center-layout-impl.cpp
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/*
* 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.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// CLASS HEADER
#include "center-layout-impl.h"
// INTERNAL INCLUDES
#include "center-layout.h"
namespace
{
int ConvertToEven(int value)
{
return (value % 2 == 0) ? value : (value + 1);
}
}
namespace Dali
{
namespace Toolkit
{
namespace Internal
{
Toolkit::CenterLayout CenterLayout::New()
{
// Create the implementation, temporarily owned by this handle on stack
IntrusivePtr< CenterLayout > impl = new CenterLayout();
// Pass ownership to CustomActor handle
Toolkit::CenterLayout handle( *impl );
// Second-phase init of the implementation
// This can only be done after the CustomActor connection has been made...
impl->Initialize();
return handle;
}
CenterLayout::CenterLayout()
: Control( ControlBehaviour( CONTROL_BEHAVIOUR_NONE ) )
{
}
CenterLayout::~CenterLayout()
{
}
void CenterLayout::OnInitialize()
{
CustomActor self = Self();
// Move background behind text label
Dali::Toolkit::Control::DownCast( self ).SetBackgroundColor( Vector4(0.1f,0.1f,0.1f,1.0f) );
self.GetChildAt(0).SetZ(-1.0f);
Stage stage = Stage::GetCurrent();
Vector2 stageSize = stage.GetSize();
// Resize the center layout when the corner is grabbed
mGrabCorner = CreateSolidColorActor( Color::GREEN );
mGrabCorner.SetAnchorPoint( AnchorPoint::BOTTOM_RIGHT );
mGrabCorner.SetParentOrigin( ParentOrigin::BOTTOM_RIGHT );
mGrabCorner.SetSize( stageSize.width*0.1f, stageSize.width*0.1f );
mGrabCorner.SetZ(1.0f);
self.Add( mGrabCorner );
mPanGestureDetector = PanGestureDetector::New();
mPanGestureDetector.Attach( mGrabCorner );
mPanGestureDetector.DetectedSignal().Connect( this, &CenterLayout::OnPan );
}
void CenterLayout::OnRelayout( const Vector2& size, ActorSizeContainer& container )
{
CustomActor self = Self();
if( mLayoutSize.x <= 0.0f )
{
mLayoutSize = size;
}
for( unsigned int i=0; i<self.GetChildCount(); ++i )
{
Dali::Toolkit::Control child = Dali::Toolkit::Control::DownCast( self.GetChildAt(i) );
if( child )
{
child.SetParentOrigin( ParentOrigin::TOP_CENTER );
child.SetAnchorPoint( AnchorPoint::TOP_CENTER );
float height = child.GetHeightForWidth( size.width );
container.push_back( ActorSizePair( child, Vector2( size.width, std::min(height, size.height) ) ) );
}
}
}
void CenterLayout::OnPan( Actor actor, const PanGesture& gesture )
{
mLayoutSize.x += gesture.displacement.x * 2.0f;
mLayoutSize.y += gesture.displacement.y * 2.0f;
// Avoid pixel mis-alignment issue
Vector2 clampedSize = Vector2( ConvertToEven(static_cast<int>(mLayoutSize.x)),
ConvertToEven(static_cast<int>(mLayoutSize.y)) );
Self().SetSize( clampedSize );
RelayoutRequest();
}
} // namespace Internal
} // namespace Toolkit
} // namespace Dali