[Mac] Add gfx::ScreenPoint[To|From]NSPoint.

ui/gfx/mac/coordinate_conversion_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 "ui/gfx/mac/coordinate_conversion.h"
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/mac/scoped_objc_class_swizzler.h"
 #include "base/macros.h"
@@ skipping 63 matching lines @@
 // 189             10   Window of height 40 fills in pixel
 // 179  ---------  20   at index 20
 // 169  |       |  30   through
 // ...  :       :  ..   to
 // 150  |       |  49   pixel
 // 140  ---------  59   at index 59
 // 130             69   (inclusive).
 //  ..             ..
 //   0            199
 TEST_F(MacCoordinateConversionTest, ScreenRectToFromNSRect) {
+  // Window on the primary screen.
   Rect gfx_rect = Rect(10, 20, 30, 40);
   NSRect ns_rect = ScreenRectToNSRect(gfx_rect);
   EXPECT_NSEQ(NSMakeRect(10, 140, 30, 40), ns_rect);
-  EXPECT_EQ(gfx_rect.ToString(), ScreenRectFromNSRect(ns_rect).ToString());
+  EXPECT_EQ(gfx_rect, ScreenRectFromNSRect(ns_rect));
 
   // Window in a screen to the left of the primary screen.
   gfx_rect = Rect(-40, 20, 30, 40);
   ns_rect = ScreenRectToNSRect(gfx_rect);
   EXPECT_NSEQ(NSMakeRect(-40, 140, 30, 40), ns_rect);
-  EXPECT_EQ(gfx_rect.ToString(), ScreenRectFromNSRect(ns_rect).ToString());
+  EXPECT_EQ(gfx_rect, ScreenRectFromNSRect(ns_rect));
 
   // Window in a screen below the primary screen.
   gfx_rect = Rect(10, 220, 30, 40);
   ns_rect = ScreenRectToNSRect(gfx_rect);
   EXPECT_NSEQ(NSMakeRect(10, -60, 30, 40), ns_rect);
-  EXPECT_EQ(gfx_rect.ToString(), ScreenRectFromNSRect(ns_rect).ToString());
+  EXPECT_EQ(gfx_rect, ScreenRectFromNSRect(ns_rect));
 
   // Window in a screen below and to the left primary screen.
   gfx_rect = Rect(-40, 220, 30, 40);
   ns_rect = ScreenRectToNSRect(gfx_rect);
   EXPECT_NSEQ(NSMakeRect(-40, -60, 30, 40), ns_rect);
-  EXPECT_EQ(gfx_rect.ToString(), ScreenRectFromNSRect(ns_rect).ToString());
+  EXPECT_EQ(gfx_rect, ScreenRectFromNSRect(ns_rect));
+}
+
+TEST_F(MacCoordinateConversionTest, ScreenPointToFromNSPoint) {

[tapted, 2015/08/11 04:01:01]

nit: boring comment. I guess something like

// Test point conversions using the same setup as ScreenRectToFromNSRect, but
// using only the origin.

[jackhou1, 2015/08/11 06:40:56]

Done.

+  // Point on the primary screen.
+  Point gfx_point = Point(10, 20);
+  NSPoint ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_NSEQ(NSMakePoint(10, 180), ns_point);
+  EXPECT_EQ(gfx_point, ScreenPointFromNSPoint(ns_point));
+
+  // Point in a screen to the left of the primary screen.
+  gfx_point = Point(-40, 20);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_NSEQ(NSMakePoint(-40, 180), ns_point);
+  EXPECT_EQ(gfx_point, ScreenPointFromNSPoint(ns_point));
+
+  // Point in a screen below the primary screen.
+  gfx_point = Point(10, 220);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_NSEQ(NSMakePoint(10, -20), ns_point);
+  EXPECT_EQ(gfx_point, ScreenPointFromNSPoint(ns_point));
+
+  // Point in a screen below and to the left primary screen.
+  gfx_point = Point(-40, 220);
+  ns_point = ScreenPointToNSPoint(gfx_point);
+  EXPECT_NSEQ(NSMakePoint(-40, -20), ns_point);
+  EXPECT_EQ(gfx_point, ScreenPointFromNSPoint(ns_point));
 }
 
 }  // namespace gfx