add gm for hittesting paths

git-svn-id: http://skia.googlecode.com/svn/trunk@4438 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 81 insertions, 0 deletions

diff --git a/gm/hittestpath.cpp b/gm/hittestpath.cpp
new file mode 100644
index 0000000000..a8566b7a70
--- /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);
+
+