How to scale all elements drawn on the canvas?

Question

WPF

Hello. I am writing a desktop application in C# using WPF. I have canvas:

<Canvas DockPanel.Dock="Left" RenderTransformOrigin="0.5, 0.5">
      <Canvas.RenderTransform>
           <ScaleTransform ScaleY="-1" />
      </Canvas.RenderTransform>
</Canvas>

And I want all the elements that will be drawn on it to be drawn 2 times smaller. Is that possible? Maybe you need to set the DPI or something like that?