public Bar()
{
//Initalize variables
nWidthBar = 10;
nWidthBorderOfBarLine = 2;
nGapBarOfColumn = 4;
nGapColumns = 8;
colBorderOfBar = SystemColors.WindowText;
bMouseEnterBar = false;
barLocation = new List <ItemDrawInfo>(); //For not throw exception,If mouse move event fire
itemLastBarEnter = new ItemDrawInfo();
SecondDataMemberIndependentZero = false;
}
private void Chart_MouseMove(object sender, MouseEventArgs e)
{
if (rcChartDrawArea.Contains(e.Location))
{
//Bar enter exit
if (bMouseEnterBar)
{
if (!itemLastBarEnter.Rect.Contains(e.Location))
{
bMouseEnterBar = false;
OnMouseLeaveBar(itemLastBarEnter.ColIndex, itemLastBarEnter.RowIndex);
itemLastBarEnter.ColIndex = itemLastBarEnter.RowIndex = -1;
}
}
if (!bMouseEnterBar)
{
foreach (ItemDrawInfo item in barLocation)
{
if (item.Rect.Contains(e.Location))
{
bMouseEnterBar = true;
itemLastBarEnter = item;
OnMouseEnterBar(itemLastBarEnter.ColIndex, itemLastBarEnter.RowIndex);
break;
}
}
}
}
else
{
if (bMouseEnterBar)
{
bMouseEnterBar = false;
OnMouseLeaveBar(itemLastBarEnter.ColIndex, itemLastBarEnter.RowIndex);
}
}
}
public void NearestBar(Point point, out int rowIndex, out int colIndex)
{
rowIndex = colIndex = -1;
if (barLocation.Count != 0)
{
ItemDrawInfo l = barLocation[0];
ItemDrawInfo g = barLocation[barLocation.Count - 1];
int xl = l.Rect.Left + l.Rect.Width / 2;
int xg = g.Rect.Left + g.Rect.Width / 2;
bool bR2L = Parent.Chart.IsRTL();
if (bR2L)
{
ItemDrawInfo e = l;
l = g;
g = e;
int xe = xl;
xl = xg;
xg = xe;
}
foreach (ItemDrawInfo idi in barLocation)
{
int x = idi.Rect.Left + idi.Rect.Width / 2;
if (x > xl && x <= point.X)
{
l = idi;
xl = x;
}
if (x < xg && x >= point.X)
{
g = idi;
xg = x;
}
}
if (xl == xg)
{
rowIndex = l.RowIndex;
colIndex = l.ColIndex;
}
else
{
int x1 = Math.Abs(xl - point.X);
int x2 = Math.Abs(xg - point.X);
if (x1 > x2)
{
rowIndex = g.RowIndex;
colIndex = g.ColIndex;
}
else
{
rowIndex = l.RowIndex;
colIndex = l.ColIndex;
}
}
}
}
protected override void InternalPaintChart(Graphics grChart,
IBindingData data, Rectangle rcArea,
ref double xAxisBetweenTextSpace, ref double xAxisTextWidth
)
{
bool bR2L = Parent.Chart.IsRTL();
Pen penLine = new Pen(colBorderOfBar, nWidthBorderOfBarLine);
//Draw bars
if ((int)rcChartDrawArea.Height > 0 && (int)rcChartDrawArea.Width > 0)
{
int xDraw = nGapColumns;
double maxminHeight = (double)(rcChartDrawArea.Height / (MaxInTopOfChartArea - MinInBottomOfChartArea));
double xScale = 1;
if (SizingModeLabel == SizingModeLabel.Fit ||
SizingModeLabel == SizingModeLabel.FitIfLarge)
{
int x = xDraw;
x += data.ColumnCount * data.RowCount * nWidthBar;
x += nGapBarOfColumn * (data.RowCount - 1) * data.ColumnCount;
x += nGapColumns * (data.ColumnCount - 1);
x += nGapBarOfColumn; //For space end Axis and last bar
xScale = rcChartDrawArea.Width / (double)x;
}
if (SizingModeLabel == SizingModeLabel.FitIfLarge && xScale > 1)
{
xScale = 1;
}
xAxisBetweenTextSpace = nGapColumns * xScale;
xAxisTextWidth = data.RowCount * nWidthBar +
(data.RowCount - 1) * nGapBarOfColumn;
xAxisTextWidth *= xScale;
Color[] colBarInner = Parent.Chart.Colors;
Brush[] brBar = new Brush[colBarInner.Length];
for (int i = 0; i < colBarInner.Length; i++)
{
brBar[i] = new SolidBrush(colBarInner[i]);
}
int nWidthBarWithScale = (int)(nWidthBar * xScale);
for (int colIndex = 0; colIndex < data.ColumnCount; colIndex++)
{
if (!drawAllDataField)
{
break;
}
#region Draw bars
int selectedBarColor = 0;
for (int rowIndex = 0; rowIndex < data.RowCount; rowIndex++)
{
double d = data.ValueDouble(rowIndex, colIndex);
bool isOverflow = false;
if (d > 0 && d > MaxInTopOfChartArea)
{
isOverflow = true;
d = MaxInTopOfChartArea;
}
if (d < 0 && d < MinInBottomOfChartArea)
{
isOverflow = true;
d = MinInBottomOfChartArea;
}
int yMustDraw = (int)(d * maxminHeight);
if (yMustDraw == 0)
{
yMustDraw = nWidthBorderOfBarLine;
}
Rectangle rcDraw;
int xDraw2 = 0;
if (bR2L)
{
xDraw2 = (int)rcChartDrawArea.Right - (int)(xDraw * xScale) - nWidthBarWithScale;
}
else
{
xDraw2 = (int)(xDraw * xScale) + (int)rcChartDrawArea.Left;
}
if (yMustDraw >= 0)
{
rcDraw = new Rectangle(
xDraw2, AxisFromTop - yMustDraw,
nWidthBarWithScale, yMustDraw);
}
else
{
rcDraw = new Rectangle(
xDraw2, AxisFromTop,
nWidthBarWithScale, -yMustDraw);
}
if (rcChartDrawArea.Contains(rcDraw))
{
bool bValidValue = data.Valid(rowIndex, colIndex);
if (bValidValue)
{
grChart.FillRectangle(brBar[selectedBarColor], rcDraw);
}
ItemDrawInfo item = new ItemDrawInfo
{
Rect = rcDraw,
IsOverflow = isOverflow,
ColIndex = colIndex,
RowIndex = rowIndex
};
barLocation.Add(item);
if (bValidValue)
{
if (nWidthBorderOfBarLine > 0 || d == 0)
{
grChart.DrawRectangle(penLine, rcDraw);
}
if (isOverflow && rcDraw.Height > nWidthBorderOfBarLine * 2)
{
if (d > 0)
{
grChart.DrawLine(penLine,
rcDraw.Left, rcDraw.Top - nWidthBorderOfBarLine,
rcDraw.Right, rcDraw.Top - nWidthBorderOfBarLine);
}
else if (d < 0)
{
grChart.DrawLine(penLine,
rcDraw.Left, rcDraw.Bottom + nWidthBorderOfBarLine,
rcDraw.Right, rcDraw.Bottom + nWidthBorderOfBarLine);
}
}
}
}
else
{
drawAllDataField = false;
break;
}
xDraw += (nWidthBar + nGapBarOfColumn);
selectedBarColor++;
selectedBarColor %= brBar.Length;
}
#endregion
xDraw -= nGapBarOfColumn;
xDraw += nGapColumns;
}
for (int i = 0; i < colBarInner.Length; i++)
{
brBar[i].Dispose();
}
}
penLine.Dispose();
}
