Move touch CTM from X into Chrome

ui/events/x/device_data_manager.cc

Index: ui/events/x/device_data_manager.cc
diff --git a/ui/events/x/device_data_manager.cc b/ui/events/x/device_data_manager.cc
index a2e02928c4bb9288353d465c4e52f619682f06b4..e14ff899f0a0e5023f8186e11cafa0e6395894a5 100644
--- a/ui/events/x/device_data_manager.cc
+++ b/ui/events/x/device_data_manager.cc
@@ -13,6 +13,7 @@
 #include "ui/events/event_constants.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/x/x11_types.h"
 
 // XIScrollClass was introduced in XI 2.1 so we need to define it here
@@ -121,6 +122,9 @@ DeviceDataManager::DeviceDataManager()
   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() {
@@ -581,6 +585,44 @@ bool DeviceDataManager::GetDataRange(unsigned int deviceid,
   return false;
 }
 
+void DeviceDataManager::ClearTouchCTM() {
+  for (int i = 0; i < kMaxDeviceNum; i++)
+    touch_device_ctm_map_[i] = TouchCTM();
+}
+
+void DeviceDataManager::SetTouchCTM(int touch_device_id,
+                                    const TouchCTM& touch_ctm) {
+  if (touch_device_id > 0 && touch_device_id < kMaxDeviceNum)
+    touch_device_ctm_map_[touch_device_id] = touch_ctm;
+}
+
+void DeviceDataManager::ApplyTouchCTM(int touch_device_id, float* x, float* y) {
+  if (touch_device_id > 0 && touch_device_id < kMaxDeviceNum) {
+    const TouchCTM ctm = touch_device_ctm_map_[touch_device_id];
+    *x = *x * ctm.x_scale + ctm.x_offset;
+    *y = *y * ctm.y_scale + ctm.y_offset;
+  }
+}
+
+
+void DeviceDataManager::ClearTouchDeviceToDisplayMap() {
+  for (int i = 0 ; i < kMaxDeviceNum; i++)
+    touch_device_to_display_map_[i] = gfx::Display::kInvalidDisplayID;
+}
+
+void DeviceDataManager::MapTouchDeviceToDisplay(int touch_device_id,
+                                                int64 display_id) {
+  if (touch_device_id > 0 && touch_device_id < kMaxDeviceNum)
+    touch_device_to_display_map_[touch_device_id] = display_id;
+}
+
+int64 DeviceDataManager::GetDisplayForTouchDevice(int touch_device_id) {
+  if (touch_device_id > 0 && touch_device_id < kMaxDeviceNum)
+    return touch_device_to_display_map_[touch_device_id];
+  else
+    return gfx::Display::kInvalidDisplayID;
+}
+
 void DeviceDataManager::SetDeviceListForTest(
     const std::vector<unsigned int>& touchscreen,
     const std::vector<unsigned int>& cmt_devices) {