1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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6 | **
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7 | ** This file is part of the documentation of Qt. It was originally
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8 | ** published as part of Qt Quarterly.
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9 | **
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10 | ** $QT_BEGIN_LICENSE:LGPL$
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11 | ** Commercial Usage
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12 | ** Licensees holding valid Qt Commercial licenses may use this file in
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13 | ** accordance with the Qt Commercial License Agreement provided with the
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14 | ** Software or, alternatively, in accordance with the terms contained in
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15 | ** a written agreement between you and Nokia.
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16 | **
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17 | ** GNU Lesser General Public License Usage
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18 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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19 | ** General Public License version 2.1 as published by the Free Software
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20 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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21 | ** packaging of this file. Please review the following information to
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22 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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23 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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24 | **
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25 | ** In addition, as a special exception, Nokia gives you certain additional
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26 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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27 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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28 | **
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29 | ** GNU General Public License Usage
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30 | ** Alternatively, this file may be used under the terms of the GNU
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31 | ** General Public License version 3.0 as published by the Free Software
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32 | ** Foundation and appearing in the file LICENSE.GPL included in the
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33 | ** packaging of this file. Please review the following information to
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34 | ** ensure the GNU General Public License version 3.0 requirements will be
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35 | ** met: http://www.gnu.org/copyleft/gpl.html.
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36 | **
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37 | ** If you have questions regarding the use of this file, please contact
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38 | ** Nokia at qt-info@nokia.com.
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39 | ** $QT_END_LICENSE$
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40 | **
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41 | ****************************************************************************/
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42 |
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43 | #include <QApplication>
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44 | #include <QGeoCoordinate>
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45 | #include <QGraphicsScene>
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46 |
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47 | #include <QTimer>
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48 | #include <QMenu>
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49 | #include "mapwidget.h"
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50 | #include "Landmark.h"
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51 | #include "Map.h"
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52 |
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53 | using namespace QtMobility;
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54 |
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55 | MapWidget::MapWidget(Map* map,QWidget *parent)
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56 | : QGraphicsView(parent) {
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57 | setCursor(Qt::ArrowCursor);
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58 | setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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59 | setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
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60 |
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61 | geoMap = 0;
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62 | dragging = false;
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63 | pressed = false;
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64 | landmark_match=NULL;
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65 | is_uptodate=true;
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66 | this->map=map;
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67 |
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68 | m_scene = new QGraphicsScene(this);
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69 | setScene(m_scene);
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70 | setMouseTracking(true);
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71 |
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72 | landmarks=new QList<Landmark*>;
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73 | landmarks_old=new QList<Landmark*>;
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74 | }
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75 |
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76 | QGraphicsScene *MapWidget::scene(void) const
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77 | {
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78 | return m_scene;
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79 | }
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80 |
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81 | void MapWidget::setMap(QGraphicsGeoMap *geoMap)
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82 | {
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83 | m_scene->clear();
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84 | m_scene->addItem(geoMap);
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85 | this->geoMap = geoMap;
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86 | geoMap->resize(m_scene->sceneRect().width(), m_scene->sceneRect().height());
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87 | }
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88 |
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89 | void MapWidget::mousePressEvent(QMouseEvent *event)
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90 | {
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91 | if (event->button() == Qt::LeftButton)
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92 | {
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93 | pressed = true;
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94 | dragStartPosition = event->pos();
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95 | QTimer::singleShot(qApp->startDragTime(), this, SLOT(initDrag()));
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96 | event->accept();
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97 | }
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98 |
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99 | if (event->button() == Qt::RightButton)
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100 | {
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101 | QMenu *menu = new QMenu("nom", this);
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102 |
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103 | if(cursor().shape()!=Qt::PointingHandCursor)
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104 | {
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105 | QAction *b,*z;//*a,
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106 | QList<QAction*> go_to_actions;
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107 | QList<QAction*> centered_actions;
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108 |
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109 | QMenu *centered_menu=menu->addMenu("centered");
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110 | for(int i=0;i<points.count();i++)
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111 | {
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112 | QAction* action=centered_menu->addAction(points.at(i));
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113 | centered_actions.append(action);
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114 | action->setCheckable(true);
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115 | if(map->centeredPoint()==i)
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116 | {
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117 | action->setChecked(true);
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118 | }
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119 | else
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120 | {
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121 | action->setChecked(false);
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122 | }
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123 | }
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124 |
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125 | menu->addSeparator();
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126 |
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127 | b=menu->addAction("place checkpoint");
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128 | QMenu *go_to_menu=menu->addMenu("go to");
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129 | for(int i=0;i<landmarks->count();i++)
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130 | {
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131 | QAction* action=go_to_menu->addAction(QString("checkpoint %1").arg(i+1));
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132 | go_to_actions.append(action);
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133 | }
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134 | if(landmarks->count()==0) go_to_menu->setEnabled(false);
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135 |
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136 | map->appendmenu(menu);
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137 | z=map->execmenu(this,menu,event->globalPos());
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138 |
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139 | for(int i=0;i<centered_actions.count();i++)
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140 | {
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141 | if(z==centered_actions.at(i))
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142 | {
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143 | if(centered_actions.at(i)->isChecked())
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144 | {
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145 | map->setCenteredPoint(i);
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146 | }
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147 | else
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148 | {
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149 | map->setCenteredPoint(-1);
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150 | }
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151 |
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152 | break;
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153 | }
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154 | }
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155 |
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156 | if(z==b)
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157 | {
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158 | Landmark* landmark=new Landmark(geoMap,geoMap->screenPositionToCoordinate(event->pos()),QString("%1").arg(landmarks->count()+1));
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159 | landmarks->append(landmark);
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160 | is_uptodate=false;
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161 | }
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162 | for(int i=0;i<go_to_actions.count();i++)
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163 | {
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164 | if(z==go_to_actions.at(i))
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165 | {
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166 | map->setCenteredPoint(-1);
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167 | geoMap->setCenter(landmarks->at(i)->coordinate());
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168 | break;
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169 | }
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170 | }
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171 |
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172 | }
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173 | else
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174 | {
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175 | QAction *a,*z;
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176 | a=menu->addAction("delete");
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177 | z=menu->exec(event->globalPos());
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178 |
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179 | if(z==a)
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180 | {
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181 | int i;
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182 | for(i=0;i<landmarks->count();i++)
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183 | {
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184 | if(landmarks->at(i)->contains(geoMap->screenPositionToCoordinate(event->pos())))
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185 | {
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186 | delete landmarks->at(i);
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187 | landmarks->removeAt(i);
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188 | break;
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189 | }
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190 | }
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191 | for(int j=i;j<landmarks->count();j++)
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192 | {
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193 | landmarks->at(j)->setText(QString("%1").arg(j+1));
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194 | }
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195 | }
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196 | }
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197 |
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198 | delete menu;
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199 | }
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200 | }
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201 |
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202 | void MapWidget::initDrag(void)
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203 | {
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204 | if (pressed && map->isCentered() && landmark_match==NULL) {
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205 | dragging = true;
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206 | }
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207 | }
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208 |
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209 | void MapWidget::mouseMoveEvent(QMouseEvent *event)
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210 | {
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211 | if (!geoMap)
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212 | return;
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213 |
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214 | Qt::CursorShape new_cursor;
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215 | if(dragging==true)
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216 | {
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217 | new_cursor=Qt::ClosedHandCursor;
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218 | }
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219 | else
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220 | {
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221 | if(map->isCentered())
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222 | {
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223 | if(pressed==true)
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224 | {
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225 | new_cursor=Qt::ForbiddenCursor;
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226 | }
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227 | else
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228 | {
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229 | new_cursor=Qt::ArrowCursor;
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230 | }
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231 | }
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232 | else
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233 | {
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234 | new_cursor=Qt::OpenHandCursor;
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235 | }
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236 | if(landmark_match!=NULL) new_cursor=Qt::PointingHandCursor;
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237 | }
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238 |
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239 |
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240 | for(int i=0;i<landmarks->count();i++)
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241 | {
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242 | if(landmarks->at(i)->contains(geoMap->screenPositionToCoordinate(event->pos())))
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243 | {
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244 | if(pressed && landmark_match==NULL)
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245 | {
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246 | landmark_match=landmarks->at(i);
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247 | landmark_match->setColor(Qt::red);
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248 | is_uptodate=false;
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249 | }
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250 | new_cursor=Qt::PointingHandCursor;
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251 | break;
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252 | }
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253 | }
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254 |
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255 | if(new_cursor!=cursor().shape()) setCursor(new_cursor);
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256 |
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257 | QPoint v = event->pos() - dragStartPosition;
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258 |
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259 | if (dragging) {
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260 | geoMap->pan(-v.x(), -v.y());
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261 | dragStartPosition = event->pos();
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262 |
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263 | } else if(landmark_match!=NULL){
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264 | landmark_match->setCoordinate(geoMap->screenPositionToCoordinate(event->pos()));
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265 |
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266 | } else if (pressed && !map->isCentered() &&
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267 | v.manhattanLength() >= qApp->startDragDistance()) {
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268 | dragging = true;
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269 |
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270 | } else {
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271 | dragStartPosition = event->pos();
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272 | emit positionChanged(geoMap->screenPositionToCoordinate(event->pos()));
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273 | }
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274 |
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275 | event->accept();
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276 | }
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277 |
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278 | void MapWidget::mouseReleaseEvent(QMouseEvent *event)
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279 | {
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280 | pressed = false;
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281 | landmark_match=NULL;
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282 |
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283 | if (dragging) {
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284 | QPoint v = event->pos() - dragStartPosition;
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285 | geoMap->pan(-v.x(), -v.y());
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286 | dragging = false;
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287 | }
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288 |
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289 | event->accept();
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290 | }
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291 |
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292 | void MapWidget::resizeEvent(QResizeEvent *event)
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293 | {
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294 | if (geoMap) {
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295 | m_scene->setSceneRect(QRectF(0, 0, event->size().width(), event->size().height()));
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296 | geoMap->resize(event->size().width(), event->size().height());
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297 | }
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298 |
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299 | QGraphicsView::resizeEvent(event);
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300 | }
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301 |
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302 | void MapWidget::wheelEvent(QWheelEvent *event)
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303 | {
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304 | int steps = event->delta() / 120;
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305 | int zoom = qBound(geoMap->minimumZoomLevel(), geoMap->zoomLevel() + steps,
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306 | geoMap->maximumZoomLevel());
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307 |
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308 | if (zoom != geoMap->zoomLevel()) geoMap->setZoomLevel(zoom);
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309 | //if(!centered) geoMap->setCenter(geoMap->screenPositionToCoordinate(event->pos()));
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310 | }
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311 |
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312 | void MapWidget::mouseDoubleClickEvent(QMouseEvent *event)
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313 | {
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314 | if(!map->isCentered()) geoMap->setCenter(geoMap->screenPositionToCoordinate(event->pos()));
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315 | }
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316 |
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317 | bool MapWidget::IsUptodate(void)
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318 | {
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319 | return is_uptodate;
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320 | }
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321 |
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322 | void MapWidget::SetUptodate(void)
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323 | {
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324 | for(int i=0;i<landmarks_old->count();i++)
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325 | {
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326 | delete landmarks_old->at(i);
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327 | }
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328 | landmarks_old->clear();
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329 |
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330 | for(int i=0;i<landmarks->count();i++)
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331 | {
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332 | landmarks->at(i)->setColor(Qt::white);
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333 | Landmark* landmark=new Landmark(geoMap,landmarks->at(i)->coordinate(),QString("%1").arg(landmarks->count()+1));
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334 | landmarks_old->append(landmark);
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335 | landmarks_old->at(i)->setVisible(false);
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336 | }
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337 |
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338 | is_uptodate=true;
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339 | }
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340 |
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341 | void MapWidget::Reset(void)
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342 | {
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343 | for(int i=0;i<landmarks->count();i++)
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344 | {
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345 | delete landmarks->at(i);
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346 | }
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347 | landmarks->clear();
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348 |
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349 | for(int i=0;i<landmarks_old->count();i++)
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350 | {
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351 | Landmark* landmark=new Landmark(geoMap,landmarks_old->at(i)->coordinate(),QString("%1").arg(landmarks->count()+1));
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352 | landmarks->append(landmark);
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353 | landmarks->at(i)->setColor(Qt::white);
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354 | }
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355 |
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356 | is_uptodate=true;
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357 | }
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358 |
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359 | QList<Landmark*>* MapWidget::Landmarks(void)
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360 | {
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361 | return landmarks;
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362 | }
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363 |
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364 | bool MapWidget::LandmarkToSend(int index)
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365 | {
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366 | if(index>=landmarks_old->count()) return true;
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367 |
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368 | if(landmarks->at(index)->coordinate()!=landmarks_old->at(index)->coordinate())
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369 | return true;
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370 | else
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371 | return false;
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372 | }
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373 | void MapWidget::RemoveLandmarks(void)
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374 | {
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375 | for(int i=0;i<landmarks->count();i++)
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376 | {
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377 | landmarks->at(i)->RemoveLandmark();
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378 | }
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379 | for(int i=0;i<landmarks_old->count();i++)
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380 | {
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381 | landmarks_old->at(i)->RemoveLandmark();
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382 | }
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383 | }
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384 |
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385 | void MapWidget::AddLandmarks(QGraphicsGeoMap *geoMap)
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386 | {
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387 | for(int i=0;i<landmarks->count();i++)
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388 | {
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389 | landmarks->at(i)->AddLandmark(geoMap);
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390 | }
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391 | for(int i=0;i<landmarks_old->count();i++)
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392 | {
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393 | landmarks_old->at(i)->AddLandmark(geoMap);
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394 | }
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395 | }
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396 |
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397 | void MapWidget::AddLandmark(const QGeoCoordinate &coordinate)
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398 | {
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399 | Landmark* landmark=new Landmark(geoMap,coordinate,QString("%1").arg(landmarks->count()+1));
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400 | landmarks->append(landmark);
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401 | landmark->setColor(Qt::white);
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402 | landmark=new Landmark(geoMap,coordinate,QString("%1").arg(landmarks_old->count()+1));
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403 | landmarks_old->append(landmark);
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404 | landmark->setColor(Qt::white);
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405 | landmark->setVisible(false);
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406 | }
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407 |
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408 | void MapWidget::AddPoint(QString name)
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409 | {
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410 | points.append(name);
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411 | }
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