add cairo

1 files changed, 109 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/ft-show-glyphs-table.c b/libs/cairo-1.16.0/test/ft-show-glyphs-table.c
new file mode 100644
index 0000000..344392f
--- /dev/null
+++ b/libs/cairo-1.16.0/test/ft-show-glyphs-table.c
@@ -0,0 +1,109 @@
+/*
+ * 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.
+ *
+ * Authors: Eugeniy Meshcheryakov <eugen@debian.org>
+ *	    Adrian Johnson <ajohnson@redneon.com>
+ *	    Carl Worth <cworth@cworth.org>
+ */
+
+#include "cairo-test.h"
+#include <cairo-ft.h>
+
+#define TEXT_SIZE	20
+#define PAD		10
+#define GRID_SIZE	30
+#define GRID_ROWS	10
+#define GRID_COLS	4
+#define NUM_GLYPHS	(GRID_ROWS * GRID_COLS)
+#define WIDTH		(PAD + GRID_COLS * GRID_SIZE + PAD)
+#define HEIGHT		(PAD + GRID_ROWS * GRID_SIZE + PAD)
+
+/* This test was originally inspired by this bug report:
+ *
+ * Error when creating pdf charts for new FreeSerifItalic.ttf
+ * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%23474136
+ *
+ * The original assertion failure was fairly boring, but the later
+ * glyph mispositiing was quite interesting. And it turns out that the
+ * _cairo_pdf_operators_show_glyphs code is fairly convoluted with a
+ * code path that wasn't being exercised at all by the test suite.
+ *
+ * So this is an attempt to exercise that code path. Apparently laying
+ * glyphs out vertically in a table like this, (so that there's a
+ * large change in Y position from one glyph to the next), exercises
+ * the code well.
+ */
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_font_options_t *font_options;
+    cairo_scaled_font_t *scaled_font;
+    FT_Face face;
+    FT_ULong charcode;
+    FT_UInt idx;
+    int i = 0;
+    cairo_glyph_t glyphs[NUM_GLYPHS];
+
+    /* paint white so we don't need separate ref images for
+     * RGB24 and ARGB32 */
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+    cairo_paint (cr);
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Sans",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size (cr, TEXT_SIZE);
+
+    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_set_font_options (cr, font_options);
+    cairo_font_options_destroy (font_options);
+
+    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
+
+    scaled_font = cairo_get_scaled_font (cr);
+    face = cairo_ft_scaled_font_lock_face (scaled_font);
+    {
+	charcode = FT_Get_First_Char(face, &idx);
+	while (idx && (i < NUM_GLYPHS)) {
+	    glyphs[i] = (cairo_glyph_t) {idx, PAD + GRID_SIZE * (i/GRID_ROWS), PAD + TEXT_SIZE + GRID_SIZE * (i%GRID_ROWS)};
+	    i++;
+	    charcode = FT_Get_Next_Char(face, charcode, &idx);
+	}
+    }
+    cairo_ft_scaled_font_unlock_face (scaled_font);
+
+    cairo_show_glyphs(cr, glyphs, i);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (ft_show_glyphs_table,
+	    "Test cairo_show_glyphs with cairo-ft backend and glyphs laid out in a table",
+	    "ft, text", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT,
+	    NULL, draw)
+