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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file select_utils.c
* \ingroup editors
*/
#include "BLI_utildefines.h"
#include "ED_select_utils.h"
/** 1: select, 0: deselect, -1: pass. */
int ED_select_op_action(const eSelectOp sel_op, const bool is_select, const bool is_inside)
{
switch (sel_op) {
case SEL_OP_ADD:
return (!is_select && (is_inside)) ? 1 : -1;
case SEL_OP_SUB:
return (is_select && is_inside) ? 0 : -1;
case SEL_OP_SET:
return is_inside ? 1 : 0;
case SEL_OP_AND:
return (is_select && is_inside) ? -1 : (is_select ? 0 : -1);
case SEL_OP_XOR:
return (is_select && is_inside) ? 0 : ((!is_select && is_inside) ? 1 : -1);
}
BLI_assert(!"invalid sel_op");
return -1;
}
/**
* Use when we've de-selected all items first (for modes that need it).
*
* \note In some cases changing selection needs to perform other checks,
* so it's more straightforward to deselect all, then select.
*/
int ED_select_op_action_deselected(const eSelectOp sel_op, const bool is_select, const bool is_inside)
{
switch (sel_op) {
case SEL_OP_ADD:
return (!is_select && is_inside) ? 1 : -1;
case SEL_OP_SUB:
return (is_select && is_inside) ? 0 : -1;
case SEL_OP_SET:
/* Only difference w/ function above. */
return is_inside ? 1 : -1;
case SEL_OP_AND:
return (is_select && is_inside) ? -1 : (is_select ? 0 : -1);
case SEL_OP_XOR:
return (is_select && is_inside) ? 0 : ((!is_select && is_inside) ? 1 : -1);
}
BLI_assert(!"invalid sel_op");
return -1;
}
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