private void AddTargetLine()
{
if (DataList.TargetLine.Equals(0))
{
return;
}
else
{
var TargetLine = new ChartLine()
{
Name = "XAxis",
X1Position = 0,
X2Position = LengthForXAxis - 100,
Y1Position = 0, //ChartHeight - 150,
Y2Position = 0, // ChartHeight - 150,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = 100
};
if (ForceYStartAtZero)
{
TargetLine.YPosition = (ChartHeight - 150) - DataList.TargetLine * BarHeightModifier - 2;
}
else
{
TargetLine.YPosition = (ChartHeight - 150) - (DataList.TargetLine - LowestTickMarkValue) * BarHeightModifier - 2;
}
ChartNodesCollection.Add(TargetLine);
}
}
private void AddAxis()
{
var Xaxis = new ChartLine()
{
Name = "XAxis",
X1Position = 0,
X2Position = LengthForXAxis - 100,
Y1Position = 0, //ChartHeight - 150,
Y2Position = 0, // ChartHeight - 150,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = 100,
YPosition = ChartHeight - 150,
};
ChartNodesCollection.Add(Xaxis);
var YAxis = new ChartLine()
{
Name = "YAxis",
X1Position = 0,
X2Position = 0,
Y1Position = ChartHeight - 250,
Y2Position = 0,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = 100,
YPosition = 100,
};
ChartNodesCollection.Add(YAxis);
}
public void CalculateChart()
{
ChartNodesCollection.Clear(); //empty collection to make room for the newly created collection, can later be updated to only remove updating parts with the names
CalculateMinMaxDataValue();
GenerateTickmarks();
GenerateBarsInChart();
AddAxis();
}
private void GenerateTickmarks()
{
ChartHeightDifference = MaxDataValue - MinDataValue;
double MostFittingTickMark = ChartHeightDifference / YTickmarkCount;
double BestAvailableTickMark = TickMarkIntervals.Where(s => s > MostFittingTickMark).First();
LowestTickMarkValue = Math.Floor(MinDataValue / BestAvailableTickMark) * BestAvailableTickMark - BestAvailableTickMark;
if (LowestTickMarkValue < 0)
{
LowestTickMarkValue = 0;
}
HigestTickMarkValue = Math.Ceiling(MaxDataValue / BestAvailableTickMark) * BestAvailableTickMark;
double TickMarksToGenerate = (HigestTickMarkValue - LowestTickMarkValue) / BestAvailableTickMark;
// test if this gives us a good amount of tickmarks or if there are way too many (could occur sometimes!)
if (ChartHeightDifference / BestAvailableTickMark > YTickmarkCount * 1.4)
{
BestAvailableTickMark = TickMarkIntervals.Where(s => s > BestAvailableTickMark).First();
}
int TickMarksGenerated = 0; // needed to count them somehow :S
for (double TickMarkNumber = LowestTickMarkValue; TickMarkNumber <= HigestTickMarkValue; TickMarkNumber = TickMarkNumber + BestAvailableTickMark)
{
var TickMarkBox = new ChartText();
TickMarkBox.Name = "YTickmark";
TickMarkBox.Text = string.Format("{0}", TickMarkNumber);
TickMarkBox.Width = 95;
TickMarkBox.FlowDirection = FlowDirection.RightToLeft;
TickMarkBox.XPosition = 0;
TickMarkBox.YPosition = ChartHeight - 158 - ((TickMarksGenerated / TickMarksToGenerate) * (ChartHeight - 250));
ChartNodesCollection.Add(TickMarkBox);
/*
* Canvas.SetLeft(TickMarkBox, 0); //provide enough space on the left size of the axis
* TickMarkBox.FlowDirection = FlowDirection.RightToLeft;
* Canvas.SetTop(TickMarkBox, ChartHeight - 158 - ((TickMarksGenerated / TickMarksToGenerate) * (ChartHeight-250))); // 158 = 8 so the tickmark is in the middle of what it represents, 150 extra space on the bottom --- 250 is to limit the range used (100 at the top + 150 at the bottom)
* ShapeCollection.Add(TickMarkBox);
*/
TickMarksGenerated++;
}
}
private void AddAxis()
{
// need to calculate how "high" the X-axis will be in our chart
double YPositionForXaxis;
if ((LowestTickMarkValue == 0))
{
YPositionForXaxis = ChartHeight - ChartSpaceOffsetBottom;
}
else
{
YPositionForXaxis = ChartHeight - ChartSpaceOffsetBottom - (BarHeightModifier * (0 - LowestTickMarkValue));
}
var Xaxis = new ChartLine()
{
Name = "XAxis",
X1Position = 0,
X2Position = LengthForXAxis - ChartSpaceOffsetLeft,
Y1Position = 0,
Y2Position = 0,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = ChartSpaceOffsetLeft,
YPosition = YPositionForXaxis, //had to calculate this first (bit above :))
};
ChartNodesCollection.Add(Xaxis);
var YAxis = new ChartLine()
{
Name = "YAxis",
X1Position = 0,
X2Position = 0,
Y1Position = ChartAvailableSpaceY,
Y2Position = 0,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = ChartSpaceOffsetLeft,
YPosition = ChartSpaceOffsetTop,
};
ChartNodesCollection.Add(YAxis);
}
private void GenerateTickmarks()
{
ChartHeightDifference = MaxDataValue - MinDataValue;
double MostFittingTickMark = ChartHeightDifference / YTickmarkCount;
double BestAvailableTickMark = TickMarkIntervals.Where(s => s > MostFittingTickMark).First();
LowestTickMarkValue = Math.Floor(MinDataValue / BestAvailableTickMark) * BestAvailableTickMark - BestAvailableTickMark;
//if (LowestTickMarkValue < 0) { LowestTickMarkValue = 0; }
HigestTickMarkValue = Math.Ceiling(MaxDataValue / BestAvailableTickMark) * BestAvailableTickMark;
double TickMarksToGenerate = (HigestTickMarkValue - LowestTickMarkValue) / BestAvailableTickMark;
int TickMarksGenerated = 0; // needed to count them somehow :S
for (double TickMarkNumber = LowestTickMarkValue; TickMarkNumber <= HigestTickMarkValue; TickMarkNumber += BestAvailableTickMark)
{
var TickMarkBox = new ChartText();
TickMarkBox.Name = "YTickmark";
TickMarkBox.Text = string.Format("{0:n0}", TickMarkNumber);
TickMarkBox.Width = 95; // should fit enough numbers like this :)
TickMarkBox.FlowDirection = FlowDirection.RightToLeft;
TickMarkBox.XPosition = ChartSpaceOffsetLeft - 100; // since the textbox itself is 95 long, and we want a bit of space between the Y-axis and the box itself :)
TickMarkBox.YPosition = ChartHeight - ChartSpaceOffsetBottom - 8 - ((TickMarksGenerated / TickMarksToGenerate) * (ChartAvailableSpaceY)); //positions the numbers on the y-axis at the appropiate height
ChartNodesCollection.Add(TickMarkBox);
TickMarksGenerated++;
}
// set the position of the Yaxis 0-value for use later in the proces
//can of course only be set if the 0-value is in range of the chart
if (!(HigestTickMarkValue < 0 || LowestTickMarkValue > 0))
{
YAxisZeroValueOffset = ChartAvailableSpaceY / (HigestTickMarkValue - LowestTickMarkValue) * (0 - LowestTickMarkValue);
}
}
/// <summary>
/// add the targetline to the graph if it falls within the chartrange, otherwise does nothing
/// </summary>
private void AddTargetLine()
{
if (DataList.TargetLine.Equals(0))
{
return;
}
else if (DataList.TargetLine > LowestTickMarkValue && DataList.TargetLine < HigestTickMarkValue)
{
var TargetLine = new ChartLine()
{
Name = "TargetLine",
X1Position = 0,
X2Position = LengthForXAxis - ChartSpaceOffsetLeft,
Y1Position = 0,
Y2Position = 0,
Stroke = Brushes.Black,
Thickness = 2,
XPosition = ChartSpaceOffsetLeft
};
if (ForceYStartAtZero)
{
TargetLine.YPosition = (ChartHeight - ChartSpaceOffsetBottom) - DataList.TargetLine * BarHeightModifier;
}
else
{
TargetLine.YPosition = (ChartHeight - ChartSpaceOffsetBottom) - (DataList.TargetLine - LowestTickMarkValue) * BarHeightModifier;
}
ChartNodesCollection.Add(TargetLine);
}
else
{
return;
}
}
private void GenerateBarsInChart()
{
LengthForXAxis = 1; //reset variable to 1 if it is not 1 (which is the standard offset from the Y-Axis to not overlap, if the chart was already calculated before, this will not contain zero so this is necassary)
double SpaceAvailablePerBar = ((double)ChartWidth - ChartSpaceOffsetLeft - ChartSpaceOffsetRight) / (double)DataList.DataPoints.Count; // the 2 here should be "assignable"
BarHeightModifier = (ChartAvailableSpaceY) / (HigestTickMarkValue - LowestTickMarkValue);
// space available per bar gives us the amount of pixels we are allowed to spend, then we add in emtpy spaces with BarGapModifier
// if anything other than a number between 0 and 1, don't show any gaps between bars
if (AddWhiteSpacePerBar < 0 || AddWhiteSpacePerBar > 1)
{
AddWhiteSpacePerBar = 0;
}
double BarWidthWhitespace = SpaceAvailablePerBar * AddWhiteSpacePerBar; //calculate whitespace per bar
BarWidth = SpaceAvailablePerBar - BarWidthWhitespace; //leftover amounts go to the bar itself
for (int LoopCounter = 0; LoopCounter < DataList.DataPoints.Count; LoopCounter++)//using loopcounter since we need to know on which bar we are for positioning
{
//from this part its going to be interesting.. we need to accomodate for a waterfall, not individual values...
var CurrentBar = new ChartBar();
CurrentBar.Name = "BarInChart"; //Identifier for collection
if (!DataList.TargetLine.Equals(null))
{
if (DataList.DataPoints[LoopCounter].Value < DataList.TargetLine)
{
CurrentBar.Fill = DataList.WorseThanTargetColor;
}
else
{
CurrentBar.Fill = DataList.BetterThanTargetColor;
}
}
else
{
CurrentBar.Fill = DataList.Color;
}
CurrentBar.Width = BarWidth; //set the bar width to represent the data
// calculate the 0 y-axis value of the chart in pixels
// so now we need to, at least, also have the value where we ended up from the previous bar, otherwise this will not make much sense
// Still I want to keep the data input the same, so we need to modify this code "a bit"
if (LowestTickMarkValue == 0) //
{
CurrentBar.Height = BarHeightModifier * DataList.DataPoints[LoopCounter].Value;
CurrentBar.YPosition = (ChartHeight - ChartSpaceOffsetBottom) - DataList.DataPoints[LoopCounter].Value * BarHeightModifier;
}
else if (MinDataValue >= 0) // normal chart starting from above 0
{
CurrentBar.Height = BarHeightModifier * (DataList.DataPoints[LoopCounter].Value - LowestTickMarkValue);
CurrentBar.YPosition = (ChartHeight - ChartSpaceOffsetBottom) - (DataList.DataPoints[LoopCounter].Value - LowestTickMarkValue) * BarHeightModifier;
}
else //chart that has y=0 somewhere in the middle
{
if (DataList.DataPoints[LoopCounter].Value > 0)
{
CurrentBar.Height = BarHeightModifier * (DataList.DataPoints[LoopCounter].Value);
CurrentBar.YPosition = -YAxisZeroValueOffset + (ChartHeight - ChartSpaceOffsetBottom) - (DataList.DataPoints[LoopCounter].Value) * BarHeightModifier;
}
else
{
CurrentBar.Height = BarHeightModifier * (-DataList.DataPoints[LoopCounter].Value);
CurrentBar.YPosition = -YAxisZeroValueOffset + (ChartHeight - ChartSpaceOffsetBottom);
}
}
//now we need to position the bar correctly on the graph, how many pixels to the right?
// 3 is the standard offset to not hit the Y-Axis
// BarWidth is the width of the bar itself, barWidthWhitespace is the gaps between the bars
// the last bit ensures the first bar also has half a whitespace in front of it
// add a bit of whitespace before the first bar, makes it look better in the chart
if (LoopCounter == 0)
{
LengthForXAxis += BarWidthWhitespace / 2 + ChartSpaceOffsetLeft;
}
CurrentBar.XPosition = LengthForXAxis;
//Canvas.SetLeft(CurrentBar, LengthForXAxis);
ChartNodesCollection.Add(CurrentBar);
//ShapeCollection.Children.Add(CurrentBar);
// if the datapoint has a name, it should display below the bar
if (!string.IsNullOrWhiteSpace(DataList.DataPoints[LoopCounter].Name))
{
var BarName = new ChartText();
BarName.Name = "BarInChartNameBox";
BarName.Text = DataList.DataPoints[LoopCounter].Name;
BarName.YPosition = ChartHeight - ChartSpaceOffsetBottom;
BarName.XPosition = LengthForXAxis + SpaceAvailablePerBar / 2;
BarName.Width = 200;
//Canvas.SetTop(BarName, ChartHeight-150);
//Canvas.SetLeft(BarName, LengthForXAxis+SpaceAvailablePerBar/2);
BarName.RenderTransform = new RotateTransform(30);
ChartNodesCollection.Add(BarName);
//ShapeCollection.Children.Add(BarName);
}
LengthForXAxis += (BarWidth) + (BarWidthWhitespace); //prepare for adding the next bar in the chart :)
}
}
private void GenerateBarsInChart()
{
LengthForXAxis = 1; //reset variable to zero if it is not 1 (which is the standard offset from the Y-Axis to not overlap)
double SpaceAvailablePerBar = ((double)ChartWidth - 200) / (double)DataList.DataPoints.Count; // the 2 here should be "assignable"
BarHeightModifier = (ChartHeight - 250) / (HigestTickMarkValue - LowestTickMarkValue);
// space available per bar gives us the amount of pixels we are allowed to spend, then we add in emtpy spaces with BarGapModifier
// if anything other than a number between 0 and 1, don't show any gaps between bars
if (AddWhiteSpacePerBar < 0 || AddWhiteSpacePerBar > 1)
{
AddWhiteSpacePerBar = 0;
}
double BarWidthWhitespace = SpaceAvailablePerBar * AddWhiteSpacePerBar; //calculate whitespace per bar
BarWidth = SpaceAvailablePerBar - BarWidthWhitespace; //leftover amounts go to the bar itself
for (int LoopCounter = 0; LoopCounter < DataList.DataPoints.Count; LoopCounter++)//using loopcounter since we need to know on which bar we are for positioning
{
var CurrentBar = new ChartBar();
CurrentBar.Name = "BarInChart"; //Identifier for canvas collection
if (!DataList.TargetLine.Equals(null))
{
if (DataList.DataPoints[LoopCounter].Value < DataList.TargetLine)
{
CurrentBar.Fill = DataList.WorseThanTargetColor;
}
else
{
CurrentBar.Fill = DataList.BetterThanTargetColor;
}
}
else
{
CurrentBar.Fill = DataList.Color;
}
CurrentBar.Width = BarWidth; //set the bar width to represent the data
if (ForceYStartAtZero)
{
CurrentBar.Height = BarHeightModifier * DataList.DataPoints[LoopCounter].Value;
CurrentBar.YPosition = (ChartHeight - 150) - DataList.DataPoints[LoopCounter].Value * BarHeightModifier - 2;
//Canvas.SetTop(CurrentBar, (ChartHeight-150) - DataList.DataPoints[LoopCounter].Value * BarHeightModifier - 2);
}
else
{
CurrentBar.Height = BarHeightModifier * (DataList.DataPoints[LoopCounter].Value - LowestTickMarkValue);
CurrentBar.YPosition = (ChartHeight - 150) - (DataList.DataPoints[LoopCounter].Value - LowestTickMarkValue) * BarHeightModifier - 2;
//Canvas.SetTop(CurrentBar, (ChartHeight-150) - (DataList.DataPoints[LoopCounter].Value - LowestTickMarkValue) * BarHeightModifier - 2);
}
//now we need to position the bar correctly on the graph, how many pixels to the right?
// 3 is the standard offset to not hit the Y-Axis
// BarWidth is the width of the bar itself, barWidthWhitespace is the gaps between the bars
// the last bit ensures the first bar also has half a whitespace in front of it
// add a bit of whitespace before the first bar, makes it look better in the chart
if (LoopCounter == 0)
{
LengthForXAxis += BarWidthWhitespace / 2 + 100;
}
CurrentBar.XPosition = LengthForXAxis;
//Canvas.SetLeft(CurrentBar, LengthForXAxis);
ChartNodesCollection.Add(CurrentBar);
//ShapeCollection.Children.Add(CurrentBar);
// if the datapoint has a name, it should display below the bar
if (!string.IsNullOrWhiteSpace(DataList.DataPoints[LoopCounter].Name))
{
var BarName = new ChartText();
BarName.Name = "BarInChartNameBox";
BarName.Text = DataList.DataPoints[LoopCounter].Name;
BarName.YPosition = ChartHeight - 150;
BarName.XPosition = LengthForXAxis + SpaceAvailablePerBar / 2;
BarName.Width = 200;
//Canvas.SetTop(BarName, ChartHeight-150);
//Canvas.SetLeft(BarName, LengthForXAxis+SpaceAvailablePerBar/2);
BarName.RenderTransform = new RotateTransform(30);
ChartNodesCollection.Add(BarName);
//ShapeCollection.Children.Add(BarName);
}
LengthForXAxis += (BarWidth) + (BarWidthWhitespace); //prepare for adding the next bar in the chart :)
}
}
