dali-toolkit/internal/controls/scrollable/scroll-connector-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-toolkit/internal/controls/scrollable/scroll-connector-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/public-api/object/property-index.h>
  23 #include <dali/public-api/object/type-registry.h>
  24 #include <dali/integration-api/debug.h>
  25
  26 namespace Dali
  27 {
  28
  29 namespace Toolkit
  30 {
  31
  32 namespace Internal
  33 {
  34
  35 namespace
  36 {
  37
  38 // Signals
  39
  40 const char* const DOMAIN_CHANGED_SIGNAL_NAME =          "domain-changed";
  41 const char* const SCROLL_POSITION_CHANGED_SIGNAL_NAME = "scroll-position-changed";
  42
  43 TypeRegistration typeRegistration( typeid( Toolkit::ScrollConnector ), typeid( Dali::BaseHandle ), NULL );
  44
  45 SignalConnectorType signalConnector1( typeRegistration, DOMAIN_CHANGED_SIGNAL_NAME , &ScrollConnector::DoConnectSignal );
  46 SignalConnectorType signalConnector2( typeRegistration, SCROLL_POSITION_CHANGED_SIGNAL_NAME , &ScrollConnector::DoConnectSignal );
  47
  48 }
  49
  50 const Property::Index ScrollConnector::SCROLL_POSITION = Dali::PROPERTY_CUSTOM_START_INDEX;
  51 const Property::Index ScrollConnector::OVERSHOOT       = Dali::PROPERTY_CUSTOM_START_INDEX + 1;
  52
  53 ScrollConnector* ScrollConnector::New()
  54 {
  55   return new ScrollConnector();
  56 }
  57
  58 void ScrollConnector::SetScrollDomain( float min, float max, float length )
  59 {
  60   mMinLimit = min;
  61   mMaxLimit = max;
  62   mContentLength = length;
  63
  64   mDomainChangedSignal.Emit( mMinLimit, mMaxLimit, mContentLength );
  65 }
  66
  67 void ScrollConnector::SetScrollPosition( float position )
  68 {
  69   mScrollPositionObject.SetProperty( Toolkit::ScrollConnector::SCROLL_POSITION, position );
  70   mScrollPositionChangedSignal.Emit( position );
  71 }
  72
  73 bool ScrollConnector::DoConnectSignal( BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor )
  74 {
  75   Dali::BaseHandle handle( object );
  76
  77   bool connected( true );
  78   Toolkit::ScrollConnector scrollConnector = Toolkit::ScrollConnector::DownCast( handle );
  79
  80   if( 0 == strcmp( signalName.c_str(), DOMAIN_CHANGED_SIGNAL_NAME ) )
  81   {
  82     scrollConnector.DomainChangedSignal().Connect( tracker, functor );
  83   }
  84   else if( 0 == strcmp( signalName.c_str(), SCROLL_POSITION_CHANGED_SIGNAL_NAME ) )
  85   {
  86     scrollConnector.ScrollPositionChangedSignal().Connect( tracker, functor );
  87   }
  88   else
  89   {
  90     // signalName does not match any signal
  91     connected = false;
  92   }
  93
  94   return connected;
  95 }
  96
  97 ScrollConnector::ScrollConnector()
  98 : mMinLimit( 0.0f ),
  99   mMaxLimit( 0.0f ),
 100   mContentLength( 0.0f )
 101 {
 102   mScrollPositionObject = Constrainable::New();
 103
 104   mScrollPositionObject.RegisterProperty( Toolkit::ScrollConnector::SCROLL_POSITION_PROPERTY_NAME, 0.0f );
 105   mScrollPositionObject.RegisterProperty( Toolkit::ScrollConnector::OVERSHOOT_PROPERTY_NAME, 0.0f );
 106 }
 107
 108 ScrollConnector::~ScrollConnector()
 109 {
 110 }
 111
 112 } // namespace Internal
 113
 114 } // namespace Toolkit
 115
 116 } // namespace Dali