Move touchscreen_util.cc/h from ash to ui.

ui/display/chromeos/touchscreen_util.cc

 // Copyright 2014 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 "ash/touch/touchscreen_util.h"
+#include "ui/display/chromeos/touchscreen_util.h"
 
 #include <set>
 
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "ui/events/devices/input_device.h"
 
-namespace ash {
+namespace display {
 
 namespace {
 
-using DisplayInfoList = std::vector<display::ManagedDisplayInfo*>;
+using DisplayInfoList = std::vector<ManagedDisplayInfo*>;
 using DeviceList = std::vector<const ui::TouchscreenDevice*>;
 
 // Helper method to associate |display| and |device|.
-void Associate(display::ManagedDisplayInfo* display,
+void Associate(ManagedDisplayInfo* display,
                const ui::TouchscreenDevice* device) {
   display->AddInputDevice(device->id);
-  display->set_touch_support(display::Display::TOUCH_SUPPORT_AVAILABLE);
+  display->set_touch_support(Display::TOUCH_SUPPORT_AVAILABLE);
 }
 
 // Returns true if |path| is likely a USB device.
 bool IsDeviceConnectedViaUsb(const base::FilePath& path) {
   std::vector<base::FilePath::StringType> components;
   path.GetComponents(&components);
 
   for (const auto& component : components) {
     if (base::StartsWith(component, "usb",
                          base::CompareCase::INSENSITIVE_ASCII))
       return true;
   }
 
   return false;
 }
 
 // Returns the UDL association score between |display| and |device|. A score <=
 // 0 means that there is no association.
-int GetUdlAssociationScore(const display::ManagedDisplayInfo* display,
+int GetUdlAssociationScore(const ManagedDisplayInfo* display,
                            const ui::TouchscreenDevice* device) {
   // If the devices are not both connected via USB, then there cannot be a UDL
   // association score.
   if (!IsDeviceConnectedViaUsb(display->sys_path()) ||
       !IsDeviceConnectedViaUsb(device->sys_path))
     return 0;
 
   // The association score is simply the number of prefix path components that
   // sysfs paths have in common.
   std::vector<base::FilePath::StringType> display_components;
   std::vector<base::FilePath::StringType> device_components;
   display->sys_path().GetComponents(&display_components);
   device->sys_path.GetComponents(&device_components);
 
   std::size_t largest_idx = 0;
   while (largest_idx < display_components.size() &&
          largest_idx < device_components.size() &&
          display_components[largest_idx] == device_components[largest_idx]) {
     ++largest_idx;
   }
   return largest_idx;
 }
 
 // Tries to find a UDL device that best matches |display|. Returns nullptr
 // if one is not found.
 const ui::TouchscreenDevice* GuessBestUdlDevice(
-    const display::ManagedDisplayInfo* display,
+    const ManagedDisplayInfo* display,
     const DeviceList& devices) {
   int best_score = 0;
   const ui::TouchscreenDevice* best_device = nullptr;
 
   for (const ui::TouchscreenDevice* device : devices) {
     int score = GetUdlAssociationScore(display, device);
     if (score > best_score) {
       best_score = score;
       best_device = device;
     }
   }
 
   return best_device;
 }
 
 void AssociateUdlDevices(DisplayInfoList* displays, DeviceList* devices) {
   VLOG(2) << "Trying to match udl devices (" << displays->size()
           << " displays and " << devices->size() << " devices to match)";
 
   DisplayInfoList::iterator display_it = displays->begin();
   while (display_it != displays->end()) {
-    display::ManagedDisplayInfo* display = *display_it;
+    ManagedDisplayInfo* display = *display_it;
     const ui::TouchscreenDevice* device = GuessBestUdlDevice(display, *devices);
 
     if (device) {
       VLOG(2) << "=> Matched device " << device->name << " to display "
               << display->name()
               << " (score=" << GetUdlAssociationScore(display, device) << ")";
       Associate(display, device);
 
       display_it = displays->erase(display_it);
       devices->erase(std::find(devices->begin(), devices->end(), device));
 
       continue;
     }
 
     ++display_it;
   }
 }
 
 // Returns true if |display| is internal.
-bool IsInternalDisplay(const display::ManagedDisplayInfo* display) {
-  return display::Display::IsInternalDisplayId(display->id());
+bool IsInternalDisplay(const ManagedDisplayInfo* display) {
+  return Display::IsInternalDisplayId(display->id());
 }
 
 // Returns true if |device| is internal.
 bool IsInternalDevice(const ui::TouchscreenDevice* device) {
   return device->type == ui::InputDeviceType::INPUT_DEVICE_INTERNAL;
 }
 
 void AssociateInternalDevices(DisplayInfoList* displays, DeviceList* devices) {
   VLOG(2) << "Trying to match internal devices (" << displays->size()
           << " displays and " << devices->size() << " devices to match)";
 
   // Internal device assocation has a couple of gotchas:
   // - There can be internal devices but no internal display, or visa-versa.
   // - There can be multiple internal devices matching one internal display. We
   //   assume there is at most one internal display.
   // - All internal devices must be removed from |displays| and |devices| after
   //   this function has returned, since an internal device can never be
   //   associated with an external device.
 
   // Capture the internal display reference as we remove it from |displays|.
-  display::ManagedDisplayInfo* internal_display = nullptr;
+  ManagedDisplayInfo* internal_display = nullptr;
   DisplayInfoList::iterator display_it =
       std::find_if(displays->begin(), displays->end(), &IsInternalDisplay);
   if (display_it != displays->end()) {
     internal_display = *display_it;
     displays->erase(display_it);
   }
 
   bool matched = false;
 
   // Remove all internal devices from |devices|. If we have an internal display,
@@ skipping 24 matching lines @@
     VLOG(2) << "=> Removing internal display " << internal_display->name();
 }
 
 void AssociateSameSizeDevices(DisplayInfoList* displays, DeviceList* devices) {
   // Associate screens/displays with the same size.
   VLOG(2) << "Trying to match same-size devices (" << displays->size()
           << " displays and " << devices->size() << " devices to match)";
 
   DisplayInfoList::iterator display_it = displays->begin();
   while (display_it != displays->end()) {
-    display::ManagedDisplayInfo* display = *display_it;
+    ManagedDisplayInfo* display = *display_it;
     const gfx::Size native_size = display->GetNativeModeSize();
 
     // Try to find an input device with roughly the same size as the display.
     DeviceList::iterator device_it = std::find_if(
         devices->begin(), devices->end(),
         [&native_size](const ui::TouchscreenDevice* device) {
           // Allow 1 pixel difference between screen and touchscreen
           // resolutions. Because in some cases for monitor resolution
           // 1024x768 touchscreen's resolution would be 1024x768, but for
           // some 1023x767. It really depends on touchscreen's firmware
@@ skipping 23 matching lines @@
   // If there is only one display left, then we should associate all input
   // devices with it.
 
   VLOG(2) << "Trying to match to single display (" << displays->size()
           << " displays and " << devices->size() << " devices to match)";
 
   // We only associate to one display.
   if (displays->size() != 1 || devices->empty())
     return;
 
-  display::ManagedDisplayInfo* display = *displays->begin();
+  ManagedDisplayInfo* display = *displays->begin();
   for (const ui::TouchscreenDevice* device : *devices) {
     VLOG(2) << "=> Matched device " << device->name << " to display "
             << display->name();
     Associate(display, device);
   }
 
   displays->clear();
   devices->clear();
 }
 
 }  // namespace
 
 void AssociateTouchscreens(
-    std::vector<display::ManagedDisplayInfo>* all_displays,
+    std::vector<ManagedDisplayInfo>* all_displays,
     const std::vector<ui::TouchscreenDevice>& all_devices) {
   // |displays| and |devices| contain pointers directly to the values stored
   // inside of |all_displays| and |all_devices|. When a display or input device
   // has been associated, it is removed from the |displays| or |devices| list.
 
   // Construct our initial set of display/devices that we will process.
   DisplayInfoList displays;
-  for (display::ManagedDisplayInfo& display : *all_displays) {
+  for (ManagedDisplayInfo& display : *all_displays) {
     display.ClearInputDevices();
 
     if (display.GetNativeModeSize().IsEmpty()) {
       VLOG(2) << "Will not match display " << display.id()
               << " since it doesn't have a native mode";
       continue;
     }
     displays.push_back(&display);
   }
 
   // Construct initial set of devices.
   DeviceList devices;
   for (const ui::TouchscreenDevice& device : all_devices)
     devices.push_back(&device);
 
-  for (const display::ManagedDisplayInfo* display : displays) {
+  for (const ManagedDisplayInfo* display : displays) {
     VLOG(2) << "Received display " << display->name()
             << " (size: " << display->GetNativeModeSize().ToString()
             << ", sys_path: " << display->sys_path().LossyDisplayName() << ")";
   }
   for (const ui::TouchscreenDevice* device : devices) {
     VLOG(2) << "Received device " << device->name
             << " (size: " << device->size.ToString()
             << ", sys_path: " << device->sys_path.LossyDisplayName() << ")";
   }
 
   AssociateInternalDevices(&displays, &devices);
   AssociateUdlDevices(&displays, &devices);
   AssociateSameSizeDevices(&displays, &devices);
   AssociateToSingleDisplay(&displays, &devices);
 
-  for (const display::ManagedDisplayInfo* display : displays)
+  for (const ManagedDisplayInfo* display : displays)
     LOG(WARNING) << "Unmatched display " << display->name();
   for (const ui::TouchscreenDevice* device : devices)
     LOG(WARNING) << "Unmatched device " << device->name;
 }
 
-}  // namespace ash
+}  // namespace display