/// <summary>
/// Draws the control.
/// </summary>
/// <param name="e">Provides data for the <c>System.Windows.Forms.Control.Paint</c> event.</param>
protected override void OnPaint(PaintEventArgs e)
{
Graphics g = e.Graphics;
// High quality drawing.
g.SmoothingMode = SmoothingMode.AntiAlias;
// Define a tweaked rectangle for that the border was visible.
Rectangle tweakedRectangle = new Rectangle(
this.ClientRectangle.X,
this.ClientRectangle.Y,
this.ClientRectangle.Width - PEN_WIDTH,
this.ClientRectangle.Height - PEN_WIDTH
);
if (this.Orientation == NuGenOrientationStyle.Vertical)
{
g.TranslateTransform(0, tweakedRectangle.Height);
g.RotateTransform(-90);
int w = 0;
w = tweakedRectangle.Width;
tweakedRectangle.Width = tweakedRectangle.Height;
tweakedRectangle.Height = w;
}
/*
* Background.
*/
if (this.BackgroundImage == null)
{
switch (this.BackgroundStyle)
{
case NuGenBackgroundStyle.Gradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackGradientEndColor),
90
))
{
g.FillRectangle(lgb, tweakedRectangle);
}
break;
case NuGenBackgroundStyle.VerticalGradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackGradientEndColor),
360
))
{
g.FillRectangle(lgb, tweakedRectangle);
}
break;
case NuGenBackgroundStyle.Tube:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackTubeGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackTubeGradientEndColor),
90
))
{
ColorBlend colorBlend = new ColorBlend(3);
colorBlend.Colors = new Color[] {
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackTubeGradientEndColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackTubeGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.BackgroundTransparency), this.BackTubeGradientEndColor)
};
colorBlend.Positions = new float[] { 0.0f, 0.5f, 1.0f };
lgb.InterpolationColors = colorBlend;
g.FillRectangle(lgb, tweakedRectangle);
}
break;
}
}
else
{
if (this.StretchImage)
{
g.DrawImage(
this.BackgroundImage,
tweakedRectangle,
0,
0,
this.BackgroundImage.Width,
this.BackgroundImage.Height,
GraphicsUnit.Pixel,
NuGenControlPaint.GetTransparentImageAttributes(this.BackgroundTransparency, false)
);
}
else
{
g.DrawImage(
this.BackgroundImage,
tweakedRectangle,
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width,
tweakedRectangle.Height,
GraphicsUnit.Pixel,
NuGenControlPaint.GetTransparentImageAttributes(this.BackgroundTransparency, true)
);
}
}
/*
* Foreground.
*/
switch (this.ForegroundStyle)
{
case NuGenBackgroundStyle.Constant:
using (SolidBrush sb = new SolidBrush(this.ForeColor))
{
g.FillRectangle(sb, new RectangleF(
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width / this.Maximum * this.Value,
tweakedRectangle.Height)
);
}
break;
case NuGenBackgroundStyle.Gradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.GradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.GradientEndColor),
90))
{
g.FillRectangle(lgb, new RectangleF(
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width / (float)this.Maximum * this.Value,
tweakedRectangle.Height)
);
}
break;
case NuGenBackgroundStyle.VerticalGradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.GradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.GradientEndColor),
360
))
{
g.FillRectangle(lgb, new RectangleF(
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width / this.Maximum * this.Value,
tweakedRectangle.Height)
);
}
break;
case NuGenBackgroundStyle.Tube:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.TubeGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.TubeGradientEndColor),
90
))
{
ColorBlend colorBlend = new ColorBlend(3);
colorBlend.Colors = new Color[] {
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.TubeGradientEndColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.TubeGradientStartColor),
Color.FromArgb(NuGenControlPaint.GetAlphaChannel(this.ForegroundTransparency), this.TubeGradientEndColor)
};
colorBlend.Positions = new float[] { 0.0f, 0.5f, 1.0f };
lgb.InterpolationColors = colorBlend;
g.FillRectangle(lgb, new RectangleF(
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width / this.Maximum * this.Value,
tweakedRectangle.Height)
);
}
break;
}
/*
* TickLine.
*/
if (this.TickLine && this.PreviousMaximum != 0.0f && this.PreviousMaximum != this.Maximum && this.PreviousMaximum != this.Value)
{
if (this.Orientation == NuGenOrientationStyle.Horizontal)
{
NuGenControlPaint.DrawReversibleLine(
g,
(int)((float)this.ClientRectangle.Width / this.Maximum * this.PreviousMaximum),
this.ClientRectangle.Top + PEN_WIDTH,
(int)((float)this.ClientRectangle.Width / this.Maximum * this.PreviousMaximum),
this.ClientRectangle.Bottom - PEN_WIDTH * 2
);
}
else
{
NuGenControlPaint.DrawReversibleLine(
g,
this.ClientRectangle.Left + PEN_WIDTH * 2,
(int)((float)this.ClientRectangle.Height - (float)this.ClientRectangle.Height / this.Maximum * this.PreviousMaximum),
this.ClientRectangle.Right - PEN_WIDTH * 2,
(int)((float)this.ClientRectangle.Height - (float)this.ClientRectangle.Height / this.Maximum * this.PreviousMaximum)
);
}
}
/*
* Border.
*/
switch (this.BorderStyle)
{
case NuGenBorderStyle.Dashed:
case NuGenBorderStyle.Dotted:
case NuGenBorderStyle.Solid:
Rectangle borderRectangle = new Rectangle(
tweakedRectangle.Left,
tweakedRectangle.Top,
tweakedRectangle.Right + PEN_WIDTH,
tweakedRectangle.Bottom + PEN_WIDTH
);
NuGenControlPaint.DrawBorder(g, borderRectangle, NuGenControlPaint.ColorFromArgb(this.ForegroundTransparency, this.BorderColor), this.BorderStyle);
break;
default:
g.ResetTransform();
NuGenControlPaint.DrawBorder(g, this.ClientRectangle, NuGenControlPaint.ColorFromArgb(this.ForegroundTransparency, this.BorderColor), this.BorderStyle);
break;
}
/*
* Grayscale.
*/
if (this.Enabled == false)
{
Image img = NuGenControlPaint.CreateBitmapFromGraphics(g, this.ClientRectangle);
if (this.Orientation == NuGenOrientationStyle.Vertical)
{
g.ResetTransform();
}
ControlPaint.DrawImageDisabled(g, img, 0, 0, this.BackColor);
}
}
/*
* RenderUsingGdiPlus
*/
/// <summary>
/// Renders this <see cref="T:Genetibase.UI.NuGenMeters.NuGenPushGraphBar"/> using GDI+ algorythms.
/// </summary>
/// <param name="g">Specifies a GDI+ drawing surface.</param>
protected virtual void RenderUsingGdiPlus(Graphics g)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
// High quality drawing.
g.SmoothingMode = SmoothingMode.AntiAlias;
Rectangle tweakedRectangle = new Rectangle(
this.ClientRectangle.X,
this.ClientRectangle.Y,
this.ClientRectangle.Width - PEN_WIDTH,
this.ClientRectangle.Height - PEN_WIDTH * 3
);
/*
* Background.
*/
if (this.BackgroundImage == null)
{
switch (this.BackgroundStyle)
{
case NuGenBackgroundStyle.Gradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackGradientStartColor),
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackGradientEndColor),
90
))
{
g.FillRectangle(lgb, this.ClientRectangle);
}
break;
case NuGenBackgroundStyle.Tube:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackTubeGradientStartColor),
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackTubeGradientEndColor),
90
))
{
ColorBlend colorBlend = new ColorBlend(3);
colorBlend.Colors = new Color[] {
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackTubeGradientEndColor),
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackTubeGradientStartColor),
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackTubeGradientEndColor)
};
colorBlend.Positions = new float[] { 0.0f, 0.5f, 1.0f };
lgb.InterpolationColors = colorBlend;
g.FillRectangle(lgb, this.ClientRectangle);
}
break;
case NuGenBackgroundStyle.VerticalGradient:
using (LinearGradientBrush lgb = new LinearGradientBrush(
tweakedRectangle,
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackGradientStartColor),
NuGenControlPaint.ColorFromArgb(this.BackgroundTransparency, this.BackGradientEndColor),
360
))
{
g.FillRectangle(lgb, this.ClientRectangle);
}
break;
}
}
else
{
if (this.StretchImage)
{
g.DrawImage(
this.BackgroundImage,
tweakedRectangle,
0,
0,
this.BackgroundImage.Width,
this.BackgroundImage.Height,
GraphicsUnit.Pixel,
NuGenControlPaint.GetTransparentImageAttributes(this.BackgroundTransparency, false)
);
}
else
{
g.DrawImage(
this.BackgroundImage,
tweakedRectangle,
tweakedRectangle.X,
tweakedRectangle.Y,
tweakedRectangle.Width,
tweakedRectangle.Height,
GraphicsUnit.Pixel,
NuGenControlPaint.GetTransparentImageAttributes(this.BackgroundTransparency, true)
);
}
}
/*
* Grid.
*/
if (this.ShowGrid)
{
this.DrawGridGdiPlus(g, tweakedRectangle, NuGenControlPaint.ColorFromArgb(this.GridTransparency, this.GridColor), this.GridStep);
}
/*
* Graph.
*/
this.DrawGraphGdiPlus(g, tweakedRectangle);
/*
* Border.
*/
NuGenControlPaint.DrawBorder(g, this.ClientRectangle, NuGenControlPaint.ColorFromArgb(this.ForegroundTransparency, this.BorderColor), this.BorderStyle);
/*
* Grayscale.
*/
if (this.Enabled == false)
{
Image img = NuGenControlPaint.CreateBitmapFromGraphics(g, this.ClientRectangle);
ControlPaint.DrawImageDisabled(g, img, 0, 0, this.BackColor);
}
}
