Show grid

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// [WriteFile Name=ShowGrid, Category=DisplayInformation]
// [Legal]
// Copyright 2024 Esri.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

#include "ShowGrid.h"

#include "ArcGISTiledElevationSource.h"
#include "ElevationSourceListModel.h"
#include "LatitudeLongitudeGrid.h"
#include "Map.h"
#include "MapTypes.h"
#include "MapQuickView.h"
#include "MapViewTypes.h"
#include "MGRSGrid.h"
#include "Point.h"
#include "Scene.h"
#include "SceneQuickView.h"
#include "SimpleLineSymbol.h"
#include "SpatialReference.h"
#include "Surface.h"
#include "TextSymbol.h"
#include "USNGGrid.h"
#include "UTMGrid.h"
#include "Viewpoint.h"

#include <QFuture>

using namespace Esri::ArcGISRuntime;

ShowGrid::ShowGrid(QObject* parent /* = nullptr */):
  QObject(parent),
  m_map(new Map(BasemapStyle::ArcGISImagery, this)),
  m_scene(new Scene(BasemapStyle::ArcGISImagery, this))
{
  // create a new elevation source from Terrain3D REST service
  ArcGISTiledElevationSource* elevationSource = new ArcGISTiledElevationSource(
        QUrl("https://elevation3d.arcgis.com/arcgis/rest/services/WorldElevation3D/Terrain3D/ImageServer"), this);

  // add the elevation source to the scene to display elevation
  m_scene->baseSurface()->elevationSources()->append(elevationSource);

  // Set the sample's initial GeoView type to MapView
  m_currentViewType = s_mapView;

  // Set the initial viewpoint of the map
  constexpr double targetScale = 6450785;
  m_map->setInitialViewpoint(Viewpoint(Point(-10336141.70018318, 5418213.05332071, SpatialReference::webMercator()), targetScale));

  // Set the intial grid to LatitudeLongitudeGrid
  m_grid = new LatitudeLongitudeGrid(this);
}

ShowGrid::~ShowGrid() = default;

void ShowGrid::init()
{
  // Register classes for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<SceneQuickView>("Esri.Samples", 1, 0, "SceneView");
  qmlRegisterType<ShowGrid>("Esri.Samples", 1, 0, "ShowGridSample");
}

MapQuickView* ShowGrid::mapView() const
{
  return m_mapView;
}

// Set the view (created in QML)
void ShowGrid::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

  m_mapView = mapView;
  m_mapView->setMap(m_map);

  m_mapView->setGrid(m_grid);

  emit mapViewChanged();
}

SceneQuickView* ShowGrid::sceneView() const
{
  return m_sceneView;
}

// Set the view (created in QML)
void ShowGrid::setSceneView(SceneQuickView* sceneView)
{
  if (!sceneView || sceneView == m_sceneView)
    return;

  m_sceneView = sceneView;
  m_sceneView->setArcGISScene(m_scene);

  // Set the SceneView initially to be invisible
  m_sceneView->setVisible(false);

  emit sceneViewChanged();
}


void ShowGrid::setViewType(const QString& viewType)
{
  if (m_currentViewType == viewType)
    return;

  m_currentViewType = viewType;

  // MapView and SceneView share the same inherited class GeoView
  GeoView* newGeoView = viewType == s_mapView ? dynamic_cast<GeoView*>(m_mapView) : dynamic_cast<GeoView*>(m_sceneView);
  GeoView* oldGeoView = viewType != s_mapView ? dynamic_cast<GeoView*>(m_mapView) : dynamic_cast<GeoView*>(m_sceneView);

  // Set the viewpoint of the new view to the current viewpoint of the old view
  newGeoView->setViewpointAsync(oldGeoView->currentViewpoint(ViewpointType::BoundingGeometry), 0);

  // The Grid cannot be shared between a MapView and a SceneView so we need to unset it first
  oldGeoView->setGrid(nullptr);
  newGeoView->setGrid(m_grid);

  emit viewTypeChanged();
}

void ShowGrid::setGridType(const QString& gridType)
{
  if (m_currentGridType == gridType)
    return;

  m_currentGridType = gridType;

  if (m_grid)
  {
    delete m_grid;
    m_grid = nullptr;
  }

  // Create a new Grid of the selected type
  if (gridType == s_latLong)
    m_grid = new LatitudeLongitudeGrid(this);
  else if (gridType == s_mgrs)
    m_grid = new MGRSGrid(this);
  else if (gridType == s_utm)
    m_grid = new UTMGrid(this);
  else if (gridType == s_usng)
    m_grid = new USNGGrid(this);

  // Set the grid on the current view
  if (m_currentViewType == s_mapView)
    m_mapView->setGrid(m_grid);
  else
    m_sceneView->setGrid(m_grid);

  // Set properties from current UI values
  setGridVisible(m_gridVisible);
  setLabelsVisible(m_labelsVisible);
  setLineColor(m_currentLineColor);
  setLabelColor(m_currentLabelColor);
  setLabelPosition(m_currentLabelPosition);
  setLabelFormat(m_currentLabelFormat);

  emit gridTypeChanged();
}

void ShowGrid::setGridVisible(bool visible)
{
  if (m_grid->isVisible() == visible)
    return;

  m_gridVisible = visible;
  m_grid->setVisible(visible);

  emit gridVisibleChanged();
}

void ShowGrid::setLabelsVisible(bool visible)
{
  if (m_grid->isLabelsVisible() == visible)
    return;

  m_labelsVisible = visible;
  m_grid->setLabelsVisible(visible);

  emit labelsVisibleChanged();
}

void ShowGrid::setLineColor(const QString& lineColor)
{
  m_currentLineColor = lineColor;

  SimpleLineSymbol* lineSymbol = static_cast<SimpleLineSymbol*>(m_grid->lineSymbol(0));
  lineSymbol->setColor(lineColor.toLower());

  // Some grids have multiple levels, in this sample we set the same symbol for all levels
  for (int level = 0; level < m_grid->levelCount(); ++level)
    m_grid->setLineSymbol(level, lineSymbol);

  emit lineColorChanged();
}

void ShowGrid::setLabelColor(const QString& labelColor)
{
  m_currentLabelColor = labelColor;

  TextSymbol* labelSymbol = static_cast<TextSymbol*>(m_grid->textSymbol(0));
  labelSymbol->setColor(labelColor.toLower());

  // Some grids have multiple levels, in this sample we set the same symbol for all levels
  for (int level = 0; level < m_grid->levelCount(); ++level)
    m_grid->setTextSymbol(level, labelSymbol);

  emit labelColorChanged();
}

void ShowGrid::setLabelPosition(const QString& labelPosition)
{
  m_currentLabelPosition = labelPosition;

  if (labelPosition == s_geographic)
    m_grid->setLabelPosition(GridLabelPosition::Geographic);
  else if (labelPosition == s_bottomLeft)
    m_grid->setLabelPosition(GridLabelPosition::BottomLeft);
  else if (labelPosition == s_bottomRight)
    m_grid->setLabelPosition(GridLabelPosition::BottomRight);
  else if (labelPosition == s_topLeft)
    m_grid->setLabelPosition(GridLabelPosition::TopLeft);
  else if (labelPosition == s_topRight)
    m_grid->setLabelPosition(GridLabelPosition::TopRight);
  else if (labelPosition == s_center)
    m_grid->setLabelPosition(GridLabelPosition::Center);
  else if (labelPosition == s_allSides)
    m_grid->setLabelPosition(GridLabelPosition::AllSides);

  emit labelPositionChanged();
}

void ShowGrid::setLabelFormat(const QString& labelFormat)
{
  m_currentLabelFormat = labelFormat;

  // Only LatitudeLongitudeGrid supports label formats
  if (m_grid->gridType() != GridType::LatitudeLongitudeGrid)
    return;

  if (labelFormat == s_decimalDegrees)
    static_cast<LatitudeLongitudeGrid*>(m_grid)->setLabelFormat(LatitudeLongitudeGridLabelFormat::DecimalDegrees);
  else if (labelFormat == s_degreesMinutesSeconds)
    static_cast<LatitudeLongitudeGrid*>(m_grid)->setLabelFormat(LatitudeLongitudeGridLabelFormat::DegreesMinutesSeconds);

  emit labelFormatChanged();
}