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authorMatthias Clasen <mclasen@redhat.com>2019-05-24 20:40:00 +0000
committerBehdad Esfahbod <behdad@behdad.org>2019-07-18 14:38:47 -0700
commit6fd4222ab00c3b93f038172a8c9d48375c5f86f0 (patch)
tree2f4bc85b408309b2f6244e75d51661e84962fffc
parentea9329215d3431ded51a71b724baf0edc25ad633 (diff)
Add a testcase for subpixel positioning
With the image compositor, you can see different phases. The XLib compositor always uses the same glyph rendering.
-rw-r--r--test/Makefile.sources1
-rw-r--r--test/text-subpixel.c68
2 files changed, 69 insertions, 0 deletions
diff --git a/test/Makefile.sources b/test/Makefile.sources
index 3451125f9..ce5971cfb 100644
--- a/test/Makefile.sources
+++ b/test/Makefile.sources
@@ -357,6 +357,7 @@ test_sources = \
text-glyph-range.c \
text-pattern.c \
text-rotate.c \
+ text-subpixel.c \
text-transform.c \
text-unhinted-metrics.c \
text-zero-len.c \
diff --git a/test/text-subpixel.c b/test/text-subpixel.c
new file mode 100644
index 000000000..3ea63b950
--- /dev/null
+++ b/test/text-subpixel.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright © 2019 Matthias Clasen
+ *
+ * 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 WIDTH 300
+#define HEIGHT 200
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ cairo_font_options_t *font_options;
+ double size, y;
+
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ cairo_paint (cr);
+
+ cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY "DejaVu Sans Mono",
+ CAIRO_FONT_SLANT_NORMAL,
+ CAIRO_FONT_WEIGHT_NORMAL);
+
+ font_options = cairo_font_options_create();
+ cairo_get_font_options (cr, font_options);
+ cairo_font_options_set_hint_metrics (font_options, CAIRO_HINT_METRICS_OFF);
+ cairo_font_options_set_hint_style (font_options, CAIRO_HINT_STYLE_NONE);
+ cairo_set_font_options (cr, font_options);
+ cairo_font_options_destroy (font_options);
+
+ y = 0.0;
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ for (size = 10.0; size <= 40.0; size += 3.3) {
+ cairo_set_font_size (cr, size);
+ y += size + 2.3;
+ cairo_move_to (cr, 5, y);
+ cairo_show_text (cr, "aaaaaaaaaa");
+ }
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (text_subpixel_positioning,
+ "Test subpixel positioning",
+ "text, font", /* keywords */
+ NULL, /* requirements */
+ WIDTH, HEIGHT,
+ NULL, draw)