Derive Macro EguiStruct 

#[derive(EguiStruct)]
{
    // Attributes available to this derive:
    #[eguis]
    #[eguisM]
}

Derive EguiStruct, EguiStructClone & EguiStructEq for struct/enum

#[derive(EguiStruct)]
#[eguis(rename_all = "Upper")]
struct Data{
    #[eguis(hint = "This is field")]
    field: usize
}

Atributtes eguis & eguisM are supported on either enum/struct, field or variant level to configure trait implementation and may take following values:

• enum/struct level:
  • rename_all = "str"- renames all fields/variants to selected case (recognized values: "Upper", "Lower", "Title", "Toggle", "Camel", "Pascal", "UpperCamel", "Snake", "UpperSnake", "ScreamingSnake", "Kebab", "Cobol", "UpperKebab", "Train", "Flat", "UpperFlat", "Alternating", "Sentence")
  • prefix = "str"- add this prefix when generating rust-i18n keys
  • no_mut - do not generate EguiStruct implementation
  • no_eclone - do not generate EguiStructClone implementation
  • no_eeq - do not generate EguiStructEq implementation
  • start_collapsed = "Expr" - sets start_collapsed() implementation (should return bool; can use self)
  • resetable = "val" OR resetable(with_expr = Expr) - all fields/variants will be resetable according to provieded value (val: "not_resetable", "field_default", "struct_default", "follow_arg"(use value passed on runtime through reset2 arg))
• variant level:
  • rename ="str"- Name of the field to be displayed on UI labels or variantName in i18n key
  • skip - Don’t generate code for the given variant
  • hint ="str" - add on hover hint
  • imut - variant will be shown as immutable
  • i18n ="i18n_key"- normally i18n keys are in format “prefix.enumName.variantName”, override this with “i18n_key”
  • resetable- overides enum/struct level resetable
• field level
  • rename, skip, hint, imut, i18n- see variant level
  • resetable- overides enum/struct & variant level resetable
  • on_change = "expr"- Use function (expr: closure surounded by () OR function path) callback (when value has been changed; signature: fn(&mut field_type))
  • on_change_struct = "expr"- Similar to on_change but takes whole struct: signature: fn(&mut self)
  • config- pass format/config object to customise how field is displayed
  • start_collapsed = true/false - field always starts collapsed/uncollapsed (overides fields start_collapsed() return)
  • map_pre- Expression (closure surounded by () OR function path) called to map field to another type before displaying
    • this allows displaying fields that does not implement EguiStruct or overiding how field is shown
    • function shall take & field_type or &mut field_type AND return either mutable reference or owned value of selected type (that implements EguiStruct)
    • ! beware, because (if map_pre_ref is not set) this will make field work only with resetable values: {NonResetable, WithExpr, FieldDefault}
    • defaults to map_pre_ref (so if &mut is not needed for map, can be left unused)
  • map_pre_ref- similar to map_pre, but takes immutable reference (signature: fn(&field_type)->mapped),
    • used to convert default/reset2 and inside eguis_eq (if eeq not specified)
  • map_post- Expression (closure surounded by () OR function path) called to map mapped field back to field_type after displaying
    • only used if map_pre is set
    • signature: fn(&mut field_type, &mapped) (with mapped type matching return from map_pre)
    • expresion should assign new value to &mut field_type
  • eeq- override eguis_eq function for field (signature fn(&field_type, &field_type))
    • if either field_type : EguiStructEq OR map_pre_ref is specified can be unused
  • eclone- override eguis_eclone function for field (signature fn(&mut field_type, &field_type))
    • if field_type : EguiStructClone can be unused