mus: Fix event transformation in client code.

ui/events/event_unittest.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 "ui/events/event.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/keycodes/dom/dom_code.h"
 #include "ui/events/keycodes/dom/keycode_converter.h"
 #include "ui/events/test/events_test_utils.h"
+#include "ui/gfx/transform.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
 #include "ui/events/test/events_test_utils_x11.h"
 #include "ui/gfx/x/x11_types.h"  // nogncheck
 #endif
 
 namespace ui {
 
 TEST(EventTest, NoNativeEvent) {
@@ skipping 389 matching lines @@
 
     MSG native_event = { NULL, WM_KEYUP, VKEY_HOME, lParam };
     KeyEvent key(native_event);
 
     // KeyEvent converts from the native keycode (scan code) to the code.
     EXPECT_EQ(kCodeForHome, key.GetCodeString());
   }
 #endif  // OS_WIN
 }
 
+TEST(EventTest, LocatedEventTransform) {
+  const gfx::Point root_location(10, 20);
+  const gfx::Point location(0, 14);
+  MouseEvent mouseev(ET_MOUSE_MOVED, location, root_location,
+                     EventTimeForNow(), EF_NONE, EF_NONE);
+  gfx::Transform transform;
+  transform.Scale(0.5, 0.5);
+  mouseev.UpdateForRootTransform(transform);
+  EXPECT_EQ(gfx::Point(5, 10).ToString(),
+            mouseev.root_location().ToString());
+  EXPECT_EQ(gfx::Point(0, 7).ToString(),
+            mouseev.location().ToString());
+}
+
 namespace {
 #if defined(USE_X11)
 void SetKeyEventTimestamp(XEvent* event, long time) {
   event->xkey.time = time;
 }
 
 void AdvanceKeyEventTimestamp(XEvent* event) {
   event->xkey.time++;
 }
 
@@ skipping 438 matching lines @@
 
     EXPECT_EQ(ptr_event.type(), clone_as_ptr->type());
     EXPECT_EQ(ptr_event.pointer_id(), clone_as_ptr->pointer_id());
     EXPECT_EQ(ptr_event.pointer_details(), clone_as_ptr->pointer_details());
     EXPECT_EQ(ptr_event.location(), clone_as_ptr->location());
     EXPECT_EQ(ptr_event.root_location(), clone_as_ptr->root_location());
   }
 }
 
 }  // namespace ui