1 | /* |
---|
2 | * libcaca Colour ASCII-Art library |
---|
3 | * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org> |
---|
4 | * All Rights Reserved |
---|
5 | * |
---|
6 | * $Id: box.c 2821 2008-09-27 13:12:46Z sam $ |
---|
7 | * |
---|
8 | * This library is free software. It comes without any warranty, to |
---|
9 | * the extent permitted by applicable law. You can redistribute it |
---|
10 | * and/or modify it under the terms of the Do What The Fuck You Want |
---|
11 | * To Public License, Version 2, as published by Sam Hocevar. See |
---|
12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
---|
13 | */ |
---|
14 | |
---|
15 | /* |
---|
16 | * This file contains box drawing functions, both filled and outline. |
---|
17 | */ |
---|
18 | |
---|
19 | #include "config.h" |
---|
20 | |
---|
21 | #if !defined(__KERNEL__) |
---|
22 | # include <stdlib.h> |
---|
23 | #endif |
---|
24 | |
---|
25 | #include "caca.h" |
---|
26 | #include "caca_internals.h" |
---|
27 | |
---|
28 | /** \brief Draw a box on the canvas using the given character. |
---|
29 | * |
---|
30 | * This function never fails. |
---|
31 | * |
---|
32 | * \param cv The handle to the libcaca canvas. |
---|
33 | * \param x X coordinate of the upper-left corner of the box. |
---|
34 | * \param y Y coordinate of the upper-left corner of the box. |
---|
35 | * \param w Width of the box. |
---|
36 | * \param h Height of the box. |
---|
37 | * \param ch UTF-32 character to be used to draw the box. |
---|
38 | * \return This function always returns 0. |
---|
39 | */ |
---|
40 | int caca_draw_box(caca_canvas_t *cv, int x, int y, int w, int h, uint32_t ch) |
---|
41 | { |
---|
42 | int x2 = x + w - 1; |
---|
43 | int y2 = y + h - 1; |
---|
44 | |
---|
45 | caca_draw_line(cv, x, y, x, y2, ch); |
---|
46 | caca_draw_line(cv, x, y2, x2, y2, ch); |
---|
47 | caca_draw_line(cv, x2, y2, x2, y, ch); |
---|
48 | caca_draw_line(cv, x2, y, x, y, ch); |
---|
49 | |
---|
50 | return 0; |
---|
51 | } |
---|
52 | |
---|
53 | /** \brief Draw a thin box on the canvas. |
---|
54 | * |
---|
55 | * This function never fails. |
---|
56 | * |
---|
57 | * \param cv The handle to the libcaca canvas. |
---|
58 | * \param x X coordinate of the upper-left corner of the box. |
---|
59 | * \param y Y coordinate of the upper-left corner of the box. |
---|
60 | * \param w Width of the box. |
---|
61 | * \param h Height of the box. |
---|
62 | * \return This function always returns 0. |
---|
63 | */ |
---|
64 | int caca_draw_thin_box(caca_canvas_t *cv, int x, int y, int w, int h) |
---|
65 | { |
---|
66 | int i, j, xmax, ymax; |
---|
67 | |
---|
68 | int x2 = x + w - 1; |
---|
69 | int y2 = y + h - 1; |
---|
70 | |
---|
71 | if(x > x2) |
---|
72 | { |
---|
73 | int tmp = x; |
---|
74 | x = x2; x2 = tmp; |
---|
75 | } |
---|
76 | |
---|
77 | if(y > y2) |
---|
78 | { |
---|
79 | int tmp = y; |
---|
80 | y = y2; y2 = tmp; |
---|
81 | } |
---|
82 | |
---|
83 | xmax = cv->width - 1; |
---|
84 | ymax = cv->height - 1; |
---|
85 | |
---|
86 | if(x2 < 0 || y2 < 0 || x > xmax || y > ymax) |
---|
87 | return 0; |
---|
88 | |
---|
89 | /* Draw edges */ |
---|
90 | if(y >= 0) |
---|
91 | for(i = x < 0 ? 1 : x + 1; i < x2 && i < xmax; i++) |
---|
92 | caca_put_char(cv, i, y, '-'); |
---|
93 | |
---|
94 | if(y2 <= ymax) |
---|
95 | for(i = x < 0 ? 1 : x + 1; i < x2 && i < xmax; i++) |
---|
96 | caca_put_char(cv, i, y2, '-'); |
---|
97 | |
---|
98 | if(x >= 0) |
---|
99 | for(j = y < 0 ? 1 : y + 1; j < y2 && j < ymax; j++) |
---|
100 | caca_put_char(cv, x, j, '|'); |
---|
101 | |
---|
102 | if(x2 <= xmax) |
---|
103 | for(j = y < 0 ? 1 : y + 1; j < y2 && j < ymax; j++) |
---|
104 | caca_put_char(cv, x2, j, '|'); |
---|
105 | |
---|
106 | /* Draw corners */ |
---|
107 | caca_put_char(cv, x, y, ','); |
---|
108 | caca_put_char(cv, x, y2, '`'); |
---|
109 | caca_put_char(cv, x2, y, '.'); |
---|
110 | caca_put_char(cv, x2, y2, '\''); |
---|
111 | |
---|
112 | return 0; |
---|
113 | } |
---|
114 | |
---|
115 | /** \brief Draw a box on the canvas using CP437 characters. |
---|
116 | * |
---|
117 | * This function never fails. |
---|
118 | * |
---|
119 | * \param cv The handle to the libcaca canvas. |
---|
120 | * \param x X coordinate of the upper-left corner of the box. |
---|
121 | * \param y Y coordinate of the upper-left corner of the box. |
---|
122 | * \param w Width of the box. |
---|
123 | * \param h Height of the box. |
---|
124 | * \return This function always returns 0. |
---|
125 | */ |
---|
126 | int caca_draw_cp437_box(caca_canvas_t *cv, int x, int y, int w, int h) |
---|
127 | { |
---|
128 | int i, j, xmax, ymax; |
---|
129 | |
---|
130 | int x2 = x + w - 1; |
---|
131 | int y2 = y + h - 1; |
---|
132 | |
---|
133 | if(x > x2) |
---|
134 | { |
---|
135 | int tmp = x; |
---|
136 | x = x2; x2 = tmp; |
---|
137 | } |
---|
138 | |
---|
139 | if(y > y2) |
---|
140 | { |
---|
141 | int tmp = y; |
---|
142 | y = y2; y2 = tmp; |
---|
143 | } |
---|
144 | |
---|
145 | xmax = cv->width - 1; |
---|
146 | ymax = cv->height - 1; |
---|
147 | |
---|
148 | if(x2 < 0 || y2 < 0 || x > xmax || y > ymax) |
---|
149 | return 0; |
---|
150 | |
---|
151 | /* Draw edges */ |
---|
152 | if(y >= 0) |
---|
153 | for(i = x < 0 ? 1 : x + 1; i < x2 && i < xmax; i++) |
---|
154 | caca_put_char(cv, i, y, 0x2500); /* ─ */ |
---|
155 | |
---|
156 | if(y2 <= ymax) |
---|
157 | for(i = x < 0 ? 1 : x + 1; i < x2 && i < xmax; i++) |
---|
158 | caca_put_char(cv, i, y2, 0x2500); /* ─ */ |
---|
159 | |
---|
160 | if(x >= 0) |
---|
161 | for(j = y < 0 ? 1 : y + 1; j < y2 && j < ymax; j++) |
---|
162 | caca_put_char(cv, x, j, 0x2502); /* │ */ |
---|
163 | |
---|
164 | if(x2 <= xmax) |
---|
165 | for(j = y < 0 ? 1 : y + 1; j < y2 && j < ymax; j++) |
---|
166 | caca_put_char(cv, x2, j, 0x2502); /* │ */ |
---|
167 | |
---|
168 | /* Draw corners */ |
---|
169 | caca_put_char(cv, x, y, 0x250c); /* ┌ */ |
---|
170 | caca_put_char(cv, x, y2, 0x2514); /* └ */ |
---|
171 | caca_put_char(cv, x2, y, 0x2510); /* ┐ */ |
---|
172 | caca_put_char(cv, x2, y2, 0x2518); /* ┘ */ |
---|
173 | |
---|
174 | return 0; |
---|
175 | } |
---|
176 | |
---|
177 | /** \brief Fill a box on the canvas using the given character. |
---|
178 | * |
---|
179 | * This function never fails. |
---|
180 | * |
---|
181 | * \param cv The handle to the libcaca canvas. |
---|
182 | * \param x X coordinate of the upper-left corner of the box. |
---|
183 | * \param y Y coordinate of the upper-left corner of the box. |
---|
184 | * \param w Width of the box. |
---|
185 | * \param h Height of the box. |
---|
186 | * \param ch UTF-32 character to be used to draw the box. |
---|
187 | * \return This function always returns 0. |
---|
188 | */ |
---|
189 | int caca_fill_box(caca_canvas_t *cv, int x, int y, int w, int h, |
---|
190 | uint32_t ch) |
---|
191 | { |
---|
192 | int i, j, xmax, ymax; |
---|
193 | |
---|
194 | int x2 = x + w - 1; |
---|
195 | int y2 = y + h - 1; |
---|
196 | |
---|
197 | if(x > x2) |
---|
198 | { |
---|
199 | int tmp = x; |
---|
200 | x = x2; x2 = tmp; |
---|
201 | } |
---|
202 | |
---|
203 | if(y > y2) |
---|
204 | { |
---|
205 | int tmp = y; |
---|
206 | y = y2; y2 = tmp; |
---|
207 | } |
---|
208 | |
---|
209 | xmax = cv->width - 1; |
---|
210 | ymax = cv->height - 1; |
---|
211 | |
---|
212 | if(x2 < 0 || y2 < 0 || x > xmax || y > ymax) |
---|
213 | return 0; |
---|
214 | |
---|
215 | if(x < 0) x = 0; |
---|
216 | if(y < 0) y = 0; |
---|
217 | if(x2 > xmax) x2 = xmax; |
---|
218 | if(y2 > ymax) y2 = ymax; |
---|
219 | |
---|
220 | for(j = y; j <= y2; j++) |
---|
221 | for(i = x; i <= x2; i++) |
---|
222 | caca_put_char(cv, i, j, ch); |
---|
223 | |
---|
224 | return 0; |
---|
225 | } |
---|
226 | |
---|