private void DoDrawMayorLabels()
{
additionalLabelsCanvas.Children.Clear();
ITicksProvider <T> mayorTicksProvider = ticksProvider.MayorProvider;
if (mayorTicksProvider != null && MayorLabelProvider != null)
{
Size renderSize = RenderSize;
var mayorTicks = mayorTicksProvider.GetTicks(range, DefaultTicksProvider.DefaultTicksCount);
double[] screenCoords = mayorTicks.Ticks.Select(tick => createDataPoint(convertToDouble(tick))).
Select(p => p.DataToScreen(transform)).Select(p => getCoordinate(p)).ToArray();
// todo this is not the best decision - when displaying, for example,
// milliseconds, it causes to create hundreds and thousands of textBlocks.
double rangesRatio = GetRangesRatio(mayorTicks.Ticks.GetPairs().ToArray()[0], range);
object info = mayorTicks.Info;
MayorLabelsInfo newInfo = new MayorLabelsInfo
{
Info = info,
MayorLabelsCount = (int)Math.Ceiling(rangesRatio)
};
var newMayorTicks = new TicksInfo <T>
{
Info = newInfo,
Ticks = mayorTicks.Ticks,
TickSizes = mayorTicks.TickSizes
};
UIElement[] additionalLabels = MayorLabelProvider.CreateLabels(newMayorTicks);
for (int i = 0; i < additionalLabels.Length; i++)
{
if (screenCoords[i].IsNaN())
{
continue;
}
UIElement tickLabel = additionalLabels[i];
tickLabel.Measure(renderSize);
StackCanvas.SetCoordinate(tickLabel, screenCoords[i]);
StackCanvas.SetEndCoordinate(tickLabel, screenCoords[i + 1]);
if (tickLabel is FrameworkElement)
{
((FrameworkElement)tickLabel).LayoutTransform = additionalLabelTransform;
}
additionalLabelsCanvas.Children.Add(tickLabel);
}
}
}
public override UIElement[] CreateLabels(ITicksInfo <DateTime> ticksInfo)
{
object info = ticksInfo.Info;
var ticks = ticksInfo.Ticks;
UIElement[] res = new UIElement[ticks.Length - 1];
int labelsNum = 3;
if (info is DifferenceIn)
{
DifferenceIn diff = (DifferenceIn)info;
DateFormat = GetDateFormat(diff);
}
else if (info is MayorLabelsInfo)
{
MayorLabelsInfo mInfo = (MayorLabelsInfo)info;
DifferenceIn diff = (DifferenceIn)mInfo.Info;
DateFormat = GetDateFormat(diff);
labelsNum = mInfo.MayorLabelsCount + 1;
//DebugVerify.Is(labelsNum < 100);
}
DebugVerify.Is(ticks.Length < 10);
LabelTickInfo <DateTime> tickInfo = new LabelTickInfo <DateTime>();
for (int i = 0; i < ticks.Length - 1; i++)
{
tickInfo.Info = info;
tickInfo.Tick = ticks[i];
string tickText = GetString(tickInfo);
Grid grid = new Grid
{
Background = Brushes.Beige
};
Rectangle rect = new Rectangle
{
Stroke = Brushes.Peru,
StrokeThickness = 2
};
Grid.SetColumn(rect, 0);
Grid.SetColumnSpan(rect, labelsNum);
for (int j = 0; j < labelsNum; j++)
{
grid.ColumnDefinitions.Add(new ColumnDefinition());
}
grid.Children.Add(rect);
for (int j = 0; j < labelsNum; j++)
{
var tb = new TextBlock
{
Text = tickText,
HorizontalAlignment = HorizontalAlignment.Center,
Margin = new Thickness(0, 3, 0, 3)
};
Grid.SetColumn(tb, j);
grid.Children.Add(tb);
}
ApplyCustomView(tickInfo, grid);
res[i] = grid;
}
return(res);
}