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..abd467b96358c9cb25de2a1f6fb9cdeafc1b264b |
--- /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 collect and write the hit_test data, and |
+// - other processes can access without process hops or mojo calls |
rjkroege
2017/06/07 21:19:04
sentences need periods
gklassen
2017/06/08 20:33:20
Done.
|
+// |
+// One instance of this class contains a double buffer of entries - |
+// the viz process will write into one half while client processes read from |
+// the other. front_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 front_offset_; |
rjkroege
2017/06/07 21:19:04
per my earlier blither... we could consider using
|
+ DisplayHitTestRegion regions_[]; |
rjkroege
2017/06/07 21:19:04
Some compilers don't like 0-length arrays. You mig
gklassen
2017/06/08 20:33:20
if it's a pointer then the struct won't be flat -
|
+}; |
+ |
+} // namespace viz |
+ |
+#endif // COMPONENTS_VIZ_HIT_TEST_HIT_TEST_DATA_H_ |