GaugeBar.h

#pragma once 
/*
  AWind.h - Arduino window library support for Color TFT LCD Boards
  Copyright (C)2015 Andrei Degtiarev. All right reserved
  

  You can always find the latest version of the library at 
  https://github.com/AndreiDegtiarev/AWind


  This library is free software; you can redistribute it and/or
  modify it under the terms of the CC BY-NC-SA 3.0 license.
  Please see the included documents for further information.

  Commercial use of this library requires you to buy a license that
  will allow commercial use. This includes using the library,
  modified or not, as a tool to sell products.

  The license applies to all part of the library including the 
  examples and tools supplied with the library.
*/
#include "Gauge.h"
#include "DecoratorPrimitives.h"
class GaugeBar : public Gauge
{
    Color _barColor;
public:
    DecoratorAxis *_axis; 

    GaugeBar(DecoratorAxis *axis,int left,int top,int width,int height)
        :Gauge(left,top,width,height),_axis(axis)
    {
        //Make copy of gauge decorators because of axis decorator
        SetDecorators(new DecoratorList(*GetDecorators())); 
        AddDecorator(axis);
        _barColor = Color::Red;
    }
    void SetBarColor(Color color)
    {
        _barColor = color;
    }

    void OnDraw(DC *dc)
    {
        //out<<"value :"<<_value<<endln;
        dc->SetFont(SmallFont);
        //float range=_maxValue-_minValue;
        float saling_factor=_axis->GetLength()/(_maxValue-_minValue);
        int right_offset = _axis->EstimateLeft(dc);
        int top = _axis->EstimateTop(dc);
        int bottom = _axis->EstimateBottom(dc);
        if (!_drawOnlyPointer)
            dc->DrawRoundRect(2, 2, right_offset - 1, Height() - 2);
        if (_axis->Orientation() == DecoratorAxis::VerticalLeft || _axis->Orientation() == DecoratorAxis::VerticalRight)
        {
            int dc_level = bottom - _value*saling_factor;
            if (_oldValue > _value)
            {
                dc->SetColor(_fillColor);
                dc->FillRoundRect(4, bottom - _oldValue*saling_factor, right_offset - 3, min(bottom, dc_level + 3));
            }
            dc->SetColor(_barColor);
            dc->FillRoundRect(4, dc_level, right_offset - 3, bottom);
        }
        else
        {
            bottom = Height() - 4;
            int dc_level = _value*saling_factor;
            if (_oldValue > _value)
            {
                dc->SetColor(_fillColor);
                dc->FillRoundRect(max(4, dc_level - 3), 4, _oldValue*saling_factor, bottom);
            }
            dc->SetColor(_barColor);
            dc->FillRoundRect(4, 4, dc_level, bottom);
        }
    }
};