Attachment 118381 Details for Bug 77298 – cairo test for thin lines

[patch] cairo test for thin lines

0002-Add-test-case-for-thin-lines.patch (text/plain), 6.64 KB, created by Adrian Johnson on 2015-09-21 12:18:55 UTC

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Creator: Adrian Johnson

Created: 2015-09-21 12:18:55 UTC

Size: 6.64 KB

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obsolete

>From bd2c7eea028ed91db52f130919ee5820d0a7c52c Mon Sep 17 00:00:00 2001
>From: Adrian Johnson <ajohnson@redneon.com>
>Date: Mon, 21 Sep 2015 21:35:05 +0930
>Subject: [PATCH 2/2] Add test case for thin lines
>
>Bug 77298
>---
> test/Makefile.sources                       |   1 +
> test/reference/thin-lines.pdf.ref.png       | Bin 0 -> 371 bytes
> test/reference/thin-lines.ps.argb32.ref.png | Bin 0 -> 332 bytes
> test/reference/thin-lines.ps.rgb24.ref.png  | Bin 0 -> 264 bytes
> test/reference/thin-lines.ref.png           | Bin 0 -> 122 bytes
> test/thin-lines.c                           |  95 ++++++++++++++++++++++++++++
> 6 files changed, 96 insertions(+)
> create mode 100644 test/reference/thin-lines.pdf.ref.png
> create mode 100644 test/reference/thin-lines.ps.argb32.ref.png
> create mode 100644 test/reference/thin-lines.ps.rgb24.ref.png
> create mode 100644 test/reference/thin-lines.ref.png
> create mode 100644 test/thin-lines.c
>
>diff --git a/test/Makefile.sources b/test/Makefile.sources
>index e4fedb4..24ded46 100644
>--- a/test/Makefile.sources
>+++ b/test/Makefile.sources
>@@ -352,6 +352,7 @@ test_sources = \
> 	text-rotate.c					\
> 	text-transform.c				\
> 	text-zero-len.c					\
>+	thin-lines.c                                    \
> 	tighten-bounds.c				\
> 	tiger.c						\
> 	toy-font-face.c					\
>diff --git a/test/reference/thin-lines.pdf.ref.png b/test/reference/thin-lines.pdf.ref.png
>new file mode 100644
>index 0000000000000000000000000000000000000000..3d79c8ea26303edd621ce74396c8c1e4c8f5e78a
>GIT binary patch
>literal 371
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>
>literal 0
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>
>diff --git a/test/reference/thin-lines.ps.argb32.ref.png b/test/reference/thin-lines.ps.argb32.ref.png
>new file mode 100644
>index 0000000000000000000000000000000000000000..48393116d6ee6cb2d0affc63e07a8eda2e997e0e
>GIT binary patch
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>diff --git a/test/reference/thin-lines.ps.rgb24.ref.png b/test/reference/thin-lines.ps.rgb24.ref.png
>new file mode 100644
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>GIT binary patch
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>diff --git a/test/reference/thin-lines.ref.png b/test/reference/thin-lines.ref.png
>new file mode 100644
>index 0000000000000000000000000000000000000000..49e2a3fdb0e207b7b6f26351438f2f06d9ea76a8
>GIT binary patch
>literal 122
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>literal 0
>HcmV?d00001
>
>diff --git a/test/thin-lines.c b/test/thin-lines.c
>new file mode 100644
>index 0000000..c501254
>--- /dev/null
>+++ b/test/thin-lines.c
>@@ -0,0 +1,95 @@
>+/*
>+ * Copyright Â© 2015 Adrian Johnson
>+ *
>+ * 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
>+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
>+ * distribution of the software without specific, written prior
>+ * permission. Red Hat, Inc. makes no representations about the
>+ * suitability of this software for any purpose.  It is provided "as
>+ * is" without express or implied warranty.
>+ *
>+ * RED HAT, 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: Adrian Johnson <ajohnson@redneon.com>
>+ */
>+
>+#include "cairo-test.h"
>+
>+#define CELL_WIDTH 20
>+#define CELL_HEIGHT 20
>+#define PAD 2
>+#define IMAGE_WIDTH (CELL_WIDTH*3 + PAD*4)
>+#define IMAGE_HEIGHT (CELL_HEIGHT*4 + PAD*5)
>+
>+
>+static void
>+draw_lines(cairo_t *cr)
>+{
>+    /* horizontal line */
>+    cairo_translate (cr, PAD, PAD);
>+    cairo_move_to (cr, 0, CELL_HEIGHT/2);
>+    cairo_line_to (cr, CELL_WIDTH, CELL_HEIGHT/2);
>+    cairo_stroke (cr);
>+
>+    /* vertical line */
>+    cairo_translate (cr, 0, CELL_HEIGHT + PAD);
>+    cairo_move_to (cr, CELL_WIDTH/2, 0);
>+    cairo_line_to (cr, CELL_WIDTH/2, CELL_HEIGHT);
>+    cairo_stroke (cr);
>+
>+    /* diagonal line */
>+    cairo_translate (cr, 0, CELL_HEIGHT + PAD);
>+    cairo_move_to (cr, 0, CELL_HEIGHT);
>+    cairo_line_to (cr, CELL_WIDTH, 0);
>+    cairo_stroke (cr);
>+
>+    /* curved line */
>+    cairo_translate (cr, 0, CELL_HEIGHT + PAD);
>+    cairo_move_to (cr, CELL_WIDTH, 0);
>+    cairo_curve_to (cr, 0, 0,
>+		    CELL_WIDTH, CELL_HEIGHT,
>+		    0, CELL_HEIGHT);
>+    cairo_stroke (cr);
>+}
>+
>+#define FIXED_POINT_MIN (1.0/256)
>+
>+static cairo_test_status_t
>+draw (cairo_t *cr, int width, int height)
>+{
>+    cairo_save (cr);
>+    cairo_set_line_width (cr, FIXED_POINT_MIN*10.0);
>+    draw_lines (cr);
>+    cairo_restore (cr);
>+
>+    cairo_translate (cr, CELL_WIDTH + PAD, 0);
>+    cairo_save (cr);
>+    cairo_set_line_width (cr, FIXED_POINT_MIN);
>+    draw_lines (cr);
>+    cairo_restore (cr);
>+
>+    cairo_translate (cr, CELL_WIDTH + PAD, 0);
>+    cairo_save (cr);
>+    cairo_set_line_width (cr, FIXED_POINT_MIN/10.0);
>+    draw_lines (cr);
>+    cairo_restore (cr);
>+
>+    return CAIRO_TEST_SUCCESS;
>+}
>+
>+CAIRO_TEST (thin_lines,
>+	    "Tests that very thin lines are output to vector surfaces",
>+	    "stroke", /* keywords */
>+	    NULL, /* requirements */
>+	    IMAGE_WIDTH, IMAGE_HEIGHT,
>+	    NULL, draw)
>-- 
>2.1.4
>

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Attachments on bug 77298: 97205 | 97206 | 97207 | 97220 | 97247 | 118380 | 118381 | 118385

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