cross-platform editor control

i need cross-platform editor control gui-part an in-house tool. control competence commercial, nonetheless reasonable price.

required features:

• platforms: win32, os x, linux


• utf-8 support


• fine-grained run-time control calm impression (or during slightest color)


• nice low-level plain c api but common terrible bloat


• should hinder me have comforts (even i'll have exercise myself):
  
  
  
  
  • undo / redo
  
  
  • copy / paste
  
  
  • context menu, depending click position text
  
  
  • toolbar, depending cursor position text
  
  
  • sidebar panel, depending cursor position text
  
  

actually above requires rudimentary control, nonetheless whole cross-platform gui library.

discarded options:

• scintilla descendants


• fltk


• fox-toolkit


• gtksourceview

update:

note: i've slipped half-written dump explanation here, i apologize. scintilla indeed does work os x. however, i correctly, scintilla's api c++.

use-case:

my use-case tradition "semi-rigid" explanation editor, where user giveaway copy-paste around, supplement comments where wishes, even form calm directly wish. nonetheless calm structure firm healthy libel illustration explanation tree (somewhat ast-like nature). i digest something intellisense-like (or code-template-like) used sure authoring apparatus (instead typing explanation hand).

btw, storage format plain text, nonetheless instead middle illustration mentioned explanation tree (with comments whitespaces etc. metainfo).

so, i have required information news calm indispensable colors myself. i need any outmost lexers etc.