & sc : m_segments)
+  {
+    auto segment = root.append_child("Segment");
+    segment.append_copy(sc.GetPartnerXMLSegment());
+
+    if (sc.GetStatus() == SegmentCorrespondence::Status::Ignored)
+      segment.append_child("Ignored").text() = true;
+    if (sc.HasMatchedPath())
+    {
+      auto node = segment.append_child("Route");
+      openlr::PathToXML(sc.GetMatchedPath(), node);
+    }
+    if (sc.HasFakePath())
+    {
+      auto node = segment.append_child("FakeRoute");
+      openlr::PathToXML(sc.GetFakePath(), node);
+    }
+    if (sc.HasGoldenPath())
+    {
+      auto node = segment.append_child("GoldenRoute");
+      openlr::PathToXML(sc.GetGoldenPath(), node);
+    }
+  }
+
+  result.save_file(fileName.data(), "  " /* indent */);
+  return true;
+}
+
+int TrafficMode::rowCount(QModelIndex const & parent) const
+{
+  return static_cast<int>(m_segments.size());
+}
+
+int TrafficMode::columnCount(QModelIndex const & parent) const
+{
+  return 4;
+}
+
+QVariant TrafficMode::data(QModelIndex const & index, int role) const
+{
+  if (!index.isValid())
+    return QVariant();
+
+  if (index.row() >= rowCount())
+    return QVariant();
+
+  if (role != Qt::DisplayRole && role != Qt::EditRole)
+    return QVariant();
+
+  if (index.column() == 0)
+    return m_segments[index.row()].GetPartnerSegmentId();
+
+  if (index.column() == 1)
+    return static_cast<int>(m_segments[index.row()].GetStatus());
+
+  if (index.column() == 2)
+    return m_segments[index.row()].GetPositiveOffset();
+
+  if (index.column() == 3)
+    return m_segments[index.row()].GetNegativeOffset();
+
+  return QVariant();
+}
+
+QVariant TrafficMode::headerData(int section, Qt::Orientation orientation, int role /* = Qt::DisplayRole */) const
+{
+  if (orientation != Qt::Horizontal && role != Qt::DisplayRole)
+    return QVariant();
+
+  switch (section)
+  {
+  case 0: return "Segment id"; break;
+  case 1: return "Status code"; break;
+  case 2: return "Positive offset (Meters)"; break;
+  case 3: return "Negative offset (Meters)"; break;
+  }
+  UNREACHABLE();
+}
+
+void TrafficMode::OnItemSelected(QItemSelection const & selected, QItemSelection const &)
+{
+  ASSERT(!selected.empty(), ());
+  ASSERT(!m_segments.empty(), ());
+
+  auto const row = selected.front().top();
+
+  CHECK_LESS(static_cast<size_t>(row), m_segments.size(), ());
+  m_currentSegment = &m_segments[row];
+
+  auto const & partnerSegment = m_currentSegment->GetPartnerSegment();
+  auto const & partnerSegmentPoints = partnerSegment.GetMercatorPoints();
+  auto const & viewportCenter = partnerSegmentPoints.front();
+
+  m_drawerDelegate->ClearAllPaths();
+  // TODO(mgsergio): Use a better way to set viewport and scale.
+  m_drawerDelegate->SetViewportCenter(viewportCenter);
+  m_drawerDelegate->DrawEncodedSegment(partnerSegmentPoints);
+  if (m_currentSegment->HasMatchedPath())
+    m_drawerDelegate->DrawDecodedSegments(GetPoints(m_currentSegment->GetMatchedPath()));
+  if (m_currentSegment->HasGoldenPath())
+    m_drawerDelegate->DrawGoldenPath(GetPoints(m_currentSegment->GetGoldenPath()));
+
+  emit SegmentSelected(static_cast<int>(partnerSegment.m_segmentId));
+}
+
+Qt::ItemFlags TrafficMode::flags(QModelIndex const & index) const
+{
+  if (!index.isValid())
+    return Qt::ItemIsEnabled;
+
+  return QAbstractItemModel::flags(index);
+}
+
+void TrafficMode::GoldifyMatchedPath()
+{
+  if (!m_currentSegment->HasMatchedPath())
+  {
+    QMessageBox::information(nullptr /* parent */, "Error", "The selected segment does not have a matched path");
+    return;
+  }
+
+  if (!StartBuildingPathChecks())
+    return;
+
+  m_currentSegment->SetGoldenPath(m_currentSegment->GetMatchedPath());
+  m_goldenPath.clear();
+  m_drawerDelegate->DrawGoldenPath(GetPoints(m_currentSegment->GetGoldenPath()));
+}
+
+void TrafficMode::StartBuildingPath()
+{
+  if (!StartBuildingPathChecks())
+    return;
+
+  m_currentSegment->SetGoldenPath({});
+
+  m_buildingPath = true;
+  m_drawerDelegate->ClearGoldenPath();
+  m_drawerDelegate->VisualizePoints(m_pointsDelegate->GetAllJunctionPointsInViewport());
+}
+
+void TrafficMode::PushPoint(m2::PointD const & coord, std::vector<FeaturePoint> const & points)
+{
+  impl::RoadPointCandidate point(points, coord);
+  if (!m_goldenPath.empty())
+    m_goldenPath.back().ActivateCommonPoint(point);
+  m_goldenPath.push_back(point);
+}
+
+void TrafficMode::PopPoint()
+{
+  CHECK(!m_goldenPath.empty(), ("Attempt to pop point from an empty path."));
+  m_goldenPath.pop_back();
+}
+
+void TrafficMode::CommitPath()
+{
+  CHECK(m_currentSegment, ("No segments selected"));
+
+  if (!m_buildingPath)
+    MYTHROW(TrafficModeError, ("Path building is not started"));
+
+  SCOPE_GUARD(guard, [this] { emit EditingStopped(); });
+
+  m_buildingPath = false;
+  m_drawerDelegate->ClearAllVisualizedPoints();
+
+  if (m_goldenPath.size() == 1)
+  {
+    LOG(LDEBUG, ("Golden path is empty"));
+    return;
+  }
+
+  CHECK_GREATER(m_goldenPath.size(), 1, ("Path cannot consist of only one point"));
+
+  // Activate last point. Since no more points will be availabe we link it to the same
+  // feature as the previous one was linked to.
+  m_goldenPath.back().ActivateCommonPoint(m_goldenPath[GetPointsCount() - 2]);
+
+  openlr::Path path;
+  for (size_t i = 1; i < GetPointsCount(); ++i)
+  {
+    auto const prevPoint = m_goldenPath[i - 1];
+    auto point = m_goldenPath[i];
+
+    // The start and the end of the edge should lie on the same feature.
+    point.ActivateCommonPoint(prevPoint);
+
+    auto const & prevFt = prevPoint.GetPoint();
+    auto const & ft = point.GetPoint();
+
+    path.push_back(Edge::MakeReal(ft.first, prevFt.second < ft.second /* forward */,
+                                  base::checked_cast<uint32_t>(prevFt.second),
+                                  geometry::PointWithAltitude(prevPoint.GetCoordinate(), 0 /* altitude */),
+                                  geometry::PointWithAltitude(point.GetCoordinate(), 0 /* altitude */)));
+  }
+
+  m_currentSegment->SetGoldenPath(path);
+  m_goldenPath.clear();
+}
+
+void TrafficMode::RollBackPath()
+{
+  CHECK(m_currentSegment, ("No segments selected"));
+  CHECK(m_buildingPath, ("No path building is in progress."));
+
+  m_buildingPath = false;
+
+  // TODO(mgsergio): Add a method for common visual manipulations.
+  m_drawerDelegate->ClearAllVisualizedPoints();
+  m_drawerDelegate->ClearGoldenPath();
+  if (m_currentSegment->HasGoldenPath())
+    m_drawerDelegate->DrawGoldenPath(GetPoints(m_currentSegment->GetGoldenPath()));
+
+  m_goldenPath.clear();
+  emit EditingStopped();
+}
+
+void TrafficMode::IgnorePath()
+{
+  CHECK(m_currentSegment, ("No segments selected"));
+
+  if (m_currentSegment->HasGoldenPath())
+  {
+    auto const btn = QMessageBox::question(nullptr /* parent */, "Override warning",
+                                           "The selected segment has a golden path. Do you want to discard it?");
+    if (btn == QMessageBox::No)
+      return;
+  }
+
+  m_buildingPath = false;
+
+  // TODO(mgsergio): Add a method for common visual manipulations.
+  m_drawerDelegate->ClearAllVisualizedPoints();
+  m_drawerDelegate->ClearGoldenPath();
+
+  m_currentSegment->Ignore();
+  m_goldenPath.clear();
+  emit EditingStopped();
+}
+
+size_t TrafficMode::GetPointsCount() const
+{
+  return m_goldenPath.size();
+}
+
+m2::PointD const & TrafficMode::GetPoint(size_t const index) const
+{
+  return m_goldenPath[index].GetCoordinate();
+}
+
+m2::PointD const & TrafficMode::GetLastPoint() const
+{
+  CHECK(!m_goldenPath.empty(), ("Attempt to get point from an empty path."));
+  return m_goldenPath.back().GetCoordinate();
+}
+
+std::vector<m2::PointD> TrafficMode::GetGoldenPathPoints() const
+{
+  std::vector<m2::PointD> coordinates;
+  for (auto const & roadPoint : m_goldenPath)
+    coordinates.push_back(roadPoint.GetCoordinate());
+  return coordinates;
+}
+
+// TODO(mgsergio): Draw the first point when the path size is 1.
+void TrafficMode::HandlePoint(m2::PointD clickPoint, Qt::MouseButton const button)
+{
+  if (!m_buildingPath)
+    return;
+
+  auto const currentPathLength = GetPointsCount();
+  auto const lastClickedPoint = currentPathLength != 0 ? GetLastPoint() : m2::PointD::Zero();
+
+  auto const & p = m_pointsDelegate->GetCandidatePoints(clickPoint);
+  auto const & candidatePoints = p.first;
+  clickPoint = p.second;
+  if (candidatePoints.empty())
+    return;
+
+  auto reachablePoints =
+      GetReachablePoints(clickPoint, GetGoldenPathPoints(), *m_pointsDelegate, 0 /* lookBackIndex */);
+  auto const & clickablePoints =
+      currentPathLength != 0
+          ? GetReachablePoints(lastClickedPoint, GetGoldenPathPoints(), *m_pointsDelegate, 1 /* lookbackIndex */)
+          // TODO(mgsergio): This is not quite correct since view port can change
+          // since first call to visualize points. But it's ok in general.
+          : m_pointsDelegate->GetAllJunctionPointsInViewport();
+
+  using ClickType = PointsControllerDelegateBase::ClickType;
+  switch (m_pointsDelegate->CheckClick(clickPoint, lastClickedPoint, clickablePoints))
+  {
+  case ClickType::Add:
+    // TODO(mgsergio): Think of refactoring this with if (accumulator.empty)
+    // instead of pushing point first ad then removing last selection.
+    PushPoint(clickPoint, candidatePoints);
+
+    if (currentPathLength > 0)
+    {
+      // TODO(mgsergio): Should I remove lastClickedPoint from clickablePoints
+      // as well?
+      RemovePointFromPull(lastClickedPoint, reachablePoints);
+      m_drawerDelegate->DrawGoldenPath(GetGoldenPathPoints());
+    }
+
+    m_drawerDelegate->ClearAllVisualizedPoints();
+    m_drawerDelegate->VisualizePoints(reachablePoints);
+    m_drawerDelegate->VisualizePoints({clickPoint});
+    break;
+  case ClickType::Remove:                       // TODO(mgsergio): Rename this case.
+    if (button == Qt::MouseButton::LeftButton)  // RemovePoint
+    {
+      m_drawerDelegate->ClearAllVisualizedPoints();
+      m_drawerDelegate->ClearGoldenPath();
+
+      PopPoint();
+      if (m_goldenPath.empty())
+      {
+        m_drawerDelegate->VisualizePoints(m_pointsDelegate->GetAllJunctionPointsInViewport());
+      }
+      else
+      {
+        m_drawerDelegate->VisualizePoints(
+            GetReachablePoints(GetLastPoint(), GetGoldenPathPoints(), *m_pointsDelegate, 1 /* lookBackIndex */));
+      }
+
+      if (GetPointsCount() > 1)
+        m_drawerDelegate->DrawGoldenPath(GetGoldenPathPoints());
+    }
+    else if (button == Qt::MouseButton::RightButton)
+    {
+      CommitPath();
+    }
+    break;
+  case ClickType::Miss:
+    // TODO(mgsergio): This situation should be handled by checking candidatePoitns.empty() above.
+    // Not shure though if all cases are handled by that check.
+    return;
+  }
+}
+
+bool TrafficMode::StartBuildingPathChecks() const
+{
+  CHECK(m_currentSegment, ("A segment should be selected before path building is started."));
+
+  if (m_buildingPath)
+    MYTHROW(TrafficModeError, ("Path building already in progress."));
+
+  if (m_currentSegment->HasGoldenPath())
+  {
+    auto const btn = QMessageBox::question(nullptr /* parent */, "Override warning",
+                                           "The selected segment already has a golden path. Do you want to override?");
+    if (btn == QMessageBox::No)
+      return false;
+  }
+
+  return true;
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/traffic_mode.hpp

@@ -0,0 +1,117 @@
+#pragma once
+
+#include "points_controller_delegate_base.hpp"
+#include "segment_correspondence.hpp"
+#include "traffic_drawer_delegate_base.hpp"
+
+#include "openlr/decoded_path.hpp"
+
+#include "indexer/data_source.hpp"
+
+#include "base/exception.hpp"
+
+#include <pugixml.hpp>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <QAbstractTableModel>
+
+class QItemSelection;
+class Selection;
+
+DECLARE_EXCEPTION(TrafficModeError, RootException);
+
+namespace openlr
+{
+namespace impl
+{
+/// This class denotes a "non-deterministic" feature point.
+/// I.e. it is a set of all pairs <FeatureID, point index>
+/// located at a specified coordinate.
+/// Only one point at a time is considered active.
+class RoadPointCandidate
+{
+public:
+  RoadPointCandidate(std::vector<openlr::FeaturePoint> const & points, m2::PointD const & coord);
+
+  void ActivateCommonPoint(RoadPointCandidate const & rpc);
+  openlr::FeaturePoint const & GetPoint() const;
+  m2::PointD const & GetCoordinate() const;
+
+private:
+  static size_t const kInvalidId;
+
+  void SetActivePoint(FeatureID const & fid);
+
+  m2::PointD m_coord = m2::PointD::Zero();
+  std::vector<openlr::FeaturePoint> m_points;
+
+  size_t m_activePointIndex = kInvalidId;
+};
+}  // namespace impl
+
+/// This class is used to map sample ids to real data
+/// and change sample evaluations.
+class TrafficMode : public QAbstractTableModel
+{
+  Q_OBJECT
+
+public:
+  // TODO(mgsergio): Check we are on the right mwm. I.e. right mwm version and everything.
+  TrafficMode(std::string const & dataFileName, DataSource const & dataSource,
+              std::unique_ptr<TrafficDrawerDelegateBase> drawerDelegate,
+              std::unique_ptr<PointsControllerDelegateBase> pointsDelegate, QObject * parent = Q_NULLPTR);
+
+  bool SaveSampleAs(std::string const & fileName) const;
+
+  int rowCount(QModelIndex const & parent = QModelIndex()) const Q_DECL_OVERRIDE;
+  int columnCount(QModelIndex const & parent = QModelIndex()) const Q_DECL_OVERRIDE;
+  QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const Q_DECL_OVERRIDE;
+
+  QVariant data(QModelIndex const & index, int role) const Q_DECL_OVERRIDE;
+
+  Qt::ItemFlags flags(QModelIndex const & index) const Q_DECL_OVERRIDE;
+
+  bool IsBuildingPath() const { return m_buildingPath; }
+  void GoldifyMatchedPath();
+  void StartBuildingPath();
+  void PushPoint(m2::PointD const & coord, std::vector<FeaturePoint> const & points);
+  void PopPoint();
+  void CommitPath();
+  void RollBackPath();
+  void IgnorePath();
+
+  size_t GetPointsCount() const;
+  m2::PointD const & GetPoint(size_t const index) const;
+  m2::PointD const & GetLastPoint() const;
+  std::vector<m2::PointD> GetGoldenPathPoints() const;
+
+public slots:
+  void OnItemSelected(QItemSelection const & selected, QItemSelection const &);
+  void OnClick(m2::PointD const & clickPoint, Qt::MouseButton const button) { HandlePoint(clickPoint, button); }
+
+signals:
+  void EditingStopped();
+  void SegmentSelected(int segmentId);
+
+private:
+  void HandlePoint(m2::PointD clickPoint, Qt::MouseButton const button);
+  bool StartBuildingPathChecks() const;
+
+  DataSource const & m_dataSource;
+  std::vector<SegmentCorrespondence> m_segments;
+  // Non-owning pointer to an element of m_segments.
+  SegmentCorrespondence * m_currentSegment = nullptr;
+
+  std::unique_ptr<TrafficDrawerDelegateBase> m_drawerDelegate;
+  std::unique_ptr<PointsControllerDelegateBase> m_pointsDelegate;
+
+  bool m_buildingPath = false;
+  std::vector<impl::RoadPointCandidate> m_goldenPath;
+
+  // Clone this document and add things to its clone when saving sample.
+  pugi::xml_document m_template;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/traffic_panel.cpp

@@ -0,0 +1,76 @@
+#include "openlr/openlr_match_quality/openlr_assessment_tool/traffic_panel.hpp"
+#include "openlr/openlr_match_quality/openlr_assessment_tool/traffic_mode.hpp"
+
+#include <QtCore/QAbstractTableModel>
+#include <QtWidgets/QBoxLayout>
+#include <QtWidgets/QComboBox>
+#include <QtWidgets/QHeaderView>
+#include <QtWidgets/QStyledItemDelegate>
+#include <QtWidgets/QTableView>
+
+namespace openlr
+{
+// ComboBoxDelegate --------------------------------------------------------------------------------
+ComboBoxDelegate::ComboBoxDelegate(QObject * parent) : QStyledItemDelegate(parent) {}
+
+QWidget * ComboBoxDelegate::createEditor(QWidget * parent, QStyleOptionViewItem const & option,
+                                         QModelIndex const & index) const
+{
+  auto * editor = new QComboBox(parent);
+  editor->setFrame(false);
+  editor->setEditable(false);
+  editor->addItems({"Unevaluated", "Positive", "Negative", "RelPositive", "RelNegative", "Ignore"});
+
+  return editor;
+}
+
+void ComboBoxDelegate::setEditorData(QWidget * editor, QModelIndex const & index) const
+{
+  auto const value = index.model()->data(index, Qt::EditRole).toString();
+  static_cast<QComboBox *>(editor)->setCurrentText(value);
+}
+
+void ComboBoxDelegate::setModelData(QWidget * editor, QAbstractItemModel * model, QModelIndex const & index) const
+{
+  model->setData(index, static_cast<QComboBox *>(editor)->currentText(), Qt::EditRole);
+}
+
+void ComboBoxDelegate::updateEditorGeometry(QWidget * editor, QStyleOptionViewItem const & option,
+                                            QModelIndex const & index) const
+{
+  editor->setGeometry(option.rect);
+}
+
+// TrafficPanel ------------------------------------------------------------------------------------
+TrafficPanel::TrafficPanel(QAbstractItemModel * trafficModel, QWidget * parent) : QWidget(parent)
+{
+  CreateTable(trafficModel);
+
+  auto * layout = new QVBoxLayout();
+  layout->addWidget(m_table);
+  setLayout(layout);
+
+  // Select first segment by default;
+  auto const & index = m_table->model()->index(0, 0);
+  m_table->selectionModel()->select(index, QItemSelectionModel::Select);
+}
+
+void TrafficPanel::CreateTable(QAbstractItemModel * trafficModel)
+{
+  m_table = new QTableView();
+  m_table->setFocusPolicy(Qt::NoFocus);
+  m_table->setAlternatingRowColors(true);
+  m_table->setShowGrid(false);
+  m_table->setSelectionBehavior(QAbstractItemView::SelectionBehavior::SelectRows);
+  m_table->setSelectionMode(QAbstractItemView::SelectionMode::SingleSelection);
+  m_table->verticalHeader()->setVisible(false);
+  m_table->horizontalHeader()->setVisible(true);
+  m_table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
+
+  m_table->setModel(trafficModel);
+  m_table->setItemDelegate(new ComboBoxDelegate());
+
+  connect(m_table->selectionModel(), SIGNAL(selectionChanged(QItemSelection const &, QItemSelection const &)),
+          trafficModel, SLOT(OnItemSelected(QItemSelection const &, QItemSelection const &)));
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/traffic_panel.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <QtWidgets/QStyledItemDelegate>
+
+class QAbstractItemModel;
+class QComboBox;
+class QTableView;
+class QWidget;
+
+namespace openlr
+{
+class ComboBoxDelegate : public QStyledItemDelegate
+{
+  Q_OBJECT
+
+public:
+  ComboBoxDelegate(QObject * parent = 0);
+
+  QWidget * createEditor(QWidget * parent, QStyleOptionViewItem const & option,
+                         QModelIndex const & index) const Q_DECL_OVERRIDE;
+
+  void setEditorData(QWidget * editor, QModelIndex const & index) const Q_DECL_OVERRIDE;
+
+  void setModelData(QWidget * editor, QAbstractItemModel * model, QModelIndex const & index) const Q_DECL_OVERRIDE;
+
+  void updateEditorGeometry(QWidget * editor, QStyleOptionViewItem const & option,
+                            QModelIndex const & index) const Q_DECL_OVERRIDE;
+};
+
+class TrafficPanel : public QWidget
+{
+  Q_OBJECT
+
+public:
+  explicit TrafficPanel(QAbstractItemModel * trafficModel, QWidget * parent);
+
+private:
+  void CreateTable(QAbstractItemModel * trafficModel);
+  void FillTable();
+
+signals:
+
+public slots:
+  // void OnCheckBoxClicked(int row, int state);
+
+private:
+  QTableView * m_table = Q_NULLPTR;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/trafficmodeinitdlg.cpp

@@ -0,0 +1,50 @@
+#include "openlr/openlr_match_quality/openlr_assessment_tool/trafficmodeinitdlg.h"
+#include "ui_trafficmodeinitdlg.h"
+
+#include "platform/settings.hpp"
+
+#include <QtWidgets/QFileDialog>
+
+#include <string>
+
+namespace
+{
+std::string const kDataFilePath = "LastOpenlrAssessmentDataFilePath";
+}  // namespace
+
+namespace openlr
+{
+TrafficModeInitDlg::TrafficModeInitDlg(QWidget * parent) : QDialog(parent), m_ui(new Ui::TrafficModeInitDlg)
+{
+  m_ui->setupUi(this);
+
+  std::string lastDataFilePath;
+  if (settings::Get(kDataFilePath, lastDataFilePath))
+    m_ui->dataFileName->setText(QString::fromStdString(lastDataFilePath));
+
+  connect(m_ui->chooseDataFileButton, &QPushButton::clicked,
+          [this](bool) { SetFilePathViaDialog(*m_ui->dataFileName, tr("Choose data file"), "*.xml"); });
+}
+
+TrafficModeInitDlg::~TrafficModeInitDlg()
+{
+  delete m_ui;
+}
+
+void TrafficModeInitDlg::accept()
+{
+  m_dataFileName = m_ui->dataFileName->text().trimmed().toStdString();
+  settings::Set(kDataFilePath, m_dataFileName);
+  QDialog::accept();
+}
+
+void TrafficModeInitDlg::SetFilePathViaDialog(QLineEdit & dest, QString const & title, QString const & filter)
+{
+  QFileDialog openFileDlg(nullptr, title, {} /* directory */, filter);
+  openFileDlg.exec();
+  if (openFileDlg.result() != QDialog::DialogCode::Accepted)
+    return;
+
+  dest.setText(openFileDlg.selectedFiles().first());
+}
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/trafficmodeinitdlg.h

@@ -0,0 +1,36 @@
+#pragma once
+
+#include <string>
+
+#include <QtWidgets/QDialog>
+
+class QLineEdit;
+
+namespace Ui {
+class TrafficModeInitDlg;
+}
+
+namespace openlr
+{
+class TrafficModeInitDlg : public QDialog
+{
+  Q_OBJECT
+
+public:
+  explicit TrafficModeInitDlg(QWidget * parent = nullptr);
+  ~TrafficModeInitDlg();
+
+  std::string GetDataFilePath() const { return m_dataFileName; }
+
+private:
+  void SetFilePathViaDialog(QLineEdit & dest, QString const & title,
+                            QString const & filter = {});
+public slots:
+  void accept() override;
+
+private:
+  Ui::TrafficModeInitDlg * m_ui;
+
+  std::string m_dataFileName;
+};
+}  // namespace openlr

tools/openlr/openlr_match_quality/openlr_assessment_tool/trafficmodeinitdlg.ui

@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>TrafficModeInitDlg</class>
+ <widget class="QDialog" name="TrafficModeInitDlg">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>482</width>
+    <height>122</height>
+   </rect>
+  </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="windowTitle">
+   <string>Select traffic files</string>
+  </property>
+  <property name="modal">
+   <bool>true</bool>
+  </property>
+  <widget class="QWidget" name="gridLayoutWidget">
+   <property name="geometry">
+    <rect>
+     <x>20</x>
+     <y>10</y>
+     <width>441</width>
+     <height>101</height>
+    </rect>
+   </property>
+   <layout class="QGridLayout" name="gridLayout">
+    <item row="1" column="2">
+     <widget class="QPushButton" name="cancelButton">
+      <property name="text">
+       <string>Cancel</string>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="3">
+     <widget class="QPushButton" name="chooseDataFileButton">
+      <property name="text">
+       <string>Choose...</string>
+      </property>
+     </widget>
+    </item>
+    <item row="1" column="3">
+     <widget class="QPushButton" name="okButton">
+      <property name="text">
+       <string>Ok</string>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="1" colspan="2">
+     <widget class="QLineEdit" name="dataFileName"/>
+    </item>
+    <item row="0" column="0">
+     <widget class="QLabel" name="dataLabel">
+      <property name="mouseTracking">
+       <bool>true</bool>
+      </property>
+      <property name="text">
+       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Data file:&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <tabstops>
+  <tabstop>dataFileName</tabstop>
+  <tabstop>chooseDataFileButton</tabstop>
+ </tabstops>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>cancelButton</sender>
+   <signal>clicked()</signal>
+   <receiver>TrafficModeInitDlg</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>290</x>
+     <y>103</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>164</x>
+     <y>98</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>okButton</sender>
+   <signal>clicked()</signal>
+   <receiver>TrafficModeInitDlg</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>405</x>
+     <y>105</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>59</x>
+     <y>94</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>