private void SetMapMarker(MapPoint location, SimpleMarkerSymbolStyle pointStyle, Color markerColor, Color markerOutlineColor)
{
float markerSize = 8.0f;
float markerOutlineThickness = 2.0f;
SimpleMarkerSymbol pointSymbol = new SimpleMarkerSymbol(pointStyle, markerColor, markerSize);
pointSymbol.Outline = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, markerOutlineColor, markerOutlineThickness);
Graphic pointGraphic = new Graphic(location, pointSymbol);
_graphicsOverlay.Graphics.Add(pointGraphic);
}
private void myPointSymbolStyle_SelectedIndexChanged(object sender, EventArgs e)
{
switch (myPointSymbolStyle.SelectedIndex)
{
case 0: simpleMarkerStyle = SimpleMarkerSymbolStyle.Circle; break;
case 1: simpleMarkerStyle = SimpleMarkerSymbolStyle.Cross; break;
case 2: simpleMarkerStyle = SimpleMarkerSymbolStyle.Diamond; break;
case 3: simpleMarkerStyle = SimpleMarkerSymbolStyle.Square; break;
case 4: simpleMarkerStyle = SimpleMarkerSymbolStyle.Triangle; break;
case 5: simpleMarkerStyle = SimpleMarkerSymbolStyle.X; break;
default: simpleMarkerStyle = SimpleMarkerSymbolStyle.Circle; break;
}
}
/// <summary>
/// 在指定图层上添加点要素
/// </summary>
/// <param name="overlay">图层实例</param>
/// <param name="point">位置</param>
/// <param name="pointSymbolStyle">点的呈现样式</param>
/// <param name="pointColor">颜色</param>
/// <param name="pointSize">大小</param>
public void AddPointToGraphicsOverlay(GraphicsOverlay overlay, MapPoint point, SimpleMarkerSymbolStyle pointSymbolStyle, Color pointColor, double pointSize)
{
Graphic graphic = new Graphic(point, new SimpleMarkerSymbol(pointSymbolStyle, pointColor, pointSize));
overlay.Graphics.Add(graphic);
}
/// <summary>
/// 初始化控件，进行事件订阅
/// </summary>
private void init()
{
StyleCombox.SelectedIndexChanged += (s, e) =>
{
ComboBox c = s as ComboBox;
if (c != null)
{
selectStyle = style[c.SelectedIndex];
simpleMarkerSymbol.Style = selectStyle;
}
};
sizeUpDown.KeyPress += async(s, e) =>
{
await refreshPreviewAsync();
};
sizeUpDown.ValueChanged += async(s, e) =>
{
NumericUpDown numericUpDown = s as NumericUpDown;
if (numericUpDown != null)
{
size = (int)numericUpDown.Value;
simpleMarkerSymbol.Size = size;
//previewBox.Scale(new SizeF(size, size));
if (pictureMarkerSymbol != null)
{
pictureMarkerSymbol.Width = size;
pictureMarkerSymbol.Height = size;
await refreshPreviewAsync();
}
}
};
simple_RB.CheckedChanged += async(s, e) =>
{
if (simple_RB.Checked)
{
previewBox.Image = null;
StyleCombox.Enabled = true;
colorBtn.Enabled = true;
cusPictureBtn.Enabled = false;
cusPictureBtn.Visible = false;
await refreshPreviewAsync();
}
else
{
previewBox.Image = null;
StyleCombox.Enabled = false;
colorBtn.Enabled = false;
cusPictureBtn.Enabled = true;
cusPictureBtn.Visible = true;
}
};
cusPictureBtn.Click += (s, e) =>
{
openPicDialog((ofd) =>
{
previewBox.Load(ofd.FileName);
previewBox.SizeMode = PictureBoxSizeMode.Zoom;
pictureMarkerSymbol = new PictureMarkerSymbol(new Uri(ofd.FileName));
cusPictureBtn.Visible = false;
cusPictureBtn.Enabled = false;
sizeUpDown.Value = (decimal)pictureMarkerSymbol.Height + 1;
});
};
simpleMarkerSymbol.PropertyChanged += async(s, e) =>
{
if (simple_RB.Checked)
{
await refreshPreviewAsync();
}
};
//透明度改变
transparencyControl.ValueChanged += async(s, e) =>
{
if (simple_RB.Checked)
{
Color c = simpleMarkerSymbol.Color;
simpleMarkerSymbol.Color = Color.FromArgb(e, c.R, c.G, c.B);
}
else
{
pictureMarkerSymbol.Opacity = transparencyControl.getOpacity();
//这里有可能因为线程问题抛出异常，需要捕捉异常,可能是用户上传的图片过大或者不合格，关掉窗口 让用户重新上传
try
{
await refreshPreviewAsync();
}
catch (Exception error)
{
MessageBox.Show("错误：\n " + error.Message + "\n图片不合格，请重新上传");
Close();
}
}
};
}
