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 "content/browser/renderer_host/input/mouse_wheel_rails_filter_mac.h"
6 #include "testing/gtest/include/gtest/gtest.h"
7
8 using blink::WebInputEvent;
9 using blink::WebMouseWheelEvent;
10
11 namespace content {
12 namespace {
13
MakeEvent(WebMouseWheelEvent::Phase phase,float delta_x,float delta_y)14 WebMouseWheelEvent MakeEvent(WebMouseWheelEvent::Phase phase,
15 float delta_x,
16 float delta_y) {
17 WebMouseWheelEvent event;
18 event.phase = phase;
19 event.delta_x = delta_x;
20 event.delta_y = delta_y;
21 return event;
22 }
23
TEST(MouseWheelRailsFilterMacTest,Functionality)24 TEST(MouseWheelRailsFilterMacTest, Functionality) {
25 WebInputEvent::RailsMode mode;
26 MouseWheelRailsFilterMac filter;
27
28 // Start with a mostly-horizontal event and see that it is locked
29 // horizontally and continues to be locked.
30 mode =
31 filter.UpdateRailsMode(MakeEvent(WebMouseWheelEvent::kPhaseBegan, 2, 1));
32 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
33 mode = filter.UpdateRailsMode(
34 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 2, 2));
35 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
36 mode = filter.UpdateRailsMode(
37 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 10, -4));
38 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
39
40 // Change from horizontal to vertical and back.
41 mode =
42 filter.UpdateRailsMode(MakeEvent(WebMouseWheelEvent::kPhaseBegan, 4, 1));
43 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
44 mode = filter.UpdateRailsMode(
45 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 3, 4));
46 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
47 mode = filter.UpdateRailsMode(
48 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 1, 4));
49 EXPECT_EQ(mode, WebInputEvent::kRailsModeVertical);
50 mode = filter.UpdateRailsMode(
51 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 10, 0));
52 EXPECT_EQ(mode, WebInputEvent::kRailsModeHorizontal);
53
54 // Make sure zeroes don't break things.
55 mode = filter.UpdateRailsMode(
56 MakeEvent(WebMouseWheelEvent::kPhaseChanged, 0, 0));
57 EXPECT_EQ(mode, WebInputEvent::kRailsModeFree);
58 mode =
59 filter.UpdateRailsMode(MakeEvent(WebMouseWheelEvent::kPhaseBegan, 0, 0));
60 EXPECT_EQ(mode, WebInputEvent::kRailsModeFree);
61 }
62
63 } // namespace
64 } // namespace content
65