hello-world-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>
using namespace Dali;
using Dali::Toolkit::TextLabel;
// This example shows how to create and display Hello World! using a simple TextActor
//
class HelloWorldController : public ConnectionTracker
{
public:
HelloWorldController( Application& application )
: mApplication( application )
{
// Connect to the Application's Init signal
mApplication.InitSignal().Connect( this, &HelloWorldController::Create );
}
~HelloWorldController() = default; // Nothing to do in destructor
// The Init signal is received once (only) during the Application lifetime
void Create( Application& application )
{
// Get a handle to the window
Window window = application.GetWindow();
window.SetBackgroundColor( Color::WHITE );
TextLabel textLabel = TextLabel::New( "Hello World" );
textLabel.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_LEFT );
textLabel.SetProperty( Dali::Actor::Property::NAME, "helloWorldLabel" );
window.Add( textLabel );
// Respond to a touch anywhere on the window
window.GetRootLayer().TouchSignal().Connect( this, &HelloWorldController::OnTouch );
// Respond to key events
window.KeyEventSignal().Connect( this, &HelloWorldController::OnKeyEvent );
}
bool OnTouch( Actor actor, const TouchEvent& touch )
{
// quit the application
mApplication.Quit();
return true;
}
void OnKeyEvent( const KeyEvent& event )
{
if( event.GetState() == KeyEvent::DOWN )
{
if ( IsKey( event, Dali::DALI_KEY_ESCAPE ) || IsKey( event, Dali::DALI_KEY_BACK ) )
{
mApplication.Quit();
}
}
}
private:
Application& mApplication;
};
int DALI_EXPORT_API main( int argc, char **argv )
{
Application application = Application::New( &argc, &argv );
HelloWorldController test( application );
application.MainLoop();
return 0;
}