Tips and Tricks¶
Visibility and Transform¶
Visibility and Transform are two universal behaviors in Pencil that can be applied to any type of object:
<Visibility>...</Visibility>
<Transform>...</Transform>
Forced dependencies¶
Upon changes being made to a specific property, all elements that have at least
one behavior referring to that property will be invalidated and the behavior
code will be executed. In some special cases, you may want a specific behavior
to be executed when a specific property changes even when that property is not
explicitly referenced. In this case, add a comment with the format //depends
$propertyName
to the behavior concerned.
<For ref="text">
<TextContent>new PlainText("Hello World")</TextContent>
<Fill>Color.fromString("#000000ff")</Fill>
<Font>new Font()</Font>
<BoxFit>
<Arg>new Bound(0, 0, 100, 12) //depends $textColor</Arg>
<Arg>new Alignment(0, 1)</Arg>
</BoxFit>
</For>