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/*
* Copyright 2010 Red Hat Inc.
*
* 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: Benjamin Otte <otte@gnome.org>
*/
#include "cairo-test.h"
#define TARGET_SIZE 10
#define SUB_SIZE 15
#define SUB_OFFSET -5
#define PAINT_OFFSET SUB_SIZE
#define PAINT_SIZE (3 * SUB_SIZE)
static cairo_content_t contents[] = { CAIRO_CONTENT_ALPHA,
CAIRO_CONTENT_COLOR,
CAIRO_CONTENT_COLOR_ALPHA };
#define N_CONTENTS ARRAY_LENGTH (contents)
#define N_PADS (CAIRO_EXTEND_PAD + 1)
static cairo_surface_t *
create_target (cairo_surface_t *similar_to,
cairo_content_t content)
{
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_surface_create_similar (similar_to,
content,
TARGET_SIZE, TARGET_SIZE);
cr = cairo_create (surface);
cairo_test_paint_checkered (cr);
cairo_destroy (cr);
return surface;
}
static cairo_test_status_t
check_surface_extents (const cairo_test_context_t *ctx,
cairo_surface_t * surface,
double x,
double y,
double width,
double height)
{
double x1, y1, x2, y2;
cairo_t *cr;
cr = cairo_create (surface);
cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
cairo_destroy (cr);
if (x != x1 ||
y != y1 ||
width != x2 - x1 ||
height != y2 - y1) {
cairo_test_log (ctx,
"surface extents should be (%g, %g, %g, %g), but are (%g, %g, %g, %g)\n",
x, y, width, height,
x1, y1, x2 - x1, y2 - y1);
return CAIRO_TEST_FAILURE;
}
return CAIRO_TEST_SUCCESS;
}
static cairo_test_status_t
draw_for_size (cairo_t *cr,
double x,
double y)
{
cairo_surface_t *target, *subsurface;
cairo_extend_t extend;
cairo_test_status_t check, result = CAIRO_TEST_SUCCESS;
unsigned int content;
for (content = 0; content < N_CONTENTS; content++) {
cairo_save (cr);
/* create a target surface for our subsurface */
target = create_target (cairo_get_target (cr),
contents[content]);
/* create a subsurface that extends the target surface */
subsurface = cairo_surface_create_for_rectangle (target,
x, y,
SUB_SIZE, SUB_SIZE);
/* ensure the extents are ok */
check = check_surface_extents (cairo_test_get_context (cr),
subsurface,
0, 0,
SUB_SIZE, SUB_SIZE);
if (result == CAIRO_TEST_SUCCESS)
result = check;
/* paint this surface with all extend modes. */
for (extend = 0; extend < N_PADS; extend++) {
cairo_save (cr);
cairo_rectangle (cr, 0, 0, PAINT_SIZE, PAINT_SIZE);
cairo_clip (cr);
cairo_set_source_surface (cr, subsurface, PAINT_OFFSET, PAINT_OFFSET);
cairo_pattern_set_extend (cairo_get_source (cr), extend);
cairo_paint (cr);
cairo_restore (cr);
cairo_translate (cr, PAINT_SIZE + TARGET_SIZE, 0);
}
cairo_surface_destroy (subsurface);
cairo_surface_destroy (target);
cairo_restore (cr);
cairo_translate (cr, 0, PAINT_SIZE + TARGET_SIZE);
}
return result;
}
static cairo_test_status_t
draw (cairo_t *cr, int width, int height)
{
cairo_test_status_t check, result = CAIRO_TEST_SUCCESS;
/* paint background in nice gray */
cairo_set_source_rgb (cr, 0.51613, 0.55555, 0.51613);
cairo_paint (cr);
/* Use CAIRO_OPERATOR_SOURCE in the tests so we get the actual
* contents of the subsurface */
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
result = draw_for_size (cr, SUB_OFFSET, SUB_OFFSET);
check = draw_for_size (cr, 0, 0);
if (result == CAIRO_TEST_SUCCESS)
result = check;
return result;
}
CAIRO_TEST (subsurface_outside_target,
"Tests contents of subsurfaces outside target area",
"subsurface, pad", /* keywords */
"target=raster", /* FIXME! recursion bug in subsurface/snapshot (with pdf backend) */ /* requirements */
(PAINT_SIZE + TARGET_SIZE) * N_PADS - TARGET_SIZE,
(PAINT_SIZE + TARGET_SIZE) * N_CONTENTS * 2 - TARGET_SIZE,
NULL, draw)
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