source: libcaca/trunk/cucul/box.c @ 568

Last change on this file since 568 was 568, checked in by Sam Hocevar, 14 years ago
  • Added glue code to compile libcaca without a libc and build applications as multiboot kernels.
  • Property svn:keywords set to Id
File size: 3.8 KB
Line 
1/*
2 *  libcucul      Unicode canvas library
3 *  Copyright (c) 2002-2006 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 Do What The Fuck You Want To
8 *  Public License, Version 2, as published by Sam Hocevar. See
9 *  http://sam.zoy.org/wtfpl/COPYING for more details.
10 */
11
12/** \file box.c
13 *  \version \$Id: box.c 568 2006-03-09 12:47:37Z sam $
14 *  \author Sam Hocevar <sam@zoy.org>
15 *  \brief Simple box drawing
16 *
17 *  This file contains box drawing functions, both filled and outline.
18 */
19
20#include "config.h"
21
22#if !defined(__KERNEL__)
23#   include <stdlib.h>
24#endif
25
26#include "cucul.h"
27#include "cucul_internals.h"
28
29/**
30 * \brief Draw a box on the screen using the given character.
31 *
32 * \param x1 X coordinate of the upper-left corner of the box.
33 * \param y1 Y coordinate of the upper-left corner of the box.
34 * \param x2 X coordinate of the lower-right corner of the box.
35 * \param y2 Y coordinate of the lower-right corner of the box.
36 * \param c Character to draw the box outline with.
37 * \return void
38 */
39void cucul_draw_box(cucul_t *qq, int x1, int y1, int x2, int y2, char c)
40{
41    cucul_draw_line(qq, x1, y1, x1, y2, c);
42    cucul_draw_line(qq, x1, y2, x2, y2, c);
43    cucul_draw_line(qq, x2, y2, x2, y1, c);
44    cucul_draw_line(qq, x2, y1, x1, y1, c);
45}
46
47/**
48 * \brief Draw a thin box on the screen.
49 *
50 * \param x1 X coordinate of the upper-left corner of the box.
51 * \param y1 Y coordinate of the upper-left corner of the box.
52 * \param x2 X coordinate of the lower-right corner of the box.
53 * \param y2 Y coordinate of the lower-right corner of the box.
54 * \return void
55 */
56void cucul_draw_thin_box(cucul_t *qq, int x1, int y1, int x2, int y2)
57{
58    int x, y, xmax, ymax;
59
60    if(x1 > x2)
61    {
62        int tmp = x1;
63        x1 = x2; x2 = tmp;
64    }
65
66    if(y1 > y2)
67    {
68        int tmp = y1;
69        y1 = y2; y2 = tmp;
70    }
71
72    xmax = qq->width - 1;
73    ymax = qq->height - 1;
74
75    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
76        return;
77
78    /* Draw edges */
79    if(y1 >= 0)
80        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
81            cucul_putchar(qq, x, y1, '-');
82
83    if(y2 <= ymax)
84        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
85            cucul_putchar(qq, x, y2, '-');
86
87    if(x1 >= 0)
88        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
89            cucul_putchar(qq, x1, y, '|');
90
91    if(x2 <= xmax)
92        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
93            cucul_putchar(qq, x2, y, '|');
94
95    /* Draw corners */
96    if(x1 >= 0 && y1 >= 0)
97        cucul_putchar(qq, x1, y1, ',');
98
99    if(x1 >= 0 && y2 <= ymax)
100        cucul_putchar(qq, x1, y2, '`');
101
102    if(x2 <= xmax && y1 >= 0)
103        cucul_putchar(qq, x2, y1, '.');
104
105    if(x2 <= xmax && y2 <= ymax)
106        cucul_putchar(qq, x2, y2, '\'');
107}
108
109/**
110 * \brief Fill a box on the screen using the given character.
111 *
112 * \param x1 X coordinate of the upper-left corner of the box.
113 * \param y1 Y coordinate of the upper-left corner of the box.
114 * \param x2 X coordinate of the lower-right corner of the box.
115 * \param y2 Y coordinate of the lower-right corner of the box.
116 * \param c Character to fill the box with.
117 * \return void
118 */
119void cucul_fill_box(cucul_t *qq, int x1, int y1, int x2, int y2, char c)
120{
121    int x, y, xmax, ymax;
122
123    if(x1 > x2)
124    {
125        int tmp = x1;
126        x1 = x2; x2 = tmp;
127    }
128
129    if(y1 > y2)
130    {
131        int tmp = y1;
132        y1 = y2; y2 = tmp;
133    }
134
135    xmax = qq->width - 1;
136    ymax = qq->height - 1;
137
138    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
139        return;
140
141    if(x1 < 0) x1 = 0;
142    if(y1 < 0) y1 = 0;
143    if(x2 > xmax) x2 = xmax;
144    if(y2 > ymax) y2 = ymax;
145
146    for(y = y1; y <= y2; y++)
147        for(x = x1; x <= x2; x++)
148            cucul_putchar(qq, x, y, c);
149}
150
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