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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/view_transition/view_transition_request.h"
#include <map>
#include <memory>
#include <sstream>
#include <utility>
#include <vector>
#include "base/functional/callback.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ptr_util.h"
#include "base/ranges/algorithm.h"
#include "cc/view_transition/view_transition_element_id.h"
#include "components/viz/common/quads/compositor_frame_transition_directive.h"
#include "components/viz/common/quads/compositor_render_pass.h"
namespace cc {
namespace {
std::string TypeToString(viz::CompositorFrameTransitionDirective::Type type) {
switch (type) {
case viz::CompositorFrameTransitionDirective::Type::kSave:
return "kSave";
case viz::CompositorFrameTransitionDirective::Type::kAnimateRenderer:
return "kAnimateRenderer";
case viz::CompositorFrameTransitionDirective::Type::kRelease:
return "kRelease";
}
return "<unknown>";
}
} // namespace
uint32_t ViewTransitionRequest::s_next_sequence_id_ = 1;
// static
std::unique_ptr<ViewTransitionRequest> ViewTransitionRequest::CreateCapture(
uint32_t document_tag,
uint32_t shared_element_count,
viz::NavigationID navigation_id,
std::vector<viz::ViewTransitionElementResourceId> capture_ids,
base::OnceClosure commit_callback) {
return base::WrapUnique(new ViewTransitionRequest(
Type::kSave, document_tag, shared_element_count, navigation_id,
std::move(capture_ids), std::move(commit_callback)));
}
// static
std::unique_ptr<ViewTransitionRequest>
ViewTransitionRequest::CreateAnimateRenderer(uint32_t document_tag,
viz::NavigationID navigation_id) {
return base::WrapUnique(
new ViewTransitionRequest(Type::kAnimateRenderer, document_tag, 0u,
navigation_id, {}, base::OnceClosure()));
}
// static
std::unique_ptr<ViewTransitionRequest> ViewTransitionRequest::CreateRelease(
uint32_t document_tag,
viz::NavigationID navigation_id) {
return base::WrapUnique(
new ViewTransitionRequest(Type::kRelease, document_tag, 0u, navigation_id,
{}, base::OnceClosure()));
}
ViewTransitionRequest::ViewTransitionRequest(
Type type,
uint32_t document_tag,
uint32_t shared_element_count,
viz::NavigationID navigation_id,
std::vector<viz::ViewTransitionElementResourceId> capture_ids,
base::OnceClosure commit_callback)
: type_(type),
document_tag_(document_tag),
shared_element_count_(shared_element_count),
navigation_id_(navigation_id),
commit_callback_(std::move(commit_callback)),
sequence_id_(s_next_sequence_id_++),
capture_resource_ids_(std::move(capture_ids)) {
DCHECK(type_ == Type::kSave || !commit_callback_);
}
ViewTransitionRequest::~ViewTransitionRequest() = default;
viz::CompositorFrameTransitionDirective
ViewTransitionRequest::ConstructDirective(
const SharedElementMap& shared_element_render_pass_id_map) const {
switch (type_) {
case Type::kRelease:
DCHECK_EQ(shared_element_count_, 0u);
DCHECK(capture_resource_ids_.empty());
return viz::CompositorFrameTransitionDirective::CreateRelease(
navigation_id_, sequence_id_);
case Type::kAnimateRenderer:
DCHECK_EQ(shared_element_count_, 0u);
DCHECK(capture_resource_ids_.empty());
return viz::CompositorFrameTransitionDirective::CreateAnimate(
navigation_id_, sequence_id_);
case Type::kSave:
break;
}
std::vector<viz::CompositorFrameTransitionDirective::SharedElement>
shared_elements(shared_element_count_);
auto capture_resource_ids = capture_resource_ids_;
for (uint32_t i = 0; i < shared_elements.size(); ++i) {
auto it = base::ranges::find_if(
shared_element_render_pass_id_map,
[this, i](const SharedElementMap::value_type& value) {
return value.first.Matches(document_tag_, i);
});
if (it == shared_element_render_pass_id_map.end())
continue;
shared_elements[i].render_pass_id = it->second.render_pass_id;
shared_elements[i].view_transition_element_resource_id =
it->second.resource_id;
// Remove the resource id from our capture ids, since we just want to have
// "empty" resource ids left -- the ones that don't have a render pass
// associated with them.
capture_resource_ids.erase(
std::remove(capture_resource_ids.begin(), capture_resource_ids.end(),
it->second.resource_id),
capture_resource_ids.end());
}
// Add invalid render pass id for each empty resource id left in capture ids.
for (auto& empty_resource_id : capture_resource_ids) {
shared_elements.emplace_back();
shared_elements.back().view_transition_element_resource_id =
empty_resource_id;
}
return viz::CompositorFrameTransitionDirective::CreateSave(
navigation_id_, sequence_id_, std::move(shared_elements));
}
std::string ViewTransitionRequest::ToString() const {
std::ostringstream str;
str << "[type: " << TypeToString(type_) << " sequence_id: " << sequence_id_
<< "]";
return str.str();
}
ViewTransitionRequest::SharedElementInfo::SharedElementInfo() = default;
ViewTransitionRequest::SharedElementInfo::~SharedElementInfo() = default;
} // namespace cc
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