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using FLY.Thick.Base.IService;
using LiveCharts;
using LiveCharts.Helpers;
using LiveCharts.Wpf;
using System;
using System.Linq;
using System.Windows.Controls;
using System.Windows.Input;
using Unity;
namespace FLY.Thick.Base.UI
{
/// <summary>
/// PgGrid.xaml 的交互逻辑
/// </summary>
public partial class PgGrid : Page
{
PgGridVm viewModel;
/// <summary>
///
/// </summary>
public PgGrid()
{
InitializeComponent();
InitializeChart();
}
void InitializeChart()
{
//写在xaml ,设计模式会引发 最大值最小值=0 异常， 所以用代码方式编写
//
//异常内容：
//LiveChartsException: One axis has an invalid range, it is or it tends to zero, please ensure your axis has a valid range
var axis = chart1.AxisX[0];
axis.SetBinding(LiveCharts.Wpf.Axis.LabelFormatterProperty, nameof(PgGridVm.XFormatter));
axis.SetBinding(LiveCharts.Wpf.Axis.MaxValueProperty, nameof(PgGridVm.XUpper));
axis.SetBinding(LiveCharts.Wpf.Axis.MinValueProperty, nameof(PgGridVm.XLower));
axis = chart1.AxisY[0];
axis.SetBinding(LiveCharts.Wpf.Axis.LabelFormatterProperty, nameof(PgGridVm.YFormatter));
axis.SetBinding(LiveCharts.Wpf.Axis.MaxValueProperty, nameof(PgGridVm.YUpper));
axis.SetBinding(LiveCharts.Wpf.Axis.MinValueProperty, nameof(PgGridVm.YLower));
}
/// <summary>
/// 初始化
/// </summary>
/// <param name="container"></param>
/// <param name="initParam"></param>
/// <param name="gageService"></param>
/// <param name="flyADService"></param>
[InjectionMethod]
public void Init(
IUnityContainer container,
IInitParamService initParam,
ITDGageService gageService,
IFlyADService flyADService
)
{
viewModel = new PgGridVm();
viewModel.Init(initParam, gageService, flyADService);
this.DataContext = viewModel;
container.BuildUp(mircoGage);
}
private void UIElement_OnMouseMove(object sender, MouseEventArgs e)
{
if (!isDown)
return;
var vm = viewModel;
var series = vm.SeriesInfos.First(info => info.IsSelected).Series;
var chart = (LiveCharts.Wpf.CartesianChart)sender;
//lets get where the mouse is at our chart
var mouseCoordinate = e.GetPosition(chart);
//now that we know where the mouse is, lets use
//ConverToChartValues extension
//it takes a point in pixes and scales it to our chart current scale/values
var p = chart.ConvertToChartValues(mouseCoordinate);
//var series = chart.Series[0];
var closetsPoint = series.ClosestPointTo(p.X, AxisOrientation.X);
if (closetsPoint == null)
return;
xEnd = closetsPoint.X;
vm.MeasureValuePos = (int)(Math.Min(xBegin, xEnd) * vm.PosOfGrid);
vm.MeasureWidthPos = (int)((Math.Abs(xEnd - xBegin) + 1) * vm.PosOfGrid);
}
private double xBegin;
private double xEnd;
private bool isDown = false;
private void UIElement_MouseDown(object sender, MouseButtonEventArgs e)
{
isDown = true;
var vm = viewModel;
var series = vm.SeriesInfos.First(info => info.IsSelected).Series;
var chart = (LiveCharts.Wpf.CartesianChart)sender;
var mouseCoordinate = e.GetPosition(chart);
var p = chart.ConvertToChartValues(mouseCoordinate);
//var series = chart.Series[0];
var closetsPoint = series.ClosestPointTo(p.X, AxisOrientation.X);
if (closetsPoint == null)
{
isDown = false;
return;
}
xBegin = closetsPoint.X;
vm.MeasureValuePos = (int)(xBegin * vm.PosOfGrid);
}
private void UIElement_MouseUp(object sender, MouseButtonEventArgs e)
{
isDown = false;
var vm = viewModel;
var series = vm.SeriesInfos.First(info => info.IsSelected).Series;
var chart = (LiveCharts.Wpf.CartesianChart)sender;
//lets get where the mouse is at our chart
var mouseCoordinate = e.GetPosition(chart);
//now that we know where the mouse is, lets use
//ConverToChartValues extension
//it takes a point in pixes and scales it to our chart current scale/values
var p = chart.ConvertToChartValues(mouseCoordinate);
//for X in this case we will only highlight the closest point.
//lets use the already defined ClosestPointTo extension
//it will return the closest ChartPoint to a value according to an axis.
//here we get the closest point to p.X according to the X axis
//var series = chart.Series[0];
var closetsPoint = series.ClosestPointTo(p.X, AxisOrientation.X);
if (closetsPoint == null)
return;
xEnd = closetsPoint.X;
vm.MeasureValuePos = (int)(Math.Min(xBegin, xEnd) * vm.PosOfGrid);
vm.MeasureWidthPos = (int)((Math.Abs(xEnd - xBegin) + 1) * vm.PosOfGrid);
}
}
}