src/GUI/mapitem.cpp

   1 #include <cmath>
   2 #include <QCursor>
   3 #include <QPainter>
   4 #include <QGraphicsSceneMouseEvent>
   5 #include "map/map.h"
   6 #include "mapaction.h"
   7 #include "tooltip.h"
   8 #include "mapitem.h"
   9 #ifdef Q_OS_ANDROID
  10 #include "popup.h"
  11 #endif // Q_OS_ANDROID
  12
  13
  14 static void growLeft(Map *map, const Coordinates &c, QRectF &rect)
  15 {
  16         QPointF p(map->ll2xy(c));
  17
  18         if (p.x() < rect.left())
  19                 rect.setLeft(p.x());
  20 }
  21
  22 static void growRight(Map *map, const Coordinates &c, QRectF &rect)
  23 {
  24
  25         QPointF p(map->ll2xy(c));
  26
  27         if (p.x() > rect.right())
  28                 rect.setRight(p.x());
  29 }
  30
  31 static void growTop(Map *map, const Coordinates &c, QRectF &rect)
  32 {
  33         QPointF p(map->ll2xy(c));
  34
  35         if (p.y() > rect.top())
  36                 rect.setTop(p.y());
  37 }
  38
  39 static void growBottom(Map *map, const Coordinates &c, QRectF &rect)
  40 {
  41         QPointF p(map->ll2xy(c));
  42
  43         if (p.y() < rect.bottom())
  44                 rect.setBottom(p.y());
  45 }
  46
  47 static QRectF bbox(const RectC &rect, Map *map, int samples = 100)
  48 {
  49         if (!rect.isValid())
  50                 return QRectF();
  51
  52         double dx = rect.width() / samples;
  53         double dy = rect.height() / samples;
  54
  55         QPointF tl(map->ll2xy(rect.topLeft()));
  56         QPointF br(map->ll2xy(rect.bottomRight()));
  57         QRectF prect(tl, br);
  58
  59         for (int i = 0; i <= samples; i++) {
  60                 double x = remainder(rect.left() + i * dx, 360.0);
  61                 growTop(map, Coordinates(x, rect.bottom()), prect);
  62                 growBottom(map, Coordinates(x, rect.top()), prect);
  63         }
  64
  65         for (int i = 0; i <= samples; i++) {
  66                 double y = rect.bottom() + i * dy;
  67                 growLeft(map, Coordinates(rect.left(), y), prect);
  68                 growRight(map, Coordinates(rect.right(), y), prect);
  69         }
  70
  71         return prect;
  72 }
  73
  74 ToolTip MapItem::info() const
  75 {
  76         ToolTip tt;
  77
  78         if (!_name.isEmpty())
  79                 tt.insert(tr("Name"), _name);
  80         if (!_fileName.isEmpty())
  81                 tt.insert(tr("File"), Util::displayName(_fileName));
  82
  83         return tt;
  84 }
  85
  86 MapItem::MapItem(MapAction *action, Map *map, GraphicsItem *parent)
  87   : PlaneItem(parent)
  88 {
  89         Map *src = action->data().value<Map*>();
  90         Q_ASSERT(map->isReady());
  91
  92         _name = src->name();
  93         _fileName = src->path();
  94         _bounds = src->llBounds();
  95
  96         connect(this, &MapItem::triggered, action, &MapAction::trigger);
  97
  98         _digitalZoom = 0;
  99
 100         _width = 2;
 101         _opacity = 0.5;
 102         QBrush brush(Qt::SolidPattern);
 103         _pen = QPen(brush, _width);
 104
 105         updatePainterPath(map);
 106
 107         setCursor(Qt::ArrowCursor);
 108         setAcceptHoverEvents(true);
 109 }
 110
 111 void MapItem::updatePainterPath(Map *map)
 112 {
 113         _painterPath = QPainterPath();
 114
 115         QRectF r(bbox(_bounds, map));
 116
 117         if (r.left() > r.right()) {
 118                 QRectF r1(bbox(RectC(_bounds.topLeft(),
 119                   Coordinates(180, _bounds.bottomRight().lat())), map));
 120                 QRectF r2(bbox(RectC(Coordinates(-180, _bounds.topLeft().lat()),
 121                   _bounds.bottomRight()), map));
 122
 123                 _painterPath.addRect(r1);
 124                 _painterPath.addRect(r2);
 125         } else
 126                 _painterPath.addRect(r);
 127 }
 128
 129 void MapItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
 130   QWidget *widget)
 131 {
 132         Q_UNUSED(option);
 133         Q_UNUSED(widget);
 134
 135         painter->setPen(_width ? _pen : QPen(Qt::NoPen));
 136         painter->drawPath(_painterPath);
 137         painter->fillPath(_painterPath, _brush);
 138
 139         //QPen p = QPen(QBrush(Qt::red), 0);
 140         //painter->setPen(p);
 141         //painter->drawRect(boundingRect());
 142 }
 143
 144 void MapItem::setMap(Map *map)
 145 {
 146         prepareGeometryChange();
 147         updatePainterPath(map);
 148 }
 149
 150 void MapItem::setColor(const QColor &color)
 151 {
 152         if (_pen.color() == color)
 153                 return;
 154
 155         QColor bc(color);
 156         bc.setAlphaF(_opacity * color.alphaF());
 157
 158         _pen.setColor(color);
 159         _brush = QBrush(bc);
 160         update();
 161 }
 162
 163 void MapItem::setOpacity(qreal opacity)
 164 {
 165         if (_opacity == opacity)
 166                 return;
 167
 168         _opacity = opacity;
 169         QColor bc(_pen.color());
 170         bc.setAlphaF(_opacity * _pen.color().alphaF());
 171         _brush = QBrush(bc);
 172
 173         update();
 174 }
 175
 176 void MapItem::setWidth(qreal width)
 177 {
 178         if (_width == width)
 179                 return;
 180
 181         prepareGeometryChange();
 182
 183         _width = width;
 184         _pen.setWidthF(_width * pow(2, -_digitalZoom));
 185 }
 186
 187 void MapItem::setPenStyle(Qt::PenStyle style)
 188 {
 189         if (_pen.style() == style)
 190                 return;
 191
 192         _pen.setStyle(style);
 193         update();
 194 }
 195
 196 void MapItem::setDigitalZoom(int zoom)
 197 {
 198         if (_digitalZoom == zoom)
 199                 return;
 200
 201         prepareGeometryChange();
 202
 203         _digitalZoom = zoom;
 204         _pen.setWidthF(_width * pow(2, -_digitalZoom));
 205 }
 206
 207 void MapItem::hoverEnterEvent(QGraphicsSceneHoverEvent *event)
 208 {
 209         Q_UNUSED(event);
 210
 211         _pen.setWidthF((_width + 1) * pow(2, -_digitalZoom));
 212         update();
 213
 214 #ifdef Q_OS_ANDROID
 215         Popup::show(event->screenPos(), info(), event->widget());
 216 #endif // Q_OS_ANDROID
 217 }
 218
 219 void MapItem::hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
 220 {
 221         Q_UNUSED(event);
 222
 223         _pen.setWidthF(_width * pow(2, -_digitalZoom));
 224         update();
 225 }
 226
 227 void MapItem::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event)
 228 {
 229         Q_UNUSED(event);
 230
 231         emit triggered();
 232 }