Question

我的 colorPalette.xaml 文件中有以下颜色，我很想知道......

我可以通过编程方式在资源字典中循环显示颜色并反转颜色值吗？

类似于在photoshop中拍摄图像并添加反转滤镜。我问，因为我不想制作一个重复的xaml文件，我手动反转颜色。我认为这是一个更具程序性的解决方案。

<Color x:Key="Accent01">#1d7b87</Color>
<Color x:Key="Accent02">#28aabc</Color>

<Color x:Key="ColorWhite">White</Color>
<Color x:Key="ColorBlack">Black</Color>

<Color x:Key="Color01">#e0e0e0</Color>
<Color x:Key="Color02">#c3c5c7</Color>
<Color x:Key="Color03">#a6a9ad</Color> 
<Color x:Key="Color04">#8b8f94</Color>
<Color x:Key="Color05">#71757a</Color>
<Color x:Key="Color06">#585c61</Color>
<Color x:Key="Color07">#404347</Color>
<Color x:Key="Color08">#292b2e</Color>
<Color x:Key="Color09">#1e1f21</Color>
<Color x:Key="Color10">#121314</Color>

Answer 1

加载目录后，你可以循环它的项目并通过使用键更改它们的属性它应该是这样的：

foreach(object keyy in RescourcesDir.Keys)
{
    //get the object and it's value
    object val = RescourcesDir[keyy];
    //change it's value ...
    RescourcesDir[keyy] = somevalue;
}

try to take a look at this thread it may help you getting your rescourcesdirectory

Answer 2

如果你不介意改变价值观，那么艾哈迈德的解决方案就很棒了。但是如果你想保持原始值和有倒置版本呢？

假设您有一个名为 Converters 的文件夹，并在其中创建以下两个IValueConverter类：

将System.Windows.Media.Color转换为System.Windows.Media.SolidColorBrush的基类：

using System;
using System.Globalization;
using System.Windows.Data;
using System.Windows.Media;

namespace WPFTest.Converters
{
  public class ColorToBrush : IValueConverter
  {
    public virtual object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
      return value is Color ? new SolidColorBrush((Color)value) : Brushes.Black;
    }

    public virtual object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
      throw new NotImplementedException();
    }
  }
}

用于反转颜色的继承类 - using any of these methods - 然后将其转换为画笔：

using System;
using System.Globalization;
using System.Windows.Media;

namespace WPFTest.Converters
{
  public class InvertColorToBrush : ColorToBrush
  {
    public override object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
      if (value is Color)
      {
        Color color = (Color)value;
        int iCol = ((color.A << 24) | (color.R << 16) | (color.G << 8) | color.B) ^ 0xffffff;
        Color inverted = Color.FromArgb((byte)(iCol >> 24),
                                        (byte)(iCol >> 16),
                                        (byte)(iCol >> 8),
                                        (byte)(iCol));

        return base.Convert(inverted, targetType, parameter, culture);
      }
      else
      {
        return Brushes.Black;
      }
    }

    public override object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
      throw new NotImplementedException();
    }
  }
}

注意：灰度颜色的反转不那么引人注目，所以对于这个例子我添加了：

<Color x:Key="Blue">#0000ff</Color>
<Color x:Key="Yellow">#ffff00</Color>

然后在xaml中添加你的引用：

xmlns:converters="clr-namespace:WPFTest.Converters"

声明你的钥匙：

<converters:ColorToBrush x:Key="BrushColor" />
<converters:InvertColorToBrush x:Key="BrushInvertColor" />

用法：

<Label
  Content="COLOR TEST"
  Background="{Binding Converter={StaticResource BrushColor}, Mode=OneWay, Source={StaticResource Blue}}"
  Foreground="{Binding Converter={StaticResource BrushColor}, Mode=OneWay, Source={StaticResource Yellow}}"/>

<Label
  Content="COLOR INVERT TEST"
  Background="{Binding Converter={StaticResource BrushInvertColor}, Mode=OneWay, Source={StaticResource Blue}}"
  Foreground="{Binding Converter={StaticResource BrushInvertColor}, Mode=OneWay, Source={StaticResource Yellow}}"/>

以编程方式反转静态资源字典颜色wpf

2 个答案: