private void PaintKnob(PaintEventArgs e, Rectangle pos, int pixelPos)
{
SolidBrush brushRange = new SolidBrush(_colorRange);
var rectanglePoints = new Point[] {
pos.Location, //topL
new Point(pos.X + pos.Width, pos.Y), //topR
new Point(pos.X + pos.Width, pos.Y + pos.Height), //bottR
new Point(pos.X, pos.Y + pos.Height) //BottL
};
//Fill range between knobs
e.Graphics.FillPolygon(brushRange, rectanglePoints);
ComponentDrawer.Draw3DRectangleInverted(e, pos);
//Draw line in the middle of Knoob
if (_orientationBar == RangeBarOrientation.Horizontal)
{
ComponentDrawer.Draw3DLineInField(e, pos);
}
else
{
ComponentDrawer.Draw3DLineInField(e, pos, false);
}
}
private void DrawBarField(PaintEventArgs e)
{
var componEdgeToSkalaOffset = 9;
Point backgrTopL;
Point backgrTopR = new Point();
Point backgrBottL = new Point();
Point backgrBottR;
if (_orientationBar == RangeBarOrientation.Horizontal)
{
backgrTopL = new Point(componEdgeToSkalaOffset, TopOffsetToBackField);
backgrTopR.X = LocalWidth - componEdgeToSkalaOffset;
backgrBottL.Y = BottomOffsetToBackField;
}
else
{
backgrTopL = new Point(TopOffsetToBackField, componEdgeToSkalaOffset);
backgrTopR.X = BottomOffsetToBackField;
backgrBottL.Y = LocalWidth - componEdgeToSkalaOffset;
}
backgrTopR.Y = backgrTopL.Y;
backgrBottL.X = backgrTopL.X;
backgrBottR = new Point(backgrTopR.X, backgrBottL.Y);
ComponentDrawer.Draw3DRectangle(e, backgrTopL, backgrTopR, backgrBottL, backgrBottR, FieldImage);
}
private void ShowCurrPosValueIfNeeded(PaintEventArgs e, int tickOffset)
{
if (ValueShownOnKnobsMove == false)
{
return;
}
int y = 0;
switch (ScaleOrientation)
{
case TopBottomOrientation.Bottom:
y = tickOffset + _tickHeight;
break;
case TopBottomOrientation.Top:
y = LocalHeight - TopOffsetToBackField + 6;
break;
case TopBottomOrientation.Both:
y = LocalHeight - PixelsOffsetForNumber;
break;
}
StringFormat strformat = new StringFormat();
strformat.Alignment = StringAlignment.Center;
strformat.LineAlignment = StringAlignment.Near;
if (_lKnobMoveGoing)
{
if (_orientationBar == RangeBarOrientation.Horizontal)
{
ComponentDrawer.DrawString(e, _rangeMin.ToString(), _knobWidth, _pixelPosL, y, strformat);
}
else
{
strformat.Alignment = StringAlignment.Near;
strformat.LineAlignment = StringAlignment.Center;
ComponentDrawer.DrawString(e, _rangeMin.ToString(), _knobWidth, y + 2, _pixelPosL, strformat);
}
}
if (_rKnobIsMoving)
{
if (_orientationBar == RangeBarOrientation.Horizontal)
{
ComponentDrawer.DrawString(e, _rangeMax.ToString(), _knobWidth, _pixelPosR, y, strformat);
}
else
{
strformat.Alignment = StringAlignment.Near;
strformat.LineAlignment = StringAlignment.Center;
ComponentDrawer.DrawString(e, _rangeMax.ToString(), _knobWidth, y, _pixelPosR, strformat);
}
}
}
private void DrawSkala(PaintEventArgs e)
{
int skalaTopOffset, skalaBottomOffset;//Y for horiz; X for vert;
CalcSkalaTopAndBottom(out skalaTopOffset, out skalaBottomOffset);
Rectangle rectTopOrLeft = new Rectangle();
Rectangle rectBottOrRight = new Rectangle();
if (_orientationBar == RangeBarOrientation.Horizontal)
{
if (_orientationScale == TopBottomOrientation.Top || _orientationScale == TopBottomOrientation.Both)
{
rectTopOrLeft = new Rectangle(9, skalaTopOffset, Width - 18, _tickHeight);
ComponentDrawer.DrawSkala(e, rectTopOrLeft, _numAxisDivision, false);
}
if (_orientationScale == TopBottomOrientation.Bottom || _orientationScale == TopBottomOrientation.Both)
{
rectBottOrRight = new Rectangle(9, skalaBottomOffset, Width - 18, _tickHeight);
ComponentDrawer.DrawSkala(e, rectBottOrRight, _numAxisDivision, false);
}
}
else // Vertical bar
{
if (_orientationScale == TopBottomOrientation.Top || _orientationScale == TopBottomOrientation.Both)
{
rectTopOrLeft = new Rectangle(skalaTopOffset, 9, _tickHeight, Height - 18);
ComponentDrawer.DrawSkala(e, rectTopOrLeft, _numAxisDivision);
}
if (_orientationScale == TopBottomOrientation.Bottom || _orientationScale == TopBottomOrientation.Both)
{
rectBottOrRight = new Rectangle(skalaBottomOffset, 9, _tickHeight, Height - 18);
ComponentDrawer.DrawSkala(e, rectBottOrRight, _numAxisDivision);
}
}
ShowCurrPosValueIfNeeded(e, skalaTopOffset);
}
private void DrawSelectedRegion(PaintEventArgs e)
{
Rectangle rect = new Rectangle();
if (_orientationBar == RangeBarOrientation.Horizontal)
{
rect = new Rectangle(_pixelPosL, TopOffsetToBackField + 1,
_pixelPosR - _pixelPosL + 1, BottomOffsetToBackField - TopOffsetToBackField - 1);
}
else
{
rect = new Rectangle(TopOffsetToBackField + 1, _pixelPosL, Width - TopOffsetToBackField * 2 - 1,
_pixelPosR - _pixelPosL + 1);
}
if (Enabled)
{
ComponentDrawer.DrawFilledRect(e, rect, _colorInner);
}
else
{
ComponentDrawer.DrawFilledRect(e, rect, Color.FromKnownColor(KnownColor.InactiveCaption));
}
}