1 /*
2 * Copyright © 2005 Red Hat, Inc.
3 *
4 * Permission to use, copy, modify, distribute, and sell this software
5 * and its documentation for any purpose is hereby granted without
6 * fee, provided that the above copyright notice appear in all copies
7 * and that both that copyright notice and this permission notice
8 * appear in supporting documentation, and that the name of
9 * Red Hat, Inc. not be used in advertising or publicity pertaining to
10 * distribution of the software without specific, written prior
11 * permission. Red Hat, Inc. makes no representations about the
12 * suitability of this software for any purpose. It is provided "as
13 * is" without express or implied warranty.
14 *
15 * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
16 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
17 * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
18 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
19 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
20 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
21 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22 *
23 * Author: Carl D. Worth <cworth@cworth.org>
24 */
25
26 #include "cairo-test.h"
27
28 #define LINE_WIDTH 10.
29 #define SIZE (5 * LINE_WIDTH)
30 #define PAD (2 * LINE_WIDTH)
31
32 static void
make_path(cairo_t * cr)33 make_path (cairo_t *cr)
34 {
35 cairo_move_to (cr, 0., 0.);
36 cairo_rel_line_to (cr, 0., SIZE);
37 cairo_rel_line_to (cr, SIZE, 0.);
38 cairo_close_path (cr);
39
40 cairo_move_to (cr, 5 * LINE_WIDTH, 3 * LINE_WIDTH);
41 cairo_rel_line_to (cr, 0., -3 * LINE_WIDTH);
42 cairo_rel_line_to (cr, -3 * LINE_WIDTH, 0.);
43 }
44
45 static void
draw_caps_joins(cairo_t * cr)46 draw_caps_joins (cairo_t *cr)
47 {
48 cairo_save (cr);
49
50 cairo_translate (cr, PAD, PAD);
51
52 make_path (cr);
53 cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
54 cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
55 cairo_stroke (cr);
56
57 cairo_translate (cr, SIZE + PAD, 0.);
58
59 make_path (cr);
60 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
61 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
62 cairo_stroke (cr);
63
64 cairo_translate (cr, SIZE + PAD, 0.);
65
66 make_path (cr);
67 cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
68 cairo_set_line_join (cr, CAIRO_LINE_JOIN_MITER);
69 cairo_stroke (cr);
70
71 cairo_restore (cr);
72 }
73
74 static cairo_test_status_t
draw(cairo_t * cr,float line_width)75 draw (cairo_t *cr, float line_width)
76 {
77 /* We draw in the default black, so paint white first. */
78 cairo_save (cr);
79 cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
80 cairo_paint (cr);
81 cairo_restore (cr);
82
83 cairo_set_line_width (cr, line_width);
84
85 draw_caps_joins (cr);
86
87 /* and reflect to generate the opposite vertex ordering */
88 cairo_translate (cr, 0, 2 * (PAD + SIZE) + PAD);
89 cairo_scale (cr, 1, -1);
90
91 draw_caps_joins (cr);
92
93 return CAIRO_TEST_SUCCESS;
94 }
95
96 static cairo_test_status_t
draw_10(cairo_t * cr,int width,int height)97 draw_10 (cairo_t *cr, int width, int height)
98 {
99 return draw (cr, LINE_WIDTH);
100 }
101
102 static cairo_test_status_t
draw_2(cairo_t * cr,int width,int height)103 draw_2 (cairo_t *cr, int width, int height)
104 {
105 return draw (cr, 2.0);
106 }
107
108 static cairo_test_status_t
draw_1(cairo_t * cr,int width,int height)109 draw_1 (cairo_t *cr, int width, int height)
110 {
111 return draw (cr, 1.0);
112 }
113
114 static cairo_test_status_t
draw_05(cairo_t * cr,int width,int height)115 draw_05 (cairo_t *cr, int width, int height)
116 {
117 return draw (cr, 0.5);
118 }
119
120 CAIRO_TEST (caps_joins,
121 "Test caps and joins",
122 "stroke", /* keywords */
123 NULL, /* requirements */
124 3 * (PAD + SIZE) + PAD,
125 2 * (PAD + SIZE) + PAD,
126 NULL, draw_10)
127
128 CAIRO_TEST (caps_joins_2,
129 "Test caps and joins with default line width",
130 "stroke", /* keywords */
131 NULL, /* requirements */
132 3 * (PAD + SIZE) + PAD,
133 2 * (PAD + SIZE) + PAD,
134 NULL, draw_2)
135
136 CAIRO_TEST (caps_joins_1,
137 "Test caps and joins with hairlines",
138 "stroke", /* keywords */
139 NULL, /* requirements */
140 3 * (PAD + SIZE) + PAD,
141 2 * (PAD + SIZE) + PAD,
142 NULL, draw_1)
143
144 CAIRO_TEST (caps_joins_05,
145 "Test caps and joins with fine lines",
146 "stroke", /* keywords */
147 NULL, /* requirements */
148 3 * (PAD + SIZE) + PAD,
149 2 * (PAD + SIZE) + PAD,
150 NULL, draw_05)
151