private void Activate()
{
if (Map == null || Map.Layers == null)
{
return;
}
polygon = new PolygonElement();
#region 所有风格的控制
polygon.Stroke = Stroke;
polygon.StrokeThickness = StrokeThickness;
polygon.StrokeMiterLimit = StrokeMiterLimit;
polygon.StrokeDashOffset = StrokeDashOffset;
polygon.StrokeDashArray = StrokeDashArray;
polygon.StrokeDashCap = StrokeDashCap;
polygon.StrokeEndLineCap = StrokeEndLineCap;
polygon.StrokeLineJoin = StrokeLineJoin;
polygon.StrokeStartLineCap = StrokeStartLineCap;
polygon.Opacity = Opacity;
polygon.Fill = Fill;
polygon.FillRule = FillRule;
#endregion
points = new Point2DCollection();
polygon.Point2Ds = points;
points.Add(startPt);
DrawLayer = new ElementsLayer();
Map.Layers.Add(DrawLayer);
DrawLayer.Children.Add(polygon);
isActivated = true;
isDrawing = true;
}
/// <summary>${ui_action_MapAction_method_deactivate_D}</summary>
public override void Deactivate()
{
isActivated = false;
isDrawing = false;
polygon = null;
points = null;
if (DrawLayer != null)
{
DrawLayer.Children.Clear();
}
if (Map != null && Map.Layers != null)
{
Map.Layers.Remove(DrawLayer);
}
}
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)
{
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);
}
}
