Knob.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2022 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
// you must not claim that you wrote the original software.
// If you use this software in a product, an acknowledgment
// in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
// and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
 
#ifndef TGUI_KNOB_HPP
#define TGUI_KNOB_HPP
 
 
#include <TGUI/Widget.hpp>
#include <TGUI/Renderers/KnobRenderer.hpp>
 
 
namespace tgui
{
 class TGUI_API Knob : public Widget
 {
 public:
 
 using Ptr = std::shared_ptr<Knob>; 
 using ConstPtr = std::shared_ptr<const Knob>; 
 
 static constexpr const char StaticWidgetType[] = "Knob"; 
 
 
 Knob(const char* typeName = StaticWidgetType, bool initRenderer = true);
 
 
 static Knob::Ptr create();
 
 
 static Knob::Ptr copy(const Knob::ConstPtr& knob);
 
 
 KnobRenderer* getSharedRenderer();
 const KnobRenderer* getSharedRenderer() const;
 
 KnobRenderer* getRenderer();
 
 
 void setSize(const Layout2d& size) override;
 using Widget::setSize;
 
 
 void setStartRotation(float startRotation);
 
 
 float getStartRotation() const;
 
 
 void setEndRotation(float endRotation);
 
 
 float getEndRotation() const;
 
 
 void setMinimum(float minimum);
 
 
 float getMinimum() const;
 
 
 void setMaximum(float maximum);
 
 
 float getMaximum() const;
 
 
 void setValue(float value);
 
 
 float getValue() const;
 
 
 void setClockwiseTurning(bool clockwise);
 
 
 bool getClockwiseTurning() const;
 
 
 bool isMouseOnWidget(Vector2f pos) const override;
 
 void leftMousePressed(Vector2f pos) override;
 
 void mouseMoved(Vector2f pos) override;
 
 
 void draw(BackendRenderTarget& target, RenderStates states) const override;
 
 
 protected:
 
 Signal& getSignal(String signalName) override;
 
 
 void rendererChanged(const String& property) override;
 
 
 std::unique_ptr<DataIO::Node> save(SavingRenderersMap& renderers) const override;
 
 
 void load(const std::unique_ptr<DataIO::Node>& node, const LoadingRenderersMap& renderers) override;
 
 
 // Returns the size without the borders
 Vector2f getInnerSize() const;
 
 
 // Recalculates the rotation of the knob.
 void recalculateRotation();
 
 
 // Makes a copy of the widget
 Widget::Ptr clone() const override;
 
 
 public:
 
 SignalFloat onValueChange = {"ValueChanged"}; 
 
 
 protected:
 
 bool m_clockwiseTurning = true; // Does rotating clockwise increment the value?
 float m_startRotation = 270;
 float m_endRotation = 270;
 
 float m_minimum = 0;
 float m_value = 0;
 float m_maximum = 360;
 
 float m_angle = 270;
 
 Sprite m_spriteBackground;
 Sprite m_spriteForeground;
 
 // Cached renderer properties
 Borders m_bordersCached;
 Color m_borderColorCached;
 Color m_backgroundColorCached;
 Color m_thumbColorCached;
 float m_imageRotationCached = 0;
 };
 
}
 
 
#endif // TGUI_KNOB_HPP