remoting/client/touch_input_scaler_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 "remoting/client/touch_input_scaler.h"
   6
   7 #include <cmath>
   8
   9 #include "remoting/protocol/protocol_mock_objects.h"
  10 #include "remoting/protocol/test_event_matchers.h"
  11 #include "testing/gmock/include/gmock/gmock.h"
  12 #include "testing/gtest/include/gtest/gtest.h"
  13
  14 using ::testing::_;
  15 using ::testing::AllOf;
  16 using ::testing::PrintToString;
  17
  18 namespace remoting {
  19
  20 using protocol::MockInputStub;
  21 using protocol::TouchEvent;
  22 using protocol::TouchEventPoint;
  23 using protocol::test::EqualsTouchPointCoordinates;
  24 using protocol::test::EqualsTouchPointRadii;
  25
  26 namespace {
  27
  28 const float kDefaultRadius = 30.0f;
  29 const float kDefaultXCoord = 1.0f;
  30 const float kDefaultYCoord = 1.0f;
  31
  32 struct PointInfo {
  33   PointInfo(float x, float y)
  34       : PointInfo(x, y, kDefaultRadius, kDefaultRadius) {}
  35   PointInfo(float x, float y, float radius_x, float radius_y)
  36       : x(x), y(y), radius_x(radius_x), radius_y(radius_y) {}
  37
  38   float x;
  39   float y;
  40   float radius_x;
  41   float radius_y;
  42 };
  43
  44 const PointInfo kDefaultPointInfo = {kDefaultXCoord,
  45                                      kDefaultYCoord,
  46                                      kDefaultRadius,
  47                                      kDefaultRadius};
  48
  49 }  // namespace
  50
  51 class TouchInputScalerTest : public ::testing::Test {
  52  protected:
  53   TouchInputScalerTest() : touch_input_scaler_(&mock_stub_) {}
  54
  55   void AddInputCoordinate(const PointInfo& point_info) {
  56     point_infos_.push_back(point_info);
  57   }
  58
  59   void AddDefaultTestPoint() { point_infos_.push_back(kDefaultPointInfo); }
  60
  61   void InjectTestTouchEvent() {
  62     TouchEvent e;
  63     e.set_event_type(TouchEvent::TOUCH_POINT_MOVE);
  64
  65     uint32_t id = 1;
  66     for (const PointInfo& point_info : point_infos_) {
  67       TouchEventPoint* point = e.add_touch_points();
  68       point->set_id(id++);
  69       point->set_x(point_info.x);
  70       point->set_y(point_info.y);
  71       point->set_radius_x(point_info.radius_x);
  72       point->set_radius_y(point_info.radius_y);
  73     }
  74
  75     touch_input_scaler_.InjectTouchEvent(e);
  76   }
  77
  78   void SetInputDimensions(int width, int height) {
  79     touch_input_scaler_.set_input_size(webrtc::DesktopSize(width, height));
  80   }
  81
  82   void SetOutputDimensions(int width, int height) {
  83     touch_input_scaler_.set_output_size(webrtc::DesktopSize(width, height));
  84   }
  85
  86   MockInputStub mock_stub_;
  87   TouchInputScaler touch_input_scaler_;
  88
  89  private:
  90   std::vector<PointInfo> point_infos_;
  91
  92   DISALLOW_COPY_AND_ASSIGN(TouchInputScalerTest);
  93 };
  94
  95 // TouchInputFilter require both input and output dimensions.
  96 // These test verify that no events are forwarded to the next InputStub if
  97 // either dimensions are not set or 0.
  98 TEST_F(TouchInputScalerTest, NoDimensionsSet) {
  99   AddDefaultTestPoint();
 100   EXPECT_CALL(mock_stub_, InjectTouchEvent(_)).Times(0);
 101   InjectTestTouchEvent();
 102 }
 103
 104 TEST_F(TouchInputScalerTest, BothDimensionsZero) {
 105   SetInputDimensions(0, 0);
 106   SetOutputDimensions(0, 0);
 107   AddDefaultTestPoint();
 108   EXPECT_CALL(mock_stub_, InjectTouchEvent(_)).Times(0);
 109   InjectTestTouchEvent();
 110 }
 111
 112 TEST_F(TouchInputScalerTest, SetOnlyInputDimensions) {
 113   SetInputDimensions(50, 60);
 114   AddDefaultTestPoint();
 115   EXPECT_CALL(mock_stub_, InjectTouchEvent(_)).Times(0);
 116   InjectTestTouchEvent();
 117 }
 118
 119 TEST_F(TouchInputScalerTest, SetOnlyOutputDimensions) {
 120   SetOutputDimensions(50, 60);
 121   AddDefaultTestPoint();
 122   EXPECT_CALL(mock_stub_, InjectTouchEvent(_)).Times(0);
 123   InjectTestTouchEvent();
 124 }
 125
 126 // The x,y coordinate fall in the desktop size.
 127 TEST_F(TouchInputScalerTest, NoClampingNoScaling) {
 128   SetInputDimensions(50, 60);
 129   SetOutputDimensions(50, 60);
 130
 131   AddInputCoordinate({10.0f, 15.0f});
 132   TouchEvent expected_out;
 133   TouchEventPoint* point = expected_out.add_touch_points();
 134   point->set_x(10.0f);
 135   point->set_y(15.0f);
 136
 137   EXPECT_CALL(mock_stub_,
 138               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 139   InjectTestTouchEvent();
 140 }
 141
 142 // Make sure clamping works.
 143 TEST_F(TouchInputScalerTest, ClampingNoScaling) {
 144   SetInputDimensions(50, 60);
 145   SetOutputDimensions(50, 60);
 146
 147   // Note that this could happen if touch started in the chromoting window but
 148   // the finger moved off the windows.
 149   AddInputCoordinate({-1.0f, 1.0f});
 150   TouchEvent expected_out;
 151   TouchEventPoint* point = expected_out.add_touch_points();
 152   point->set_x(0.0f);
 153   point->set_y(1.0f);
 154
 155   EXPECT_CALL(mock_stub_,
 156               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 157   InjectTestTouchEvent();
 158 }
 159
 160 TEST_F(TouchInputScalerTest, ClampingMultiplePointsNoScaling) {
 161   SetInputDimensions(50, 60);
 162   SetOutputDimensions(50, 60);
 163
 164   AddInputCoordinate({-1.0f, 1.0f});  // Fall off left.
 165   TouchEvent expected_out;
 166   TouchEventPoint* point = expected_out.add_touch_points();
 167   point->set_x(0.0f);
 168   point->set_y(1.0f);
 169
 170   AddInputCoordinate({100.0f, 1.0f});  // Fall off right.
 171   point = expected_out.add_touch_points();
 172   point->set_x(49.0f);
 173   point->set_y(1.0f);
 174
 175   AddInputCoordinate({20.0f, 15.0f});  // Should not be clamped.
 176   point = expected_out.add_touch_points();
 177   point->set_x(20.0f);
 178   point->set_y(15.0f);
 179
 180   AddInputCoordinate({3.0f, -1.0f});  // Fall off above.
 181   point = expected_out.add_touch_points();
 182   point->set_x(3.0f);
 183   point->set_y(0.0f);
 184
 185   AddInputCoordinate({10.0f, 200.0f});  // Fall off below.
 186   point = expected_out.add_touch_points();
 187   point->set_x(10.0f);
 188   point->set_y(59.0f);
 189
 190   EXPECT_CALL(mock_stub_,
 191               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 192   InjectTestTouchEvent();
 193 }
 194
 195 // Verify up-scaling works. All coordinates should fall inside the output
 196 // dimensions after scaling.
 197 TEST_F(TouchInputScalerTest, UpScalingNoClamping) {
 198   SetInputDimensions(20, 20);
 199   SetOutputDimensions(40, 40);
 200
 201   AddInputCoordinate({1.0f, 1.0f});
 202   TouchEvent expected_out;
 203   TouchEventPoint* point = expected_out.add_touch_points();
 204   point->set_x(2.0f);
 205   point->set_y(2.0f);
 206
 207   AddInputCoordinate({1.2f, 4.2f});
 208   point = expected_out.add_touch_points();
 209   point->set_x(2.4f);
 210   point->set_y(8.4f);
 211
 212   EXPECT_CALL(mock_stub_,
 213               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 214   InjectTestTouchEvent();
 215 }
 216
 217 // Verify up-scaling works with clamping.
 218 TEST_F(TouchInputScalerTest, UpScalingWithClamping) {
 219   SetInputDimensions(20, 20);
 220   SetOutputDimensions(40, 40);
 221
 222   AddInputCoordinate({25.0f, 25.0f});
 223   TouchEvent expected_out;
 224   TouchEventPoint* point = expected_out.add_touch_points();
 225   point->set_x(39.0f);
 226   point->set_y(39.0f);
 227
 228   EXPECT_CALL(mock_stub_,
 229               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 230   InjectTestTouchEvent();
 231 }
 232
 233 // Verify down scaling works. All coordinates should fall inside the output
 234 // dimensions after scaling.
 235 TEST_F(TouchInputScalerTest, DownScalingNoClamping) {
 236   SetInputDimensions(40, 40);
 237   SetOutputDimensions(20, 20);
 238
 239   AddInputCoordinate({2.0f, 2.0f});
 240   TouchEvent expected_out;
 241   TouchEventPoint* point = expected_out.add_touch_points();
 242   point->set_x(1.0f);
 243   point->set_y(1.0f);
 244
 245   AddInputCoordinate({6.0f, 3.0f});
 246   point = expected_out.add_touch_points();
 247   point->set_x(3.0);
 248   point->set_y(1.5f);
 249
 250   EXPECT_CALL(mock_stub_,
 251               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 252   InjectTestTouchEvent();
 253 }
 254
 255 // Verify down scaling works with clamping.
 256 TEST_F(TouchInputScalerTest, DownScalingWithClamping) {
 257   SetInputDimensions(40, 40);
 258   SetOutputDimensions(20, 20);
 259
 260   AddInputCoordinate({-20.0f, 10.0f});
 261   TouchEvent expected_out;
 262   TouchEventPoint* point = expected_out.add_touch_points();
 263   point->set_x(0.0f);
 264   point->set_y(5.0f);
 265
 266   AddInputCoordinate({10.0f, -20.0f});
 267   point = expected_out.add_touch_points();
 268   point->set_x(5.0f);
 269   point->set_y(0.0f);
 270
 271   AddInputCoordinate({6.0f, 80.0f});
 272   point = expected_out.add_touch_points();
 273   point->set_x(3.0f);
 274   point->set_y(19.0f);
 275
 276   AddInputCoordinate({80.0f, 6.0f});
 277   point = expected_out.add_touch_points();
 278   point->set_x(19.0f);
 279   point->set_y(3.0f);
 280
 281   EXPECT_CALL(mock_stub_,
 282               InjectTouchEvent(EqualsTouchPointCoordinates(expected_out)));
 283   InjectTestTouchEvent();
 284 }
 285
 286 // Verify that the radii are up-scaled.
 287 TEST_F(TouchInputScalerTest, UpScaleRadii) {
 288   SetInputDimensions(20, 20);
 289   SetOutputDimensions(40, 40);
 290
 291   AddInputCoordinate({0.0f, 0.0f, 1.0f, 2.0f});
 292   TouchEvent expected_out;
 293   TouchEventPoint* point = expected_out.add_touch_points();
 294   point->set_radius_x(2.0f);
 295   point->set_radius_y(4.0f);
 296
 297   EXPECT_CALL(mock_stub_,
 298               InjectTouchEvent(EqualsTouchPointRadii(expected_out)));
 299   InjectTestTouchEvent();
 300 }
 301
 302 // Verify that the radii are down-scaled.
 303 TEST_F(TouchInputScalerTest, DownScaleRadii) {
 304   SetInputDimensions(20, 20);
 305   SetOutputDimensions(10, 10);
 306
 307   AddInputCoordinate({0.0f, 0.0f, 5.0f, 4.0f});
 308   TouchEvent expected_out;
 309   TouchEventPoint* point = expected_out.add_touch_points();
 310   point->set_radius_x(2.5f);
 311   point->set_radius_y(2.0f);
 312
 313   EXPECT_CALL(mock_stub_,
 314               InjectTouchEvent(EqualsTouchPointRadii(expected_out)));
 315   InjectTestTouchEvent();
 316 }
 317
 318 // Verify that up-scaling with clamping works for x,y coordinates and radii all
 319 // work together.
 320 TEST_F(TouchInputScalerTest, UpScaleCoordinatesAndRadii) {
 321   SetInputDimensions(20, 20);
 322   SetOutputDimensions(40, 40);
 323
 324   AddInputCoordinate({5.0f, 12.0f, 3.0f, 2.0f});
 325   TouchEvent expected_out;
 326   TouchEventPoint* point = expected_out.add_touch_points();
 327   point->set_x(10.0f);
 328   point->set_y(24.0f);
 329   point->set_radius_x(6.0f);
 330   point->set_radius_y(4.0f);
 331
 332   // Make sure clamping and scaling all work.
 333   AddInputCoordinate({22.0f, -1.0f, 8.0f, 3.0f});
 334   point = expected_out.add_touch_points();
 335   point->set_x(39.0f);
 336   point->set_y(0.0f);
 337   point->set_radius_x(16.0f);
 338   point->set_radius_y(6.0f);
 339
 340   EXPECT_CALL(mock_stub_,
 341               InjectTouchEvent(AllOf(EqualsTouchPointCoordinates(expected_out),
 342                                      EqualsTouchPointRadii(expected_out))));
 343   InjectTestTouchEvent();
 344 }
 345
 346 // Verify that down-scaling with clamping works for x,y coordinates and radii
 347 // all work together.
 348 TEST_F(TouchInputScalerTest, DownScaleCoordinatesAndRadii) {
 349   SetInputDimensions(60, 60);
 350   SetOutputDimensions(20, 20);
 351
 352   AddInputCoordinate({50.0f, 24.0f, 10.0f, 9.0f});
 353   TouchEvent expected_out;
 354   TouchEventPoint* point = expected_out.add_touch_points();
 355   point->set_x(16.666f);
 356   point->set_y(8.0f);
 357   point->set_radius_x(3.333f);
 358   point->set_radius_y(3.0f);
 359
 360   // Make sure clamping and scaling all work.
 361   AddInputCoordinate({70.0f, 82.0f, 8.0f, 3.0f});
 362   point = expected_out.add_touch_points();
 363   point->set_x(19.0f);
 364   point->set_y(19.0f);
 365   point->set_radius_x(2.666f);
 366   point->set_radius_y(1.0f);
 367
 368   EXPECT_CALL(mock_stub_,
 369               InjectTouchEvent(AllOf(EqualsTouchPointCoordinates(expected_out),
 370                                      EqualsTouchPointRadii(expected_out))));
 371   InjectTestTouchEvent();
 372 }
 373
 374 }  // namespace remoting