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mtk: Add a Region type

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Currently, we use cairo_region_t despite it being a thing wrapper around pixman_region_32
In order to push for a cairo-less and wayland only build in the future, replace
cairo_region_t with a thin wrapper that is almost a copy of the upstream cairo implementation

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3292>
This commit is contained in:
Bilal Elmoussaoui
2023-09-21 12:05:24 +02:00
committed by Marge Bot
parent 058afb67f4
commit 7c98910488
9 changed files with 606 additions and 0 deletions
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7
src/tests/mtk/meson.build
View File

@ -6,4 +6,11 @@ test_cases += [
'mtk/rectangle-tests.c',
],
},
{
'name': 'mtk-region',
'suite': 'unit',
'sources': [
'mtk/region-tests.c',
]
}
]

90
src/tests/mtk/region-tests.c Normal file
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@ -0,0 +1,90 @@
/*
* Copyright (C) 2023 Bilal Elmoussaoui
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "mtk/mtk.h"
#include <glib.h>
static void
test_contains_point (void)
{
g_autoptr (MtkRegion) r1 = NULL;
r1 = mtk_region_create_rectangle (mtk_rectangle_new (0, 0, 100, 100));
g_assert (!mtk_region_contains_point (r1, 200, 200));
g_assert (mtk_region_contains_point (r1, 50, 50));
}
/* A re-implementation of a pixman translation test */
#define LARGE 32000
static void
test_translate (void)
{
MtkRectangle rect = MTK_RECTANGLE_INIT (-LARGE, -LARGE, LARGE, LARGE);
g_autoptr (MtkRegion) r1, r2 = NULL;
r1 = mtk_region_create_rectangles (&rect, 1);
g_assert_cmpint (mtk_region_num_rectangles (r1), ==, 1);
r2 = mtk_region_create_rectangle (&rect);
g_assert_cmpint (mtk_region_num_rectangles (r2), ==, 1);
g_assert (mtk_region_equal (r1, r2));
mtk_region_translate (r1, -LARGE, LARGE);
mtk_region_translate (r1, LARGE, -LARGE);
g_assert (mtk_region_equal (r1, r2));
}
static void
test_region (void)
{
g_autoptr (MtkRegion) r1 = NULL;
r1 = mtk_region_create ();
g_assert (mtk_region_is_empty (r1));
MtkRectangle rect = MTK_RECTANGLE_INIT (5, 5, 20, 20);
mtk_region_union_rectangle (r1, &rect);
g_assert (!mtk_region_is_empty (r1));
MtkRectangle extents = mtk_region_get_extents (r1);
g_assert (mtk_rectangle_equal (&extents, &rect));
mtk_region_translate (r1, 15, 20);
extents = mtk_region_get_extents (r1);
g_assert_cmpint (extents.x, ==, rect.x + 15);
g_assert_cmpint (extents.y, ==, rect.y + 20);
g_assert_cmpint (extents.width, ==, rect.width);
g_assert_cmpint (extents.height, ==, rect.height);
}
int
main (int argc,
char **argv)
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/mtk/region/region", test_region);
g_test_add_func ("/mtk/region/contains-point", test_contains_point);
g_test_add_func ("/mtk/region/translate", test_translate);
return g_test_run ();
}