add cairo

1 files changed, 180 insertions, 0 deletions

diff --git a/libs/cairo-1.16.0/test/finer-grained-fallbacks.c b/libs/cairo-1.16.0/test/finer-grained-fallbacks.c
new file mode 100644
index 0000000..fa16f72
--- /dev/null
+++ b/libs/cairo-1.16.0/test/finer-grained-fallbacks.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright © 2008 Adrian Johnson
+ *
+ * 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: Adrian Johnson <ajohnson@redneon.com>
+ */
+
+#include "cairo-test.h"
+
+#define CIRCLE_SIZE 10
+#define PAD 2
+#define WIDTH (CIRCLE_SIZE*6.5 + PAD)
+#define HEIGHT (CIRCLE_SIZE*7.0 + PAD)
+
+static void
+draw_circle (cairo_t *cr, double x, double y)
+{
+    cairo_save (cr);
+    cairo_translate (cr, x, y);
+    cairo_arc (cr, 0, 0, CIRCLE_SIZE / 2, 0., 2. * M_PI);
+    cairo_fill (cr);
+    cairo_restore (cr);
+}
+
+static void
+draw_image_circle (cairo_t *cr, cairo_surface_t *source, double x, double y)
+{
+    cairo_save (cr);
+
+    cairo_set_source_surface (cr, source, x, y);
+    cairo_pattern_set_extend (cairo_get_source (cr), CAIRO_EXTEND_REFLECT);
+    cairo_rectangle (cr, x, y, CIRCLE_SIZE, CIRCLE_SIZE);
+    cairo_fill (cr);
+
+    cairo_restore (cr);
+}
+
+static void
+draw_circles (cairo_t *cr)
+{
+    draw_circle (cr, 0,               -CIRCLE_SIZE*0.1);
+    draw_circle (cr, CIRCLE_SIZE*0.4,  CIRCLE_SIZE*0.25);
+
+    draw_circle (cr, CIRCLE_SIZE*2, 0);
+    draw_circle (cr, CIRCLE_SIZE*4, 0);
+    draw_circle (cr, CIRCLE_SIZE*6, 0);
+}
+
+static void
+draw_image_circles (cairo_t *cr, cairo_surface_t *source)
+{
+    draw_image_circle (cr, source, 0,               -CIRCLE_SIZE*0.1);
+    draw_image_circle (cr, source, CIRCLE_SIZE*0.4,  CIRCLE_SIZE*0.25);
+
+    draw_image_circle (cr, source, CIRCLE_SIZE*2, 0);
+    draw_image_circle (cr, source, CIRCLE_SIZE*4, 0);
+    draw_image_circle (cr, source, CIRCLE_SIZE*6, 0);
+}
+
+/* For each of circle and fallback_circle we draw:
+ *  - two overlapping
+ *  - one isolated
+ *  - one off the page
+ *  - one overlapping the edge of the page.
+ *
+ * We also draw a circle and fallback_circle overlapping each other.
+ *
+ * Circles are drawn in green. An opaque color and CAIRO_OPERATOR_OVER
+ * is used to ensure they will be emitted as a vectors in PS/PDF.
+ *
+ * Fallback circles are drawn in red. CAIRO_OPERATOR_ADD is used to
+ * ensure they will be emitted as a fallback image in PS/PDF.
+ *
+ * In order to trigger a fallback for SVG, we need to use a surface with
+ * REFLECT.
+ */
+static cairo_surface_t *
+surface_create (cairo_t *target)
+{
+    cairo_surface_t *surface;
+    cairo_t *cr;
+
+    surface = cairo_surface_create_similar (cairo_get_target (target),
+					    CAIRO_CONTENT_COLOR_ALPHA,
+					    CIRCLE_SIZE, CIRCLE_SIZE);
+    cr = cairo_create (surface);
+    cairo_surface_destroy (surface);
+
+    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
+    draw_circle (cr, CIRCLE_SIZE/2, CIRCLE_SIZE/2);
+
+    surface = cairo_surface_reference (cairo_get_target (cr));
+    cairo_destroy (cr);
+
+    return surface;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    cairo_surface_t *surface;
+
+    cairo_translate (cr, PAD, PAD);
+
+    cairo_save (cr);
+
+    /* Draw overlapping circle and fallback circle */
+    cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+    draw_circle (cr, CIRCLE_SIZE*0.5,  CIRCLE_SIZE*1.5);
+
+    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
+    draw_circle (cr, CIRCLE_SIZE*0.75, CIRCLE_SIZE*1.75);
+
+    /* Draw circles */
+    cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+    cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6);
+    draw_circles (cr);
+
+    /* Draw fallback circles */
+    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
+    cairo_translate (cr, 0, CIRCLE_SIZE*2);
+    draw_circles (cr);
+
+    cairo_restore (cr);
+    cairo_translate (cr, 0, CIRCLE_SIZE * 3.5);
+
+    /* Draw using fallback surface */
+    surface = surface_create (cr);
+
+    cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+    draw_circle (cr, CIRCLE_SIZE*0.5,  CIRCLE_SIZE*1.5);
+
+    cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
+    draw_image_circle (cr, surface, CIRCLE_SIZE/4, CIRCLE_SIZE + CIRCLE_SIZE/4);
+
+    /* Draw circles */
+    cairo_set_source_rgb (cr, 0.0, 1.0, 0.0);
+    cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+    cairo_translate (cr, CIRCLE_SIZE*2.5, CIRCLE_SIZE*0.6);
+    draw_circles (cr);
+
+    cairo_set_operator (cr, CAIRO_OPERATOR_ADD);
+    cairo_translate (cr, -CIRCLE_SIZE/2, CIRCLE_SIZE*1.5);
+    draw_image_circles (cr, surface);
+
+    cairo_surface_destroy (surface);
+
+    return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (finer_grained_fallbacks,
+	    "Test that multiple PS/PDF fallback images in various locations are correct",
+	    "fallbacks", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT,
+	    NULL, draw)