dali/internal/event/events/pinch-gesture-detector-impl.cpp

   1 /*
   2  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   3  *
   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
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  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.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali/internal/event/events/pinch-gesture-detector-impl.h>
  20
  21 // INTERNAL INCLUDES
  22 #include <dali/public-api/events/pinch-gesture.h>
  23 #include <dali/public-api/object/type-registry.h>
  24 #include <dali/internal/event/events/gesture-event-processor.h>
  25 #include <dali/integration-api/debug.h>
  26
  27 namespace Dali
  28 {
  29
  30 namespace Internal
  31 {
  32
  33 namespace
  34 {
  35
  36 // Signals
  37
  38 const char* const SIGNAL_PINCH_DETECTED = "pinch-detected";
  39
  40 BaseHandle Create()
  41 {
  42   return Dali::PinchGestureDetector::New();
  43 }
  44
  45 TypeRegistration mType( typeid(Dali::PinchGestureDetector), typeid(Dali::GestureDetector), Create );
  46
  47 SignalConnectorType signalConnector1( mType, SIGNAL_PINCH_DETECTED, &PinchGestureDetector::DoConnectSignal );
  48
  49 }
  50
  51
  52 PinchGestureDetectorPtr PinchGestureDetector::New()
  53 {
  54   return new PinchGestureDetector;
  55 }
  56
  57 PinchGestureDetector::PinchGestureDetector()
  58 : GestureDetector(Gesture::Pinch)
  59 {
  60 }
  61
  62 PinchGestureDetector::~PinchGestureDetector()
  63 {
  64 }
  65
  66 void PinchGestureDetector::EmitPinchGestureSignal(Dali::Actor actor, const PinchGesture& pinch)
  67 {
  68   // Guard against destruction during signal emission
  69   Dali::PinchGestureDetector handle( this );
  70
  71   mDetectedSignal.Emit( actor, pinch );
  72 }
  73
  74 bool PinchGestureDetector::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
  75 {
  76   bool connected( true );
  77   PinchGestureDetector* gesture = dynamic_cast<PinchGestureDetector*>(object);
  78
  79   if ( 0 == strcmp( signalName.c_str(), SIGNAL_PINCH_DETECTED ) )
  80   {
  81     gesture->DetectedSignal().Connect( tracker, functor );
  82   }
  83   else
  84   {
  85     // signalName does not match any signal
  86     connected = false;
  87   }
  88
  89   return connected;
  90 }
  91
  92 void PinchGestureDetector::OnActorAttach(Actor& actor)
  93 {
  94   // Do nothing
  95 }
  96
  97 void PinchGestureDetector::OnActorDetach(Actor& actor)
  98 {
  99   // Do nothing
 100 }
 101
 102 void PinchGestureDetector::OnActorDestroyed(Object& object)
 103 {
 104   // Do nothing
 105 }
 106
 107 } // namespace Internal
 108
 109 } // namespace Dali