Flutter Linux Embedder
fl_scrolling_manager_test.cc
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1 // Copyright 2013 The Flutter 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 "flutter/shell/platform/linux/fl_scrolling_manager.h"
6 #include "flutter/shell/platform/embedder/test_utils/proc_table_replacement.h"
7 #include "flutter/shell/platform/linux/fl_engine_private.h"
8 
9 #include <gdk/gdkwayland.h>
10 #include <cstring>
11 #include <vector>
12 
13 #include "gtest/gtest.h"
14 
15 TEST(FlScrollingManagerTest, DiscreteDirectional) {
16  g_autoptr(FlDartProject) project = fl_dart_project_new();
17  g_autoptr(FlEngine) engine = fl_engine_new(project);
18 
19  g_autoptr(GError) error = nullptr;
20  EXPECT_TRUE(fl_engine_start(engine, &error));
21  EXPECT_EQ(error, nullptr);
22 
23  std::vector<FlutterPointerEvent> pointer_events;
24  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
25  SendPointerEvent,
26  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
27  size_t events_count) {
28  for (size_t i = 0; i < events_count; i++) {
29  pointer_events.push_back(events[i]);
30  }
31 
32  return kSuccess;
33  }));
34 
35  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
36 
37  GdkDevice* mouse =
38  GDK_DEVICE(g_object_new(gdk_wayland_device_get_type(), "input-source",
39  GDK_SOURCE_MOUSE, nullptr));
40  GdkEventScroll* event =
41  reinterpret_cast<GdkEventScroll*>(gdk_event_new(GDK_SCROLL));
42  event->time = 1;
43  event->x = 4.0;
44  event->y = 8.0;
45  event->device = mouse;
46  event->direction = GDK_SCROLL_UP;
47  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
48  EXPECT_EQ(pointer_events.size(), 1u);
49  EXPECT_EQ(pointer_events[0].x, 4.0);
50  EXPECT_EQ(pointer_events[0].y, 8.0);
51  EXPECT_EQ(pointer_events[0].device_kind, kFlutterPointerDeviceKindMouse);
52  EXPECT_EQ(pointer_events[0].timestamp,
53  1000lu); // Milliseconds -> Microseconds
54  EXPECT_EQ(pointer_events[0].scroll_delta_x, 0);
55  EXPECT_EQ(pointer_events[0].scroll_delta_y, 53 * -1.0);
56  event->direction = GDK_SCROLL_DOWN;
57  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
58  EXPECT_EQ(pointer_events.size(), 2u);
59  EXPECT_EQ(pointer_events[1].x, 4.0);
60  EXPECT_EQ(pointer_events[1].y, 8.0);
61  EXPECT_EQ(pointer_events[1].device_kind, kFlutterPointerDeviceKindMouse);
62  EXPECT_EQ(pointer_events[1].timestamp,
63  1000lu); // Milliseconds -> Microseconds
64  EXPECT_EQ(pointer_events[1].scroll_delta_x, 0);
65  EXPECT_EQ(pointer_events[1].scroll_delta_y, 53 * 1.0);
66  event->direction = GDK_SCROLL_LEFT;
67  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
68  EXPECT_EQ(pointer_events.size(), 3u);
69  EXPECT_EQ(pointer_events[2].x, 4.0);
70  EXPECT_EQ(pointer_events[2].y, 8.0);
71  EXPECT_EQ(pointer_events[2].device_kind, kFlutterPointerDeviceKindMouse);
72  EXPECT_EQ(pointer_events[2].timestamp,
73  1000lu); // Milliseconds -> Microseconds
74  EXPECT_EQ(pointer_events[2].scroll_delta_x, 53 * -1.0);
75  EXPECT_EQ(pointer_events[2].scroll_delta_y, 0);
76  event->direction = GDK_SCROLL_RIGHT;
77  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
78  EXPECT_EQ(pointer_events.size(), 4u);
79  EXPECT_EQ(pointer_events[3].x, 4.0);
80  EXPECT_EQ(pointer_events[3].y, 8.0);
81  EXPECT_EQ(pointer_events[3].device_kind, kFlutterPointerDeviceKindMouse);
82  EXPECT_EQ(pointer_events[3].timestamp,
83  1000lu); // Milliseconds -> Microseconds
84  EXPECT_EQ(pointer_events[3].scroll_delta_x, 53 * 1.0);
85  EXPECT_EQ(pointer_events[3].scroll_delta_y, 0);
86 }
87 
88 TEST(FlScrollingManagerTest, DiscreteScrolling) {
89  g_autoptr(FlDartProject) project = fl_dart_project_new();
90  g_autoptr(FlEngine) engine = fl_engine_new(project);
91 
92  g_autoptr(GError) error = nullptr;
93  EXPECT_TRUE(fl_engine_start(engine, &error));
94  EXPECT_EQ(error, nullptr);
95 
96  std::vector<FlutterPointerEvent> pointer_events;
97  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
98  SendPointerEvent,
99  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
100  size_t events_count) {
101  for (size_t i = 0; i < events_count; i++) {
102  pointer_events.push_back(events[i]);
103  }
104 
105  return kSuccess;
106  }));
107 
108  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
109 
110  GdkDevice* mouse =
111  GDK_DEVICE(g_object_new(gdk_wayland_device_get_type(), "input-source",
112  GDK_SOURCE_MOUSE, nullptr));
113  GdkEventScroll* event =
114  reinterpret_cast<GdkEventScroll*>(gdk_event_new(GDK_SCROLL));
115  event->time = 1;
116  event->x = 4.0;
117  event->y = 8.0;
118  event->delta_x = 1.0;
119  event->delta_y = 2.0;
120  event->device = mouse;
121  event->direction = GDK_SCROLL_SMOOTH;
122  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
123  EXPECT_EQ(pointer_events.size(), 1u);
124  EXPECT_EQ(pointer_events[0].x, 4.0);
125  EXPECT_EQ(pointer_events[0].y, 8.0);
126  EXPECT_EQ(pointer_events[0].device_kind, kFlutterPointerDeviceKindMouse);
127  EXPECT_EQ(pointer_events[0].timestamp,
128  1000lu); // Milliseconds -> Microseconds
129  EXPECT_EQ(pointer_events[0].scroll_delta_x, 53 * 1.0);
130  EXPECT_EQ(pointer_events[0].scroll_delta_y, 53 * 2.0);
131 }
132 
133 TEST(FlScrollingManagerTest, Panning) {
134  g_autoptr(FlDartProject) project = fl_dart_project_new();
135  g_autoptr(FlEngine) engine = fl_engine_new(project);
136 
137  g_autoptr(GError) error = nullptr;
138  EXPECT_TRUE(fl_engine_start(engine, &error));
139  EXPECT_EQ(error, nullptr);
140 
141  std::vector<FlutterPointerEvent> pointer_events;
142  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
143  SendPointerEvent,
144  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
145  size_t events_count) {
146  for (size_t i = 0; i < events_count; i++) {
147  pointer_events.push_back(events[i]);
148  }
149 
150  return kSuccess;
151  }));
152 
153  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
154 
155  GdkDevice* touchpad =
156  GDK_DEVICE(g_object_new(gdk_wayland_device_get_type(), "input-source",
157  GDK_SOURCE_TOUCHPAD, nullptr));
158  GdkEventScroll* event =
159  reinterpret_cast<GdkEventScroll*>(gdk_event_new(GDK_SCROLL));
160  event->time = 1;
161  event->x = 4.0;
162  event->y = 8.0;
163  event->delta_x = 1.0;
164  event->delta_y = 2.0;
165  event->device = touchpad;
166  event->direction = GDK_SCROLL_SMOOTH;
167  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
168  EXPECT_EQ(pointer_events.size(), 2u);
169  EXPECT_EQ(pointer_events[0].x, 4.0);
170  EXPECT_EQ(pointer_events[0].y, 8.0);
171  EXPECT_EQ(pointer_events[0].timestamp,
172  1000lu); // Milliseconds -> Microseconds
173  EXPECT_EQ(pointer_events[0].phase, kPanZoomStart);
174  EXPECT_EQ(pointer_events[1].x, 4.0);
175  EXPECT_EQ(pointer_events[1].y, 8.0);
176  EXPECT_EQ(pointer_events[1].timestamp,
177  1000lu); // Milliseconds -> Microseconds
178  EXPECT_EQ(pointer_events[1].phase, kPanZoomUpdate);
179  EXPECT_EQ(pointer_events[1].pan_x, 53 * -1.0); // directions get swapped
180  EXPECT_EQ(pointer_events[1].pan_y, 53 * -2.0);
181  EXPECT_EQ(pointer_events[1].scale, 1.0);
182  EXPECT_EQ(pointer_events[1].rotation, 0.0);
183  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
184  EXPECT_EQ(pointer_events.size(), 3u);
185  EXPECT_EQ(pointer_events[2].x, 4.0);
186  EXPECT_EQ(pointer_events[2].y, 8.0);
187  EXPECT_EQ(pointer_events[2].timestamp,
188  1000lu); // Milliseconds -> Microseconds
189  EXPECT_EQ(pointer_events[2].phase, kPanZoomUpdate);
190  EXPECT_EQ(pointer_events[2].pan_x, 53 * -2.0); // directions get swapped
191  EXPECT_EQ(pointer_events[2].pan_y, 53 * -4.0);
192  EXPECT_EQ(pointer_events[2].scale, 1.0);
193  EXPECT_EQ(pointer_events[2].rotation, 0.0);
194  event->is_stop = true;
195  fl_scrolling_manager_handle_scroll_event(manager, event, 1.0);
196  EXPECT_EQ(pointer_events.size(), 4u);
197  EXPECT_EQ(pointer_events[3].x, 4.0);
198  EXPECT_EQ(pointer_events[3].y, 8.0);
199  EXPECT_EQ(pointer_events[3].timestamp,
200  1000lu); // Milliseconds -> Microseconds
201  EXPECT_EQ(pointer_events[3].phase, kPanZoomEnd);
202 }
203 
204 TEST(FlScrollingManagerTest, Zooming) {
205  g_autoptr(FlDartProject) project = fl_dart_project_new();
206  g_autoptr(FlEngine) engine = fl_engine_new(project);
207 
208  g_autoptr(GError) error = nullptr;
209  EXPECT_TRUE(fl_engine_start(engine, &error));
210  EXPECT_EQ(error, nullptr);
211 
212  std::vector<FlutterPointerEvent> pointer_events;
213  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
214  SendPointerEvent,
215  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
216  size_t events_count) {
217  for (size_t i = 0; i < events_count; i++) {
218  pointer_events.push_back(events[i]);
219  }
220 
221  return kSuccess;
222  }));
223 
224  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
225 
226  size_t time_start = g_get_real_time();
227  fl_scrolling_manager_handle_zoom_begin(manager);
228  EXPECT_EQ(pointer_events.size(), 1u);
229  EXPECT_EQ(pointer_events[0].x, 0);
230  EXPECT_EQ(pointer_events[0].y, 0);
231  EXPECT_EQ(pointer_events[0].phase, kPanZoomStart);
232  EXPECT_GE(pointer_events[0].timestamp, time_start);
233  fl_scrolling_manager_handle_zoom_update(manager, 1.1);
234  EXPECT_EQ(pointer_events.size(), 2u);
235  EXPECT_EQ(pointer_events[1].x, 0);
236  EXPECT_EQ(pointer_events[1].y, 0);
237  EXPECT_EQ(pointer_events[1].phase, kPanZoomUpdate);
238  EXPECT_GE(pointer_events[1].timestamp, pointer_events[0].timestamp);
239  EXPECT_EQ(pointer_events[1].pan_x, 0);
240  EXPECT_EQ(pointer_events[1].pan_y, 0);
241  EXPECT_EQ(pointer_events[1].scale, 1.1);
242  EXPECT_EQ(pointer_events[1].rotation, 0);
243  fl_scrolling_manager_handle_zoom_end(manager);
244  EXPECT_EQ(pointer_events.size(), 3u);
245  EXPECT_EQ(pointer_events[2].x, 0);
246  EXPECT_EQ(pointer_events[2].y, 0);
247  EXPECT_EQ(pointer_events[2].phase, kPanZoomEnd);
248  EXPECT_GE(pointer_events[2].timestamp, pointer_events[1].timestamp);
249 }
250 
251 TEST(FlScrollingManagerTest, Rotating) {
252  g_autoptr(FlDartProject) project = fl_dart_project_new();
253  g_autoptr(FlEngine) engine = fl_engine_new(project);
254 
255  g_autoptr(GError) error = nullptr;
256  EXPECT_TRUE(fl_engine_start(engine, &error));
257  EXPECT_EQ(error, nullptr);
258 
259  std::vector<FlutterPointerEvent> pointer_events;
260  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
261  SendPointerEvent,
262  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
263  size_t events_count) {
264  for (size_t i = 0; i < events_count; i++) {
265  pointer_events.push_back(events[i]);
266  }
267 
268  return kSuccess;
269  }));
270 
271  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
272 
273  size_t time_start = g_get_real_time();
274  fl_scrolling_manager_handle_rotation_begin(manager);
275  EXPECT_EQ(pointer_events.size(), 1u);
276  EXPECT_EQ(pointer_events[0].x, 0);
277  EXPECT_EQ(pointer_events[0].y, 0);
278  EXPECT_EQ(pointer_events[0].phase, kPanZoomStart);
279  EXPECT_GE(pointer_events[0].timestamp, time_start);
280  fl_scrolling_manager_handle_rotation_update(manager, 0.5);
281  EXPECT_EQ(pointer_events.size(), 2u);
282  EXPECT_EQ(pointer_events[1].x, 0);
283  EXPECT_EQ(pointer_events[1].y, 0);
284  EXPECT_EQ(pointer_events[1].phase, kPanZoomUpdate);
285  EXPECT_GE(pointer_events[1].timestamp, pointer_events[0].timestamp);
286  EXPECT_EQ(pointer_events[1].pan_x, 0);
287  EXPECT_EQ(pointer_events[1].pan_y, 0);
288  EXPECT_EQ(pointer_events[1].scale, 1.0);
289  EXPECT_EQ(pointer_events[1].rotation, 0.5);
290  fl_scrolling_manager_handle_rotation_end(manager);
291  EXPECT_EQ(pointer_events.size(), 3u);
292  EXPECT_EQ(pointer_events[2].x, 0);
293  EXPECT_EQ(pointer_events[2].y, 0);
294  EXPECT_EQ(pointer_events[2].phase, kPanZoomEnd);
295  EXPECT_GE(pointer_events[2].timestamp, pointer_events[1].timestamp);
296 }
297 
298 TEST(FlScrollingManagerTest, SynchronizedZoomingAndRotating) {
299  g_autoptr(FlDartProject) project = fl_dart_project_new();
300  g_autoptr(FlEngine) engine = fl_engine_new(project);
301 
302  g_autoptr(GError) error = nullptr;
303  EXPECT_TRUE(fl_engine_start(engine, &error));
304  EXPECT_EQ(error, nullptr);
305 
306  std::vector<FlutterPointerEvent> pointer_events;
307  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
308  SendPointerEvent,
309  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
310  size_t events_count) {
311  for (size_t i = 0; i < events_count; i++) {
312  pointer_events.push_back(events[i]);
313  }
314 
315  return kSuccess;
316  }));
317 
318  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
319 
320  size_t time_start = g_get_real_time();
321  fl_scrolling_manager_handle_zoom_begin(manager);
322  EXPECT_EQ(pointer_events.size(), 1u);
323  EXPECT_EQ(pointer_events[0].x, 0);
324  EXPECT_EQ(pointer_events[0].y, 0);
325  EXPECT_EQ(pointer_events[0].phase, kPanZoomStart);
326  EXPECT_GE(pointer_events[0].timestamp, time_start);
327  fl_scrolling_manager_handle_zoom_update(manager, 1.1);
328  EXPECT_EQ(pointer_events.size(), 2u);
329  EXPECT_EQ(pointer_events[1].x, 0);
330  EXPECT_EQ(pointer_events[1].y, 0);
331  EXPECT_EQ(pointer_events[1].phase, kPanZoomUpdate);
332  EXPECT_GE(pointer_events[1].timestamp, pointer_events[0].timestamp);
333  EXPECT_EQ(pointer_events[1].pan_x, 0);
334  EXPECT_EQ(pointer_events[1].pan_y, 0);
335  EXPECT_EQ(pointer_events[1].scale, 1.1);
336  EXPECT_EQ(pointer_events[1].rotation, 0);
337  fl_scrolling_manager_handle_rotation_begin(manager);
338  EXPECT_EQ(pointer_events.size(), 2u);
339  fl_scrolling_manager_handle_rotation_update(manager, 0.5);
340  EXPECT_EQ(pointer_events.size(), 3u);
341  EXPECT_EQ(pointer_events[2].x, 0);
342  EXPECT_EQ(pointer_events[2].y, 0);
343  EXPECT_EQ(pointer_events[2].phase, kPanZoomUpdate);
344  EXPECT_GE(pointer_events[2].timestamp, pointer_events[1].timestamp);
345  EXPECT_EQ(pointer_events[2].pan_x, 0);
346  EXPECT_EQ(pointer_events[2].pan_y, 0);
347  EXPECT_EQ(pointer_events[2].scale, 1.1);
348  EXPECT_EQ(pointer_events[2].rotation, 0.5);
349  fl_scrolling_manager_handle_zoom_end(manager);
350  // End event should only be sent after both zoom and rotate complete.
351  EXPECT_EQ(pointer_events.size(), 3u);
352  fl_scrolling_manager_handle_rotation_end(manager);
353  EXPECT_EQ(pointer_events.size(), 4u);
354  EXPECT_EQ(pointer_events[3].x, 0);
355  EXPECT_EQ(pointer_events[3].y, 0);
356  EXPECT_EQ(pointer_events[3].phase, kPanZoomEnd);
357  EXPECT_GE(pointer_events[3].timestamp, pointer_events[2].timestamp);
358 }
359 
360 // Make sure that zoom and rotate sequences which don't end at the same time
361 // don't cause any problems.
362 TEST(FlScrollingManagerTest, UnsynchronizedZoomingAndRotating) {
363  g_autoptr(FlDartProject) project = fl_dart_project_new();
364  g_autoptr(FlEngine) engine = fl_engine_new(project);
365 
366  g_autoptr(GError) error = nullptr;
367  EXPECT_TRUE(fl_engine_start(engine, &error));
368  EXPECT_EQ(error, nullptr);
369 
370  std::vector<FlutterPointerEvent> pointer_events;
371  fl_engine_get_embedder_api(engine)->SendPointerEvent = MOCK_ENGINE_PROC(
372  SendPointerEvent,
373  ([&pointer_events](auto engine, const FlutterPointerEvent* events,
374  size_t events_count) {
375  for (size_t i = 0; i < events_count; i++) {
376  pointer_events.push_back(events[i]);
377  }
378 
379  return kSuccess;
380  }));
381 
382  g_autoptr(FlScrollingManager) manager = fl_scrolling_manager_new(engine, 0);
383 
384  size_t time_start = g_get_real_time();
385  fl_scrolling_manager_handle_zoom_begin(manager);
386  EXPECT_EQ(pointer_events.size(), 1u);
387  EXPECT_EQ(pointer_events[0].x, 0);
388  EXPECT_EQ(pointer_events[0].y, 0);
389  EXPECT_EQ(pointer_events[0].phase, kPanZoomStart);
390  EXPECT_GE(pointer_events[0].timestamp, time_start);
391  fl_scrolling_manager_handle_zoom_update(manager, 1.1);
392  EXPECT_EQ(pointer_events.size(), 2u);
393  EXPECT_EQ(pointer_events[1].x, 0);
394  EXPECT_EQ(pointer_events[1].y, 0);
395  EXPECT_EQ(pointer_events[1].phase, kPanZoomUpdate);
396  EXPECT_GE(pointer_events[1].timestamp, pointer_events[0].timestamp);
397  EXPECT_EQ(pointer_events[1].pan_x, 0);
398  EXPECT_EQ(pointer_events[1].pan_y, 0);
399  EXPECT_EQ(pointer_events[1].scale, 1.1);
400  EXPECT_EQ(pointer_events[1].rotation, 0);
401  fl_scrolling_manager_handle_rotation_begin(manager);
402  EXPECT_EQ(pointer_events.size(), 2u);
403  fl_scrolling_manager_handle_rotation_update(manager, 0.5);
404  EXPECT_EQ(pointer_events.size(), 3u);
405  EXPECT_EQ(pointer_events[2].x, 0);
406  EXPECT_EQ(pointer_events[2].y, 0);
407  EXPECT_EQ(pointer_events[2].phase, kPanZoomUpdate);
408  EXPECT_GE(pointer_events[2].timestamp, pointer_events[1].timestamp);
409  EXPECT_EQ(pointer_events[2].pan_x, 0);
410  EXPECT_EQ(pointer_events[2].pan_y, 0);
411  EXPECT_EQ(pointer_events[2].scale, 1.1);
412  EXPECT_EQ(pointer_events[2].rotation, 0.5);
413  fl_scrolling_manager_handle_zoom_end(manager);
414  EXPECT_EQ(pointer_events.size(), 3u);
415  fl_scrolling_manager_handle_rotation_update(manager, 1.0);
416  EXPECT_EQ(pointer_events.size(), 4u);
417  EXPECT_EQ(pointer_events[3].x, 0);
418  EXPECT_EQ(pointer_events[3].y, 0);
419  EXPECT_EQ(pointer_events[3].phase, kPanZoomUpdate);
420  EXPECT_GE(pointer_events[3].timestamp, pointer_events[2].timestamp);
421  EXPECT_EQ(pointer_events[3].pan_x, 0);
422  EXPECT_EQ(pointer_events[3].pan_y, 0);
423  EXPECT_EQ(pointer_events[3].scale, 1.1);
424  EXPECT_EQ(pointer_events[3].rotation, 1.0);
425  fl_scrolling_manager_handle_rotation_end(manager);
426  EXPECT_EQ(pointer_events.size(), 5u);
427  EXPECT_EQ(pointer_events[4].x, 0);
428  EXPECT_EQ(pointer_events[4].y, 0);
429  EXPECT_EQ(pointer_events[4].phase, kPanZoomEnd);
430  EXPECT_GE(pointer_events[4].timestamp, pointer_events[3].timestamp);
431 }
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Definition: fl_scrolling_manager.cc:235
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Definition: fl_scrolling_manager.cc:71
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Definition: fl_scrolling_manager.cc:220
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Definition: fl_scrolling_manager_test.cc:15
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