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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * Copyright INRIA, CNRS and contributors *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
let underscore = Glib.Utf8.to_unichar "_" ~pos:(ref 0)
let prime = Glib.Utf8.to_unichar "'" ~pos:(ref 0)
let dot = Glib.Utf8.to_unichar "." ~pos:(ref 0)
let find_word_start (it:GText.iter) =
let rec aux it good =
if it#is_start then good
else
let it = it#backward_char in
let c = it#char in
if Glib.Unichar.isalpha c || c = underscore then aux it it
else if Glib.Unichar.isalnum c || c = prime || c = dot then aux it good
else good in
aux it it
let find_word_end (it:GText.iter) =
let rec aux it good =
if it#is_end then good
else
let c = it#char in
let it = it#forward_char in
if Glib.Unichar.isalnum c || c = prime || c = underscore then aux it it
else if c = dot then aux it good
else good in
aux it it
let starts_word (it:GText.iter) =
if it#is_start then true
else
let it = it#backward_char in
let c = it#char in
if Glib.Unichar.isalpha c || c = underscore then
it#equal (find_word_start it)
else false
let ends_word (it:GText.iter) =
if it#is_end then true
else
let c = it#char in
let it = it#forward_char in
if Glib.Unichar.isalnum c || c = prime || c = underscore then
it#equal (find_word_end it)
else false
let get_word_around (it:GText.iter) =
let start = find_word_start it in
let stop = find_word_end it in
start,stop
(** On double-click on a view, select the whole word. This is a workaround for
a deficient word handling in TextView. *)
let fix_double_click self =
let callback ev = match GdkEvent.get_type ev with
| `TWO_BUTTON_PRESS ->
let iter = self#buffer#get_iter `INSERT in
let start, stop = get_word_around iter in
let () = self#buffer#move_mark `INSERT ~where:start in
let () = self#buffer#move_mark `SEL_BOUND ~where:stop in
true
| _ -> false
in
ignore (self#event#connect#button_press ~callback)
|
