How can i set some text as subscript/superscript in FormattedText in wpf
问题:
回答1:
You use Typography.Variants:
<TextBlock>
<Run>Normal Text</Run>
<Run Typography.Variants="Superscript">Superscript Text</Run>
<Run Typography.Variants="Subscript">Subscript Text</Run>
</TextBlock>
回答2:
You can use something like <TextBlock>5x<Run BaselineAlignment="Superscript">4</Run> + 4</TextBlock>
.
However, as far as I know, you will have to reduce the font-size yourself.
回答3:
I used a layout transform, because Typography.Variants
often doesn't work:
<TextBlock Text="MyAmazingProduct"/>
<TextBlock Text="TM">
<TextBlock.LayoutTransform>
<!-- Typography.Variants="Superscript" didn't work -->
<TransformGroup>
<ScaleTransform ScaleX=".75" ScaleY=".75"/>
<TranslateTransform Y="-5"/>
</TransformGroup>
</TextBlock.LayoutTransform>
</TextBlock>
<TextBlock Text="{Binding Path=Version, StringFormat={} v{0}}"/>
The advantage of using a LayoutTransform
is that it is insensitive to the fontsize. If the fontsize is changed afterwards, this superscript works where explicit FontSize setting breaks.
回答4:
It's interesting to note that for some characters (m2, m3, etc) a superscript is not needed, but the unicode character can be used. For example:
<Run Text=" m³" />
This would show m3.
回答5:
I don't know if you need this to work with FormattedText specifically, or you mean derivations of Inline, but the following will work on Inlines, even if Typography.Variants="Superscript" fails to work.
TextRange selection = new TextRange(document.ContentStart, document.ContentEnd);
selection.ApplyPropertyValue(Inline.BaselineAlignmentProperty, BaselineAlignment.Superscript);
Hope it helps!
回答6:
Typography.Variants works only for open type fonts. If you dont like your superscripts/subscripts going outside the height of actual text then you can use something like the following:
<StackPanel Orientation="Horizontal">
<TextBlock FontSize="10" Margin="0,5,0,0">1</TextBlock>
<TextBlock FontSize="30">H</TextBlock>
<TextBlock FontSize="10" Margin="0,20,0,0">2</TextBlock>
</StackPanel>
回答7:
Setting for superscript works fine with the following code:
<TextBlock Text="(cm" />
<TextBlock ><Span BaselineAlignment="Top" FontSize="8">2</Span></TextBlock>
<TextBlock Text=")" />
Setting the Baseallignment for subscript in the Span tag did not work for me. I tried the following code and it worked fine.
<TextBlock Text="H" />
<TextBlock Text="2" Margin="-2,0,-2,0" TextBlock.LineHeight="3" >
<TextBlock Text="O" />
回答8:
This is the only thing that worked for me. It also gives you more control over the alignment and font size.
<TextBlock Grid.Row="17">
3 x 3<Run FontSize="6pt" BaselineAlignment="TextTop">2</Run>)
</TextBlock>