/// <summary>
/// Renders the notes to the drawingContext. The notes gets scaled to the available height and width displaying only
/// values between minDisplayValueX and maxDisplayValueX, if the x-values are sorted.
/// </summary>
protected override void OnCreateVisual(DrawingContext drawingContext, double width, double height, DrawingVisual drawingVisual)
{
if (glyphDrawers == null || fontFamilytracked != chart.FontFamily || fontSizeTracked != chart.FontSize)
{
fontFamilytracked = chart.FontFamily;
fontSizeTracked = chart.FontSize;
if (glyphDrawers == null)
{
glyphDrawers = new GlyphDrawer[fontDefinitions.Length];
}
for (int fontDefinitionIndex = 0; fontDefinitionIndex < fontDefinitions.Length; fontDefinitionIndex++)
{
FontDefinition fontDefinition = fontDefinitions[fontDefinitionIndex];
glyphDrawers[fontDefinitionIndex] = new GlyphDrawer(
fontDefinition.FontFamily ?? chart.FontFamily,
fontDefinition.FontStyle ?? chart.FontStyle,
fontDefinition.FontWeight ?? chart.FontWeight,
fontDefinition.FontStretch ?? chart.FontStretch,
VisualTreeHelper.GetDpi(drawingVisual).PixelsPerDip);
}
}
double minDisplayValueX = MinDisplayValues[DimensionX];
double maxDisplayValueX = MaxDisplayValues[DimensionX];
double minDisplayValueY = MinDisplayValues[DimensionY];
double maxDisplayValueY = MaxDisplayValues[DimensionY];
int chartNotesLength = chartNotes.Length;
for (int chartNotesIndex = 0; chartNotesIndex < chartNotesLength; chartNotesIndex++)
{
ChartNote chartNote = chartNotes[chartNotesIndex];
double chartNotesX = chartNote.Values[0];
if (chartNotesX < minDisplayValueX)
{
continue;
}
double chartNotesY = chartNote.Values[1];
FontDefinition fontDefinition = fontDefinitions[chartNote.FontDefinitionId];
if ((minDisplayValueY <= chartNotesY && chartNotesY <= maxDisplayValueY) || double.IsInfinity(chartNotesY))
{
Point chartNotePoint = TranslateValueXYToPoint(chartNotesX, chartNotesY, width, height);
if (double.IsPositiveInfinity(chartNotesY))
{
//draw at top
const double fontOffset = 1.3; //need to move the letters a bit down
chartNotePoint.Y = fontOffset * (fontDefinition.FontSize ?? chart.FontSize);
}
else if (double.IsPositiveInfinity(chartNotesY))
{
//draw at bottom
chartNotePoint.Y = height;
}
glyphDrawers[chartNote.FontDefinitionId].Write(drawingContext, chartNotePoint, chartNote.Note,
fontDefinition.FontSize ?? chart.FontSize, fontDefinition.FontBrush ?? chart.Foreground);
}
if (chartNotesX > maxDisplayValueX)
{
break;
}
}
}
private void fillDataSeries()
{
DateTime startTime = DateTime.Now.Date.AddYears(-1);
DateTime time = startTime;
double minutes = 60 * 24;
int stepsCount = 365;
var dataRecords = new DataRecord[stepsCount];
//count selected series and prepare values for data calculation
var serieValues = new double[seriesCountDraw];
var increments = new double[seriesCountDraw];
int selectSeriesCount = 0;
for (int seriesUIIndex = 0; seriesUIIndex < seriesCountUI; seriesUIIndex++)
{
serieValues[selectSeriesCount] = minNumbers[seriesUIIndex];
increments[selectSeriesCount] = (maxNumbers[seriesUIIndex] - serieValues[selectSeriesCount]) / (stepsCount - 1);
selectSeriesCount++;
if (seriesUIIndex == areaLineIndex)
{
//areaLine needs 2 series for drawing
serieValues[selectSeriesCount] = minNumbers[seriesUIIndex] * 0.8;
increments[selectSeriesCount] = (maxNumbers[seriesUIIndex] * 0.9 - serieValues[selectSeriesCount]) / (stepsCount - 1);
selectSeriesCount++;
}
}
//setup line settings
var seriesSettings = new SerieSetting <DataRecord> [selectSeriesCount];
var seriesBrushes = new Brush[] { Brushes.Green, Brushes.Blue, Brushes.Gray, /*area2*/ null };
int seriesSettingsIndex = 0;
for (int seriesUIIndex = 0; seriesUIIndex < seriesCountUI; seriesUIIndex++)
{
int lambdaIndex = seriesSettingsIndex; //we need to create a new instance within the loop, otherwise the lambda expression will use the latest value of seriesSettingsIndex (i.e. max(seriesSettingsIndex)), see C# reference "Outer Variables"
if (seriesUIIndex == areaLineIndex)
{
seriesSettings[seriesSettingsIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(), record.DataPoint[lambdaIndex] },
SerieStyleEnum.area1, 0, seriesBrushes[seriesUIIndex], 1, null);
seriesSettingsIndex++;
int lambdaIndex2 = lambdaIndex + 1;
seriesSettings[seriesSettingsIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(), record.DataPoint[lambdaIndex2] },
SerieStyleEnum.area2, 0, seriesBrushes[seriesUIIndex], 1, null);
seriesSettingsIndex++;
}
else
{
int group;
Brush fillBrush;
if (seriesUIIndex == lowerGraphLineIndex)
{
group = 1;
Color fillColor = Colors.LightSkyBlue;
fillColor.A = 128;
fillBrush = new SolidColorBrush(fillColor);
}
else
{
group = 0;
fillBrush = null;
}
seriesSettings[seriesSettingsIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(), record.DataPoint[lambdaIndex] },
SerieStyleEnum.line, group, seriesBrushes[seriesUIIndex], 2, fillBrush);
seriesSettingsIndex++;
}
}
//fill serie values into records
for (int stepIndex = 0; stepIndex < stepsCount; stepIndex++)
{
var recordValues = new double[selectSeriesCount];
for (int selectSeriesIndex = 0; selectSeriesIndex < selectSeriesCount; selectSeriesIndex++)
{
recordValues[selectSeriesIndex] = serieValues[selectSeriesIndex];
serieValues[selectSeriesIndex] += increments[selectSeriesIndex];
}
var dataRecord = new DataRecord(time, recordValues);
dataRecords[stepIndex] = dataRecord;
time = time.AddMinutes(minutes);
}
TestChart2Plots1X2YLegendsTraced.FillData <DataRecord>(dataRecords, seriesSettings);
FontDefinition[] fontDefinitions = new FontDefinition[] {
new FontDefinition(Brushes.DarkBlue, FontFamily, null, null, null, FontWeights.Bold),
new FontDefinition(Brushes.DarkRed, null, 18, null, FontStyles.Italic, FontWeights.Bold),
new FontDefinition(Brushes.DarkOrange, null, 32, FontStretches.Condensed, null, FontWeights.Normal),
};
ChartNote[] chartNotes = new ChartNote[stepsCount / 20];
time = startTime;
for (int chartNoteIndex = 0; chartNoteIndex < chartNotes.Length; chartNoteIndex++)
{
if (chartNoteIndex < 3)
{
chartNotes[chartNoteIndex] = new ChartNote(new double[] { time.ToDouble(), double.PositiveInfinity }, chartNoteIndex.ToString(), chartNoteIndex % 3);
}
else
{
chartNotes[chartNoteIndex] = new ChartNote(new double[] { time.ToDouble(), chartNoteIndex *10 }, chartNoteIndex.ToString(), chartNoteIndex % 3);
}
time = time.AddMinutes(20 * minutes);
}
TestChart2Plots1X2YLegendsTraced.AddNotes(chartNotes, fontDefinitions, true);
}
private void fillDataSeries()
{
DateTime startTime = DateTime.Now.Date.AddYears(-1);
DateTime time = startTime;
double minutes = 60 * 24;
int stepsCount = 365;
var dataRecords = new DataRecord[stepsCount];
var serieValues = new double[seriesCount];
var random = new Random();
//prepare values for data calculation
var serieIndex = 0;
var seriesSettings = new SerieSetting <DataRecord> [seriesCount];
var seriesBrushes = new Brush[] { new SolidColorBrush(Color.FromRgb(0x00, 0x00, 0x00)) };
var seriesFillBrushes = new Brush[] { Brushes.Green, Brushes.Blue, Brushes.Gray };
for (var groupIndex = 0; groupIndex < groupCount; groupIndex++)
{
var lambdaIndex = serieIndex; //A new instance within the loop is needed, otherwise the lambda expression will use the latest value of serieIndex (i.e. 12), see C# reference "Outer Variables"
seriesSettings[serieIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(),
record.DataPoint[lambdaIndex] },
SerieStyleEnum.line, groupIndex,
new SolidColorBrush(Color.FromRgb(0xA0, 0xA0, 0xA0)), 2,
new SolidColorBrush(Color.FromArgb(0x30, 0xA0, 0xA0, 0xA0)));
serieValues[serieIndex++] = random.NextDouble() * 100;
var lambdaIndex1 = serieIndex;
seriesSettings[serieIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(),
record.DataPoint[lambdaIndex1] },
SerieStyleEnum.line, groupIndex,
new SolidColorBrush(Color.FromRgb(0x80, 0x80, 0x80)), 2,
new SolidColorBrush(Color.FromArgb(0x30, 0x80, 0x80, 0x80)));
serieValues[serieIndex++] = random.NextDouble() * 100;
var lambdaIndex2 = serieIndex;
seriesSettings[serieIndex] =
new SerieSetting <DataRecord>(record => new double[] { record.Date.ToDouble(),
record.DataPoint[lambdaIndex2] },
SerieStyleEnum.line, groupIndex,
new SolidColorBrush(Color.FromRgb(0x00, 0x00, 0x00)), 2,
new SolidColorBrush(Color.FromArgb(0x30, 0x00, 0x00, 0x00)));
serieValues[serieIndex] = serieValues[serieIndex - 1] + serieValues[serieIndex - 2];
serieIndex++;
}
//fill serie values into records
for (var stepIndex = 0; stepIndex < stepsCount; stepIndex++)
{
var recordValues = new double[seriesCount];
serieIndex = 0;
for (var groupIndex = 0; groupIndex < groupCount; groupIndex++)
{
recordValues[serieIndex] = serieValues[serieIndex];
serieValues[serieIndex++] += random.NextDouble() * 10 - 5;
recordValues[serieIndex] = serieValues[serieIndex];
serieValues[serieIndex++] += random.NextDouble() * 10 - 5;
recordValues[serieIndex] = serieValues[serieIndex - 1] + serieValues[serieIndex - 2];
serieIndex++;
}
var dataRecord = new DataRecord(time, recordValues);
dataRecords[stepIndex] = dataRecord;
time = time.AddMinutes(minutes);
}
TestChart4Plots1X4YLegendsTraced.FillData <DataRecord>(dataRecords, seriesSettings);
FontDefinition[] fontDefinitions = new FontDefinition[] {
new FontDefinition(Brushes.DarkBlue, FontFamily, null, null, null, FontWeights.Bold),
new FontDefinition(Brushes.DarkRed, null, 18, null, FontStyles.Italic, FontWeights.Bold),
new FontDefinition(Brushes.DarkOrange, null, 32, FontStretches.Condensed, null, FontWeights.Normal),
};
ChartNote[] chartNotes = new ChartNote[stepsCount / 20];
time = startTime;
for (int chartNoteIndex = 0; chartNoteIndex < chartNotes.Length; chartNoteIndex++)
{
if (chartNoteIndex < 3)
{
chartNotes[chartNoteIndex] = new ChartNote(new double[] { time.ToDouble(), double.PositiveInfinity }, chartNoteIndex.ToString(), chartNoteIndex % 3);
}
else
{
chartNotes[chartNoteIndex] = new ChartNote(new double[] { time.ToDouble(), chartNoteIndex *10 }, chartNoteIndex.ToString(), chartNoteIndex % 3);
}
time = time.AddMinutes(20 * minutes);
}
TestChart4Plots1X4YLegendsTraced.AddNotes(chartNotes, fontDefinitions, 0);
}
