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/*
* Copyright © 2005 Red Hat, Inc.
* Copyright © 2011 Uli Schlachter
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Red Hat, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Red Hat, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
* RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
* Author: Uli Schlachter <psychon@znc.in>
* Based on test/text-antialias.c
* Author: Carl D. Worth <cworth@cworth.org>
*/
#include "cairo-test.h"
#define WIDTH 31
#define HEIGHT 22
#define TEXT_SIZE 12
static cairo_test_status_t
draw (cairo_t *cr, cairo_subpixel_order_t order)
{
cairo_text_extents_t extents;
cairo_font_options_t *font_options;
const char black[] = "black", blue[] = "blue";
cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
cairo_paint (cr);
cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size (cr, TEXT_SIZE);
font_options = cairo_font_options_create ();
cairo_get_font_options (cr, font_options);
cairo_font_options_set_antialias (font_options, CAIRO_ANTIALIAS_SUBPIXEL);
cairo_font_options_set_subpixel_order (font_options, order);
cairo_set_font_options (cr, font_options);
cairo_font_options_destroy (font_options);
cairo_set_source_rgb (cr, 0, 0, 0); /* black */
cairo_text_extents (cr, black, &extents);
cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
cairo_show_text (cr, black);
cairo_translate (cr, 0, -extents.y_bearing + 1);
cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
cairo_text_extents (cr, blue, &extents);
cairo_show_text (cr, blue);
return CAIRO_TEST_SUCCESS;
}
draw_rgb (cairo_t *cr, int width, int height)
return draw (cr, CAIRO_SUBPIXEL_ORDER_RGB);
draw_bgr (cairo_t *cr, int width, int height)
return draw (cr, CAIRO_SUBPIXEL_ORDER_BGR);
draw_vrgb (cairo_t *cr, int width, int height)
return draw (cr, CAIRO_SUBPIXEL_ORDER_VRGB);
draw_vbgr (cairo_t *cr, int width, int height)
return draw (cr, CAIRO_SUBPIXEL_ORDER_VBGR);
CAIRO_TEST (text_antialias_subpixel_rgb,
"Tests text rendering with rgb subpixel antialiasing",
"text", /* keywords */
"target=raster", /* requirements */
WIDTH, HEIGHT,
NULL, draw_rgb)
CAIRO_TEST (text_antialias_subpixel_bgr,
"Tests text rendering with bgr subpixel antialiasing",
NULL, draw_bgr)
CAIRO_TEST (text_antialias_subpixel_vrgb,
"Tests text rendering with vertical rgb subpixel antialiasing",
NULL, draw_vrgb)
CAIRO_TEST (text_antialias_subpixel_vbgr,
"Tests text rendering with vertical bgr subpixel antialiasing",
NULL, draw_vbgr)