Index: components/viz/hit_test/display_hit_test_data.h |
diff --git a/components/viz/hit_test/display_hit_test_data.h b/components/viz/hit_test/display_hit_test_data.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..24ef05a6b12d12fed5c4b60677eb309b423aae62 |
--- /dev/null |
+++ b/components/viz/hit_test/display_hit_test_data.h |
@@ -0,0 +1,51 @@ |
+// 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. |
+ |
+#ifndef COMPONENTS_VIZ_HIT_TEST_HIT_TEST_DATA_H_ |
+#define COMPONENTS_VIZ_HIT_TEST_HIT_TEST_DATA_H_ |
+ |
+#include <stdint.h> |
+ |
+#include <map> |
+#include <memory> |
+ |
+#include "cc/surfaces/surface_id.h" |
+#include "cc/surfaces/surface_observer.h" |
+#include "components/viz/hit_test/hit_test_export.h" |
+#include "components/viz/hit_test/public/interfaces/hit_test_data.mojom.h" |
+#include "hit_test_aggregator.h" |
+#include "ui/gfx/geometry/quad_f.h" |
+ |
+namespace viz { |
+ |
+// DiplayHitTestData contains the hit_test data for the Display. |
+// |
+// It is designed to be in shared memory so that the viz process can |
+// write the hit_test data, and other processes can read without |
rjkroege
2017/06/09 15:47:08
nit: only one process. The browser / ws.
gklassen
2017/06/12 16:30:41
A very welcome nit. Thank you. Done.
|
+// process hops. |
+// |
+// One instance of this class contains a double buffer of entries - |
rjkroege
2017/06/09 15:47:08
there is a need to add a TODO about setting up the
gklassen
2017/06/12 16:30:41
Added by abstracting allocation on your suggestion
|
+// the viz process will write into one half while client processes read from |
+// the other. read_offset_ is used to swap buffers atomically. |
+ |
+// the child_count_ of the last region in the list is set to |
+constexpr int kEndOfList = -1; |
+ |
+struct DisplayHitTestRegion { |
+ cc::FrameSinkId frame_sink_id_; |
+ hit_test::mojom::HitTestRegionFlags flags_; |
+ gfx::Rect rect_; |
+ gfx::Transform transform_; |
+ int child_count_; |
+}; |
+ |
+struct DisplayHitTestData { |
+ int size_; |
+ base::subtle::Atomic32 read_offset_; |
rjkroege
2017/06/09 15:47:07
this is communication from a less-trusted process
gklassen
2017/06/12 16:30:41
Acknowledged.
|
+ DisplayHitTestRegion regions_[]; |
+}; |
+ |
+} // namespace viz |
+ |
+#endif // COMPONENTS_VIZ_HIT_TEST_HIT_TEST_DATA_H_ |