跳到主要内容
登录

github/tai

公开

Tai · Windows 软件与网站使用时长统计。上游 Planshit/Tai 的源码镜像，非灵栈原创；MIT 许可。来源：https://github.com/Planshit/Tai 。本次为手动同步，暂不提供安装包。

浏览文件
main

分支

标签

Expander.cs

187 行 · 6.5 KB历史下载
1using System;
2using System.Collections.Generic;
3using System.Diagnostics;
4using System.Linq;
5using System.Text;
6using System.Threading.Tasks;
7using System.Windows;
8using System.Windows.Controls;
9using System.Windows.Input;
10using System.Windows.Media.Animation;
11using UI.Controls.Button;
12using UI.Controls.Input;
13using UI.Controls.SettingPanel;
14
15namespace UI.Controls.Expander
16{
17 public class Expander : System.Windows.Controls.Expander
18 {
19 /// <summary>
20 /// 圆角半径
21 /// </summary>
22 public CornerRadius CornerRadius
23 {
24 get { return (CornerRadius)GetValue(CornerRadiusProperty); }
25 set { SetValue(CornerRadiusProperty, value); }
26 }
27 public static readonly DependencyProperty CornerRadiusProperty =
28 DependencyProperty.Register("CornerRadius", typeof(CornerRadius), typeof(Expander));
29
30 public Command ExpanderCommand { get; set; }
31 private Border HeaderBorder_;
32 private IconButton ExpBtn_;
33 // 内容容器高度隐藏容器,用于辅助显示隐藏动画
34 private Canvas ContentHeightCanvas_;
35 // 内容部分容器边框,用于设置下移动画
36 private Border ContentBorder_;
37 private StackPanel ContentStackPanel_;
38
39
40 private Storyboard storyboard;
41 private DoubleAnimation expandTTFDoubleAnimation;
42 private DoubleAnimation expandHeightDoubleAnimation;
43
44 public Expander()
45 {
46 DefaultStyleKey = typeof(Expander);
47 ExpanderCommand = new Command(new Action<object>(OnExpanderCommand));
48 Loaded += Expander_Loaded;
49 }
50
51 private void Expander_Loaded(object sender, RoutedEventArgs e)
52 {
53 ContentHeightCanvas_.SetValue(HeightProperty, ContentStackPanel_.ActualHeight);
54 ContentStackPanel_.SizeChanged += ContentStackPanel__SizeChanged;
55 //OnExpand(false);
56 }
57
58 private void CreateAnimations()
59 {
60 storyboard = new Storyboard();
61 expandTTFDoubleAnimation = new DoubleAnimation();
62 expandTTFDoubleAnimation.EasingFunction = new CubicEase() { EasingMode = EasingMode.EaseOut };
63 Storyboard.SetTarget(expandTTFDoubleAnimation, ContentBorder_);
64 Storyboard.SetTargetProperty(expandTTFDoubleAnimation, new PropertyPath("(Border.RenderTransform).(TranslateTransform.Y)"));
65
66 expandHeightDoubleAnimation = new DoubleAnimation();
67 expandHeightDoubleAnimation.EasingFunction = new CubicEase() { EasingMode = EasingMode.EaseOut };
68 Storyboard.SetTarget(expandHeightDoubleAnimation, ContentHeightCanvas_);
69 Storyboard.SetTargetProperty(expandHeightDoubleAnimation, new PropertyPath("(Canvas.Height)"));
70
71
72 storyboard.Children.Add(expandTTFDoubleAnimation);
73 storyboard.Children.Add(expandHeightDoubleAnimation);
74
75 storyboard.Completed += Storyboard_Completed;
76 }
77
78 private void Storyboard_Completed(object sender, EventArgs e)
79 {
80 ContentStackPanel_.SizeChanged -= ContentStackPanel__SizeChanged;
81
82 if (IsExpanded)
83 {
84 ContentStackPanel_.SizeChanged += ContentStackPanel__SizeChanged;
85 }
86 }
87
88 private void ContentStackPanel__SizeChanged(object sender, SizeChangedEventArgs e)
89 {
90 OnExpand(false);
91 }
92
93 private void OnExpanderCommand(object obj)
94 {
95 IsExpanded = !IsExpanded;
96 OnExpand();
97 }
98
99 private void OnExpand(bool isAnimation = true)
100 {
101 //ContentBorder_.SizeChanged -= ContentBorder__SizeChanged;
102 if (IsExpanded)
103 {
104 expandTTFDoubleAnimation.From = -ContentStackPanel_.ActualHeight;
105 expandTTFDoubleAnimation.To = 0;
106
107 expandHeightDoubleAnimation.From = 0;
108 expandHeightDoubleAnimation.To = ContentStackPanel_.ActualHeight;
109 }
110 else
111 {
112 expandTTFDoubleAnimation.From = 0;
113 expandTTFDoubleAnimation.To = -ContentStackPanel_.ActualHeight;
114
115 expandHeightDoubleAnimation.From = ContentStackPanel_.ActualHeight;
116 expandHeightDoubleAnimation.To = 0;
117 }
118
119 if (!isAnimation)
120 {
121 expandTTFDoubleAnimation.Duration = new Duration(TimeSpan.Zero);
122 expandHeightDoubleAnimation.Duration = new Duration(TimeSpan.Zero);
123 }
124 else
125 {
126 expandTTFDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(.3));
127 expandHeightDoubleAnimation.Duration = new Duration(TimeSpan.FromSeconds(.25));
128 }
129 storyboard.Begin();
130 }
131
132 public override void OnApplyTemplate()
133 {
134 base.OnApplyTemplate();
135 HeaderBorder_ = GetTemplateChild("HeaderBorder") as Border;
136 ExpBtn_ = GetTemplateChild("ExpBtn") as IconButton;
137 ContentHeightCanvas_ = GetTemplateChild("ContentHeight") as Canvas;
138 ContentBorder_ = GetTemplateChild("Content") as Border;
139 ContentStackPanel_ = GetTemplateChild("ContentStackPanel") as StackPanel;
140
141 CreateAnimations();
142 HandleEvent();
143 }
144
145 private void HandleEvent()
146 {
147 if (HeaderBorder_ != null)
148 {
149 HeaderBorder_.MouseEnter += HeaderBorder__MouseEnter;
150 HeaderBorder_.MouseLeave += HeaderBorder__MouseLeave;
151 HeaderBorder_.MouseLeftButtonDown += HeaderBorder__MouseLeftButtonDown;
152 HeaderBorder_.MouseLeftButtonUp += HeaderBorder__MouseLeftButtonUp;
153 }
154
155 if(ExpBtn_!= null)
156 {
157 ExpBtn_.MouseLeftButtonUp += ExpBtn__MouseLeftButtonUp; ;
158 }
159
160 }
161
162 private void ExpBtn__MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
163 {
164 e.Handled = true;
165 }
166
167 private void HeaderBorder__MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
168 {
169 ExpBtn_.RaiseEvent(e);
170 }
171
172 private void HeaderBorder__MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
173 {
174 ExpBtn_.RaiseEvent(e);
175 }
176
177 private void HeaderBorder__MouseLeave(object sender, MouseEventArgs e)
178 {
179 ExpBtn_.RaiseEvent(e);
180 }
181
182 private void HeaderBorder__MouseEnter(object sender, System.Windows.Input.MouseEventArgs e)
183 {
184 ExpBtn_.RaiseEvent(e);
185 }
186 }
187}