119 lines
2.7 KiB
C
119 lines
2.7 KiB
C
/*
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* TOIlet The Other Implementation’s letters
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* Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
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* All Rights Reserved
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*
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* $Id$
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the Do What The Fuck You Want To
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* Public License, Version 2, as published by Sam Hocevar. See
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* http://sam.zoy.org/wtfpl/COPYING for more details.
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*/
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/*
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* This file contains post-processing filter functions.
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*/
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#include "config.h"
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#if defined(HAVE_INTTYPES_H)
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# include <inttypes.h>
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#endif
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#include <cucul.h>
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#include "filter.h"
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void filter_autocrop(cucul_canvas_t *cv)
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{
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unsigned int x, y, w, h;
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unsigned int xmin, xmax, ymin, ymax;
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xmin = w = cucul_get_canvas_width(cv);
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xmax = 0;
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ymin = h = cucul_get_canvas_height(cv);
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ymax = 0;
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for(y = 0; y < h; y++)
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for(x = 0; x < w; x++)
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{
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unsigned long int ch = cucul_getchar(cv, x, y);
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if(ch != (unsigned char)' ')
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{
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if(x < xmin)
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xmin = x;
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if(x > xmax)
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xmax = x;
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if(y < ymin)
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ymin = y;
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if(y > ymax)
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ymax = y;
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}
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}
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if(xmax < xmin || ymax < ymin)
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return;
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cucul_set_canvas_boundaries(cv, xmin, ymin,
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xmax - xmin + 1, ymax - ymin + 1);
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}
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void filter_metal(cucul_canvas_t *cv)
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{
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static unsigned char const palette[] =
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{
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CUCUL_COLOR_LIGHTBLUE,
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CUCUL_COLOR_BLUE,
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CUCUL_COLOR_LIGHTGRAY,
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CUCUL_COLOR_DARKGRAY,
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};
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unsigned int x, y, w, h;
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w = cucul_get_canvas_width(cv);
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h = cucul_get_canvas_height(cv);
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for(y = 0; y < h; y++)
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for(x = 0; x < w; x++)
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{
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unsigned long int ch = cucul_getchar(cv, x, y);
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int i;
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if(ch == (unsigned char)' ')
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continue;
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i = y * 4 / h;
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cucul_set_color(cv, palette[i], CUCUL_COLOR_TRANSPARENT);
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cucul_putchar(cv, x, y, ch);
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}
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}
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void filter_gay(cucul_canvas_t *cv)
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{
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static unsigned char const rainbow[] =
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{
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CUCUL_COLOR_LIGHTMAGENTA,
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CUCUL_COLOR_LIGHTRED,
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CUCUL_COLOR_YELLOW,
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CUCUL_COLOR_LIGHTGREEN,
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CUCUL_COLOR_LIGHTCYAN,
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CUCUL_COLOR_LIGHTBLUE,
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};
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unsigned int x, y, w, h;
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w = cucul_get_canvas_width(cv);
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h = cucul_get_canvas_height(cv);
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for(y = 0; y < h; y++)
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for(x = 0; x < w; x++)
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{
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unsigned long int ch = cucul_getchar(cv, x, y);
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if(ch != (unsigned char)' ')
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{
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cucul_set_color(cv, rainbow[(x / 2 + y) % 6],
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CUCUL_COLOR_TRANSPARENT);
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cucul_putchar(cv, x, y, ch);
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}
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}
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}
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