1.0 ) \double-box AĪ good way to start writing a new markup command, is to take example onĪ builtin one. 0.8 ) \double-box A \markup \override # ' ( box-padding. #)) \markup \double-box A \markup \override # ' ( inter-box-padding. #(define-markup-command (double-box layout props text) (markup?) Thus, we write a double-box markup command, Repeating this lengthy markup would be painful. Then, the padding between the two boxes is considered too small, so we \markup \box \override # ' ( box-padding. Theĭocumentation also mentions how to override it: Uses a box-padding property, which defaults to 0.2. According to the \box documentation, this command Now, we consider that more padding between the text and the boxes is The following example defines a markup command to draw a double boxįirstly, we need to build an approximative result using markups.Ĭonsulting the Text markup commands shows us the \box The example in next section illustrates how to access and override Specify which properties shall be read from the props arguments. Use the #:properties keyword of define-markup-command to The value of the font size property in order to change the behavior. The caller of a markup command may change Processing, the font size is read from props rather than having aįont-size argument. Markup command: for example, when a command uses font size during It is also a way to configure the behavior of a The variables defined in the \header block are automaticallyĪdded to props, so that the book title markup can access the book For instance, when a book title markup is interpreted, all The props argument makes some properties accessible to markupĬommands. (ly:output-def-lookup layout 'line-width) Paper blocks, using the ly:output-def-lookup function.įor instance, the line width (the same as the one used in scores) is The layout argument allows access to properties defined in The layout and props arguments of markup commands bring aĬontext for the markup interpretation: font size, line width, etc. When interpret-markup is called on a markup expression. The time \markup/ markup are interpreted.īut the actual conversion of markup expressions into stencilĮxpressions by executing the markup function bodies only happens TheĮvaluation and typechecking of markup command arguments happens at Into markup expressions already when \markup in a LilyPondĮxpression or the markup macro in Scheme is expanded. Markup expressions have their components assembled ThoseĪrguments are usually only known at a very late stage in Interpret-markup function on a markup expression, passing Quite often this is accomplished by calling the Markup command definition is responsible for converting theĪrguments of the markup command into a stencil expression which is Markup commands have a rather complex life cycle. The leading arguments of markup functions that take a markup as You avoid performance pitfalls by just using Scheme arguments for Since replicating the leading arguments for applying a markupįunction to a markup list is cheap mostly for Scheme arguments, Specified leading arguments) has been applied to every element of Result is a markup list where the markup function (with the Somewhat special as you can apply them to a markup list, and the Markup functions taking a markup as their last argument are There is no limitation on the order of arguments (after the
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