2 * Copyright © 2005 Red Hat, Inc.
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.
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.
23 * Author: Carl D. Worth <cworth@cworth.org>
26 #include "cairo-test.h"
32 static cairo_test_status_t
33 draw (cairo_t *cr, cairo_antialias_t antialias)
35 cairo_text_extents_t extents;
36 cairo_font_options_t *font_options;
37 const char black[] = "black", blue[] = "blue";
39 cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
42 cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
43 CAIRO_FONT_SLANT_NORMAL,
44 CAIRO_FONT_WEIGHT_NORMAL);
45 cairo_set_font_size (cr, TEXT_SIZE);
47 font_options = cairo_font_options_create ();
48 cairo_get_font_options (cr, font_options);
49 cairo_font_options_set_antialias (font_options, antialias);
50 cairo_font_options_set_subpixel_order (font_options, CAIRO_SUBPIXEL_ORDER_RGB);
51 cairo_set_font_options (cr, font_options);
53 cairo_font_options_destroy (font_options);
55 cairo_set_source_rgb (cr, 0, 0, 0); /* black */
56 cairo_text_extents (cr, black, &extents);
57 cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
58 cairo_show_text (cr, black);
59 cairo_translate (cr, 0, -extents.y_bearing + 1);
61 cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
62 cairo_text_extents (cr, blue, &extents);
63 cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
64 cairo_show_text (cr, blue);
66 return CAIRO_TEST_SUCCESS;
69 static cairo_test_status_t
70 draw_gray (cairo_t *cr, int width, int height)
72 return draw (cr, CAIRO_ANTIALIAS_GRAY);
75 static cairo_test_status_t
76 draw_none (cairo_t *cr, int width, int height)
78 return draw (cr, CAIRO_ANTIALIAS_NONE);
81 static cairo_test_status_t
82 draw_subpixel (cairo_t *cr, int width, int height)
84 return draw (cr, CAIRO_ANTIALIAS_SUBPIXEL);
87 CAIRO_TEST (text_antialias_gray,
88 "Tests text rendering with grayscale antialiasing",
89 "text", /* keywords */
90 "target=raster", /* requirements */
94 CAIRO_TEST (text_antialias_none,
95 "Tests text rendering with no antialiasing",
96 "text", /* keywords */
97 "target=raster", /* requirements */
101 CAIRO_TEST (text_antialias_subpixel,
102 "Tests text rendering with subpixel antialiasing",
103 "text", /* keywords */
104 "target=raster", /* requirements */