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/*
* Copyright 2008 Chris Wilson
*
* 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
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON 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: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
double dash[2] = { 8, 4 };
double radius;
radius = width;
if (height > radius)
radius = height;
/* fill the background using a big circle */
cairo_arc (cr, 0, 0, 4 * radius, 0, 2 * M_PI);
cairo_fill (cr);
/* a rotated square - overlapping the corners */
cairo_save (cr);
cairo_save (cr);
cairo_translate (cr, width/2, height/2);
cairo_rotate (cr, M_PI/4);
cairo_scale (cr, M_SQRT2, M_SQRT2);
cairo_rectangle (cr, -width/2, -height/2, width, height);
cairo_restore (cr);
cairo_set_source_rgba (cr, 0, 1, 0, .5);
cairo_set_line_width (cr, radius/2);
cairo_stroke (cr);
cairo_restore (cr);
/* and put some circles in the corners */
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_new_sub_path (cr);
cairo_arc (cr, 0, 0, radius/4, 0, 2 * M_PI);
cairo_new_sub_path (cr);
cairo_arc (cr, width, 0, radius/4, 0, 2 * M_PI);
cairo_new_sub_path (cr);
cairo_arc (cr, width, height, radius/4, 0, 2 * M_PI);
cairo_new_sub_path (cr);
cairo_arc (cr, 0, height, radius/4, 0, 2 * M_PI);
cairo_fill (cr);
/* a couple of pixel-aligned lines */
cairo_set_source_rgb (cr, 0, 0, 1);
cairo_move_to (cr, width/2, -height);
cairo_rel_line_to (cr, 0, 3*height);
cairo_move_to (cr, -width, height/2);
cairo_rel_line_to (cr, 3*width, 0);
cairo_stroke (cr);
/* a couple of dashed diagonals */
cairo_save (cr);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_set_dash (cr, dash, 2, 0);
cairo_set_line_width (cr, 4.);
cairo_move_to (cr, -width, -height);
cairo_line_to (cr, width+width, height+height);
cairo_move_to (cr, width+width, -height);
cairo_line_to (cr, -width, height+height);
cairo_stroke (cr);
cairo_restore (cr);
return CAIRO_TEST_SUCCESS;
}
CAIRO_TEST (clipped_trapezoids,
"Tests clipping of trapezoids larger than the surface",
"clip", /* keywords */
NULL, /* requirements */
40, 40,
NULL, draw)
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