content/browser/renderer_host/input/web_input_event_unittest.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/command_line.h"
   6 #include "testing/gtest/include/gtest/gtest.h"
   7 #include "third_party/WebKit/public/web/WebInputEvent.h"
   8 #include "ui/events/event_constants.h"
   9 #include "ui/gfx/display.h"
  10 #include "ui/gfx/switches.h"
  11
  12 #if defined(OS_WIN)
  13 #include "base/win/windows_version.h"
  14 #include "content/browser/renderer_host/input/web_input_event_builders_win.h"
  15 #endif
  16
  17 using blink::WebMouseEvent;
  18
  19 namespace content {
  20
  21 #if defined(OS_WIN)
  22 // This test validates that Pixel to DIP conversion occurs as needed in the
  23 // WebMouseEventBuilder::Build function.
  24 TEST(WebInputEventBuilderTest, TestMouseEventScale) {
  25   if (base::win::GetVersion() < base::win::VERSION_WIN7)
  26     return;
  27
  28   gfx::Display::ResetForceDeviceScaleFactorForTesting();
  29
  30   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
  31   command_line->AppendSwitchASCII(switches::kForceDeviceScaleFactor, "2");
  32
  33   // Synthesize a mouse move with x = 300 and y = 200.
  34   WebMouseEvent mouse_move =
  35       WebMouseEventBuilder::Build(::GetDesktopWindow(), WM_MOUSEMOVE, 0,
  36                                   MAKELPARAM(300, 200), 100);
  37
  38   // The WebMouseEvent.x, WebMouseEvent.y, WebMouseEvent.windowX and
  39   // WebMouseEvent.windowY fields should be in pixels on return and hence
  40   // should be the same value as the x and y coordinates passed in to the
  41   // WebMouseEventBuilder::Build function.
  42   EXPECT_EQ(300, mouse_move.x);
  43   EXPECT_EQ(200, mouse_move.y);
  44
  45   EXPECT_EQ(300, mouse_move.windowX);
  46   EXPECT_EQ(200, mouse_move.windowY);
  47
  48   // WebMouseEvent.globalX and WebMouseEvent.globalY are calculated in DIPs.
  49   EXPECT_EQ(150, mouse_move.globalX);
  50   EXPECT_EQ(100, mouse_move.globalY);
  51
  52   command_line->AppendSwitchASCII(switches::kForceDeviceScaleFactor, "1");
  53   gfx::Display::ResetForceDeviceScaleFactorForTesting();
  54 }
  55 #endif
  56
  57 }  // namespace content