/// <summary>
/// Draws the slider arrows on both sides of the control.
/// </summary>
/// <param name="position">position value of the slider, lowest being at the bottom. The range
/// is between 0 and the controls height-9. The values will be adjusted if too large/small</param>
/// <param name="Unconditional">If Unconditional is true, the slider is drawn, otherwise some logic
/// is performed to determine is drawing is really neccessary.</param>
private void DrawSlider(Gdk.Window g, int position, bool Unconditional)
{
if (position < 0)
{
position = 0;
}
if (position > this.Allocation.Height - 9)
{
position = this.Allocation.Height - 9;
}
if (m_iMarker_Start_Y == position && !Unconditional) // If the marker position hasn't changed
{
return; // since the last time it was drawn and we don't HAVE to redraw
}
// then exit procedure
m_iMarker_Start_Y = position; // Update the controls marker position
this.ClearSlider(g); // Remove old slider
Gdk.GC gcfill = new Gdk.GC(g);
// Same gray color Photoshop uses
gcfill.RgbFgColor = GraphUtil.gdkColorFromWinForms(Color.FromArgb(116, 114, 106));
Gdk.GC gcborder = new Gdk.GC(g);
gcfill.RgbFgColor = GraphUtil.gdkColorFromWinForms(Color.White);
// Same gray color Photoshop uses
//Console.WriteLine( "position="+position );
Gdk.Point[] arrow = new Gdk.Point[7]; // GGG
arrow[0] = new Gdk.Point(1, position); // G G
arrow[1] = new Gdk.Point(3, position); // G G
arrow[2] = new Gdk.Point(7, position + 4); // G G
arrow[3] = new Gdk.Point(3, position + 8); // G G
arrow[4] = new Gdk.Point(1, position + 8); // G G
arrow[5] = new Gdk.Point(0, position + 7); // G G
arrow[6] = new Gdk.Point(0, position + 1); // G G
// GGG
g.DrawPolygon(gcfill, true, arrow); // Fill left arrow with white
g.DrawPolygon(gcborder, false, arrow); // Draw left arrow border with gray
// GGG
arrow[0] = new Gdk.Point(this.Allocation.Width - 2, position); // G G
arrow[1] = new Gdk.Point(this.Allocation.Width - 4, position); // G G
arrow[2] = new Gdk.Point(this.Allocation.Width - 8, position + 4); // G G
arrow[3] = new Gdk.Point(this.Allocation.Width - 4, position + 8); // G G
arrow[4] = new Gdk.Point(this.Allocation.Width - 2, position + 8); // G G
arrow[5] = new Gdk.Point(this.Allocation.Width - 1, position + 7); // G G
arrow[6] = new Gdk.Point(this.Allocation.Width - 1, position + 1); // G G
// GGG
g.DrawPolygon(gcfill, true, arrow); // Fill right arrow with white
g.DrawPolygon(gcborder, false, arrow); // Draw right arrow border with gray
}