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/* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */
/*
* Copyright 2009 Chris Wilson
* Copyright 2010 Andrea Canciani
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "cairo-test.h"
#define WIDTH 60
#define HEIGHT 60
static void
stroke (cairo_t *cr)
{
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_IN);
cairo_set_source_rgb (cr, 0, 0.7, 0);
cairo_arc (cr, 10, 10, 7.5, 0, 2 * M_PI);
cairo_move_to (cr, 0, 20);
cairo_line_to (cr, 20, 0);
cairo_stroke (cr);
}
static void
fill (cairo_t *cr)
{
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_paint (cr);
cairo_set_operator (cr, CAIRO_OPERATOR_IN);
cairo_set_source_rgb (cr, 0, 0.7, 0);
cairo_new_sub_path (cr);
cairo_arc (cr, 10, 10, 8.5, 0, 2 * M_PI);
cairo_new_sub_path (cr);
cairo_arc_negative (cr, 10, 10, 6.5, 2 * M_PI, 0);
cairo_move_to (cr, -1, 19);
cairo_line_to (cr, 1, 21);
cairo_line_to (cr, 21, 1);
cairo_line_to (cr, 19, -1);
cairo_line_to (cr, -1, 19);
cairo_fill (cr);
}
static void
clip_simple (cairo_t *cr)
{
cairo_rectangle (cr, 0, 0, 20, 20);
cairo_clip (cr);
}
static void
clip_unaligned (cairo_t *cr)
{
cairo_rectangle (cr, 0.5, 0.5, 20, 20);
cairo_clip (cr);
}
static void
clip_aligned (cairo_t *cr)
{
cairo_fill_rule_t orig_rule;
orig_rule = cairo_get_fill_rule (cr);
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_rectangle (cr, 0, 0, 20, 20);
cairo_rectangle (cr, 3, 3, 10, 10);
cairo_rectangle (cr, 7, 7, 10, 10);
cairo_clip (cr);
cairo_set_fill_rule (cr, orig_rule);
}
static void
clip_mask (cairo_t *cr)
{
cairo_arc (cr, 10, 10, 10, 0, 2 * M_PI);
cairo_new_sub_path (cr);
cairo_arc_negative (cr, 10, 10, 5, 2 * M_PI, 0);
cairo_new_sub_path (cr);
cairo_arc (cr, 10, 10, 2, 0, 2 * M_PI);
cairo_clip (cr);
}
static void (* const clip_funcs[])(cairo_t *cr) = {
clip_simple,
clip_unaligned,
clip_aligned,
clip_mask
};
static double translations[][2] = {
{ 10, 10 },
{ WIDTH, 0 },
{ -WIDTH, HEIGHT },
{ WIDTH, 0 }
};
static cairo_test_status_t
draw (cairo_t *cr, void (*shapes)(cairo_t *))
{
unsigned int i;
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
for (i = 0; i < ARRAY_LENGTH (clip_funcs); i++) {
cairo_translate (cr, translations[i][0], translations[i][1]);
cairo_save (cr);
cairo_scale (cr, 2, 2);
clip_funcs[i] (cr);
shapes (cr);
cairo_restore (cr);
}
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
draw_stroke (cairo_t *cr, int width, int height)
{
return draw (cr, stroke);
}
static cairo_test_status_t
draw_fill_nz (cairo_t *cr, int width, int height)
{
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
return draw (cr, fill);
}
static cairo_test_status_t
draw_fill_eo (cairo_t *cr, int width, int height)
{
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
return draw (cr, fill);
}
CAIRO_TEST (clip_stroke_unbounded,
"Tests unbounded stroke through complex clips.",
"clip, stroke, unbounded", /* keywords */
NULL, /* requirements */
2 * WIDTH, 2 * HEIGHT,
NULL, draw_stroke)
CAIRO_TEST (clip_fill_nz_unbounded,
"Tests unbounded fill through complex clips (with winding fill rule).",
"clip, fill, unbounded", /* keywords */
NULL, /* requirements */
2 * WIDTH, 2 * HEIGHT,
NULL, draw_fill_nz)
CAIRO_TEST (clip_fill_eo_unbounded,
"Tests unbounded fill through complex clips (with even-odd fill rule).",
"clip, fill, unbounded", /* keywords */
NULL, /* requirements */
2 * WIDTH, 2 * HEIGHT,
NULL, draw_fill_eo)