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/*
* Copyright © 2015 Adrian Johnson
*
* 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: Adrian Johnson <ajohnson@redneon.com>
*/
#include "cairo-test.h"
#define CELL_WIDTH 20
#define CELL_HEIGHT 20
#define PAD 2
#define IMAGE_WIDTH (CELL_WIDTH*3 + PAD*4)
#define IMAGE_HEIGHT (CELL_HEIGHT*4 + PAD*5)
static void
draw_lines(cairo_t *cr)
{
/* horizontal line */
cairo_translate (cr, PAD, PAD);
cairo_move_to (cr, 0, CELL_HEIGHT/2);
cairo_line_to (cr, CELL_WIDTH, CELL_HEIGHT/2);
cairo_stroke (cr);
/* vertical line */
cairo_translate (cr, 0, CELL_HEIGHT + PAD);
cairo_move_to (cr, CELL_WIDTH/2, 0);
cairo_line_to (cr, CELL_WIDTH/2, CELL_HEIGHT);
cairo_stroke (cr);
/* diagonal line */
cairo_translate (cr, 0, CELL_HEIGHT + PAD);
cairo_move_to (cr, 0, CELL_HEIGHT);
cairo_line_to (cr, CELL_WIDTH, 0);
cairo_stroke (cr);
/* curved line */
cairo_translate (cr, 0, CELL_HEIGHT + PAD);
cairo_move_to (cr, CELL_WIDTH, 0);
cairo_curve_to (cr, 0, 0,
CELL_WIDTH, CELL_HEIGHT,
0, CELL_HEIGHT);
cairo_stroke (cr);
}
#define FIXED_POINT_MIN (1.0/256)
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_save (cr);
cairo_set_line_width (cr, FIXED_POINT_MIN*10.0);
draw_lines (cr);
cairo_restore (cr);
cairo_translate (cr, CELL_WIDTH + PAD, 0);
cairo_save (cr);
cairo_set_line_width (cr, FIXED_POINT_MIN);
draw_lines (cr);
cairo_restore (cr);
cairo_translate (cr, CELL_WIDTH + PAD, 0);
cairo_save (cr);
cairo_set_line_width (cr, FIXED_POINT_MIN/10.0);
draw_lines (cr);
cairo_restore (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (thin_lines,
"Tests that very thin lines are output to vector surfaces",
"stroke", /* keywords */
NULL, /* requirements */
IMAGE_WIDTH, IMAGE_HEIGHT,
NULL, draw)
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