summaryrefslogtreecommitdiff
path: root/test/get-path-extents.c
diff options
context:
space:
mode:
Diffstat (limited to 'test/get-path-extents.c')
-rw-r--r--test/get-path-extents.c443
1 files changed, 0 insertions, 443 deletions
diff --git a/test/get-path-extents.c b/test/get-path-extents.c
deleted file mode 100644
index 075fd6fd6..000000000
--- a/test/get-path-extents.c
+++ /dev/null
@@ -1,443 +0,0 @@
-/*
- * 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>
-#include <math.h>
-
-enum ExtentsType { FILL, STROKE, PATH };
-
-enum Relation { EQUALS, APPROX_EQUALS, CONTAINS };
-
-
-static cairo_bool_t within_tolerance(double x1, double y1,
- double x2, double y2,
- double expected_x1, double expected_y1,
- double expected_x2, double expected_y2,
- double tolerance)
-{
- return (fabs (expected_x1 - x1) < tolerance &&
- fabs (expected_y1 - y1) < tolerance &&
- fabs (expected_x2 - x2) < tolerance &&
- fabs (expected_y2 - y2) < tolerance);
-}
-
-static cairo_bool_t
-check_extents (const cairo_test_context_t *ctx,
- const char *message, cairo_t *cr, enum ExtentsType type,
- enum Relation relation,
- double x, double y, double width, double height)
-{
- double ext_x1, ext_y1, ext_x2, ext_y2;
- const char *type_string;
- const char *relation_string;
-
- switch (type) {
- default:
- case FILL:
- type_string = "fill";
- cairo_fill_extents (cr, &ext_x1, &ext_y1, &ext_x2, &ext_y2);
- break;
- case STROKE:
- type_string = "stroke";
- cairo_stroke_extents (cr, &ext_x1, &ext_y1, &ext_x2, &ext_y2);
- break;
- case PATH:
- type_string = "path";
- cairo_path_extents (cr, &ext_x1, &ext_y1, &ext_x2, &ext_y2);
- break;
- }
-
- /* ignore results after an error occurs */
- if (cairo_status (cr))
- return 1;
-
- switch (relation) {
- default:
- case EQUALS:
- relation_string = "equal";
- if (within_tolerance(x, y, x + width, y + height,
- ext_x1, ext_y1, ext_x2, ext_y2,
- cairo_get_tolerance(cr)))
- return 1;
- break;
- case APPROX_EQUALS:
- relation_string = "approx. equal";
- if (within_tolerance(x, y, x + width, y + height,
- ext_x1, ext_y1, ext_x2, ext_y2,
- 1.))
- return 1;
- break;
- case CONTAINS:
- relation_string = "contain";
- if (width == 0 || height == 0) {
- /* odd test that doesn't really test anything... */
- return 1;
- }
- if (ext_x1 <= x && ext_y1 <= y && ext_x2 >= x + width && ext_y2 >= y + height)
- return 1;
- break;
- }
-
- cairo_test_log (ctx, "Error: %s; %s extents (%g, %g) x (%g, %g) should %s (%g, %g) x (%g, %g)\n",
- message, type_string,
- ext_x1, ext_y1, ext_x2 - ext_x1, ext_y2 - ext_y1,
- relation_string,
- x, y, width, height);
- return 0;
-}
-
-static cairo_test_status_t
-draw (cairo_t *cr, int width, int height)
-{
- const cairo_test_context_t *ctx = cairo_test_get_context (cr);
- cairo_surface_t *surface;
- cairo_t *cr2;
- const char *phase;
- const char string[] = "The quick brown fox jumps over the lazy dog.";
- cairo_text_extents_t extents, scaled_font_extents;
- cairo_status_t status;
- int errors = 0;
-
- surface = cairo_surface_create_similar (cairo_get_group_target (cr),
- CAIRO_CONTENT_COLOR, 1000, 1000);
- /* don't use cr accidentally */
- cr = NULL;
- cr2 = cairo_create (surface);
- cairo_surface_destroy (surface);
-
- cairo_set_line_width (cr2, 10);
- cairo_set_line_join (cr2, CAIRO_LINE_JOIN_MITER);
- cairo_set_miter_limit (cr2, 100);
-
- phase = "No path";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 0, 0, 0, 0);
-
- cairo_save (cr2);
-
- cairo_new_path (cr2);
- cairo_move_to (cr2, 200, 400);
- cairo_close_path (cr2);
- phase = "Degenerate closed path";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_move_to (cr2, 200, 400);
- cairo_rel_line_to (cr2, 0., 0.);
- phase = "Degenerate line";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_move_to (cr2, 200, 400);
- cairo_rel_curve_to (cr2, 0., 0., 0., 0., 0., 0.);
- phase = "Degenerate curve";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_arc (cr2, 200, 400, 0., 0, 2 * M_PI);
- phase = "Degenerate arc (R=0)";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_arc_negative (cr2, 200, 400, 0., 0, 2 * M_PI);
- phase = "Degenerate negative arc (R=0)";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_arc (cr2, 200, 400, 10., 0, 0);
- phase = "Degenerate arc (Θ=0)";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 210, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_arc_negative (cr2, 200, 400, 10., 0, 0);
- phase = "Degenerate negative arc (Θ=0)";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 210, 400, 0, 0);
-
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- /* Test that with CAIRO_LINE_CAP_ROUND, we get "dots" from
- * cairo_move_to; cairo_rel_line_to(0,0) */
- cairo_save (cr2);
-
- cairo_set_line_cap (cr2, CAIRO_LINE_CAP_ROUND);
- cairo_set_line_width (cr2, 20);
-
- cairo_move_to (cr2, 200, 400);
- cairo_rel_line_to (cr2, 0, 0);
- phase = "Single 'dot'";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, APPROX_EQUALS, 190, 390, 20, 20);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 200, 400, 0, 0);
-
- /* Add another dot without starting a new path */
- cairo_move_to (cr2, 100, 500);
- cairo_rel_line_to (cr2, 0, 0);
- phase = "Multiple 'dots'";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, APPROX_EQUALS, 90, 390, 120, 120);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 100, 400, 100, 100);
-
- cairo_new_path (cr2);
-
- cairo_restore (cr2);
-
- /* http://bugs.freedesktop.org/show_bug.cgi?id=7965 */
- phase = "A horizontal, open path";
- cairo_save (cr2);
- cairo_set_line_cap (cr2, CAIRO_LINE_CAP_ROUND);
- cairo_set_line_join (cr2, CAIRO_LINE_JOIN_ROUND);
- cairo_move_to (cr2, 0, 180);
- cairo_line_to (cr2, 750, 180);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, -5, 175, 760, 10);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 0, 180, 750, 0);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "A vertical, open path";
- cairo_save (cr2);
- cairo_set_line_cap (cr2, CAIRO_LINE_CAP_ROUND);
- cairo_set_line_join (cr2, CAIRO_LINE_JOIN_ROUND);
- cairo_new_path (cr2);
- cairo_move_to (cr2, 180, 0);
- cairo_line_to (cr2, 180, 750);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 175, -5, 10, 760);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 180, 0, 0, 750);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "A degenerate open path";
- cairo_save (cr2);
- cairo_set_line_cap (cr2, CAIRO_LINE_CAP_ROUND);
- cairo_set_line_join (cr2, CAIRO_LINE_JOIN_ROUND);
- cairo_new_path (cr2);
- cairo_move_to (cr2, 180, 0);
- cairo_line_to (cr2, 180, 0);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 0, 0, 0, 0);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 175, -5, 10, 10);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 180, 0, 0, 0);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "Simple rect";
- cairo_save (cr2);
- cairo_rectangle (cr2, 10, 10, 80, 80);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 80, 80);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 5, 5, 90, 90);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 80, 80);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "Two rects";
- cairo_save (cr2);
- cairo_rectangle (cr2, 10, 10, 10, 10);
- cairo_rectangle (cr2, 20, 20, 10, 10);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 20, 20);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 5, 5, 30, 30);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 20, 20);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "Triangle";
- cairo_save (cr2);
- cairo_move_to (cr2, 10, 10);
- cairo_line_to (cr2, 90, 90);
- cairo_line_to (cr2, 90, 10);
- cairo_close_path (cr2);
- /* miter joins protrude 5*(1+sqrt(2)) above the top-left corner and to
- the right of the bottom-right corner */
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 80, 80);
- errors += !check_extents (ctx, phase, cr2, STROKE, CONTAINS, 0, 5, 95, 95);
- errors += !check_extents (ctx, phase, cr2, PATH, CONTAINS, 10, 10, 80, 80);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- cairo_save (cr2);
-
- cairo_set_line_width (cr2, 4);
-
- cairo_rectangle (cr2, 10, 10, 30, 30);
- cairo_rectangle (cr2, 25, 10, 15, 30);
-
- cairo_set_fill_rule (cr2, CAIRO_FILL_RULE_EVEN_ODD);
- phase = "EVEN_ODD overlapping rectangles";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 15, 30);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 8, 8, 34, 34);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 30, 30);
-
- /* Test other fill rule with the same path. */
-
- cairo_set_fill_rule (cr2, CAIRO_FILL_RULE_WINDING);
- phase = "WINDING overlapping rectangles";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 30, 30);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 8, 8, 34, 34);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 30, 30);
-
- /* Now, change the direction of the second rectangle and test both
- * fill rules again. */
- cairo_new_path (cr2);
- cairo_rectangle (cr2, 10, 10, 30, 30);
- cairo_rectangle (cr2, 25, 40, 15, -30);
-
- cairo_set_fill_rule (cr2, CAIRO_FILL_RULE_EVEN_ODD);
- phase = "EVEN_ODD overlapping rectangles";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 15, 30);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 8, 8, 34, 34);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 30, 30);
-
- /* Test other fill rule with the same path. */
-
- cairo_set_fill_rule (cr2, CAIRO_FILL_RULE_WINDING);
- phase = "WINDING overlapping rectangles";
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 15, 30);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 8, 8, 34, 34);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 30, 30);
-
- cairo_new_path (cr2);
-
- cairo_restore (cr2);
-
- /* http://bugs.freedesktop.org/show_bug.cgi?id=7245 */
- phase = "Arc";
- cairo_save (cr2);
- cairo_arc (cr2, 250.0, 250.0, 157.0, 5.147, 3.432);
- cairo_set_line_width (cr2, 154.0);
- errors += !check_extents (ctx, phase, cr2, STROKE, APPROX_EQUALS, 16, 38, 468, 446);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "Text";
- cairo_save (cr2);
- cairo_select_font_face (cr2, CAIRO_TEST_FONT_FAMILY " Sans",
- CAIRO_FONT_SLANT_NORMAL,
- CAIRO_FONT_WEIGHT_NORMAL);
- cairo_set_font_size (cr2, 12);
- cairo_text_extents (cr2, string, &extents);
- /* double check that the two methods of measuring the text agree... */
- cairo_scaled_font_text_extents (cairo_get_scaled_font (cr2),
- string,
- &scaled_font_extents);
- if (memcmp (&extents, &scaled_font_extents, sizeof (extents))) {
- cairo_test_log (ctx, "Error: cairo_text_extents() does not match cairo_scaled_font_text_extents() - font extents (%f, %f) x (%f, %f) should be (%f, %f) x (%f, %f)\n",
- scaled_font_extents.x_bearing,
- scaled_font_extents.y_bearing,
- scaled_font_extents.width,
- scaled_font_extents.height,
- extents.x_bearing,
- extents.y_bearing,
- extents.width,
- extents.height);
- errors++;
- }
-
- cairo_move_to (cr2, -extents.x_bearing, -extents.y_bearing);
- cairo_text_path (cr2, string);
- cairo_set_line_width (cr2, 2.0);
- /* XXX: We'd like to be able to use EQUALS here, but currently
- * when hinting is enabled freetype returns integer extents. See
- * http://cairographics.org/todo */
- errors += !check_extents (ctx, phase, cr2, FILL, APPROX_EQUALS,
- 0, 0, extents.width, extents.height);
- errors += !check_extents (ctx, phase, cr2, STROKE, APPROX_EQUALS,
- -1, -1, extents.width+2, extents.height+2);
- errors += !check_extents (ctx, phase, cr2, PATH, APPROX_EQUALS,
- 0, 0, extents.width, extents.height);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "User space, simple scale, getting extents with same transform";
- cairo_save (cr2);
- cairo_scale (cr2, 2, 2);
- cairo_rectangle (cr2, 5, 5, 40, 40);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 5, 5, 40, 40);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 0, 0, 50, 50);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 5, 5, 40, 40);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "User space, simple scale, getting extents with no transform";
- cairo_save (cr2);
- cairo_save (cr2);
- cairo_scale (cr2, 2, 2);
- cairo_rectangle (cr2, 5, 5, 40, 40);
- cairo_restore (cr2);
- errors += !check_extents (ctx, phase, cr2, FILL, EQUALS, 10, 10, 80, 80);
- errors += !check_extents (ctx, phase, cr2, STROKE, EQUALS, 5, 5, 90, 90);
- errors += !check_extents (ctx, phase, cr2, PATH, EQUALS, 10, 10, 80, 80);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- phase = "User space, rotation, getting extents with transform";
- cairo_save (cr2);
- cairo_rectangle (cr2, -50, -50, 50, 50);
- cairo_rotate (cr2, -M_PI/4);
- /* the path in user space is now (nearly) the square rotated by
- 45 degrees about the origin. Thus its x1 and x2 are both nearly 0.
- This should show any bugs where we just transform device-space
- x1,y1 and x2,y2 to get the extents. */
- /* The largest axis-aligned square inside the rotated path has
- side lengths 50*sqrt(2), so a bit over 35 on either side of
- the axes. With the stroke width added to the rotated path,
- the largest axis-aligned square is a bit over 38 on either side of
- the axes. */
- errors += !check_extents (ctx, phase, cr2, FILL, CONTAINS, -35, -35, 35, 35);
- errors += !check_extents (ctx, phase, cr2, STROKE, CONTAINS, -38, -38, 38, 38);
- errors += !check_extents (ctx, phase, cr2, PATH, CONTAINS, -35, -35, 35, 35);
- cairo_new_path (cr2);
- cairo_restore (cr2);
-
- status = cairo_status (cr2);
- cairo_destroy (cr2);
-
- if (status)
- return cairo_test_status_from_status (ctx, status);
-
- return errors == 0 ? CAIRO_TEST_SUCCESS : CAIRO_TEST_FAILURE;
-}
-
-CAIRO_TEST (get_path_extents,
- "Test cairo_fill_extents and cairo_stroke_extents",
- "extents, path", /* keywords */
- NULL, /* requirements */
- 0, 0,
- NULL, draw)
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-01 07:52:20 +0000