public void DmmMeasurement_RangeMilliToNone_Above()
{
var r = new DmmMeasurementRange("Current", -3, 0, DmmMeasurementType.CurrentDC);
var m = new DmmMeasurement(1000, r);
Assert.AreEqual(1000, m.Value.Coefficient);
Assert.AreEqual(0, m.Value.Exponent);
Assert.AreEqual("", m.Value.SIPrefix);
Assert.AreEqual("A", m.SIUnit);
}
public void DmmMeasurement_RangeMilliToNone_Below()
{
var r = new DmmMeasurementRange("Current", -3, 3, DmmMeasurementType.CurrentDC);
var m = new DmmMeasurement(0.0001M, r);
Assert.AreEqual(0.1M, m.Value.Coefficient);
Assert.AreEqual(-3, m.Value.Exponent);
Assert.AreEqual("m", m.Value.SIPrefix);
Assert.AreEqual("mA", m.SIUnit);
}
private void PaintDigits(Graphics graphics, int left, int top, DmmMeasurement measurement)
{
if (measurement != null)
{
int integralDigitCount;
var chars = GetChars(measurement.Value.Coefficient, out integralDigitCount);
var y = top + this.DigitNumberSize.Height / 2;
var x = left;
if ((integralDigitCount > 0) && (integralDigitCount < Settings.SidebarDigitCount)) //has dot
{
graphics.DrawString(".", this.DigitDotFont, SystemBrushes.GrayText, left + this.DigitMinusSize.Width + integralDigitCount * this.DigitNumberSize.Width + this.DigitDotSize.Width / 2, y, SFCenterMiddle);
}
for (int i = 0; i < (1 + Settings.SidebarDigitCount); i++)
{
var ch = chars[i];
switch (ch)
{
case '+': {
x += this.DigitMinusSize.Width;
} break;
case '-': {
var brush = (integralDigitCount > 0) ? SystemBrushes.InfoText : SystemBrushes.GrayText; //gray for OL
graphics.DrawString("-", this.DigitMinusFont, brush, x + this.DigitMinusSize.Width / 2, y, SFCenterMiddle);
x += this.DigitMinusSize.Width;
} break;
default: {
var font = (i <= integralDigitCount) ? this.DigitIntegralFont : this.DigitFractionalFont;
var brush = (i <= integralDigitCount) ? SystemBrushes.InfoText : SystemBrushes.GrayText;
graphics.DrawString(chars[i].ToString(), font, brush, x + this.DigitNumberSize.Width / 2, y, SFCenterMiddle);
x += this.DigitNumberSize.Width + ((i == integralDigitCount) ? this.DigitDotSize.Width : 0);
} break;
}
}
if (measurement.ExtraMarking != null)
{
graphics.DrawString(measurement.ExtraMarking, this.DigitMarkingFont, SystemBrushes.InfoText, left + this.DisplaySize.Width, y - this.DisplaySize.Height / 5, SFRightMiddle);
}
graphics.DrawString(measurement.SIUnit, this.DigitUnitFont, SystemBrushes.InfoText, left + this.DisplaySize.Width, y + this.DisplaySize.Height / 10, SFRightMiddle);
}
}
