tests: Implement linear and radial gradients

1 files changed, 99 insertions, 0 deletions

diff --git a/src/skia-tests/radial-gradient.cpp b/src/skia-tests/radial-gradient.cpp
new file mode 100644
index 0000000..62d7fe1
--- /dev/null
+++ b/src/skia-tests/radial-gradient.cpp
@@ -0,0 +1,99 @@
+/*
+ * 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 <math.h>
+
+#include <SkCanvas.h>
+#include <SkPaint.h>
+#include <SkRect.h>
+#include <SkGradientShader.h>
+
+#include "caskbench.h"
+#include "caskbench_context.h"
+#include "skia-shapes.h"
+
+int
+sk_setup_radial_gradient(caskbench_context_t *ctx)
+{
+    return 1;
+}
+
+void
+sk_teardown_radial_gradient(void)
+{
+}
+
+int
+sk_test_radial_gradient(caskbench_context_t *ctx)
+{
+    int w = ctx->canvas_width;
+    int h = ctx->canvas_height;
+    SkColor colors[10];
+    SkPoint center;
+
+    center.fX = SkIntToScalar(20);
+    center.fY = SkIntToScalar(20);
+
+    for (int i=0; i<NUM_ELEM(colors); i++)
+        colors[i] = skiaRandomColor();
+
+    SkShader* shader = NULL;
+    shader = SkGradientShader::CreateRadial(
+        center, 20,
+        colors, NULL, NUM_ELEM(colors),
+        SkShader::kClamp_TileMode);
+
+    // TODO: the HTML5 createRadialGradiet() routine
+    // actually creates a conical gradient:  A gradient
+    // is made between two circles C1 and C2.
+    // x0=20, y0=20, r0=20, x1=50, y1=50, r1=70
+
+    shapes_t shape;
+    shape_copy(&ctx->shape_defaults, &shape);
+    for (int i=0; i<ctx->size; i++) {
+        double x1 = (double)rand()/RAND_MAX * w;
+        double x2 = (double)rand()/RAND_MAX * w;
+        double y1 = (double)rand()/RAND_MAX * h;
+        double y2 = (double)rand()/RAND_MAX * h;
+
+        double xx = MIN(x1, x2);
+        double yy = MIN(x1, x2);
+        double ww = abs(x2 - x1);
+        double hh = abs(y2 - y1);
+
+        // transform(shape.width/100, 0, 0, shape.height/100, 0, 0)
+        shape.x = 0;
+        shape.y = 0;
+        shape.width = 100;
+        shape.height = 100;
+        shape.fill_type = CB_FILL_RADIAL_GRADIENT;
+
+        skiaRandomizePaintColor(ctx);
+
+        ctx->skia_paint->setStyle(SkPaint::kFill_Style);
+        ctx->skia_paint->setShader(shader);
+
+        skiaDrawRectangle(ctx, &shape);
+
+        if (shader)
+            shader->unref();
+    }
+
+    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 :