Local Server map image layer

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
// [WriteFile Name=LocalServerMapImageLayer, Category=LocalServer]
// [Legal]
// Copyright 2017 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 "LocalServerMapImageLayer.h"

#include "Basemap.h"
#include "MapQuickView.h"
#include "Map.h"
#include "LocalServer.h"
#include "LocalMapService.h"
#include "ArcGISMapImageLayer.h"
#include "Viewpoint.h"

#include <QDir>
#include <QTemporaryDir>

using namespace Esri::ArcGISRuntime;

LocalServerMapImageLayer::LocalServerMapImageLayer(QQuickItem* parent) :
  QQuickItem(parent)
{
  // Create a temporary directory for the local server if one has not already been created
  if (!LocalServer::appDataPath().isEmpty() && !LocalServer::tempDataPath().isEmpty())
    return;

  // create temp/data path
  const QString tempPath = LocalServerMapImageLayer::shortestTempPath() + "/EsriQtTemp";

  // create the directory
  m_tempDir = std::make_unique<QTemporaryDir>(tempPath);

  // set the temp & app data path for the local server
  LocalServer::instance()->setTempDataPath(m_tempDir->path());
  LocalServer::instance()->setAppDataPath(m_tempDir->path());
}

LocalServerMapImageLayer::~LocalServerMapImageLayer() = default;

void LocalServerMapImageLayer::init()
{
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<LocalServerMapImageLayer>("Esri.Samples", 1, 0, "LocalServerMapImageLayerSample");
}

void LocalServerMapImageLayer::componentComplete()
{
  QQuickItem::componentComplete();

  // find QML MapView component
  m_mapView = findChild<MapQuickView*>("mapView");
  m_mapView->setWrapAroundMode(WrapAroundMode::Disabled);

  // Create a map using the topographic BaseMap
  m_map = new Map(BasemapStyle::ArcGISTopographic, this);

  // Set map to map view
  m_mapView->setMap(m_map);

  QString dataPath = QDir::homePath() + "/ArcGIS/Runtime/Data";

  // create a map service
  m_localMapService = new LocalMapService(dataPath + "/mpkx/RelationshipID.mpkx", this);

  if (LocalServer::instance()->isInstallValid())
  {
    connectSignals();
    if (LocalServer::status() == LocalServerStatus::Started)
      m_localMapService->start();
    else
      LocalServer::start();
  }
}

void LocalServerMapImageLayer::connectSignals()
{
  // local server status
  connect(LocalServer::instance(), &LocalServer::statusChanged, this, [this]()
  {
    if (LocalServer::status() == LocalServerStatus::Started)
    {
      // start the service
      m_localMapService->start();
    }
  });

  // local map service status
  connect(m_localMapService, &LocalMapService::statusChanged, this, [this]()
  {
    if (m_localMapService->status() == LocalServerStatus::Started)
    {
      ArcGISMapImageLayer* mapImageLayer = new ArcGISMapImageLayer(QUrl(m_localMapService->url()), this);

      connect(mapImageLayer, &ArcGISMapImageLayer::loadStatusChanged, this, [this, mapImageLayer](LoadStatus status)
      {
        if (status == LoadStatus::Loaded)
        {
          m_mapView->setViewpoint(Viewpoint(mapImageLayer->fullExtent()));
        }
      });
      m_map->operationalLayers()->append(mapImageLayer);
    }
  });
}

QString LocalServerMapImageLayer::shortestTempPath()
{
  // get tmp and home paths
  const QString tmpPath = QDir::tempPath();
  const QString homePath = QDir::homePath();

  // return whichever is shorter, temp or home path
  if (homePath.length() > tmpPath.length())
    return tmpPath;
  else
    return homePath;
}