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https://gitee.com/akwkevin/aistudio.-wpf.-diagram
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项目结构调整
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艾竹
187
Others/Live-Charts-master/UwpView/VisualElement.cs
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187
Others/Live-Charts-master/UwpView/VisualElement.cs
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//The MIT License(MIT)
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//Copyright(c) 2016 Alberto Rodriguez & LiveCharts Contributors
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//Permission is hereby granted, free of charge, to any person obtaining a copy
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//of this software and associated documentation files (the "Software"), to deal
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//in the Software without restriction, including without limitation the rights
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//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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//copies of the Software, and to permit persons to whom the Software is
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//furnished to do so, subject to the following conditions:
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//The above copyright notice and this permission notice shall be included in all
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//copies or substantial portions of the Software.
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//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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//SOFTWARE.
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using System;
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using Windows.UI.Xaml;
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using Windows.UI.Xaml.Controls;
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using LiveCharts.Charts;
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using LiveCharts.Definitions.Charts;
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using LiveCharts.Dtos;
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using LiveCharts.Uwp.Charts.Base;
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using LiveCharts.Uwp.Components;
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namespace LiveCharts.Uwp
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{
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/// <summary>
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/// Defines a visual element, a visual element is a UI element that is placed and scaled in the chart.
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/// </summary>
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public class VisualElement : FrameworkElement, ICartesianVisualElement
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{
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private ChartCore _owner;
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// ReSharper disable once InconsistentNaming
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/// <summary>
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/// Gets or sets the user interface element.
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/// </summary>
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public FrameworkElement UIElement { get; set; }
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/// <summary>
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/// Gets or sets the index of the axis in X that owns the element, the axis position must exist.
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/// </summary>
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public int AxisX { get; set; }
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/// <summary>
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/// Gets or sets the index of the axis in Y that owns the element, the axis position must exist.
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/// </summary>
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public int AxisY { get; set; }
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/// <summary>
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/// The x property
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/// </summary>
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public static readonly DependencyProperty XProperty = DependencyProperty.Register(
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"X", typeof (double), typeof (VisualElement),
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new PropertyMetadata(default(double), PropertyChangedCallback));
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/// <summary>
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/// Gets or sets the X value of the UiElement
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/// </summary>
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public double X
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{
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get { return (double) GetValue(XProperty); }
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set { SetValue(XProperty, value); }
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}
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/// <summary>
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/// The y property
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/// </summary>
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public static readonly DependencyProperty YProperty = DependencyProperty.Register(
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"Y", typeof (double), typeof (VisualElement),
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new PropertyMetadata(default(double), PropertyChangedCallback));
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/// <summary>
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/// Gets or sets the Y value of the UiElement
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/// </summary>
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public double Y
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{
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get { return (double) GetValue(YProperty); }
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set { SetValue(YProperty, value); }
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}
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/// <summary>
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/// Adds the or move.
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/// </summary>
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/// <param name="chart">The chart.</param>
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/// <exception cref="System.ArgumentOutOfRangeException">
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/// </exception>
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public void AddOrMove(ChartCore chart)
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{
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if (chart?.AxisX == null || chart?.AxisY == null || UIElement == null) return;
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if (UIElement.Parent == null)
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{
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chart.View.AddToDrawMargin(UIElement);
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Canvas.SetZIndex(UIElement, 1000);
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}
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var coordinate = new CorePoint(ChartFunctions.ToDrawMargin(X, AxisOrientation.X, chart, AxisX),
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ChartFunctions.ToDrawMargin(Y, AxisOrientation.Y, chart, AxisY));
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var uwpChart = (CartesianChart) chart.View;
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var uw = new CorePoint(
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uwpChart.AxisX[AxisX].Model.EvaluatesUnitWidth
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? ChartFunctions.GetUnitWidth(AxisOrientation.X, chart, AxisX)/2
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: 0,
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uwpChart.AxisY[AxisY].Model.EvaluatesUnitWidth
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? ChartFunctions.GetUnitWidth(AxisOrientation.Y, chart, AxisY)/2
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: 0);
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coordinate += uw;
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UIElement.UpdateLayout();
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switch (VerticalAlignment)
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{
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case VerticalAlignment.Top:
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coordinate = new CorePoint(coordinate.X, coordinate.Y - UIElement.ActualHeight);
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break;
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case VerticalAlignment.Center:
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coordinate = new CorePoint(coordinate.X, coordinate.Y - UIElement.ActualHeight / 2);
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break;
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case VerticalAlignment.Bottom:
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coordinate = new CorePoint(coordinate.X, coordinate.Y);
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break;
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case VerticalAlignment.Stretch:
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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switch (HorizontalAlignment)
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{
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case HorizontalAlignment.Left:
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coordinate = new CorePoint(coordinate.X - UIElement.ActualWidth, coordinate.Y);
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break;
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case HorizontalAlignment.Center:
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coordinate = new CorePoint(coordinate.X - UIElement.ActualWidth / 2, coordinate.Y);
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break;
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case HorizontalAlignment.Right:
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coordinate = new CorePoint(coordinate.X, coordinate.Y);
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break;
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case HorizontalAlignment.Stretch:
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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if (chart.View.DisableAnimations)
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{
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Canvas.SetLeft(UIElement, coordinate.X);
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Canvas.SetTop(UIElement, coordinate.Y);
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}
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else
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{
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if (double.IsNaN(Canvas.GetLeft(UIElement)))
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{
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Canvas.SetLeft(UIElement, coordinate.X);
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Canvas.SetTop(UIElement, coordinate.Y);
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}
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var x = AnimationsHelper.CreateDouble(coordinate.X, uwpChart.AnimationsSpeed, "(Canvas.Left)");
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var y = AnimationsHelper.CreateDouble(coordinate.Y, uwpChart.AnimationsSpeed, "(Canvas.Top)");
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AnimationsHelper.CreateStoryBoardAndBegin(UIElement, x, y);
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}
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_owner = chart;
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}
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/// <summary>
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/// Removes the specified chart.
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/// </summary>
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/// <param name="chart">The chart.</param>
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public void Remove(ChartCore chart)
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{
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chart.View.RemoveFromView(UIElement);
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}
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private static void PropertyChangedCallback(DependencyObject dependencyObject,
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DependencyPropertyChangedEventArgs dependencyPropertyChangedEventArgs)
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{
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var element = (VisualElement) dependencyObject;
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if (element._owner != null) element.AddOrMove(element._owner);
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}
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}
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}
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