321 lines
14 KiB
C#
321 lines
14 KiB
C#
using FileManager_UWP.Model;
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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.Foundation;
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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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/// <summary>
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/// 一个可以自动折叠的标签菜单
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/// </summary>
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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(200));
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private Canvas labelListCanvas;
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private bool _adding_new_label = false;
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private bool _hovering = false, _draging = false;
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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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AllowDrop = true;
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}
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/// <summary>
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/// 监听ItemSource改变
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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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 SetElasticAnimate(Button b, int expanded_position) {
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DoubleAnimation expand_animate = new DoubleAnimation();
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expand_animate.From = null; // labelListCanvas.Children.Count * 22;
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expand_animate.To = expanded_position;
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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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DoubleAnimation collpse_animate = new DoubleAnimation();
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collpse_animate.From = null; // expanded_position;
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collpse_animate.To = labelListCanvas.Children.Count * 20;
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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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}
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private DependencyProperty LabelProperty = DependencyProperty.Register(
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"LabelItem", typeof(LabelItem), typeof(Button), null);
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/// <summary>
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/// 当ItemsSource改变时，绘制标签，注册动画
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/// </summary>
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private void update() {
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Debug.WriteLine("ObservableCollection update");
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var itemsSource = ItemsSource as ObservableCollection<LabelItem>;
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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 (LabelItem label in itemsSource) {
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Button b = new Button();
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b.SetValue(LabelProperty, label);
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b.Content = label.tag;
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b.Background = new SolidColorBrush(label.color);
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b.SetValue(Canvas.LeftProperty, expanded_position);
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b.Style = (Style)genericResourceDictionary["LabelButtonStyle"];
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b.Click += B_Click;
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//b.AddHandler(PointerPressedEvent, new PointerEventHandler(B_PointerPressed), true);
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//b.AddHandler(PointerReleasedEvent, new PointerEventHandler(B_PointerReleased), true);
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InitManipulationTransforms(b);
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SetElasticAnimate(b, expanded_position);
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expanded_position += label.tag.Count() * 14 + 15;
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labelListCanvas.Children.Add(b);
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}
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Button add_button = new Button();
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SetElasticAnimate(add_button, expanded_position);
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add_button.Content = "+";
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add_button.SetValue(Canvas.LeftProperty, expanded_position);
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add_button.Style = (Style)genericResourceDictionary["LabelButtonStyle"];
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add_button.Click += Add_Click;
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DoubleAnimation appear_animate = new DoubleAnimation {
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To = 100,
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Duration = _animate_during
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};
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appear_animate.Completed += Animate_Completed;
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_expand_story_board.Children.Add(appear_animate);
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Storyboard.SetTarget(appear_animate, add_button);
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Storyboard.SetTargetProperty(appear_animate, "Opacity");
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DoubleAnimation disappear_animate = new DoubleAnimation {
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Duration = _animate_during
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};
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// 如果没有标签，则+不自动隐藏
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if (itemsSource.Count > 0)
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disappear_animate.To = 0;
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else
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disappear_animate.To = 100;
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disappear_animate.Completed += Animate_Completed;
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_collpse_story_board.Children.Add(disappear_animate);
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Storyboard.SetTarget(disappear_animate, add_button);
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Storyboard.SetTargetProperty(disappear_animate, "Opacity");
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labelListCanvas.Children.Add(add_button);
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measure();
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LabelListCanvas_PointerExited(null, null);
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}
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//private bool _pressing_label = false;
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//private void B_PointerPressed(object sender, PointerRoutedEventArgs e) {
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// Debug.WriteLine("label pressed");
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// _pressing_label = true;
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//}
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//private void B_PointerReleased(object sender, PointerRoutedEventArgs e) {
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// Debug.WriteLine("label release");
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// _pressing_label = false;
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//}
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private void B_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e) {
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TransformGroup transforms = (sender as Button).RenderTransform as TransformGroup;
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MatrixTransform previousTransform = transforms.Children[0] as MatrixTransform;
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CompositeTransform deltaTransform = transforms.Children[1] as CompositeTransform;
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previousTransform.Matrix = transforms.Value;
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// Get center point for rotation
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Point center = previousTransform.TransformPoint(new Point(e.Position.X, e.Position.Y));
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deltaTransform.CenterX = center.X;
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deltaTransform.CenterY = center.Y;
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// Look at the Delta property of the ManipulationDeltaRoutedEventArgs to retrieve
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// the rotation, scale, X, and Y changes
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deltaTransform.Rotation = e.Delta.Rotation;
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deltaTransform.TranslateX = e.Delta.Translation.X;
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deltaTransform.TranslateY = e.Delta.Translation.Y;
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}
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private void InitManipulationTransforms(Button b) {
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var transforms = new TransformGroup();
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var previousTransform = new MatrixTransform();
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previousTransform.Matrix = Matrix.Identity;
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var deltaTransform = new CompositeTransform();
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transforms.Children.Add(previousTransform);
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transforms.Children.Add(deltaTransform);
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b.RenderTransform = transforms;
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b.ManipulationMode = ManipulationModes.TranslateX | ManipulationModes.TranslateY;
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b.ManipulationDelta += B_ManipulationDelta;
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b.ManipulationStarted += B_ManipulationStarted;
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b.ManipulationCompleted += B_ManipulationCompleted;
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}
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private Point _origin;
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private void B_ManipulationCompleted(object sender, ManipulationCompletedRoutedEventArgs e) {
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Debug.WriteLine("Manipulation finish");
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_draging = false;
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ObservableCollection<LabelItem> itemsSource = ItemsSource as ObservableCollection<LabelItem>;
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itemsSource.Remove((sender as Button).GetValue(LabelProperty) as LabelItem);
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update();
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}
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private void B_ManipulationStarted(object sender, ManipulationStartedRoutedEventArgs e) {
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Debug.WriteLine("Manipulation start");
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_origin = e.Position;
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_draging = true;
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}
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private void B_DragLeave(object sender, DragEventArgs e) {
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var itemsSource = ItemsSource as ObservableCollection<LabelItem>;
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Button b = sender as Button;
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var tag = b.Content as string;
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Debug.WriteLine("Drag Leave " + tag);
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int index = itemsSource.ToList().FindIndex(x => x.tag == tag);
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itemsSource.RemoveAt(index);
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}
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/// <summary>
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/// 点击标签
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void B_Click(object sender, RoutedEventArgs e) {
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Button b = sender as Button;
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Debug.WriteLine(b.Content);
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}
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/// <summary>
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/// 点击新建标签
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void Add_Click(object sender, RoutedEventArgs e) {
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Debug.WriteLine("Click Add Label");
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Button b = sender as Button;
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TextBox textBox = new TextBox();
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textBox.Height = b.ActualHeight;
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textBox.FontSize = b.FontSize;
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textBox.BorderThickness = new Thickness(0);
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textBox.Padding = new Thickness(4, 4, 4, 4);
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textBox.Margin = new Thickness(0, 0, 0, 0);
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textBox.GotFocus += TextBox_GotFocus;
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textBox.LostFocus += TextBox_LostFocus;
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b.Content = textBox;
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}
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private void TextBox_LostFocus(object sender, RoutedEventArgs e) {
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_adding_new_label = false;
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TextBox tb = sender as TextBox;
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if (tb.Text.Count() != 0)
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(ItemsSource as ObservableCollection<LabelItem>).Add(new LabelItem(tb.Text));
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if (!_hovering)
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LabelListCanvas_PointerExited(null, null);
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}
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private void TextBox_GotFocus(object sender, RoutedEventArgs e) {
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_adding_new_label = true;
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}
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/// <summary>
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/// 动画完成
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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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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/// <summary>
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/// 计算控件尺寸
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/// </summary>
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private void measure() {
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Button lb = labelListCanvas.Children.Last() as Button;
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lb.Content = "+";
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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.ActualWidth;
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}
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/// <summary>
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/// 鼠标离开
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void LabelListCanvas_PointerExited(object sender, PointerRoutedEventArgs e) {
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_hovering = false;
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// 正在输入新标签时不折叠
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if (!_adding_new_label && !_draging) {
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_collpse_story_board.Begin();
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for (int i = 0; i < labelListCanvas.Children.Count - 2; i++) {
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Button b = labelListCanvas.Children[i] as Button;
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b.Content = string.Format("{0}...", (b.Content as string)[0]);
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}
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}
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}
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/// <summary>
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/// 鼠标进入
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void LabelListCanvas_PointerEntered(object sender, PointerRoutedEventArgs e) {
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_hovering = true;
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if (!_adding_new_label && !_draging) {
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_expand_story_board.Begin();
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var labels = ItemsSource as ObservableCollection<LabelItem>;
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for (int i = 0; i < labels.Count - 1; i++) {
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Button b = labelListCanvas.Children[i] as Button;
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b.Content = labels[i].tag;
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}
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}
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}
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/// <summary>
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/// 初始化控件
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/// </summary>
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private void init() {
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var itemsSource = ItemsSource as ObservableCollection<LabelItem>;
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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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/// <summary>
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/// 该Control被加载时调用
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/// </summary>
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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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