private void OnDrawComplete(DrawEventArgs args)
{
if (DrawCompleted != null)
{
DrawCompleted(this , args);
}
}
public override void OnTap(GestureEventArgs e)
{
Point2D point = Map.ScreenToMap(e.GetPosition(Map));
DrawEventArgs args = new DrawEventArgs
{
DrawName = Name,
Element = new Pushpin { Location = point },
Geometry = new GeoPoint(point.X, point.Y)
};
OnDrawComplete(args);
base.OnTap(e);
}
private void endDraw(bool isCancel = false)
{
if (points != null)
{
PolygonElement pRegion = new PolygonElement()
{
Point2Ds = this.points.Clone(),
#region 所有风格的控制
Stroke = this.Stroke,
StrokeThickness = this.StrokeThickness,
StrokeMiterLimit = this.StrokeMiterLimit,
StrokeDashOffset = this.StrokeDashOffset,
StrokeDashArray = this.StrokeDashArray,
StrokeDashCap = this.StrokeDashCap,
StrokeEndLineCap = this.StrokeEndLineCap,
StrokeLineJoin = this.StrokeLineJoin,
StrokeStartLineCap = this.StrokeStartLineCap,
Opacity = this.Opacity,
Fill = this.Fill,
FillRule = this.FillRule
#endregion
};
GeoRegion geoRegion = new GeoRegion();//构造返回的Geometry
points.Add(startPt);//需要添加起始点做为最后一个点
geoRegion.Parts.Add(points);
DrawEventArgs args = new DrawEventArgs
{
DrawName = Name,
Element = pRegion,
Geometry = geoRegion,
Canceled = isCancel
};
Deactivate();
OnDrawCompleted(args);
}
}
private void endDraw(bool isDblClick = false, bool isCancel = false)
{
if (points != null)
{
if (isDblClick)
{
points.RemoveAt(points.Count - 1);
}
PolylineElement pLine = new PolylineElement()
{
Point2Ds = this.points.Clone(),
#region 所有风格的控制
Stroke = this.Stroke,
StrokeThickness = this.StrokeThickness,
StrokeMiterLimit = this.StrokeMiterLimit,
StrokeDashOffset = this.StrokeDashOffset,
StrokeDashArray = this.StrokeDashArray,
StrokeDashCap = this.StrokeDashCap,
StrokeEndLineCap = this.StrokeEndLineCap,
StrokeLineJoin = this.StrokeLineJoin,
StrokeStartLineCap = this.StrokeStartLineCap,
Opacity = this.Opacity,
Fill = this.Fill,
FillRule = this.FillRule
#endregion
};
GeoLine geoLine = new GeoLine();//构造返回的Geometry
geoLine.Parts.Add(points);
DrawEventArgs args = new DrawEventArgs
{
DrawName = Name,
Element = pLine, //Element = this.polyline //直接返回是固定像素的
Geometry = geoLine,
Canceled = isCancel
};
Deactivate();
OnDrawCompleted(args);
}
}
private void endDraw(double radius, bool isCancel = false)
{
if (this.ellipse != null)
{
//Point2D item = Map.ScreenToMap(e.GetPosition(Map));
Rectangle2D b = ElementsLayer.GetBBox(ellipse);
DrawEventArgs args2 = new DrawEventArgs
{
DrawName = Name,
Element = ellipse, //可以由它的bbox得到半径
Geometry = new GeoCircle(new Point2D(startPt.X, startPt.Y), radius), //返回圆的中心点
Canceled = isCancel
};
Deactivate();
OnDrawComplete(args2);
}
}
private void endDraw(bool isDblClick = false, bool isCancel = false)
{
if (points != null)
{
points.RemoveAt(points.Count - 2);
if (isDblClick)
{
points.RemoveAt(points.Count - 2);
}
PolygonElement pRegion = new PolygonElement()
{
Point2Ds = points.Clone(),//不克隆，在返回后还与下面的GeoRegion指向一个内存地址
#region 所有风格的控制
Stroke = this.Stroke,
StrokeThickness = this.StrokeThickness,
StrokeMiterLimit = this.StrokeMiterLimit,
StrokeDashOffset = this.StrokeDashOffset,
StrokeDashArray = this.StrokeDashArray,
StrokeDashCap = this.StrokeDashCap,
StrokeEndLineCap = this.StrokeEndLineCap,
StrokeLineJoin = this.StrokeLineJoin,
StrokeStartLineCap = this.StrokeStartLineCap,
Opacity = this.Opacity,
Fill = this.Fill,
FillRule = this.FillRule
#endregion
};//构造返回Element对象
GeoRegion geoRegion = new GeoRegion();//构造返回的Geometry
points.Add(startPoint);//需要添加起始点做为最后一个点
geoRegion.Parts.Add(points);
DrawEventArgs args = new DrawEventArgs
{
DrawName = Name,
Element = pRegion, //Element = this.polyline //直接返回是固定像素的
Geometry = geoRegion,
Canceled = isCancel
};
Deactivate();
OnDrawCompleted(args);
}
}
private void endDraw(bool isCancel = false)
{
if (rectangle != null)
{
Rectangle2D bounds = (Rectangle2D)rectangle.GetValue(ElementsLayer.BBoxProperty);
if (bounds.IsEmpty || bounds.Width == 0.0 || bounds.Height == 0.0)
{
return;
}
//GeoRegion geoRegion = new GeoRegion();//构造返回的Geometry
//Point2DCollection geoPoints = new Point2DCollection();
//geoPoints.Add(bounds.BottomLeft);
//geoPoints.Add(new Point2D(bounds.Right, bounds.Bottom));
//geoPoints.Add(bounds.TopRight);
//geoPoints.Add(new Point2D(bounds.Left, bounds.Top));
//geoPoints.Add(bounds.BottomLeft);//需要添加起始点做为最后一个点
//geoRegion.Parts.Add(geoPoints);
GeoRegion geoRegion = bounds.ToGeoRegion();
DrawEventArgs args2 = new DrawEventArgs
{
DrawName = this.Name,
Element = this.rectangle,
Geometry = geoRegion,
Canceled = isCancel
};
Deactivate();
OnDrawCompleted(args2);
}
}
