WIP Hittest Component.

components/viz/hittest/public/interfaces/hittest_data.mojom

Index: components/viz/hittest/public/interfaces/hittest_data.mojom
diff --git a/components/viz/hittest/public/interfaces/hittest_data.mojom b/components/viz/hittest/public/interfaces/hittest_data.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..21537af0f00853102cb4e2b61d8590b6c43d1188
--- /dev/null
+++ b/components/viz/hittest/public/interfaces/hittest_data.mojom
@@ -0,0 +1,39 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+module viz.hittest.mojom;
+
+import "cc/ipc/surface_id.mojom";
+import "ui/gfx/geometry/mojo/geometry.mojom";
+import "ui/gfx/mojo/transform.mojom";
+
+enum HittestRegionFlags { 
+
+  // embedded child region mapped to a surface  

[rjkroege, 2017/06/07 17:16:46]

Sentence comments.

[gklassen, 2017/06/07 20:04:45]

Done.

+  HITTEST_SURFACE = 0,  
+  
+  // irregular boundary - send HittestRequest to resolve 
+  HITTEST_ASK,          
+
+  // no touch event handler exists - no need to send touch events
+  HITTEST_NO_TOUCH_EVENT_HANDLER, 
+
+  // region ignored for hit testing ( eg. hover:none )
+  HITTEST_IGNORE
+};
+
+struct HittestRegion {

[rjkroege, 2017/06/07 17:16:46]

lots of comments here. 

[gklassen, 2017/06/07 20:04:45]

Done.

+    cc.mojom.SurfaceId surface_id_;
+    HittestRegionFlags flags_;
+    gfx.mojom.Rect rect_;
+    gfx.mojom.Transform transform_;
+};
+
+struct HittestData {
+  cc.mojom.SurfaceId surface_id_;
+  gfx.mojom.Rect rect_;
+  HittestRegionFlags flags_;

[rjkroege, 2017/06/07 17:16:46]

Should have different flag types.

[gklassen, 2017/06/07 20:04:44]

Done.

+  gfx.mojom.Transform transform_;

[rjkroege, 2017/06/07 17:16:46]

we convinced ourselves that it's not needed.

[gklassen, 2017/06/07 20:04:44]

Done.

+  array<HittestRegion> regions_; // in front to back z-order 
+};