source: libcaca/branches/0.5/src/box.c @ 4104

Last change on this file since 4104 was 268, checked in by Sam Hocevar, 16 years ago
  • src/io.c: + Added caca_wait_event(), a blocking caca_get_event().
  • src/ examples/: + More documentation.
  • doc/doxygen.cfg.in: + doc/doxygen.cfg is now generated by configure, so that we can use

@top_srcdir@ and we no longer need to hardcode PROJECT_NUMBER.

+ Create manpages.

  • Property svn:keywords set to Id
File size: 4.1 KB
Line 
1/*
2 *  libcaca       ASCII-Art library
3 *  Copyright (c) 2002, 2003 Sam Hocevar <sam@zoy.org>
4 *                All Rights Reserved
5 *
6 *  This library is free software; you can redistribute it and/or
7 *  modify it under the terms of the GNU Lesser General Public
8 *  License as published by the Free Software Foundation; either
9 *  version 2 of the License, or (at your option) any later version.
10 *
11 *  This library is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 *  Lesser General Public License for more details.
15 *
16 *  You should have received a copy of the GNU Lesser General Public
17 *  License along with this library; if not, write to the Free Software
18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 *  02111-1307  USA
20 */
21
22/** \file box.c
23 *  \version \$Id: box.c 268 2003-12-23 13:27:40Z sam $
24 *  \author Sam Hocevar <sam@zoy.org>
25 *  \brief Simple box drawing functions
26 *
27 *  This file contains box drawing functions, both filled and outline.
28 */
29
30#include "config.h"
31
32#include <stdlib.h>
33
34#include "caca.h"
35#include "caca_internals.h"
36
37/**
38 * \brief Draw a box on the screen using the given character.
39 *
40 * \param x1 X coordinate of the upper-left corner of the box.
41 * \param y1 Y coordinate of the upper-left corner of the box.
42 * \param x2 X coordinate of the lower-right corner of the box.
43 * \param y2 Y coordinate of the lower-right corner of the box.
44 * \param c Character to draw the box outline with.
45 * \return void
46 */
47void caca_draw_box(int x1, int y1, int x2, int y2, char c)
48{
49    caca_draw_line(x1, y1, x1, y2, c);
50    caca_draw_line(x1, y2, x2, y2, c);
51    caca_draw_line(x2, y2, x2, y1, c);
52    caca_draw_line(x2, y1, x1, y1, c);
53}
54
55/**
56 * \brief Draw a thin box on the screen.
57 *
58 * \param x1 X coordinate of the upper-left corner of the box.
59 * \param y1 Y coordinate of the upper-left corner of the box.
60 * \param x2 X coordinate of the lower-right corner of the box.
61 * \param y2 Y coordinate of the lower-right corner of the box.
62 * \return void
63 */
64void caca_draw_thin_box(int x1, int y1, int x2, int y2)
65{
66    int x, y, xmax, ymax;
67
68    if(x1 > x2)
69    {
70        int tmp = x1;
71        x1 = x2; x2 = tmp;
72    }
73
74    if(y1 > y2)
75    {
76        int tmp = y1;
77        y1 = y2; y2 = tmp;
78    }
79
80    xmax = _caca_width - 1;
81    ymax = _caca_height - 1;
82
83    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
84        return;
85
86    /* Draw edges */
87    if(y1 >= 0)
88        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
89            caca_putchar(x, y1, '-');
90
91    if(y2 <= ymax)
92        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
93            caca_putchar(x, y2, '-');
94
95    if(x1 >= 0)
96        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
97            caca_putchar(x1, y, '|');
98
99    if(x2 <= xmax)
100        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
101            caca_putchar(x2, y, '|');
102
103    /* Draw corners */
104    if(x1 >= 0 && y1 >= 0)
105        caca_putchar(x1, y1, ',');
106
107    if(x1 >= 0 && y2 <= ymax)
108        caca_putchar(x1, y2, '`');
109
110    if(x2 <= xmax && y1 >= 0)
111        caca_putchar(x2, y1, '.');
112
113    if(x2 <= xmax && y2 <= ymax)
114        caca_putchar(x2, y2, '\'');
115}
116
117/**
118 * \brief Fill a box on the screen using the given character.
119 *
120 * \param x1 X coordinate of the upper-left corner of the box.
121 * \param y1 Y coordinate of the upper-left corner of the box.
122 * \param x2 X coordinate of the lower-right corner of the box.
123 * \param y2 Y coordinate of the lower-right corner of the box.
124 * \param c Character to fill the box with.
125 * \return void
126 */
127void caca_fill_box(int x1, int y1, int x2, int y2, char c)
128{
129    int x, y, xmax, ymax;
130
131    if(x1 > x2)
132    {
133        int tmp = x1;
134        x1 = x2; x2 = tmp;
135    }
136
137    if(y1 > y2)
138    {
139        int tmp = y1;
140        y1 = y2; y2 = tmp;
141    }
142
143    xmax = _caca_width - 1;
144    ymax = _caca_height - 1;
145
146    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
147        return;
148
149    if(x1 < 0) x1 = 0;
150    if(y1 < 0) y1 = 0;
151    if(x2 > xmax) x2 = xmax;
152    if(y2 > ymax) y2 = ymax;
153
154    for(y = y1; y <= y2; y++)
155        for(x = x1; x <= x2; x++)
156            caca_putchar(x, y, c);
157}
158
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