Handle floating point coordinates from ozone to exosphere

ui/events/cocoa/events_mac_unittest.mm

 // 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.
 
 #import <Carbon/Carbon.h>
 #import <Cocoa/Cocoa.h>
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 198 matching lines @@
 // Tests mouse button presses and mouse wheel events.
 TEST_F(EventsMacTest, ButtonEvents) {
   gfx::Point location(5, 10);
   gfx::Vector2d offset;
 
   NSEvent* event =
       TestMouseEvent(kCGEventLeftMouseDown, location, kNoEventFlags);
   EXPECT_EQ(ui::ET_MOUSE_PRESSED, ui::EventTypeFromNative(event));
   EXPECT_EQ(ui::EF_LEFT_MOUSE_BUTTON, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
 
   event =
       TestMouseEvent(kCGEventOtherMouseDown, location, kCGEventFlagMaskShift);
   EXPECT_EQ(ui::ET_MOUSE_PRESSED, ui::EventTypeFromNative(event));
   EXPECT_EQ(ui::EF_MIDDLE_MOUSE_BUTTON | ui::EF_SHIFT_DOWN,
             ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
 
   event = TestMouseEvent(kCGEventRightMouseUp, location, kNoEventFlags);
   EXPECT_EQ(ui::ET_MOUSE_RELEASED, ui::EventTypeFromNative(event));
   EXPECT_EQ(ui::EF_RIGHT_MOUSE_BUTTON, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
 
   // Scroll up.
   event = TestScrollEvent(location, 0, 1);
   EXPECT_EQ(ui::ET_SCROLL, ui::EventTypeFromNative(event));
   EXPECT_EQ(0, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location.ToString(), ui::EventLocationFromNative(event).ToString());
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
   offset = ui::GetMouseWheelOffset(event);
   EXPECT_GT(offset.y(), 0);
   EXPECT_EQ(0, offset.x());
 
   // Scroll down.
   event = TestScrollEvent(location, 0, -1);
   EXPECT_EQ(ui::ET_SCROLL, ui::EventTypeFromNative(event));
   EXPECT_EQ(0, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
   offset = ui::GetMouseWheelOffset(event);
   EXPECT_LT(offset.y(), 0);
   EXPECT_EQ(0, offset.x());
 
   // Scroll left.
   event = TestScrollEvent(location, 1, 0);
   EXPECT_EQ(ui::ET_SCROLL, ui::EventTypeFromNative(event));
   EXPECT_EQ(0, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
   offset = ui::GetMouseWheelOffset(event);
   EXPECT_EQ(0, offset.y());
   EXPECT_GT(offset.x(), 0);
 
   // Scroll right.
   event = TestScrollEvent(location, -1, 0);
   EXPECT_EQ(ui::ET_SCROLL, ui::EventTypeFromNative(event));
   EXPECT_EQ(0, ui::EventFlagsFromNative(event));
   EXPECT_EQ(location, ui::EventLocationFromNative(event));
+  EXPECT_EQ(ui::EventLocationFromNative(event),
+            gfx::ToFlooredPoint(ui::EventLocationFromNativeF(event)));
   offset = ui::GetMouseWheelOffset(event);
   EXPECT_EQ(0, offset.y());
   EXPECT_LT(offset.x(), 0);
 }
 
 // Test correct location when the window has a native titlebar.
 TEST_F(EventsMacTest, NativeTitlebarEventLocation) {
   gfx::Point location(5, 10);
   NSUInteger style_mask = NSTitledWindowMask | NSClosableWindowMask |
                           NSMiniaturizableWindowMask | NSResizableWindowMask;
@@ skipping 259 matching lines @@
     NSEvent* native_event = cocoa_test_event_utils::KeyEventWithModifierOnly(
         test_case.key_code, test_case.modifier_flags);
     std::unique_ptr<ui::Event> event = EventFromNative(native_event);
     EXPECT_TRUE(event);
     EXPECT_EQ(test_case.expected_type, event->type());
     EXPECT_EQ(test_case.expected_key_code, event->AsKeyEvent()->key_code());
   }
 }
 
 }  // namespace ui