Ozone support for device special cases in keyboard event rewriting.

ui/events/ozone/evdev/event_converter_evdev.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 <linux/input.h>
 
 #include "ui/events/ozone/evdev/event_converter_evdev.h"
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/events/devices/input_device.h"
 
 namespace ui {
 
+namespace {
+  // USB vendor and product strings are pragmatically limited to 126
+  // characters each, so device names more than twice that should be
+  // unusual.
+  const size_t kMaximumDeviceNameLength = 256;
+}  // anonymous namespace
+
 EventConverterEvdev::EventConverterEvdev(int fd,
                                          const base::FilePath& path,
                                          int id,
                                          InputDeviceType type)
-    : fd_(fd), path_(path), id_(id), type_(type), ignore_events_(false) {
+    : fd_(fd),
+      path_(path),
+      input_device_(id, type, std::string()),
+      ignore_events_(false) {
+  char device_name[kMaximumDeviceNameLength];
+  if (ioctl(fd, EVIOCGNAME(kMaximumDeviceNameLength - 1), &device_name) < 0) {

[spang, 2015/04/08 22:54:30]

Can you move these to EventDeviceInfo? That's where we've been putting these
ioctls in there and it makes testing easier.

[kpschoedel, 2015/04/09 18:51:41]

Done.

+    PLOG(INFO) << "Can't read device name for " << id;
+  } else {
+    input_device_.name = device_name;
+  }
+  struct input_id evdev_id;
+  if (ioctl(fd, EVIOCGID, &evdev_id) < 0) {
+    PLOG(INFO) << "Can't read device identification for " << id;
+  } else {
+    input_device_.vendor_id = evdev_id.vendor;
+    input_device_.product_id = evdev_id.product;
+  }
 }
 
 EventConverterEvdev::~EventConverterEvdev() {
   Stop();
 }
 
 void EventConverterEvdev::Start() {
   base::MessageLoopForUI::current()->WatchFileDescriptor(
       fd_, true, base::MessagePumpLibevent::WATCH_READ, &controller_, this);
 }
@@ skipping 76 matching lines @@
     Stop();
   }
 }
 
 base::TimeDelta EventConverterEvdev::TimeDeltaFromInputEvent(
     const input_event& event) {
   return base::TimeDelta::FromMicroseconds(event.time.tv_sec * 1000000 +
                                            event.time.tv_usec);
 }
 }  // namespace ui