add cairo

1 files changed, 120 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/degenerate-path.c b/libs/cairo-1.16.0/test/degenerate-path.c
new file mode 100644
index 0000000..aa5f822
--- /dev/null
+++ b/libs/cairo-1.16.0/test/degenerate-path.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright © 2006 Jeff Muizelaar
+ *
+ * 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
+ * Jeff Muizelaar not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Jeff Muizelaar makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * JEFF MUIZELAAR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL JEFF MUIZELAAR 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: Jeff Muizelaar <jeff@infidigm.net>
+ */
+
+#include "cairo-test.h"
+
+#define PAD 3.0
+#define LINE_WIDTH 6.0
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    const cairo_line_cap_t cap[] = { CAIRO_LINE_CAP_ROUND, CAIRO_LINE_CAP_SQUARE, CAIRO_LINE_CAP_BUTT };
+    size_t i;
+    double dash[] = {2, 2};
+    double dash_long[] = {6, 6};
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+
+    for (i = 0; i < ARRAY_LENGTH (cap); i++) {
+	cairo_save (cr);
+
+	cairo_set_line_cap (cr, cap[i]);
+
+	/* simple degenerate paths */
+	cairo_set_line_width (cr, LINE_WIDTH);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_stroke (cr);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_close_path (cr);
+	cairo_stroke (cr);
+
+	/* degenerate paths starting with dash on */
+	cairo_set_dash (cr, dash, 2, 0.);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_stroke (cr);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_close_path (cr);
+	cairo_stroke (cr);
+
+	/* degenerate paths starting with dash off */
+	/* these should not draw anything */
+	cairo_set_dash (cr, dash, 2, 2.);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_stroke (cr);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_close_path (cr);
+	cairo_stroke (cr);
+
+	/* this should draw a single degenerate sub-path
+	 * at the end of the path */
+	cairo_set_dash (cr, dash_long, 2, 6.);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_stroke (cr);
+
+	/* this should draw a single degenerate sub-path
+	 * at the end of the path. The difference between this
+	 * and the above is that this ends with a degenerate sub-path*/
+	cairo_set_dash (cr, dash_long, 2, 6.);
+
+	cairo_translate (cr, 0, 3*PAD);
+	cairo_move_to (cr, LINE_WIDTH + 6.0, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_line_to (cr, LINE_WIDTH, LINE_WIDTH);
+	cairo_stroke (cr);
+
+	cairo_restore (cr);
+
+	cairo_translate (cr, PAD+LINE_WIDTH+PAD, 0);
+    }
+    return CAIRO_TEST_SUCCESS;
+}
+
+/*
+ * XFAIL: undefined behaviour in PS, needs path editing to convert degenerate
+ * segments into circles/rectangles as expected by cairo
+ */
+CAIRO_TEST (degenerate_path,
+	    "Tests the behaviour of degenerate paths with different cap types",
+	    "degenerate", /* keywords */
+	    NULL, /* requirements */
+	    3*(PAD+LINE_WIDTH+PAD), 8*(LINE_WIDTH+PAD) + PAD,
+	    NULL, draw)