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

   1 //
   2 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
   3 //
   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
   7 //
   8 //     http://floralicense.org/license/
   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 // CLASS HEADER
  18 #include <dali/internal/event/events/tap-gesture-detector-impl.h>
  19
  20 // INTERNAL INCLUDES
  21 #include <dali/public-api/events/tap-gesture.h>
  22 #include <dali/public-api/object/type-registry.h>
  23 #include <dali/integration-api/debug.h>
  24 #include <dali/internal/event/events/gesture-event-processor.h>
  25
  26 namespace Dali
  27 {
  28
  29 namespace Internal
  30 {
  31
  32 namespace
  33 {
  34 BaseHandle Create()
  35 {
  36   return Dali::TapGestureDetector::New();
  37 }
  38
  39 TypeRegistration mType( typeid(Dali::TapGestureDetector), typeid(Dali::GestureDetector), Create );
  40
  41 SignalConnectorType signalConnector1( mType, Dali::TapGestureDetector::SIGNAL_TAP_DETECTED, &TapGestureDetector::DoConnectSignal );
  42
  43 }
  44
  45 TapGestureDetectorPtr TapGestureDetector::New()
  46 {
  47   return new TapGestureDetector;
  48 }
  49
  50 TapGestureDetectorPtr TapGestureDetector::New(unsigned int tapsRequired, unsigned int touchesRequired)
  51 {
  52   return new TapGestureDetector(tapsRequired, touchesRequired);
  53 }
  54
  55 TapGestureDetector::TapGestureDetector()
  56 : GestureDetector(Gesture::Tap),
  57   mTapsRequired(1),
  58   mTouchesRequired(1)
  59 {
  60 }
  61
  62 TapGestureDetector::TapGestureDetector(unsigned int tapsRequired, unsigned int touchesRequired)
  63 : GestureDetector(Gesture::Tap),
  64   mTapsRequired(tapsRequired),
  65   mTouchesRequired(touchesRequired)
  66 {
  67 }
  68
  69 TapGestureDetector::~TapGestureDetector()
  70 {
  71 }
  72
  73 void TapGestureDetector::SetTapsRequired(unsigned int taps)
  74 {
  75   DALI_ASSERT_ALWAYS(taps > 0 && "Can only set a positive number of taps" );
  76
  77   if (mTapsRequired != taps)
  78   {
  79     mTapsRequired = taps;
  80
  81     if (!mAttachedActors.empty())
  82     {
  83       mGestureEventProcessor.GestureDetectorUpdated(this);
  84     }
  85   }
  86 }
  87
  88 void TapGestureDetector::SetTouchesRequired(unsigned int touches)
  89 {
  90   DALI_ASSERT_ALWAYS(touches > 0 && "Can only set a positive number of touches" );
  91
  92   if (mTouchesRequired != touches)
  93   {
  94     mTouchesRequired = touches;
  95
  96     if (!mAttachedActors.empty())
  97     {
  98       mGestureEventProcessor.GestureDetectorUpdated(this);
  99     }
 100   }
 101 }
 102
 103 unsigned int TapGestureDetector::GetTapsRequired() const
 104 {
 105   return mTapsRequired;
 106 }
 107
 108 unsigned int TapGestureDetector::GetTouchesRequired() const
 109 {
 110   return mTouchesRequired;
 111 }
 112
 113 void TapGestureDetector::EmitTapGestureSignal(Dali::Actor tappedActor, const TapGesture& tap)
 114 {
 115   // Guard against destruction during signal emission
 116   Dali::TapGestureDetector handle( this );
 117
 118   mDetectedSignalV2.Emit( tappedActor, tap );
 119 }
 120
 121 bool TapGestureDetector::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
 122 {
 123   bool connected( true );
 124   TapGestureDetector* gesture = dynamic_cast<TapGestureDetector*>(object);
 125
 126   if ( Dali::TapGestureDetector::SIGNAL_TAP_DETECTED  == signalName )
 127   {
 128     gesture->DetectedSignal().Connect( tracker, functor );
 129   }
 130   else
 131   {
 132     // signalName does not match any signal
 133     connected = false;
 134   }
 135
 136   return connected;
 137 }
 138
 139 void TapGestureDetector::OnActorAttach(Actor& actor)
 140 {
 141   // Do nothing
 142 }
 143
 144 void TapGestureDetector::OnActorDetach(Actor& actor)
 145 {
 146   // Do nothing
 147 }
 148
 149 void TapGestureDetector::OnActorDestroyed(Object& object)
 150 {
 151   // Do nothing
 152 }
 153
 154 } // namespace Internal
 155
 156 } // namespace Dali