Module theme 

SalsaTheme is the main structure for themes.

It holds one Palette that has the color-table and a list of aliases for colors in the color-table. These aliases allow the palette to give a bit more semantics to it plain color-array.

SalsaTheme is on the other end and has a hashmap of style-names that map to

• a Style
• a Fn closure that creates a widget-specific xxxStyle struct. this closure can use the palette or any previously defined styles to create the xxxStyle struct.

In between is a create-fn that links all of this together.

In your application you can use one of the defined Themes/Palettes and modify/extend before you hand it off to your UI code.

Rationale

• Colors are separated from styles. There is an editor pal-edit to create a palette + aliases. It can generate rust code that can be used as statíc data.

• There is a .pal file-format for this. todo: add a function to load a .pal

• Themes and xxxStyle structs can contain other things than colors. Block is used often. Alignment and related flags are available. And there are some flags that modify the behaviour of widgets.

• xxxStyle combine everything in one package, and can be set with one function call when rendering. You don’t need 20 lines of styling functions for each widget.

Structs

SalsaTheme

SalsaTheme holds any predefined styles for the UI.

Enums

Category

Categorization of themes. Helpful when extending an existing theme.