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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
namespace FloodFill2
{
public partial class TextBoxSlider : UserControl
{
public TextBoxSlider()
{
InitializeComponent();
UpdateText();
}
[Category("Behavior"), DefaultValue(0f)]
public float Value
{
get { return FromSliderValue(trackBar.Value); }
set { trackBar.Value = ToSliderValue(value); }
}
private int decimalPlaces;
[Category("Behavior"), DefaultValue(0f)]
public int DecimalPlaces
{
get { return decimalPlaces; }
set { decimalPlaces = value; }
}
[Category("Behavior"), DefaultValue(100f)]
public float Maximum
{
get { return FromSliderValue(trackBar.Maximum); }
set { trackBar.Maximum = ToSliderValue(value); }
}
[Category("Behavior"), DefaultValue(0f)]
public float Minimum
{
get { return FromSliderValue(trackBar.Minimum); }
set { trackBar.Minimum = ToSliderValue(value); }
}
[Category("Behavior"), DefaultValue(1f)]
public float SmallChange
{
get { return FromSliderValue(trackBar.SmallChange); }
set { trackBar.SmallChange = ToSliderValue(value); }
}
[Category("Behavior"), DefaultValue(5f)]
public float LargeChange
{
get { return FromSliderValue(trackBar.LargeChange); }
set { trackBar.LargeChange = ToSliderValue(value); }
}
[Category("Appearance"), DefaultValue(1f)]
public float TickFrequency
{
get { return FromSliderValue(trackBar.TickFrequency); }
set { trackBar.TickFrequency = ToSliderValue(value); }
}
[Category("Appearance"), DefaultValue(TickStyle.BottomRight)]
public TickStyle TickStyle
{
get { return trackBar.TickStyle; }
set { trackBar.TickStyle = value; }
}
public override string Text
{
get
{
return textBox.Text;
}
set
{
textBox.Text = value;
}
}
int ToSliderValue(float val)
{
float fval=(float)(val * Math.Pow(10, decimalPlaces));
if(fval>(float)int.MaxValue)
throw new ArgumentOutOfRangeException();
return (int) fval;
}
float FromSliderValue(int val)
{
return (float)(((float)val) * Math.Pow(10, -decimalPlaces));
}
private void textBox_TextChanged(object sender, EventArgs e)
{
float fVal;
if (float.TryParse(textBox.Text, out fVal))
{
if (fVal > Maximum || fVal < Minimum)
SetTextBoxValidState(false);
else
{
Value = fVal;
SetTextBoxValidState(true);
}
}
else
SetTextBoxValidState(false);
OnTextChanged(e);
}
bool textBoxValid = true;
private void SetTextBoxValidState(bool valid)
{
textBoxValid = valid;
if (valid)
textBox.BackColor = Color.White;
else
textBox.BackColor = Color.FromArgb(255, 220, 220);
}
public event EventHandler ValueChanged;
private void trackBar_ValueChanged(object sender, EventArgs e)
{
UpdateText();
if (ValueChanged != null)
ValueChanged(this, e);
}
void UpdateText()
{
//Use roundtrip formatting specifier so that the string value
//will be the same when converted roundtrip.
Text = Value.ToString("r");
}
private void textBox_Leave(object sender, EventArgs e)
{
if (!textBoxValid)
UpdateText();
}
public event EventHandler TrackBarScroll;
private void trackBar_Scroll(object sender, EventArgs e)
{
if (TrackBarScroll != null)
TrackBarScroll(this, e);
}
}
}
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My main goal as a developer is to improve the way software is designed, and how it interacts with the user. I like designing software best, but I also like coding and documentation. I especially like to work with user interfaces and graphics.
I have extensive knowledge of the .NET Framework, and like to delve into its internals. I specialize in working with VG.net and MyXaml. I also like to work with ASP.NET, AJAX, and DHTML.