dali-toolkit/internal/controls/relayout-controller-impl.h

   1 #ifndef __DALI_TOOLKIT_INTERNAL_RELAYOUT_CONTROLLER_IMPL_H__
   2 #define __DALI_TOOLKIT_INTERNAL_RELAYOUT_CONTROLLER_IMPL_H__
   3
   4 /*
   5  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  * http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  */
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/public-api/common/vector-wrapper.h>
  23 #include <dali/public-api/object/base-object.h>
  24
  25 // INTERNAL INCLUDES
  26 #include <dali-toolkit/public-api/controls/control.h>
  27 #include <dali-toolkit/public-api/controls/control-impl.h>
  28 #include "relayout-controller.h"
  29
  30 namespace Dali
  31 {
  32
  33 namespace Toolkit
  34 {
  35
  36 namespace Internal
  37 {
  38
  39 class RelayoutController;
  40
  41 typedef std::pair< Dali::Toolkit::Control, Vector2 > ControlSizePair;
  42 typedef std::vector< ControlSizePair > ControlStack;
  43
  44 /**
  45  * @copydoc Toolkit::Internal::RelayoutController
  46  */
  47 class RelayoutControllerImpl : public Dali::BaseObject, public ConnectionTracker
  48 {
  49 public:
  50
  51   /**
  52    * Constructor.
  53    * We should only create a unique instance.
  54    * @param relayoutFlag to avoid unnecessary calls inside a single frame
  55    */
  56   RelayoutControllerImpl( bool& relayoutFlag );
  57
  58
  59   /**
  60    * Destructor
  61    */
  62   virtual ~RelayoutControllerImpl();
  63
  64   /**
  65    * Request for relayout.
  66    */
  67   void Request();
  68
  69 private:
  70
  71   /**
  72    * Relayouts controls inside actor tree from bottom to top.
  73    */
  74   void Relayout();
  75
  76   /**
  77    * Resets the relayout controller.
  78    */
  79   void Reset();
  80
  81   /**
  82    * Disconnect the Relayout() method from the Stage::EventProcessingFinishedSignal().
  83    */
  84   void Disconnect();
  85
  86   // Undefined
  87   RelayoutControllerImpl(const RelayoutControllerImpl&);
  88   RelayoutControllerImpl& operator=(const RelayoutControllerImpl&);
  89
  90 private:
  91
  92   bool& mRelayoutFlag;               ///< reference to relayout flag to avoid unnecessary calls
  93   ControlStack mControlStack;        ///< stack for relayouting
  94   ActorSizeContainer mSizecontainer; ///< size container
  95   bool mRelayoutConnection:1;        ///< Whether EventProcessingFinishedSignal signal is connected.
  96
  97 };
  98
  99 } // namespace Internal
 100
 101
 102 inline Internal::RelayoutControllerImpl& GetImpl(Dali::Toolkit::Internal::RelayoutController& obj)
 103 {
 104   DALI_ASSERT_ALWAYS(obj);
 105
 106   Dali::BaseObject& handle = obj.GetBaseObject();
 107
 108   return static_cast<Internal::RelayoutControllerImpl&>(handle);
 109 }
 110
 111 inline const Internal::RelayoutControllerImpl& GetImpl(const Dali::Toolkit::Internal::RelayoutController& obj)
 112 {
 113   DALI_ASSERT_ALWAYS(obj);
 114
 115   const Dali::BaseObject& handle = obj.GetBaseObject();
 116
 117   return static_cast<const Internal::RelayoutControllerImpl&>(handle);
 118 }
 119
 120 } // namespace Toolkit
 121
 122 } // namespace Dali
 123
 124 #endif // __DALI_TOOLKIT_INTERNAL_RELAYOUT_CONTROLLER_IMPL_H__