Theme

A layout theme is a set of named values that can be referenced in the value of property specifications. This promotes rendering consistency across disparate components, and facilitates sweeping changes to the layout.

At generation time, the values of the theme become parameters and augment the parameter suite of the questionnaire, so that their references can be resolved with the same mechanisms. Differently from other parameter in the suites, theme parameters are not retained after generation, i.e. are not part of generated questionnaires.

Theme values are as follows:

• theme_color_primary: the primary theme color, typically used as a fill color, or for headings.

• theme_color_secondary: the secondary theme color, typically a variation of the primary color.

• theme_color_reverse: a color that contrasts with primary and secondary colors. Commonly used for text in colored fills.

• theme_font_color: the default text color.

• theme_font_family: the default font face for text.