tooltip-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/controls/tooltip/tooltip-properties.h>
using namespace Dali;
using namespace Dali::Toolkit;
namespace
{
const Vector4 WINDOW_COLOR( 211.0f / 255.0f, 211.0f / 255.0f, 211.0f / 255.0f, 1.0f ); ///< The color of the window
const char * const THEME_PATH( DEMO_STYLE_DIR "tooltip-example-theme.json" ); ///< The theme used for this example
const float POSITION_INCREMENTER( 0.2f ); ///< The position difference between the controls along the Y-Axis.
} // unnamed namespace
/**
* @brief Creates a controller which demonstrates the tooltip functionality in control.
*
* The Control base class supports tooltip functionality. However, the Toolkit Tooltip style is only set on Buttons by default.
* This example portrays the different ways in which a tooltip can be displayed and customised.
*/
class TooltipController : public ConnectionTracker
{
public:
TooltipController( Application& application )
: mApplication( application ),
previousPosition( 0.0f )
{
// Connect to the Application's Init signal
mApplication.InitSignal().Connect( this, &TooltipController::Create );
}
private:
// The Init signal is received once (only) during the Application lifetime
void Create( Application& application )
{
// Set the window background color and connect to the window's key signal to allow Back and Escape to exit.
Window window = application.GetWindow();
window.SetBackgroundColor( WINDOW_COLOR );
window.KeyEventSignal().Connect( this, &TooltipController::OnKeyEvent );
const Vector2 windowSize = window.GetSize();
// Add a text label at the top for information purposes
Control label = TextLabel::New( "Hover over buttons to see tooltip" );
label.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER );
label.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::TOP_CENTER );
label.SetProperty( TextLabel::Property::HORIZONTAL_ALIGNMENT, "Center" );
window.Add( label );
// Simple tooltip from stylesheet
Control simple = PushButton::New();
simple.SetStyleName( "TooltipTextOnly" );
SetLabel( simple, "Simple" );
Layout( simple, windowSize );
window.Add( simple );
// Tooltip with icon and text, from stylesheet
Control iconWithText = PushButton::New();
iconWithText.SetStyleName( "TooltipArray" );
SetLabel( iconWithText, "Icon with Text" );
Layout( iconWithText, windowSize );
window.Add( iconWithText );
// Tooltip with custom style, from stylesheet
Control customFromStylesheet = PushButton::New();
customFromStylesheet.SetStyleName( "TooltipCustom" );
SetLabel( customFromStylesheet, "Custom From Stylesheet" );
Layout( customFromStylesheet, windowSize );
window.Add( customFromStylesheet );
// Tooltip with custom style, from code
Control customFromCode = PushButton::New();
SetLabel( customFromCode, "Custom From Code" );
Layout( customFromCode, windowSize );
customFromCode.SetProperty( DevelControl::Property::TOOLTIP,
{ { Tooltip::Property::CONTENT,
Property::Array{ { { { Toolkit::Visual::Property::TYPE, Visual::IMAGE },
{ ImageVisual::Property::URL, DEMO_IMAGE_DIR "Logo-for-demo.png" } } },
{ { { Toolkit::Visual::Property::TYPE, Visual::TEXT },
{ TextVisual::Property::TEXT_COLOR, Color::WHITE },
{ TextVisual::Property::TEXT, "Custom coded style\nat hover point" },
{ TextVisual::Property::MULTI_LINE, true },
{ TextVisual::Property::HORIZONTAL_ALIGNMENT, "CENTER" },
{ TextVisual::Property::POINT_SIZE, 16 } } } } },
{ Tooltip::Property::LAYOUT, Vector2( 2, 1 ) },
{ Tooltip::Property::POSITION, Tooltip::Position::HOVER_POINT },
{ Tooltip::Property::BACKGROUND,
{ { Tooltip::Background::Property::VISUAL, DEMO_IMAGE_DIR "tooltip.9.png" },
{ Tooltip::Background::Property::BORDER, Rect< int >( 1, 5, 5, 1 ) } } }
} );
window.Add( customFromCode );
}
/**
* @brief Called when any key event is received
*
* Will use this to quit the application if Back or the Escape key is received
* @param[in] event The key event information
*/
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();
}
}
}
/**
* @brief Sets the label on the control.
* @param[in] label The label to set.
*/
void SetLabel( Control control, std::string label )
{
if( control )
{
control.SetProperty( Button::Property::LABEL,
Property::Map().Add( Toolkit::Visual::Property::TYPE, Visual::TEXT )
.Add( TextVisual::Property::TEXT, label ) );
}
}
/**
* @brief Lays out the control in the appropriate location.
* @param[in] control The control to layout.
* @param[in] windowSize The size of the window, passing it in so we don't have to retrieve it every time.
*/
void Layout( Control control, const Vector2& windowSize )
{
if( control )
{
previousPosition += POSITION_INCREMENTER;
control.SetResizePolicy( ResizePolicy::SIZE_RELATIVE_TO_PARENT, Dimension::ALL_DIMENSIONS );
control.SetProperty( Actor::Property::SIZE_MODE_FACTOR, Vector3( 0.75, 0.1, 1.0 ) );
control.SetProperty( Actor::Property::ANCHOR_POINT, AnchorPoint::CENTER );
control.SetProperty( Actor::Property::PARENT_ORIGIN, ParentOrigin::TOP_CENTER );
control.SetProperty( Actor::Property::POSITION_Y, windowSize.height * previousPosition );
}
}
private:
Application& mApplication;
float previousPosition;
};
int DALI_EXPORT_API main( int argc, char **argv )
{
Application application = Application::New( &argc, &argv, THEME_PATH );
TooltipController test( application );
application.MainLoop();
return 0;
}