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using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace Histacom2.Engine.UI
{
public class ProgressBar : Control
{
private Color _pColor = Color.DarkBlue;
private ProgressBarStyle _style = ProgressBarStyle.Continuous;
private Timer RedrawTimer = null;
public Color ProgressColor
{
get
{
return _pColor;
}
set
{
_pColor = value; Refresh();
}
}
public ProgressBarStyle Style
{
get
{
return _style;
}
set
{
_style = value; Refresh();
}
}
private double _max = 100.0;
private double _min = 0.0;
public double Maximum
{
get
{
return _max;
}
set
{
_max = value; Refresh();
}
}
public double Minimum
{
get
{
return _min;
}
set
{
_min = value; Refresh();
}
}
private int _blockWidth = 14;
public int BlockWidth
{
get
{
return _blockWidth;
}
set
{
_blockWidth = value;
Refresh();
}
}
private int _blockSpacing = 2;
public int BlockSpacing
{
get
{
return _blockSpacing;
}
set
{
_blockSpacing = value;
Refresh();
}
}
public ProgressBar() : base()
{
MarqueeWidth = 125;
BlockWidth = 20;
BlockSpacing = 5;
Minimum = 0.00;
Maximum = 100.0;
Style = ProgressBarStyle.Continuous;
ProgressColor = Color.DarkBlue;
RedrawTimer = new Timer();
RedrawTimer.Tick += (o, a) =>
{
if (this.Style == ProgressBarStyle.Marquee)
{
if (_marqueePos >= this.Width)
_marqueePos = 0;
else
_marqueePos++;
this.Refresh();
}
};
RedrawTimer.Interval = 50;
}
private double _value = 0.00;
public double Value
{
get
{
return _value;
}
set
{
if (value < Minimum || value > Maximum)
throw new ArgumentOutOfRangeException("The value is outside the minimum and maximum range.");
this.Refresh();
_value = value;
}
}
private int _marqueeWidth = 14;
public int MarqueeWidth
{
get
{
return _marqueeWidth;
}
set
{
_marqueeWidth = value;
Refresh();
}
}
private bool _showText = false;
public bool ShowText
{
get
{
return _showText;
}
set
{
_showText = value;
Refresh();
}
}
protected override void OnVisibleChanged(EventArgs e)
{
if (Visible)
RedrawTimer.Start();
else
RedrawTimer.Stop();
}
private int _marqueePos = 0;
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
var g = e.Graphics;
g.Clear(BackColor);
//Stolen from the ShiftOS code :3
switch (Style)
{
case ProgressBarStyle.Continuous:
double width = linear(this.Value, this.Minimum, this.Maximum, 0, this.Width);
g.FillRectangle(new SolidBrush(ProgressColor), new RectangleF(0, 0, (float)width, this.Height));
break;
case ProgressBarStyle.Blocks:
int block_count = this.Width / (this.BlockWidth + this.BlockSpacing);
int blocks = (int)linear(this.Value, this.Minimum, this.Maximum, 0, block_count);
for (int i = 0; i < blocks - 1; i++)
{
int position = i * (BlockWidth + BlockSpacing);
g.FillRectangle(new SolidBrush(ProgressColor), new Rectangle(position, 0, BlockWidth, this.Height));
}
break;
case ProgressBarStyle.Marquee:
g.FillRectangle(new SolidBrush(ProgressColor), new Rectangle(_marqueePos, 0, MarqueeWidth, this.Height));
break;
}
if (ShowText)
{
var f = this.Font;
var t = this.Text;
var size = g.MeasureString(t, f);
var loc = new PointF(
(this.Width - size.Width) / 2,
(this.Height - size.Height) / 2
);
var color = this.ForeColor;
g.DrawString(t, f, new SolidBrush(color), loc);
}
}
///<summary>
/// Simple linear interpolation algorithm. (http://stackoverflow.com/questions/12838007/c-sharp-linear-interpolation)
/// </summary>
private double linear(double x, double x0, double x1, double y0, double y1)
{
if ((x1 - x0) == 0)
{
return (y0 + y1) / 2;
}
return y0 + (x - x0) * (y1 - y0) / (x1 - x0);
}
}
}
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