Wiring metro mouse events to aura viewer

content/browser/renderer_host/web_input_event_aura.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/web_input_event_aura.h"
 
 #include "ui/aura/window.h"
 #include "ui/base/events/event.h"
 
 namespace content {
 
 #if defined(OS_WIN)
 WebKit::WebMouseEvent MakeUntranslatedWebMouseEventFromNativeEvent(
     base::NativeEvent native_event);
 WebKit::WebMouseWheelEvent MakeUntranslatedWebMouseWheelEventFromNativeEvent(
     base::NativeEvent native_event);
 WebKit::WebKeyboardEvent MakeWebKeyboardEventFromNativeEvent(
     base::NativeEvent native_event);
 WebKit::WebGestureEvent MakeWebGestureEventFromNativeEvent(
     base::NativeEvent native_event);
 WebKit::WebTouchPoint* UpdateWebTouchEventFromNativeEvent(
     base::NativeEvent native_event, WebKit::WebTouchEvent* web_event);
 #else
-WebKit::WebMouseEvent MakeWebMouseEventFromAuraEvent(ui::MouseEvent* event);
 WebKit::WebMouseWheelEvent MakeWebMouseWheelEventFromAuraEvent(
     ui::MouseWheelEvent* event);
 WebKit::WebMouseWheelEvent MakeWebMouseWheelEventFromAuraEvent(
     ui::ScrollEvent* event);
 WebKit::WebKeyboardEvent MakeWebKeyboardEventFromAuraEvent(
     ui::KeyEvent* event);
 WebKit::WebGestureEvent MakeWebGestureEventFromAuraEvent(
     ui::GestureEvent* event);
 WebKit::WebGestureEvent MakeWebGestureEventFromAuraEvent(
     ui::ScrollEvent* event);
 WebKit::WebTouchPoint* UpdateWebTouchEventFromAuraEvent(
     ui::TouchEvent* event, WebKit::WebTouchEvent* web_event);
 #endif
 
+WebKit::WebMouseEvent MakeWebMouseEventFromAuraEvent(ui::MouseEvent* event);
+
 // General approach:
 //
 // ui::Event only carries a subset of possible event data provided to Aura by
 // the host platform. WebKit utilizes a larger subset of that information than
 // Aura itself. WebKit includes some built in cracking functionality that we
 // rely on to obtain this information cleanly and consistently.
 //
 // The only place where an ui::Event's data differs from what the underlying
 // base::NativeEvent would provide is position data, since we would like to
 // provide coordinates relative to the aura::Window that is hosting the
 // renderer, not the top level platform window.
 //
 // The approach is to fully construct a WebKit::WebInputEvent from the
 // ui::Event's base::NativeEvent, and then replace the coordinate fields with
 // the translated values from the ui::Event.
 //
 // The exception is mouse events on linux. The ui::MouseEvent contains enough
 // necessary information to construct a WebMouseEvent. So instead of extracting
 // the information from the XEvent, which can be tricky when supporting both
 // XInput2 and XInput, the WebMouseEvent is constructed from the
 // ui::MouseEvent. This will not be necessary once only XInput2 is supported.
 //
 
 WebKit::WebMouseEvent MakeWebMouseEvent(ui::MouseEvent* event) {
-#if defined(OS_WIN)
   // Construct an untranslated event from the platform event data.
   WebKit::WebMouseEvent webkit_event =
-      MakeUntranslatedWebMouseEventFromNativeEvent(event->native_event());
+#if defined(OS_WIN)
+  // On Windows we have WM_ events comming from desktop and pure aura
+  // events comming from metro mode.
+  event->native_event().message ?
+      MakeUntranslatedWebMouseEventFromNativeEvent(event->native_event()) :
+      MakeWebMouseEventFromAuraEvent(event);
 #else
-  WebKit::WebMouseEvent webkit_event = MakeWebMouseEventFromAuraEvent(event);
+  MakeWebMouseEventFromAuraEvent(event);
 #endif
-
   // Replace the event's coordinate fields with translated position data from
   // |event|.
   webkit_event.windowX = webkit_event.x = event->x();
   webkit_event.windowY = webkit_event.y = event->y();
 
   const gfx::Point root_point = event->root_location();
   webkit_event.globalX = root_point.x();
   webkit_event.globalY = root_point.y();
 
   return webkit_event;
@@ skipping 105 matching lines @@
 
 WebKit::WebTouchPoint* UpdateWebTouchEvent(ui::TouchEvent* event,
                                            WebKit::WebTouchEvent* web_event) {
 #if defined(OS_WIN)
   return UpdateWebTouchEventFromNativeEvent(event->native_event(), web_event);
 #else
   return UpdateWebTouchEventFromAuraEvent(event, web_event);
 #endif
 }
 
+int EventFlagsToWebEventModifiers(int flags) {
+  int modifiers = 0;
+  if (flags & ui::EF_SHIFT_DOWN)
+    modifiers |= WebKit::WebInputEvent::ShiftKey;
+  if (flags & ui::EF_CONTROL_DOWN)
+    modifiers |= WebKit::WebInputEvent::ControlKey;
+  if (flags & ui::EF_ALT_DOWN)
+    modifiers |= WebKit::WebInputEvent::AltKey;
+  // TODO(beng): MetaKey/META_MASK
+  if (flags & ui::EF_LEFT_MOUSE_BUTTON)
+    modifiers |= WebKit::WebInputEvent::LeftButtonDown;
+  if (flags & ui::EF_MIDDLE_MOUSE_BUTTON)
+    modifiers |= WebKit::WebInputEvent::MiddleButtonDown;
+  if (flags & ui::EF_RIGHT_MOUSE_BUTTON)
+    modifiers |= WebKit::WebInputEvent::RightButtonDown;
+  if (flags & ui::EF_CAPS_LOCK_DOWN)
+    modifiers |= WebKit::WebInputEvent::CapsLockOn;
+  return modifiers;
+}
+
+WebKit::WebMouseEvent MakeWebMouseEventFromAuraEvent(ui::MouseEvent* event) {
+  WebKit::WebMouseEvent webkit_event;
+
+  webkit_event.modifiers = EventFlagsToWebEventModifiers(event->flags());
+  webkit_event.timeStampSeconds = event->time_stamp().InSecondsF();
+
+  webkit_event.button = WebKit::WebMouseEvent::ButtonNone;
+  if (event->flags() & ui::EF_LEFT_MOUSE_BUTTON)
+    webkit_event.button = WebKit::WebMouseEvent::ButtonLeft;
+  if (event->flags() & ui::EF_MIDDLE_MOUSE_BUTTON)
+    webkit_event.button = WebKit::WebMouseEvent::ButtonMiddle;
+  if (event->flags() & ui::EF_RIGHT_MOUSE_BUTTON)
+    webkit_event.button = WebKit::WebMouseEvent::ButtonRight;
+
+  switch (event->type()) {
+    case ui::ET_MOUSE_PRESSED:
+      webkit_event.type = WebKit::WebInputEvent::MouseDown;
+      webkit_event.clickCount = event->GetClickCount();
+      break;
+    case ui::ET_MOUSE_RELEASED:
+      webkit_event.type = WebKit::WebInputEvent::MouseUp;
+      break;
+    case ui::ET_MOUSE_ENTERED:
+    case ui::ET_MOUSE_EXITED:
+    case ui::ET_MOUSE_MOVED:
+    case ui::ET_MOUSE_DRAGGED:
+      webkit_event.type = WebKit::WebInputEvent::MouseMove;
+      break;
+    default:
+      NOTIMPLEMENTED() << "Received unexpected event: " << event->type();
+      break;
+  }
+
+  return webkit_event;
+}
+
 }  // namespace content