100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* c_arrow.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: alao <alao@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/03/10 09:04:42 by alao #+# #+# */
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/* Updated: 2017/03/16 08:17:12 by alao ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "completion.h"
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/*
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** Calculate the offset id value from the current one relative to the list size.
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** lst_modulo is the number in element in the last column of the list that is
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** not perfectly in the same size.
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**
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*/
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static int c_idsolver(t_comp *c, int ids, int ids_bk)
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{
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int lst_modulo;
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lst_modulo = c->lst->prev->id % c->c_line;
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if (lst_modulo == 0)
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lst_modulo = c->c_line;
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if (ids > c->lst->prev->id)
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{
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ids -= c->lst->prev->id;
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if (ids_bk < ((c->lst->prev->id - lst_modulo) + 1))
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ids = ids + lst_modulo;
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else
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ids = ids - (c->c_line - lst_modulo);
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}
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else if (ids < c->lst->id)
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{
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if (ids_bk <= lst_modulo)
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ids = (c->lst->prev->id - lst_modulo) + ids_bk;
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else
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ids = c->lst->prev->id - (ids * -1) - lst_modulo;
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if (ids < c->lst->id)
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ids = 1;
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}
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return (ids);
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}
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/*
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** Determine the movement in the list by retrieving the current id selected in
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** the list and add/substract the value depending on the keypress (left/right).
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** Call for c_idsolver() to adjust this value and cycle in the list to reassign
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** the correct element to cursor position.
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*/
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static void c_arrow_multi(t_comp *c, long int keypress)
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{
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t_clst *ptr;
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int ids;
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int ids_bk;
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ids = 0;
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ptr = c->lst;
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while (!ptr->cursor)
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ptr = ptr->next;
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ptr->cursor = 0;
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ids = ptr->id;
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ids_bk = ids;
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(keypress == 4479771) ? (ids -= c->c_line) : (0);
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(keypress == 4414235) ? (ids += c->c_line) : (0);
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ids = c_idsolver(c, ids, ids_bk);
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ptr = c->lst;
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while (ptr->id != ids)
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ptr = ptr->next;
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ptr->cursor = 1;
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}
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/*
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** Arrow support for moving inside the list of the completion.
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** If the keypress is left/right, c_arrow_multi() is called. Else the list is
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** just read until the cursor is found and the next/prev is reassigned as
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** selected.
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*/
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void c_arrow(t_comp *c, long int keypress)
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{
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t_clst *ptr;
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ptr = c->lst;
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if (keypress == 4479771 || keypress == 4414235)
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c_arrow_multi(c, keypress);
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else
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{
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while (!ptr->cursor)
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ptr = ptr->next;
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ptr->cursor = 0;
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(keypress == 4283163) ? (ptr->prev->cursor = 1) : (0);
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(keypress == 4348699) ? (ptr->next->cursor = 1) : (0);
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}
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}
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