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-rw-r--r--libs/cairo-1.16.0/test/a1-clip.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/a1-clip.c b/libs/cairo-1.16.0/test/a1-clip.c
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+++ b/libs/cairo-1.16.0/test/a1-clip.c
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+/*
+ * Copyright © 2008 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 POINTS 10
+#define STEP (1.0 / POINTS)
+#define PAD 1
+#define WIDTH (PAD + POINTS * 2 + PAD)
+#define HEIGHT (WIDTH)
+
+static cairo_test_status_t
+paint (cairo_t *cr, int width, int height)
+{
+ int i, j;
+
+ /* Fill background white */
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ /* Draw in black */
+ cairo_set_source_rgb (cr, 0, 0, 0);
+
+ cairo_translate (cr, PAD, PAD);
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+
+ for (i = 0; i < POINTS; i++)
+ for (j = 0; j < POINTS; j++) {
+ cairo_save (cr);
+ cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1);
+ cairo_clip (cr);
+ cairo_paint (cr);
+ cairo_restore (cr);
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+fill_equal (cairo_t *cr, int width, int height)
+{
+ int i, j;
+
+ /* Fill background white */
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ /* Draw in black */
+ cairo_set_source_rgb (cr, 0, 0, 0);
+
+ cairo_translate (cr, PAD, PAD);
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+
+ for (i = 0; i < POINTS; i++)
+ for (j = 0; j < POINTS; j++) {
+ cairo_save (cr);
+ cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1);
+ cairo_clip_preserve (cr);
+ cairo_fill (cr);
+ cairo_restore (cr);
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+fill (cairo_t *cr, int width, int height)
+{
+ int i, j;
+
+ /* Fill background white */
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ /* Draw in black */
+ cairo_set_source_rgb (cr, 0, 0, 0);
+
+ cairo_translate (cr, PAD, PAD);
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+
+ for (i = 0; i < POINTS; i++)
+ for (j = 0; j < POINTS; j++) {
+ cairo_save (cr);
+ cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1);
+ cairo_clip (cr);
+ cairo_rectangle (cr, 2 * i, 2 * j, 2, 2);
+ cairo_fill (cr);
+ cairo_restore (cr);
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+stroke (cairo_t *cr, int width, int height)
+{
+ int i, j;
+
+ /* Fill background white */
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ /* Draw in black */
+ cairo_set_source_rgb (cr, 0, 0, 0);
+
+ cairo_translate (cr, PAD, PAD);
+ cairo_set_antialias (cr, CAIRO_ANTIALIAS_NONE);
+
+ cairo_set_line_width (cr, 2);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+
+ for (i = 0; i < POINTS; i++)
+ for (j = 0; j < POINTS; j++) {
+ cairo_save (cr);
+ cairo_rectangle (cr, 2 * i + i * STEP, 2 * j + j * STEP, 1, 1);
+ cairo_clip (cr);
+ cairo_move_to (cr, 2 * i, 2 * j + 1);
+ cairo_line_to (cr, 2 * i + 2, 2 * j + 1);
+ cairo_stroke (cr);
+ cairo_restore (cr);
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (a1_clip_paint,
+ "Test sample position when drawing trapezoids with ANTIALIAS_NONE",
+ "alpha, clip", /* keywords */
+ "target=raster", /* requirements */
+ WIDTH, HEIGHT,
+ NULL, paint)
+
+CAIRO_TEST (a1_clip_fill,
+ "Test sample position when drawing trapezoids with ANTIALIAS_NONE",
+ "alpha, clip", /* keywords */
+ "target=raster", /* requirements */
+ WIDTH, HEIGHT,
+ NULL, fill)
+
+CAIRO_TEST (a1_clip_fill_equal,
+ "Test sample position when drawing trapezoids with ANTIALIAS_NONE",
+ "alpha, clip", /* keywords */
+ "target=raster", /* requirements */
+ WIDTH, HEIGHT,
+ NULL, fill_equal)
+
+CAIRO_TEST (a1_clip_stroke,
+ "Test sample position when drawing trapezoids with ANTIALIAS_NONE",
+ "alpha, clip", /* keywords */
+ "target=raster", /* requirements */
+ WIDTH, HEIGHT,
+ NULL, stroke)