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+/*
+ * 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)