在 WPF 中创建填充图案 [英] Create a hatch pattern in WPF

问题描述

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 中是否有默认类似的画笔?

解决方案

您可以在 XAML 中使用 ，这是免费的并且非常有用.有关更多信息，请参阅此链接:

使用 Potrace 将位图矢量化为 XAML和 Inkscape

编辑

为了获得更好的性能，您可以 Freeze() 在 PresentationOptions 像这样:

引用自 MSDN:

<块引用>

当您不再需要修改 freezable 时，冻结它可以提供性能优势.如果您在本例中冻结画笔，图形系统将不再需要监视它的变化.图形系统还可以进行其他优化，因为它知道画笔不会改变.

I was able to create stripe patterns in WPF, but how can I create a pattern like this in XAML? Is there a default similar brush for this in WPF?

解决方案

You can do it in XAML using VisualBrush. You only need to specify Data values for the Path, for example:

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

For converting Image to Vector graphics (Path) use Inkscape, which is free and very useful. For more information see this link:

Vectorize Bitmaps to XAML using Potrace and Inkscape

Edit

For better performance, you may Freeze() you Brushes with help of PresentationOptions like this:

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

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

Quote from 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.

这篇关于在 WPF 中创建填充图案的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！