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
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Data;
namespace FLY.ControlLibrary.Converter
{
/// <summary>
/// 3个输入,
/// [0]比例分子;
/// [1]比例分母;
/// [2]控件最大长度
/// </summary>
public class RatioConverter: IMultiValueConverter
{
#region IMultiValueConverter 成员
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (values.Length == 3 && (values[0] is int) && (values[1] is int) && (values[2] is double))//必须要检查，不然 界面生成器 会错误，提示转换异常
{
double ratio ;
int value = (int)values[0];
if (value == 99999998)
value = 0;
int max = (int)values[1];
double ActualWidth = (double)values[2];
if(max <=0)
ratio = 0;
else
ratio = (double)value / max;
if (ratio < 0)
ratio = 0;
else if (ratio > 1)
ratio = 1;
return ActualWidth * ratio;
}
else
{
return 100;
}
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
return null;
}
#endregion
}
public class RatioConverter_TimeSpan : IMultiValueConverter
{
#region IMultiValueConverter 成员
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
if (values.Length == 3 && (values[0] is TimeSpan) && (values[1] is TimeSpan) && (values[2] is double))//必须要检查，不然 界面生成器 会错误，提示转换异常
{
double ratio;
TimeSpan v = (TimeSpan)values[0];
TimeSpan max = (TimeSpan)values[1];
double ActualWidth = (double)values[2];
if (max.TotalSeconds <= 0)
ratio = 0;
else
ratio = v.TotalSeconds / max.TotalSeconds;
if (ratio < 0)
ratio = 0;
else if (ratio > 1)
ratio = 1;
return ActualWidth * ratio;
}
else
{
return 100;
}
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
return null;
}
#endregion
}
}