Input Injection API on Ozone

ui/events/ozone/evdev/input_injector_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 "ui/events/event.h"
+#include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
+#include "ui/events/ozone/evdev/event_modifiers_evdev.h"
+#include "ui/events/ozone/evdev/input_injector_evdev.h"
+#include "ui/events/ozone/evdev/keyboard_evdev.h"
+
+namespace ui {
+
+InputInjectorEvDev::InputInjectorEvDev(EventModifiersEvdev* modifiers,

[spang, 2014/11/25 19:58:29]

I've been spelling this "Evdev" - let's be consistent.

[kelvinp, 2014/11/25 21:16:49]

Done.

+                                       CursorDelegateEvdev* cursor,
+                                       KeyboardEvdev* keyboard,
+                                       const EventDispatchCallback& callback)
+    : modifiers_(modifiers),
+      cursor_(cursor),
+      keyboard_(keyboard),
+      callback_(callback) {
+  DCHECK(modifiers_);
+  DCHECK(cursor_);
+  DCHECK(keyboard_);
+}
+
+void InputInjectorEvDev::InjectMouseButton(EventFlags button, bool down) {
+  int changed_button = 0;
+
+  switch(button) {
+    case EF_LEFT_MOUSE_BUTTON:
+      changed_button = EVDEV_MODIFIER_LEFT_MOUSE_BUTTON;
+      break;
+    case EF_RIGHT_MOUSE_BUTTON:
+      changed_button = EVDEV_MODIFIER_RIGHT_MOUSE_BUTTON;
+      break;
+    case EF_MIDDLE_MOUSE_BUTTON:
+      changed_button = EVDEV_MODIFIER_MIDDLE_MOUSE_BUTTON;
+    default:
+      LOG(FATAL) << "Invalid flags: " << button << " for the button parameter";

[spang, 2014/11/25 19:58:29]

fatal seems a little harsh.. maybe just warn?

[kelvinp, 2014/11/25 21:16:49]

Done.

+      return;
+  }
+
+  modifiers_->UpdateModifier(changed_button, down);
+  int flags = modifiers_->GetModifierFlags() |
+              EventModifiersEvdev::GetEventFlagFromModifier(changed_button);
+
+  callback_.Run(make_scoped_ptr(new MouseEvent(
+      (down) ? ET_MOUSE_PRESSED : ET_MOUSE_RELEASED,
+      cursor_->location(),
+      cursor_->location(),
+      flags,
+      flags)));
+}
+
+void InputInjectorEvDev::InjectMouseWheel(int delta_x, int delta_y) {
+  callback_.Run(make_scoped_ptr(new MouseWheelEvent(
+      gfx::Vector2d(delta_x, delta_y),
+      cursor_->location(),
+      cursor_->location(),
+      modifiers_->GetModifierFlags(),
+      modifiers_->GetModifierFlags())));

[spang, 2014/11/25 19:58:29]

Why is changed_button_flags set to all modifiers (some of which may not even be
buttons)? I think just pass "0".

[kelvinp, 2014/11/25 21:16:49]

Done.

+}
+
+void InputInjectorEvDev::MoveCursorTo(const gfx::PointF& location) {
+  if (cursor_) {
+    cursor_->MoveCursorTo(location);
+    callback_.Run(make_scoped_ptr(new MouseEvent(
+        ET_MOUSE_MOVED,
+        cursor_->location(),
+        cursor_->location(),
+        modifiers_->GetModifierFlags(),
+        /* changed_button_flags */ 0)));
+  }
+}
+
+void InputInjectorEvDev::InjectKeyPress(DomCode physical_key, bool down) {
+  NOTIMPLEMENTED();
+}
+
+}  // namespace ui
+