Re-land "Issue 191223007: Move touch CTM from X into Chrome"

ui/events/x/device_data_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/events/x/device_data_manager.h"
 
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/Xlib.h>
 
 #include "base/logging.h"
 #include "base/memory/singleton.h"
+#include "base/sys_info.h"
 #include "ui/events/event_constants.h"
+#include "ui/events/event_switches.h"
 #include "ui/events/x/device_list_cache_x.h"
 #include "ui/events/x/touch_factory_x11.h"
+#include "ui/gfx/display.h"
+#include "ui/gfx/point3_f.h"
 #include "ui/gfx/x/x11_types.h"
 
 // XIScrollClass was introduced in XI 2.1 so we need to define it here
 // for backward-compatibility with older versions of XInput.
 #if !defined(XIScrollClass)
 #define XIScrollClass 3
 #endif
 
 // Multi-touch support was introduced in XI 2.2. Add XI event types here
 // for backward-compatibility with older versions of XInput.
@@ skipping 87 matching lines @@
     : xi_opcode_(-1),
       atom_cache_(gfx::GetXDisplay(), kCachedAtoms),
       button_map_count_(0) {
   CHECK(gfx::GetXDisplay());
   InitializeXInputInternal();
 
   // Make sure the sizes of enum and kCachedAtoms are aligned.
   CHECK(arraysize(kCachedAtoms) == static_cast<size_t>(DT_LAST_ENTRY) + 1);
   UpdateDeviceList(gfx::GetXDisplay());
   UpdateButtonMap();
+  for (int i = 0; i < kMaxDeviceNum; i++)
+    touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
 }
 
 DeviceDataManager::~DeviceDataManager() {
 }
 
 bool DeviceDataManager::InitializeXInputInternal() {
   // Check if XInput is available on the system.
   xi_opcode_ = -1;
   int opcode, event, error;
   if (!XQueryExtension(
@@ skipping 494 matching lines @@
     last_seen_valuator_[deviceid][j].resize(DT_LAST_ENTRY, 0);
   for (int j = start_valuator; j <= end_valuator; ++j) {
     valuator_lookup_[deviceid][j] = valuator_count_[deviceid];
     data_type_lookup_[deviceid][valuator_count_[deviceid]] = j;
     valuator_min_[deviceid][j] = min_value;
     valuator_max_[deviceid][j] = max_value;
     valuator_count_[deviceid]++;
   }
 }
 
+bool DeviceDataManager::TouchEventNeedsCalibrate(int touch_device_id) const {
+#if defined(OS_CHROMEOS) && defined(USE_XI2_MT)
+  int64 touch_display_id = GetDisplayForTouchDevice(touch_device_id);
+  if (base::SysInfo::IsRunningOnChromeOS() &&
+      touch_display_id == gfx::Display::InternalDisplayId()) {
+    return true;
+  }
+#endif  // defined(OS_CHROMEOS) && defined(USE_XI2_MT)
+  return false;
+}
+
+void DeviceDataManager::ClearTouchTransformerRecord() {
+  for (int i = 0; i < kMaxDeviceNum; i++) {
+    touch_device_transformer_map_[i] = gfx::Transform();
+    touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
+  }
+}
+
+bool DeviceDataManager::IsTouchDeviceIdValid(int touch_device_id) const {
+  return (touch_device_id > 0 && touch_device_id < kMaxDeviceNum);
+}
+
+void DeviceDataManager::UpdateTouchInfoForDisplay(
+    int64 display_id,
+    int touch_device_id,
+    const gfx::Transform& touch_transformer) {
+  if (IsTouchDeviceIdValid(touch_device_id)) {
+    touch_device_to_display_map_[touch_device_id] = display_id;
+    touch_device_transformer_map_[touch_device_id] = touch_transformer;
+  }
+}
+
+void DeviceDataManager::ApplyTouchTransformer(int touch_device_id,
+                                              float* x, float* y) {
+  if (IsTouchDeviceIdValid(touch_device_id)) {
+    gfx::Point3F point(*x, *y, 0.0);
+    const gfx::Transform& trans =
+        touch_device_transformer_map_[touch_device_id];
+    trans.TransformPoint(&point);
+    *x = point.x();
+    *y = point.y();
+  }
+}
+
+int64 DeviceDataManager::GetDisplayForTouchDevice(int touch_device_id) const {
+  if (IsTouchDeviceIdValid(touch_device_id))
+    return touch_device_to_display_map_[touch_device_id];
+  return gfx::Display::kInvalidDisplayID;
+}
+
 }  // namespace ui