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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/ozone/platform/wayland/host/wayland_seat.h"
#include "base/logging.h"
#include "ui/events/ozone/layout/keyboard_layout_engine_manager.h"
#include "ui/ozone/platform/wayland/host/wayland_connection.h"
#include "ui/ozone/platform/wayland/host/wayland_event_source.h"
#include "ui/ozone/platform/wayland/host/wayland_keyboard.h"
#include "ui/ozone/platform/wayland/host/wayland_pointer.h"
#include "ui/ozone/platform/wayland/host/wayland_touch.h"
namespace ui {
namespace {
constexpr uint32_t kMinVersion = 1;
constexpr uint32_t kMaxVersion = 8;
} // namespace
// static
void WaylandSeat::Instantiate(WaylandConnection* connection,
wl_registry* registry,
uint32_t name,
const std::string& interface,
uint32_t version) {
CHECK_EQ(interface, kInterfaceName) << "Expected \"" << kInterfaceName
<< "\" but got \"" << interface << "\"";
if (connection->seat_ ||
!wl::CanBind(interface, version, kMinVersion, kMaxVersion)) {
return;
}
auto seat = wl::Bind<wl_seat>(registry, name, std::min(version, kMaxVersion));
if (!seat) {
LOG(ERROR) << "Failed to bind to wl_seat global";
return;
}
connection->seat_ = std::make_unique<WaylandSeat>(seat.release(), connection);
// The seat is one of objects needed for data exchange. Notify the connection
// so it might set up the rest if all other parts are in place.
connection->CreateDataObjectsIfReady();
}
WaylandSeat::WaylandSeat(wl_seat* seat, WaylandConnection* connection)
: obj_(seat), connection_(connection) {
DCHECK(connection_);
DCHECK(obj_);
static constexpr wl_seat_listener kSeatListener = {
.capabilities = &OnCapabilities,
.name = &OnName,
};
wl_seat_add_listener(wl_object(), &kSeatListener, this);
}
WaylandSeat::~WaylandSeat() = default;
bool WaylandSeat::RefreshKeyboard() {
// Make sure to destroy the old WaylandKeyboard (if it exists) before creating
// the new one.
keyboard_.reset();
wl_keyboard* keyboard = wl_seat_get_keyboard(wl_object());
if (!keyboard)
return false;
auto* layout_engine = KeyboardLayoutEngineManager::GetKeyboardLayoutEngine();
keyboard_ = std::make_unique<WaylandKeyboard>(
keyboard, connection_->keyboard_extension_v1_.get(), connection_,
layout_engine, connection_->event_source());
return true;
}
// static
void WaylandSeat::OnCapabilities(void* data,
wl_seat* seat,
uint32_t capabilities) {
auto* self = static_cast<WaylandSeat*>(data);
self->HandleCapabilities(data, seat, capabilities);
}
// static
void WaylandSeat::OnName(void* data, wl_seat* seat, const char* name) {
NOTIMPLEMENTED_LOG_ONCE();
}
void WaylandSeat::HandleCapabilities(void* data,
wl_seat* seat,
uint32_t capabilities) {
DCHECK(connection_->event_source());
bool prev_keyboard_available = !!keyboard_;
if (capabilities & WL_SEAT_CAPABILITY_KEYBOARD) {
if (!RefreshKeyboard()) {
LOG(ERROR) << "Failed to get wl_keyboard from seat";
}
} else {
keyboard_.reset();
}
if (capabilities & WL_SEAT_CAPABILITY_POINTER) {
if (wl_pointer* pointer = wl_seat_get_pointer(seat)) {
pointer_ = std::make_unique<WaylandPointer>(pointer, connection_,
connection_->event_source());
} else {
LOG(ERROR) << "Failed to get wl_pointer from seat";
}
} else {
pointer_.reset();
}
if (capabilities & WL_SEAT_CAPABILITY_TOUCH) {
if (wl_touch* touch = wl_seat_get_touch(seat)) {
touch_ = std::make_unique<WaylandTouch>(touch, connection_,
connection_->event_source());
} else {
LOG(ERROR) << "Failed to get wl_touch from seat";
}
} else {
touch_.reset();
}
connection_->UpdateInputDevices();
connection_->UpdateCursor();
connection_->Flush();
bool keyboard_available = !!keyboard_;
if (keyboard_available != prev_keyboard_available) {
// Keyboard focus can be used to determine window active state depending on
// keyboard availability.
connection_->window_manager()->UpdateActivationState();
}
}
} // namespace ui
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