protected virtual void DrawInitialActualSpaceOverlays(GraphicsWrapper g, ChartSeries timeBasedSeries)
{
{// X Axis labels.
float totalItemWidth = _seriesItemWidth + _seriesItemMargin;
float actualXSpacing = _xAxisLabelSpacing * totalItemWidth;
if (_considerAxisLabelsSpacingScale)
{
int xScaling = Math.Abs((int)(1 / _graphicsWrapper.DrawingSpaceTransform.Elements[0]));
if (xScaling > 1)
{
actualXSpacing = actualXSpacing * xScaling;
}
}
// Set starting to the closes compatible positionactualXSpacing
// TODO : this can be optimized further by narrowing the range of xStart to end
float xStart = (int)(_drawingSpaceDisplayLimit.X / actualXSpacing);
xStart = xStart * actualXSpacing;
for (float i = xStart; i < _drawingSpaceDisplayLimit.X + _drawingSpaceDisplayLimit.Width; i += actualXSpacing)
{
PointF point = GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(i, 0), true);
if (point.X > _actualDrawingSpaceArea.X - 10
&& point.X < _actualDrawingSpaceArea.X + _actualDrawingSpaceArea.Width)
{
int index = (int)(i / totalItemWidth);
string message = string.Empty;
if (timeBasedSeries != null)
{// If there is a leading dateAssignedSeries show labels based on its timing.
if (timeBasedSeries.MaximumIndex > index)
{
message = GeneralHelper.GetShortDateTime(timeBasedSeries.GetTimeAtIndex(index));
}
}
else
{
message = index.ToString(_xAxisLabelsFormat);
}
if (_axisLabelsFont != null && _xAxisLabelsFontBrush != null)
{
g.DrawString(message, _axisLabelsFont, _xAxisLabelsFontBrush, point.X, _actualDrawingSpaceArea.Y + _actualDrawingSpaceArea.Height);
}
// Draw the small line indicating where the string applies for.
g.DrawLine(_actualDrawingSpaceAreaBorderPen, point.X, _actualDrawingSpaceArea.Y + _actualDrawingSpaceArea.Height, point.X, _actualDrawingSpaceArea.Y + _actualDrawingSpaceArea.Height + 5);
}
}
}
if (_axisLabelsFont != null && _xAxisLabelsFontBrush != null)
{
_actualDrawingSpaceAreaMarginBottom = 20;
}
else
{
_actualDrawingSpaceAreaMarginBottom = 8;
}
{// Y Axis labels.
int? yAxisLabelsWidth = null;
float actualYSpacing = _yAxisLabelSpacing;
if (_considerAxisLabelsSpacingScale)
{
int yScaling = Math.Abs((int)(1 / _graphicsWrapper.DrawingSpaceTransform.Elements[3]));
if (yScaling > 1)
{
actualYSpacing = actualYSpacing * yScaling;
}
}
// Set starting to the closes compatible positionactualXSpacing
int maxDecimalPlaces = actualYSpacing.ToString().Length - 1;
float yStart = (int)(_drawingSpaceDisplayLimit.Y / actualYSpacing);
yStart = yStart * actualYSpacing;
// Round off to a fixed number of post decimal point digits, will only work for values under 1
yStart = (float)Math.Round(yStart, maxDecimalPlaces);
{
//float minLabelValue = yStart;
//float maxLabelValue = _drawingSpaceDisplayLimit.Y + _drawingSpaceDisplayLimit.Height;
// Harry--Modified
// This must auto adjust to format the number properly and always fit in 6 spaces.
// Specify positive, negative and zero formats.
_yAxisLabelsFormat = " #0.#####;-#0.#####; Zero";
//_yAxisLabelsFormat = " #0.##;-#0.##; Zero";
// original
//_yAxisLabelsFormat = " #0.#####;-#0.#####; Zero";
//_yAxisLabelsFormat = " 0.000;-0.000;Zero";
// The default is 6 positions total for the y axis labels.
yAxisLabelsWidth = ((int)g.MeasureString("00.00000", _axisLabelsFont).Width);
//yAxisLabelsWidth = ((int)g.MeasureString("00.00", _axisLabelsFont).Width);
}
if (yAxisLabelsWidth.HasValue)
{// Calculate the current margin and confirm with any controling subscriber.
_actualDrawingSpaceAreaMarginLeft = yAxisLabelsWidth.Value + 5;
if (ActualDrawingSpaceMarginLeftUpdateEvent != null)
{
_actualDrawingSpaceAreaMarginLeft = ActualDrawingSpaceMarginLeftUpdateEvent(this, _actualDrawingSpaceAreaMarginLeft);
}
}
// Pass 2 - actually draw the labels and label lines at the established and confirmed location.
for (float i = yStart; i < _drawingSpaceDisplayLimit.Y + _drawingSpaceDisplayLimit.Height; i += actualYSpacing)
{
i = (float)Math.Round(i, maxDecimalPlaces);
PointF point = GraphicsWrapper.DrawingSpaceToActualSpace(new PointF(0, i), true);
if (point.Y > _actualDrawingSpaceArea.Y &&
point.Y < _actualDrawingSpaceArea.Y + _actualDrawingSpaceArea.Height)
{
if (_axisLabelsFont != null && _yAxisLabelsFontBrush != null)
{
g.DrawString((i).ToString(_yAxisLabelsFormat), _axisLabelsFont, _yAxisLabelsFontBrush, _actualDrawingSpaceAreaMarginLeft - yAxisLabelsWidth.Value - 3, point.Y);
}
// Draw the small line indicating where the string applies for.
g.DrawLine(_actualDrawingSpaceAreaBorderPen, _actualDrawingSpaceAreaMarginLeft - 5, point.Y, _actualDrawingSpaceAreaMarginLeft, point.Y);
}
}
}
if (ShowSeriesLabels)
{
_actualDrawingSpaceAreaMarginTop = 30;
}
else
{
_actualDrawingSpaceAreaMarginTop = 5;
}
UpdateActualDrawingSpaceArea();
// Actual space, drawing area, grid.
_actualSpaceGrid.Draw(g, _actualDrawingSpaceArea, _actualDrawingSpaceArea, 1);
if (ShowSeriesLabels)
{
DrawGraphicSeriesLabels(g, _actualDrawingSpaceArea.Left);
}
// Show
if (_customObjectsManager.IsBuildingObject)
{
g.DrawImageUnscaledAndClipped(_customObjectDrawingImage, new Rectangle(4, (int)LabelsTopMargin, _customObjectDrawingImage.Width, _customObjectDrawingImage.Height));
}
}
