问题
In an attempt to go around the problem described in this other question: Segoe UI Symbol smiley is sometimes colorful, sometimes not (WP8.1 + XAML), I tried the following: wrapping my Textblock
with a Border
element with rounded-corners (high CornerRadius
). This way I can change the background color of the border and it looks pretty much as if the smiley had a background color itself... almost.
There is still a small gotcha I cannot wrap my head around: the height of the TextBlock seems to be out of my control. The "Segoe UI Symbol" (smiley) I want to display acts as if it had some kind of padding
that prevented the border to fit the icon exactly. I end up with some kind of oval shape around my round smiley... not quite what I had in mind.
I stripped the XAML to its bare essence and played with it in a new blank app (just paste this in a new app, you should see exactly the screenshot below):
<Grid>
<Border Background="Red" Grid.Column="0"
CornerRadius="50" BorderThickness="0"
HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock Text="😠"
FontFamily="Segoe UI Symbol" FontSize="50"
HorizontalAlignment="Center" VerticalAlignment="Center" />
</Border>
</Grid>
This gives you that:
Any idea what I can tweak there?
回答1:
The problem is that the text (emoticon) has not the same height and width. You can do a custom fix by applying a custom style to the textbox and change its padding until you achieve the result you want. It's not a dynamic solution but if the size of the icon is standard this solution i think will work.
First of all create a new style:
<phone:PhoneApplicationPage.Resources>
<Style x:Key="CustomTextBlockStyle" TargetType="TextBlock">
<Setter Property="Padding" Value="10,0,10,3"/>
</Style>
</phone:PhoneApplicationPage.Resources>
Then apply it to the TextBlock
<Grid>
<Border Background="Red" Grid.Column="0"
CornerRadius="50" BorderThickness="0"
HorizontalAlignment="Center" VerticalAlignment="Center">
<TextBlock Text="😠"
FontFamily="Segoe UI Symbol" FontSize="50"
HorizontalAlignment="Center" VerticalAlignment="Center" Style="{StaticResource CustomTextBlockStyle}" />
</Border>
</Grid>
The result:
If you want something like this:
Try to play around with padding and margin too
<Style x:Key="CustomTextBlockStyle" TargetType="TextBlock">
<Setter Property="Margin" Value="-2,-13,-2,-9"/>
<Setter Property="Padding" Value="0,0,0,0"/>
</Style>
来源:https://stackoverflow.com/questions/32726243/border-fail-to-size-to-textblock