EnumIndicator.cpp

/*
 * EnumIndicator.cpp
 */ 
 
#include "Indicators/EnumIndicator.h"
#include "Core/UI_Manager.h"
 
template <class T>
EnumIndicator<T>::EnumIndicator(T* valuePointer, const char** enumNames, uint8_t numEnumValues, uint16_t locX, uint16_t locY) : UIElement(locX, locY, UI_INDICATOR)
{
    _enumNames = enumNames;
    _numEnumValues = numEnumValues;
    _valuePointer = valuePointer;
}
 
template <class T>
void EnumIndicator<T>::Draw(bool redraw)
{
    if (Visible)
    {
        if (_lastValueDraw != *_valuePointer || redraw || !_lastDrawnVisible)
        {
            _lastDrawnVisible = true;
            _lastValueDraw = *_valuePointer;
 
            // If the Draw() is called on a object of the EnumIndicator, the Type is UI_INDICATOR
            // If the Draw() is called from an EnumControl object, the Type was set to UI_CONTROL there
            if(Type == UI_INDICATOR)
            {
                UiManager.Gfx->fillRect(LocX, LocY, Width, Height, UiManager.ColorBackground);
            }
                
            UiManager.Gfx->setCursor(LocX + UiManager.ElementMargin + UiManager.ElementPadding, LocY + Height - UiManager.ElementMargin - 2 * UiManager.ElementPadding - 1);
            UiManager.Gfx->print(_enumNames[_lastValueDraw]);
        }
    }
    else if(!Visible && _lastDrawnVisible)      // clear only when the Visible property changes from true to false
    {
        _lastDrawnVisible = false;
        UiManager.Gfx->fillRect(LocX, LocY, Width, Height, UiManager.ColorBackground);
    }
}
 
template <class T>
void EnumIndicator<T>::RecalculateDimensions()
{
    Height = UiManager.FontHeight + 2 * UiManager.ElementPadding + 2 * UiManager.ElementMargin;
    
    uint16_t maxWidth = 0;
    for(int i = 0; i < _numEnumValues; i++)
    {
        int16_t x, y;
        uint16_t w, h;
        UiManager.Gfx->getTextBounds(_enumNames[i], 0, 0, &x, &y, &w, &h);
        if(w > maxWidth) { maxWidth = w; }
    }
    
    Width = maxWidth + 2 * UiManager.ElementPadding + 2 * UiManager.ElementMargin + 2; 
}