| // Copyright 2019 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 "third_party/blink/renderer/modules/xr/xr_transient_input_hit_test_source.h" |
| |
| #include "third_party/blink/renderer/modules/xr/xr_input_source_array.h" |
| #include "third_party/blink/renderer/modules/xr/xr_session.h" |
| #include "third_party/blink/renderer/modules/xr/xr_transient_input_hit_test_result.h" |
| #include "third_party/blink/renderer/platform/bindings/exception_state.h" |
| |
| #include "device/vr/public/mojom/vr_service.mojom-blink.h" |
| |
| namespace { |
| const char* kCannotCancelHitTestSource = |
| "Hit test source could not be canceled. Ensure that it was not already " |
| "canceled."; |
| } |
| |
| namespace blink { |
| |
| XRTransientInputHitTestSource::XRTransientInputHitTestSource( |
| uint64_t id, |
| XRSession* xr_session) |
| : id_(id), xr_session_(xr_session) { |
| DCHECK(xr_session_); |
| } |
| |
| uint64_t XRTransientInputHitTestSource::id() const { |
| return id_; |
| } |
| |
| void XRTransientInputHitTestSource::cancel(ExceptionState& exception_state) { |
| DVLOG(2) << __func__; |
| |
| if (!xr_session_->RemoveHitTestSource(this)) { |
| exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError, |
| kCannotCancelHitTestSource); |
| } |
| } |
| |
| void XRTransientInputHitTestSource::Update( |
| const HashMap<uint32_t, Vector<device::mojom::blink::XRHitResultPtr>>& |
| hit_test_results, |
| XRInputSourceArray* input_source_array) { |
| // TODO: Be smarter about the update - it's possible to add new resulst / |
| // remove the ones that were removed & update the ones that are being changed. |
| current_frame_results_.clear(); |
| |
| // If we don't know anything about input sources, we won't be able to |
| // construct any results so we are done (and current_frame_results_ should |
| // stay empty). |
| if (!input_source_array) { |
| return; |
| } |
| |
| for (const auto& source_id_and_results : hit_test_results) { |
| XRInputSource* input_source = |
| input_source_array->GetWithSourceId(source_id_and_results.key); |
| // If the input source with the given ID could not be found, just skip |
| // processing results for this input source. |
| if (!input_source) |
| continue; |
| |
| // If the input source is not visible, ignore it. |
| if (input_source->IsVisible()) { |
| current_frame_results_.push_back( |
| MakeGarbageCollected<XRTransientInputHitTestResult>( |
| input_source, source_id_and_results.value)); |
| } |
| } |
| } |
| |
| HeapVector<Member<XRTransientInputHitTestResult>> |
| XRTransientInputHitTestSource::Results() { |
| return current_frame_results_; |
| } |
| |
| void XRTransientInputHitTestSource::Trace(Visitor* visitor) const { |
| visitor->Trace(current_frame_results_); |
| visitor->Trace(xr_session_); |
| ScriptWrappable::Trace(visitor); |
| } |
| |
| } // namespace blink |