wpf - 在 WPF 中创建填充图案

Question

我能够在 WPF 中创建条纹图案，但是如何在 XAML 中创建这样的图案？ WPF 中是否有默认的类似画笔？

Answer 1

您可以使用 VisualBrush 在 XAML 中执行此操作.您只需要为 Path 指定数据值。 ， 例如:

XAML

<Window.Resources>
    <VisualBrush x:Key="MyVisualBrush" TileMode="Tile" Viewport="0,0,15,15" ViewportUnits="Absolute" Viewbox="0,0,15,15" ViewboxUnits="Absolute">
        <VisualBrush.Visual>
            <Grid Background="Black">
                <Path Data="M 0 15 L 15 0" Stroke="Gray" />
                <Path Data="M 0 0 L 15 15" Stroke="Gray" />
            </Grid>
        </VisualBrush.Visual>
    </VisualBrush>
</Window.Resources>

<Grid Background="{StaticResource MyVisualBrush}">
    <Label Content="TEST" Foreground="White" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Grid>

Output



用于转换 Image到矢量图形(路径)使用 Inkscape ，这是免费的，非常有用。有关更多信息，请参阅此链接:

Vectorize Bitmaps to XAML using Potrace and Inkscape

Edit

为了获得更好的性能，您可以 Freeze()您在 PresentationOptions 的帮助下刷牙像这样:

<Window x:Class="MyNamespace.MainWindow"
        xmlns:PresentationOptions="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options" ...>

    <VisualBrush x:Key="MyVisualBrush" PresentationOptions:Freeze="True" ... />

引自 MSDN :

When you no longer need to modify a freezable, freezing it provides performance benefits. If you were to freeze the brush in this example, the graphics system would no longer need to monitor it for changes. The graphics system can also make other optimizations, because it knows the brush won't change.