正文

WPF实现窗体中的悬浮按钮

︶ㄣSDDLL学院 メ
SDDLL学院V管理员 / 阅读
0701
这篇文章主要为大家详细介绍了WPF实现窗体中的悬浮按钮，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

这篇文章主要为大家详细介绍了WPF实现窗体中的悬浮按钮，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

WPF实现窗体中的悬浮按钮，按钮可拖动，吸附停靠在窗体边缘。

控件XAML代码：

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
<Button x:Class="SunCreate.Common.Controls.FloatButton"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
       xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
       mc:Ignorable="d"
       d:DesignHeight="300" d:DesignWidth="300"
       Width="50" Height="50" Margin="0"
       HorizontalAlignment="Left" VerticalAlignment="Top"
       x:Name="btn"
       Loaded="btn_Loaded" Click="btn_Click" >
  <Button.Template>
    <ControlTemplate>
      <Grid MouseLeftButtonDown="Border_MouseLeftButtonDown">
        <Border CornerRadius="25" Background="#022938" Opacity="0.2" >
        </Border>
        <Border CornerRadius="20" Width="40" Height="40" Background="#022938" Opacity="0.3" >
        </Border>
        <Border CornerRadius="14" Width="28" Height="28" Background="#b06919" Opacity="0.8" >
        </Border>
      </Grid>
    </ControlTemplate>
  </Button.Template>
</Button>

控件cs代码：

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
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.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
 
namespace SunCreate.Common.Controls
{
  /// <summary>
  /// 悬浮按钮
  /// </summary>
  public partial class FloatButton : Button
  {
    public event EventHandler ClickEvent;
 
    private bool _move = false;
    double _distance = 200;
    double _distanceNew = 5;
    private Point _lastPos;
    private Point _newPos;
    private Point _oldPos;
 
    public FloatButton()
    {
      InitializeComponent();
    }
 
    private void btn_Loaded(object sender, RoutedEventArgs e)
    {
      if (this.Parent != null && this.Parent is FrameworkElement)
      {
        FrameworkElement parent = this.Parent as FrameworkElement;
        double left = parent.ActualWidth - this.ActualWidth - this._distanceNew;
        double top = parent.ActualHeight - this.ActualHeight - this._distanceNew;
        this.Margin = new Thickness(left, top, 0, 0);
      }
    }
 
    private void Border_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
      if (this.Parent != null && this.Parent is FrameworkElement)
      {
        FrameworkElement parent = this.Parent as FrameworkElement;
        _move = true;
        _lastPos = e.GetPosition(parent);
        _oldPos = _lastPos;
 
        parent.PreviewMouseMove += (s, ee) =>
        {
          if (_move)
          {
            Point pos = ee.GetPosition(parent);
            double left = this.Margin.Left + pos.X - this._lastPos.X;
            double top = this.Margin.Top + pos.Y - this._lastPos.Y;
            this.Margin = new Thickness(left, top, 0, 0);
 
            _lastPos = e.GetPosition(parent);
          }
        };
 
        parent.PreviewMouseUp += (s, ee) =>
        {
          if (_move)
          {
            _move = false;
 
            Point pos = ee.GetPosition(parent);
            _newPos = pos;
            double left = this.Margin.Left + pos.X - this._lastPos.X;
            double top = this.Margin.Top + pos.Y - this._lastPos.Y;
            double right = parent.ActualWidth - left - this.ActualWidth;
            double bottom = parent.ActualHeight - top - this.ActualHeight;
 
            if (left < _distance && top < _distance) //左上
            {
              left = this._distanceNew;
              top = this._distanceNew;
            }
            else if (left < _distance && bottom < _distance) //左下
            {
              left = this._distanceNew;
              top = parent.ActualHeight - this.ActualHeight - this._distanceNew;
            }
            else if (right < _distance && top < _distance) //右上
            {
              left = parent.ActualWidth - this.ActualWidth - this._distanceNew;
              top = this._distanceNew;
            }
            else if (right < _distance && bottom < _distance) //右下
            {
              left = parent.ActualWidth - this.ActualWidth - this._distanceNew;
              top = parent.ActualHeight - this.ActualHeight - this._distanceNew;
            }
            else if (left < _distance && top > _distance && bottom > _distance) //左
            {
              left = this._distanceNew;
              top = this.Margin.Top;
            }
            else if (right < _distance && top > _distance && bottom > _distance) //右
            {
              left = parent.ActualWidth - this.ActualWidth - this._distanceNew;
              top = this.Margin.Top;
            }
            else if (top < _distance && left > _distance && right > _distance) //上
            {
              left = this.Margin.Left;
              top = this._distanceNew;
            }
            else if (bottom < _distance && left > _distance && right > _distance) //下
            {
              left = this.Margin.Left;
              top = parent.ActualHeight - this.ActualHeight - this._distanceNew;
            }
 
            ThicknessAnimation marginAnimation = new ThicknessAnimation();
            marginAnimation.From = this.Margin;
            marginAnimation.To = new Thickness(left, top, 0, 0);
            marginAnimation.Duration = TimeSpan.FromMilliseconds(200);
 
            Storyboard story = new Storyboard();
            story.FillBehavior = FillBehavior.Stop;
            story.Children.Add(marginAnimation);
            Storyboard.SetTargetName(marginAnimation, "btn");
            Storyboard.SetTargetProperty(marginAnimation, new PropertyPath("(0)", Border.MarginProperty));
 
            story.Begin(this);
 
            this.Margin = new Thickness(left, top, 0, 0);
          }
        };
      }
    }
 
    private void btn_Click(object sender, RoutedEventArgs e)
    {
      if (_newPos.Equals(_oldPos))
      {
        if (ClickEvent != null)
        {
          ClickEvent(sender, e);
        }
      }
    }
  }
}

如何使用：

?
1
2
3
4
5
6
7
8
9
10
11
12
13
<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:ui="clr-namespace:SunCreate.Common.Controls;assembly=SunCreate.Common.Controls"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="SunCreate.Common.Controls.Demo.MainWindow"
    Title="MainWindow"
    Height="700" Width="1200"
    Background="#ff10498c"
    WindowStartupLocation="CenterScreen">
  <Grid>
    <ui:FloatButton x:Name="floatBtn" ></ui:FloatButton>
  </Grid>
</Window>

效果图：

WPF实现窗体中的悬浮按钮

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持米米素材网。

原文链接：https://www.cnblogs.com/s0611163/p/10002046.html