source: libcaca/trunk/cucul/box.c @ 540

Last change on this file since 540 was 540, checked in by Sam Hocevar, 14 years ago
  • Polished the driver split a bit (still no events, except resize events), properly credited authors and documented a few things.
  • Property svn:keywords set to Id
File size: 3.7 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 540 2006-03-07 09:17:35Z 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#include <stdlib.h>
23
24#include "cucul.h"
25#include "cucul_internals.h"
26
27/**
28 * \brief Draw a box on the screen using the given character.
29 *
30 * \param x1 X coordinate of the upper-left corner of the box.
31 * \param y1 Y coordinate of the upper-left corner of the box.
32 * \param x2 X coordinate of the lower-right corner of the box.
33 * \param y2 Y coordinate of the lower-right corner of the box.
34 * \param c Character to draw the box outline with.
35 * \return void
36 */
37void cucul_draw_box(cucul_t *qq, int x1, int y1, int x2, int y2, char c)
38{
39    cucul_draw_line(qq, x1, y1, x1, y2, c);
40    cucul_draw_line(qq, x1, y2, x2, y2, c);
41    cucul_draw_line(qq, x2, y2, x2, y1, c);
42    cucul_draw_line(qq, x2, y1, x1, y1, c);
43}
44
45/**
46 * \brief Draw a thin box on the screen.
47 *
48 * \param x1 X coordinate of the upper-left corner of the box.
49 * \param y1 Y coordinate of the upper-left corner of the box.
50 * \param x2 X coordinate of the lower-right corner of the box.
51 * \param y2 Y coordinate of the lower-right corner of the box.
52 * \return void
53 */
54void cucul_draw_thin_box(cucul_t *qq, int x1, int y1, int x2, int y2)
55{
56    int x, y, xmax, ymax;
57
58    if(x1 > x2)
59    {
60        int tmp = x1;
61        x1 = x2; x2 = tmp;
62    }
63
64    if(y1 > y2)
65    {
66        int tmp = y1;
67        y1 = y2; y2 = tmp;
68    }
69
70    xmax = qq->width - 1;
71    ymax = qq->height - 1;
72
73    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
74        return;
75
76    /* Draw edges */
77    if(y1 >= 0)
78        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
79            cucul_putchar(qq, x, y1, '-');
80
81    if(y2 <= ymax)
82        for(x = x1 < 0 ? 1 : x1 + 1; x < x2 && x < xmax; x++)
83            cucul_putchar(qq, x, y2, '-');
84
85    if(x1 >= 0)
86        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
87            cucul_putchar(qq, x1, y, '|');
88
89    if(x2 <= xmax)
90        for(y = y1 < 0 ? 1 : y1 + 1; y < y2 && y < ymax; y++)
91            cucul_putchar(qq, x2, y, '|');
92
93    /* Draw corners */
94    if(x1 >= 0 && y1 >= 0)
95        cucul_putchar(qq, x1, y1, ',');
96
97    if(x1 >= 0 && y2 <= ymax)
98        cucul_putchar(qq, x1, y2, '`');
99
100    if(x2 <= xmax && y1 >= 0)
101        cucul_putchar(qq, x2, y1, '.');
102
103    if(x2 <= xmax && y2 <= ymax)
104        cucul_putchar(qq, x2, y2, '\'');
105}
106
107/**
108 * \brief Fill a box on the screen using the given character.
109 *
110 * \param x1 X coordinate of the upper-left corner of the box.
111 * \param y1 Y coordinate of the upper-left corner of the box.
112 * \param x2 X coordinate of the lower-right corner of the box.
113 * \param y2 Y coordinate of the lower-right corner of the box.
114 * \param c Character to fill the box with.
115 * \return void
116 */
117void cucul_fill_box(cucul_t *qq, int x1, int y1, int x2, int y2, char c)
118{
119    int x, y, xmax, ymax;
120
121    if(x1 > x2)
122    {
123        int tmp = x1;
124        x1 = x2; x2 = tmp;
125    }
126
127    if(y1 > y2)
128    {
129        int tmp = y1;
130        y1 = y2; y2 = tmp;
131    }
132
133    xmax = qq->width - 1;
134    ymax = qq->height - 1;
135
136    if(x2 < 0 || y2 < 0 || x1 > xmax || y1 > ymax)
137        return;
138
139    if(x1 < 0) x1 = 0;
140    if(y1 < 0) y1 = 0;
141    if(x2 > xmax) x2 = xmax;
142    if(y2 > ymax) y2 = ymax;
143
144    for(y = y1; y <= y2; y++)
145        for(x = x1; x <= x2; x++)
146            cucul_putchar(qq, x, y, c);
147}
148
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