eiffel-iup/library/iup_widget_text_pos.e

deferred class IUP_WIDGET_TEXT_POS
-- Commands to convert position in lin-col and viceversa.

inherit
	IUP_WIDGET_INTERNALS
	
feature {ANY}

	text_convert_lin_col_to_pos (line, column: INTEGER): INTEGER
		-- Converts a (lin, col) character positioning into an absolute position. 
		-- lin and col starts at 1, pos starts at 0.
		local
			p: INTEGER
		do
			int_text_convert_lin_col_to_pos(widget, line, column, $p)

			Result := p
		end

	text_convert_pos_to_lin_col (position: INTEGER): TUPLE[INTEGER, INTEGER]
		-- Converts an absolute position into a (lin, col) character positioning. 
		-- lin and col starts at 1, pos starts at 0.
		local
			l, c: INTEGER
		do
			int_text_convert_pos_to_lin_col(widget, position, $l, $c)

			Result := [l, c]
		end

feature {NONE}

	-- Internals
	
	int_text_convert_lin_col_to_pos (wdt: POINTER; lin, col: INTEGER; pos: POINTER)
		external
			"C inline use %"eiffel-iup.h%""
      alias
			"IupTextConvertLinColToPos ($wdt, $lin, $col, $pos);"
      end

	int_text_convert_pos_to_lin_col (wdt: POINTER; pos: INTEGER; lin, col: POINTER)
		external
			"C inline use %"eiffel-iup.h%""
      alias
			"IupTextConvertPosToLinCol ($wdt, $pos, $lin, $col);"
      end

end

-- The MIT License (MIT)

-- Copyright (c) 2017, 2019 by German A. Arias

-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in 
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.