2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <dali/internal/event/events/touch-event-processor.h>
21 #if defined(DEBUG_ENABLED)
26 #include <dali/public-api/events/touch-data.h>
27 #include <dali/public-api/math/vector2.h>
28 #include <dali/public-api/signals/callback.h>
29 #include <dali/integration-api/debug.h>
30 #include <dali/integration-api/events/touch-event-integ.h>
31 #include <dali/internal/event/actors/actor-impl.h>
32 #include <dali/internal/event/actors/layer-impl.h>
33 #include <dali/internal/event/common/stage-impl.h>
34 #include <dali/internal/event/events/hit-test-algorithm-impl.h>
35 #include <dali/internal/event/events/multi-point-event-util.h>
36 #include <dali/internal/event/events/touch-data-impl.h>
37 #include <dali/internal/event/render-tasks/render-task-impl.h>
48 #if defined(DEBUG_ENABLED)
49 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_TOUCH_PROCESSOR" );
51 const char * TOUCH_POINT_STATE[TouchPoint::Last] =
61 #endif // defined(DEBUG_ENABLED)
65 * Recursively deliver events to the actor and its parents, until the event is consumed or the stage is reached.
67 Dali::Actor EmitTouchSignals( Dali::Actor actor, const TouchEvent& event, const Dali::TouchData& touchData )
69 Dali::Actor consumedActor;
73 Dali::Actor oldParent( actor.GetParent() );
75 Actor& actorImpl( GetImplementation(actor) );
77 bool consumed( false );
79 // Only emit the signal if the actor's touch signal has connections (or derived actor implementation requires touch).
80 if ( actorImpl.GetTouchRequired() )
82 consumed = actorImpl.EmitTouchEventSignal( event, touchData );
87 // One of this actor's listeners has consumed the event so set this actor as the consumed actor.
88 consumedActor = Dali::Actor( &actorImpl );
92 // The actor may have been removed/reparented during the signal callbacks.
93 Dali::Actor parent = actor.GetParent();
96 (parent == oldParent) )
98 // One of the actor's parents may consumed the event and they should be set as the consumed actor.
99 consumedActor = EmitTouchSignals( parent, event, touchData );
104 return consumedActor;
107 Dali::Actor AllocAndEmitTouchSignals( unsigned long time, Dali::Actor actor, const TouchPoint& point )
109 TouchEvent touchEvent( time );
110 IntrusivePtr< TouchData > touchData( new TouchData( time ) );
111 Dali::TouchData touchDataHandle( touchData.Get() );
113 touchEvent.points.push_back( point );
114 touchData->AddPoint( point );
116 return EmitTouchSignals( actor, touchEvent, touchDataHandle );
121 * Changes the state of the primary point to leave and emits the touch signals
123 Dali::Actor EmitTouchSignals( Actor* actor, RenderTask& renderTask, const TouchEvent& originalEvent, TouchPoint::State state )
125 TouchEvent touchEvent( originalEvent );
127 DALI_ASSERT_DEBUG( NULL != actor && "NULL actor pointer" );
130 TouchPoint& primaryPoint = touchEvent.points[0];
132 actor->ScreenToLocal( renderTask, primaryPoint.local.x, primaryPoint.local.y, primaryPoint.screen.x, primaryPoint.screen.y );
134 primaryPoint.hitActor = Dali::Actor(actor);
135 primaryPoint.state = state;
138 IntrusivePtr< TouchData > touchData( new TouchData( touchEvent.time ) );
139 touchData->SetPoints( touchEvent.points );
141 return EmitTouchSignals( Dali::Actor(actor), touchEvent, Dali::TouchData( touchData.Get() ) );
144 } // unnamed namespace
146 TouchEventProcessor::TouchEventProcessor( Stage& stage )
148 mLastPrimaryHitActor( MakeCallback( this, &TouchEventProcessor::OnObservedActorDisconnected ) ),
149 mLastConsumedActor(),
150 mTouchDownConsumedActor(),
153 DALI_LOG_TRACE_METHOD( gLogFilter );
156 TouchEventProcessor::~TouchEventProcessor()
158 DALI_LOG_TRACE_METHOD( gLogFilter );
161 void TouchEventProcessor::ProcessTouchEvent( const Integration::TouchEvent& event )
163 DALI_LOG_TRACE_METHOD( gLogFilter );
165 DALI_ASSERT_ALWAYS( !event.points.empty() && "Empty TouchEvent sent from Integration\n" );
167 Stage& stage = mStage;
169 PRINT_HIERARCHY(gLogFilter);
171 // 1) Check if it is an interrupted event - we should inform our last primary hit actor about this
172 // and emit the stage signal as well.
174 if ( event.points[0].state == TouchPoint::Interrupted )
176 Dali::Actor consumingActor;
177 TouchPoint currentPoint( event.points[0] );
179 Actor* lastPrimaryHitActor( mLastPrimaryHitActor.GetActor() );
180 if ( lastPrimaryHitActor )
182 Dali::Actor lastPrimaryHitActorHandle( lastPrimaryHitActor );
183 currentPoint.hitActor = lastPrimaryHitActorHandle;
185 consumingActor = AllocAndEmitTouchSignals( event.time, lastPrimaryHitActorHandle, currentPoint );
188 // If the last consumed actor was different to the primary hit actor then inform it as well (if it has not already been informed).
189 Actor* lastConsumedActor( mLastConsumedActor.GetActor() );
190 if ( lastConsumedActor &&
191 lastConsumedActor != lastPrimaryHitActor &&
192 lastConsumedActor != consumingActor )
194 Dali::Actor lastConsumedActorHandle( lastConsumedActor );
195 currentPoint.hitActor = lastConsumedActorHandle;
196 AllocAndEmitTouchSignals( event.time, lastConsumedActorHandle, currentPoint );
199 // Tell the touch-down consuming actor as well, if required
200 Actor* touchDownConsumedActor( mTouchDownConsumedActor.GetActor() );
201 if ( touchDownConsumedActor &&
202 touchDownConsumedActor != lastPrimaryHitActor &&
203 touchDownConsumedActor != lastConsumedActor &&
204 touchDownConsumedActor != consumingActor )
206 Dali::Actor touchDownConsumedActorHandle( touchDownConsumedActor );
208 currentPoint.hitActor = touchDownConsumedActorHandle;
209 AllocAndEmitTouchSignals( event.time, touchDownConsumedActorHandle, currentPoint );
212 mLastPrimaryHitActor.SetActor( NULL );
213 mLastConsumedActor.SetActor( NULL );
214 mTouchDownConsumedActor.SetActor( NULL );
215 mLastRenderTask.Reset();
217 currentPoint.hitActor.Reset();
219 TouchEvent touchEvent( event.time );
220 IntrusivePtr< TouchData > touchData( new TouchData( event.time ) );
221 Dali::TouchData touchDataHandle( touchData.Get() );
223 touchEvent.points.push_back( currentPoint );
224 touchData->AddPoint( currentPoint );
226 mStage.EmitTouchedSignal( touchEvent, touchDataHandle );
228 return; // No need for hit testing
232 TouchEvent touchEvent( event.time );
233 IntrusivePtr< TouchData > touchData( new TouchData( event.time ) );
234 Dali::TouchData touchDataHandle( touchData.Get() );
236 DALI_LOG_INFO( gLogFilter, Debug::Concise, "\n" );
237 DALI_LOG_INFO( gLogFilter, Debug::General, "Point(s): %d\n", event.GetPointCount() );
239 Dali::RenderTask currentRenderTask;
241 for ( TouchPointContainerConstIterator iter = event.points.begin(), beginIter = event.points.begin(), endIter = event.points.end(); iter != endIter; ++iter )
243 HitTestAlgorithm::Results hitTestResults;
244 HitTestAlgorithm::HitTest( stage, iter->screen, hitTestResults );
246 TouchPoint newPoint( iter->deviceId, iter->state, iter->screen.x, iter->screen.y, hitTestResults.actorCoordinates.x, hitTestResults.actorCoordinates.y );
247 newPoint.hitActor = hitTestResults.actor;
249 touchEvent.points.push_back( newPoint );
250 touchData->AddPoint( newPoint );
252 DALI_LOG_INFO( gLogFilter, Debug::General, " State(%s), Screen(%.0f, %.0f), HitActor(%p, %s), Local(%.2f, %.2f)\n",
253 TOUCH_POINT_STATE[iter->state], iter->screen.x, iter->screen.y,
254 ( hitTestResults.actor ? (void*)&hitTestResults.actor.GetBaseObject() : NULL ),
255 ( hitTestResults.actor ? hitTestResults.actor.GetName().c_str() : "" ),
256 hitTestResults.actorCoordinates.x, hitTestResults.actorCoordinates.y );
258 // Only set the currentRenderTask for the primary hit actor.
259 if ( iter == beginIter && hitTestResults.renderTask )
261 currentRenderTask = hitTestResults.renderTask;
265 // 3) Recursively deliver events to the actor and its parents, until the event is consumed or the stage is reached.
267 // Emit the touch signal
268 Dali::Actor consumedActor;
269 if ( currentRenderTask )
271 consumedActor = EmitTouchSignals( touchEvent.points[0].hitActor, touchEvent, touchDataHandle );
274 TouchPoint& primaryPoint = touchEvent.points[0];
275 Dali::Actor primaryHitActor = primaryPoint.hitActor;
276 TouchPoint::State primaryPointState = primaryPoint.state;
278 DALI_LOG_INFO( gLogFilter, Debug::Concise, "PrimaryHitActor: (%p) %s\n", primaryPoint.hitActor ? (void*)&primaryPoint.hitActor.GetBaseObject() : NULL, primaryPoint.hitActor ? primaryPoint.hitActor.GetName().c_str() : "" );
279 DALI_LOG_INFO( gLogFilter, Debug::Concise, "ConsumedActor: (%p) %s\n", consumedActor ? (void*)&consumedActor.GetBaseObject() : NULL, consumedActor ? consumedActor.GetName().c_str() : "" );
281 if ( ( primaryPointState == TouchPoint::Down ) &&
282 ( touchEvent.GetPointCount() == 1 ) &&
283 ( consumedActor && consumedActor.OnStage() ) )
285 mTouchDownConsumedActor.SetActor( &GetImplementation( consumedActor ) );
288 // 4) Check if the last primary hit actor requires a leave event and if it was different to the current primary
289 // hit actor. Also process the last consumed actor in the same manner.
291 Actor* lastPrimaryHitActor( mLastPrimaryHitActor.GetActor() );
292 Actor* lastConsumedActor( mLastConsumedActor.GetActor() );
293 if( (primaryPointState == TouchPoint::Motion) || (primaryPointState == TouchPoint::Up) || (primaryPointState == TouchPoint::Stationary) )
295 if ( mLastRenderTask )
297 Dali::Actor leaveEventConsumer;
298 RenderTask& lastRenderTaskImpl( GetImplementation( mLastRenderTask ) );
300 if( lastPrimaryHitActor &&
301 lastPrimaryHitActor != primaryHitActor &&
302 lastPrimaryHitActor != consumedActor )
304 if( lastPrimaryHitActor->IsHittable() && IsActuallySensitive( lastPrimaryHitActor ) )
306 if ( lastPrimaryHitActor->GetLeaveRequired() )
308 DALI_LOG_INFO( gLogFilter, Debug::Concise, "LeaveActor(Hit): (%p) %s\n", (void*)lastPrimaryHitActor, lastPrimaryHitActor->GetName().c_str() );
309 leaveEventConsumer = EmitTouchSignals( mLastPrimaryHitActor.GetActor(), lastRenderTaskImpl, touchEvent, TouchPoint::Leave );
314 // At this point mLastPrimaryHitActor was touchable and sensitive in the previous touch event process but is not in the current one.
315 // An interrupted event is send to allow some actors to go back to their original state (i.e. Button controls)
316 DALI_LOG_INFO( gLogFilter, Debug::Concise, "InterruptedActor(Hit): (%p) %s\n", (void*)lastPrimaryHitActor, lastPrimaryHitActor->GetName().c_str() );
317 leaveEventConsumer = EmitTouchSignals( mLastPrimaryHitActor.GetActor(), lastRenderTaskImpl, touchEvent, TouchPoint::Interrupted );
321 // Check if the motion event has been consumed by another actor's listener. In this case, the previously
322 // consumed actor's listeners may need to be informed (through a leave event).
323 // Further checks here to ensure we do not signal the same actor twice for the same event.
324 if ( lastConsumedActor &&
325 lastConsumedActor != consumedActor &&
326 lastConsumedActor != lastPrimaryHitActor &&
327 lastConsumedActor != primaryHitActor &&
328 lastConsumedActor != leaveEventConsumer )
330 if( lastConsumedActor->IsHittable() && IsActuallySensitive( lastConsumedActor ) )
332 if( lastConsumedActor->GetLeaveRequired() )
334 DALI_LOG_INFO( gLogFilter, Debug::Concise, "LeaveActor(Consume): (%p) %s\n", (void*)lastConsumedActor, lastConsumedActor->GetName().c_str() );
335 EmitTouchSignals( lastConsumedActor, lastRenderTaskImpl, touchEvent, TouchPoint::Leave );
340 // At this point mLastConsumedActor was touchable and sensitive in the previous touch event process but is not in the current one.
341 // An interrupted event is send to allow some actors to go back to their original state (i.e. Button controls)
342 DALI_LOG_INFO( gLogFilter, Debug::Concise, "InterruptedActor(Consume): (%p) %s\n", (void*)lastConsumedActor, lastConsumedActor->GetName().c_str() );
343 EmitTouchSignals( mLastConsumedActor.GetActor(), lastRenderTaskImpl, touchEvent, TouchPoint::Interrupted );
349 // 5) If our primary point is an Up event, then the primary point (in multi-touch) will change next
350 // time so set our last primary actor to NULL. Do the same to the last consumed actor as well.
352 if ( primaryPointState == TouchPoint::Up )
354 mLastPrimaryHitActor.SetActor( NULL );
355 mLastConsumedActor.SetActor( NULL );
356 mLastRenderTask.Reset();
360 // The primaryHitActor may have been removed from the stage so ensure it is still on the stage before setting members.
361 if ( primaryHitActor && primaryHitActor.OnStage() )
363 mLastPrimaryHitActor.SetActor( &GetImplementation( primaryHitActor ) );
365 // Only observe the consumed actor if we have a primaryHitActor (check if it is still on stage).
366 if ( consumedActor && consumedActor.OnStage() )
368 mLastConsumedActor.SetActor( &GetImplementation( consumedActor ) );
372 mLastConsumedActor.SetActor( NULL );
375 mLastRenderTask = currentRenderTask;
379 mLastPrimaryHitActor.SetActor( NULL );
380 mLastConsumedActor.SetActor( NULL );
381 mLastRenderTask.Reset();
385 // 6) Emit an interrupted event to the touch-down actor if it hasn't consumed the up and
386 // emit the stage touched event if required.
388 if ( touchEvent.GetPointCount() == 1 ) // Only want the first touch and the last release
390 switch ( primaryPointState )
394 Actor* touchDownConsumedActor( mTouchDownConsumedActor.GetActor() );
395 if ( touchDownConsumedActor &&
396 touchDownConsumedActor != consumedActor &&
397 touchDownConsumedActor != lastPrimaryHitActor &&
398 touchDownConsumedActor != lastConsumedActor )
400 Dali::Actor touchDownConsumedActorHandle( touchDownConsumedActor );
402 TouchPoint currentPoint = touchData->GetPoint( 0 );
403 currentPoint.hitActor = touchDownConsumedActorHandle;
404 currentPoint.state = TouchPoint::Interrupted;
406 AllocAndEmitTouchSignals( event.time, touchDownConsumedActorHandle, currentPoint );
409 mTouchDownConsumedActor.SetActor( NULL );
411 // No break, Fallthrough
413 case TouchPoint::Down:
415 mStage.EmitTouchedSignal( touchEvent, touchDataHandle );
419 case TouchPoint::Motion:
420 case TouchPoint::Leave:
421 case TouchPoint::Stationary:
422 case TouchPoint::Interrupted:
423 case TouchPoint::Last:
432 void TouchEventProcessor::OnObservedActorDisconnected( Actor* actor )
434 if ( actor == mLastPrimaryHitActor.GetActor() )
436 Dali::Actor handle( actor );
437 TouchEvent touchEvent( 0 );
438 touchEvent.points.push_back( TouchPoint( 0, TouchPoint::Interrupted, 0.0f, 0.0f ) );
439 touchEvent.points[0].hitActor = handle;
441 IntrusivePtr< TouchData > touchData( new TouchData );
442 touchData->SetPoints( touchEvent.points );
444 Dali::TouchData touchDataHandle( touchData.Get() );
445 Dali::Actor eventConsumer = EmitTouchSignals( handle, touchEvent, touchDataHandle );
447 if ( mLastConsumedActor.GetActor() != eventConsumer )
449 EmitTouchSignals( Dali::Actor( mLastConsumedActor.GetActor() ), touchEvent, touchDataHandle );
452 // Do not set mLastPrimaryHitActor to NULL we may be iterating through its observers
454 mLastConsumedActor.SetActor( NULL );
455 mLastRenderTask.Reset();
459 } // namespace Internal