ui/events/devices/x11/device_data_manager_x11.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/events/devices/x11/device_data_manager_x11.h"
   6
   7 #include <X11/extensions/XInput.h>
   8 #include <X11/extensions/XInput2.h>
   9 #include <X11/Xlib.h>
  10
  11 #include <utility>
  12
  13 #include "base/logging.h"
  14 #include "base/memory/singleton.h"
  15 #include "base/sys_info.h"
  16 #include "ui/events/devices/keyboard_device.h"
  17 #include "ui/events/devices/x11/device_list_cache_x11.h"
  18 #include "ui/events/devices/x11/touch_factory_x11.h"
  19 #include "ui/events/event_constants.h"
  20 #include "ui/events/event_switches.h"
  21 #include "ui/events/keycodes/keyboard_code_conversion_x.h"
  22 #include "ui/gfx/display.h"
  23 #include "ui/gfx/geometry/point3_f.h"
  24 #include "ui/gfx/x/x11_types.h"
  25
  26 // XIScrollClass was introduced in XI 2.1 so we need to define it here
  27 // for backward-compatibility with older versions of XInput.
  28 #if !defined(XIScrollClass)
  29 #define XIScrollClass 3
  30 #endif
  31
  32 // Multi-touch support was introduced in XI 2.2. Add XI event types here
  33 // for backward-compatibility with older versions of XInput.
  34 #if !defined(XI_TouchBegin)
  35 #define XI_TouchBegin  18
  36 #define XI_TouchUpdate 19
  37 #define XI_TouchEnd    20
  38 #endif
  39
  40 // Copied from xserver-properties.h
  41 #define AXIS_LABEL_PROP_REL_HWHEEL "Rel Horiz Wheel"
  42 #define AXIS_LABEL_PROP_REL_WHEEL "Rel Vert Wheel"
  43
  44 // CMT specific timings
  45 #define AXIS_LABEL_PROP_ABS_DBL_START_TIME "Abs Dbl Start Timestamp"
  46 #define AXIS_LABEL_PROP_ABS_DBL_END_TIME   "Abs Dbl End Timestamp"
  47
  48 // Ordinal values
  49 #define AXIS_LABEL_PROP_ABS_DBL_ORDINAL_X   "Abs Dbl Ordinal X"
  50 #define AXIS_LABEL_PROP_ABS_DBL_ORDINAL_Y   "Abs Dbl Ordinal Y"
  51
  52 // Fling properties
  53 #define AXIS_LABEL_PROP_ABS_DBL_FLING_VX   "Abs Dbl Fling X Velocity"
  54 #define AXIS_LABEL_PROP_ABS_DBL_FLING_VY   "Abs Dbl Fling Y Velocity"
  55 #define AXIS_LABEL_PROP_ABS_FLING_STATE   "Abs Fling State"
  56
  57 #define AXIS_LABEL_PROP_ABS_FINGER_COUNT   "Abs Finger Count"
  58
  59 // Cros metrics gesture from touchpad
  60 #define AXIS_LABEL_PROP_ABS_METRICS_TYPE      "Abs Metrics Type"
  61 #define AXIS_LABEL_PROP_ABS_DBL_METRICS_DATA1 "Abs Dbl Metrics Data 1"
  62 #define AXIS_LABEL_PROP_ABS_DBL_METRICS_DATA2 "Abs Dbl Metrics Data 2"
  63
  64 // Touchscreen multi-touch
  65 #define AXIS_LABEL_ABS_MT_TOUCH_MAJOR "Abs MT Touch Major"
  66 #define AXIS_LABEL_ABS_MT_TOUCH_MINOR "Abs MT Touch Minor"
  67 #define AXIS_LABEL_ABS_MT_ORIENTATION "Abs MT Orientation"
  68 #define AXIS_LABEL_ABS_MT_PRESSURE    "Abs MT Pressure"
  69 #define AXIS_LABEL_ABS_MT_POSITION_X  "Abs MT Position X"
  70 #define AXIS_LABEL_ABS_MT_POSITION_Y  "Abs MT Position Y"
  71 #define AXIS_LABEL_ABS_MT_TRACKING_ID "Abs MT Tracking ID"
  72 #define AXIS_LABEL_TOUCH_TIMESTAMP    "Touch Timestamp"
  73
  74 // When you add new data types, please make sure the order here is aligned
  75 // with the order in the DataType enum in the header file because we assume
  76 // they are in sync when updating the device list (see UpdateDeviceList).
  77 const char* kCachedAtoms[] = {
  78   AXIS_LABEL_PROP_REL_HWHEEL,
  79   AXIS_LABEL_PROP_REL_WHEEL,
  80   AXIS_LABEL_PROP_ABS_DBL_ORDINAL_X,
  81   AXIS_LABEL_PROP_ABS_DBL_ORDINAL_Y,
  82   AXIS_LABEL_PROP_ABS_DBL_START_TIME,
  83   AXIS_LABEL_PROP_ABS_DBL_END_TIME,
  84   AXIS_LABEL_PROP_ABS_DBL_FLING_VX,
  85   AXIS_LABEL_PROP_ABS_DBL_FLING_VY,
  86   AXIS_LABEL_PROP_ABS_FLING_STATE,
  87   AXIS_LABEL_PROP_ABS_METRICS_TYPE,
  88   AXIS_LABEL_PROP_ABS_DBL_METRICS_DATA1,
  89   AXIS_LABEL_PROP_ABS_DBL_METRICS_DATA2,
  90   AXIS_LABEL_PROP_ABS_FINGER_COUNT,
  91   AXIS_LABEL_ABS_MT_TOUCH_MAJOR,
  92   AXIS_LABEL_ABS_MT_TOUCH_MINOR,
  93   AXIS_LABEL_ABS_MT_ORIENTATION,
  94   AXIS_LABEL_ABS_MT_PRESSURE,
  95   AXIS_LABEL_ABS_MT_POSITION_X,
  96   AXIS_LABEL_ABS_MT_POSITION_Y,
  97   AXIS_LABEL_ABS_MT_TRACKING_ID,
  98   AXIS_LABEL_TOUCH_TIMESTAMP,
  99
 100   NULL
 101 };
 102
 103 // Constants for checking if a data type lies in the range of CMT/Touch data
 104 // types.
 105 const int kCMTDataTypeStart = ui::DeviceDataManagerX11::DT_CMT_SCROLL_X;
 106 const int kCMTDataTypeEnd = ui::DeviceDataManagerX11::DT_CMT_FINGER_COUNT;
 107 const int kTouchDataTypeStart = ui::DeviceDataManagerX11::DT_TOUCH_MAJOR;
 108 const int kTouchDataTypeEnd = ui::DeviceDataManagerX11::DT_TOUCH_RAW_TIMESTAMP;
 109
 110 namespace ui {
 111
 112 namespace {
 113
 114 bool DeviceHasId(const ui::InputDevice input_device, unsigned int id) {
 115   return input_device.id == id;
 116 }
 117
 118 }  // namespace
 119
 120 bool DeviceDataManagerX11::IsCMTDataType(const int type) {
 121   return (type >= kCMTDataTypeStart) && (type <= kCMTDataTypeEnd);
 122 }
 123
 124 bool DeviceDataManagerX11::IsTouchDataType(const int type) {
 125   return (type >= kTouchDataTypeStart) && (type <= kTouchDataTypeEnd);
 126 }
 127
 128 // static
 129 void DeviceDataManagerX11::CreateInstance() {
 130   if (instance())
 131     return;
 132
 133   new DeviceDataManagerX11();
 134 }
 135
 136 // static
 137 DeviceDataManagerX11* DeviceDataManagerX11::GetInstance() {
 138   return static_cast<DeviceDataManagerX11*>(DeviceDataManager::GetInstance());
 139 }
 140
 141 DeviceDataManagerX11::DeviceDataManagerX11()
 142     : xi_opcode_(-1),
 143       atom_cache_(gfx::GetXDisplay(), kCachedAtoms),
 144       button_map_count_(0) {
 145   CHECK(gfx::GetXDisplay());
 146   InitializeXInputInternal();
 147
 148   // Make sure the sizes of enum and kCachedAtoms are aligned.
 149   CHECK(arraysize(kCachedAtoms) == static_cast<size_t>(DT_LAST_ENTRY) + 1);
 150   UpdateDeviceList(gfx::GetXDisplay());
 151   UpdateButtonMap();
 152 }
 153
 154 DeviceDataManagerX11::~DeviceDataManagerX11() {
 155 }
 156
 157 bool DeviceDataManagerX11::InitializeXInputInternal() {
 158   // Check if XInput is available on the system.
 159   xi_opcode_ = -1;
 160   int opcode, event, error;
 161   if (!XQueryExtension(
 162       gfx::GetXDisplay(), "XInputExtension", &opcode, &event, &error)) {
 163     VLOG(1) << "X Input extension not available: error=" << error;
 164     return false;
 165   }
 166
 167   // Check the XInput version.
 168   int major = 2, minor = 2;
 169   if (XIQueryVersion(gfx::GetXDisplay(), &major, &minor) == BadRequest) {
 170     VLOG(1) << "XInput2 not supported in the server.";
 171     return false;
 172   }
 173   if (major < 2 || (major == 2 && minor < 2)) {
 174     DVLOG(1) << "XI version on server is " << major << "." << minor << ". "
 175             << "But 2.2 is required.";
 176     return false;
 177   }
 178
 179   xi_opcode_ = opcode;
 180   CHECK_NE(-1, xi_opcode_);
 181
 182   // Possible XI event types for XIDeviceEvent. See the XI2 protocol
 183   // specification.
 184   xi_device_event_types_[XI_KeyPress] = true;
 185   xi_device_event_types_[XI_KeyRelease] = true;
 186   xi_device_event_types_[XI_ButtonPress] = true;
 187   xi_device_event_types_[XI_ButtonRelease] = true;
 188   xi_device_event_types_[XI_Motion] = true;
 189   // Multi-touch support was introduced in XI 2.2.
 190   if (minor >= 2) {
 191     xi_device_event_types_[XI_TouchBegin] = true;
 192     xi_device_event_types_[XI_TouchUpdate] = true;
 193     xi_device_event_types_[XI_TouchEnd] = true;
 194   }
 195   return true;
 196 }
 197
 198 bool DeviceDataManagerX11::IsXInput2Available() const {
 199   return xi_opcode_ != -1;
 200 }
 201
 202 void DeviceDataManagerX11::UpdateDeviceList(Display* display) {
 203   cmt_devices_.reset();
 204   touchpads_.reset();
 205   master_pointers_.clear();
 206   for (int i = 0; i < kMaxDeviceNum; ++i) {
 207     valuator_count_[i] = 0;
 208     valuator_lookup_[i].clear();
 209     data_type_lookup_[i].clear();
 210     valuator_min_[i].clear();
 211     valuator_max_[i].clear();
 212     for (int j = 0; j < kMaxSlotNum; j++)
 213       last_seen_valuator_[i][j].clear();
 214   }
 215
 216   // Find all the touchpad devices.
 217   const XDeviceList& dev_list =
 218       ui::DeviceListCacheX11::GetInstance()->GetXDeviceList(display);
 219   Atom xi_touchpad = XInternAtom(display, XI_TOUCHPAD, false);
 220   for (int i = 0; i < dev_list.count; ++i)
 221     if (dev_list[i].type == xi_touchpad)
 222       touchpads_[dev_list[i].id] = true;
 223
 224   if (!IsXInput2Available())
 225     return;
 226
 227   // Update the structs with new valuator information
 228   const XIDeviceList& info_list =
 229       ui::DeviceListCacheX11::GetInstance()->GetXI2DeviceList(display);
 230   Atom atoms[DT_LAST_ENTRY];
 231   for (int data_type = 0; data_type < DT_LAST_ENTRY; ++data_type)
 232     atoms[data_type] = atom_cache_.GetAtom(kCachedAtoms[data_type]);
 233
 234   for (int i = 0; i < info_list.count; ++i) {
 235     const XIDeviceInfo& info = info_list[i];
 236
 237     if (info.use == XIMasterPointer)
 238       master_pointers_.push_back(info.deviceid);
 239
 240     // We currently handle only slave, non-keyboard devices
 241     if (info.use != XISlavePointer && info.use != XIFloatingSlave)
 242       continue;
 243
 244     bool possible_cmt = false;
 245     bool not_cmt = false;
 246     const int deviceid = info.deviceid;
 247
 248     for (int j = 0; j < info.num_classes; ++j) {
 249       if (info.classes[j]->type == XIValuatorClass)
 250         ++valuator_count_[deviceid];
 251       else if (info.classes[j]->type == XIScrollClass)
 252         not_cmt = true;
 253     }
 254
 255     // Skip devices that don't use any valuator
 256     if (!valuator_count_[deviceid])
 257       continue;
 258
 259     valuator_lookup_[deviceid].resize(DT_LAST_ENTRY, -1);
 260     data_type_lookup_[deviceid].resize(
 261         valuator_count_[deviceid], DT_LAST_ENTRY);
 262     valuator_min_[deviceid].resize(DT_LAST_ENTRY, 0);
 263     valuator_max_[deviceid].resize(DT_LAST_ENTRY, 0);
 264     for (int j = 0; j < kMaxSlotNum; j++)
 265       last_seen_valuator_[deviceid][j].resize(DT_LAST_ENTRY, 0);
 266     for (int j = 0; j < info.num_classes; ++j) {
 267       if (info.classes[j]->type != XIValuatorClass)
 268         continue;
 269
 270       XIValuatorClassInfo* v =
 271           reinterpret_cast<XIValuatorClassInfo*>(info.classes[j]);
 272       for (int data_type = 0; data_type < DT_LAST_ENTRY; ++data_type) {
 273         if (v->label == atoms[data_type]) {
 274           valuator_lookup_[deviceid][data_type] = v->number;
 275           data_type_lookup_[deviceid][v->number] = data_type;
 276           valuator_min_[deviceid][data_type] = v->min;
 277           valuator_max_[deviceid][data_type] = v->max;
 278           if (IsCMTDataType(data_type))
 279             possible_cmt = true;
 280           break;
 281         }
 282       }
 283     }
 284
 285     if (possible_cmt && !not_cmt)
 286       cmt_devices_[deviceid] = true;
 287   }
 288 }
 289
 290 bool DeviceDataManagerX11::GetSlotNumber(const XIDeviceEvent* xiev, int* slot) {
 291   ui::TouchFactory* factory = ui::TouchFactory::GetInstance();
 292   if (!factory->IsMultiTouchDevice(xiev->sourceid)) {
 293     *slot = 0;
 294     return true;
 295   }
 296   return factory->QuerySlotForTrackingID(xiev->detail, slot);
 297 }
 298
 299 void DeviceDataManagerX11::GetEventRawData(const XEvent& xev, EventData* data) {
 300   if (xev.type != GenericEvent)
 301     return;
 302
 303   XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(xev.xcookie.data);
 304   if (xiev->sourceid >= kMaxDeviceNum || xiev->deviceid >= kMaxDeviceNum)
 305     return;
 306   data->clear();
 307   const int sourceid = xiev->sourceid;
 308   double* valuators = xiev->valuators.values;
 309   for (int i = 0; i <= valuator_count_[sourceid]; ++i) {
 310     if (XIMaskIsSet(xiev->valuators.mask, i)) {
 311       int type = data_type_lookup_[sourceid][i];
 312       if (type != DT_LAST_ENTRY) {
 313         (*data)[type] = *valuators;
 314         if (IsTouchDataType(type)) {
 315           int slot = -1;
 316           if (GetSlotNumber(xiev, &slot) && slot >= 0 && slot < kMaxSlotNum)
 317             last_seen_valuator_[sourceid][slot][type] = *valuators;
 318         }
 319       }
 320       valuators++;
 321     }
 322   }
 323 }
 324
 325 bool DeviceDataManagerX11::GetEventData(const XEvent& xev,
 326     const DataType type, double* value) {
 327   if (xev.type != GenericEvent)
 328     return false;
 329
 330   XIDeviceEvent* xiev = static_cast<XIDeviceEvent*>(xev.xcookie.data);
 331   if (xiev->sourceid >= kMaxDeviceNum || xiev->deviceid >= kMaxDeviceNum)
 332     return false;
 333   const int sourceid = xiev->sourceid;
 334   if (valuator_lookup_[sourceid].empty())
 335     return false;
 336
 337   if (type == DT_TOUCH_TRACKING_ID) {
 338     // With XInput2 MT, Tracking ID is provided in the detail field for touch
 339     // events.
 340     if (xiev->evtype == XI_TouchBegin ||
 341         xiev->evtype == XI_TouchEnd ||
 342         xiev->evtype == XI_TouchUpdate) {
 343       *value = xiev->detail;
 344     } else {
 345       *value = 0;
 346     }
 347     return true;
 348   }
 349
 350   int val_index = valuator_lookup_[sourceid][type];
 351   int slot = 0;
 352   if (val_index >= 0) {
 353     if (XIMaskIsSet(xiev->valuators.mask, val_index)) {
 354       double* valuators = xiev->valuators.values;
 355       while (val_index--) {
 356         if (XIMaskIsSet(xiev->valuators.mask, val_index))
 357           ++valuators;
 358       }
 359       *value = *valuators;
 360       if (IsTouchDataType(type)) {
 361         if (GetSlotNumber(xiev, &slot) && slot >= 0 && slot < kMaxSlotNum)
 362           last_seen_valuator_[sourceid][slot][type] = *value;
 363       }
 364       return true;
 365     } else if (IsTouchDataType(type)) {
 366       if (GetSlotNumber(xiev, &slot) && slot >= 0 && slot < kMaxSlotNum)
 367         *value = last_seen_valuator_[sourceid][slot][type];
 368     }
 369   }
 370
 371   return false;
 372 }
 373
 374 bool DeviceDataManagerX11::IsXIDeviceEvent(
 375     const base::NativeEvent& native_event) const {
 376   if (native_event->type != GenericEvent ||
 377       native_event->xcookie.extension != xi_opcode_)
 378     return false;
 379   return xi_device_event_types_[native_event->xcookie.evtype];
 380 }
 381
 382 bool DeviceDataManagerX11::IsTouchpadXInputEvent(
 383     const base::NativeEvent& native_event) const {
 384   if (native_event->type != GenericEvent)
 385     return false;
 386
 387   XIDeviceEvent* xievent =
 388       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 389   if (xievent->sourceid >= kMaxDeviceNum)
 390     return false;
 391   return touchpads_[xievent->sourceid];
 392 }
 393
 394 bool DeviceDataManagerX11::IsCMTDeviceEvent(
 395     const base::NativeEvent& native_event) const {
 396   if (native_event->type != GenericEvent)
 397     return false;
 398
 399   XIDeviceEvent* xievent =
 400       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 401   if (xievent->sourceid >= kMaxDeviceNum)
 402     return false;
 403   return cmt_devices_[xievent->sourceid];
 404 }
 405
 406 bool DeviceDataManagerX11::IsCMTGestureEvent(
 407     const base::NativeEvent& native_event) const {
 408   return (IsScrollEvent(native_event) ||
 409           IsFlingEvent(native_event) ||
 410           IsCMTMetricsEvent(native_event));
 411 }
 412
 413 bool DeviceDataManagerX11::HasEventData(
 414     const XIDeviceEvent* xiev, const DataType type) const {
 415   const int idx = valuator_lookup_[xiev->sourceid][type];
 416   return (idx >= 0) && XIMaskIsSet(xiev->valuators.mask, idx);
 417 }
 418
 419 bool DeviceDataManagerX11::IsScrollEvent(
 420     const base::NativeEvent& native_event) const {
 421   if (!IsCMTDeviceEvent(native_event))
 422     return false;
 423
 424   XIDeviceEvent* xiev =
 425       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 426   return (HasEventData(xiev, DT_CMT_SCROLL_X) ||
 427           HasEventData(xiev, DT_CMT_SCROLL_Y));
 428 }
 429
 430 bool DeviceDataManagerX11::IsFlingEvent(
 431     const base::NativeEvent& native_event) const {
 432   if (!IsCMTDeviceEvent(native_event))
 433     return false;
 434
 435   XIDeviceEvent* xiev =
 436       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 437   return (HasEventData(xiev, DT_CMT_FLING_X) &&
 438           HasEventData(xiev, DT_CMT_FLING_Y) &&
 439           HasEventData(xiev, DT_CMT_FLING_STATE));
 440 }
 441
 442 bool DeviceDataManagerX11::IsCMTMetricsEvent(
 443     const base::NativeEvent& native_event) const {
 444   if (!IsCMTDeviceEvent(native_event))
 445     return false;
 446
 447   XIDeviceEvent* xiev =
 448       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 449   return (HasEventData(xiev, DT_CMT_METRICS_TYPE) &&
 450           HasEventData(xiev, DT_CMT_METRICS_DATA1) &&
 451           HasEventData(xiev, DT_CMT_METRICS_DATA2));
 452 }
 453
 454 bool DeviceDataManagerX11::HasGestureTimes(
 455     const base::NativeEvent& native_event) const {
 456   if (!IsCMTDeviceEvent(native_event))
 457     return false;
 458
 459   XIDeviceEvent* xiev =
 460       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 461   return (HasEventData(xiev, DT_CMT_START_TIME) &&
 462           HasEventData(xiev, DT_CMT_END_TIME));
 463 }
 464
 465 void DeviceDataManagerX11::GetScrollOffsets(
 466     const base::NativeEvent& native_event,
 467     float* x_offset,
 468     float* y_offset,
 469     float* x_offset_ordinal,
 470     float* y_offset_ordinal,
 471     int* finger_count) {
 472   *x_offset = 0;
 473   *y_offset = 0;
 474   *x_offset_ordinal = 0;
 475   *y_offset_ordinal = 0;
 476   *finger_count = 2;
 477
 478   EventData data;
 479   GetEventRawData(*native_event, &data);
 480
 481   if (data.find(DT_CMT_SCROLL_X) != data.end())
 482     *x_offset = data[DT_CMT_SCROLL_X];
 483   if (data.find(DT_CMT_SCROLL_Y) != data.end())
 484     *y_offset = data[DT_CMT_SCROLL_Y];
 485   if (data.find(DT_CMT_ORDINAL_X) != data.end())
 486     *x_offset_ordinal = data[DT_CMT_ORDINAL_X];
 487   if (data.find(DT_CMT_ORDINAL_Y) != data.end())
 488     *y_offset_ordinal = data[DT_CMT_ORDINAL_Y];
 489   if (data.find(DT_CMT_FINGER_COUNT) != data.end())
 490     *finger_count = static_cast<int>(data[DT_CMT_FINGER_COUNT]);
 491 }
 492
 493 void DeviceDataManagerX11::GetFlingData(
 494     const base::NativeEvent& native_event,
 495     float* vx,
 496     float* vy,
 497     float* vx_ordinal,
 498     float* vy_ordinal,
 499     bool* is_cancel) {
 500   *vx = 0;
 501   *vy = 0;
 502   *vx_ordinal = 0;
 503   *vy_ordinal = 0;
 504   *is_cancel = false;
 505
 506   EventData data;
 507   GetEventRawData(*native_event, &data);
 508
 509   if (data.find(DT_CMT_FLING_X) != data.end())
 510     *vx = data[DT_CMT_FLING_X];
 511   if (data.find(DT_CMT_FLING_Y) != data.end())
 512     *vy = data[DT_CMT_FLING_Y];
 513   if (data.find(DT_CMT_FLING_STATE) != data.end())
 514     *is_cancel = !!static_cast<unsigned int>(data[DT_CMT_FLING_STATE]);
 515   if (data.find(DT_CMT_ORDINAL_X) != data.end())
 516     *vx_ordinal = data[DT_CMT_ORDINAL_X];
 517   if (data.find(DT_CMT_ORDINAL_Y) != data.end())
 518     *vy_ordinal = data[DT_CMT_ORDINAL_Y];
 519 }
 520
 521 void DeviceDataManagerX11::GetMetricsData(
 522     const base::NativeEvent& native_event,
 523     GestureMetricsType* type,
 524     float* data1,
 525     float* data2) {
 526   *type = kGestureMetricsTypeUnknown;
 527   *data1 = 0;
 528   *data2 = 0;
 529
 530   EventData data;
 531   GetEventRawData(*native_event, &data);
 532
 533   if (data.find(DT_CMT_METRICS_TYPE) != data.end()) {
 534     int val = static_cast<int>(data[DT_CMT_METRICS_TYPE]);
 535     if (val == 0)
 536       *type = kGestureMetricsTypeNoisyGround;
 537     else
 538       *type = kGestureMetricsTypeUnknown;
 539   }
 540   if (data.find(DT_CMT_METRICS_DATA1) != data.end())
 541     *data1 = data[DT_CMT_METRICS_DATA1];
 542   if (data.find(DT_CMT_METRICS_DATA2) != data.end())
 543     *data2 = data[DT_CMT_METRICS_DATA2];
 544 }
 545
 546 int DeviceDataManagerX11::GetMappedButton(int button) {
 547   return button > 0 && button <= button_map_count_ ? button_map_[button - 1] :
 548                                                      button;
 549 }
 550
 551 void DeviceDataManagerX11::UpdateButtonMap() {
 552   button_map_count_ = XGetPointerMapping(gfx::GetXDisplay(),
 553                                          button_map_,
 554                                          arraysize(button_map_));
 555 }
 556
 557 void DeviceDataManagerX11::GetGestureTimes(
 558     const base::NativeEvent& native_event,
 559     double* start_time,
 560     double* end_time) {
 561   *start_time = 0;
 562   *end_time = 0;
 563
 564   EventData data;
 565   GetEventRawData(*native_event, &data);
 566
 567   if (data.find(DT_CMT_START_TIME) != data.end())
 568     *start_time = data[DT_CMT_START_TIME];
 569   if (data.find(DT_CMT_END_TIME) != data.end())
 570     *end_time = data[DT_CMT_END_TIME];
 571 }
 572
 573 bool DeviceDataManagerX11::NormalizeData(unsigned int deviceid,
 574                                          const DataType type,
 575                                          double* value) {
 576   double max_value;
 577   double min_value;
 578   if (GetDataRange(deviceid, type, &min_value, &max_value)) {
 579     *value = (*value - min_value) / (max_value - min_value);
 580     DCHECK(*value >= 0.0 && *value <= 1.0);
 581     return true;
 582   }
 583   return false;
 584 }
 585
 586 bool DeviceDataManagerX11::GetDataRange(unsigned int deviceid,
 587                                         const DataType type,
 588                                         double* min,
 589                                         double* max) {
 590   if (deviceid >= static_cast<unsigned int>(kMaxDeviceNum))
 591     return false;
 592   if (valuator_lookup_[deviceid][type] >= 0) {
 593     *min = valuator_min_[deviceid][type];
 594     *max = valuator_max_[deviceid][type];
 595     return true;
 596   }
 597   return false;
 598 }
 599
 600 void DeviceDataManagerX11::SetDeviceListForTest(
 601     const std::vector<unsigned int>& touchscreen,
 602     const std::vector<unsigned int>& cmt_devices) {
 603   for (int i = 0; i < kMaxDeviceNum; ++i) {
 604     valuator_count_[i] = 0;
 605     valuator_lookup_[i].clear();
 606     data_type_lookup_[i].clear();
 607     valuator_min_[i].clear();
 608     valuator_max_[i].clear();
 609     for (int j = 0; j < kMaxSlotNum; j++)
 610       last_seen_valuator_[i][j].clear();
 611   }
 612
 613   for (size_t i = 0; i < touchscreen.size(); i++) {
 614     unsigned int deviceid = touchscreen[i];
 615     InitializeValuatorsForTest(deviceid, kTouchDataTypeStart, kTouchDataTypeEnd,
 616                                0, 1000);
 617   }
 618
 619   cmt_devices_.reset();
 620   for (size_t i = 0; i < cmt_devices.size(); ++i) {
 621     unsigned int deviceid = cmt_devices[i];
 622     cmt_devices_[deviceid] = true;
 623     touchpads_[deviceid] = true;
 624     InitializeValuatorsForTest(deviceid, kCMTDataTypeStart, kCMTDataTypeEnd,
 625                                -1000, 1000);
 626   }
 627 }
 628
 629 void DeviceDataManagerX11::SetValuatorDataForTest(XIDeviceEvent* xievent,
 630                                                   DataType type,
 631                                                   double value) {
 632   int index = valuator_lookup_[xievent->deviceid][type];
 633   CHECK(!XIMaskIsSet(xievent->valuators.mask, index));
 634   CHECK(index >= 0 && index < valuator_count_[xievent->deviceid]);
 635   XISetMask(xievent->valuators.mask, index);
 636
 637   double* valuators = xievent->valuators.values;
 638   for (int i = 0; i < index; ++i) {
 639     if (XIMaskIsSet(xievent->valuators.mask, i))
 640       valuators++;
 641   }
 642   for (int i = DT_LAST_ENTRY - 1; i > valuators - xievent->valuators.values;
 643        --i)
 644     xievent->valuators.values[i] = xievent->valuators.values[i - 1];
 645   *valuators = value;
 646 }
 647
 648 void DeviceDataManagerX11::InitializeValuatorsForTest(int deviceid,
 649                                                       int start_valuator,
 650                                                       int end_valuator,
 651                                                       double min_value,
 652                                                       double max_value) {
 653   valuator_lookup_[deviceid].resize(DT_LAST_ENTRY, -1);
 654   data_type_lookup_[deviceid].resize(DT_LAST_ENTRY, DT_LAST_ENTRY);
 655   valuator_min_[deviceid].resize(DT_LAST_ENTRY, 0);
 656   valuator_max_[deviceid].resize(DT_LAST_ENTRY, 0);
 657   for (int j = 0; j < kMaxSlotNum; j++)
 658     last_seen_valuator_[deviceid][j].resize(DT_LAST_ENTRY, 0);
 659   for (int j = start_valuator; j <= end_valuator; ++j) {
 660     valuator_lookup_[deviceid][j] = valuator_count_[deviceid];
 661     data_type_lookup_[deviceid][valuator_count_[deviceid]] = j;
 662     valuator_min_[deviceid][j] = min_value;
 663     valuator_max_[deviceid][j] = max_value;
 664     valuator_count_[deviceid]++;
 665   }
 666 }
 667
 668 bool DeviceDataManagerX11::TouchEventNeedsCalibrate(
 669     unsigned int touch_device_id) const {
 670 #if defined(OS_CHROMEOS)
 671   if (!base::SysInfo::IsRunningOnChromeOS())
 672     return false;
 673
 674   const std::vector<TouchscreenDevice>& touch_devices =
 675       ui::DeviceDataManager::GetInstance()->touchscreen_devices();
 676   std::vector<TouchscreenDevice>::const_iterator it =
 677       std::find_if(touch_devices.begin(), touch_devices.end(),
 678                    std::bind2nd(std::ptr_fun(&DeviceHasId), touch_device_id));
 679   return it != touch_devices.end() && it->type == INPUT_DEVICE_INTERNAL;
 680 #endif  // defined(OS_CHROMEOS)
 681   return false;
 682 }
 683
 684 void DeviceDataManagerX11::SetDisabledKeyboardAllowedKeys(
 685     scoped_ptr<std::set<KeyboardCode> > excepted_keys) {
 686   DCHECK(!excepted_keys.get() ||
 687          !blocked_keyboard_allowed_keys_.get());
 688   blocked_keyboard_allowed_keys_ = excepted_keys.Pass();
 689 }
 690
 691 void DeviceDataManagerX11::DisableDevice(unsigned int deviceid) {
 692   blocked_devices_.set(deviceid, true);
 693   // TODO(rsadam@): Support blocking touchscreen devices.
 694   std::vector<KeyboardDevice> keyboards = keyboard_devices();
 695   std::vector<KeyboardDevice>::iterator it =
 696       std::find_if(keyboards.begin(),
 697                    keyboards.end(),
 698                    std::bind2nd(std::ptr_fun(&DeviceHasId), deviceid));
 699   if (it != std::end(keyboards)) {
 700     blocked_keyboards_.insert(
 701         std::pair<unsigned int, KeyboardDevice>(deviceid, *it));
 702     keyboards.erase(it);
 703     DeviceDataManager::OnKeyboardDevicesUpdated(keyboards);
 704   }
 705 }
 706
 707 void DeviceDataManagerX11::EnableDevice(unsigned int deviceid) {
 708   blocked_devices_.set(deviceid, false);
 709   std::map<unsigned int, KeyboardDevice>::iterator it =
 710       blocked_keyboards_.find(deviceid);
 711   if (it != blocked_keyboards_.end()) {
 712     std::vector<KeyboardDevice> devices = keyboard_devices();
 713     // Add device to current list of active devices.
 714     devices.push_back((*it).second);
 715     blocked_keyboards_.erase(it);
 716     DeviceDataManager::OnKeyboardDevicesUpdated(devices);
 717   }
 718 }
 719
 720 bool DeviceDataManagerX11::IsEventBlocked(
 721     const base::NativeEvent& native_event) {
 722   // Only check XI2 events which have a source device id.
 723   if (native_event->type != GenericEvent)
 724     return false;
 725
 726   XIDeviceEvent* xievent =
 727       static_cast<XIDeviceEvent*>(native_event->xcookie.data);
 728   // Allow any key events from blocked_keyboard_allowed_keys_.
 729   if (blocked_keyboard_allowed_keys_ &&
 730       (xievent->evtype == XI_KeyPress || xievent->evtype == XI_KeyRelease) &&
 731       blocked_keyboard_allowed_keys_->find(
 732           KeyboardCodeFromXKeyEvent(native_event)) !=
 733           blocked_keyboard_allowed_keys_->end()) {
 734     return false;
 735   }
 736
 737   return blocked_devices_.test(xievent->sourceid);
 738 }
 739
 740 void DeviceDataManagerX11::OnKeyboardDevicesUpdated(
 741     const std::vector<KeyboardDevice>& devices) {
 742   std::vector<KeyboardDevice> keyboards(devices);
 743   for (std::map<unsigned int, KeyboardDevice>::iterator blocked_iter =
 744            blocked_keyboards_.begin();
 745        blocked_iter != blocked_keyboards_.end();) {
 746     // Check if the blocked device still exists in list of devices.
 747     std::vector<KeyboardDevice>::iterator it = std::find_if(
 748         keyboards.begin(), keyboards.end(),
 749         std::bind2nd(std::ptr_fun(&DeviceHasId), (*blocked_iter).first));
 750     // If the device no longer exists, unblock it, else filter it out from our
 751     // active list.
 752     if (it == keyboards.end()) {
 753       blocked_devices_.set((*blocked_iter).first, false);
 754       blocked_keyboards_.erase(blocked_iter++);
 755     } else {
 756       keyboards.erase(it);
 757       ++blocked_iter;
 758     }
 759   }
 760   // Notify base class of updated list.
 761   DeviceDataManager::OnKeyboardDevicesUpdated(keyboards);
 762 }
 763
 764 }  // namespace ui