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1 /*
2  * Copyright (C) 2023 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #include <map>
17 #include "accessibility_screen_touch.h"
18 #include "accessibility_circle_drawing_manager.h"
19 #include "accessible_ability_manager_service.h"
20 #include "hilog_wrapper.h"
21 #include "utils.h"
22 
23 namespace OHOS {
24 namespace Accessibility {
25 
26 constexpr int32_t POINTER_COUNT_1 = 1;
27 
28 constexpr uint32_t CLICK_RESPONSE_DELAY_SHORT = 0;
29 constexpr uint32_t CLICK_RESPONSE_DELAY_MEDIUM = 1;
30 constexpr uint32_t CLICK_RESPONSE_DELAY_LONG = 2;
31 
32 constexpr uint32_t CLICK_RESPONSE_TIME_SHORT = 0; // ms
33 constexpr uint32_t CLICK_RESPONSE_TIME_MEDIUM = 300; // ms
34 constexpr uint32_t CLICK_RESPONSE_TIME_LONG = 600; // ms
35 
36 constexpr uint32_t IGNORE_REPEAT_CLICK_SHORTEST = 0;
37 constexpr uint32_t IGNORE_REPEAT_CLICK_SHORT = 1;
38 constexpr uint32_t IGNORE_REPEAT_CLICK_MEDIUM = 2;
39 constexpr uint32_t IGNORE_REPEAT_CLICK_LONG = 3;
40 constexpr uint32_t IGNORE_REPEAT_CLICK_LONGEST = 4;
41 
42 constexpr uint32_t IGNORE_REPEAT_CLICK_TIME_SHORTEST = 100; // ms
43 constexpr uint32_t IGNORE_REPEAT_CLICK_TIME_SHORT = 400; // ms
44 constexpr uint32_t IGNORE_REPEAT_CLICK_TIME_MEDIUM = 700; // ms
45 constexpr uint32_t IGNORE_REPEAT_CLICK_TIME_LONG = 1000; // ms
46 constexpr uint32_t IGNORE_REPEAT_CLICK_TIME_LONGEST = 1300; // ms
47 
48 constexpr uint32_t CIRCLE_ANGLE = 360;
49 #ifdef OHOS_BUILD_ENABLE_DISPLAY_MANAGER
50 constexpr uint32_t START_ANGLE_PORTRAIT = -90;
51 constexpr uint32_t START_ANGLE_LANDSCAPE = 180;
52 constexpr uint32_t START_ANGLE_PORTRAIT_INVERTED = 90;
53 constexpr uint32_t START_ANGLE_LANDSCAPE_INVERTED = 0;
54 #endif
55 constexpr uint32_t NUMBER_10 = 10;
56 
57 constexpr float TOUCH_SLOP = 8.0f;
58 
59 const std::map<uint32_t, uint32_t> CLICK_RESPONSE_TIME_MAP = {
60     {CLICK_RESPONSE_DELAY_SHORT, CLICK_RESPONSE_TIME_SHORT},
61     {CLICK_RESPONSE_DELAY_MEDIUM, CLICK_RESPONSE_TIME_MEDIUM},
62     {CLICK_RESPONSE_DELAY_LONG, CLICK_RESPONSE_TIME_LONG}
63 };
64 
65 const std::map<uint32_t, uint32_t> IGNORE_REPEAT_CLICK_TIME_MAP = {
66     {IGNORE_REPEAT_CLICK_SHORTEST, IGNORE_REPEAT_CLICK_TIME_SHORTEST},
67     {IGNORE_REPEAT_CLICK_SHORT, IGNORE_REPEAT_CLICK_TIME_SHORT},
68     {IGNORE_REPEAT_CLICK_MEDIUM, IGNORE_REPEAT_CLICK_TIME_MEDIUM},
69     {IGNORE_REPEAT_CLICK_LONG, IGNORE_REPEAT_CLICK_TIME_LONG},
70     {IGNORE_REPEAT_CLICK_LONGEST, IGNORE_REPEAT_CLICK_TIME_LONGEST}
71 };
72 
73 int64_t AccessibilityScreenTouch::lastUpTime = 0; // global last up time
74 
ScreenTouchHandler(const std::shared_ptr<AppExecFwk::EventRunner> & runner,AccessibilityScreenTouch & server)75 ScreenTouchHandler::ScreenTouchHandler(const std::shared_ptr<AppExecFwk::EventRunner> &runner,
76     AccessibilityScreenTouch &server) : AppExecFwk::EventHandler(runner), server_(server)
77 {
78 }
79 
AccessibilityScreenTouch()80 AccessibilityScreenTouch::AccessibilityScreenTouch()
81 {
82     HILOG_DEBUG();
83     // get from account data directly
84     sptr<AccessibilityAccountData> accountData =
85         Singleton<AccessibleAbilityManagerService>::GetInstance().GetCurrentAccountData();
86     clickResponseTime_ = accountData->GetConfig()->GetClickResponseTime();
87     ignoreRepeatClickState_ = accountData->GetConfig()->GetIgnoreRepeatClickState();
88     ignoreRepeatClickTime_ = accountData->GetConfig()->GetIgnoreRepeatClickTime();
89 
90     if (clickResponseTime_ > 0 && ignoreRepeatClickState_ == true) {
91         currentState_ = BOTH_RESPONSE_DELAY_IGNORE_REPEAT_CLICK;
92     } else if (clickResponseTime_ > 0) {
93         currentState_ = CLICK_RESPONSE_DELAY_STATE;
94     } else if (ignoreRepeatClickState_ == true) {
95         currentState_ = IGNORE_REPEAT_CLICK_STATE;
96     } else {
97         currentState_ = DEFAULT_STATE;
98     }
99 
100     lastUpTime_ = lastUpTime;
101 
102     runner_ = Singleton<AccessibleAbilityManagerService>::GetInstance().GetMainRunner();
103     if (!runner_) {
104         HILOG_ERROR("get runner failed");
105         return;
106     }
107     handler_ = std::make_shared<ScreenTouchHandler>(runner_, *this);
108     if (!handler_) {
109         HILOG_ERROR("create event handler failed");
110         return;
111     }
112 }
113 
ProcessEvent(const AppExecFwk::InnerEvent::Pointer & event)114 void ScreenTouchHandler::ProcessEvent(const AppExecFwk::InnerEvent::Pointer &event)
115 {
116     HILOG_DEBUG();
117     switch (event->GetInnerEventId()) {
118         case AccessibilityScreenTouch::FINGER_DOWN_DELAY_MSG:
119             server_.SendInterceptedEvent();
120             break;
121         default:
122             break;
123     }
124 }
125 
~AccessibilityScreenTouch()126 AccessibilityScreenTouch::~AccessibilityScreenTouch()
127 {
128     lastUpTime = lastUpTime_;
129     if (drawCircleThread_ && drawCircleThread_->joinable()) {
130         drawCircleThread_->join();
131     }
132     drawCircleThread_ = nullptr;
133     AccessibilityCircleDrawingManager::DeleteInstance();
134 }
135 
SendInterceptedEvent()136 void AccessibilityScreenTouch::SendInterceptedEvent()
137 {
138     HILOG_DEBUG();
139     isStopDrawCircle_ = true;
140 
141     if (cachedDownPointerEvents_.empty()) {
142         HILOG_ERROR("Cached down pointer event is empty!");
143         return;
144     }
145 
146     for (auto iter = cachedDownPointerEvents_.begin(); iter != cachedDownPointerEvents_.end(); ++iter) {
147         iter->SetActionTime(Utils::GetSystemTime() * US_TO_MS);
148         EventTransmission::OnPointerEvent(*iter);
149     }
150 }
151 
GetRealClickResponseTime()152 uint32_t AccessibilityScreenTouch::GetRealClickResponseTime()
153 {
154     auto iter = CLICK_RESPONSE_TIME_MAP.find(clickResponseTime_);
155     if (iter != CLICK_RESPONSE_TIME_MAP.end()) {
156         return iter->second;
157     }
158 
159     return CLICK_RESPONSE_TIME_MAP.at(CLICK_RESPONSE_DELAY_SHORT);
160 }
161 
GetRealIgnoreRepeatClickTime()162 uint32_t AccessibilityScreenTouch::GetRealIgnoreRepeatClickTime()
163 {
164     auto iter = IGNORE_REPEAT_CLICK_TIME_MAP.find(ignoreRepeatClickTime_);
165     if (iter != IGNORE_REPEAT_CLICK_TIME_MAP.end()) {
166         return iter->second;
167     }
168 
169     return IGNORE_REPEAT_CLICK_TIME_MAP.at(IGNORE_REPEAT_CLICK_SHORTEST);
170 }
171 
GetRealIgnoreRepeatClickState()172 bool AccessibilityScreenTouch::GetRealIgnoreRepeatClickState()
173 {
174     return ignoreRepeatClickState_;
175 }
176 
ConversionCoordinates(MMI::PointerEvent::PointerItem & pointerItem)177 void AccessibilityScreenTouch::ConversionCoordinates(MMI::PointerEvent::PointerItem &pointerItem)
178 {
179 #ifdef OHOS_BUILD_ENABLE_DISPLAY_MANAGER
180     AccessibilityDisplayManager &displayMgr = Singleton<AccessibilityDisplayManager>::GetInstance();
181     int32_t displayWidth = displayMgr.GetWidth();
182     int32_t displayHeight = displayMgr.GetHeight();
183     int32_t originalX = pointerItem.GetDisplayX();
184     int32_t originalY = pointerItem.GetDisplayY();
185 
186     OHOS::Rosen::DisplayOrientation orientation = displayMgr.GetOrientation();
187     switch (orientation) {
188         case OHOS::Rosen::DisplayOrientation::PORTRAIT:
189             circleCenterPhysicalX_ = originalX;
190             circleCenterPhysicalY_ = originalY;
191             startAngle_ = START_ANGLE_PORTRAIT;
192             break;
193         case OHOS::Rosen::DisplayOrientation::LANDSCAPE:
194             circleCenterPhysicalX_ = originalY;
195             circleCenterPhysicalY_ = displayWidth - originalX;
196             startAngle_ = START_ANGLE_LANDSCAPE;
197             break;
198         case OHOS::Rosen::DisplayOrientation::PORTRAIT_INVERTED:
199             circleCenterPhysicalX_ = displayWidth - originalX;
200             circleCenterPhysicalY_ = displayHeight - originalY;
201             startAngle_ = START_ANGLE_PORTRAIT_INVERTED;
202             break;
203         case OHOS::Rosen::DisplayOrientation::LANDSCAPE_INVERTED:
204             circleCenterPhysicalX_ = displayHeight - originalY;
205             circleCenterPhysicalY_ = originalX;
206             startAngle_ = START_ANGLE_LANDSCAPE_INVERTED;
207             break;
208         default:
209             break;
210     }
211 #endif
212 }
213 
DrawCircleProgress()214 void AccessibilityScreenTouch::DrawCircleProgress()
215 {
216     HILOG_DEBUG();
217 
218     AccessibilityCircleDrawingManager::GetInstance()->DrawPointer(circleCenterPhysicalX_,
219         circleCenterPhysicalY_, 0, screenId_, startAngle_);
220     AccessibilityCircleDrawingManager::GetInstance()->UpdatePointerVisible(true);
221     uint32_t times = GetRealClickResponseTime() / NUMBER_10;
222     uint32_t step = CIRCLE_ANGLE / times;
223     uint32_t time = 0;
224     while (time < times && isStopDrawCircle_ == false) {
225         AccessibilityCircleDrawingManager::GetInstance()->DrawPointer(circleCenterPhysicalX_,
226             circleCenterPhysicalY_, step * time, screenId_, startAngle_);
227         time++;
228         std::this_thread::yield();
229         std::this_thread::sleep_for(std::chrono::milliseconds(NUMBER_10));
230     }
231 
232     AccessibilityCircleDrawingManager::GetInstance()->UpdatePointerVisible(false);
233 }
234 
HandleResponseDelayStateInnerDown(MMI::PointerEvent & event)235 void AccessibilityScreenTouch::HandleResponseDelayStateInnerDown(MMI::PointerEvent &event)
236 {
237     HILOG_DEBUG();
238     MMI::PointerEvent::PointerItem pointerItem;
239     if (!event.GetPointerItem(event.GetPointerId(), pointerItem)) {
240         HILOG_WARN("get GetPointerItem %{public}d failed", event.GetPointerId());
241     }
242 
243     if (event.GetPointerIds().size() > POINTER_COUNT_1) {
244         if (cachedDownPointerEvents_.empty()) {
245             HILOG_ERROR("cached down pointer event is empty!");
246             return;
247         }
248         if (isMoveBeyondThreshold_ == true) {
249             cachedDownPointerEvents_.push_back(event);
250             EventTransmission::OnPointerEvent(event);
251             return;
252         } else if (isStopDrawCircle_ == true) {
253             return;
254         } else {
255             cachedDownPointerEvents_.push_back(event);
256             return;
257         }
258     }
259 
260     screenId_ = event.GetTargetDisplayId();
261     startTime_ = event.GetActionTime();
262     startPointer_ = std::make_shared<MMI::PointerEvent::PointerItem>(pointerItem);
263     isMoveBeyondThreshold_ = false;
264 
265     ConversionCoordinates(pointerItem);
266     isStopDrawCircle_ = false;
267     if (drawCircleThread_ && drawCircleThread_->joinable()) {
268         drawCircleThread_->join();
269     }
270 
271     drawCircleThread_ = nullptr;
272     drawCircleThread_ = std::make_shared<std::thread>([this] {this->DrawCircleProgress();});
273     if (drawCircleThread_ == nullptr) {
274         HILOG_ERROR("create draw circle progress fail");
275     }
276 
277     handler_->RemoveEvent(FINGER_DOWN_DELAY_MSG);
278     cachedDownPointerEvents_.clear();
279     cachedDownPointerEvents_.push_back(event);
280     handler_->SendEvent(FINGER_DOWN_DELAY_MSG, 0, static_cast<int32_t>(GetRealClickResponseTime()));
281 }
282 
HandleResponseDelayStateInnerMove(MMI::PointerEvent & event)283 void AccessibilityScreenTouch::HandleResponseDelayStateInnerMove(MMI::PointerEvent &event)
284 {
285     HILOG_DEBUG();
286     if (cachedDownPointerEvents_.empty()) {
287         HILOG_ERROR("cached down pointer event is empty!");
288         return;
289     }
290 
291     if (isMoveBeyondThreshold_ == true) {
292         handler_->RemoveEvent(FINGER_DOWN_DELAY_MSG);
293         EventTransmission::OnPointerEvent(event);
294         return;
295     }
296 
297     if (startPointer_ == nullptr) {
298         return;
299     }
300 
301     if (event.GetPointerId() != startPointer_->GetPointerId()) {
302         if (isStopDrawCircle_ == true) {
303             EventTransmission::OnPointerEvent(event);
304         }
305         return;
306     }
307 
308     MMI::PointerEvent::PointerItem pointerItem;
309     if (!event.GetPointerItem(event.GetPointerId(), pointerItem)) {
310         HILOG_WARN("get GetPointerItem %{public}d failed", event.GetPointerId());
311     }
312 
313     float offsetX = startPointer_->GetDisplayX() - pointerItem.GetDisplayX();
314     float offsetY = startPointer_->GetDisplayY() - pointerItem.GetDisplayY();
315     double duration = hypot(offsetX, offsetY);
316     if (duration > TOUCH_SLOP) {
317         handler_->RemoveEvent(FINGER_DOWN_DELAY_MSG);
318         if (isStopDrawCircle_ != true && !cachedDownPointerEvents_.empty()) {
319             for (auto iter = cachedDownPointerEvents_.begin(); iter != cachedDownPointerEvents_.end(); ++iter) {
320                 iter->SetActionTime(Utils::GetSystemTime() * US_TO_MS);
321                 EventTransmission::OnPointerEvent(*iter);
322             }
323         }
324         EventTransmission::OnPointerEvent(event);
325         isMoveBeyondThreshold_ = true;
326         isStopDrawCircle_ = true;
327         return;
328     }
329 
330     if (isStopDrawCircle_ != true) {
331         ConversionCoordinates(pointerItem);
332         return;
333     }
334 
335     EventTransmission::OnPointerEvent(event);
336 }
337 
HandleResponseDelayStateInnerUp(MMI::PointerEvent & event)338 void AccessibilityScreenTouch::HandleResponseDelayStateInnerUp(MMI::PointerEvent &event)
339 {
340     HILOG_DEBUG();
341 
342     if (cachedDownPointerEvents_.empty()) {
343         HILOG_ERROR("cached down pointer event is empty!");
344         handler_->RemoveEvent(FINGER_DOWN_DELAY_MSG);
345         isStopDrawCircle_ = true;
346         return;
347     }
348 
349     if (isStopDrawCircle_ == true) {
350         for (auto iter = cachedDownPointerEvents_.begin(); iter != cachedDownPointerEvents_.end(); ++iter) {
351             if (iter->GetPointerId() == event.GetPointerId()) {
352                 EventTransmission::OnPointerEvent(event);
353             }
354         }
355         if (event.GetPointerIds().size() == POINTER_COUNT_1) {
356             cachedDownPointerEvents_.clear();
357         }
358         return;
359     }
360 
361     if (startPointer_ != nullptr && event.GetPointerId() == startPointer_->GetPointerId()) {
362         handler_->RemoveEvent(FINGER_DOWN_DELAY_MSG);
363         isStopDrawCircle_ = true;
364         cachedDownPointerEvents_.clear();
365     } else {
366         auto iter = std::find_if(cachedDownPointerEvents_.begin(), cachedDownPointerEvents_.end(),
367             [&](const MMI::PointerEvent &e) {
368                 return e.GetPointerId() == event.GetPointerId();
369             });
370         if (iter != cachedDownPointerEvents_.end()) {
371             cachedDownPointerEvents_.erase(iter);
372         }
373     }
374 }
375 
HandleResponseDelayState(MMI::PointerEvent & event)376 void AccessibilityScreenTouch::HandleResponseDelayState(MMI::PointerEvent &event)
377 {
378     HILOG_DEBUG();
379 
380     switch (event.GetPointerAction()) {
381         case MMI::PointerEvent::POINTER_ACTION_DOWN:
382             HandleResponseDelayStateInnerDown(event);
383             break;
384         case MMI::PointerEvent::POINTER_ACTION_MOVE:
385             HandleResponseDelayStateInnerMove(event);
386             break;
387         case MMI::PointerEvent::POINTER_ACTION_UP:
388             HandleResponseDelayStateInnerUp(event);
389             break;
390         default:
391             EventTransmission::OnPointerEvent(event);
392             break;
393     }
394 }
395 
HandleIgnoreRepeatClickStateInnerDown(MMI::PointerEvent & event)396 void AccessibilityScreenTouch::HandleIgnoreRepeatClickStateInnerDown(MMI::PointerEvent &event)
397 {
398     HILOG_DEBUG();
399 
400     int64_t downTime = event.GetActionTime();
401     if ((event.GetPointerIds().size() == POINTER_COUNT_1) &&
402         ((downTime - lastUpTime_) / US_TO_MS < GetRealIgnoreRepeatClickTime())) {
403         isInterceptClick_ = true;
404         return;
405     } else if ((event.GetPointerIds().size() > POINTER_COUNT_1) && (isInterceptClick_ == true)) {
406         return;
407     }
408 
409     EventTransmission::OnPointerEvent(event);
410     isInterceptClick_ = false;
411 }
412 
HandleIgnoreRepeatClickStateInnerMove(MMI::PointerEvent & event)413 void AccessibilityScreenTouch::HandleIgnoreRepeatClickStateInnerMove(MMI::PointerEvent &event)
414 {
415     HILOG_DEBUG();
416 
417     if (isInterceptClick_ == false) {
418         EventTransmission::OnPointerEvent(event);
419     }
420 }
421 
HandleIgnoreRepeatClickStateInnerUp(MMI::PointerEvent & event)422 void AccessibilityScreenTouch::HandleIgnoreRepeatClickStateInnerUp(MMI::PointerEvent &event)
423 {
424     HILOG_DEBUG();
425 
426     if (isInterceptClick_ == false) {
427         EventTransmission::OnPointerEvent(event);
428         if (event.GetPointerIds().size() == POINTER_COUNT_1) {
429             lastUpTime_ = event.GetActionTime();
430         }
431     }
432 }
433 
HandleIgnoreRepeatClickState(MMI::PointerEvent & event)434 void AccessibilityScreenTouch::HandleIgnoreRepeatClickState(MMI::PointerEvent &event)
435 {
436     HILOG_DEBUG();
437     switch (event.GetPointerAction()) {
438         case MMI::PointerEvent::POINTER_ACTION_DOWN:
439             HandleIgnoreRepeatClickStateInnerDown(event);
440             break;
441         case MMI::PointerEvent::POINTER_ACTION_MOVE:
442             HandleIgnoreRepeatClickStateInnerMove(event);
443             break;
444         case MMI::PointerEvent::POINTER_ACTION_UP:
445             HandleIgnoreRepeatClickStateInnerUp(event);
446             break;
447         default:
448             EventTransmission::OnPointerEvent(event);
449             break;
450     }
451 }
452 
HandleBothStateInnerDown(MMI::PointerEvent & event)453 void AccessibilityScreenTouch::HandleBothStateInnerDown(MMI::PointerEvent &event)
454 {
455     HILOG_DEBUG();
456 
457     int64_t downTime = event.GetActionTime();
458     if ((event.GetPointerIds().size() == POINTER_COUNT_1) &&
459         ((downTime - lastUpTime_) / US_TO_MS < GetRealIgnoreRepeatClickTime())) {
460         isInterceptClick_ = true;
461         return;
462     } else if ((event.GetPointerIds().size() > POINTER_COUNT_1) && (isInterceptClick_ == true)) {
463         return;
464     }
465 
466     isInterceptClick_ = false;
467 
468     HandleResponseDelayStateInnerDown(event);
469 }
470 
HandleBothStateInnerMove(MMI::PointerEvent & event)471 void AccessibilityScreenTouch::HandleBothStateInnerMove(MMI::PointerEvent &event)
472 {
473     HILOG_DEBUG();
474 
475     if (isInterceptClick_ == true) {
476         return;
477     }
478 
479     HandleResponseDelayStateInnerMove(event);
480 }
481 
HandleBothStateInnerUp(MMI::PointerEvent & event)482 void AccessibilityScreenTouch::HandleBothStateInnerUp(MMI::PointerEvent &event)
483 {
484     HILOG_DEBUG();
485 
486     if (isInterceptClick_ == true) {
487         return;
488     }
489 
490     if (event.GetPointerIds().size() == POINTER_COUNT_1) {
491         lastUpTime_ = event.GetActionTime();
492     }
493 
494     HandleResponseDelayStateInnerUp(event);
495 }
496 
HandleBothState(MMI::PointerEvent & event)497 void AccessibilityScreenTouch::HandleBothState(MMI::PointerEvent &event)
498 {
499     HILOG_DEBUG();
500     switch (event.GetPointerAction()) {
501         case MMI::PointerEvent::POINTER_ACTION_DOWN:
502             HandleBothStateInnerDown(event);
503             break;
504         case MMI::PointerEvent::POINTER_ACTION_MOVE:
505             HandleBothStateInnerMove(event);
506             break;
507         case MMI::PointerEvent::POINTER_ACTION_UP:
508             HandleBothStateInnerUp(event);
509             break;
510         default:
511             EventTransmission::OnPointerEvent(event);
512             break;
513     }
514 }
515 
Clear()516 void AccessibilityScreenTouch::Clear()
517 {
518     isMoveBeyondThreshold_ = false;
519     isInterceptClick_ = false;
520     startPointer_ = nullptr;
521 }
522 
OnPointerEvent(MMI::PointerEvent & event)523 bool AccessibilityScreenTouch::OnPointerEvent(MMI::PointerEvent &event)
524 {
525     HILOG_DEBUG();
526     MMI::PointerEvent::PointerItem pointerItem;
527     if (!event.GetPointerItem(event.GetPointerId(), pointerItem)) {
528         HILOG_WARN("get GetPointerItem %{public}d failed", event.GetPointerId());
529         return false;
530     }
531     if (pointerItem.GetToolType() == MMI::PointerEvent::TOOL_TYPE_KNUCKLE) {
532         EventTransmission::OnPointerEvent(event);
533         return false;
534     }
535 
536     if (event.GetSourceType() != MMI::PointerEvent::SOURCE_TYPE_TOUCHSCREEN) {
537         EventTransmission::OnPointerEvent(event);
538         return false;
539     }
540 
541     if (event.GetPointerAction() == MMI::PointerEvent::POINTER_ACTION_CANCEL) {
542         Clear();
543         return true;
544     }
545 
546     switch (currentState_) {
547         case ScreenTouchState::CLICK_RESPONSE_DELAY_STATE:
548             HandleResponseDelayState(event);
549             break;
550         case ScreenTouchState::IGNORE_REPEAT_CLICK_STATE:
551             HandleIgnoreRepeatClickState(event);
552             break;
553         case ScreenTouchState::BOTH_RESPONSE_DELAY_IGNORE_REPEAT_CLICK:
554             HandleBothState(event);
555             break;
556         case ScreenTouchState::DEFAULT_STATE:
557         default:
558             EventTransmission::OnPointerEvent(event);
559     }
560 
561     return true;
562 }
563 } // namespace Accessibility
564 } // namespace OHOS