Set the correct pressure for pointer events based on force

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 <stddef.h>
 #include <stdint.h>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
@@ skipping 607 matching lines @@
 }
 
 TEST(EventTest, PointerEventDetailsTouch) {
   ui::TouchEvent touch_event_plain(ET_TOUCH_PRESSED, gfx::Point(0, 0), 0,
                                    ui::EventTimeForNow());
 
   EXPECT_EQ(EventPointerType::POINTER_TYPE_TOUCH,
             touch_event_plain.pointer_details().pointer_type());
   EXPECT_EQ(0.0f, touch_event_plain.pointer_details().radius_x());
   EXPECT_EQ(0.0f, touch_event_plain.pointer_details().radius_y());
-  EXPECT_EQ(0.0f, touch_event_plain.pointer_details().force());
+  EXPECT_TRUE(isnan(touch_event_plain.pointer_details().force()));
   EXPECT_EQ(0.0f, touch_event_plain.pointer_details().tilt_x());
   EXPECT_EQ(0.0f, touch_event_plain.pointer_details().tilt_y());
 
   ui::TouchEvent touch_event_with_details(ET_TOUCH_PRESSED, gfx::Point(0, 0), 0,
                                           0, ui::EventTimeForNow(), 10.0f, 5.0f,
                                           0.0f, 15.0f);
 
   EXPECT_EQ(EventPointerType::POINTER_TYPE_TOUCH,
             touch_event_with_details.pointer_details().pointer_type());
   EXPECT_EQ(10.0f, touch_event_with_details.pointer_details().radius_x());
@@ skipping 13 matching lines @@
 }
 
 TEST(EventTest, PointerEventDetailsMouse) {
   ui::MouseEvent mouse_event(ET_MOUSE_PRESSED, gfx::Point(0, 0),
                              gfx::Point(0, 0), ui::EventTimeForNow(), 0, 0);
 
   EXPECT_EQ(EventPointerType::POINTER_TYPE_MOUSE,
             mouse_event.pointer_details().pointer_type());
   EXPECT_EQ(0.0f, mouse_event.pointer_details().radius_x());
   EXPECT_EQ(0.0f, mouse_event.pointer_details().radius_y());
-  EXPECT_EQ(0.0f, mouse_event.pointer_details().force());
+  EXPECT_TRUE(isnan(mouse_event.pointer_details().force()));
   EXPECT_EQ(0.0f, mouse_event.pointer_details().tilt_x());
   EXPECT_EQ(0.0f, mouse_event.pointer_details().tilt_y());
 
   ui::MouseEvent mouse_event_copy(mouse_event);
   EXPECT_EQ(EventPointerType::POINTER_TYPE_MOUSE,
             mouse_event_copy.pointer_details().pointer_type());
   EXPECT_EQ(0.0f, mouse_event_copy.pointer_details().radius_x());
   EXPECT_EQ(0.0f, mouse_event_copy.pointer_details().radius_y());
-  EXPECT_EQ(0.0f, mouse_event_copy.pointer_details().force());
+  EXPECT_TRUE(isnan(mouse_event_copy.pointer_details().force()));
   EXPECT_EQ(0.0f, mouse_event_copy.pointer_details().tilt_x());
   EXPECT_EQ(0.0f, mouse_event_copy.pointer_details().tilt_y());
 }
 
 TEST(EventTest, PointerEventDetailsStylus) {
   ui::MouseEvent stylus_event(ET_MOUSE_PRESSED, gfx::Point(0, 0),
                               gfx::Point(0, 0), ui::EventTimeForNow(), 0, 0);
   ui::PointerDetails pointer_details(EventPointerType::POINTER_TYPE_PEN,
       /* radius_x */ 0.0f,
       /* radius_y */ 0.0f,
@@ skipping 14 matching lines @@
   EXPECT_EQ(EventPointerType::POINTER_TYPE_PEN,
             stylus_event_copy.pointer_details().pointer_type());
   EXPECT_EQ(21.0f, stylus_event_copy.pointer_details().force());
   EXPECT_EQ(45.0f, stylus_event_copy.pointer_details().tilt_x());
   EXPECT_EQ(-45.0f, stylus_event_copy.pointer_details().tilt_y());
   EXPECT_EQ(0.0f, stylus_event_copy.pointer_details().radius_x());
   EXPECT_EQ(0.0f, stylus_event_copy.pointer_details().radius_y());
 }
 
 }  // namespace ui