blob: f97db3f622a194b2b21a827e5472a09157f2415f [file] [log] [blame]
/*
* Copyright © 2006 Novell, Inc.
*
* 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
* Novell, Inc. not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Novell, Inc. makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* NOVELL, 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: Robert O'Callahan <rocallahan@novell.com>
*/
#include "cairo-test.h"
#include <stddef.h>
static cairo_bool_t
check_count (const cairo_test_context_t *ctx,
const char *message,
cairo_rectangle_list_t *list, int expected)
{
if (list->status != CAIRO_STATUS_SUCCESS) {
cairo_test_log (ctx, "Error: %s; cairo_copy_clip_rectangle_list failed with \"%s\"\n",
message, cairo_status_to_string(list->status));
return 0;
}
if (list->num_rectangles == expected)
return 1;
cairo_test_log (ctx, "Error: %s; expected %d rectangles, got %d\n", message,
expected, list->num_rectangles);
return 0;
}
static cairo_bool_t
check_unrepresentable (const cairo_test_context_t *ctx, const char *message, cairo_rectangle_list_t *list)
{
if (list->status != CAIRO_STATUS_CLIP_NOT_REPRESENTABLE) {
cairo_test_log (ctx, "Error: %s; cairo_copy_clip_rectangle_list got unexpected result \"%s\"\n"
" (we expected CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)",
message, cairo_status_to_string(list->status));
return 0;
}
return 1;
}
static cairo_bool_t
check_rectangles_contain (const cairo_test_context_t *ctx,
const char *message,
cairo_rectangle_list_t *list,
double x, double y, double width, double height)
{
int i;
for (i = 0; i < list->num_rectangles; ++i) {
if (list->rectangles[i].x == x && list->rectangles[i].y == y &&
list->rectangles[i].width == width && list->rectangles[i].height == height)
return 1;
}
cairo_test_log (ctx, "Error: %s; rectangle list does not contain rectangle %f,%f,%f,%f\n",
message, x, y, width, height);
return 0;
}
static cairo_bool_t
check_clip_extents (const cairo_test_context_t *ctx,
const char *message, cairo_t *cr,
double x, double y, double width, double height)
{
double ext_x1, ext_y1, ext_x2, ext_y2;
cairo_clip_extents (cr, &ext_x1, &ext_y1, &ext_x2, &ext_y2);
if (ext_x1 == x && ext_y1 == y && ext_x2 == x + width && ext_y2 == y + height)
return 1;
if (width == 0.0 && height == 0.0 && ext_x1 == ext_x2 && ext_y1 == ext_y2)
return 1;
cairo_test_log (ctx, "Error: %s; clip extents %f,%f,%f,%f should be %f,%f,%f,%f\n",
message, ext_x1, ext_y1, ext_x2 - ext_x1, ext_y2 - ext_y1,
x, y, width, height);
return 0;
}
#define SIZE 100
static cairo_test_status_t
preamble (cairo_test_context_t *ctx)
{
cairo_surface_t *surface;
cairo_t *cr;
cairo_rectangle_list_t *rectangle_list;
const char *phase;
cairo_bool_t completed = 0;
cairo_status_t status;
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, SIZE, SIZE);
cr = cairo_create (surface);
cairo_surface_destroy (surface);
/* first, test basic stuff. This should not be clipped, it should
return the surface rectangle. */
phase = "No clip set";
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr, 0, 0, SIZE, SIZE) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 0, 0, SIZE, SIZE))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
/* We should get the same results after applying a clip that contains the
existing clip. */
phase = "Clip beyond surface extents";
cairo_save (cr);
cairo_rectangle (cr, -10, -10, SIZE + 20 , SIZE + 20);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr, 0, 0, SIZE, SIZE) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 0, 0, SIZE, SIZE))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
/* Test simple clip rect. */
phase = "Simple clip rect";
cairo_save (cr);
cairo_rectangle (cr, 10, 10, 80, 80);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr, 10, 10, 80, 80) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 10, 10, 80, 80))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
/* Test everything clipped out. */
phase = "All clipped out";
cairo_save (cr);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 0) ||
! check_clip_extents (ctx, phase, cr, 0, 0, 0, 0))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
/* test two clip rects */
phase = "Two clip rects";
cairo_save (cr);
cairo_rectangle (cr, 10, 10, 10, 10);
cairo_rectangle (cr, 20, 20, 10, 10);
cairo_clip (cr);
cairo_rectangle (cr, 15, 15, 10, 10);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 2) ||
! check_clip_extents (ctx, phase, cr, 15, 15, 10, 10) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 15, 15, 5, 5) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 20, 20, 5, 5))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
/* test non-rectangular clip */
phase = "Nonrectangular clip";
cairo_save (cr);
cairo_move_to (cr, 0, 0);
cairo_line_to (cr, 100, 100);
cairo_line_to (cr, 100, 0);
cairo_close_path (cr);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
/* can't get this in one tight user-space rectangle */
if (! check_unrepresentable (ctx, phase, rectangle_list) ||
! check_clip_extents (ctx, phase, cr, 0, 0, 100, 100))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
phase = "User space, simple scale, getting clip with same transform";
cairo_save (cr);
cairo_scale (cr, 2, 2);
cairo_rectangle (cr, 5, 5, 40, 40);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr, 5, 5, 40, 40) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 5, 5, 40, 40))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
phase = "User space, simple scale, getting clip with no transform";
cairo_save (cr);
cairo_save (cr);
cairo_scale (cr, 2, 2);
cairo_rectangle (cr, 5, 5, 40, 40);
cairo_restore (cr);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_count (ctx, phase, rectangle_list, 1) ||
! check_clip_extents (ctx, phase, cr, 10, 10, 80, 80) ||
! check_rectangles_contain (ctx, phase, rectangle_list, 10, 10, 80, 80))
{
goto FAIL;
}
cairo_rectangle_list_destroy (rectangle_list);
cairo_restore (cr);
phase = "User space, rotation, getting clip with no transform";
cairo_save (cr);
cairo_save (cr);
cairo_rotate (cr, 12);
cairo_rectangle (cr, 5, 5, 40, 40);
cairo_restore (cr);
cairo_clip (cr);
rectangle_list = cairo_copy_clip_rectangle_list (cr);
if (! check_unrepresentable (ctx, phase, rectangle_list))
goto FAIL;
completed = 1;
FAIL:
cairo_rectangle_list_destroy (rectangle_list);
status = cairo_status (cr);
cairo_destroy (cr);
if (!completed)
return CAIRO_TEST_FAILURE;
return cairo_test_status_from_status (ctx, status);
}
CAIRO_TEST (get_clip,
"Test cairo_copy_clip_rectangle_list and cairo_clip_extents",
"clip, extents", /* keywords */
NULL, /* requirements */
0, 0,
preamble, NULL)