chromium/ui/events/ozone/evdev/libgestures_glue/haptic_touchpad_handler.cc

// 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/events/ozone/evdev/libgestures_glue/haptic_touchpad_handler.h"

#include <linux/input.h>
#include <sys/ioctl.h>
#include <unistd.h>

#include "base/logging.h"
#include "base/posix/eintr_wrapper.h"
#include "ui/events/ozone/evdev/input_device_settings_evdev.h"

// TODO(b/205702807): Remove these definitions when the new version of input.h
// is rolled in.
#ifndef EVIOCFFTAKECONTROL
#define EVIOCFFTAKECONTROL …
#define EVIOCFFRELEASECONTROL …

#define FF_HID …

struct ff_hid_effect { … };

local_ff_effect;
#else
using local_ff_effect = ff_effect;
#endif

namespace ui {

namespace {
constexpr int kInvalidEffectId = …;
constexpr int kReleaseEffectId = …;
constexpr int kPressEffectId = …;

constexpr uint16_t kGoogleVendorId = …;
constexpr uint8_t kHIDWaveformUsagePage = …;

constexpr struct { … } kEffectToHIDUsage[] = …;

}  // namespace

// static
std::unique_ptr<HapticTouchpadHandler> HapticTouchpadHandler::Create(
    int fd,
    const EventDeviceInfo& devinfo) { … }

HapticTouchpadHandler::HapticTouchpadHandler(int fd)
    : … { … }

void HapticTouchpadHandler::Initialize() { … }

HapticTouchpadHandler::~HapticTouchpadHandler() = default;

bool HapticTouchpadHandler::IsValid() { … }

void HapticTouchpadHandler::SetEffectForNextButtonRelease(
    HapticTouchpadEffect effect,
    HapticTouchpadEffectStrength strength) { … }

void HapticTouchpadHandler::SetClickStrength(
    HapticTouchpadEffectStrength strength) { … }

void HapticTouchpadHandler::OnGestureClick(bool press) { … }

void HapticTouchpadHandler::PlayEffect(HapticTouchpadEffect effect,
                                       HapticTouchpadEffectStrength strength) { … }

bool HapticTouchpadHandler::SetupFf() { … }

void HapticTouchpadHandler::DestroyAllFfEffects() { … }

void HapticTouchpadHandler::DestroyFfEffect(int effect_id) { … }

void HapticTouchpadHandler::PlayFfEffect(int effect_id) { … }

int HapticTouchpadHandler::UploadFfEffect(uint16_t hid_usage,
                                          uint8_t intensity) { … }

bool HapticTouchpadHandler::TakeControlOfClickEffects() { … }

void HapticTouchpadHandler::ReleaseControlOfClickEffects() { … }

}  // namespace ui