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// Copyright 2021 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_zwp_pointer_gestures.h"
#include <wayland-util.h>
#include "base/logging.h"
#include "ui/gfx/geometry/vector2d_f.h"
#include "ui/ozone/platform/wayland/common/wayland_util.h"
#include "ui/ozone/platform/wayland/host/wayland_connection.h"
#include "ui/ozone/platform/wayland/host/wayland_cursor_position.h"
#include "ui/ozone/platform/wayland/host/wayland_event_source.h"
#include "ui/ozone/platform/wayland/host/wayland_pointer.h"
#include "ui/ozone/platform/wayland/host/wayland_seat.h"
#include "ui/ozone/platform/wayland/host/wayland_window_manager.h"
namespace ui {
namespace {
constexpr uint32_t kMinVersion = 1;
constexpr uint32_t kMaxVersion = 3;
} // namespace
// static
constexpr char WaylandZwpPointerGestures::kInterfaceName[];
// static
void WaylandZwpPointerGestures::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->zwp_pointer_gestures_ ||
!wl::CanBind(interface, version, kMinVersion, kMinVersion)) {
return;
}
auto zwp_pointer_gestures_v1 = wl::Bind<struct zwp_pointer_gestures_v1>(
registry, name, std::min(version, kMaxVersion));
if (!zwp_pointer_gestures_v1) {
LOG(ERROR) << "Failed to bind wp_pointer_gestures_v1";
return;
}
connection->zwp_pointer_gestures_ =
std::make_unique<WaylandZwpPointerGestures>(
zwp_pointer_gestures_v1.release(), connection,
connection->event_source());
}
WaylandZwpPointerGestures::WaylandZwpPointerGestures(
zwp_pointer_gestures_v1* pointer_gestures,
WaylandConnection* connection,
Delegate* delegate)
: obj_(pointer_gestures), connection_(connection), delegate_(delegate) {
DCHECK(obj_);
DCHECK(connection_);
DCHECK(delegate_);
}
WaylandZwpPointerGestures::~WaylandZwpPointerGestures() = default;
void WaylandZwpPointerGestures::Init() {
DCHECK(connection_->seat());
DCHECK(connection_->seat()->pointer());
wl_pointer* pointer = connection_->seat()->pointer()->wl_object();
pinch_.reset(zwp_pointer_gestures_v1_get_pinch_gesture(obj_.get(), pointer));
static constexpr zwp_pointer_gesture_pinch_v1_listener kPinchListener = {
.begin = &OnPinchBegin,
.update = &OnPinchUpdate,
.end = &OnPinchEnd,
};
zwp_pointer_gesture_pinch_v1_add_listener(pinch_.get(), &kPinchListener,
this);
#if defined(ZWP_POINTER_GESTURES_V1_GET_HOLD_GESTURE_SINCE_VERSION)
if (zwp_pointer_gestures_v1_get_version(obj_.get()) <
ZWP_POINTER_GESTURES_V1_GET_HOLD_GESTURE_SINCE_VERSION) {
return;
}
hold_.reset(zwp_pointer_gestures_v1_get_hold_gesture(obj_.get(), pointer));
static constexpr zwp_pointer_gesture_hold_v1_listener kHoldListener = {
.begin = &OnHoldBegin, .end = &OnHoldEnd};
zwp_pointer_gesture_hold_v1_add_listener(hold_.get(), &kHoldListener, this);
#endif
}
// static
void WaylandZwpPointerGestures::OnPinchBegin(
void* data,
struct zwp_pointer_gesture_pinch_v1* zwp_pointer_gesture_pinch_v1,
uint32_t serial,
uint32_t time,
struct wl_surface* surface,
uint32_t fingers) {
auto* self = static_cast<WaylandZwpPointerGestures*>(data);
self->current_scale_ = 1;
self->delegate_->OnPinchEvent(
EventType::kGesturePinchBegin, gfx::Vector2dF() /*delta*/,
wl::EventMillisecondsToTimeTicks(time), self->obj_.id());
}
// static
void WaylandZwpPointerGestures::OnPinchUpdate(
void* data,
struct zwp_pointer_gesture_pinch_v1* zwp_pointer_gesture_pinch_v1,
uint32_t time,
wl_fixed_t dx,
wl_fixed_t dy,
wl_fixed_t scale,
wl_fixed_t rotation) {
auto* self = static_cast<WaylandZwpPointerGestures*>(data);
// During the pinch zoom session, libinput sends the current scale relative to
// the start of the session. On the other hand, the compositor expects the
// change of the scale relative to the previous update in form of a multiplier
// applied to the current value.
// See https://crbug.com/1283652
const auto new_scale = wl_fixed_to_double(scale);
const auto scale_delta = new_scale / self->current_scale_;
self->current_scale_ = new_scale;
gfx::Vector2dF delta = {static_cast<float>(wl_fixed_to_double(dx)),
static_cast<float>(wl_fixed_to_double(dy))};
self->delegate_->OnPinchEvent(EventType::kGesturePinchUpdate, delta,
wl::EventMillisecondsToTimeTicks(time),
self->obj_.id(), scale_delta);
}
void WaylandZwpPointerGestures::OnPinchEnd(
void* data,
struct zwp_pointer_gesture_pinch_v1* zwp_pointer_gesture_pinch_v1,
uint32_t serial,
uint32_t time,
int32_t cancelled) {
auto* self = static_cast<WaylandZwpPointerGestures*>(data);
self->delegate_->OnPinchEvent(
EventType::kGesturePinchEnd, gfx::Vector2dF() /*delta*/,
wl::EventMillisecondsToTimeTicks(time), self->obj_.id());
}
#if defined(ZWP_POINTER_GESTURE_HOLD_V1_BEGIN_SINCE_VERSION)
// static
void WaylandZwpPointerGestures::OnHoldBegin(
void* data,
struct zwp_pointer_gesture_hold_v1* zwp_pointer_gesture_hold_v1,
uint32_t serial,
uint32_t time,
struct wl_surface* surface,
uint32_t fingers) {
auto* self = static_cast<WaylandZwpPointerGestures*>(data);
self->delegate_->OnHoldEvent(
EventType::kTouchPressed, fingers, wl::EventMillisecondsToTimeTicks(time),
self->obj_.id(), wl::EventDispatchPolicy::kImmediate);
}
#endif
#if defined(ZWP_POINTER_GESTURE_HOLD_V1_END_SINCE_VERSION)
// static
void WaylandZwpPointerGestures::OnHoldEnd(
void* data,
struct zwp_pointer_gesture_hold_v1* zwp_pointer_gesture_hold_v1,
uint32_t serial,
uint32_t time,
int32_t cancelled) {
auto* self = static_cast<WaylandZwpPointerGestures*>(data);
self->delegate_->OnHoldEvent(
cancelled ? EventType::kTouchCancelled : EventType::kTouchReleased, 0,
wl::EventMillisecondsToTimeTicks(time), self->obj_.id(),
wl::EventDispatchPolicy::kImmediate);
}
#endif
} // namespace ui
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