130 lines
5.6 KiB
C#
130 lines
5.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Diagnostics;
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using System.Linq;
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using System.Runtime.InteropServices.WindowsRuntime;
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using Windows.UI.Xaml;
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using Windows.UI.Xaml.Controls;
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using Windows.UI.Xaml.Data;
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using Windows.UI.Xaml.Documents;
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using Windows.UI.Xaml.Input;
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using Windows.UI.Xaml.Markup;
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using Windows.UI.Xaml.Media;
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using Windows.UI.Xaml.Media.Animation;
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// The Templated Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234235
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namespace FileManager_UWP.Controls {
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public class LabelListControl: ItemsControl {
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//private int _collpse_distance = 22;
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//private List<int> _expanded_position = new List<int>();
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private Storyboard _collpse_story_board = new Storyboard();
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private Storyboard _expand_story_board = new Storyboard();
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private Duration _animate_during = new Duration(TimeSpan.FromMilliseconds(500));
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private int _status = 0; // 0 展开， 1 动画， 2 折叠
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private double _width, _height;
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private Canvas labelListCanvas;
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private ResourceDictionary genericResourceDictionary;
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public LabelListControl() {
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this.DefaultStyleKey = typeof(LabelListControl);
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var uri = new Uri("ms-appx:///Controls/LabelListControl.xaml");
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genericResourceDictionary = new ResourceDictionary();
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Application.LoadComponent(genericResourceDictionary, uri);
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}
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private void ItemsSource_CollectionChanged(object sender,
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System.Collections.Specialized.NotifyCollectionChangedEventArgs e) {
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update();
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}
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private void update() {
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//TextBlock textBlock = (TextBlock)GetTemplateChild("LabelTextBlock");
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//textBlock.Text = "测试自定义控件\n";
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//listView.ItemsSource = ItemsSource;
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var itemsSource = ItemsSource as ObservableCollection<string>;
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//textBlock.Text += itemsSource.Count().ToString();
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//labelListCanvas.Children.Count;
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labelListCanvas.Children.Clear();
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_collpse_story_board.Stop();
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_collpse_story_board.Children.Clear();
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_expand_story_board.Stop();
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_expand_story_board.Children.Clear();
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int expanded_position = 0;
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foreach (string label in itemsSource) {
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Button b = new Button();
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b.Content = label;
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//b.SetValue(Canvas.LeftProperty, labelListCanvas.Children.Count * _collpse_distance);
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b.SetValue(Canvas.LeftProperty, expanded_position);
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b.Style = (Style)genericResourceDictionary["LabelButtonStyle"];
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DoubleAnimation collpse_animate = new DoubleAnimation();
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collpse_animate.From = labelListCanvas.Children.Count * 22;
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collpse_animate.To = expanded_position;
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collpse_animate.Duration = _animate_during;
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collpse_animate.Completed += Animate_Completed;
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_collpse_story_board.Children.Add(collpse_animate);
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Storyboard.SetTarget(collpse_animate, b);
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Storyboard.SetTargetProperty(collpse_animate, "(Canvas.Left)");
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DoubleAnimation expand_animate = new DoubleAnimation();
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expand_animate.From = collpse_animate.To;
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expand_animate.To = collpse_animate.From;
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expand_animate.Duration = _animate_during;
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expand_animate.Completed += Animate_Completed;
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_expand_story_board.Children.Add(expand_animate);
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Storyboard.SetTarget(expand_animate, b);
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Storyboard.SetTargetProperty(expand_animate, "(Canvas.Left)");
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expanded_position += label.Count() * 14 + 20;
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labelListCanvas.Children.Add(b);
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}
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}
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private void Animate_Completed(object sender, object e) {
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measure();
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}
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private void measure() {
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Button lb = labelListCanvas.Children.Last() as Button;
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labelListCanvas.Height = lb.ActualHeight;
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double left = (double)lb.GetValue(Canvas.LeftProperty);
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labelListCanvas.Width = left + lb.ActualHeight;
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}
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private void LabelListCanvas_PointerExited(object sender, PointerRoutedEventArgs e) {
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_expand_story_board.Begin();
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Debug.WriteLine(labelListCanvas.Width.ToString() + "," + labelListCanvas.Height.ToString());
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}
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private void LabelListCanvas_PointerEntered(object sender, PointerRoutedEventArgs e) {
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_collpse_story_board.Begin();
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//labelListCanvas.Width = labelListCanvas.ActualWidth;
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//labelListCanvas.Height = 20;
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Debug.WriteLine(labelListCanvas.Width.ToString() + "," + labelListCanvas.Height.ToString());
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}
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private void init() {
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var itemsSource = ItemsSource as ObservableCollection<string>;
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itemsSource.CollectionChanged += ItemsSource_CollectionChanged;
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Button labelListButton = (Button)GetTemplateChild("LabelListPresenter");
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labelListButton.PointerEntered += LabelListCanvas_PointerEntered;
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labelListButton.PointerExited += LabelListCanvas_PointerExited;
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labelListCanvas = (Canvas)GetTemplateChild("LabelListCanvas");
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//TextBlock textBlock = (TextBlock)GetTemplateChild("LabelTextBlock");
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//textBlock.Text = "测试自定义控件\nINIT";
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}
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protected override void OnApplyTemplate() {
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init();
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update();
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}
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}
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}
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