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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* 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.
*
*/
#include "WidgetSliderInput.h"
#include "../../Include/Rocket/Core/Math.h"
#include "../../Include/Rocket/Core/Element.h"
namespace Rocket {
namespace Controls {
WidgetSliderInput::WidgetSliderInput(ElementFormControl* parent) : WidgetSlider(parent)
{
value = 0;
min_value = 0;
max_value = 100;
step = 1;
}
WidgetSliderInput::~WidgetSliderInput()
{
}
void WidgetSliderInput::SetValue(float value)
{
float num_steps = (value - min_value) / step;
float new_value = min_value + Rocket::Core::Math::Round(num_steps) * step;
SetBarPosition(SetValueInternal(new_value));
}
float WidgetSliderInput::GetValue()
{
return value;
}
// Sets the minimum value of the slider.
void WidgetSliderInput::SetMinValue(float _min_value)
{
min_value = _min_value;
}
// Sets the maximum value of the slider.
void WidgetSliderInput::SetMaxValue(float _max_value)
{
max_value = _max_value;
}
// Sets the slider's value increment.
void WidgetSliderInput::SetStep(float _step)
{
// Can't have a zero step!
if (_step == 0)
return;
step = _step;
}
// Formats the slider's elements.
void WidgetSliderInput::FormatElements()
{
Rocket::Core::Vector2f box = GetParent()->GetBox().GetSize();
WidgetSlider::FormatElements(box, GetOrientation() == VERTICAL ? box.y : box.x);
}
// Called when the slider's bar position is set or dragged.
float WidgetSliderInput::OnBarChange(float bar_position)
{
float new_value = min_value + bar_position * (max_value - min_value);
int num_steps = Rocket::Core::Math::Round((new_value - value) / step);
return SetValueInternal(value + num_steps * step);
}
// Called when the slider is incremented by one 'line'.
float WidgetSliderInput::OnLineIncrement()
{
return SetValueInternal(value + step);
}
// Called when the slider is decremented by one 'line'.
float WidgetSliderInput::OnLineDecrement()
{
return SetValueInternal(value - step);
}
// Called when the slider is incremented by one 'page'.
float WidgetSliderInput::OnPageIncrement(float click_position)
{
return OnBarChange(click_position);
}
// Called when the slider is incremented by one 'page'.
float WidgetSliderInput::OnPageDecrement(float click_position)
{
return OnBarChange(click_position);
}
// Clamps the new value, sets it on the slider.
float WidgetSliderInput::SetValueInternal(float new_value)
{
if (min_value < max_value)
{
value = Rocket::Core::Math::Clamp(new_value, min_value, max_value);
}
else if (min_value > max_value)
{
value = Rocket::Core::Math::Clamp(new_value, max_value, min_value);
}
else
{
value = min_value;
return 0;
}
return (value - min_value) / (max_value - min_value);
}
}
}
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