/// <summary>
/// Redraws the whole barcode
/// </summary>
public override void RedrawAll()
{
Children.Clear();
double actualWidth = ActualWidth;
double actualHeight = ActualHeight;
if ((double.IsNaN(actualWidth)) || (actualWidth <= 0))
{
actualWidth = Width;
}
if ((double.IsNaN(actualHeight)) || (actualHeight <= 0))
{
actualHeight = Height;
}
if ((double.IsNaN(actualWidth)) || (actualWidth <= 0))
{
return;
}
if ((double.IsNaN(actualHeight)) || (actualHeight <= 0))
{
return;
}
Rect rectClient = new Rect(0, 0, actualWidth, actualHeight);
if (Value == null)
{
return;
}
string text = InlineHasValue.FormatValue(Value, Format);
if (String.IsNullOrEmpty(text))
{
return;
}
List <BarcodeCharInfo> charInfo;
List <int> codeSequence = GenerateCodeSequence(text, out charInfo);
if (codeSequence.Count <= 0)
{
return;
}
// override shown text
if ((Text != null) && (!String.IsNullOrEmpty(Text)))
{
text = Text;
}
int checkSum = 0;
double left = 0;
// measure barcode first
double startCharWidth = 0;
for (int i = 0; i < codeSequence.Count; i++)
{
double charWidth = DrawCharByIndex(null, left, 0, 1, codeSequence[i]);
if (i == 0)
{
startCharWidth = charWidth;
}
left += charWidth;
if (i == 0)
{
checkSum = codeSequence[0];
}
else
{
checkSum += codeSequence[i] * i;
}
}
double barcodeDataWidth = left - startCharWidth;
// draw check sum
left += DrawCharByIndex(null, left, 0, 1, (checkSum % 103)); // Check Sum
// draw stop char
left += DrawCharByIndex(null, left, 0, 1, 106); // Stop
double barcodeWidth = left;
Canvas canvas = new Canvas();
// show barcode text
Label labelText = null;
double textHeight = 0;
decimal labelScale = 1;
TransformGroup tgl = null;
if (ShowText)
{
labelText = new Label();
labelText.Content = text;
labelText.Padding = new Thickness(0.25); // HACK: something is not right here
labelText.FontFamily = FontFamily;
labelText.FontStretch = FontStretch;
labelText.FontStyle = FontStyle;
labelText.FontWeight = FontWeight;
labelText.FontSize = 1;
labelText.Measure(new Size(actualWidth, actualHeight));
labelScale = (decimal)rectClient.Width / (decimal)barcodeWidth * (decimal)barcodeDataWidth / (decimal)labelText.DesiredSize.Width;
textHeight = labelText.DesiredSize.Height * (double)labelScale;
// set new size of barcode text
tgl = new TransformGroup();
tgl.Children.Add(new ScaleTransform((double)labelScale, (double)labelScale));
labelText.RenderTransform = tgl;
}
// draw barcode now
left = 0;
for (int i = 0; i < codeSequence.Count; i++)
{
double lineHeight = 1;
double th = 0;
if (labelText != null)
{
th = labelText.DesiredSize.Height;
}
if ((ShowText) && (i > 0))
{
lineHeight = (rectClient.Height - (double)labelScale * th / 2) / rectClient.Height;
}
double charWidth = DrawCharByIndex(canvas, left, 0, lineHeight, codeSequence[i]);
left += charWidth;
}
// draw check sum
left += DrawCharByIndex(canvas, left, 0, 1, (checkSum % 103)); // Check Sum
// draw stop char
left += DrawCharByIndex(canvas, left, 0, 1, 106); // Stop
// move text to right place
if ((ShowText) && (labelText != null))
{
tgl.Children.Add(new TranslateTransform(startCharWidth * rectClient.Width / left, rectClient.Height - textHeight));
Children.Add(labelText);
}
TransformGroup tg = new TransformGroup();
tg.Children.Add(new ScaleTransform(rectClient.Width / left, rectClient.Height - textHeight / 2));
tg.Children.Add(new TranslateTransform(rectClient.Left, rectClient.Top));
canvas.RenderTransform = tg;
Children.Add(canvas);
}
/// <summary>
/// Computes an aggregate value and formats it
/// </summary>
/// <param name="values">list of values</param>
/// <returns>calculated and formatted value</returns>
/// <exception cref="NotSupportedException">The aggregate value type {0} is not supported yet!</exception>
public string ComputeAndFormat(Dictionary <string, List <object> > values)
{
if ((values == null) || (values.Count <= 0))
{
return(_emptyValue);
}
if (!values.ContainsKey(_aggregateGroup))
{
return(_emptyValue);
}
decimal?result = null;
bool isTimeSpan = false;
long count = 0;
foreach (object value in values[_aggregateGroup])
{
count++;
if (_aggregateValueType == ReportAggregateValueType.Count)
{
continue; // count needs no real calculation
}
decimal thisValue;
if (value == null)
{
return(_errorValue);
}
if (value is TimeSpan)
{
thisValue = Convert.ToDecimal(((TimeSpan)value).Ticks);
isTimeSpan = true;
}
else
{
if (!Decimal.TryParse(value.ToString(), out thisValue))
{
return(_errorValue);
}
}
switch (_aggregateValueType)
{
case ReportAggregateValueType.Average:
case ReportAggregateValueType.Sum:
if (result == null)
{
result = thisValue; break;
}
result += thisValue;
break;
case ReportAggregateValueType.Maximum:
if (result == null)
{
result = thisValue; break;
}
if (thisValue > result)
{
result = thisValue;
}
break;
case ReportAggregateValueType.Minimum:
if (result == null)
{
result = thisValue; break;
}
if (thisValue < result)
{
result = thisValue;
}
break;
default:
throw new NotSupportedException(String.Format("The aggregate value type {0} is not supported yet!", _aggregateValueType.ToString()));
}
}
if (_aggregateValueType == ReportAggregateValueType.Count)
{
result = count;
}
if (result == null)
{
return(_emptyValue);
}
if (_aggregateValueType == ReportAggregateValueType.Average)
{
result /= count; // calculate average
}
if (isTimeSpan)
{
return(TimeSpan.FromTicks(Convert.ToInt64(result)).ToString()); //for timespans
}
return(InlineHasValue.FormatValue(result, Format));
}
