/*
- * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2015 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
// INTERNAL INCLUDES
#include <dali-toolkit/public-api/controls/scrollable/item-view/item-view.h>
-namespace
-{
-
-// Lerps between current and target using the progress
-template< typename Type >
-void Lerp( Type& current, const Type& target, float progress )
-{
- current += ((target - current) * progress);
-}
-
-// Functors which wrap constraint functions with stored item IDs
-struct WrappedQuaternionConstraint
-{
- WrappedQuaternionConstraint( Dali::Toolkit::ItemLayout::QuaternionFunction wrapMe, unsigned int itemId )
- :mWrapMe(wrapMe),
- mItemId(itemId)
- {
- }
-
- void operator()( Dali::Quaternion& current, const Dali::PropertyInputContainer& inputs )
- {
- float offsetLayoutPosition = inputs[0]->GetFloat() + static_cast<float>(mItemId);
- float weight = inputs[3]->GetFloat();
-
- current = Dali::Quaternion::Slerp( current, mWrapMe( current, offsetLayoutPosition, inputs[1]->GetFloat(), inputs[2]->GetVector3() ), weight );
- }
-
- Dali::Toolkit::ItemLayout::QuaternionFunction mWrapMe;
- unsigned int mItemId;
-};
-
-struct WrappedVector3Constraint
+namespace Dali
{
- WrappedVector3Constraint( Dali::Toolkit::ItemLayout::Vector3Function wrapMe, unsigned int itemId )
- : mWrapMe(wrapMe),
- mItemId(itemId)
- {
- }
-
- void operator()( Dali::Vector3& current, const Dali::PropertyInputContainer& inputs )
- {
- float offsetLayoutPosition = inputs[0]->GetFloat() + static_cast<float>(mItemId);
- float weight = inputs[3]->GetFloat();
- Lerp( current, mWrapMe( current, offsetLayoutPosition, inputs[1]->GetFloat(), inputs[2]->GetVector3() ), weight );
- }
-
- Dali::Toolkit::ItemLayout::Vector3Function mWrapMe;
- unsigned int mItemId;
-};
-
-struct WrappedVector4Constraint
+namespace Toolkit
{
- WrappedVector4Constraint( Dali::Toolkit::ItemLayout::Vector4Function wrapMe, unsigned int itemId )
- : mWrapMe(wrapMe),
- mItemId(itemId)
- {
- }
-
- void operator()( Dali::Vector4& current, const Dali::PropertyInputContainer& inputs )
- {
- float offsetLayoutPosition = inputs[0]->GetFloat() + static_cast<float>(mItemId);
- float weight = inputs[3]->GetFloat();
-
- Lerp( current, mWrapMe( current, offsetLayoutPosition, inputs[1]->GetFloat(), inputs[2]->GetVector3() ), weight );
- }
-
- Dali::Toolkit::ItemLayout::Vector4Function mWrapMe;
- unsigned int mItemId;
-};
-struct WrappedBoolConstraint
+struct ItemLayout::Impl
{
- WrappedBoolConstraint( Dali::Toolkit::ItemLayout::BoolFunction wrapMe, unsigned int itemId )
- : mWrapMe(wrapMe),
- mItemId(itemId)
- {
- }
-
- void operator()( bool& current, const Dali::PropertyInputContainer& inputs )
- {
- float weight = inputs[3]->GetFloat();
-
- if ( weight >= 1.0f )
- {
- float offsetLayoutPosition = inputs[0]->GetFloat() + static_cast<float>(mItemId);
- current = mWrapMe( current, offsetLayoutPosition, inputs[1]->GetFloat(), inputs[2]->GetVector3() );
- }
- }
-
- Dali::Toolkit::ItemLayout::BoolFunction mWrapMe;
- unsigned int mItemId;
+ Vector3 mItemSize; ///< The size of an item in the layout
+ ControlOrientation::Type mOrientation; ///< the orientation of the layout.
};
-} //Unnamed namespace
-
-namespace Dali
-{
-
-namespace Toolkit
-{
-
ItemLayout::ItemLayout()
-: mOrientation( ControlOrientation::Up ),
- mAlphaFunction( AlphaFunctions::Linear ),
- mWeightObject()
+: mImpl( new Impl )
{
+ mImpl->mOrientation = ControlOrientation::Up;
}
ItemLayout::~ItemLayout()
{
+ delete mImpl;
}
void ItemLayout::SetOrientation(ControlOrientation::Type orientation)
{
- mOrientation = orientation;
+ mImpl->mOrientation = orientation;
}
ControlOrientation::Type ItemLayout::GetOrientation() const
{
- return mOrientation;
+ return mImpl->mOrientation;
+}
+
+void ItemLayout::GetItemSize( unsigned int itemId, const Vector3& layoutSize, Vector3& itemSize ) const
+{
+ // If item-size has not been set then get the default size
+ if ( mImpl->mItemSize == Vector3::ZERO )
+ {
+ GetDefaultItemSize( itemId, layoutSize, itemSize );
+ }
+ else
+ {
+ itemSize = mImpl->mItemSize;
+ }
+}
+
+void ItemLayout::SetItemSize( const Vector3& itemSize )
+{
+ mImpl->mItemSize = itemSize;
}
float ItemLayout::GetClosestOnScreenLayoutPosition(int itemID, float currentLayoutPosition, const Vector3& layoutSize)
return currentLayoutPosition;
}
-int ItemLayout::GetNextFocusItemID(int itemID, int maxItems, Dali::Toolkit::Control::KeyboardFocusNavigationDirection direction, bool loopEnabled)
+int ItemLayout::GetNextFocusItemID(int itemID, int maxItems, Dali::Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
{
switch( direction )
{
- case Control::Left:
- case Control::Up:
+ case Control::KeyboardFocus::LEFT:
+ case Control::KeyboardFocus::UP:
{
itemID--;
if( itemID < 0 )
}
break;
}
- case Control::Right:
- case Control::Down:
+ case Control::KeyboardFocus::RIGHT:
+ case Control::KeyboardFocus::DOWN:
{
itemID++;
if( itemID >= maxItems )
return GetScrollSpeedFactor();
}
-void ItemLayout::ApplyConstraints( Actor& actor, const int itemId, const float durationSeconds, Handle scrollPositionObject, const Actor& itemViewActor )
-{
- // This just implements the default behaviour of constraint application.
- // Custom layouts can override this function to apply their custom constraints.
- Dali::Toolkit::ItemView itemView = Dali::Toolkit::ItemView::DownCast( itemViewActor );
- if(itemView && scrollPositionObject)
- {
- Property::Index scrollSpeedProperty = itemView.GetPropertyIndex("item-view-scroll-speed");
- Property::Index scrollPositionProperty = scrollPositionObject.GetPropertyIndex("scroll-position");
-
- // We want to animate the layout in so use a weight object to do this
- if ( !mWeightObject )
- {
- mWeightObject = WeightObject::New();
- }
-
- ItemLayout::Vector3Function positionConstraint;
- if (GetPositionConstraint(itemId, positionConstraint))
- {
- WrappedVector3Constraint wrapped(positionConstraint, itemId);
- Constraint constraint = Constraint::New<Vector3>( actor, Actor::Property::POSITION, wrapped );
- constraint.AddSource( Source( scrollPositionObject, scrollPositionProperty ) );
- constraint.AddSource( ParentSource( scrollSpeedProperty ) );
- constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
- constraint.AddSource( Source( mWeightObject, WeightObject::WEIGHT ) );
- constraint.Apply();
- }
-
- ItemLayout::QuaternionFunction rotationConstraint;
- if (GetRotationConstraint(itemId, rotationConstraint))
- {
- WrappedQuaternionConstraint wrapped(rotationConstraint, itemId);
-
- Constraint constraint = Constraint::New<Quaternion>( actor, Actor::Property::ORIENTATION, wrapped );
- constraint.AddSource( Source( scrollPositionObject, scrollPositionProperty ) );
- constraint.AddSource( ParentSource( scrollSpeedProperty ) );
- constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
- constraint.AddSource( Source( mWeightObject, WeightObject::WEIGHT ) );
- constraint.Apply();
- }
-
- ItemLayout::Vector3Function scaleConstraint;
- if (GetScaleConstraint(itemId, scaleConstraint))
- {
- WrappedVector3Constraint wrapped(scaleConstraint, itemId);
-
- Constraint constraint = Constraint::New<Vector3>( actor, Actor::Property::SCALE, wrapped );
- constraint.AddSource( Source( scrollPositionObject, scrollPositionProperty ) );
- constraint.AddSource( ParentSource( scrollSpeedProperty ) );
- constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
- constraint.AddSource( Source( mWeightObject, WeightObject::WEIGHT ) );
- constraint.Apply();
- }
-
- ItemLayout::Vector4Function colorConstraint;
- if (GetColorConstraint(itemId, colorConstraint))
- {
- WrappedVector4Constraint wrapped(colorConstraint, itemId);
-
- Constraint constraint = Constraint::New<Vector4>( actor, Actor::Property::COLOR, wrapped );
- constraint.AddSource( Source( scrollPositionObject, scrollPositionProperty ) );
- constraint.AddSource( ParentSource( scrollSpeedProperty ) );
- constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
- constraint.AddSource( Source( mWeightObject, WeightObject::WEIGHT ) );
- constraint.SetRemoveAction(Dali::Constraint::Discard);
- constraint.Apply();
- }
-
- ItemLayout::BoolFunction visibilityConstraint;
- if (GetVisibilityConstraint(itemId, visibilityConstraint))
- {
- WrappedBoolConstraint wrapped(visibilityConstraint, itemId);
-
- Constraint constraint = Constraint::New<bool>( actor, Actor::Property::VISIBLE, wrapped );
- constraint.AddSource( Source( scrollPositionObject, scrollPositionProperty ) );
- constraint.AddSource( ParentSource( scrollSpeedProperty ) );
- constraint.AddSource( ParentSource( Actor::Property::SIZE ) );
- constraint.AddSource( Source( mWeightObject, WeightObject::WEIGHT ) );
-
- // Release visibility constraints the same time as the color constraint
- constraint.SetRemoveAction(Dali::Constraint::Discard);
-
- constraint.Apply();
- }
-
- KeyFrames keyFrames = KeyFrames::New();
- keyFrames.Add( 0.0f, 0.0f );
- keyFrames.Add( 1.0f, 1.0f );
-
- Animation applyAnimation = Dali::Animation::New( durationSeconds );
- applyAnimation.AnimateBetween( Property( mWeightObject, WeightObject::WEIGHT ), keyFrames, mAlphaFunction, durationSeconds );
- applyAnimation.Play();
- }
-}
-
-Vector3 ItemLayout::GetItemPosition(int itemID, float currentLayoutPosition, const Vector3& layoutSize) const
-{
- Vector3 itemPosition = Vector3::ZERO;
-
- ItemLayout::Vector3Function positionConstraint;
- if (GetPositionConstraint(itemID, positionConstraint))
- {
- itemPosition = positionConstraint(Vector3::ZERO, currentLayoutPosition + itemID, 0.0f, layoutSize);
- }
-
- return itemPosition;
-}
-
-void ItemLayout::SetAlphaFunction(AlphaFunction func)
-{
- mAlphaFunction = func;
-}
-
-AlphaFunction ItemLayout::GetAlphaFunction() const
-{
- return mAlphaFunction;
-}
-
-
} // namespace Toolkit
} // namespace Dali
projects / platform / core / uifw / dali-toolkit.git / blobdiff