/// <summary>
/// 刷新预览图
/// 适用于simpleMaker状态
/// </summary>
private async Task refreshPreviewAsync()
{
//if (simpleMarkerSymbol == null)
// return;
if (simple_RB.Checked)
{
if (simpleMarkerSymbol == null)
{
return;
}
Esri.ArcGISRuntime.UI.RuntimeImage image = await simpleMarkerSymbol.CreateSwatchAsync(Color.WhiteSmoke);
System.Windows.Media.ImageSource imageSource = await Esri.ArcGISRuntime.UI.RuntimeImageExtensions.ToImageSourceAsync(image);
Image result = imageWpfToGDI(imageSource);
previewBox.Image = result;
previewBox.SizeMode = PictureBoxSizeMode.AutoSize | PictureBoxSizeMode.CenterImage;
}
else
{
if (pictureMarkerSymbol == null)
{
return;
}
Esri.ArcGISRuntime.UI.RuntimeImage image = await pictureMarkerSymbol.CreateSwatchAsync(Color.WhiteSmoke);
System.Windows.Media.ImageSource imageSource = await Esri.ArcGISRuntime.UI.RuntimeImageExtensions.ToImageSourceAsync(image);
Image result = imageWpfToGDI(imageSource);
previewBox.Image = result;
previewBox.SizeMode = PictureBoxSizeMode.AutoSize | PictureBoxSizeMode.CenterImage;
}
}
/// <summary>
/// 由传进来的layer初始化simpleMaker的样式
/// </summary>
private async void initLegend()
{
//初始化点样式
FeatureLayer feature = layer as FeatureLayer;
SimpleRenderer simpleRenderer = feature.Renderer as SimpleRenderer;
if (simpleRenderer != null)
{
//需要注意的是 这里不应该直接引用传递 否则在未确认的情况下也会影响到点的样式
simpleMarkerSymbol = simpleRenderer.Symbol.Clone() as SimpleMarkerSymbol;
//如果为空则说明Symbol不为简单点样式
if (simpleMarkerSymbol == null)
{
//因为后面需要订阅事件 所以不能为null
simpleMarkerSymbol = new SimpleMarkerSymbol();
pictureMarkerSymbol = simpleRenderer.Symbol.Clone() as PictureMarkerSymbol;
if (pictureMarkerSymbol != null)
{
Esri.ArcGISRuntime.UI.RuntimeImage image = await pictureMarkerSymbol.CreateSwatchAsync(Color.WhiteSmoke);
System.Windows.Media.ImageSource imageSource = await Esri.ArcGISRuntime.UI.RuntimeImageExtensions.ToImageSourceAsync(image);
Image result = imageWpfToGDI(imageSource);
previewBox.Image = result;
previewBox.SizeMode = PictureBoxSizeMode.Zoom;
simple_RB.Checked = false;
customPic_RB.Checked = true;
StyleCombox.Enabled = false;
colorBtn.Enabled = false;
sizeUpDown.Value = (decimal)pictureMarkerSymbol.Width + 1;
transparencyControl.Value = MainWindow.getAlpha(pictureMarkerSymbol.Opacity);
}
}
else
{
int index = findSelectIndex(x =>
{
return(simpleMarkerSymbol.Style.ToString().Equals(x.ToString()));
});
int count = ((List <SimpleMarkerSymbolStyle>)StyleCombox.DataSource).Count;
//设置传入的layer的样式
simple_RB.Checked = true;
StyleCombox.SelectedIndex = index;
colorBtn.BackColor = simpleMarkerSymbol.Color;
sizeUpDown.Value = (decimal)simpleMarkerSymbol.Size;
transparencyControl.Value = simpleMarkerSymbol.Color.A;
await refreshPreviewAsync();
}
}
//如果Layer是别的数据类型
else
{
}
}