WPF 缩放控制
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原文地址: http://stackoverflow.com/questions/34422337/
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WPF Zoom control
提问by lata
How to implement zooming in wpf? Creating an application in which user can upload and draw on the map.On using zoom slider, user is not able to draw on the map. Without zoom slider the user is able to draw. Instead of third party controls, is there any way to implement zooming? I tried implementing it and i can see the slider in xaml but when i run it,the slider disappears
如何在wpf中实现缩放？创建一个应用程序，用户可以在其中上传和在地图上绘图。使用缩放滑块时，用户无法在地图上绘图。没有缩放滑块，用户可以绘制。除了第三方控件，有没有办法实现缩放？我尝试实现它，我可以在 xaml 中看到滑块，但是当我运行它时，滑块消失了
enter image description hereAny ideas are greatly appreciated. Thanks a lot.
在此处输入图像描述任何想法都非常感谢。非常感谢。
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="273.333"/>
<ColumnDefinition Width="1026.667"/>
</Grid.ColumnDefinitions>
<Slider x:Name="uiScaleSlider" ToolTip="Determines the UI scale factor." Value="1" Minimum="0.1" Maximum="4" Margin="67,0,-67,-0.333" Grid.ColumnSpan="2"/>
<DockPanel Grid.Column="0" Grid.ColumnSpan="2" LastChildFill="True" Margin="0,0,0,-0.333">
<DockPanel.LayoutTransform>
<ScaleTransform
CenterX="0" CenterY="0"
ScaleX="{Binding ElementName=uiScaleSlider,Path=Value}"
ScaleY="{Binding ElementName=uiScaleSlider,Path=Value}"
/>
</DockPanel.LayoutTransform>
<Canvas x:Name="drawingCanvas" Margin="0,10,85,33">
<Canvas.Background>
<ImageBrush ImageSource="../Images/canvas.png" AlignmentX="Center" AlignmentY="Center" Stretch="Fill"/>
</Canvas.Background>
</Canvas>
</DockPanel>
</Grid>
</ScrollViewer>
<GridSplitter Grid.Row="1" HorizontalAlignment="Stretch" VerticalAlignment="Top" ResizeDirection="Rows" />
</Grid>
回答by d.moncada
The best way to do this is to use a ViewBox. I've described a similar scenario here: Creating a WPF Window that allows zooming and panning
最好的方法是使用ViewBox. 我在这里描述了一个类似的场景：Creating a WPF Window that allowed zooming and panning
