private double staticAxisMargin = 1; // px
private void CreateCommonLabels(double[] screenTicksX)
{
Size renderSize = RenderSize;
commonLabelsCanvas.Children.Clear();
UIElement[] labels = this.labels.ToArray();
double minCoordUnsorted = ToScreen(range.Min);
double maxCoordUnsorted = ToScreen(range.Max);
double minCoord = Math.Min(minCoordUnsorted, maxCoordUnsorted);
double maxCoord = Math.Max(minCoordUnsorted, maxCoordUnsorted);
double maxCoordDiff = (maxCoord - minCoord) / labels.Length / 2.0;
double minCoordToAdd = minCoord - maxCoordDiff;
double maxCoordToAdd = maxCoord + maxCoordDiff;
for (int i = 0; i < ticks.Length; i++)
{
UIElement tickLabel = labels[i];
if (tickLabel == null)
{
continue;
}
// getting real size of label
tickLabel.Measure(renderSize);
Size tickLabelSize = tickLabel.DesiredSize;
double screenX = screenTicksX[i];
double coord = screenX - getSize(tickLabelSize) / 2;
if (isStaticAxis)
{
if (Math.Abs(screenX - minCoord) < maxCoordDiff)
{
coord = screenX + staticAxisMargin;
}
else if (Math.Abs(screenX - maxCoord) < maxCoordDiff)
{
coord = screenX - getSize(tickLabelSize) - staticAxisMargin;
}
}
if (coord < minCoordToAdd || coord > maxCoordToAdd)
{
continue;
}
if (coord.IsNaN())
{
continue;
}
StackCanvas.SetCoordinate(tickLabel, coord);
commonLabelsCanvas.Children.Add(tickLabel);
}
}
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);
}
}
}
private static void OnCoordinateChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
UIElement reference = d as UIElement;
if (reference != null)
{
StackCanvas parent = VisualTreeHelper.GetParent(reference) as StackCanvas;
if (parent != null)
{
parent.InvalidateArrange();
}
}
}
private void DoDrawMayorLabels()
{
AdditionalLabelsCanvas.Children.Clear();
ITicksProvider <T> mayorTicksProvider = ticksProvider.MayorProvider;
if (mayorTicksProvider != null && MayorLabelProvider != null)
{
Size renderSize = RenderSize;
//if (renderSize.Width == 0 || renderSize.Height == 0) return;
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();
int expectedMayorLabelsCount = mayorTicks.Ticks.Length;
// 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
};
IEnumerable <FrameworkElement> additionalLabels = MayorLabelProvider.CreateLabels(newMayorTicks);
int i = 0;
foreach (FrameworkElement fe in additionalLabels)
{
fe.Measure(renderSize);
StackCanvas.SetCoordinate(fe, screenCoords[i]);
if (i + 1 < screenCoords.Length)
{
StackCanvas.SetEndCoordinate(fe, screenCoords[i + 1]);
}
AdditionalLabelsCanvas.Children.Add(fe);
i++;
}
}
}
/*protected override void OnRender(DrawingContext dc)
* {
* base.OnRender(dc);
*
* if (!rendered)
* {
* UpdateUIRepresentation();
* }
* rendered = true;
* }*/
private void InitializeComponent()
{
LayoutRoot = new Grid();
LayoutRoot.Background = new SolidColorBrush(Colors.White);
TicksPath = new Path();
TicksPath.Stroke = new SolidColorBrush(Colors.Black);
CommonLabelsCanvas = new StackCanvas();
AdditionalLabelsCanvas = new StackCanvas();
AdditionalAxisTranslate = new TranslateTransform();
LayoutRoot.Children.Add(TicksPath);
LayoutRoot.Children.Add(CommonLabelsCanvas);
LayoutRoot.Children.Add(AdditionalLabelsCanvas);
this.Content = LayoutRoot;
}
private void CreateCommonLabels(double[] screenTicksX)
{
Size renderSize = RenderSize;
CommonLabelsCanvas.Children.Clear();
List <FrameworkElement> .Enumerator labelsEnumerator = labels.GetEnumerator();
//IEnumerator<UIElement> canvasEnumerator= CommonLabelsCanvas.Children.GetEnumerator();
for (int i = 0; i < labels.Count; i++)
{
FrameworkElement tickLabel = labels[i];
Size tickLabelSize = new Size(tickLabel.ActualWidth, tickLabel.ActualHeight);
StackCanvas.SetCoordinate(tickLabel, screenTicksX[i] - getSize(tickLabelSize) / 2);
CommonLabelsCanvas.Children.Add(tickLabel);
}
}
private void CreateCommonLabels(double[] screenTicksX)
{
Size renderSize = RenderSize;
CommonLabelsCanvas.Children.Clear();
List <FrameworkElement> .Enumerator labelsEnumerator = labels.GetEnumerator();
//IEnumerator<UIElement> canvasEnumerator= CommonLabelsCanvas.Children.GetEnumerator();
for (int i = 0; i < labels.Count; i++)
{
FrameworkElement tickLabel = labels[i];
Size tickLabelSize = new Size(tickLabel.ActualWidth, tickLabel.ActualHeight);
StackCanvas.SetCoordinate(tickLabel, screenTicksX[i] - getSize(tickLabelSize) / 2);
CommonLabelsCanvas.Children.Add(tickLabel);
//if (i >= allocatedLabels)
//{
// CommonLabelsCanvas.Children.Add(tickLabel);
//}
//else
//{
// labelsEnumerator.MoveNext();
// i = CommonLabelsCanvas.Children.IndexOf(labelsEnumerator.Current);
// //labelsEnumerator.Current = tickLabel;
// //CommonLabelsCanvas.Children.
// CommonLabelsCanvas.Children[i] = tickLabel;
//}
}
//for (int j = allocatedLabels-1; j >= ticks.Length; j--) {
// CommonLabelsCanvas.Children.RemoveAt(j);
//}
//allocatedLabels = CommonLabelsCanvas.Children.Count;
}
private double staticAxisMargin = 1; // px
private void DoDrawCommonLabels(double[] screenTicksX)
{
Size renderSize = RenderSize;
commonLabelsCanvas.Children.Clear();
#if DEBUG
if (labels != null)
{
foreach (FrameworkElement item in labels)
{
if (item != null)
{
Debug.Assert(item.Parent == null);
}
}
}
#endif
double minCoordUnsorted = ToScreen(range.Min);
double maxCoordUnsorted = ToScreen(range.Max);
double minCoord = Math.Min(minCoordUnsorted, maxCoordUnsorted);
double maxCoord = Math.Max(minCoordUnsorted, maxCoordUnsorted);
double maxCoordDiff = (maxCoord - minCoord) / labels.Length / 2.0;
double minCoordToAdd = minCoord - maxCoordDiff;
double maxCoordToAdd = maxCoord + maxCoordDiff;
for (int i = 0; i < ticks.Length; i++)
{
FrameworkElement tickLabel = (FrameworkElement)labels[i];
if (tickLabel == null)
{
continue;
}
Debug.Assert(((FrameworkElement)tickLabel).Parent == null);
tickLabel.Measure(new Size(Double.PositiveInfinity, Double.PositiveInfinity));
double screenX = screenTicksX[i];
double coord = screenX;
tickLabel.HorizontalAlignment = HorizontalAlignment.Center;
tickLabel.VerticalAlignment = VerticalAlignment.Center;
if (isStaticAxis)
{
// getting real size of label
tickLabel.Measure(renderSize);
Size tickLabelSize = tickLabel.DesiredSize;
if (Math.Abs(screenX - minCoord) < maxCoordDiff)
{
coord = minCoord + staticAxisMargin;
if (placement.IsBottomOrTop())
{
tickLabel.HorizontalAlignment = HorizontalAlignment.Left;
}
else
{
tickLabel.VerticalAlignment = VerticalAlignment.Top;
}
}
else if (Math.Abs(screenX - maxCoord) < maxCoordDiff)
{
coord = maxCoord - getSize(tickLabelSize) / 2 - staticAxisMargin;
if (!placement.IsBottomOrTop())
{
tickLabel.VerticalAlignment = VerticalAlignment.Bottom;
coord = maxCoord - staticAxisMargin;
}
}
}
// label is out of visible area
if (coord < minCoord || coord > maxCoord)
{
continue;
}
if (coord.IsNaN())
{
continue;
}
StackCanvas.SetCoordinate(tickLabel, coord);
commonLabelsCanvas.Children.Add(tickLabel);
}
}
private double staticAxisMargin = 1; // px
private void DrawCommonLabels(double[] screenTicksX)
{
Size renderSize = RenderSize;
commonLabelsCanvas.Children.Clear();
#if DEBUG
if (labels != null)
{
foreach (FrameworkElement item in labels)
{
Debug.Assert(item.Parent == null);
}
}
#endif
double minCoordUnsorted = ToScreen(range.Min);
double maxCoordUnsorted = ToScreen(range.Max);
double minCoord = Math.Min(minCoordUnsorted, maxCoordUnsorted);
double maxCoord = Math.Max(minCoordUnsorted, maxCoordUnsorted);
double maxCoordDiff = (maxCoord - minCoord) / labels.Length / 2.0;
double minCoordToAdd = minCoord - maxCoordDiff;
double maxCoordToAdd = maxCoord + maxCoordDiff;
for (int i = 0; i < ticks.Length; i++)
{
UIElement tickLabel = labels[i];
Debug.Assert(((FrameworkElement)tickLabel).Parent == null);
if (tickLabel == null)
{
continue;
}
// getting real size of label
tickLabel.Measure(renderSize);
Size tickLabelSize = tickLabel.DesiredSize;
double screenX = screenTicksX[i];
double coord = screenX;
if (isStaticAxis)
{
if (Math.Abs(screenX - minCoord) < maxCoordDiff)
{
coord = screenX + staticAxisMargin;
}
else if (Math.Abs(screenX - maxCoord) < maxCoordDiff)
{
coord = screenX - getSize(tickLabelSize) - staticAxisMargin;
}
}
if (coord < minCoordToAdd || coord > maxCoordToAdd)
{
continue;
}
if (coord.IsNaN())
{
continue;
}
StackCanvas.SetCoordinate(tickLabel, coord);
commonLabelsCanvas.Children.Add(tickLabel);
}
}
internal void UpdateUI()
{
if (range.IsEmpty)
{
return;
}
if (transform == null)
{
return;
}
if (independent)
{
InitTransform(RenderSize);
}
bool isHorizontal = Placement == AxisPlacement.Bottom || Placement == AxisPlacement.Top;
if (transform.ScreenRect.Width == 0 && isHorizontal ||
transform.ScreenRect.Height == 0 && !isHorizontal)
{
return;
}
if (!IsMeasureValid)
{
InvalidateMeasure();
}
Range <double> currentDoubleRange = new Range <double>(convertToDouble(range.Min), convertToDouble(range.Max));
bool sameLength = Math.Abs(cachedPartLength - currentDoubleRange.GetLength()) / cachedPartLength < 0.01 || cachedPartLength == 0;
if (UseSmoothPanning && sameLength)
{
Debug.WriteLine(Placement + " " + range + " " + axisLongRange);
// current range is included into axisLongRange
if (currentDoubleRange < axisLongRange)
{
var axisContent = (FrameworkElement)mainGrid.Children[0];
double leftScreen;
if (placement.IsBottomOrTop())
{
leftScreen = ((axisLongRange.Min - currentDoubleRange.Min) / currentDoubleRange.GetLength() + 1) * getSize(transform.ScreenRect.Size);
}
else
{
leftScreen = -((axisLongRange.Min - currentDoubleRange.Min) / currentDoubleRange.GetLength() + 1) * getSize(transform.ScreenRect.Size);
}
StackCanvas.SetCoordinate(axisContent, leftScreen);
// this call should be commented
// double rightScreen = ((axisLongRange.Max - currentDoubleRange.Max) / currentDoubleRange.GetLength() + 1) * getSize(transform.ScreenRect.Size);
// StackCanvas.SetEndCoordinate(axisContent, rightScreen);
}
else
{
double length = currentDoubleRange.GetLength();
cachedPartLength = length;
// cached axis part is three times longer
double min = currentDoubleRange.Min - length;
double max = currentDoubleRange.Max + length;
Range <T> widerRange = new Range <T>(convertFromDouble(min), convertFromDouble(max));
axisLongRange = new Range <double>(min, max);
// rebuild entire ticks
FillParts(widerRange);
Debug.WriteLine("не шире " + Placement + " " + widerRange);
originalScreenTicks = screenTicks.ToArray();
}
// updating screen ticks (for axis grid)
// 3 is a ratio of cached area to visible area
double shift = (currentDoubleRange.Min - (axisLongRange.Min + axisLongRange.GetLength() / 3)) * getSize(transform.ScreenRect.Size);
if (!placement.IsBottomOrTop())
{
shift *= -1;
}
screenTicks = originalScreenTicks.ToArray();
for (int i = 0; i < originalScreenTicks.Length; i++)
{
screenTicks[i] -= shift;
}
}
else
{
FillParts(range);
}
ScreenTicksChanged.Raise(this);
}