events: Make platform specific events code into ui/events/.

ui/events/x/events_x_utils.cc

+// 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/events/x/events_x_utils.h"
+
+#include <X11/keysym.h>
+#include <X11/X.h>
+#include <X11/Xlib.h>
+
+#include "base/logging.h"
+#include "ui/events/keycodes/keyboard_code_conversion_x.h"
+
+namespace {
+
+// Converts ui::EventType to XKeyEvent state.
+unsigned int XKeyEventState(int flags) {
+  return
+      ((flags & ui::EF_SHIFT_DOWN) ? ShiftMask : 0) |
+      ((flags & ui::EF_CONTROL_DOWN) ? ControlMask : 0) |
+      ((flags & ui::EF_ALT_DOWN) ? Mod1Mask : 0) |
+      ((flags & ui::EF_CAPS_LOCK_DOWN) ? LockMask : 0);
+}
+
+// Converts EventType to XKeyEvent type.
+int XKeyEventType(ui::EventType type) {
+  switch (type) {
+    case ui::ET_KEY_PRESSED:
+      return KeyPress;
+    case ui::ET_KEY_RELEASED:
+      return KeyRelease;
+    default:
+      return 0;
+  }
+}
+
+// Converts KeyboardCode to XKeyEvent keycode.
+unsigned int XKeyEventKeyCode(ui::KeyboardCode key_code,
+                              int flags,
+                              XDisplay* display) {
+  const int keysym = XKeysymForWindowsKeyCode(key_code,
+                                              flags & ui::EF_SHIFT_DOWN);
+  // Tests assume the keycode for XK_less is equal to the one of XK_comma,
+  // but XKeysymToKeycode returns 94 for XK_less while it returns 59 for
+  // XK_comma. Here we convert the value for XK_less to the value for XK_comma.
+  return (keysym == XK_less) ? 59 : XKeysymToKeycode(display, keysym);
+}
+
+}  // namespace ui
+
+namespace ui {
+
+void InitXKeyEventForTesting(EventType type,
+                             KeyboardCode key_code,
+                             int flags,
+                             XEvent* event) {
+  CHECK(event);
+  XDisplay* display = gfx::GetXDisplay();
+  XKeyEvent key_event;
+  key_event.type = XKeyEventType(type);
+  CHECK_NE(0, key_event.type);
+  key_event.serial = 0;
+  key_event.send_event = 0;
+  key_event.display = display;
+  key_event.time = 0;
+  key_event.window = 0;
+  key_event.root = 0;
+  key_event.subwindow = 0;
+  key_event.x = 0;
+  key_event.y = 0;
+  key_event.x_root = 0;
+  key_event.y_root = 0;
+  key_event.state = XKeyEventState(flags);
+  key_event.keycode = XKeyEventKeyCode(key_code, flags, display);
+  key_event.same_screen = 1;
+  event->type = key_event.type;
+  event->xkey = key_event;
+}
+
+}  // namespace ui