add cairo

1 files changed, 196 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/rectilinear-dash-scale.c b/libs/cairo-1.16.0/test/rectilinear-dash-scale.c
new file mode 100644
index 0000000..34f3345
--- /dev/null
+++ b/libs/cairo-1.16.0/test/rectilinear-dash-scale.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright © 2006 Red Hat, Inc.
+ * Copyright © 2008 Chris Wilson
+ *
+ * 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.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ *         Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ * Based on the original test/rectilinear-stroke.c by Carl D. Worth.
+ */
+
+#include "cairo-test.h"
+
+#define SIZE 50
+
+static void
+draw_dashes (cairo_t *cr)
+{
+    const double dash_square[4] = {4, 2, 2, 2};
+    const double dash_butt[4] = {5, 1, 3, 1};
+
+    cairo_save (cr);
+
+    cairo_set_dash (cr, dash_square, 4, 0);
+
+    cairo_set_line_width (cr, 1.0);
+    cairo_translate (cr, 1, 1);
+
+    /* Draw everything first with square caps. */
+    cairo_set_line_cap (cr, CAIRO_LINE_CAP_SQUARE);
+
+    /* Draw horizontal and vertical segments, each in both
+     * directions. */
+    cairo_move_to     (cr,  4.5,  0.5);
+    cairo_rel_line_to (cr,  2.0,  0.0);
+
+    cairo_move_to     (cr, 10.5,  4.5);
+    cairo_rel_line_to (cr,  0.0,  2.0);
+
+    cairo_move_to     (cr,  6.5, 10.5);
+    cairo_rel_line_to (cr, -2.0,  0.0);
+
+    cairo_move_to     (cr,  0.5,  6.5);
+    cairo_rel_line_to (cr,  0.0, -2.0);
+
+    /* Draw right angle turns in four directions. */
+    cairo_move_to     (cr,  0.5,  2.5);
+    cairo_rel_line_to (cr,  0.0, -2.0);
+    cairo_rel_line_to (cr,  2.0,  0.0);
+
+    cairo_move_to     (cr,  8.5,  0.5);
+    cairo_rel_line_to (cr,  2.0,  0.0);
+    cairo_rel_line_to (cr,  0.0,  2.0);
+
+    cairo_move_to     (cr, 10.5,  8.5);
+    cairo_rel_line_to (cr,  0.0,  2.0);
+    cairo_rel_line_to (cr, -2.0,  0.0);
+
+    cairo_move_to     (cr,  2.5, 10.5);
+    cairo_rel_line_to (cr, -2.0,  0.0);
+    cairo_rel_line_to (cr,  0.0, -2.0);
+
+    cairo_stroke (cr);
+
+    /* Draw a closed-path rectangle */
+    cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0);
+    cairo_set_dash (cr, dash_square, 4, 2);
+    cairo_stroke (cr);
+
+    cairo_translate (cr, 12, 0);
+
+    /* Now draw the same results, but with butt caps. */
+    cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+    cairo_set_dash (cr, dash_butt, 4, 0.0);
+
+    /* Draw horizontal and vertical segments, each in both
+     * directions. */
+    cairo_move_to     (cr,  4.0,  0.5);
+    cairo_rel_line_to (cr,  3.0,  0.0);
+
+    cairo_move_to     (cr, 10.5,  4.0);
+    cairo_rel_line_to (cr,  0.0,  3.0);
+
+    cairo_move_to     (cr,  7.0, 10.5);
+    cairo_rel_line_to (cr, -3.0,  0.0);
+
+    cairo_move_to     (cr,  0.5,  7.0);
+    cairo_rel_line_to (cr,  0.0, -3.0);
+
+    /* Draw right angle turns in four directions. */
+    cairo_move_to     (cr,  0.5,  3.0);
+    cairo_rel_line_to (cr,  0.0, -2.5);
+    cairo_rel_line_to (cr,  2.5,  0.0);
+
+    cairo_move_to     (cr,  8.0,  0.5);
+    cairo_rel_line_to (cr,  2.5,  0.0);
+    cairo_rel_line_to (cr,  0.0,  2.5);
+
+    cairo_move_to     (cr, 10.5,  8.0);
+    cairo_rel_line_to (cr,  0.0,  2.5);
+    cairo_rel_line_to (cr, -2.5,  0.0);
+
+    cairo_move_to     (cr,  3.0, 10.5);
+    cairo_rel_line_to (cr, -2.5,  0.0);
+    cairo_rel_line_to (cr,  0.0, -2.5);
+
+    cairo_stroke (cr);
+
+    /* Draw a closed-path rectangle */
+    cairo_set_dash (cr, dash_butt, 4, 2.5);
+    cairo_rectangle (cr, 0.5, 12.5, 10.0, 10.0);
+    cairo_stroke (cr);
+
+    cairo_restore (cr);
+}
+
+static cairo_test_status_t
+dashes (cairo_t *cr)
+{
+    /* Paint background white, then draw in black. */
+    cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
+    cairo_paint (cr);
+
+    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
+    draw_dashes (cr);
+
+    cairo_save (cr);
+    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
+    cairo_translate (cr, 0, SIZE);
+    cairo_scale (cr, 1, -1);
+    draw_dashes (cr);
+    cairo_restore (cr);
+
+    cairo_save (cr);
+    cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
+    cairo_translate (cr, SIZE, 0);
+    cairo_scale (cr, -1, 1);
+    draw_dashes (cr);
+    cairo_restore (cr);
+
+    cairo_save (cr);
+    cairo_set_source_rgb (cr, 0.0, 0.0, 1.0);
+    cairo_translate (cr, SIZE, SIZE);
+    cairo_scale (cr, -1, -1);
+    draw_dashes (cr);
+    cairo_restore (cr);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+static cairo_test_status_t
+aligned (cairo_t *cr, int width, int height)
+{
+    cairo_scale (cr, 4, 2);
+    return dashes(cr);
+}
+
+static cairo_test_status_t
+unaligned (cairo_t *cr, int width, int height)
+{
+    cairo_scale (cr, 3.9, 1.9);
+    return dashes(cr);
+}
+
+CAIRO_TEST (rectilinear_dash_scale,
+	    "Test dashed rectilinear stroke operations (covering only whole pixels) after scaling",
+	    "stroke, dash", /* keywords */
+	    NULL, /* requirements */
+	    4*SIZE, 2*SIZE,
+	    NULL, aligned)
+
+CAIRO_TEST (rectilinear_dash_scale_unaligned,
+	    "Test dashed rectilinear stroke operations (covering partial pixels) after scaling",
+	    "stroke, dash", /* keywords */
+	    NULL, /* requirements */
+	    4*SIZE, 2*SIZE,
+	    NULL, unaligned)