AIKKEY_WPFWin7/AIK.Views/MenuPages/CommonPage/PercentProgressBar.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace AIK.Views.MenuPages.CommonPage
{
    /// <summary>
    /// PercentProgressBar.xaml 的交互逻辑
    /// </summary>
    public partial class PercentProgressBar : UserControl
    {
        public static readonly DependencyProperty ValueProperty =
            DependencyProperty.Register("Value", typeof(double), typeof(PercentProgressBar),
                new PropertyMetadata(0.0, OnValueChanged));

        public static readonly DependencyProperty MaximumProperty =
            DependencyProperty.Register("Maximum", typeof(double), typeof(PercentProgressBar),
                new PropertyMetadata(100.0, OnValueChanged));
        public double Value
        {
            get => (double)GetValue(ValueProperty);
            set => SetValue(ValueProperty, value);
        }

        public double Maximum
        {
            get => (double)GetValue(MaximumProperty);
            set => SetValue(MaximumProperty, value);
        }

        public new Brush Foreground
        {
            get => (Brush)GetValue(ForegroundProperty);
            set => SetValue(ForegroundProperty, value);
        }

        public new Brush Background
        {
            get => (Brush)GetValue(BackgroundProperty);
            set => SetValue(BackgroundProperty, value);
        }
        public PercentProgressBar()
        {
            InitializeComponent();
        }
        private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            if (d is PercentProgressBar bar)
                bar.UpdateIndicator();
        }

        private void UpdateIndicator()
        {
            if (Maximum <= 0 || RootGrid.ActualWidth <= 0) return;

            var percent = Value / Maximum;
            Indicator.Width = RootGrid.ActualWidth * percent;
            PercentText.Text = $"{percent * 100:F0}%";
        }

        protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo)
        {
            base.OnRenderSizeChanged(sizeInfo);
            UpdateIndicator();
        }
    }
}