text-overlap-example.cpp
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#include <dali-toolkit/dali-toolkit.h>
#include <dali/devel-api/actors/actor-devel.h>
#include "text-overlap-example.h"
#include <iostream>
using namespace Dali;
using namespace Dali::Toolkit;
static const int NUMBER_OF_LABELS(2);
namespace Demo
{
TextOverlapController::TextOverlapController( Application& app )
: mApplication( app ),
mTopmostLabel( 1 )
{
app.InitSignal().Connect( this, &TextOverlapController::Create );
app.TerminateSignal().Connect( this, &TextOverlapController::Destroy );
}
void TextOverlapController::Create( Application& app )
{
Window window = app.GetWindow();
window.KeyEventSignal().Connect( this, &TextOverlapController::OnKeyEvent );
Vector2 windowSize = window.GetSize();
mLabels[0] = TextLabel::New("Text Label 1");
mLabels[1] = TextLabel::New("Text Label 2");
mLabels[0].SetProperty( Dali::Actor::Property::NAME,"Label1");
mLabels[1].SetProperty( Dali::Actor::Property::NAME,"Label2");
mLabels[0].SetProperty( Dali::DevelActor::Property::SIBLING_ORDER, 1 );
mLabels[1].SetProperty( Dali::DevelActor::Property::SIBLING_ORDER, 2 );
mLabels[0].SetProperty( Control::Property::BACKGROUND, Color::RED );
mLabels[1].SetProperty( Control::Property::BACKGROUND, Color::YELLOW );
for(int i=0; i<NUMBER_OF_LABELS; ++i )
{
mLabels[i].SetProperty( TextLabel::Property::HORIZONTAL_ALIGNMENT, "CENTER" );
mLabels[i].SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
mLabels[i].SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_LEFT );
mLabels[i].SetProperty( Actor::Property::POSITION, Vector2( 0, (i*2+1) * windowSize.height * 0.25f ));
}
window.Add( mLabels[0] );
window.Add( mLabels[1] );
mSwapButton = PushButton::New();
mSwapButton.SetProperty( Button::Property::LABEL, "Swap depth order");
mSwapButton.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::BOTTOM_CENTER );
mSwapButton.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::BOTTOM_CENTER );
mSwapButton.ClickedSignal().Connect( this, &TextOverlapController::OnClicked );
mSwapButton.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
mSwapButton.SetResizePolicy( ResizePolicy::USE_NATURAL_SIZE, Dimension::HEIGHT );
window.Add( mSwapButton );
Layer rootLayer = window.GetRootLayer();
rootLayer.SetProperty( Dali::Actor::Property::NAME,"RootLayer");
mPanDetector = PanGestureDetector::New();
mPanDetector.Attach( rootLayer );
mPanDetector.AddAngle( Radian(-0.5f * Math::PI ));
mPanDetector.AddAngle( Radian( 0.5f * Math::PI ));
mPanDetector.DetectedSignal().Connect( this, &TextOverlapController::OnPan );
}
void TextOverlapController::OnPan( Actor actor, const PanGesture& gesture )
{
if( ! mGrabbedActor || gesture.state == PanGesture::Started )
{
for( int i=0; i<NUMBER_OF_LABELS; ++i )
{
Vector3 position = mLabels[i].GetCurrentProperty< Vector3 >( Actor::Property::POSITION );
Vector3 size = mLabels[i].GetCurrentProperty< Vector3 >( Actor::Property::SIZE );
if( gesture.position.y > position.y - size.y * 0.5f &&
gesture.position.y <= position.y + size.y * 0.5f )
{
mGrabbedActor = mLabels[i];
break;
}
}
}
else if( mGrabbedActor && gesture.state == PanGesture::Continuing )
{
Vector2 windowSize = mApplication.GetWindow().GetSize();
Vector3 size = mGrabbedActor.GetCurrentProperty< Vector3 >( Actor::Property::SIZE );
float y = Clamp( gesture.position.y, size.y * 0.5f, windowSize.y - size.y*0.5f );
mGrabbedActor.SetProperty( Actor::Property::POSITION, Vector2( 0, y ));
}
else
{
mGrabbedActor.Reset();
}
}
void TextOverlapController::Destroy( Application& app )
{
mPanDetector.DetachAll();
UnparentAndReset(mLabels[0]);
UnparentAndReset(mLabels[1]);
mGrabbedActor.Reset();
}
bool TextOverlapController::OnClicked( Button button )
{
mTopmostLabel = 1-mTopmostLabel; // toggles between 0 and 1
mLabels[mTopmostLabel].RaiseToTop();
return false;
}
void TextOverlapController::OnKeyEvent( const KeyEvent& keyEvent )
{
if( keyEvent.GetState() == KeyEvent::DOWN &&
( IsKey( keyEvent, DALI_KEY_BACK ) ||
IsKey( keyEvent, DALI_KEY_ESCAPE ) ) )
{
mApplication.Quit();
}
else
{
Dali::Layer l = mApplication.GetWindow().GetRootLayer();
int so = l.GetProperty<int>(Dali::DevelActor::Property::SIBLING_ORDER);
l.SetProperty(Dali::DevelActor::Property::SIBLING_ORDER, so+1);
}
}
} // namespace Demo
int DALI_EXPORT_API main( int argc, char** argv )
{
{
Application app = Application::New( &argc, &argv );
Demo::TextOverlapController controller( app );
app.MainLoop();
}
exit( 0 );
}