Commands and Keyboard

ZoomBorder is designed to work both with direct input and with command surfaces such as toolbars, menus, and keyboard shortcuts.

Built-In Commands

The main command properties are:

ZoomInCommand
ZoomOutCommand
ResetCommand
FitCommand
FillCommand
UniformCommand
UniformToFillCommand
NavigateBackCommand
NavigateForwardCommand
ToggleStretchCommand

Bind them directly:

<StackPanel>
  <Button Content="Zoom In" Command="{Binding #ZoomBorder.ZoomInCommand}" />
  <Button Content="Zoom Out" Command="{Binding #ZoomBorder.ZoomOutCommand}" />
  <Button Content="Reset" Command="{Binding #ZoomBorder.ResetCommand}" />
  <Button Content="Back" Command="{Binding #ZoomBorder.NavigateBackCommand}" />
</StackPanel>

Default Keyboard Shortcuts

When EnableKeyboardNavigation is enabled:

arrow keys pan
+ and = zoom in
- zoom out
Ctrl+0 resets the view
Home fits content to the viewport
Ctrl+Left and Ctrl+Right navigate history

Practical Guidance

Keep Focusable="True" on the control if you rely on keyboard input.
Prefer command bindings for toolbar buttons instead of reimplementing the same method calls in code-behind.
If you need custom keyboard behavior, handle key events externally and call methods such as ZoomIn(...), ResetMatrix(...), or CenterOn(...).