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/*
* Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
* Copyright (C) 2006 - INRIA - Jean-Baptiste Silvy
*
* This file must be used under the terms of the CeCILL.
* This source file is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at
* http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
*
*/
/*------------------------------------------------------------------------*/
/* file: pixel_mode.c */
/* desc : make the correspondence between pixel mode name in scilab */
/* and the corresponding index */
/*------------------------------------------------------------------------*/
#include <string.h>
#include "pixel_mode.h"
/**
* number of different pixel drawing modes.
*/
#define NB_PIXEL_MODES 16
/**
* the array of correspondance
*/
static char * pmodes[NB_PIXEL_MODES] = { "clear" , /* 0 */
"and" , /* 1 */
"andReverse" , /* 2 */
"copy" , /* 3 */
"andInverted" , /* 4 */
"noop" , /* 5 */
"xor" , /* 6 */
"or" , /* 7 */
"nor" , /* 8 */
"equiv" , /* 9 */
"invert" , /* 10 */
"orReverse" , /* 11 */
"copyInverted", /* 12 */
"orInverted" , /* 13 */
"nand" , /* 14 */
"set" , /* 15 */
};
/*----------------------------------------------------------------------------------*/
char * getPixelMode(int ind)
{
return pmodes[ind];
}
/*----------------------------------------------------------------------------------*/
int getPixelModeIndex(const char * modeName)
{
/* I'm lazy. I won't use a hash table. Sorry if you are adding a new mode. */
/* But I don't think it will happen often */
int nameLen = 0;
nameLen = (int)strlen(modeName);
switch (modeName[0])
{
case 'a' :
{
/* check input is longer than the shorter string */
if (nameLen < 3)
{
break ;
}
switch (modeName[3])
{
case 0 : /* and */
return 1;
break;
case 'R' : /* andReverse */
return 2;
break;
case 'I' : /* andInverted */
return 4;
break;
}
break;
}
case 'c':
{
if (nameLen < 4)
{
break ;
}
switch (modeName[4])
{
case 'r' : /* clear */
return 0;
break;
case 0 : /* copy */
return 3;
break;
case 'I' : /* copyInverted */
return 12;
break;
}
break;
}
case 'e':
{
if (nameLen < 5)
{
break ;
}
return 9 ; /* equiv */
break;
}
case 'i':
{
if (nameLen < 6)
{
break ;
}
return 10 ; /* invert */
break;
}
case 'n':
{
if (nameLen < 3)
{
break ;
}
switch (modeName[2])
{
case 'o' : /* noop */
return 5;
break;
case 'r' : /* nor */
return 8;
break;
case 'n' : /* nand */
return 14;
break;
}
break;
}
case 'o':
{
if (nameLen < 2)
{
break ;
}
switch (modeName[2])
{
case 0 : /* or */
return 7;
break;
case 'R' : /* orReverse */
return 11;
break;
case 'I' : /* orInverted */
return 13;
break;
}
break;
}
case 's':
{
if (nameLen < 3)
{
break ;
}
return 15 ; /* set */
break;
}
case 'x':
{
if (nameLen < 3)
{
break ;
}
return 6 ; /* xor */
break;
}
}
return -1;
}
/*----------------------------------------------------------------------------------*/
int getNbPixelModes(void)
{
return NB_PIXEL_MODES;
}
/*----------------------------------------------------------------------------------*/
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