virtual protected void DisplayColumnsAsLinear(System.Windows.Forms.PaintEventArgs e, int columnWidth, int columnWidthNoMargin, int columnStartOffset, int verticalAxisMaxValueInPixels, int lowerLeftX, int lowerLeftY)
{
Point Base0, Base1, Base2, Base3;
IEnumerator Iterator = this.ChartDescription.Columns.GetEnumerator();
ChartColumn previousColumn = null;
Point prevBase0 = new Point(0, 0);
Point prevBase1 = new Point(0, 0);
Point prevBase2 = new Point(0, 0);
Point prevBase3 = new Point(0, 0);
int columnCurrentOffset = columnStartOffset;
int offsetFor0 = (-this.ChartDescription.VerticalAxisMinValue) * verticalAxisMaxValueInPixels / (this.ChartDescription.VerticalAxisMaxValue - this.ChartDescription.VerticalAxisMinValue);
while (Iterator.MoveNext())
{
ChartColumn currentColumn = (ChartColumn)Iterator.Current;
Debug.Assert(currentColumn.PositiveValuesSum <= this.ChartDescription.VerticalAxisMaxValue, "Chart.DisplayColumns_BarWith3d", "Vertical axis overflow, verify why current column value is higher than axis vertical value");
Debug.Assert(this.ChartDescription.VerticalAxisMaxValue > 0, "Chart.DisplayColumns_BarWith3d", "Integer divided by 0");
Base0 = new Point(columnCurrentOffset, lowerLeftY - offsetFor0);
Base1 = new Point(columnCurrentOffset + columnWidthNoMargin, lowerLeftY - offsetFor0);
Base2 = new Point(columnCurrentOffset + columnWidthNoMargin + this.ChartDescription.DeltaDepth, lowerLeftY - offsetFor0 - this.ChartDescription.DeltaDepth);
Base3 = new Point(columnCurrentOffset + this.ChartDescription.DeltaDepth, lowerLeftY - offsetFor0 - this.ChartDescription.DeltaDepth);
currentColumn.DisplayAsLinear(e, this, previousColumn, columnWidthNoMargin, verticalAxisMaxValueInPixels, Base0, Base1, Base2, Base3, prevBase0, prevBase1, prevBase2, prevBase3);
// Next
prevBase0 = Base0;
prevBase1 = Base1;
prevBase2 = Base2;
prevBase3 = Base3;
columnCurrentOffset += columnWidth;
previousColumn = currentColumn;
}
}
/// <summary>
/// Display all text on chart for all columns
/// </summary>
/// <param name="e"></param>
/// <param name="columnWidth"></param>
/// <param name="columnWidthNoMargin"></param>
/// <param name="columnStartOffset"></param>
/// <param name="verticalAxisMaxValueInPixels"></param>
/// <param name="lowerLeftX"></param>
/// <param name="lowerLeftY"></param>
virtual protected void DisplayColumnsText(System.Windows.Forms.PaintEventArgs e, int columnWidth, int columnWidthNoMargin, int columnStartOffset, int verticalAxisMaxValueInPixels, int lowerLeftX, int lowerLeftY)
{
int offset;
int offsetFor0;
IEnumerator Iterator = this.ChartDescription.Columns.GetEnumerator();
int columnCurrentOffset = columnStartOffset;
System.Diagnostics.Debug.Assert(this.ChartDescription.VerticalAxisMaxValue - this.ChartDescription.VerticalAxisMinValue != 0);
offsetFor0 = (-this.ChartDescription.VerticalAxisMinValue) * verticalAxisMaxValueInPixels / (this.ChartDescription.VerticalAxisMaxValue - this.ChartDescription.VerticalAxisMinValue);
while (Iterator.MoveNext())
{
ChartColumn currentColumn = (ChartColumn)Iterator.Current;
if (this.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFromLastValue)
{
Debug.Assert(currentColumn.PositiveValuesSum <= this.ChartDescription.VerticalAxisMaxValue, "Chart.OnPaintBackground", "Vertical axis overflow, verify why current column value is higher than axis vertical value");
}
if (this.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFrom0)
{
if (currentColumn.HighestValue >= 0)
{
offset = offsetFor0 + (verticalAxisMaxValueInPixels * currentColumn.HighestValue / (this.ChartDescription.VerticalAxisMaxValue - this.ChartDescription.VerticalAxisMinValue));
}
else
{
// In this case, align text on the '0' line offset
offset = offsetFor0;
}
}
else if (this.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFromLastValue)
{
offset = offsetFor0 + (verticalAxisMaxValueInPixels * currentColumn.PositiveValuesSum / (this.ChartDescription.VerticalAxisMaxValue - this.ChartDescription.VerticalAxisMinValue));
}
else
{
Debug.Assert(this.ChartDescription.CumulativeMode == ChartCumulativeMode.Max, "Chart.OnPaintBackground", "Cumulative mode not managed");
offset = 0;
}
int AbsoluteSum = currentColumn.PositiveValuesSum - currentColumn.NegativeValuesSum;
// Compute sie of bouding rectangle
System.Drawing.SizeF Size = e.Graphics.MeasureString(AbsoluteSum.ToString(CultureInfo.InvariantCulture), this.ChartDescription.ColumnFont);
PointF Base0 = new PointF((float)columnCurrentOffset, (float)(lowerLeftY - offset) - Size.Height);
RectangleF backgroundRectangle = new RectangleF(Base0, Size);
// Align rectangle on column width
backgroundRectangle.X = columnCurrentOffset + this.ChartDescription.MarginBetweenColumn / 2 + ((columnWidthNoMargin - backgroundRectangle.Width) / 2);
currentColumn.DisplayText(e, this, backgroundRectangle);
// Jump to next offset
columnCurrentOffset += columnWidth;
}
}
public ChartColumn(ChartColumn sourceColumn)
{
if( sourceColumn == null ) throw new NolmeWinFormsArgumentNullException ();
this.m_Values = new int [sourceColumn.m_Values.Length];
sourceColumn.m_Values.CopyTo (this.m_Values, 0);
this.m_PositiveValuesSum = sourceColumn.m_PositiveValuesSum;
this.m_NegativeValuesSum = sourceColumn.m_NegativeValuesSum;
this.m_HighestValue = sourceColumn.m_HighestValue;
this.m_LowestValue = sourceColumn.m_LowestValue;
this.m_Title = sourceColumn.m_Title;
}
public ChartColumn(ChartColumn sourceColumn)
{
if (sourceColumn == null)
{
throw new NolmeWinFormsArgumentNullException();
}
this.m_Values = new int [sourceColumn.m_Values.Length];
sourceColumn.m_Values.CopyTo(this.m_Values, 0);
this.m_PositiveValuesSum = sourceColumn.m_PositiveValuesSum;
this.m_NegativeValuesSum = sourceColumn.m_NegativeValuesSum;
this.m_HighestValue = sourceColumn.m_HighestValue;
this.m_LowestValue = sourceColumn.m_LowestValue;
this.m_Title = sourceColumn.m_Title;
}
virtual protected void DisplayColumnsTitle(System.Windows.Forms.PaintEventArgs e, int columnWidth, int columnWidthNoMargin, int columnStartOffset, int verticalAxisMaxValueInPixels, int lowerLeftX, int lowerLeftY)
{
IEnumerator Iterator = this.ChartDescription.Columns.GetEnumerator();
int columnCurrentOffset = columnStartOffset;
while (Iterator.MoveNext())
{
ChartColumn currentColumn = (ChartColumn)Iterator.Current;
Point Base0 = new Point(columnCurrentOffset, lowerLeftY);
Point Base1 = new Point(columnCurrentOffset + columnWidthNoMargin, lowerLeftY);
currentColumn.DisplayTitle(e, this, Base0, Base1);
// Jump to next offset
columnCurrentOffset += columnWidth;
}
}
/// <summary>
/// Shift all values to the left
/// </summary>
public void ShiftLeft()
{
int numberOfColumns = this.ChartDescription.Columns.Count;
if (numberOfColumns > 1)
{
for (int i = 1; i < numberOfColumns; i++)
{
this.ChartDescription.Columns[i - 1] = this.ChartDescription.Columns[i];
}
// Create new column (keep in mind that at this stage, Columns[numberOfColumns-1] & Columns[numberOfColumns-2]
// are 2 pointers on the SAME OBJECT.
ChartColumn LastColumn = new ChartColumn((ChartColumn)this.ChartDescription.Columns[numberOfColumns - 2]);
LastColumn.ResetValues();
this.ChartDescription.Columns[numberOfColumns - 1] = LastColumn;
}
}
public ChartColumn AddColumn(int [] values, string title)
{
// Create new column
ChartColumn newColumn = this.AllocateColumn(values, title);
// Resize vertical axis
if (newColumn.PositiveValuesSum > this.ChartDescription.VerticalAxisMaxValue)
{
this.ChartDescription.VerticalAxisMaxValue = newColumn.PositiveValuesSum;
}
if (newColumn.NegativeValuesSum < this.ChartDescription.VerticalAxisMinValue)
{
this.ChartDescription.VerticalAxisMinValue = newColumn.NegativeValuesSum;
}
// Add column
this.ChartDescription.Columns.Add(newColumn);
return(newColumn);
}
/// <summary>
/// Shift all values to the left
/// </summary>
public void ShiftLeft ()
{
int numberOfColumns = this.ChartDescription.Columns.Count;
if (numberOfColumns > 1)
{
for (int i = 1; i < numberOfColumns; i++)
{
this.ChartDescription.Columns[i-1] = this.ChartDescription.Columns[i];
}
// Create new column (keep in mind that at this stage, Columns[numberOfColumns-1] & Columns[numberOfColumns-2]
// are 2 pointers on the SAME OBJECT.
ChartColumn LastColumn = new ChartColumn ((ChartColumn)this.ChartDescription.Columns[numberOfColumns-2]);
LastColumn.ResetValues ();
this.ChartDescription.Columns[numberOfColumns-1] = LastColumn;
}
}
virtual protected ChartColumn AllocateColumn (int []values, string title)
{
ChartColumn newColumn = new ChartColumn (values, title);
return newColumn;
}
/// <summary>
/// Automatic detection and adjustment of vertical axis maximum
/// </summary>
public void AdjustVerticalAxis()
{
// Reset current max
this.ChartDescription.VerticalAxisMaxValue = 0;
this.ChartDescription.VerticalAxisMinValue = 0;
int savedVerticalAxisMaxValue = int.MinValue;
int savedVerticalAxisMinValue = int.MaxValue;
// Iterate to get highest value
if (this.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFromLastValue)
{
IEnumerator Iterator = this.ChartDescription.Columns.GetEnumerator();
while (Iterator.MoveNext())
{
ChartColumn currentColumn = (ChartColumn)Iterator.Current;
if (currentColumn.PositiveValuesSum > savedVerticalAxisMaxValue)
{
savedVerticalAxisMaxValue = currentColumn.PositiveValuesSum;
}
if (currentColumn.NegativeValuesSum < savedVerticalAxisMinValue)
{
savedVerticalAxisMinValue = currentColumn.NegativeValuesSum;
}
}
}
else if (this.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFrom0)
{
IEnumerator Iterator = this.ChartDescription.Columns.GetEnumerator();
while (Iterator.MoveNext())
{
ChartColumn currentColumn = (ChartColumn)Iterator.Current;
if (currentColumn.HighestValue > savedVerticalAxisMaxValue)
{
savedVerticalAxisMaxValue = currentColumn.HighestValue;
}
if (currentColumn.LowestValue < savedVerticalAxisMinValue)
{
savedVerticalAxisMinValue = currentColumn.LowestValue;
}
}
}
else
{
Debug.Assert(this.ChartDescription.CumulativeMode == ChartCumulativeMode.Max, "Chart.AdjustVerticalAxis", "Cumulative mode not managed");
}
// Compute digits for min & max and adjust to maximum digits
// Avoir missing grid text when max = 1000 & min = -20 -> scale on [-1000..+1000]
string Value1 = savedVerticalAxisMaxValue.ToString(CultureInfo.InvariantCulture);
int NbMaxDigits = Value1.Length;
string Value2 = (-savedVerticalAxisMinValue).ToString(CultureInfo.InvariantCulture);
int NbMinDigits = Value2.Length;
int NbDigitsToUse = Math.Max(NbMaxDigits, NbMinDigits);
// Round max value
if (savedVerticalAxisMaxValue != 0)
{
if (savedVerticalAxisMaxValue == 0)
{
this.ChartDescription.VerticalAxisMaxValue = 0;
}
else
{
int Round = (int)Math.Pow(10.0F, (double)(NbDigitsToUse - 1));
// N.B.: Round must be an even number in order to make the following calculation works
// As Round is a base-10 number, this condition is true.
Debug.Assert(Round % 2 == 0, "Chart.AdjustVerticalAxis ()", "Can't proceed when Round is odd");
this.ChartDescription.VerticalAxisMaxValue = ((savedVerticalAxisMaxValue + Round) / Round) * Round;
}
Debug.Assert(this.ChartDescription.VerticalAxisMaxValue >= savedVerticalAxisMaxValue, "Chart.AdjustVerticalAxis", string.Format(CultureInfo.InvariantCulture, "Overflow during resize from to {0} (max {1})", this.ChartDescription.VerticalAxisMaxValue, savedVerticalAxisMaxValue));
}
// Round min value
if (savedVerticalAxisMinValue != 0)
{
int Round = (int)Math.Pow(10.0F, (double)(NbDigitsToUse - 1));
// N.B.: Round must be an even number in order to make the following calculation works
// As Round is a base-10 number, this condition is true.
Debug.Assert(Round % 2 == 0, "Chart.AdjustVerticalAxis ()", "Can't proceed when Round is odd");
this.ChartDescription.VerticalAxisMinValue = -(((-savedVerticalAxisMinValue + Round) / Round) * Round);
Debug.Assert(this.ChartDescription.VerticalAxisMinValue <= savedVerticalAxisMinValue, "Chart.AdjustVerticalAxis", string.Format(CultureInfo.InvariantCulture, "Overflow during resize from to {0} (max {1})", this.ChartDescription.VerticalAxisMinValue, savedVerticalAxisMinValue));
}
// To avoid later integer divided by 0, make sure min != max
if (this.ChartDescription.VerticalAxisMaxValue == this.ChartDescription.VerticalAxisMinValue)
{
this.ChartDescription.VerticalAxisMaxValue = Math.Abs(this.ChartDescription.VerticalAxisMinValue) * 10000;
}
// Change VerticalAxisStep if > VerticalAxisMaxValue
if (this.ChartDescription.VerticalAxisStep > this.ChartDescription.VerticalAxisMaxValue)
{
this.ChartDescription.VerticalAxisStep = this.ChartDescription.VerticalAxisMaxValue / 10;
}
}
virtual protected ChartColumn AllocateColumn(int [] values, string title)
{
ChartColumn newColumn = new ChartColumn(values, title);
return(newColumn);
}
virtual internal void DisplayAsBarWith3d(System.Windows.Forms.PaintEventArgs pevent, Chart parent, ChartColumn previousColumn,
int columnWidthNoMargin, int verticalAxisMaxValueInPixels,
Point base0, Point base1, Point base2, Point base3,
Point prevBase0, Point prevBase1, Point prevBase2, Point prevBase3, bool gradientMode)
{
bool FirstNegativeBarToDraw = true;
// Draw all values
Point CurrentBase0 = base0;
Point CurrentBase1 = base1;
Point CurrentBase2 = base2;
Point CurrentBase3 = base3;
Point CurrentBasePositive0 = base0;
Point CurrentBasePositive1 = base1;
Point CurrentBasePositive2 = base2;
Point CurrentBasePositive3 = base3;
Point CurrentBaseNegative0 = base0;
Point CurrentBaseNegative1 = base1;
Point CurrentBaseNegative2 = base2;
Point CurrentBaseNegative3 = base3;
for (int i = 0; i < this.m_Values.Length; i++)
{
// Check if current value is the top level (all next values are 0)
// This boolean is used to known when we must draw the top of bar
bool AllNextValuesAreZero = true;
for (int j = i + 1; j < this.m_Values.Length; j++)
{
if (this.m_Values[j] != 0)
{
AllNextValuesAreZero = false;
break;
}
}
//
int offset = this.m_Values[i] * (verticalAxisMaxValueInPixels) / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue);
if (this.m_Values[i] != 0)
{
if (this.m_Values[i] >= 0)
{
CurrentBase0 = CurrentBasePositive0;
CurrentBase1 = CurrentBasePositive1;
CurrentBase2 = CurrentBasePositive2;
CurrentBase3 = CurrentBasePositive3;
}
else
{
CurrentBase0 = CurrentBaseNegative0;
CurrentBase1 = CurrentBaseNegative1;
CurrentBase2 = CurrentBaseNegative2;
CurrentBase3 = CurrentBaseNegative3;
}
Point CurrentTop0 = new Point(CurrentBase0.X, CurrentBase0.Y - offset);
Point CurrentTop1 = new Point(CurrentBase1.X, CurrentBase1.Y - offset);
Point CurrentTop2 = new Point(CurrentBase2.X, CurrentBase2.Y - offset);
Point CurrentTop3 = new Point(CurrentBase3.X, CurrentBase3.Y - offset);
Color CurrentColor = parent.ChartDescription.GetPredefinedColor(i);
//
// 3D Gradient & 3D Flat
//
if ((parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3dGradient) || (parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3d))
{
// Solid brush or gradient brush
Color CurrentColor2;
if (parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3dGradient)
{
CurrentColor2 = Color.FromArgb(CurrentColor.A, CurrentColor.R / 2, CurrentColor.G / 2, CurrentColor.B / 2);
}
else
{
CurrentColor2 = CurrentColor;
}
// Compute boundaries to fill
GraphicsPath pathSubValues = new GraphicsPath();
LinearGradientBrush CurrentBrush;
if (this.m_Values[i] >= 0)
{
Point TopLeft = new Point(CurrentBase2.X, CurrentBase1.Y);
Point BottomRight = new Point(CurrentTop0.X, CurrentTop3.Y);
CurrentBrush = new LinearGradientBrush(TopLeft, BottomRight, CurrentColor, CurrentColor2);
pathSubValues.AddLine(CurrentBase0, CurrentBase1);
pathSubValues.AddLine(CurrentBase1, CurrentBase2);
pathSubValues.AddLine(CurrentBase2, CurrentTop2);
if (AllNextValuesAreZero)
{
// Add the 'Top' part'
pathSubValues.AddLine(CurrentTop2, CurrentTop3);
pathSubValues.AddLine(CurrentTop3, CurrentTop0);
pathSubValues.AddLine(CurrentTop0, CurrentBase0);
}
else
{
// Skip the 'Top' part
pathSubValues.AddLine(CurrentTop2, CurrentTop1);
pathSubValues.AddLine(CurrentTop1, CurrentTop0);
pathSubValues.AddLine(CurrentTop0, CurrentBase0);
}
}
else
{
Point TopLeft = new Point(CurrentBase0.X, CurrentBase3.Y);
Point BottomRight = new Point(CurrentTop2.X, CurrentTop1.Y);
CurrentBrush = new LinearGradientBrush(TopLeft, BottomRight, CurrentColor, CurrentColor2);
pathSubValues.AddLine(CurrentTop0, CurrentTop1);
pathSubValues.AddLine(CurrentTop1, CurrentTop2);
pathSubValues.AddLine(CurrentTop2, CurrentBase2);
if ((FirstNegativeBarToDraw) && (this.PositiveValuesSum == 0))
{
// Add the 'Top' part'
pathSubValues.AddLine(CurrentBase2, CurrentBase3);
pathSubValues.AddLine(CurrentBase3, CurrentBase0);
pathSubValues.AddLine(CurrentBase0, CurrentTop0);
FirstNegativeBarToDraw = false;
}
else
{
// Skip the 'Top' part
pathSubValues.AddLine(CurrentBase2, CurrentBase1);
pathSubValues.AddLine(CurrentBase1, CurrentBase0);
pathSubValues.AddLine(CurrentBase0, CurrentTop0);
}
}
// Fill path
pevent.Graphics.FillPath(CurrentBrush, pathSubValues);
// Draw borders on path
this.DisplayBorders(pevent, parent, this.m_Values[i], CurrentBase0, CurrentBase1, CurrentBase2, CurrentBase3, CurrentTop0, CurrentTop1, CurrentTop2, CurrentTop3);
}
else
{
Debug.Assert(parent.ChartDescription.RenderingMode == ChartRenderingMode.Linear3d, "ChartColumn.DisplayBars", "Rendering mode not yet managed");
}
// Next
if (parent.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFromLastValue)
{
if (this.m_Values[i] >= 0)
{
CurrentBasePositive0 = CurrentTop0;
CurrentBasePositive1 = CurrentTop1;
CurrentBasePositive2 = CurrentTop2;
CurrentBasePositive3 = CurrentTop3;
}
else
{
CurrentBaseNegative0 = CurrentTop0;
CurrentBaseNegative1 = CurrentTop1;
CurrentBaseNegative2 = CurrentTop2;
CurrentBaseNegative3 = CurrentTop3;
}
}
}
}
// Redraw top to override hidden pen color
GraphicsPath pathTop = new GraphicsPath();
pathTop.AddLine(CurrentBasePositive0, CurrentBasePositive1);
pathTop.AddLine(CurrentBasePositive1, CurrentBasePositive2);
pathTop.AddLine(CurrentBasePositive2, CurrentBasePositive3);
pathTop.AddLine(CurrentBasePositive3, CurrentBasePositive0);
pevent.Graphics.DrawPath(parent.ChartDescription.ColumnPen, pathTop);
}
virtual internal void DisplayAsLinear(System.Windows.Forms.PaintEventArgs pevent, Chart parent, ChartColumn previousColumn,
int columnWidthNoMargin, int verticalAxisMaxValueInPixels,
Point base0, Point base1, Point base2, Point base3,
Point prevBase0, Point prevBase1, Point prevBase2, Point prevBase3)
{
Debug.Assert(parent.ChartDescription.RenderingMode == ChartRenderingMode.Linear3d, "ChartColumn.DisplayBars", "Rendering mode not yet managed");
// First column, nothing to draw
if (previousColumn == null)
{
return;
}
// Draw all values
for (int i = 0; i < this.m_Values.Length; i++)
{
Color currentColor = parent.ChartDescription.GetPredefinedColor(i);
Brush CurrentBrush = new SolidBrush(currentColor);
Brush CurrentBrushDarken = new SolidBrush(Color.FromArgb(currentColor.A, currentColor.R / 2, currentColor.G / 2, currentColor.B / 2));
// Compute points
int prevY = prevBase0.Y - (previousColumn.m_Values[i] * verticalAxisMaxValueInPixels / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue));
int y = base0.Y - (this.m_Values[i] * verticalAxisMaxValueInPixels / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue));
Point currentPoint0 = new Point(prevBase0.X + columnWidthNoMargin / 2, prevY);
Point currentPoint1 = new Point(base0.X + columnWidthNoMargin / 2, y);
Point currentPoint2 = new Point(base3.X + columnWidthNoMargin / 2, y - parent.ChartDescription.DeltaDepth);
Point currentPoint3 = new Point(prevBase3.X + columnWidthNoMargin / 2, prevY - parent.ChartDescription.DeltaDepth);
// Local top value path
GraphicsPath pathSubValues = new GraphicsPath();
pathSubValues.AddLine(currentPoint0, currentPoint1);
pathSubValues.AddLine(currentPoint1, currentPoint2);
pathSubValues.AddLine(currentPoint2, currentPoint3);
pathSubValues.AddLine(currentPoint3, currentPoint0);
if (prevY > y)
{
pevent.Graphics.FillPath(CurrentBrushDarken, pathSubValues);
}
else
{
pevent.Graphics.FillPath(CurrentBrush, pathSubValues);
}
}
}
virtual internal void DisplayAsBarWith3d (System.Windows.Forms.PaintEventArgs pevent, Chart parent, ChartColumn previousColumn,
int columnWidthNoMargin, int verticalAxisMaxValueInPixels,
Point base0, Point base1, Point base2, Point base3,
Point prevBase0, Point prevBase1, Point prevBase2, Point prevBase3, bool gradientMode)
{
bool FirstNegativeBarToDraw = true;
// Draw all values
Point CurrentBase0 = base0;
Point CurrentBase1 = base1;
Point CurrentBase2 = base2;
Point CurrentBase3 = base3;
Point CurrentBasePositive0 = base0;
Point CurrentBasePositive1 = base1;
Point CurrentBasePositive2 = base2;
Point CurrentBasePositive3 = base3;
Point CurrentBaseNegative0 = base0;
Point CurrentBaseNegative1 = base1;
Point CurrentBaseNegative2 = base2;
Point CurrentBaseNegative3 = base3;
for (int i = 0; i < this.m_Values.Length; i++)
{
// Check if current value is the top level (all next values are 0)
// This boolean is used to known when we must draw the top of bar
bool AllNextValuesAreZero = true;
for (int j = i+1; j < this.m_Values.Length; j++)
{
if (this.m_Values[j] != 0)
{
AllNextValuesAreZero = false;
break;
}
}
//
int offset = this.m_Values[i] * (verticalAxisMaxValueInPixels) / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue);
if (this.m_Values[i] != 0)
{
if (this.m_Values[i] >= 0)
{
CurrentBase0 = CurrentBasePositive0;
CurrentBase1 = CurrentBasePositive1;
CurrentBase2 = CurrentBasePositive2;
CurrentBase3 = CurrentBasePositive3;
}
else
{
CurrentBase0 = CurrentBaseNegative0;
CurrentBase1 = CurrentBaseNegative1;
CurrentBase2 = CurrentBaseNegative2;
CurrentBase3 = CurrentBaseNegative3;
}
Point CurrentTop0 = new Point (CurrentBase0.X, CurrentBase0.Y - offset);
Point CurrentTop1 = new Point (CurrentBase1.X, CurrentBase1.Y - offset);
Point CurrentTop2 = new Point (CurrentBase2.X, CurrentBase2.Y - offset);
Point CurrentTop3 = new Point (CurrentBase3.X, CurrentBase3.Y - offset);
Color CurrentColor = parent.ChartDescription.GetPredefinedColor (i);
//
// 3D Gradient & 3D Flat
//
if ((parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3dGradient) ||(parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3d))
{
// Solid brush or gradient brush
Color CurrentColor2;
if (parent.ChartDescription.RenderingMode == ChartRenderingMode.BarWith3dGradient)
CurrentColor2 = Color.FromArgb (CurrentColor.A, CurrentColor.R /2, CurrentColor.G /2, CurrentColor.B /2);
else
CurrentColor2 = CurrentColor;
// Compute boundaries to fill
GraphicsPath pathSubValues = new GraphicsPath ();
LinearGradientBrush CurrentBrush;
if (this.m_Values[i] >= 0)
{
Point TopLeft = new Point (CurrentBase2.X, CurrentBase1.Y);
Point BottomRight = new Point (CurrentTop0.X, CurrentTop3.Y);
CurrentBrush = new LinearGradientBrush (TopLeft, BottomRight, CurrentColor, CurrentColor2);
pathSubValues.AddLine (CurrentBase0, CurrentBase1);
pathSubValues.AddLine (CurrentBase1, CurrentBase2);
pathSubValues.AddLine (CurrentBase2, CurrentTop2);
if (AllNextValuesAreZero)
{
// Add the 'Top' part'
pathSubValues.AddLine (CurrentTop2, CurrentTop3);
pathSubValues.AddLine (CurrentTop3, CurrentTop0);
pathSubValues.AddLine (CurrentTop0, CurrentBase0);
}
else
{
// Skip the 'Top' part
pathSubValues.AddLine (CurrentTop2, CurrentTop1);
pathSubValues.AddLine (CurrentTop1, CurrentTop0);
pathSubValues.AddLine (CurrentTop0, CurrentBase0);
}
}
else
{
Point TopLeft = new Point (CurrentBase0.X, CurrentBase3.Y);
Point BottomRight = new Point (CurrentTop2.X, CurrentTop1.Y);
CurrentBrush = new LinearGradientBrush (TopLeft, BottomRight, CurrentColor, CurrentColor2);
pathSubValues.AddLine (CurrentTop0, CurrentTop1);
pathSubValues.AddLine (CurrentTop1, CurrentTop2);
pathSubValues.AddLine (CurrentTop2, CurrentBase2);
if (( FirstNegativeBarToDraw) && (this.PositiveValuesSum == 0))
{
// Add the 'Top' part'
pathSubValues.AddLine (CurrentBase2, CurrentBase3);
pathSubValues.AddLine (CurrentBase3, CurrentBase0);
pathSubValues.AddLine (CurrentBase0, CurrentTop0);
FirstNegativeBarToDraw = false;
}
else
{
// Skip the 'Top' part
pathSubValues.AddLine (CurrentBase2, CurrentBase1);
pathSubValues.AddLine (CurrentBase1, CurrentBase0);
pathSubValues.AddLine (CurrentBase0, CurrentTop0);
}
}
// Fill path
pevent.Graphics.FillPath (CurrentBrush, pathSubValues);
// Draw borders on path
this.DisplayBorders (pevent, parent, this.m_Values[i], CurrentBase0, CurrentBase1, CurrentBase2, CurrentBase3, CurrentTop0, CurrentTop1, CurrentTop2, CurrentTop3);
}
else
{
Debug.Assert (parent.ChartDescription.RenderingMode == ChartRenderingMode.Linear3d, "ChartColumn.DisplayBars", "Rendering mode not yet managed");
}
// Next
if (parent.ChartDescription.CumulativeMode == ChartCumulativeMode.StartFromLastValue)
{
if (this.m_Values[i] >= 0)
{
CurrentBasePositive0 = CurrentTop0;
CurrentBasePositive1 = CurrentTop1;
CurrentBasePositive2 = CurrentTop2;
CurrentBasePositive3 = CurrentTop3;
}
else
{
CurrentBaseNegative0 = CurrentTop0;
CurrentBaseNegative1 = CurrentTop1;
CurrentBaseNegative2 = CurrentTop2;
CurrentBaseNegative3 = CurrentTop3;
}
}
}
}
// Redraw top to override hidden pen color
GraphicsPath pathTop = new GraphicsPath ();
pathTop.AddLine (CurrentBasePositive0, CurrentBasePositive1);
pathTop.AddLine (CurrentBasePositive1, CurrentBasePositive2);
pathTop.AddLine (CurrentBasePositive2, CurrentBasePositive3);
pathTop.AddLine (CurrentBasePositive3, CurrentBasePositive0);
pevent.Graphics.DrawPath (parent.ChartDescription.ColumnPen, pathTop);
}
virtual internal void DisplayAsLinear (System.Windows.Forms.PaintEventArgs pevent, Chart parent, ChartColumn previousColumn,
int columnWidthNoMargin, int verticalAxisMaxValueInPixels,
Point base0, Point base1, Point base2, Point base3,
Point prevBase0, Point prevBase1, Point prevBase2, Point prevBase3)
{
Debug.Assert (parent.ChartDescription.RenderingMode == ChartRenderingMode.Linear3d, "ChartColumn.DisplayBars", "Rendering mode not yet managed");
// First column, nothing to draw
if (previousColumn == null)
return;
// Draw all values
for (int i = 0; i < this.m_Values.Length; i++)
{
Color currentColor = parent.ChartDescription.GetPredefinedColor (i);
Brush CurrentBrush = new SolidBrush (currentColor);
Brush CurrentBrushDarken = new SolidBrush (Color.FromArgb (currentColor.A, currentColor.R /2, currentColor.G /2, currentColor.B /2));
// Compute points
int prevY = prevBase0.Y - (previousColumn.m_Values[i] * verticalAxisMaxValueInPixels / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue));
int y = base0.Y - (this.m_Values[i] * verticalAxisMaxValueInPixels / (parent.ChartDescription.VerticalAxisMaxValue - parent.ChartDescription.VerticalAxisMinValue));
Point currentPoint0 = new Point (prevBase0.X + columnWidthNoMargin / 2, prevY);
Point currentPoint1 = new Point (base0.X + columnWidthNoMargin / 2, y);
Point currentPoint2 = new Point (base3.X + columnWidthNoMargin / 2, y - parent.ChartDescription.DeltaDepth);
Point currentPoint3 = new Point (prevBase3.X + columnWidthNoMargin / 2, prevY - parent.ChartDescription.DeltaDepth);
// Local top value path
GraphicsPath pathSubValues = new GraphicsPath ();
pathSubValues.AddLine (currentPoint0, currentPoint1);
pathSubValues.AddLine (currentPoint1, currentPoint2);
pathSubValues.AddLine (currentPoint2, currentPoint3);
pathSubValues.AddLine (currentPoint3, currentPoint0);
if (prevY > y)
pevent.Graphics.FillPath (CurrentBrushDarken, pathSubValues);
else
pevent.Graphics.FillPath (CurrentBrush, pathSubValues);
}
}
