private void MapImage_MouseDown(object sender, MouseEventArgs e)
{
_panOrQueryIsPan = false;
if (_map != null)
{
if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Middle) //dragging
{
_mousedrag = e.Location;
}
if (MouseDown != null)
{
MouseDown(_map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true), e);
}
}
}
private void MapImage_MouseUp(object sender, MouseEventArgs e)
{
if (_map != null)
{
if (MouseUp != null)
MouseUp(_map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true), e);
if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Middle)
{
if (ActiveTool == Tools.ZoomOut)
{
double scale = 0.5;
if (!_mousedragging)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
MapCenterChanged(_map.Center);
}
else
{
if (e.Y - _mousedrag.Y < 0) //Zoom out
scale = (float)Math.Pow(1 / (float)(_mousedrag.Y - e.Y), 0.5);
else //Zoom in
scale = 1 + (e.Y - _mousedrag.Y) * 0.1;
}
_map.Zoom *= 1 / scale;
if (MapZoomChanged != null)
MapZoomChanged(_map.Zoom);
Refresh();
}
else if (ActiveTool == Tools.ZoomIn)
{
double scale = 2;
if (!_mousedragging)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
MapCenterChanged(_map.Center);
}
else
{
if (e.Y - _mousedrag.Y < 0) //Zoom out
scale = (float)Math.Pow(1 / (float)(_mousedrag.Y - e.Y), 0.5);
else //Zoom in
scale = 1 + (e.Y - _mousedrag.Y) * 0.1;
}
_map.Zoom *= 1 / scale;
if (MapZoomChanged != null)
MapZoomChanged(_map.Zoom);
Refresh();
}
else if (ActiveTool == Tools.Pan || (ActiveTool == Tools.PanOrQuery && _panOrQueryIsPan))
{
if (_mousedragging)
{
System.Drawing.Point pnt = new System.Drawing.Point(Width / 2 + (_mousedrag.X - e.Location.X),
Height / 2 + (_mousedrag.Y - e.Location.Y));
_map.Center = _map.ImageToWorld(pnt, true);
if (MapCenterChanged != null)
MapCenterChanged(_map.Center);
}
else if(_panOnClick && !_zoomOnDblClick)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
MapCenterChanged(_map.Center);
}
Refresh();
}
else if (ActiveTool == Tools.Query || (ActiveTool == Tools.PanOrQuery && !_panOrQueryIsPan))
{
if (_queryLayerIndex < 0)
MessageBox.Show("No active layer to query");
else if (_queryLayerIndex < _map.Layers.Count)
QueryLayer(_map.Layers[_queryLayerIndex], new PointF(e.X, e.Y));
else if(_queryLayerIndex - Map.Layers.Count < _map.VariableLayers.Count)
QueryLayer(_map.VariableLayers[_queryLayerIndex - Map.Layers.Count], new PointF(e.X, e.Y));
else
MessageBox.Show("No active layer to query");
}
}
if (_mousedragImg != null)
{
_mousedragImg.Dispose();
_mousedragImg = null;
}
_mousedragging = false;
}
}
private void MapImage_MouseDown(object sender, MouseEventArgs e)
{
_panOrQueryIsPan = false;
if (_map != null)
{
if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Middle) //dragging
_mousedrag = e.Location;
if (MouseDown != null)
MouseDown(_map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true), e);
}
}
private void MapImage_MouseUp(object sender, MouseEventArgs e)
{
if (_map != null)
{
if (MouseUp != null)
{
MouseUp(_map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true), e);
}
if (e.Button == MouseButtons.Left || e.Button == MouseButtons.Middle)
{
if (ActiveTool == Tools.ZoomOut)
{
double scale = 0.5;
if (!_mousedragging)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
{
MapCenterChanged(_map.Center);
}
}
else
{
if (e.Y - _mousedrag.Y < 0) //Zoom out
{
scale = (float)Math.Pow(1 / (float)(_mousedrag.Y - e.Y), 0.5);
}
else //Zoom in
{
scale = 1 + (e.Y - _mousedrag.Y) * 0.1;
}
}
_map.Zoom *= 1 / scale;
if (MapZoomChanged != null)
{
MapZoomChanged(_map.Zoom);
}
Refresh();
}
else if (ActiveTool == Tools.ZoomIn)
{
double scale = 2;
if (!_mousedragging)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
{
MapCenterChanged(_map.Center);
}
}
else
{
if (e.Y - _mousedrag.Y < 0) //Zoom out
{
scale = (float)Math.Pow(1 / (float)(_mousedrag.Y - e.Y), 0.5);
}
else //Zoom in
{
scale = 1 + (e.Y - _mousedrag.Y) * 0.1;
}
}
_map.Zoom *= 1 / scale;
if (MapZoomChanged != null)
{
MapZoomChanged(_map.Zoom);
}
Refresh();
}
else if (ActiveTool == Tools.Pan || (ActiveTool == Tools.PanOrQuery && _panOrQueryIsPan))
{
if (_mousedragging)
{
System.Drawing.Point pnt = new System.Drawing.Point(Width / 2 + (_mousedrag.X - e.Location.X),
Height / 2 + (_mousedrag.Y - e.Location.Y));
_map.Center = _map.ImageToWorld(pnt, true);
if (MapCenterChanged != null)
{
MapCenterChanged(_map.Center);
}
}
else if (_panOnClick && !_zoomOnDblClick)
{
_map.Center = _map.ImageToWorld(new System.Drawing.Point(e.X, e.Y), true);
if (MapCenterChanged != null)
{
MapCenterChanged(_map.Center);
}
}
Refresh();
}
else if (ActiveTool == Tools.Query || (ActiveTool == Tools.PanOrQuery && !_panOrQueryIsPan))
{
if (_queryLayerIndex < 0)
{
MessageBox.Show("No active layer to query");
}
else if (_queryLayerIndex < _map.Layers.Count)
{
QueryLayer(_map.Layers[_queryLayerIndex], new PointF(e.X, e.Y));
}
else if (_queryLayerIndex - Map.Layers.Count < _map.VariableLayers.Count)
{
QueryLayer(_map.VariableLayers[_queryLayerIndex - Map.Layers.Count], new PointF(e.X, e.Y));
}
else
{
MessageBox.Show("No active layer to query");
}
}
}
if (_mousedragImg != null)
{
_mousedragImg.Dispose();
_mousedragImg = null;
}
_mousedragging = false;
}
}
