Event handling support for ozone.

ui/base/ozone/key_event_converter_ozone.cc

Index: ui/base/ozone/key_event_converter_ozone.cc
diff --git a/ui/base/ozone/key_event_converter_ozone.cc b/ui/base/ozone/key_event_converter_ozone.cc
new file mode 100644
index 0000000000000000000000000000000000000000..4e896768217a4784b269e110c2fa25f08b8598c8
--- /dev/null
+++ b/ui/base/ozone/key_event_converter_ozone.cc
@@ -0,0 +1,64 @@
+// Copyright (c) 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/base/ozone/key_event_converter_ozone.h"
+
+#include <linux/input.h>
+
+#include "ui/base/events/event.h"
+#include "ui/base/keycodes/keyboard_codes.h"
+
+namespace {
+
+ui::KeyboardCode KeyboardCodeFromButton(int code) {
+  switch (code) {
+    case KEY_VOLUMEDOWN:
+      return ui::VKEY_VOLUME_DOWN;
+
+    case KEY_VOLUMEUP:
+      return ui::VKEY_VOLUME_UP;
+
+    case KEY_POWER:
+      return ui::VKEY_POWER;
+  }
+
+  LOG(ERROR) << "Unknown key code: " << code;
+  return static_cast<ui::KeyboardCode>(0);
+}
+
+}  // namespace
+
+namespace ui {
+
+// TODO(rjkroege): Stop leaking file descriptor.
+KeyEventConverterOzone::KeyEventConverterOzone() {}
+KeyEventConverterOzone::~KeyEventConverterOzone() {}
+
+void KeyEventConverterOzone::OnFileCanReadWithoutBlocking(int fd) {
+  input_event inputs[4];
+  ssize_t read_size = read(fd, inputs, sizeof(inputs));
+  if (read_size <= 0)
+    return;
+
+  CHECK_EQ(read_size % sizeof(*inputs), 0u);
+  for (unsigned i = 0; i < read_size / sizeof(*inputs); ++i) {
+    const input_event& input = inputs[i];
+    if (input.type == EV_KEY) {
+      KeyEvent* key =
+          new KeyEvent(input.value == 1 ? ET_KEY_PRESSED : ET_KEY_RELEASED,
+                       KeyboardCodeFromButton(input.code),
+                       0,
+                       true);
+      DispatchEvent(key);
+    } else if (input.type == EV_SYN) {
+      // TODO(sadrul): Handle this case appropriately.
+    }
+  }
+}
+
+void KeyEventConverterOzone::OnFileCanWriteWithoutBlocking(int fd) {
+  NOTREACHED();
+}
+
+}  // namespace ui