覆盖ToggleButton样式

Question

我的窗口中有一个ToggleButton,并在我的ResourceDictionary中设置样式.它在ResourceDictionary中的原因是因为我很快就会有几个或更多的ToggleButton具有相同的外观.

<Style x:Key="Standardbutton" TargetType="{x:Type ToggleButton}">
    <Setter Property="FontSize" Value="18" />
    <Setter Property="Foreground" Value="White" />
    <Setter Property="Background">
        <Setter.Value>
            <ImageBrush ImageSource="Resources/Standard_Button_Normal.png" />
        </Setter.Value>
    </Setter>
    <Setter Property="Height" Value="56" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="ToggleButton">
                <Border Name="border" BorderThickness="0" Padding="0,0" BorderBrush="DarkGray" CornerRadius="0" Background="{TemplateBinding Background}">
                    <ContentPresenter HorizontalAlignment="Left" VerticalAlignment="Center" Name="content" Margin="15,0,0,0"/>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsChecked" Value="True">
                        <Setter Property="Background">
                            <Setter.Value>
                                <ImageBrush ImageSource="Resources/Standard_Button_Pressed.png" />
                            </Setter.Value>
                        </Setter>
                        <Setter Property="Foreground">
                            <Setter.Value>
                                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                                    <GradientStop Color="#FFF9CE7B" Offset="0"/>
                                    <GradientStop Color="#FFE88C41" Offset="1"/>
                                </LinearGradientBrush>
                            </Setter.Value>
                        </Setter>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

现在这个ToggleButton样式有一个默认背景,当"IsChecked"为真时,它将有不同的背景(正如你在我上面的XAML代码中看到的那样).

现在这些切换按钮必须有图标+文字组合,就像我在这里做的那样(抱歉我的蹩脚XAML代码)

<ToggleButton Style="{DynamicResource Standardbutton}" Margin="0,0,0,4">
    <StackPanel Orientation="Horizontal">
        <Image Source="Resources/scan_26x26.png" />
        <TextBlock Text="Scan"/>
    </StackPanel>
</ToggleButton>

问题是,如果选中ToggleButton(IsChecked = True),我怎么能有一个不同的图标？

以下是一些可能有助于您理解问题的图像

普通ToggleButton样式

IsChecked =真实风格

我的设计目标是在IsChecked = True时使用不同的图标

Answer 1

将两个图像添加到控件模板,并将其Visibility属性绑定到IsChecked属性(使用an IValueConverter将true/false转换为适当的Visibility枚举值).

<ToggleButton Style="{DynamicResource Standardbutton}" Margin="0,0,0,4">
    <StackPanel Orientation="Horizontal">
        <Image Source="Resources/scan_26x26.png" 
               Visibility="{Binding 
                  RelativeSource={RelativeSource AncestorType=ToggleButton},
                  Path=IsChecked,
                  Converter={StaticResource BoolToVisibleConverter}}" />
        <Image Source="Resources/anotherimage.png" 
                  Visibility="{Binding 
                     RelativeSource={RelativeSource AncestorType=ToggleButton},
                     Path=IsChecked,
                     Converter={StaticResource BoolToCollapsedConverter}}" />
        <TextBlock Text="Scan"/>
    </StackPanel>
</ToggleButton>

我用了两个转换器BoolToVisibleConverter和BoolToCollapsedConverter,但你也可以使用ConverterParameter来完成同样的事情.