add cairo

1 files changed, 110 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/dash-zero-length.c b/libs/cairo-1.16.0/test/dash-zero-length.c
new file mode 100644
index 0000000..5ab944b
--- /dev/null
+++ b/libs/cairo-1.16.0/test/dash-zero-length.c
@@ -0,0 +1,110 @@
+/*
+ * 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 IMAGE_WIDTH 19
+#define IMAGE_HEIGHT 61
+
+/* A test of the two extremes of dashing: a solid line
+ * and an invisible one. Also test that capping works
+ * on invisible lines.
+ */
+
+static void
+draw_dash (cairo_t *cr, double *dash, int num_dashes)
+{
+    cairo_set_dash (cr, dash, num_dashes, 0.0);
+    cairo_move_to (cr,  1, 2);
+    cairo_line_to (cr, 18, 2);
+    cairo_stroke (cr);
+    cairo_translate (cr, 0, 3);
+}
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    static double solid_line[] = { 4, 0 };
+    static double invisible_line[] = { 0, 4 };
+    static double dotted_line[] = { 0, 6 };
+    static double zero_1_of_3[] = { 0, 2, 3 };
+    static double zero_2_of_3[] = { 1, 0, 3 };
+    static double zero_3_of_3[] = { 1, 2, 0 };
+    static double zero_1_of_4[] = { 0, 2, 3, 4 };
+    static double zero_2_of_4[] = { 1, 0, 3, 4 };
+    static double zero_3_of_4[] = { 1, 2, 0, 4 };
+    static double zero_4_of_4[] = { 1, 2, 3, 0 };
+    static double zero_1_2_of_4[] = { 0, 0, 3, 4 };
+    static double zero_1_3_of_4[] = { 0, 2, 0, 4 };
+/* Clearly it would be nice to draw this one as well, but it seems to trigger a bug in ghostscript. */
+#if BUG_FIXED_IN_GHOSTSCRIPT
+    static double zero_1_4_of_4[] = { 0, 2, 3, 0 };
+#endif
+    static double zero_2_3_of_4[] = { 1, 0, 0, 4 };
+    static double zero_2_4_of_4[] = { 1, 0, 3, 0 };
+    static double zero_3_4_of_4[] = { 1, 2, 0, 0 };
+    static double zero_1_2_3_of_4[] = { 0, 0, 0, 4 };
+    static double zero_1_2_4_of_4[] = { 0, 0, 3, 0 };
+    static double zero_1_3_4_of_4[] = { 0, 2, 0, 0 };
+    static double zero_2_3_4_of_4[] = { 1, 0, 0, 0 };
+
+    cairo_set_source_rgb (cr, 1, 0, 0);
+    cairo_set_line_width (cr, 2);
+
+    draw_dash (cr, solid_line, 2);
+    draw_dash (cr, invisible_line, 2);
+
+    cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
+    draw_dash (cr, dotted_line, 2);
+    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+
+    draw_dash (cr, zero_1_of_3, 3);
+    draw_dash (cr, zero_2_of_3, 3);
+    draw_dash (cr, zero_3_of_3, 3);
+    draw_dash (cr, zero_1_of_4, 4);
+    draw_dash (cr, zero_2_of_4, 4);
+    draw_dash (cr, zero_3_of_4, 4);
+    draw_dash (cr, zero_4_of_4, 4);
+    draw_dash (cr, zero_1_2_of_4, 4);
+    draw_dash (cr, zero_1_3_of_4, 4);
+#if BUG_FIXED_IN_GHOSTSCRIPT
+    draw_dash (cr, zero_1_4_of_4, 4);
+#endif
+    draw_dash (cr, zero_2_3_of_4, 4);
+    draw_dash (cr, zero_2_4_of_4, 4);
+    draw_dash (cr, zero_3_4_of_4, 4);
+    draw_dash (cr, zero_1_2_3_of_4, 4);
+    draw_dash (cr, zero_1_2_4_of_4, 4);
+    draw_dash (cr, zero_1_3_4_of_4, 4);
+    draw_dash (cr, zero_2_3_4_of_4, 4);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (dash_zero_length,
+	    "Tests cairo_set_dash with zero length",
+	    "dash, stroke", /* keywords */
+	    NULL, /* requirements */
+	    IMAGE_WIDTH, IMAGE_HEIGHT,
+	    NULL, draw)