2 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 // Licensed under the Flora License, Version 1.0 (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://floralicense.org/license/
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.
18 #include <dali/internal/event/events/mouse-wheel-event-processor.h>
21 #include <dali/public-api/events/mouse-wheel-event.h>
22 #include <dali/public-api/events/hit-test-algorithm.h>
23 #include <dali/public-api/math/vector2.h>
24 #include <dali/integration-api/events/mouse-wheel-event-integ.h>
25 #include <dali/internal/event/common/stage-impl.h>
26 #include <dali/internal/event/actors/actor-impl.h>
37 #if defined(DEBUG_ENABLED)
38 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_MOUSE_WHEEL_PROCESSOR");
42 * Recursively deliver events to the actor and its parents, until the event is consumed or the stage is reached.
44 Dali::Actor EmitMouseWheelSignals( Dali::Actor actor, const MouseWheelEvent& event )
46 Dali::Actor consumedActor;
50 Dali::Actor oldParent( actor.GetParent() );
52 Actor& actorImpl( GetImplementation(actor) );
54 bool consumed( false );
56 // Only do the conversion and emit the signal if the actor's mouse wheel signal has connections.
57 if ( actorImpl.GetMouseWheelEventRequired() )
59 // Emit the signal to the parent
60 consumed = actorImpl.EmitMouseWheelEventSignal( event );
65 // One of this actor's listeners has consumed the event so set this actor as the consumed actor.
66 consumedActor = Dali::Actor( &actorImpl );
70 // The actor may have been removed/reparented during the signal callbacks.
71 Dali::Actor parent = actor.GetParent();
74 (parent == oldParent) )
76 // One of the actor's parents may consumed the event and they should be set as the consumed actor.
77 consumedActor = EmitMouseWheelSignals( parent, event );
86 * The function to be used in the hit-test algorithm to check whether the actor is mouse wheelable.
88 bool IsActorMouseWheelableFunction(Dali::Actor actor, Dali::HitTestAlgorithm::TraverseType type)
90 bool hittable = false;
94 case Dali::HitTestAlgorithm::CHECK_ACTOR:
96 if( GetImplementation(actor).GetMouseWheelEventRequired() && // Does the Application or derived actor type require a mouse wheel event?
97 GetImplementation(actor).IsHittable() )
103 case Dali::HitTestAlgorithm::DESCEND_ACTOR_TREE:
105 if( actor.IsVisible() ) // Actor is visible, if not visible then none of its children are visible.
120 } // unnamed namespace
123 MouseWheelEventProcessor::MouseWheelEventProcessor(Stage& stage)
128 MouseWheelEventProcessor::~MouseWheelEventProcessor()
132 void MouseWheelEventProcessor::ProcessMouseWheelEvent(const Integration::MouseWheelEvent& event)
134 Stage& stage = mStage;
135 MouseWheelEvent mouseWheelEvent( event.direction, event.modifiers, event.point, event.z, event.timeStamp );
137 HitTestAlgorithm::Results hitTestResults;
138 HitTestAlgorithm::HitTest( Dali::Stage(&stage), event.point, hitTestResults, IsActorMouseWheelableFunction );
140 DALI_LOG_INFO( gLogFilter, Debug::General, " Screen(%.0f, %.0f), HitActor(%p, %s), Local(%.2f, %.2f)\n",
141 event.point.x, event.point.y,
142 ( hitTestResults.actor ? (void*)&hitTestResults.actor.GetBaseObject() : NULL ),
143 ( hitTestResults.actor ? hitTestResults.actor.GetName().c_str() : "" ),
144 hitTestResults.actorCoordinates.x, hitTestResults.actorCoordinates.y );
146 // Recursively deliver events to the actor and its parents, until the event is consumed or the stage is reached.
147 Dali::Actor consumedActor = EmitMouseWheelSignals( hitTestResults.actor, mouseWheelEvent );
149 DALI_LOG_INFO( gLogFilter, Debug::Concise, "HitActor: (%p) %s\n", hitTestResults.actor ? (void*)&hitTestResults.actor.GetBaseObject() : NULL, hitTestResults.actor ? hitTestResults.actor.GetName().c_str() : "" );
150 DALI_LOG_INFO( gLogFilter, Debug::Concise, "ConsumedActor: (%p) %s\n", consumedActor ? (void*)&consumedActor.GetBaseObject() : NULL, consumedActor ? consumedActor.GetName().c_str() : "" );
154 } // namespace Internal