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/*
* Copyright © 2022 Behdad Esfahbod
*
* 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.
*
* Contributor(s):
* Behdad Esfahbod <behdad@behdad.org>
*/
/* Test that user-fonts can subpixel positioning.
*/
#include "cairo-test.h"
#define BORDER 10
#define REPEAT 16
#define TEXT_SIZE 24
#define WIDTH (TEXT_SIZE * REPEAT + 2*BORDER)
#define HEIGHT (TEXT_SIZE + 2*BORDER)
static cairo_status_t
test_scaled_font_render_glyph (cairo_scaled_font_t *scaled_font,
unsigned long glyph,
cairo_t *cr,
cairo_text_extents_t *metrics)
{
cairo_rectangle (cr, 0, .45, 1., .1);
cairo_fill (cr);
return CAIRO_STATUS_SUCCESS;
}
static cairo_font_face_t *
_user_font_face_create (void)
{
cairo_font_face_t *user_font_face;
user_font_face = cairo_user_font_face_create ();
cairo_user_font_face_set_render_glyph_func (user_font_face, test_scaled_font_render_glyph);
return user_font_face;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_font_face_t *font_face;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
font_face = _user_font_face_create ();
cairo_set_font_face (cr, font_face);
cairo_font_face_destroy (font_face);
cairo_set_source_rgb (cr, 0, 0, 0);
cairo_set_font_size (cr, TEXT_SIZE);
for (unsigned i = 0; i < REPEAT; i++)
{
cairo_move_to (cr, BORDER + TEXT_SIZE * i, BORDER + i * .1);
cairo_show_text (cr, "-");
}
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (user_font_subpixel,
"Tests user font subpixel rendering",
"font, user-font", /* keywords */
"cairo >= 1.17.4", /* requirements */
WIDTH, HEIGHT,
NULL, draw)
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