arc-visual-example.cpp
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/*
* Copyright (c) 2020 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.
*
*/
#include <dali-toolkit/dali-toolkit.h>
#include <dali-toolkit/devel-api/controls/control-devel.h>
#include <dali-toolkit/devel-api/visuals/visual-properties-devel.h>
#include <dali-toolkit/devel-api/visuals/arc-visual-properties-devel.h>
#include <dali-toolkit/devel-api/visual-factory/transition-data.h>
using namespace Dali;
using namespace Dali::Toolkit;
namespace
{
const float START_ANGLE_INITIAL_VALUE( 0.0f );
const float START_ANGLE_TARGET_VALUE( 360.0f );
const float SWEEP_ANGLE_INITIAL_VALUE( 90.0f );
const float SWEEP_ANGLE_TARGET_VALUE( 360.0f );
const float ANIMATION_DURATION( 5.0f );
const Property::Value BACKGROUND
{
{ Visual::Property::TYPE, DevelVisual::ARC },
{ Visual::Property::MIX_COLOR, Color::RED },
{ DevelArcVisual::Property::START_ANGLE, 0.0f },
{ DevelArcVisual::Property::SWEEP_ANGLE, 90.0f },
{ DevelArcVisual::Property::CAP, DevelArcVisual::Cap::ROUND },
{ DevelArcVisual::Property::THICKNESS, 20.0f }
};
} // namespace
// This example shows the properties of the arc visual - thickness, startAngle and sweepAngle and animates them.
//
class ArcVisualExample : public ConnectionTracker
{
public:
ArcVisualExample( Application& application )
: mApplication( application ),
mStartAngle( 0.0f ),
mSweepAngle( 0.0f )
{
// Connect to the Application's Init signal
mApplication.InitSignal().Connect( this, &ArcVisualExample::Create );
}
~ArcVisualExample() = default;
private:
// The Init signal is received once (only) during the Application lifetime
void Create( Application& application )
{
// Get a handle to the stage
Stage stage = Stage::GetCurrent();
stage.SetBackgroundColor( Color::WHITE );
mControl = Control::New();
mControl.SetParentOrigin( ParentOrigin::CENTER );
mControl.SetSize( 200.0f, 200.0f );
mControl.SetProperty( Control::Property::BACKGROUND, BACKGROUND );
stage.Add( mControl );
// Respond to a click anywhere on the stage
stage.GetRootLayer().TouchSignal().Connect( this, &ArcVisualExample::OnTouch );
// Respond to key events
stage.KeyEventSignal().Connect( this, &ArcVisualExample::OnKeyEvent );
}
bool OnTouch( Actor actor, const TouchData& touch )
{
if( touch.GetState( 0 ) == PointState::UP )
{
Property::Array array;
array.PushBack( Property::Map().Add( "target", "background" )
.Add( "property", "startAngle" )
.Add( "initialValue", START_ANGLE_INITIAL_VALUE )
.Add( "targetValue", START_ANGLE_TARGET_VALUE )
.Add( "animator", Property::Map().Add( "duration", ANIMATION_DURATION ) ) );
array.PushBack( Property::Map().Add( "target", "background" )
.Add( "property", "sweepAngle" )
.Add( "initialValue", SWEEP_ANGLE_INITIAL_VALUE )
.Add( "targetValue", SWEEP_ANGLE_TARGET_VALUE )
.Add( "animator", Property::Map().Add( "duration", ANIMATION_DURATION ) ) );
TransitionData transitionData = TransitionData::New( array );
Animation animation = DevelControl::CreateTransition( Toolkit::Internal::GetImplementation( mControl ), transitionData );
animation.Play();
}
return true;
}
void OnKeyEvent( const KeyEvent& event )
{
if( event.state == KeyEvent::Down )
{
if ( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
{
mApplication.Quit();
}
}
}
private:
Application& mApplication;
Control mControl;
float mStartAngle;
float mSweepAngle;
};
int DALI_EXPORT_API main( int argc, char **argv )
{
Application application = Application::New( &argc, &argv );
ArcVisualExample test( application );
application.MainLoop();
return 0;
}