Manage operational layers

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
// [WriteFile Name=ManageOperationalLayers, Category=Layers]
// [Legal]
// Copyright 2019 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 "ManageOperationalLayers.h"

#include "Map.h"
#include "MapQuickView.h"
#include "ArcGISMapImageLayer.h"
#include "DrawOrderLayerListModel.h"

using namespace Esri::ArcGISRuntime;

ManageOperationalLayers::ManageOperationalLayers(QObject* parent /* = nullptr */):
  QObject(parent),
  m_map(new Map(BasemapStyle::ArcGISTopographic, this)),
  m_elevationLayer(new ArcGISMapImageLayer(QUrl("https://sampleserver5.arcgisonline.com/arcgis/rest/services/Elevation/WorldElevations/MapServer"), this)),
  m_censusLayer(new ArcGISMapImageLayer(QUrl("https://sampleserver5.arcgisonline.com/arcgis/rest/services/Census/MapServer"), this)),
  m_damageLayer(new ArcGISMapImageLayer(QUrl("https://sampleserver5.arcgisonline.com/arcgis/rest/services/DamageAssessment/MapServer"), this)),
  m_drawOrderListModel(new DrawOrderLayerListModel(this))
{
  // add layers to the map
  m_map->operationalLayers()->append(m_elevationLayer);
  m_map->operationalLayers()->append(m_censusLayer);
  m_map->operationalLayers()->append(m_damageLayer);

  // Create a custom DrawOrderListModel. This is a QSortFilterProxyModel used to
  // "reverse" the order appearance so the top level layer displays at the top
  // of the list view instead of the bottom, which is the default behavior. This
  // will closer match the widely accepted standard table of contents UX where
  // the top level layer displays at the top of the view.
  m_drawOrderListModel->setLayerListModel(m_map->operationalLayers());
}

ManageOperationalLayers::~ManageOperationalLayers() = default;

void ManageOperationalLayers::init()
{
  // Register the map view for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<ManageOperationalLayers>("Esri.Samples", 1, 0, "ManageOperationalLayersSample");
  qmlRegisterUncreatableType<QAbstractItemModel>("Esri.Samples", 1, 0, "AbstractItemModel", "AbstractItemModel is uncreateable");
}

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

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

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

  emit mapViewChanged();
}

QAbstractItemModel* ManageOperationalLayers::layerListModel() const
{
  return m_drawOrderListModel;
}

void ManageOperationalLayers::moveLayerUp(int index)
{
  if (!m_drawOrderListModel || !m_map)
    return;

  // get the index and move the layer up
  int modelIndex = m_drawOrderListModel->mappedIndex(index);
  m_map->operationalLayers()->move(modelIndex, modelIndex + 1);
}

void ManageOperationalLayers::moveLayerDown(int index)
{
  if (!m_drawOrderListModel || !m_map)
    return;

  // get the index and move the layer down
  int modelIndex = m_drawOrderListModel->mappedIndex(index);
  m_map->operationalLayers()->move(modelIndex, modelIndex - 1);
}

void ManageOperationalLayers::removeLayer(int index)
{
  if (!m_drawOrderListModel || !m_map)
    return;

  // get the index
  int modelIndex = m_drawOrderListModel->mappedIndex(index);
  Layer* lyr = m_map->operationalLayers()->at(modelIndex);

  // add the layer to the other list
  m_deletedLayers.append(lyr);
  m_deletedLayersListNames.append(lyr->name());
  emit deletedLayersListChanged();

  // remove from the map
  m_map->operationalLayers()->removeAt(modelIndex);
}

void ManageOperationalLayers::addLayer(int index)
{
  if (!m_drawOrderListModel || !m_map)
    return;

  // get the layer from the deleted list
  Layer* lyr = m_deletedLayers.at(index);
  if (!lyr)
    return;

  // remove the layer from the deleted list
  m_deletedLayers.removeAt(index);
  m_deletedLayersListNames.removeAt(index);
  emit deletedLayersListChanged();

  // add the layer to the map's operational layers
  m_map->operationalLayers()->append(lyr);
}