add gm for hittesting paths
git-svn-id: http://skia.googlecode.com/svn/trunk@4438 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/hittestpath.cpp b/gm/hittestpath.cpp
new file mode 100644
index 0000000..a8566b7
--- /dev/null
+++ b/gm/hittestpath.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "gm.h"
+#include "SkCanvas.h"
+#include "SkCullPoints.h"
+#include "SkRandom.h"
+
+static void test_hittest(SkCanvas* canvas, const SkPath& path, bool hires) {
+ SkPaint paint;
+ SkRect r = path.getBounds();
+
+ paint.setColor(SK_ColorRED);
+ canvas->drawPath(path, paint);
+
+ paint.setColor(0x800000FF);
+ for (SkScalar y = r.fTop + 0.5 - 4; y < r.fBottom + 4; y += 1) {
+ for (SkScalar x = r.fLeft + 0.5 - 4; x < r.fRight + 4; x += 1) {
+ if (hires) {
+ if (SkHitTestPathEx(path, x, y)) {
+ canvas->drawPoint(x, y, paint);
+ }
+ } else {
+ if (SkHitTestPath(path, x, y, false)) {
+ canvas->drawPoint(x, y, paint);
+ }
+ }
+ }
+ }
+}
+
+class HitTestPathGM : public skiagm::GM {
+public:
+ HitTestPathGM () {}
+
+protected:
+ virtual SkString onShortName() {
+ return SkString("hittestpath");
+ }
+
+ virtual SkISize onISize() { return SkISize::Make(700, 460); }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ SkPath path;
+ SkRandom rand;
+
+ for (int i = 0; i < 5; ++i) {
+ path.lineTo(rand.nextUScalar1() * 150, rand.nextUScalar1() * 150);
+ path.quadTo(rand.nextUScalar1() * 150, rand.nextUScalar1() * 150,
+ rand.nextUScalar1() * 150, rand.nextUScalar1() * 150);
+ }
+
+ path.setFillType(SkPath::kEvenOdd_FillType);
+ path.offset(20, 20);
+
+ test_hittest(canvas, path, false);
+ canvas->translate(200, 0);
+ test_hittest(canvas, path, true);
+
+ canvas->translate(-200, 200);
+ path.setFillType(SkPath::kWinding_FillType);
+
+ test_hittest(canvas, path, false);
+ canvas->translate(200, 0);
+ test_hittest(canvas, path, true);
+ }
+
+private:
+ typedef GM INHERITED;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+
+static skiagm::GM* MyFactory(void*) { return new HitTestPathGM; }
+static skiagm::GMRegistry reg(MyFactory);
+
+