ds_slider.h

/* Copyright (C) 2017 - 2024, Thornwave Labs Inc - All Rights Reserved.
 * Unauthorized copying of this file, via any medium is strictly prohibited.
 * Proprietary and confidential.
 * Written by Razvan Turiac <razvan.turiac@thornwave.com>
*/
 
#ifndef _DS_SLIDER_H
#define _DS_SLIDER_H
 
 
#include <ds_view.h>
#include <ds_value_base.h>
 
class DsSlider: public DsView, public DsValueBase
{
public:
    DsSlider(DsView* parent, const DsPoint &pos, const DsSize &size, bool inverted = false);
 
 
    ~DsSlider();
 
 
    void drawTrackSurfaces(void);
 
 
    void drawKnobSurface(void);
 
 
    void setTrackBorderColor(DsColor color);
 
    
    void setTrackBorderThickness(uint8_t thickness);
 
 
    void setTrackProportion(float proportion);
 
 
    void setKnobBorderColor(DsColor color);
 
    
    void setKnobBorderThickness(uint8_t thickness);
 
    
    void setTrackColors(DsColor color, DsColor color_active);
 
    
    void setKnobColor(DsColor color);
 
 
    void setTrackSurfaces(DsSurface* surface, DsSurface* surface_active);
    
    
    void setKnobSurface(DsSurface* surface, uint32_t diameter);
    
 
private:
    float mTrackProportion;
    DsRect mTrackRegion;
 
    int32_t mKnobPos;           //this is the top left corner of the knob surface
    int32_t mKnobPosMin;
    int32_t mKnobPosMax;
 
    DsSurface* mTrackSurface;
    DsSurface* mActiveTrackSurface;
    DsSurface* mKnobSurface;
    
    uint16_t mTrackWidth;
    uint16_t mKnobDiameter;
 
    DsColor mTrackBorderColor;
    DsColor mTrackColor;
    DsColor mActiveTrackColor;
    DsColor mKnobBorderColor;
    DsColor mKnobColor;
 
    uint32_t mTouchTimestamp;
    int32_t mTouchPos;
 
    struct
    {
        uint8_t mCreatedTrackSurface: 1;
        uint8_t mCreatedActiveTrackSurface: 1;
        uint8_t mCreatedKnobSurface: 1;
        uint8_t mIsInverted: 1;
        uint8_t mIsTouchActive: 1;
    };
 
    uint8_t mTrackBorderThickness;
    uint8_t mKnobBorderThickness;
 
 
    void onPaint(DsRenderer &renderer) override final;
    bool onTouch(const DsTouchEvent &event) override final;
    void onSizeChange(void) override final;
 
    float onValueChange(float value) override final;
 
    bool isPosInsideKnob(const DsPoint &pos);
    DsRect updateKnobPosition(int32_t new_knob_pos);
};
 
 
#endif