Add ft-text-antilaias-none test case demonstrating bug #6759.

1 files changed, 128 insertions, 0 deletions

diff --git a/test/ft-text-antialias-none.c b/test/ft-text-antialias-none.c
new file mode 100644
index 000000000..3092e8da3
--- /dev/null
+++ b/test/ft-text-antialias-none.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright © 2006 Jinghua Luo
+ *
+ * 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.
+ *
+ * JINGHUA LUO 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: Jinghua Luo <sunmoon1997@gmail.com>
+ * Derived from:
+ *  text-antialias-none.c,
+ *  ft-font-create-for-ft-face.c.
+ * Original Author: Carl D. Worth <cworth@cworth.org>
+ */
+#include "cairo-test.h"
+#include <cairo-ft.h>
+
+#define WIDTH  40
+#define HEIGHT 30
+#define TEXT_SIZE 12
+
+cairo_test_t test = {
+    "ft-text-antialias-none",
+    "Tests text rendering with no antialiasing",
+    WIDTH, HEIGHT
+};
+
+static cairo_scaled_font_t *
+create_scaled_font (cairo_t * cr)
+{
+    FcPattern *pattern, *resolved;
+    FcResult result;
+    cairo_font_face_t *font_face;
+    cairo_scaled_font_t *scaled_font;
+    cairo_font_options_t *font_options;
+    cairo_matrix_t font_matrix, ctm;
+    double pixel_size;
+
+    font_options = cairo_font_options_create ();
+
+    pattern = FcPatternCreate ();
+
+    FcPatternAddString (pattern, FC_FAMILY, (FcChar8 *)"Bitstream vera sans");
+    FcPatternAddDouble (pattern, FC_SIZE, TEXT_SIZE);
+    FcConfigSubstitute (NULL, pattern, FcMatchPattern);
+
+    cairo_ft_font_options_substitute (font_options, pattern);
+
+    FcDefaultSubstitute (pattern);
+    resolved = FcFontMatch (NULL, pattern, &result);
+
+    /* turn antialiasing off */
+    FcPatternDel (resolved, FC_ANTIALIAS);
+    FcPatternAddBool (resolved, FC_ANTIALIAS, FcFalse);
+
+    FcPatternGetDouble (resolved, FC_PIXEL_SIZE, 0, &pixel_size);
+
+    font_face = cairo_ft_font_face_create_for_pattern (resolved);
+
+    cairo_matrix_init_identity (&font_matrix);
+    cairo_matrix_scale (&font_matrix, pixel_size, pixel_size);
+
+    cairo_get_matrix (cr, &ctm);
+
+    scaled_font = cairo_scaled_font_create (font_face,
+					    &font_matrix,
+					    &ctm,
+					    font_options);
+
+    cairo_font_options_destroy (font_options);
+    cairo_font_face_destroy (font_face);
+    FcPatternDestroy (pattern);
+    FcPatternDestroy (resolved);
+
+    return scaled_font;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_text_extents_t extents;
+    cairo_scaled_font_t * scaled_font;
+    static char black[] = "black", blue[] = "blue";
+
+    /* We draw in the default black, so paint white first. */
+    cairo_save (cr);
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+    cairo_paint (cr);
+    cairo_restore (cr);
+
+    scaled_font = create_scaled_font (cr);
+    cairo_set_scaled_font (cr, scaled_font);
+
+    cairo_set_source_rgb (cr, 0, 0, 0); /* black */
+    cairo_text_extents (cr, black, &extents);
+    cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
+    cairo_show_text (cr, black);
+    cairo_translate (cr, 0, -extents.y_bearing + 1);
+
+    cairo_set_source_rgb (cr, 0, 0, 1); /* blue */
+    cairo_text_extents (cr, blue, &extents);
+    cairo_move_to (cr, -extents.x_bearing, -extents.y_bearing);
+    cairo_show_text (cr, blue);
+
+    cairo_scaled_font_destroy (scaled_font);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+int
+main (void)
+{
+    return cairo_test (&test, draw);
+}