Issue #26 Add test for shadow caching.

1 files changed, 159 insertions, 0 deletions

diff --git a/src/cairo-tests/shadow.cpp b/src/cairo-tests/shadow.cpp
new file mode 100644
index 0000000..b742b88
--- /dev/null
+++ b/src/cairo-tests/shadow.cpp
@@ -0,0 +1,159 @@
+/*
+ * Copyright 2014 © Samsung Research America, Silicon Valley
+ *
+ * Use of this source code is governed by the 3-Clause BSD license
+ * specified in the COPYING file included with this source code.
+ */
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <cairo.h>
+#include <math.h>
+
+#include "caskbench.h"
+#include "caskbench_context.h"
+#include "cairo-shapes.h"
+#include "kinetics.h"
+
+static double line_width;
+
+static double shadow_x_blur;
+static double shadow_y_blur;
+
+static double spread_line_width;
+static double spread_x_blur;
+static double spread_y_blur;
+
+static double drop_x_blur;
+static double drop_y_blur;
+static double drop_x_offset;
+static double drop_y_offset;
+static double drop_line_width;
+
+static double x_offset;
+static double y_offset;
+
+static kinetics_t *particles;
+
+static void particle_init ()
+{
+    line_width = 20.0;
+
+    /* Inset shadow */
+    shadow_x_blur = 5;
+    shadow_y_blur = 2;
+
+    x_offset = 6;
+    y_offset = 1;
+
+    /* Spread */
+    spread_x_blur = 5;
+    spread_y_blur = 2;
+    spread_line_width = 3;
+
+    /* Drop shadow */
+    drop_x_blur = 10;
+    drop_y_blur = 8;
+    drop_x_offset = -30;
+    drop_y_offset = -5;
+    drop_line_width = line_width;
+}
+
+static void fill_particle (caskbench_context_t *ctx, shapes_t *shape)
+{
+    cairo_t *cr = ctx->cairo_cr;
+    /* Drop shadow */
+    cairo_set_shadow (cr, CAIRO_SHADOW_DROP);
+    cairo_set_draw_shadow_only (cr, 1);
+    cairo_set_shadow_rgba (cr, 0, 0, 0, 0.5);
+    cairo_set_shadow_offset (cr, drop_x_offset,
+				 drop_y_offset);
+    cairo_set_shadow_blur (cr, drop_x_blur,
+			       drop_y_blur);
+    cairoDrawCircle (ctx, shape);
+    cairo_set_line_width (cr, drop_line_width);
+    cairo_stroke (cr);
+    /* Ring */
+    cairoRandomizeColor (ctx);
+    cairo_set_shadow (cr, CAIRO_SHADOW_INSET);
+    cairo_set_draw_shadow_only (cr, 0);
+
+    // cairo_set_shadow_rgba (cr, 0, 0, 0, 1); /* Disable shadow masking to make output similar to skia */
+    cairo_set_shadow_offset (cr, x_offset,
+				 y_offset);
+    cairo_set_shadow_blur (cr, shadow_x_blur,
+			       shadow_y_blur);
+    cairoDrawCircle (ctx,shape);
+    cairo_set_line_width (cr, line_width);
+    cairo_stroke (cr);
+
+    /* Spread */
+    cairo_set_shadow (cr, CAIRO_SHADOW_DROP);
+    cairo_set_draw_shadow_only (cr, 1);
+    cairo_set_shadow_rgba (cr, 1, 1, 1, 1);
+    cairo_set_shadow_offset (cr, x_offset,
+				 y_offset);
+    cairo_set_shadow_blur (cr, spread_x_blur,
+			       spread_y_blur);
+    cairoDrawCircle (ctx,shape);
+    cairo_set_line_width (cr, spread_line_width);
+    cairo_stroke (cr);
+}
+
+int
+ca_setup_shadow(caskbench_context_t *ctx)
+{
+    if (ctx->size < 0)
+        return 0;
+    // Animation & Shadow setup
+    particles = (kinetics_t *) malloc (sizeof (kinetics_t) * ctx->size);
+    for (int i = 0; i < ctx->size; i++)
+        kinetics_init(&particles[i], ctx);
+
+    particle_init ();
+    return 1;
+}
+
+void
+ca_teardown_shadow(void)
+{
+    free(particles);
+}
+
+int
+ca_test_shadow(caskbench_context_t *ctx)
+{
+    cairo_set_source_rgb (ctx->cairo_cr, 1, 1, 1);
+    cairo_rectangle (ctx->cairo_cr, 0, 0, ctx->canvas_width ,ctx->canvas_height);
+    cairo_fill (ctx->cairo_cr);
+
+    for (int i = 0; i < ctx->size; i++) {
+        shapes_t shape;
+        kinetics_t *particle = &particles[i];
+        kinetics_update(particle, 0.1);
+
+        shape_copy(&ctx->shape_defaults, &shape);
+        shape.width = particle->width;
+        shape.height = particle->height;
+        shape.x = particle->x;
+        shape.y = particle->y;
+        if (!shape.radius)
+            shape.radius = 40;
+
+        cairo_shadow_enable_cache (ctx->cairo_cr, 1);
+        fill_particle (ctx, &shape);
+    }
+    return 1;
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :