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-rw-r--r--test/rectilinear-stroke.c139
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diff --git a/test/rectilinear-stroke.c b/test/rectilinear-stroke.c
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+/*
+ * Copyright © 2006 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: Carl D. Worth <cworth@cworth.org>
+ */
+
+#include "cairo-test.h"
+
+#define SIZE 25
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ /* Paint background white, then draw in black. */
+ cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+ cairo_paint (cr);
+ cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_translate (cr, 1, 1);
+
+ /* Draw everything first with square caps. */
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+ /* Draw horizontal and vertical segments, each in both
+ * directions. */
+ cairo_move_to (cr, 4.5, 0.5);
+ cairo_rel_line_to (cr, 2.0, 0.0);
+
+ cairo_move_to (cr, 10.5, 4.5);
+ cairo_rel_line_to (cr, 0.0, 2.0);
+
+ cairo_move_to (cr, 6.5, 10.5);
+ cairo_rel_line_to (cr, -2.0, 0.0);
+
+ cairo_move_to (cr, 0.5, 6.5);
+ cairo_rel_line_to (cr, 0.0, -2.0);
+
+ /* Draw right angle turns in four directions. */
+ cairo_move_to (cr, 0.5, 2.5);
+ cairo_rel_line_to (cr, 0.0, -2.0);
+ cairo_rel_line_to (cr, 2.0, 0.0);
+
+ cairo_move_to (cr, 8.5, 0.5);
+ cairo_rel_line_to (cr, 2.0, 0.0);
+ cairo_rel_line_to (cr, 0.0, 2.0);
+
+ cairo_move_to (cr, 10.5, 8.5);
+ cairo_rel_line_to (cr, 0.0, 2.0);
+ cairo_rel_line_to (cr, -2.0, 0.0);
+
+ cairo_move_to (cr, 2.5, 10.5);
+ cairo_rel_line_to (cr, -2.0, 0.0);
+ cairo_rel_line_to (cr, 0.0, -2.0);
+
+ /* Draw a closed-path rectangle */
+ cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0);
+
+ cairo_stroke (cr);
+
+ cairo_translate (cr, 12, 0);
+
+ /* Now draw the same results, but with butt caps. */
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+
+ /* Draw horizontal and vertical segments, each in both
+ * directions. */
+ cairo_move_to (cr, 4.0, 0.5);
+ cairo_rel_line_to (cr, 3.0, 0.0);
+
+ cairo_move_to (cr, 10.5, 4.0);
+ cairo_rel_line_to (cr, 0.0, 3.0);
+
+ cairo_move_to (cr, 7.0, 10.5);
+ cairo_rel_line_to (cr, -3.0, 0.0);
+
+ cairo_move_to (cr, 0.5, 7.0);
+ cairo_rel_line_to (cr, 0.0, -3.0);
+
+ /* Draw right angle turns in four directions. */
+ cairo_move_to (cr, 0.5, 3.0);
+ cairo_rel_line_to (cr, 0.0, -2.5);
+ cairo_rel_line_to (cr, 2.5, 0.0);
+
+ cairo_move_to (cr, 8.0, 0.5);
+ cairo_rel_line_to (cr, 2.5, 0.0);
+ cairo_rel_line_to (cr, 0.0, 2.5);
+
+ cairo_move_to (cr, 10.5, 8.0);
+ cairo_rel_line_to (cr, 0.0, 2.5);
+ cairo_rel_line_to (cr, -2.5, 0.0);
+
+ cairo_move_to (cr, 3.0, 10.5);
+ cairo_rel_line_to (cr, -2.5, 0.0);
+ cairo_rel_line_to (cr, 0.0, -2.5);
+
+ /* Draw a closed-path rectangle */
+ cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0);
+
+ /* Draw a path that is rectilinear initially, but not completely */
+ /* We draw this out of the target window. The bug that caused this
+ * addition was leaks if part of the path was rectilinear but not
+ * completely */
+ cairo_move_to (cr, 3.0, 30.5);
+ cairo_rel_line_to (cr, -2.5, 0.0);
+ cairo_rel_line_to (cr, +2.5, +2.5);
+
+ cairo_stroke (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (rectilinear_stroke,
+ "Test rectilinear stroke operations (covering only whole pixels)",
+ "stroke", /* keywords */
+ NULL, /* requirements */
+ SIZE, SIZE,
+ NULL, draw)
+