| /* |
| * 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) |