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Unified Diff: components/viz/service/hit_test/hit_test_aggregator_unittest.cc

Issue 2938953002: Implement HitTestAggregator (Closed)
Patch Set: correct mojom include directory and improvements based on reviewer comments Created 3 years, 5 months ago
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Index: components/viz/service/hit_test/hit_test_aggregator_unittest.cc
diff --git a/components/viz/service/hit_test/hit_test_aggregator_unittest.cc b/components/viz/service/hit_test/hit_test_aggregator_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4a23b4dca4ad5388f42296f800fcc673d67754b9
--- /dev/null
+++ b/components/viz/service/hit_test/hit_test_aggregator_unittest.cc
@@ -0,0 +1,1017 @@
+// 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.
+
+#include "components/viz/service/hit_test/hit_test_aggregator.h"
+
+#include "components/viz/common/surfaces/frame_sink_id.h"
+#include "components/viz/common/surfaces/local_surface_id.h"
+#include "components/viz/common/surfaces/surface_id.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace viz {
+
+namespace {
+
+constexpr FrameSinkId kDisplayFrameSink(2, 0);
+
+SurfaceId MakeSurfaceId(const FrameSinkId& frame_sink_id, uint32_t local_id) {
+ return SurfaceId(
+ frame_sink_id,
+ LocalSurfaceId(local_id, base::UnguessableToken::Deserialize(0, 1u)));
+}
+
+} // namespace
+
+class TestHitTestAggregator : public HitTestAggregator {
+ public:
+ TestHitTestAggregator() = default;
+ ~TestHitTestAggregator() = default;
+
+ void CallOnSurfaceWillDraw(SurfaceId surface_id) {
+ OnSurfaceWillDraw(surface_id);
+ }
+ void CallOnSurfaceDiscarded(SurfaceId surface_id) {
+ OnSurfaceDiscarded(surface_id);
+ }
+
+ int Count() {
+ AggregatedHitTestRegion* start =
+ static_cast<AggregatedHitTestRegion*>(read_buffer_.get());
+ AggregatedHitTestRegion* end = start;
+ while (end->child_count != kEndOfList)
+ end++;
+
+ int count = end - start;
+ return count;
+ }
+ int GetPendingCount() { return pending_.size(); }
+ int GetActiveCount() { return active_.size(); }
+ int GetActiveRegionCount() { return active_region_count_; }
+ int GetHitTestRegionListSize() { return read_size_; }
+ AggregatedHitTestRegion* GetRegions() {
+ return static_cast<AggregatedHitTestRegion*>(read_buffer_.get());
+ }
+
+ void Reset() {
+ AggregatedHitTestRegion* regions =
+ static_cast<AggregatedHitTestRegion*>(write_buffer_.get());
+ regions[0].child_count = kEndOfList;
+
+ regions = static_cast<AggregatedHitTestRegion*>(read_buffer_.get());
+ regions[0].child_count = kEndOfList;
+
+ pending_.clear();
+ active_.clear();
+ }
+};
+
+class HitTestAggregatorTest : public testing::Test {
+ public:
+ HitTestAggregatorTest() = default;
+ ~HitTestAggregatorTest() override = default;
+
+ // testing::Test:
+ void SetUp() override {}
+ void TearDown() override { aggregator_.Reset(); }
+
+ TestHitTestAggregator aggregator_;
+
+ // Creates a hit test data element with 8 children recursively to
+ // the specified depth. SurfaceIds are generated in sequential order and
+ // the method returns the next unused id.
+ int CreateAndSubmitHitTestRegionListWith8Children(int id, int depth) {
+ SurfaceId surface_id = MakeSurfaceId(kDisplayFrameSink, id);
+ id++;
+
+ auto hit_test_region_list = mojom::HitTestRegionList::New();
+ hit_test_region_list->surface_id = surface_id;
+ hit_test_region_list->flags = mojom::kHitTestMine;
+ hit_test_region_list->bounds.SetRect(0, 0, 1024, 768);
+
+ for (int i = 0; i < 8; i++) {
+ auto hit_test_region = mojom::HitTestRegion::New();
+ hit_test_region->rect.SetRect(100, 100, 100, 100);
+
+ if (depth > 0) {
+ hit_test_region->flags = mojom::kHitTestChildSurface;
+ hit_test_region->surface_id = MakeSurfaceId(kDisplayFrameSink, id);
+ id = CreateAndSubmitHitTestRegionListWith8Children(id, depth - 1);
+ } else {
+ hit_test_region->flags = mojom::kHitTestMine;
+ }
+ hit_test_region_list->regions.push_back(std::move(hit_test_region));
+ }
+
+ aggregator_.SubmitHitTestRegionList(std::move(hit_test_region_list));
+ return id;
+ }
+};
+
+// TODO(gklassen): Add tests for 3D use cases as suggested by and with
+// input from rjkroege.
+
+// One surface.
+//
+// +----------+
+// | |
+// | |
+// | |
+// +----------+
+//
+TEST_F(HitTestAggregatorTest, OneSurface) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId display_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+
+ auto hit_test_region_list = mojom::HitTestRegionList::New();
+ hit_test_region_list->surface_id = display_surface_id;
+ hit_test_region_list->flags = mojom::kHitTestMine;
+ hit_test_region_list->bounds.SetRect(0, 0, 1024, 768);
+
+ aggregator_.SubmitHitTestRegionList(std::move(hit_test_region_list));
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(display_surface_id);
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.Aggregate(display_surface_id);
+ aggregator_.Swap();
+
+ // Expect 1 entry routing all events to the one surface (display root).
+ EXPECT_EQ(1, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(display_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// One opaque embedder with two regions.
+//
+// +e-------------+
+// | +r1-+ +r2--+ |
+// | | | | | |
+// | | | | | |
+// | +---+ +----+ |
+// +--------------+
+//
+TEST_F(HitTestAggregatorTest, OneEmbedderTwoRegions) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_r1 = mojom::HitTestRegion::New();
+ e_hit_test_region_r1->flags = mojom::kHitTestMine;
+ e_hit_test_region_r1->rect.SetRect(100, 100, 200, 400);
+
+ auto e_hit_test_region_r2 = mojom::HitTestRegion::New();
+ e_hit_test_region_r2->flags = mojom::kHitTestMine;
+ e_hit_test_region_r2->rect.SetRect(400, 100, 300, 400);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_r1));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_r2));
+
+ // Submit mojom::HitTestRegionList.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ // Add Surfaces to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+ EXPECT_EQ(3, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(gfx::Rect(100, 100, 200, 400), region->rect);
+ EXPECT_EQ(0, region->child_count);
+
+ region = &regions[2];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(gfx::Rect(400, 100, 300, 400), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// One embedder with two children.
+//
+// +e-------------+
+// | +c1-+ +c2--+ |
+// | | | | | |
+// | | | | | |
+// | +---+ +----+ |
+// +--------------+
+//
+
+TEST_F(HitTestAggregatorTest, OneEmbedderTwoChildren) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c1_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+ SurfaceId c2_surface_id = MakeSurfaceId(kDisplayFrameSink, 3);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_c1 = mojom::HitTestRegion::New();
+ e_hit_test_region_c1->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c1->surface_id = c1_surface_id;
+ e_hit_test_region_c1->rect.SetRect(100, 100, 200, 300);
+
+ auto e_hit_test_region_c2 = mojom::HitTestRegion::New();
+ e_hit_test_region_c2->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c2->surface_id = c2_surface_id;
+ e_hit_test_region_c2->rect.SetRect(400, 100, 400, 300);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c1));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c2));
+
+ auto c1_hit_test_data = mojom::HitTestRegionList::New();
+ c1_hit_test_data->surface_id = c1_surface_id;
+
+ auto c2_hit_test_data = mojom::HitTestRegionList::New();
+ c2_hit_test_data->surface_id = c2_surface_id;
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c1_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c2_hit_test_data));
+ EXPECT_EQ(3, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c2_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c1_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(3, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(3, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(mojom::kHitTestChildSurface, region->flags);
+ EXPECT_EQ(c1_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 200, 300), region->rect);
+ EXPECT_EQ(0, region->child_count);
+
+ region = &regions[2];
+ EXPECT_EQ(mojom::kHitTestChildSurface, region->flags);
+ EXPECT_EQ(c2_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(400, 100, 400, 300), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// Occluded child frame (OOPIF).
+//
+// +e-----------+
+// | +c--+ |
+// | | +div-+ |
+// | | | | |
+// | | +----+ |
+// | +---+ |
+// +------------+
+//
+
+TEST_F(HitTestAggregatorTest, OccludedChildFrame) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_div = mojom::HitTestRegion::New();
+ e_hit_test_region_div->flags = mojom::kHitTestMine;
+ e_hit_test_region_div->surface_id = e_surface_id;
+ e_hit_test_region_div->rect.SetRect(200, 200, 300, 200);
+
+ auto e_hit_test_region_c = mojom::HitTestRegion::New();
+ e_hit_test_region_c->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c->surface_id = c_surface_id;
+ e_hit_test_region_c->rect.SetRect(100, 100, 200, 500);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_div));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c));
+
+ auto c_hit_test_data = mojom::HitTestRegionList::New();
+ c_hit_test_data->surface_id = c_surface_id;
+ c_hit_test_data->flags = mojom::kHitTestMine;
+ c_hit_test_data->bounds.SetRect(0, 0, 200, 500);
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(3, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(200, 200, 300, 200), region->rect);
+ EXPECT_EQ(0, region->child_count);
+
+ region = &regions[2];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(c_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 200, 500), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// Foreground child frame (OOPIF).
+// Same as the previous test except the child is foreground.
+//
+// +e-----------+
+// | +c--+ |
+// | | |div-+ |
+// | | | | |
+// | | |----+ |
+// | +---+ |
+// +------------+
+//
+
+TEST_F(HitTestAggregatorTest, ForegroundChildFrame) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_div = mojom::HitTestRegion::New();
+ e_hit_test_region_div->flags = mojom::kHitTestMine;
+ e_hit_test_region_div->surface_id = e_surface_id;
+ e_hit_test_region_div->rect.SetRect(200, 200, 300, 200);
+
+ auto e_hit_test_region_c = mojom::HitTestRegion::New();
+ e_hit_test_region_c->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c->surface_id = c_surface_id;
+ e_hit_test_region_c->rect.SetRect(100, 100, 200, 500);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_div));
+
+ auto c_hit_test_data = mojom::HitTestRegionList::New();
+ c_hit_test_data->surface_id = c_surface_id;
+ c_hit_test_data->flags = mojom::kHitTestMine;
+ c_hit_test_data->bounds.SetRect(0, 0, 200, 500);
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(3, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(c_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 200, 500), region->rect);
+ EXPECT_EQ(0, region->child_count);
+
+ region = &regions[2];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(200, 200, 300, 200), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// One embedder with a clipped child with a tab and transparent background.
+//
+// +e-------------+
+// | +c---------| Point maps to
+// | 1 |+a--+ | ----- -------
+// | || 2 | 3 | 1 e
+// | |+b--------| 2 a
+// | || | 3 e (transparent area in c)
+// | || 4 | 4 b
+// +--------------+
+//
+
+TEST_F(HitTestAggregatorTest, ClippedChildWithTabAndTransparentBackground) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+ SurfaceId a_surface_id = MakeSurfaceId(kDisplayFrameSink, 3);
+ SurfaceId b_surface_id = MakeSurfaceId(kDisplayFrameSink, 4);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_c = mojom::HitTestRegion::New();
+ e_hit_test_region_c->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c->surface_id = c_surface_id;
+ e_hit_test_region_c->rect.SetRect(200, 100, 1600, 800);
+ e_hit_test_region_c->transform.Translate(200, 100);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c));
+
+ auto c_hit_test_data = mojom::HitTestRegionList::New();
+ c_hit_test_data->surface_id = c_surface_id;
+ c_hit_test_data->flags = mojom::kHitTestIgnore;
+ c_hit_test_data->bounds.SetRect(0, 0, 1600, 800);
+
+ auto c_hit_test_region_a = mojom::HitTestRegion::New();
+ c_hit_test_region_a->flags = mojom::kHitTestChildSurface;
+ c_hit_test_region_a->surface_id = a_surface_id;
+ c_hit_test_region_a->rect.SetRect(0, 0, 200, 100);
+
+ auto c_hit_test_region_b = mojom::HitTestRegion::New();
+ c_hit_test_region_b->flags = mojom::kHitTestChildSurface;
+ c_hit_test_region_b->surface_id = b_surface_id;
+ c_hit_test_region_b->rect.SetRect(0, 100, 800, 600);
+
+ c_hit_test_data->regions.push_back(std::move(c_hit_test_region_a));
+ c_hit_test_data->regions.push_back(std::move(c_hit_test_region_b));
+
+ auto a_hit_test_data = mojom::HitTestRegionList::New();
+ a_hit_test_data->surface_id = a_surface_id;
+ a_hit_test_data->flags = mojom::kHitTestMine;
+ a_hit_test_data->bounds.SetRect(0, 0, 200, 100);
+
+ auto b_hit_test_data = mojom::HitTestRegionList::New();
+ b_hit_test_data->surface_id = b_surface_id;
+ b_hit_test_data->flags = mojom::kHitTestMine;
+ b_hit_test_data->bounds.SetRect(0, 100, 800, 600);
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(a_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(b_hit_test_data));
+ EXPECT_EQ(3, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(4, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(b_surface_id);
+ EXPECT_EQ(3, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(a_surface_id);
+ EXPECT_EQ(4, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(4, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(3, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestIgnore);
+ EXPECT_EQ(c_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(200, 100, 1600, 800), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ gfx::Point point(300, 300);
+ region->transform.TransformPointReverse(&point);
+ EXPECT_TRUE(point == gfx::Point(100, 200));
+
+ region = &regions[2];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(a_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 200, 100), region->rect);
+ EXPECT_EQ(0, region->child_count);
+
+ region = &regions[3];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(b_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 100, 800, 600), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// Three children deep.
+//
+// +e------------+
+// | +c1-------+ |
+// | | +c2---+ | |
+// | | | +c3-| | |
+// | | | | | | |
+// | | | +---| | |
+// | | +-----+ | |
+// | +---------+ |
+// +-------------+
+//
+
+TEST_F(HitTestAggregatorTest, ThreeChildrenDeep) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c1_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+ SurfaceId c2_surface_id = MakeSurfaceId(kDisplayFrameSink, 3);
+ SurfaceId c3_surface_id = MakeSurfaceId(kDisplayFrameSink, 4);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_c1 = mojom::HitTestRegion::New();
+ e_hit_test_region_c1->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c1->surface_id = c1_surface_id;
+ e_hit_test_region_c1->rect.SetRect(100, 100, 700, 700);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c1));
+
+ auto c1_hit_test_data = mojom::HitTestRegionList::New();
+ c1_hit_test_data->surface_id = c1_surface_id;
+ c1_hit_test_data->flags = mojom::kHitTestMine;
+ c1_hit_test_data->bounds.SetRect(0, 0, 600, 600);
+
+ auto c1_hit_test_region_c2 = mojom::HitTestRegion::New();
+ c1_hit_test_region_c2->flags = mojom::kHitTestChildSurface;
+ c1_hit_test_region_c2->surface_id = c2_surface_id;
+ c1_hit_test_region_c2->rect.SetRect(100, 100, 500, 500);
+
+ c1_hit_test_data->regions.push_back(std::move(c1_hit_test_region_c2));
+
+ auto c2_hit_test_data = mojom::HitTestRegionList::New();
+ c2_hit_test_data->surface_id = c2_surface_id;
+ c2_hit_test_data->flags = mojom::kHitTestMine;
+ c2_hit_test_data->bounds.SetRect(0, 0, 400, 400);
+
+ auto c2_hit_test_region_c3 = mojom::HitTestRegion::New();
+ c2_hit_test_region_c3->flags = mojom::kHitTestChildSurface;
+ c2_hit_test_region_c3->surface_id = c3_surface_id;
+ c2_hit_test_region_c3->rect.SetRect(100, 100, 300, 300);
+
+ c2_hit_test_data->regions.push_back(std::move(c2_hit_test_region_c3));
+
+ auto c3_hit_test_data = mojom::HitTestRegionList::New();
+ c3_hit_test_data->surface_id = c3_surface_id;
+ c3_hit_test_data->flags = mojom::kHitTestMine;
+ c3_hit_test_data->bounds.SetRect(0, 0, 200, 200);
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c1_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c3_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(3, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c2_hit_test_data));
+ EXPECT_EQ(4, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c2_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c1_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(3, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c3_surface_id);
+ EXPECT_EQ(4, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(4, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(3, region->child_count);
+
+ region = &regions[1];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(c1_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 700, 700), region->rect);
+ EXPECT_EQ(2, region->child_count);
+
+ region = &regions[2];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(c2_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 500, 500), region->rect);
+ EXPECT_EQ(1, region->child_count);
+
+ region = &regions[3];
+ EXPECT_EQ(region->flags, mojom::kHitTestChildSurface | mojom::kHitTestMine);
+ EXPECT_EQ(c3_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(100, 100, 300, 300), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// Missing / late child.
+//
+// +e-----------+
+// | +c--+ |
+// | | |div-+ |
+// | | | | |
+// | | |----+ |
+// | +---+ |
+// +------------+
+//
+
+TEST_F(HitTestAggregatorTest, MissingChildFrame) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_div = mojom::HitTestRegion::New();
+ e_hit_test_region_div->flags = mojom::kHitTestMine;
+ e_hit_test_region_div->surface_id = e_surface_id;
+ e_hit_test_region_div->rect.SetRect(200, 200, 300, 200);
+
+ auto e_hit_test_region_c = mojom::HitTestRegion::New();
+ e_hit_test_region_c->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c->surface_id = c_surface_id;
+ e_hit_test_region_c->rect.SetRect(100, 100, 200, 500);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_div));
+
+ auto c_hit_test_data = mojom::HitTestRegionList::New();
+ c_hit_test_data->surface_id = c_surface_id;
+ c_hit_test_data->flags = mojom::kHitTestMine;
+ c_hit_test_data->bounds.SetRect(0, 0, 200, 500);
+
+ // Submit in unexpected order, but not the child.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(2, aggregator_.Count());
+
+ AggregatedHitTestRegion* regions = aggregator_.GetRegions();
+
+ AggregatedHitTestRegion* region = nullptr;
+
+ region = &regions[0];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(0, 0, 1024, 768), region->rect);
+ EXPECT_EQ(1, region->child_count);
+
+ // Child would exist here but it was not included in the Display Frame.
+
+ region = &regions[1];
+ EXPECT_EQ(mojom::kHitTestMine, region->flags);
+ EXPECT_EQ(e_surface_id.frame_sink_id(), region->frame_sink_id);
+ EXPECT_EQ(gfx::Rect(200, 200, 300, 200), region->rect);
+ EXPECT_EQ(0, region->child_count);
+}
+
+// Exceed limits to ensure that bounds and resize work.
+//
+// A tree of embedders each with 8 children and 4 levels deep = 4096 regions.
+// This will exceed initial allocation and force a resize.
+//
+// +e--------------------------------------------------------+
+// | +c1----------++c2----------++c3----------++c4----------+|
+// | | +c1--------|| +c1--------|| +c1--------|| +c1--------||
+// | | | +c1-++c2-|| | +c1-++c2-|| | +c1-++c2-|| | +c1-++c2-||
+// | | | | || || | | || || | | || || | | || ||
+// | | | +---++---|| | +---++---|| | +---++---|| | +---++---||
+// | +------------++------------++------------++------------+|
+// | +c5----------++c6----------++c7----------++c8----------+|
+// | | +c1--------|| +c1--------|| +c1--------|| +c1--------||
+// | | | +c1-++c2-|| | +c1-++c2-|| | +c1-++c2-|| | +c1-++c2-||
+// | | | | || || | | || || | | || || | | || ||
+// | | | +---++---|| | +---++---|| | +---++---|| | +---++---||
+// | +------------++------------++------------++------------+|
+// +---------------------------------------------------------+
+//
+
+TEST_F(HitTestAggregatorTest, ExceedLimits) {
+ EXPECT_EQ(0, aggregator_.Count());
+
+ EXPECT_LT(aggregator_.GetHitTestRegionListSize(), 4096);
+
+ SurfaceId display_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+
+ int next_surface_id = CreateAndSubmitHitTestRegionListWith8Children(1, 3);
+ int surface_count = next_surface_id - 1;
+
+ EXPECT_EQ(surface_count, aggregator_.GetPendingCount());
+
+ // Mark Surfaces as added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ for (int i = 1; i <= surface_count; i++) {
+ SurfaceId surface_id = MakeSurfaceId(kDisplayFrameSink, i);
+ aggregator_.CallOnSurfaceWillDraw(surface_id);
+ }
+
+ EXPECT_EQ(surface_count, aggregator_.GetActiveCount());
+
+ // Aggregate and swap.
+ aggregator_.Aggregate(display_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+
+ aggregator_.Swap();
+
+ // Expect 4680 regions:
+ // 8 children 4 levels deep 8*8*8*8 is 4096
+ // 1 region for each embedder/surface + 584
+ // 1 root + 1
+ // -----
+ // 4681.
+ EXPECT_EQ(4681, aggregator_.Count());
+
+ EXPECT_GE(aggregator_.GetHitTestRegionListSize(), 4681);
+}
+
+TEST_F(HitTestAggregatorTest, ActiveRegionCount) {
+ EXPECT_EQ(0, aggregator_.GetActiveRegionCount());
+
+ SurfaceId e_surface_id = MakeSurfaceId(kDisplayFrameSink, 1);
+ SurfaceId c_surface_id = MakeSurfaceId(kDisplayFrameSink, 2);
+
+ auto e_hit_test_data = mojom::HitTestRegionList::New();
+ e_hit_test_data->surface_id = e_surface_id;
+ e_hit_test_data->flags = mojom::kHitTestMine;
+ e_hit_test_data->bounds.SetRect(0, 0, 1024, 768);
+
+ auto e_hit_test_region_div = mojom::HitTestRegion::New();
+ e_hit_test_region_div->flags = mojom::kHitTestMine;
+ e_hit_test_region_div->surface_id = e_surface_id;
+ e_hit_test_region_div->rect.SetRect(200, 200, 300, 200);
+
+ auto e_hit_test_region_c = mojom::HitTestRegion::New();
+ e_hit_test_region_c->flags = mojom::kHitTestChildSurface;
+ e_hit_test_region_c->surface_id = c_surface_id;
+ e_hit_test_region_c->rect.SetRect(100, 100, 200, 500);
+
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_c));
+ e_hit_test_data->regions.push_back(std::move(e_hit_test_region_div));
+
+ auto c_hit_test_data = mojom::HitTestRegionList::New();
+ c_hit_test_data->surface_id = c_surface_id;
+ c_hit_test_data->flags = mojom::kHitTestMine;
+ c_hit_test_data->bounds.SetRect(0, 0, 200, 500);
+
+ EXPECT_EQ(0, aggregator_.GetActiveRegionCount());
+
+ // Submit in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(c_hit_test_data));
+ EXPECT_EQ(1, aggregator_.GetPendingCount());
+
+ aggregator_.SubmitHitTestRegionList(std::move(e_hit_test_data));
+ EXPECT_EQ(2, aggregator_.GetPendingCount());
+
+ EXPECT_EQ(0, aggregator_.GetActiveRegionCount());
+
+ // Surfaces added to DisplayFrame in unexpected order.
+
+ EXPECT_EQ(0, aggregator_.Count());
+ EXPECT_EQ(0, aggregator_.GetActiveCount());
+
+ aggregator_.CallOnSurfaceWillDraw(e_surface_id);
+ EXPECT_EQ(1, aggregator_.GetActiveCount());
+ EXPECT_EQ(2, aggregator_.GetActiveRegionCount());
+
+ aggregator_.CallOnSurfaceWillDraw(c_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveCount());
+ EXPECT_EQ(2, aggregator_.GetActiveRegionCount());
+
+ // Aggregate and swap.
+
+ aggregator_.Aggregate(e_surface_id);
+ EXPECT_EQ(0, aggregator_.Count());
+ EXPECT_EQ(2, aggregator_.GetActiveRegionCount());
+
+ aggregator_.Swap();
+
+ EXPECT_EQ(3, aggregator_.Count());
+ EXPECT_EQ(2, aggregator_.GetActiveRegionCount());
+
+ // Discard Surface and ensure active count goes down.
+
+ aggregator_.CallOnSurfaceDiscarded(c_surface_id);
+ EXPECT_EQ(2, aggregator_.GetActiveRegionCount());
+
+ aggregator_.CallOnSurfaceDiscarded(e_surface_id);
+ EXPECT_EQ(0, aggregator_.GetActiveRegionCount());
+}
+
+} // namespace viz
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