2 * Copyright (c) 2015 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include <dali-toolkit/public-api/controls/scrollable/item-view/item-layout.h>
22 #include <dali/public-api/animation/animation.h>
23 #include <dali/public-api/animation/constraint.h>
24 #include <dali/public-api/animation/time-period.h>
27 #include <dali-toolkit/public-api/controls/scrollable/item-view/item-view.h>
28 #include <dali-toolkit/devel-api/controls/scrollable/item-view/default-item-layout-property.h>
36 struct ItemLayout::Impl
38 Vector3 mItemSize; ///< The size of an item in the layout
39 ControlOrientation::Type mOrientation; ///< the orientation of the layout.
40 Property::Map mProperties;
43 ItemLayout::ItemLayout()
46 mImpl->mOrientation = ControlOrientation::Up;
49 ItemLayout::~ItemLayout()
54 void ItemLayout::SetOrientation(ControlOrientation::Type orientation)
56 mImpl->mOrientation = orientation;
59 ControlOrientation::Type ItemLayout::GetOrientation() const
61 return mImpl->mOrientation;
64 void ItemLayout::GetItemSize( unsigned int itemId, const Vector3& layoutSize, Vector3& itemSize ) const
66 // If item-size has not been set then get the default size
67 if ( mImpl->mItemSize == Vector3::ZERO )
69 GetDefaultItemSize( itemId, layoutSize, itemSize );
73 itemSize = mImpl->mItemSize;
77 void ItemLayout::SetItemSize( const Vector3& itemSize )
79 mImpl->mItemSize = itemSize;
82 float ItemLayout::GetClosestOnScreenLayoutPosition(int itemID, float currentLayoutPosition, const Vector3& layoutSize)
84 Vector3 itemPosition = GetItemPosition( itemID, currentLayoutPosition, layoutSize );
86 GetItemSize(itemID, layoutSize, itemSize);
87 Vector3 onScreenArea = (layoutSize - itemSize) * 0.5f;
88 if (itemPosition.x < -onScreenArea.x
89 || itemPosition.x > onScreenArea.x
90 || itemPosition.y < -onScreenArea.y
91 || itemPosition.y > onScreenArea.y)
93 // item not within viewable area
94 // safest thing to do here since we have no idea how the implementation will work is to return the scroll to position
95 return GetItemScrollToPosition(itemID);
97 return currentLayoutPosition;
100 int ItemLayout::GetNextFocusItemID(int itemID, int maxItems, Dali::Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
104 case Control::KeyboardFocus::LEFT:
105 case Control::KeyboardFocus::UP:
110 itemID = loopEnabled ? maxItems - 1 : 0;
114 case Control::KeyboardFocus::RIGHT:
115 case Control::KeyboardFocus::DOWN:
118 if( itemID >= maxItems )
120 itemID = loopEnabled ? 0 : maxItems - 1;
132 float ItemLayout::GetFlickSpeedFactor() const
134 // By default, the speed factor while dragging and swiping is the same.
135 return GetScrollSpeedFactor();
138 void ItemLayout::SetLayoutProperties(const Property::Map& properties)
140 for( unsigned int idx = 0, mapCount = properties.Count(); idx < mapCount; ++idx )
142 KeyValuePair propertyPair( properties.GetKeyValue( idx ) );
144 if(propertyPair.first == DefaultItemLayoutProperty::ITEM_SIZE)
146 SetItemSize(propertyPair.second.Get<Vector3>());
148 else if(propertyPair.first == DefaultItemLayoutProperty::ORIENTATION)
150 //Up, Left, Down, Right
151 int orientationType = propertyPair.second.Get<int>();
152 if(orientationType <= ControlOrientation::Right && orientationType >= ControlOrientation::Up)
154 SetOrientation(ControlOrientation::Type(orientationType));
158 mImpl->mProperties = properties;
161 Property::Map ItemLayout::GetLayoutProperties()
163 return mImpl->mProperties;
166 } // namespace Toolkit