2 * Copyright (c) 2018 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 "frame-callback.h"
25 FrameCallback::FrameCallback()
26 : mActorIdContainer(),
27 stageHalfWidth( 0.0f )
31 void FrameCallback::SetStageWidth( float stageWidth )
33 stageHalfWidth = stageWidth * 0.5f;
36 void FrameCallback::AddId( unsigned int id )
38 mActorIdContainer.PushBack( id );
41 void FrameCallback::Update( Dali::UpdateProxy& updateProxy, float /* elapsedSeconds */ )
43 // Go through Actor ID container and check if we've hit the sides.
44 for( auto&& i : mActorIdContainer )
48 updateProxy.GetPositionAndSize( i, position, size ); // Retrieve the position and size using the Actor ID.
50 float halfWidthPoint = stageHalfWidth - size.width * 0.5f;
51 float xTranslation = std::abs( position.x );
52 if( xTranslation > halfWidthPoint )
54 // Actor has hit the edge, adjust the size accordingly.
55 float adjustment = xTranslation - halfWidthPoint;
56 size.width += adjustment * SIZE_MULTIPLIER;
57 size.height += adjustment * SIZE_MULTIPLIER;
59 updateProxy.SetSize( i, size ); // Set the size using the UpdateProxy.
62 // Retrieve the actor's position and set make it more transparent the closer it is to the middle.
63 Vector4 color = updateProxy.GetWorldColor( i );
64 color.a = xTranslation / halfWidthPoint;
65 updateProxy.SetWorldColor( i, color );