RmlUi/Source/Controls/InputTypeRange.h

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#ifndef RMLUICONTROLSINPUTTYPERANGE_H
#define RMLUICONTROLSINPUTTYPERANGE_H

#include "InputType.h"

namespace Rml {
namespace Controls {

class WidgetSliderInput;

/**
	A range input type handler.

	@author Peter Curry
 */

class InputTypeRange : public InputType
{
public:
	InputTypeRange(ElementFormControlInput* element);
	virtual ~InputTypeRange();

	/// Returns a string representation of the current value of the form control.
	/// @return The value of the form control.
	Rml::Core::String GetValue() const override;

	/// Called every update from the host element.
	void OnUpdate() override;

	/// Called every time the host element's size changes.
	void OnResize() override;

	/// Checks for necessary functional changes in the control as a result of changed attributes.
	/// @param[in] changed_attributes The list of changed attributes.
	/// @return True if no layout is required, false if the layout needs to be dirtied.
	bool OnAttributeChange(const Core::ElementAttributes& changed_attributes) override;

	/// Checks for necessary functional changes in the control as a result of the event.
	/// @param[in] event The event to process.
	void ProcessDefaultAction(Core::Event& event) override;

	/// Sizes the dimensions to the element's inherent size.
	/// @return True.
	bool GetIntrinsicDimensions(Rml::Core::Vector2f& dimensions) override;

private:
	WidgetSliderInput* widget;
};

}
}

#endif