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| using System; using System.Collections; using System.ComponentModel; using System.Drawing; using System.Drawing.Drawing2D; using System.Data; using System.Windows.Forms;
namespace ProgressEx { [DefaultProperty("PercentageMode")] public class ProgressEx : System.Windows.Forms.UserControl { private int maxValue; private int minValue; private float _value; private int stepValue; private float percentageValue; private int drawingWidth; private Color drawingColor; private ColorBlend gradientBlender; private PercentageDrawingMode percentageDrawingMode; private SolidBrush writingBrush; private Font writingFont; private LinearGradientBrush _Drawer; public enum PercentageDrawingMode:int { None=0, Center, Movable } private System.ComponentModel.Container components = null; public ProgressEx() { InitializeComponent(); maxValue = this.Width; minValue = 0; stepValue = 1; percentageDrawingMode = PercentageDrawingMode.Center;
gradientBlender = new ColorBlend(3); gradientBlender.Positions = new float[]{0.0F, 0.5F, 1.0F};
DrawingColor = Color.Blue; writingBrush = new SolidBrush(Color.Black); writingFont = new Font("Arial", 10, FontStyle.Bold);
_Drawer = new LinearGradientBrush( this.ClientRectangle, Color.Black, Color.White, LinearGradientMode.Vertical); this.SetStyle(ControlStyles.UserPaint | ControlStyles.AllPaintingInWmPaint | ControlStyles.DoubleBuffer, true); this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.BackColor = Color.Transparent;
}
protected override void Dispose( bool disposing ) { if( disposing ) { if(components != null) { components.Dispose(); } } writingBrush.Dispose(); writingFont.Dispose(); base.Dispose( disposing ); }
#region Component Designer generated code private void InitializeComponent() { this.BackColor = System.Drawing.SystemColors.Control; this.Name = "ProgressEx"; this.Size = new System.Drawing.Size(256, 24); this.Resize += new System.EventHandler(this.ProgressEx_Resize); this.Paint += new System.Windows.Forms.PaintEventHandler(this.ProgressEx_Paint);
} #endregion
private void ProgressEx_Resize(object sender, System.EventArgs e) { if(this.Height > 40) this.Height = 40; if(this.Height < 15) this.Height = 15; if(this.Width < 50) this.Width = 50; this.Refresh(); }
private void ProgressEx_Paint(object sender, System.Windows.Forms.PaintEventArgs e) { if(_value != 0 & _value <= maxValue) { drawingWidth=(int)(this.Width * _value) / (maxValue - minValue); percentageValue = (_value / maxValue) * 100; _Drawer.InterpolationColors = gradientBlender;
e.Graphics.FillRectangle(_Drawer, 0, 0, drawingWidth, this.Height);
if(percentageDrawingMode != PercentageDrawingMode.None) { string st=((int)percentageValue).ToString() + "%"; SizeF s=e.Graphics.MeasureString(st,writingFont);
if(percentageDrawingMode == PercentageDrawingMode.Movable) { e.Graphics.DrawString( st,writingFont, writingBrush, drawingWidth, (e.ClipRectangle.Height / 2 - s.Height / 2)); } else if(percentageDrawingMode == PercentageDrawingMode.Center) { e.Graphics.DrawString(st, writingFont, writingBrush, new PointF((e.ClipRectangle.Width / 2 - s.Width / 2), (e.ClipRectangle.Height / 2 - s.Height / 2))); } } } } public void StepForword() { if((_value + stepValue) < maxValue) { _value += stepValue; this.Refresh(); } else { _value = maxValue; this.Refresh(); } } public void StepBackword() { if((_value - stepValue) > minValue) { _value -= stepValue; this.Refresh(); } else { _value = minValue; this.Refresh(); } }
[Category("Behavior"),Description("Specify how to display the Percentage value")] public PercentageDrawingMode PercentageMode { get { return percentageDrawingMode; } set { percentageDrawingMode = value; this.Refresh(); } } [Category("Appearance"),Description("Specify the color used to draw the progress activities")] public Color DrawingColor { get { return drawingColor; } set { drawingColor = value; gradientBlender.Colors[0] = ControlPaint.Dark(value); gradientBlender.Colors[1] = ControlPaint.Light(value); gradientBlender.Colors[2] = ControlPaint.Dark(value); this.Refresh(); } } [Category("Layout"),Description("Specify the maximum value the progress can increased to")] public int Maximum { get { return maxValue; } set { maxValue = value; this.Refresh(); } } [Category("Layout")] public int Minimum { get { return minValue; } set { minValue = value; this.Refresh(); } } [Category("Layout")] public int Step { get { return stepValue; } set { stepValue = value; this.Refresh(); } } [Category("Layout")] public int Value { get { return (int)_value; } set { if(value > maxValue | value < minValue) { throw new ArgumentException("Invalid value used"); } _value = value; this.Refresh(); } } public int Percent { get { return (int)Math.Round(percentageValue); } } [Category("Appearance"),Description("Specify the color used to draw the Percentage value")] public override Color ForeColor { get { return writingBrush.Color; } set { writingBrush.Color = value; this.Invalidate(false); } }
} } |