protected virtual void OnPaint(DrawExtensionEventArgs e)
{
if (this.Paint != null)
{
this.Paint(this, e);
}
}
internal void Draw(Graphics gr, Color parentColor)
{
bool flag = true;
Region clip = null;
DrawExtensionEventArgs e = null;
Graphics backgroundBuffer = this.GetBackgroundBuffer();
if (backgroundBuffer != null)
{
if (this._backgroundValid)
{
flag = false;
}
else
{
e = new DrawExtensionEventArgs(backgroundBuffer, new Rectangle(0, 0, this._bounds.Width, this._bounds.Height), parentColor);
}
}
else
{
clip = gr.Clip;
Region helperRegion = Resco.Controls.ScrollBar.ScrollBar.GetHelperRegion();
helperRegion.MakeEmpty();
helperRegion.Union(this._bounds);
gr.Clip = helperRegion;
e = new DrawExtensionEventArgs(gr, this._bounds, parentColor);
}
if (flag)
{
this.OnPaint(e);
this._backgroundValid = e.Graphics == backgroundBuffer;
}
if ((e == null) || (e.Graphics == backgroundBuffer))
{
gr.DrawImage(this._backgroundBufferBitmap, this._bounds.Left, this._bounds.Top);
}
if (clip != null)
{
gr.Clip = clip;
}
}
protected virtual void OnPaint(DrawExtensionEventArgs e)
{
if (this.Paint != null)
{
this.Paint(this, e);
}
}
internal void Draw(Graphics gr, Color parentColor)
{
bool flag = true;
Region clip = null;
DrawExtensionEventArgs e = null;
Graphics backgroundBuffer = this.GetBackgroundBuffer();
if (backgroundBuffer != null)
{
if (this._backgroundValid)
{
flag = false;
}
else
{
e = new DrawExtensionEventArgs(backgroundBuffer, new Rectangle(0, 0, this._bounds.Width, this._bounds.Height), parentColor);
}
}
else
{
clip = gr.Clip;
Region helperRegion = Resco.Controls.ScrollBar.ScrollBar.GetHelperRegion();
helperRegion.MakeEmpty();
helperRegion.Union(this._bounds);
gr.Clip = helperRegion;
e = new DrawExtensionEventArgs(gr, this._bounds, parentColor);
}
if (flag)
{
this.OnPaint(e);
this._backgroundValid = e.Graphics == backgroundBuffer;
}
if ((e == null) || (e.Graphics == backgroundBuffer))
{
gr.DrawImage(this._backgroundBufferBitmap, this._bounds.Left, this._bounds.Top);
}
if (clip != null)
{
gr.Clip = clip;
}
}
