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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/viz/common/surfaces/surface_range.h"
#include <ostream>
#include <string>
#include "base/strings/stringprintf.h"
namespace viz {
SurfaceRange::SurfaceRange() = default;
SurfaceRange::SurfaceRange(const std::optional<SurfaceId>& start,
const SurfaceId& end)
: start_(start), end_(end) {}
SurfaceRange::SurfaceRange(const SurfaceId& surface_id)
: start_(surface_id), end_(surface_id) {}
SurfaceRange::SurfaceRange(const SurfaceRange& other) = default;
SurfaceRange& SurfaceRange::operator=(const SurfaceRange& other) = default;
bool SurfaceRange::IsInRangeExclusive(const SurfaceId& surface_id) const {
if (!start_)
return end_.IsNewerThan(surface_id);
if (HasDifferentFrameSinkIds() ||
end_.local_surface_id().embed_token() !=
start_->local_surface_id().embed_token()) {
return surface_id.IsNewerThan(*start_) || end_.IsNewerThan(surface_id);
}
return surface_id.IsNewerThan(*start_) && end_.IsNewerThan(surface_id);
}
bool SurfaceRange::IsInRangeInclusive(const SurfaceId& surface_id) const {
return IsInRangeExclusive(surface_id) || end_ == surface_id ||
start_ == surface_id;
}
bool SurfaceRange::HasDifferentFrameSinkIds() const {
return start_ && start_->frame_sink_id() != end_.frame_sink_id();
}
bool SurfaceRange::HasDifferentEmbedTokens() const {
return start_ && start_->local_surface_id().embed_token() !=
end_.local_surface_id().embed_token();
}
bool SurfaceRange::IsValid() const {
if (!end_.is_valid())
return false;
if (!start_)
return true;
if (!start_->is_valid())
return false;
// The start/end SurfaceIds can have a different FrameSinkId or embed token
// for cross SiteInstanceGroup navigations.
if (end_.frame_sink_id() != start_->frame_sink_id())
return true;
if (end_.local_surface_id().embed_token() !=
start_->local_surface_id().embed_token()) {
return true;
}
return end_.local_surface_id().IsSameOrNewerThan(start_->local_surface_id());
}
std::string SurfaceRange::ToString() const {
return base::StringPrintf("SurfaceRange(start: %s, end: %s)",
start_ ? start_->ToString().c_str() : "none",
end_.ToString().c_str());
}
std::ostream& operator<<(std::ostream& out, const SurfaceRange& surface_range) {
return out << surface_range.ToString();
}
} // namespace viz
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