/// <summary>
/// Renders the polygon annotation.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="model">The plot model.</param>
public override void Render(IRenderContext rc, PlotModel model)
{
base.Render(rc, model);
this.screenPosition = this.Transform(this.X, this.Y);
// clip to the area defined by the axes
var clippingRectangle = this.GetClippingRect();
rc.DrawMarker(clippingRectangle, this.screenPosition, this.Shape, this.CustomOutline, this.Size, this.Fill, this.Stroke, this.StrokeThickness);
if (!string.IsNullOrEmpty(this.Text))
{
var dx = -(int)this.TextHorizontalAlignment * (this.Size + this.TextMargin);
var dy = -(int)this.TextVerticalAlignment * (this.Size + this.TextMargin);
var textPosition = this.screenPosition + new ScreenVector(dx, dy);
rc.DrawClippedText(
clippingRectangle,
textPosition,
this.Text,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
this.TextRotation,
this.TextHorizontalAlignment,
this.TextVerticalAlignment);
}
}
/// <summary>
/// Erzeugt eine neue Instanz eines ColorPicker-Objekts und initialisiert diese
/// mit der Farbe, auf welche der Farbwähler beim Aufruf aus Sicht des Spielers zeigt.
/// </summary>
public ColorPicker(IScreen screen, DisplayLayer drawOrder, Color def)
: base(screen, drawOrder)
{
tileSize = new ScreenPoint (screen, 0.032f, 0.032f);
// Widget-Attribute
BackgroundColorFunc = (s) => Design.WidgetBackground;
ForegroundColorFunc = (s) => Design.WidgetForeground;
AlignX = HorizontalAlignment.Left;
AlignY = VerticalAlignment.Top;
// die Farb-Tiles
colors = new List<Color> (CreateColors (64));
colors.Sort (ColorHelper.SortColorsByLuminance);
tiles = new List<ScreenPoint> (CreateTiles (colors));
// einen Spritebatch
spriteBatch = new SpriteBatch (screen.GraphicsDevice);
// Position und Größe
Bounds.Position = ScreenPoint.Centered (screen, Bounds);
Bounds.Size.RelativeFunc = () => {
float sqrt = (float)Math.Ceiling (Math.Sqrt (colors.Count));
return tileSize * sqrt;
};
// Die Callback-Funktion zur Selektion setzt das SelectedColor-Attribut
ColorSelected += (color, time) => {
SelectedColor = color;
};
}
private static DataPoint? GetNearestPoint(ISeries s, ScreenPoint point, bool snap, bool pointsOnly)
{
if (s == null)
return null;
if (snap || pointsOnly)
{
ScreenPoint spn;
DataPoint dpn;
if (s.GetNearestPoint(point, out dpn, out spn) && snap)
{
if (spn.DistanceTo(point) < 20)
return dpn;
}
}
ScreenPoint sp;
DataPoint dp;
if (!pointsOnly)
if (s.GetNearestInterpolatedPoint(point, out dp, out sp))
return dp;
return null;
}
/// <summary>
/// Initializes a new instance of the <see cref="HitTestResult" /> class.
/// </summary>
/// <param name="element">The element that was hit.</param>
/// <param name="nearestHitPoint">The nearest hit point.</param>
/// <param name="item">The item.</param>
/// <param name="index">The index.</param>
public HitTestResult(UIElement element, ScreenPoint nearestHitPoint, object item = null, double index = 0)
{
this.Element = element;
this.NearestHitPoint = nearestHitPoint;
this.Item = item;
this.Index = index;
}
/// <summary>
/// Initializes a new instance of the <see cref="OxyTouchEventArgs" /> class.
/// </summary>
/// <param name="currentTouches">The current touches.</param>
/// <param name="previousTouches">The previous touches.</param>
public OxyTouchEventArgs(ScreenPoint[] currentTouches, ScreenPoint[] previousTouches)
{
this.Position = currentTouches[0];
if (currentTouches.Length == previousTouches.Length)
{
this.DeltaTranslation = currentTouches[0] - previousTouches[0];
}
double scale = 1;
if (currentTouches.Length > 1 && currentTouches.Length == previousTouches.Length)
{
var currentDistance = (currentTouches[1] - currentTouches[0]).Length;
var previousDistance = (previousTouches[1] - previousTouches[0]).Length;
scale = currentDistance / previousDistance;
if (scale < 0.5)
{
scale = 0.5;
}
if (scale > 2)
{
scale = 2;
}
}
this.DeltaScale = new ScreenVector(scale, scale);
}
public void EndpointsOutsideArea()
{
var clipping = new CohenSutherlandClipping(new OxyRect(0, 0, 1, 1));
var p0 = new ScreenPoint(0.3, -0.2);
var p1 = new ScreenPoint(0.6, 1.3);
Assert.IsTrue(clipping.ClipLine(ref p0, ref p1));
Assert.AreEqual(0, p0.Y);
Assert.AreEqual(1, p1.Y);
}
public void EndpointsOutsideArea2()
{
var clipping = new CohenSutherlandClipping(new OxyRect(0.3, -0.5, 0.5, 1));
var p0 = new ScreenPoint(0, 0);
var p1 = new ScreenPoint(1, 0);
Assert.IsTrue(clipping.ClipLine(ref p0, ref p1));
Assert.AreEqual(new ScreenPoint(0.3, 0), p0);
Assert.AreEqual(new ScreenPoint(0.8, 0), p1);
}
public void ClipLine_EndpointsInsideArea()
{
var clipping = new CohenSutherlandClipping(0, 1, 0, 1);
var p0 = new ScreenPoint(0.3, 0.2);
var p1 = new ScreenPoint(0.6, 0.8);
Assert.IsTrue(clipping.ClipLine(ref p0, ref p1));
Assert.AreEqual(0.2, p0.Y);
Assert.AreEqual(0.8, p1.Y);
}
public TweenEffect(ScreenPoint startpoint, ScreenPoint endpoint, int time)
{
this.StartLocation = startpoint;
this.EndLocation = endpoint;
this.CurrentLocation = new ScreenPoint(this.StartLocation.X, this.StartLocation.Y);
this.Time = time;
this.Finished = (endpoint.X == startpoint.X && endpoint.Y == startpoint.Y);
}
public override void OnMouseMove(ScreenPoint pt, bool control, bool shift)
{
if (currentSeries == null)
return;
var current = GetNearestPoint(currentSeries, pt, !control, shift);
if (current != null)
pc.ShowSlider(currentSeries, current.Value);
}
public void ClipLine_LineOutsideArea()
{
var clipping = new CohenSutherlandClipping(0, 1, 0, 1);
var p0 = new ScreenPoint(0.3, -0.2);
var p1 = new ScreenPoint(0.6, -0.2);
Assert.IsFalse(clipping.ClipLine(ref p0, ref p1));
Assert.AreEqual(-0.2, p0.Y);
Assert.AreEqual(-0.2, p1.Y);
}
public void EmptyArray()
{
var points = new ScreenPoint[0];
var clippingRectangle = new OxyRect(0.3, -0.5, 0.5, 1);
var rc = Substitute.For<IRenderContext>();
var received = new List<ScreenPoint>();
rc.DrawClippedLine(clippingRectangle, points, 1, OxyColors.Black, 1, null, LineJoin.Miter, false, null, received.AddRange);
Assert.AreEqual(0, received.Count);
}
/// <summary>
/// Gets the touch points from the specified <see cref="MotionEvent" /> argument.
/// </summary>
/// <param name="e">The event arguments.</param>
/// <param name = "scale">The resolution scale factor.</param>
/// <returns>The touch points.</returns>
public static ScreenPoint[] GetTouchPoints(this MotionEvent e, double scale)
{
var result = new ScreenPoint[e.PointerCount];
for (int i = 0; i < e.PointerCount; i++)
{
result[i] = new ScreenPoint(e.GetX(i) / scale, e.GetY(i) / scale);
}
return result;
}
/// <summary>
/// Initializes a new instance of the <see cref="ImageAnnotation"/> class.
/// </summary>
/// <param name="image">
/// The image.
/// </param>
/// <param name="position">
/// The position in screen coordinates.
/// </param>
/// <param name="horizontalAlignment">
/// The horizontal alignment.
/// </param>
/// <param name="verticalAlignment">
/// The vertical alignment.
/// </param>
public ImageAnnotation(
OxyImage image,
ScreenPoint position,
HorizontalAlignment horizontalAlignment = OxyPlot.HorizontalAlignment.Center,
VerticalAlignment verticalAlignment = OxyPlot.VerticalAlignment.Middle)
: this()
{
this.ImageSource = image;
this.X = new PlotLength(position.X, PlotLengthUnit.ScreenUnits);
this.Y = new PlotLength(position.Y, PlotLengthUnit.ScreenUnits);
this.HorizontalAlignment = horizontalAlignment;
this.VerticalAlignment = verticalAlignment;
}
public BaseCamera(int x, int y, int width, int height)
{
this.screen = new Rectangle(x, y, width, height);
this.halfscreen = new ScreenPoint(screen.Width / 2, screen.Height / 2);
this.Viewport = new Viewport()
{
X = x,
Y = y,
Width = width,
Height = height
};
}
/// <summary>
/// Gets the point on the series that is nearest the specified point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">Interpolate the series if this flag is set to <c>true</c>.</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
if (this.XAxis == null || this.YAxis == null)
{
return null;
}
if (interpolate)
{
return null;
}
TrackerHitResult result = null;
// http://paulbourke.net/geometry/pointlineplane/
double minimumDistance = double.MaxValue;
var points = this.ActualPoints;
for (int i = 0; i < points.Count; i++)
{
var p1 = points[i];
var basePoint = new DataPoint(p1.X, this.Base);
var sp1 = this.Transform(p1);
var sp2 = this.Transform(basePoint);
var u = ScreenPointHelper.FindPositionOnLine(point, sp1, sp2);
if (double.IsNaN(u))
{
continue;
}
if (u < 0 || u > 1)
{
continue; // outside line
}
var sp = sp1 + ((sp2 - sp1) * u);
double distance = (point - sp).LengthSquared;
if (distance < minimumDistance)
{
result = new TrackerHitResult(
this, new DataPoint(p1.X, p1.Y), new ScreenPoint(sp1.x, sp1.y), this.GetItem(i));
minimumDistance = distance;
}
}
return result;
}
/// <summary>
/// Occurs when the input device changes position during a manipulation.
/// </summary>
/// <param name="e">The <see cref="OxyPlot.OxyMouseEventArgs" /> instance containing the event data.</param>
public override void Delta(OxyMouseEventArgs e)
{
base.Delta(e);
if (this.XAxis != null)
{
this.XAxis.Pan(this.PreviousPosition, e.Position);
}
if (this.YAxis != null)
{
this.YAxis.Pan(this.PreviousPosition, e.Position);
}
this.PlotView.InvalidatePlot(false);
this.PreviousPosition = e.Position;
}
/// <summary>
/// Occurs when the input device changes position during a manipulation.
/// </summary>
/// <param name="e">
/// The <see cref="OxyPlot.ManipulationEventArgs"/> instance containing the event data.
/// </param>
public override void Delta(ManipulationEventArgs e)
{
base.Delta(e);
if (this.XAxis != null)
{
this.PlotControl.Pan(this.XAxis, this.PreviousPosition, e.CurrentPosition);
}
if (this.YAxis != null)
{
this.PlotControl.Pan(this.YAxis, this.PreviousPosition, e.CurrentPosition);
}
this.PlotControl.RefreshPlot(false);
this.PreviousPosition = e.CurrentPosition;
}
public void DrawLines(IEnumerable<ScreenPoint> points, OxyColor stroke, double thickness, double[] dashArray,
OxyPenLineJoin lineJoin, bool aliased)
{
var startPoint = new ScreenPoint();
bool first = true;
foreach (var p in points)
{
if (!first)
{
Add(new Line { X1 = startPoint.X, Y1 = startPoint.Y, X2 = p.X, Y2 = p.Y });
}
else
{
startPoint = p;
}
first = !first;
}
}
public override void OnMouseDown(ScreenPoint pt, OxyMouseButton button, int clickCount, bool control, bool shift)
{
base.OnMouseDown(pt, button, clickCount, control, shift);
if (button != OxyMouseButton.Left)
return;
// Middle button double click adds an annotation
if (clickCount == 2)
{
// pc.Annotations.
pc.Refresh();
}
currentSeries = pc.GetSeriesFromPoint(pt) as DataSeries;
OnMouseMove(pt, control, shift);
//pc.CaptureMouse();
// pc.Cursor = Cursors.Cross;
}
/// <summary>
/// Converts a <see cref="T:Point" /> array to a <see cref="ScreenPoint" /> array.
/// </summary>
/// <param name="points">The points.</param>
/// <returns>A <see cref="ScreenPoint" /> array.</returns>
public static ScreenPoint[] ToScreenPointArray(this Point[] points)
{
if (points == null)
{
return null;
}
var pts = new ScreenPoint[points.Length];
for (int i = 0; i < points.Length; i++)
{
pts[i] = points[i].ToScreenPoint();
}
return pts;
}
/// <summary>
/// Gets the point in the dataset that is nearest the specified point.
/// </summary>
/// <param name="point">
/// The point.
/// </param>
/// <param name="interpolate">
/// The interpolate.
/// </param>
/// <returns>
/// A TrackerHitResult for the current hit.
/// </returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
for (int i = 0; i < this.ActualMinimumBarRectangles.Count; i++)
{
var r = this.ActualMinimumBarRectangles[i];
if (r.Contains(point))
{
var item = (TornadoBarItem)this.GetItem(this.ValidItemsIndexInversion[i]);
var categoryIndex = item.GetCategoryIndex(i);
var value = this.ValidItems[i].Minimum;
var dp = new DataPoint(categoryIndex, value);
var text = StringHelper.Format(this.ActualCulture, this.TrackerFormatString, item, value);
return new TrackerHitResult(this, dp, point, item, i, text);
}
r = this.ActualMaximumBarRectangles[i];
if (r.Contains(point))
{
var item = (TornadoBarItem)this.GetItem(this.ValidItemsIndexInversion[i]);
var categoryIndex = item.GetCategoryIndex(i);
var value = this.ValidItems[i].Maximum;
var dp = new DataPoint(categoryIndex, value);
var text = StringHelper.Format(this.ActualCulture, this.TrackerFormatString, item, value);
return new TrackerHitResult(this, dp, point, item, i, text);
}
}
return null;
}
/// <summary>
/// Applies an offset to a screen point.
/// </summary>
/// <param name="screenPoint">The screen point.</param>
/// <param name="offset">The offset.</param>
/// <returns>The translated screen point.</returns>
private static ScreenPoint Translate(ScreenPoint screenPoint, double offset)
{
return(new ScreenPoint(screenPoint.X + offset, screenPoint.Y));
}
/// <summary>
/// Transforms from a screen point to a data point by the axes of this series.
/// </summary>
/// <param name="p">The screen point.</param>
/// <returns>A data point.</returns>
public DataPoint InverseTransform(ScreenPoint p)
{
return(this.XAxis.InverseTransform(p.X, p.Y, this.YAxis));
}
/// <summary>
/// Gets the nearest point.
/// </summary>
/// <param name="points">The points (data coordinates).</param>
/// <param name="point">The point (screen coordinates).</param>
/// <returns>A <see cref="TrackerHitResult" /> if a point was found, <c>null</c> otherwise.</returns>
/// <remarks>The Text property of the result will not be set, since the formatting depends on the various series.</remarks>
protected TrackerHitResult GetNearestPointInternal(IEnumerable <DataPoint> points, ScreenPoint point)
{
var spn = default(ScreenPoint);
var dpn = default(DataPoint);
double index = -1;
double minimumDistance = double.MaxValue;
int i = 0;
foreach (var p in points)
{
if (!this.IsValidPoint(p))
{
i++;
continue;
}
var sp = this.XAxis.Transform(p.x, p.y, this.YAxis);
double d2 = (sp - point).LengthSquared;
if (d2 < minimumDistance)
{
dpn = p;
spn = sp;
minimumDistance = d2;
index = i;
}
i++;
}
if (minimumDistance < double.MaxValue)
{
var item = this.GetItem((int)Math.Round(index));
return(new TrackerHitResult
{
Series = this,
DataPoint = dpn,
Position = spn,
Item = item,
Index = index
});
}
return(null);
}
private static Point ToPoint(ScreenPoint point)
{
return new Point(point.X, point.Y);
}
/// <summary>
/// Transforms orientated screen space coordinates to data space coordinates.
/// </summary>
/// <param name="point">The point to inverse transform.</param>
/// <returns>The inverse transformed point.</returns>
public new DataPoint InverseTransform(ScreenPoint point)
{
return(base.InverseTransform(this.Orientate(point)));
}
/// <summary>
/// Transforms the specified screen position to a data point.
/// </summary>
/// <param name="position">The position.</param>
/// <returns>A data point</returns>
public DataPoint InverseTransform(ScreenPoint position)
{
return(this.XAxis.InverseTransform(position.X, position.Y, this.YAxis));
}
/// <summary>
/// Gets the point on the series that is nearest the specified point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">Interpolate the series if this flag is set to <c>true</c>.</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public virtual TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
return(null);
}
/// <summary>
/// Renders by an image sized from the available plot area.
/// </summary>
/// <param name="rc">The rc.</param>
/// <param name="model">The model.</param>
public void RenderDynamic(IRenderContext rc, PlotModel model)
{
int m = this.Data.GetLength(0);
int n = this.Data.GetLength(1);
// get the available plot area
var dest = model.PlotArea;
int width = (int)dest.Width;
int height = (int)dest.Height;
if (width == 0 || height == 0)
{
return;
}
if (this.pixels == null || this.pixels.GetLength(0) != height || this.pixels.GetLength(1) != width)
{
this.pixels = new OxyColor[width, height];
}
var p = this.pixels;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
// transform from screen to magnitude/angle
var sp = new ScreenPoint(dest.Left + x, dest.Top + y);
var xy = this.InverseTransform(sp);
double angle;
double magnitude;
if (this.PlotModel.PlotType != PlotType.Polar)
{
angle = Math.Atan2(xy.Y, xy.X) / Math.PI * 180;
magnitude = Math.Sqrt((xy.X * xy.X) + (xy.Y * xy.Y));
}
else
{
angle = xy.Y / Math.PI * 180;
magnitude = xy.X;
if (angle < 0)
{
angle += 360;
}
}
// transform to indices in the Data array
var ii = (angle - this.Angle0) / (this.Angle1 - this.Angle0) * m;
var jj = (magnitude - this.Magnitude0) / (this.Magnitude1 - this.Magnitude0) * n;
if (ii >= 0 && ii < m && jj >= 0 && jj < n)
{
// get the (interpolated) value
var value = this.GetValue(ii, jj);
// use the color axis to get the color
p[x, y] = OxyColor.FromAColor(160, this.ColorAxis.GetColor(value));
}
else
{
// outside the range of the Data array
p[x, y] = OxyColors.Transparent;
}
}
}
// Create the PNG image
this.image = OxyImage.Create(p, ImageFormat.Png);
// Render the image
var clip = this.GetClippingRect();
rc.DrawClippedImage(clip, this.image, dest.Left, dest.Top, dest.Width, dest.Height, 1, false);
}
/// <summary>
/// Gets the point on the series that is nearest the specified point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">Interpolate the series if this flag is set to <c>true</c>.</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
if (this.XAxis == null || this.YAxis == null || interpolate || this.Items.Count == 0)
{
return(null);
}
var nbars = this.Items.Count;
var xy = this.InverseTransform(point);
var targetX = xy.X;
// punt if beyond start & end of series
if (targetX > (this.Items[nbars - 1].X + this.minDx) || targetX < (this.Items[0].X - this.minDx))
{
return(null);
}
var pidx = this.FindWindowStartIndex(this.Items, item => item.X, targetX, this.WindowStartIndex);
var nidx = ((pidx + 1) < this.Items.Count) ? pidx + 1 : pidx;
Func <HighLowItem, double> distance = bar =>
{
var dx = bar.X - xy.X;
var dyo = bar.Open - xy.Y;
var dyh = bar.High - xy.Y;
var dyl = bar.Low - xy.Y;
var dyc = bar.Close - xy.Y;
var d2O = (dx * dx) + (dyo * dyo);
var d2H = (dx * dx) + (dyh * dyh);
var d2L = (dx * dx) + (dyl * dyl);
var d2C = (dx * dx) + (dyc * dyc);
return(Math.Min(d2O, Math.Min(d2H, Math.Min(d2L, d2C))));
};
// determine closest point
var midx = distance(this.Items[pidx]) <= distance(this.Items[nidx]) ? pidx : nidx;
var mbar = this.Items[midx];
var hit = new DataPoint(mbar.X, mbar.Close);
return(new TrackerHitResult
{
Series = this,
DataPoint = hit,
Position = this.Transform(hit),
Item = mbar,
Index = midx,
Text = StringHelper.Format(
this.ActualCulture,
this.TrackerFormatString,
mbar,
this.Title,
this.XAxis.Title ?? DefaultXAxisTitle,
this.XAxis.GetValue(mbar.X),
this.YAxis.GetValue(mbar.High),
this.YAxis.GetValue(mbar.Low),
this.YAxis.GetValue(mbar.Open),
this.YAxis.GetValue(mbar.Close))
});
}
/// <summary>
/// Renders the series on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
// ReSharper disable once FunctionComplexityOverflow
public override void Render(IRenderContext rc)
{
if (this.data == null || this.data.Count == 0)
{
return;
}
var items = this.data;
var nitems = this.data.Count;
this.VerifyAxes();
var clippingBar = this.GetClippingRect(this.BarAxis);
var clippingSep = this.GetSeparationClippingRect();
var clippingVol = this.GetClippingRect(this.VolumeAxis);
var datacandlewidth = (this.CandleWidth > 0) ? this.CandleWidth : this.minDx * 0.80;
var candlewidth =
this.XAxis.Transform(items[0].X + datacandlewidth) -
this.XAxis.Transform(items[0].X) - this.StrokeThickness;
// colors
var fillUp = this.GetSelectableFillColor(this.PositiveColor);
var fillDown = this.GetSelectableFillColor(this.NegativeColor);
var barfillUp = this.PositiveHollow ? OxyColors.Transparent : fillUp;
var barfillDown = this.NegativeHollow ? OxyColors.Transparent : fillDown;
var lineUp = this.GetSelectableColor(this.PositiveColor.ChangeIntensity(this.StrokeIntensity));
var lineDown = this.GetSelectableColor(this.NegativeColor.ChangeIntensity(this.StrokeIntensity));
// determine render range
var xmin = this.XAxis.ActualMinimum;
var xmax = this.XAxis.ActualMaximum;
this.winIndex = OhlcvItem.FindIndex(items, xmin, this.winIndex);
for (int i = this.winIndex; i < nitems; i++)
{
var bar = items[i];
// if item beyond visible range, done
if (bar.X > xmax)
{
break;
}
// check to see whether is valid
if (!bar.IsValid())
{
continue;
}
var fillColor = bar.Close > bar.Open ? barfillUp : barfillDown;
var lineColor = bar.Close > bar.Open ? lineUp : lineDown;
var high = this.Transform(bar.X, bar.High);
var low = this.Transform(bar.X, bar.Low);
var open = this.Transform(bar.X, bar.Open);
var close = this.Transform(bar.X, bar.Close);
var max = new ScreenPoint(open.X, Math.Max(open.Y, close.Y));
var min = new ScreenPoint(open.X, Math.Min(open.Y, close.Y));
// Bar part
rc.DrawClippedLine(
clippingBar,
new[] { high, min },
0,
lineColor,
this.StrokeThickness,
null,
LineJoin.Miter,
true);
// Lower extent
rc.DrawClippedLine(
clippingBar,
new[] { max, low },
0,
lineColor,
this.StrokeThickness,
null,
LineJoin.Miter,
true);
// Body
var openLeft = open + new ScreenVector(-candlewidth * 0.5, 0);
if (max.Y - min.Y < 1.0)
{
var leftPoint = new ScreenPoint(openLeft.X - this.StrokeThickness, min.Y);
var rightPoint = new ScreenPoint(openLeft.X + this.StrokeThickness + candlewidth, min.Y);
rc.DrawClippedLine(clippingBar, new[] { leftPoint, rightPoint }, leftPoint.DistanceToSquared(rightPoint), lineColor, this.StrokeThickness, null, LineJoin.Miter, true);
leftPoint = new ScreenPoint(openLeft.X - this.StrokeThickness, max.Y);
rightPoint = new ScreenPoint(openLeft.X + this.StrokeThickness + candlewidth, max.Y);
rc.DrawClippedLine(clippingBar, new[] { leftPoint, rightPoint }, leftPoint.DistanceToSquared(rightPoint), lineColor, this.StrokeThickness, null, LineJoin.Miter, true);
}
else
{
var rect = new OxyRect(openLeft.X, min.Y, candlewidth, max.Y - min.Y);
rc.DrawClippedRectangleAsPolygon(clippingBar, rect, fillColor, lineColor, this.StrokeThickness);
}
// Volume Part
if (this.VolumeAxis == null || this.VolumeStyle == VolumeStyle.None)
{
continue;
}
var iY0 = this.VolumeAxis.Transform(0);
switch (this.VolumeStyle)
{
case VolumeStyle.Combined:
{
var adj = this.VolumeAxis.Transform(Math.Abs(bar.BuyVolume - bar.SellVolume));
var fillcolor = (bar.BuyVolume > bar.SellVolume) ? barfillUp : barfillDown;
var linecolor = (bar.BuyVolume > bar.SellVolume) ? lineUp : lineDown;
var rect1 = new OxyRect(openLeft.X, adj, candlewidth, Math.Abs(adj - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect1, fillcolor, linecolor, this.StrokeThickness);
}
break;
case VolumeStyle.PositiveNegative:
{
var buyY = this.VolumeAxis.Transform(bar.BuyVolume);
var sellY = this.VolumeAxis.Transform(-bar.SellVolume);
var rect1 = new OxyRect(openLeft.X, buyY, candlewidth, Math.Abs(buyY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect1, fillUp, lineUp, this.StrokeThickness);
var rect2 = new OxyRect(openLeft.X, iY0, candlewidth, Math.Abs(sellY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect2, fillDown, lineDown, this.StrokeThickness);
}
break;
case VolumeStyle.Stacked:
if (bar.BuyVolume > bar.SellVolume)
{
var buyY = this.VolumeAxis.Transform(bar.BuyVolume);
var sellY = this.VolumeAxis.Transform(bar.SellVolume);
var dyoffset = sellY - iY0;
var rect2 = new OxyRect(openLeft.X, sellY, candlewidth, Math.Abs(sellY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect2, fillDown, lineDown, this.StrokeThickness);
var rect1 = new OxyRect(openLeft.X, buyY + dyoffset, candlewidth, Math.Abs(buyY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect1, fillUp, lineUp, this.StrokeThickness);
}
else
{
var buyY = this.VolumeAxis.Transform(bar.BuyVolume);
var sellY = this.VolumeAxis.Transform(bar.SellVolume);
var dyoffset = buyY - iY0;
var rect1 = new OxyRect(openLeft.X, buyY, candlewidth, Math.Abs(buyY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect1, fillUp, lineUp, this.StrokeThickness);
var rect2 = new OxyRect(openLeft.X, sellY + dyoffset, candlewidth, Math.Abs(sellY - iY0));
rc.DrawClippedRectangleAsPolygon(clippingVol, rect2, fillDown, lineDown, this.StrokeThickness);
}
break;
}
}
if (this.SeparatorStrokeThickness > 0 && this.SeparatorLineStyle != LineStyle.None)
{
// draw volume & bar separation line
if (this.VolumeStyle != VolumeStyle.None)
{
var ysep = (clippingSep.Bottom + clippingSep.Top) / 2.0;
rc.DrawClippedLine(
clippingSep,
new[] { new ScreenPoint(clippingSep.Left, ysep), new ScreenPoint(clippingSep.Right, ysep) },
0,
this.SeparatorColor,
this.SeparatorStrokeThickness,
this.SeparatorLineStyle.GetDashArray(),
LineJoin.Miter,
true);
}
// draw volume y=0 line
if (this.VolumeAxis != null && this.VolumeStyle == VolumeStyle.PositiveNegative)
{
var y0 = this.VolumeAxis.Transform(0);
rc.DrawClippedLine(
clippingVol,
new[] { new ScreenPoint(clippingVol.Left, y0), new ScreenPoint(clippingVol.Right, y0) },
0,
OxyColors.Goldenrod,
this.SeparatorStrokeThickness,
this.SeparatorLineStyle.GetDashArray(),
LineJoin.Miter,
true);
}
}
}
private static Point ToPoint(ScreenPoint point)
{
return(new Point(point.X, point.Y));
}
public static ScreenPoint[] CreateCustomMarker(EarType earType, bool isNoResponse, bool addShift)
{
const double a = 0.5;
const double b = 0.375;
List <AGPoint> sUpperUpperHalf = new List <AGPoint>();
sUpperUpperHalf.Add(new AGPoint(0.5, 0));
sUpperUpperHalf.Add(new AGPoint(0.3, 0));
sUpperUpperHalf.Add(new AGPoint(0.1, 0));
sUpperUpperHalf.Add(new AGPoint(-0.1, 0));
sUpperUpperHalf.Add(new AGPoint(-0.3, 0));
sUpperUpperHalf.Add(new AGPoint(-0.5, 0));
int i = 0;
for (; i < sUpperUpperHalf.Count; i++)
{
sUpperUpperHalf[i].Y = -b - Math.Sqrt(Math.Pow(b, 2) - Math.Pow((b * sUpperUpperHalf[i].X / a), 2));
}
List <AGPoint> sUpperLowerHalf = new List <AGPoint>();
sUpperLowerHalf.Add(new AGPoint(-0.5, 0));
sUpperLowerHalf.Add(new AGPoint(-0.3, 0));
sUpperLowerHalf.Add(new AGPoint(-0.1, 0));
sUpperLowerHalf.Add(new AGPoint(0, 0));
for (i = 0; i < sUpperLowerHalf.Count; i++)
{
sUpperLowerHalf[i].Y = -b + Math.Sqrt(Math.Pow(b, 2) - Math.Pow((b * sUpperLowerHalf[i].X / a), 2));
}
List <AGPoint> sLowerUpperHalf = new List <AGPoint>();
sLowerUpperHalf.Add(new AGPoint(0.1, 0));
sLowerUpperHalf.Add(new AGPoint(0.3, 0));
sLowerUpperHalf.Add(new AGPoint(0.5, 0));
for (i = 0; i < sLowerUpperHalf.Count; i++)
{
sLowerUpperHalf[i].Y = b - Math.Sqrt(Math.Pow(b, 2) - Math.Pow((b * sLowerUpperHalf[i].X / a), 2));
}
List <AGPoint> sLowerLowerHalf = new List <AGPoint>();
sLowerLowerHalf.Add(new AGPoint(0.5, 0));
sLowerLowerHalf.Add(new AGPoint(0.3, 0));
sLowerLowerHalf.Add(new AGPoint(0.1, 0));
sLowerLowerHalf.Add(new AGPoint(-0.1, 0));
sLowerLowerHalf.Add(new AGPoint(-0.3, 0));
sLowerLowerHalf.Add(new AGPoint(-0.5, 0));
for (i = 0; i < sLowerLowerHalf.Count; i++)
{
sLowerLowerHalf[i].Y = b + Math.Sqrt(Math.Pow(b, 2) - Math.Pow((b * sLowerLowerHalf[i].X / a), 2));
}
List <ScreenPoint> marker = new List <ScreenPoint>();
for (i = sLowerLowerHalf.Count - 2; i >= 0; i--)
{
marker.Add(new ScreenPoint(sLowerLowerHalf[i].X, sLowerLowerHalf[i].Y));
}
for (i = sLowerUpperHalf.Count - 1; i >= 0; i--)
{
marker.Add(new ScreenPoint(sLowerUpperHalf[i].X, sLowerUpperHalf[i].Y));
}
for (i = sUpperLowerHalf.Count - 1; i >= 0; i--)
{
marker.Add(new ScreenPoint(sUpperLowerHalf[i].X, sUpperLowerHalf[i].Y));
}
for (i = sUpperUpperHalf.Count - 1; i >= 0; i--)
{
marker.Add(new ScreenPoint(sUpperUpperHalf[i].X, sUpperUpperHalf[i].Y));
}
for (i = 0; i < sUpperUpperHalf.Count; i++)
{
marker.Add(new ScreenPoint(sUpperUpperHalf[i].X, sUpperUpperHalf[i].Y));
}
for (i = 0; i < sUpperLowerHalf.Count; i++)
{
marker.Add(new ScreenPoint(sUpperLowerHalf[i].X, sUpperLowerHalf[i].Y));
}
for (i = 0; i < sLowerUpperHalf.Count; i++)
{
marker.Add(new ScreenPoint(sLowerUpperHalf[i].X, sLowerUpperHalf[i].Y));
}
for (i = 0; i < sLowerLowerHalf.Count; i++)
{
marker.Add(new ScreenPoint(sLowerLowerHalf[i].X, sLowerLowerHalf[i].Y));
}
if (isNoResponse)
{
ScreenPoint lastPoint = marker.Last();
ArrowMarker.AddArrowToMarker(marker, earType, lastPoint.X, lastPoint.Y);
}
if (addShift)
{
ShiftMarker.AddShift(marker, earType);
}
return(marker.ToArray());
}
private PointF ToPoint (ScreenPoint p)
{
return new PointF((float)p.X, (float)p.Y);
}
/// <summary>
/// Renders the series on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
public override void Render(IRenderContext rc)
{
if (this.Items.Count == 0)
{
return;
}
this.VerifyAxes();
var clippingRect = this.GetClippingRect();
var dashArray = this.LineStyle.GetDashArray();
var actualColor = this.GetSelectableColor(this.ActualColor);
var shadowEndColor = this.GetSelectableColor(this.ShadowEndColor);
if (this.StrokeThickness > 0 && this.LineStyle != LineStyle.None)
{
foreach (var v in this.Items)
{
if (!this.IsValidItem(v, this.XAxis, this.YAxis))
{
continue;
}
if (v.X <= this.XAxis.ActualMinimum || v.X >= this.XAxis.ActualMaximum)
{
continue;
}
var high = this.Transform(v.X, v.High);
var low = this.Transform(v.X, v.Low);
if (double.IsNaN(v.Open) || double.IsNaN(v.Close))
{
rc.DrawClippedLine(
clippingRect,
new[] { low, high },
0,
actualColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
}
else
{
var open = this.Transform(v.X, v.Open);
var close = this.Transform(v.X, v.Close);
var max = new ScreenPoint(open.X, Math.Max(open.Y, close.Y));
var min = new ScreenPoint(open.X, Math.Min(open.Y, close.Y));
// Upper shadow
rc.DrawClippedLine(
clippingRect,
new[] { high, min },
0,
actualColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
true);
// Lower shadow
rc.DrawClippedLine(
clippingRect,
new[] { max, low },
0,
actualColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
true);
// Shadow ends
if (this.ShadowEndColor.IsVisible() && this.ShadowEndLength > 0)
{
var highLeft = new ScreenPoint(high.X - (this.CandleWidth * 0.5 * this.ShadowEndLength) - 1, high.Y);
var highRight = new ScreenPoint(high.X + (this.CandleWidth * 0.5 * this.ShadowEndLength), high.Y);
rc.DrawClippedLine(
clippingRect,
new[] { highLeft, highRight },
0,
shadowEndColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
true);
var lowLeft = new ScreenPoint(low.X - (this.CandleWidth * 0.5 * this.ShadowEndLength) - 1, low.Y);
var lowRight = new ScreenPoint(low.X + (this.CandleWidth * 0.5 * this.ShadowEndLength), low.Y);
rc.DrawClippedLine(
clippingRect,
new[] { lowLeft, lowRight },
0,
shadowEndColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
true);
}
// Body
var openLeft = open + new ScreenVector(-this.CandleWidth * 0.5, 0);
var rect = new OxyRect(openLeft.X, min.Y, this.CandleWidth, max.Y - min.Y);
var fillColor = v.Close > v.Open
? this.GetSelectableFillColor(this.ActualIncreasingFill)
: this.GetSelectableFillColor(this.DecreasingFill);
rc.DrawClippedRectangleAsPolygon(clippingRect, rect, fillColor, actualColor, this.StrokeThickness);
}
}
}
}
/// <summary>
/// Renders the Series on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
/// <param name="model">The model.</param>
public override void Render(IRenderContext rc, PlotModel model)
{
this.ActualBarRectangles = new List<OxyRect>();
if (this.ValidItems.Count == 0)
{
return;
}
var clippingRect = this.GetClippingRect();
var categoryAxis = this.GetCategoryAxis();
var actualBarWidth = this.GetActualBarWidth();
var stackIndex = categoryAxis.GetStackIndex(this.StackGroup);
for (var i = 0; i < this.ValidItems.Count; i++)
{
var item = this.ValidItems[i];
var categoryIndex = item.GetCategoryIndex(i);
double categoryValue = categoryAxis.GetCategoryValue(categoryIndex, stackIndex, actualBarWidth);
var p0 = this.Transform(item.Start, categoryValue);
var p1 = this.Transform(item.End, categoryValue + actualBarWidth);
var rectangle = OxyRect.Create(p0.X, p0.Y, p1.X, p1.Y);
this.ActualBarRectangles.Add(rectangle);
rc.DrawClippedRectangleAsPolygon(
clippingRect,
rectangle,
this.GetSelectableFillColor(item.Color.GetActualColor(this.ActualFillColor)),
this.StrokeColor,
this.StrokeThickness);
if (this.LabelFormatString != null)
{
var s = this.Format(this.LabelFormatString, this.GetItem(i), item.Start, item.End, item.Title);
var pt = new ScreenPoint(
(rectangle.Left + rectangle.Right) / 2, (rectangle.Top + rectangle.Bottom) / 2);
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Center,
VerticalAlignment.Middle);
}
}
}
/// <summary>
/// Gets the nearest point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">interpolate if set to <c>true</c> .</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
if (this.XAxis == null || this.YAxis == null)
{
return(null);
}
if (interpolate)
{
return(null);
}
TrackerHitResult result = null;
double minimumDistance = double.MaxValue;
int i = 0;
var xaxisTitle = this.XAxis.Title ?? "X";
var yaxisTitle = this.YAxis.Title ?? "Y";
var colorAxisTitle = (this.ColorAxis != null ? ((Axis)this.ColorAxis).Title : null) ?? "Z";
var formatString = this.TrackerFormatString;
if (string.IsNullOrEmpty(this.TrackerFormatString))
{
// Create a default format string
formatString = "{1}: {2}\n{3}: {4}";
if (this.ColorAxis != null)
{
formatString += "\n{5}: {6}";
}
}
foreach (var p in this.ActualPointsList)
{
if (p.X < this.XAxis.ActualMinimum || p.X > this.XAxis.ActualMaximum || p.Y < this.YAxis.ActualMinimum || p.Y > this.YAxis.ActualMaximum)
{
i++;
continue;
}
var sp = this.XAxis.Transform(p.X, p.Y, this.YAxis);
double dx = sp.x - point.x;
double dy = sp.y - point.y;
double d2 = (dx * dx) + (dy * dy);
if (d2 < minimumDistance)
{
var item = this.GetItem(i) ?? p;
object xvalue = this.XAxis.GetValue(p.X);
object yvalue = this.YAxis.GetValue(p.Y);
object zvalue = null;
if (!double.IsNaN(p.Value) && !double.IsInfinity(p.Value))
{
zvalue = p.Value;
}
var text = this.Format(
formatString,
item,
this.Title,
xaxisTitle,
xvalue,
yaxisTitle,
yvalue,
colorAxisTitle,
zvalue);
result = new TrackerHitResult(this, new DataPoint(p.X, p.Y), sp, item, i, text);
minimumDistance = d2;
}
i++;
}
return(result);
}
/// <summary>
/// Renders the arrow annotation.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="model">The plot model.</param>
public override void Render(IRenderContext rc, PlotModel model)
{
base.Render(rc, model);
this.screenEndPoint = this.Transform(this.EndPoint);
if (this.ArrowDirection.LengthSquared > 0)
{
this.screenStartPoint = this.screenEndPoint - this.ArrowDirection;
}
else
{
this.screenStartPoint = this.Transform(this.StartPoint);
}
var d = this.screenEndPoint - this.screenStartPoint;
d.Normalize();
var n = new ScreenVector(d.Y, -d.X);
var p1 = this.screenEndPoint - (d * this.HeadLength * this.StrokeThickness);
var p2 = p1 + (n * this.HeadWidth * this.StrokeThickness);
var p3 = p1 - (n * this.HeadWidth * this.StrokeThickness);
var p4 = p1 + (d * this.Veeness * this.StrokeThickness);
var clippingRectangle = this.GetClippingRect();
const double MinimumSegmentLength = 4;
var dashArray = this.LineStyle.GetDashArray();
rc.DrawClippedLine(
clippingRectangle,
new[] { this.screenStartPoint, p4 },
MinimumSegmentLength * MinimumSegmentLength,
this.GetSelectableColor(this.Color),
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
rc.DrawClippedPolygon(
clippingRectangle,
new[] { p3, this.screenEndPoint, p2, p4 },
MinimumSegmentLength * MinimumSegmentLength,
this.GetSelectableColor(this.Color),
OxyColors.Undefined);
if (!string.IsNullOrEmpty(this.Text))
{
var ha = this.TextHorizontalAlignment;
var va = this.TextVerticalAlignment;
if (!this.TextPosition.IsDefined())
{
// automatic position => use automatic alignment
ha = d.X < 0 ? HorizontalAlignment.Left : HorizontalAlignment.Right;
va = d.Y < 0 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
}
var textPoint = this.GetActualTextPosition(() => this.screenStartPoint);
rc.DrawClippedText(
clippingRectangle,
textPoint,
this.Text,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
this.TextRotation,
ha,
va);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="HitTestArguments"/> class.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="tolerance">The tolerance.</param>
public HitTestArguments(ScreenPoint point, double tolerance)
{
this.Point = point;
this.Tolerance = tolerance;
}
/// <summary>
/// Gets the point on the curve that is nearest the specified point.
/// </summary>
/// <param name="points">The point list.</param>
/// <param name="point">The point.</param>
/// <returns>A tracker hit result if a point was found.</returns>
/// <remarks>The Text property of the result will not be set, since the formatting depends on the various series.</remarks>
protected TrackerHitResult GetNearestInterpolatedPointInternal(List <DataPoint> points, ScreenPoint point)
{
if (this.XAxis == null || this.YAxis == null || points == null)
{
return(null);
}
var spn = default(ScreenPoint);
var dpn = default(DataPoint);
double index = -1;
double minimumDistance = double.MaxValue;
for (int i = 0; i + 1 < points.Count; i++)
{
var p1 = points[i];
var p2 = points[i + 1];
if (!this.IsValidPoint(p1) || !this.IsValidPoint(p2))
{
continue;
}
var sp1 = this.Transform(p1);
var sp2 = this.Transform(p2);
// Find the nearest point on the line segment.
var spl = ScreenPointHelper.FindPointOnLine(point, sp1, sp2);
if (ScreenPoint.IsUndefined(spl))
{
// P1 && P2 coincident
continue;
}
double l2 = (point - spl).LengthSquared;
if (l2 < minimumDistance)
{
double segmentLength = (sp2 - sp1).Length;
double u = segmentLength > 0 ? (spl - sp1).Length / segmentLength : 0;
dpn = new DataPoint(p1.X + (u * (p2.X - p1.X)), p1.Y + (u * (p2.Y - p1.Y)));
spn = spl;
minimumDistance = l2;
index = i + u;
}
}
if (minimumDistance < double.MaxValue)
{
var item = this.GetItem((int)Math.Round(index));
return(new TrackerHitResult
{
Series = this,
DataPoint = dpn,
Position = spn,
Item = item,
Index = index
});
}
return(null);
}
/// <summary>
/// Gets the point on the series that is nearest the specified point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">Interpolate the series if this flag is set to <c>true</c>.</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
if (this.XAxis == null || this.YAxis == null)
{
return(null);
}
if (interpolate)
{
return(null);
}
TrackerHitResult result = null;
// http://paulbourke.net/geometry/pointlineplane/
double minimumDistance = double.MaxValue;
var points = this.ActualPoints;
for (int i = 0; i < points.Count; i++)
{
var p1 = points[i];
var basePoint = new DataPoint(p1.X, this.Base);
var sp1 = this.Transform(p1);
var sp2 = this.Transform(basePoint);
var u = ScreenPointHelper.FindPositionOnLine(point, sp1, sp2);
if (double.IsNaN(u))
{
u = 1; // we are a tiny line, snap to the end
}
if (u < 0 || u > 1)
{
u = 1; // we are outside the line, snap to the end
}
var sp = sp1 + ((sp2 - sp1) * u);
double distance = (point - sp).LengthSquared;
if (distance < minimumDistance)
{
var item = this.GetItem(i);
result = new TrackerHitResult
{
Series = this,
DataPoint = new DataPoint(p1.X, p1.Y),
Position = new ScreenPoint(sp1.x, sp1.y),
Item = this.GetItem(i),
Index = i,
Text =
StringHelper.Format(
this.ActualCulture,
this.TrackerFormatString,
item,
this.Title,
this.XAxis.Title ?? XYAxisSeries.DefaultXAxisTitle,
this.XAxis.GetValue(p1.X),
this.YAxis.Title ?? XYAxisSeries.DefaultYAxisTitle,
this.YAxis.GetValue(p1.Y))
};
minimumDistance = distance;
}
}
return(result);
}
/// <summary>
/// Draws the text.
/// </summary>
/// <param name="p">The position.</param>
/// <param name="text">The text.</param>
/// <param name="fill">The fill color.</param>
/// <param name="fontFamily">The font family.</param>
/// <param name="fontSize">Size of the font.</param>
/// <param name="fontWeight">The font weight.</param>
/// <param name="rotate">The rotation angle.</param>
/// <param name="halign">The horizontal alignment.</param>
/// <param name="valign">The vertical alignment.</param>
/// <param name="maxSize">The maximum size of the text.</param>
public void DrawText(
ScreenPoint p,
string text,
OxyColor fill,
string fontFamily,
double fontSize,
double fontWeight,
double rotate,
OxyPlot.HorizontalAlignment halign,
OxyPlot.VerticalAlignment valign,
OxySize?maxSize)
{
var tb = new TextBlock {
Text = text, Foreground = new SolidColorBrush(fill.ToColor())
};
// tb.SetValue(TextOptions.TextHintingModeProperty, TextHintingMode.Animated);
if (fontFamily != null)
{
tb.FontFamily = new FontFamily(fontFamily);
}
if (fontSize > 0)
{
tb.FontSize = fontSize;
}
tb.FontWeight = GetFontWeight(fontWeight);
tb.Measure(new Size(1000, 1000));
var size = new Size(tb.ActualWidth, tb.ActualHeight);
if (maxSize != null)
{
if (size.Width > maxSize.Value.Width)
{
size.Width = maxSize.Value.Width;
}
if (size.Height > maxSize.Value.Height)
{
size.Height = maxSize.Value.Height;
}
tb.Clip = new RectangleGeometry {
Rect = new Rect(0, 0, size.Width, size.Height)
};
}
double dx = 0;
if (halign == OxyPlot.HorizontalAlignment.Center)
{
dx = -size.Width / 2;
}
if (halign == OxyPlot.HorizontalAlignment.Right)
{
dx = -size.Width;
}
double dy = 0;
if (valign == OxyPlot.VerticalAlignment.Middle)
{
dy = -size.Height / 2;
}
if (valign == OxyPlot.VerticalAlignment.Bottom)
{
dy = -size.Height;
}
var transform = new TransformGroup();
transform.Children.Add(new TranslateTransform {
X = (int)dx, Y = (int)dy
});
if (!rotate.Equals(0))
{
transform.Children.Add(new RotateTransform {
Angle = rotate
});
}
transform.Children.Add(new TranslateTransform {
X = (int)p.X, Y = (int)p.Y
});
tb.RenderTransform = transform;
this.ApplyTooltip(tb);
if (this.clip)
{
// add a clipping container that is not rotated
var c = new Canvas();
c.Children.Add(tb);
this.Add(c);
}
else
{
this.Add(tb);
}
}
/// <summary>
/// Gets the nearest point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">interpolate if set to <c>true</c> .</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
if (this.XAxis == null || this.YAxis == null)
{
return(null);
}
if (interpolate)
{
return(null);
}
var actualPoints = this.ActualPointsList;
if (actualPoints == null || actualPoints.Count == 0)
{
return(null);
}
TrackerHitResult result = null;
double minimumDistance = double.MaxValue;
int i = 0;
var xaxisTitle = this.XAxis.Title ?? DefaultXAxisTitle;
var yaxisTitle = this.YAxis.Title ?? DefaultYAxisTitle;
var colorAxisTitle = (this.ColorAxis != null ? ((Axis)this.ColorAxis).Title : null) ?? DefaultColorAxisTitle;
foreach (var p in actualPoints)
{
if (p.X < this.XAxis.ActualMinimum || p.X > this.XAxis.ActualMaximum || p.Y < this.YAxis.ActualMinimum || p.Y > this.YAxis.ActualMaximum)
{
i++;
continue;
}
var sp = this.XAxis.Transform(p.X, p.Y, this.YAxis);
double dx = sp.x - point.x;
double dy = sp.y - point.y;
double d2 = (dx * dx) + (dy * dy);
if (d2 < minimumDistance)
{
var item = this.GetItem(i) ?? p;
object zvalue = null;
if (!double.IsNaN(p.Value) && !double.IsInfinity(p.Value))
{
zvalue = p.Value;
}
result = new TrackerHitResult
{
Series = this,
DataPoint = new DataPoint(p.X, p.Y),
Position = sp,
Item = item,
Index = i,
Text =
StringHelper.Format(
this.ActualCulture,
this.TrackerFormatString,
item,
this.Title,
xaxisTitle,
this.XAxis.GetValue(p.X),
yaxisTitle,
this.YAxis.GetValue(p.Y),
colorAxisTitle,
zvalue),
};
minimumDistance = d2;
}
i++;
}
return(result);
}
/// <summary>
/// Converts a <see cref="ScreenPoint" /> to a pixel center aligned <see cref="PointF" />.
/// </summary>
/// <param name="p">The point to convert.</param>
/// <returns>The converted point.</returns>
public static PointF ConvertAliased(this ScreenPoint p)
{
return(new PointF(0.5f + (float)Math.Round(p.X), 0.5f + (float)Math.Round(p.Y)));
}
/// <summary>
/// Draws text.
/// </summary>
/// <param name="p">The position.</param>
/// <param name="text">The text.</param>
/// <param name="fill">The text color.</param>
/// <param name="fontFamily">The font family.</param>
/// <param name="fontSize">Size of the font (in device independent units, 1/96 inch).</param>
/// <param name="fontWeight">The font weight.</param>
/// <param name="rotate">The rotation angle.</param>
/// <param name="halign">The horizontal alignment.</param>
/// <param name="valign">The vertical alignment.</param>
/// <param name="maxSize">The maximum size of the text (in device independent units, 1/96 inch).</param>
public void DrawText(
ScreenPoint p,
string text,
OxyColor fill,
string fontFamily,
double fontSize,
double fontWeight,
double rotate,
HorizontalAlignment halign,
VerticalAlignment valign,
OxySize?maxSize)
{
var tb = this.CreateAndAdd <TextBlock>();
tb.Text = text;
tb.Foreground = this.GetCachedBrush(fill);
if (fontFamily != null)
{
tb.FontFamily = this.GetCachedFontFamily(fontFamily);
}
if (fontSize > 0)
{
tb.FontSize = fontSize;
}
if (fontWeight > 0)
{
tb.FontWeight = GetFontWeight(fontWeight);
}
TextOptions.SetTextFormattingMode(tb, this.TextFormattingMode);
double dx = 0;
double dy = 0;
if (maxSize != null || halign != HorizontalAlignment.Left || valign != VerticalAlignment.Top)
{
tb.Measure(new Size(1000, 1000));
var size = tb.DesiredSize;
if (maxSize != null)
{
if (size.Width > maxSize.Value.Width + 1e-3)
{
size.Width = Math.Max(maxSize.Value.Width, 0);
}
if (size.Height > maxSize.Value.Height + 1e-3)
{
size.Height = Math.Max(maxSize.Value.Height, 0);
}
tb.Width = size.Width;
tb.Height = size.Height;
}
if (halign == HorizontalAlignment.Center)
{
dx = -size.Width / 2;
}
if (halign == HorizontalAlignment.Right)
{
dx = -size.Width;
}
if (valign == VerticalAlignment.Middle)
{
dy = -size.Height / 2;
}
if (valign == VerticalAlignment.Bottom)
{
dy = -size.Height;
}
}
var transform = new TransformGroup();
transform.Children.Add(new TranslateTransform(dx, dy));
if (Math.Abs(rotate) > double.Epsilon)
{
transform.Children.Add(new RotateTransform(rotate));
}
transform.Children.Add(new TranslateTransform(p.X, p.Y));
tb.RenderTransform = transform;
if (tb.Clip != null)
{
tb.Clip.Transform = tb.RenderTransform.Inverse as Transform;
}
#if !NET35
tb.SetValue(RenderOptions.ClearTypeHintProperty, ClearTypeHint.Enabled);
#endif
}
/// <summary>
/// Renders the Series on the specified rendering context.
/// </summary>
/// <param name="rc">
/// The rendering context.
/// </param>
/// <param name="model">
/// The model.
/// </param>
public override void Render(IRenderContext rc, PlotModel model)
{
this.ActualMinimumBarRectangles = new List<OxyRect>();
this.ActualMaximumBarRectangles = new List<OxyRect>();
if (this.ValidItems.Count == 0)
{
return;
}
var clippingRect = this.GetClippingRect();
var categoryAxis = this.GetCategoryAxis();
var actualBarWidth = this.GetActualBarWidth();
for (var i = 0; i < this.ValidItems.Count; i++)
{
var item = this.ValidItems[i];
var categoryIndex = item.GetCategoryIndex(i);
var baseValue = double.IsNaN(item.BaseValue) ? this.BaseValue : item.BaseValue;
var p0 = this.Transform(item.Minimum, categoryIndex - 0.5 + categoryAxis.BarOffset[categoryIndex]);
var p1 = this.Transform(
item.Maximum, categoryIndex - 0.5 + categoryAxis.BarOffset[categoryIndex] + actualBarWidth);
var p2 = this.Transform(baseValue, categoryIndex - 0.5 + categoryAxis.BarOffset[categoryIndex]);
p2.X = (int)p2.X;
var minimumRectangle = OxyRect.Create(p0.X, p0.Y, p2.X, p1.Y);
var maximumRectangle = OxyRect.Create(p2.X, p0.Y, p1.X, p1.Y);
this.ActualMinimumBarRectangles.Add(minimumRectangle);
this.ActualMaximumBarRectangles.Add(maximumRectangle);
rc.DrawClippedRectangleAsPolygon(
minimumRectangle,
clippingRect,
item.MinimumColor ?? this.ActualMinimumFillColor,
this.StrokeColor,
this.StrokeThickness);
rc.DrawClippedRectangleAsPolygon(
maximumRectangle,
clippingRect,
item.MaximumColor ?? this.ActualMaximumFillColor,
this.StrokeColor,
this.StrokeThickness);
if (this.MinimumLabelFormatString != null)
{
var s = StringHelper.Format(
this.ActualCulture,
this.MinimumLabelFormatString,
this.GetItem(this.ValidItemsIndexInversion[i]),
item.Minimum);
var pt = new ScreenPoint(
minimumRectangle.Left - this.LabelMargin, (minimumRectangle.Top + minimumRectangle.Bottom) / 2);
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Right,
VerticalAlignment.Middle);
}
if (this.MaximumLabelFormatString != null)
{
var s = StringHelper.Format(
this.ActualCulture,
this.MaximumLabelFormatString,
this.GetItem(this.ValidItemsIndexInversion[i]),
item.Maximum);
var pt = new ScreenPoint(
maximumRectangle.Right + this.LabelMargin, (maximumRectangle.Top + maximumRectangle.Bottom) / 2);
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Left,
VerticalAlignment.Middle);
}
}
}
/// <summary>
/// Converts a <see cref="ScreenPoint" /> to a <see cref="Point" />.
/// </summary>
/// <param name="pt">The screen point.</param>
/// <param name="aliased">use pixel alignment conversion if set to <c>true</c>.</param>
/// <returns>A <see cref="Point" />.</returns>
private Point ToPoint(ScreenPoint pt, bool aliased)
{
return(aliased ? this.ToPixelAlignedPoint(pt) : this.ToPoint(pt));
}
/// <summary>
/// Converts a <see cref="ScreenPoint" /> to a <see cref="PointF" />.
/// </summary>
/// <param name="p">The point to convert.</param>
/// <returns>The converted point.</returns>
public static PointF Convert(this ScreenPoint p)
{
return(new PointF((float)p.X, (float)p.Y));
}
/// <summary>
/// Converts a <see cref="ScreenPoint" /> to a <see cref="Point" />.
/// </summary>
/// <param name="pt">The screen point.</param>
/// <returns>A <see cref="Point" />.</returns>
private Point ToPoint(ScreenPoint pt)
{
return(new Point(pt.X, pt.Y));
}
public override void DrawText (ScreenPoint p, string text, OxyColor fill, string fontFamily, double fontSize, double fontWeight, double rotate, HorizontalTextAlign halign, VerticalTextAlign valign, OxySize? maxSize)
{
//This method needs work not 100% around vertical alignment.
if(string.IsNullOrEmpty(text))
{
return;
}
fontFamily = GetDefaultFont(fontFamily);
if (fontWeight >= 700)
{
//fs = FontStyle.Bold;
}
//var textSize = MeasureText(text, fontFamily, fontSize, fontWeight);
if (maxSize != null)
{
// if (size.Width > maxSize.Value.Width)
// {
// size.Width = (float)maxSize.Value.Width;
// }
//
// if (size.Height > maxSize.Value.Height)
// {
// size.Height = (float)maxSize.Value.Height;
// }
}
gctx.SaveState();
gctx.SelectFont(fontFamily, (float)fontSize, CGTextEncoding.MacRoman);
ToColor(fill).SetFill();
gctx.SetTextDrawingMode(CGTextDrawingMode.Fill);
var tfont = UIFont.FromName (fontFamily,(float)fontSize);
NSString nsstr = new NSString(text);
SizeF sz = nsstr.StringSize(tfont);
float y = (float)(p.Y);
float x = (float)(p.X);
switch(halign)
{
case HorizontalTextAlign.Left:
x = (float)(p.X);
break;
case HorizontalTextAlign.Right:
x = (float)(p.X - sz.Width);
break;
case HorizontalTextAlign.Center:
x = (float)(p.X - (sz.Width / 2));
break;
}
switch(valign)
{
case VerticalTextAlign.Bottom:
y -= (float)fontSize;
break;
case VerticalTextAlign.Top:
// y += (float)fontSize;
break;
case VerticalTextAlign.Middle:
y -= (float)(fontSize / 2);
break;
}
RectangleF rect = new RectangleF(x,y,sz.Width,sz.Height);
nsstr.DrawString( rect, tfont);
gctx.RestoreState();
//Console.WriteLine("X:{0:###} Y:{1:###} HA:{2}:{3:###} VA:{4}:{5:###} TW:{6:###} - {7}", p.X, p.Y, halign, x, valign, y, textSize.Width, text);
}
private static bool ShouldTrackerOpen(TrackerHitResult result, ScreenPoint point, double firesDistance) => result?.Position.DistanceTo(point) < firesDistance;
/// <summary>
/// Renders the LineSeries on the specified rendering context.
/// </summary>
/// <param name="rc">The rendering context.</param>
/// <param name="model">The owner plot model.</param>
public override void Render(IRenderContext rc, PlotModel model)
{
if (this.ActualPoints.Count == 0)
{
return;
}
this.VerifyAxes();
double minDistSquared = this.MinimumSegmentLength * this.MinimumSegmentLength;
var clippingRect = this.GetClippingRect();
// Transform all points to screen coordinates
// Render the line when invalid points occur
var dashArray = this.ActualDashArray;
var actualColor = this.GetSelectableColor(this.ActualColor);
var points = new ScreenPoint[2];
var markerPoints = this.MarkerType != MarkerType.None ? new List<ScreenPoint>(this.ActualPoints.Count) : null;
foreach (var point in this.ActualPoints)
{
if (!this.IsValidPoint(point))
{
continue;
}
points[0] = this.Transform(point.X, this.Base);
points[1] = this.Transform(point.X, point.Y);
if (this.StrokeThickness > 0 && this.ActualLineStyle != LineStyle.None)
{
rc.DrawClippedLine(
clippingRect,
points,
minDistSquared,
actualColor,
this.StrokeThickness,
dashArray,
this.LineJoin,
false);
}
if (markerPoints != null)
{
markerPoints.Add(points[1]);
}
}
if (this.MarkerType != MarkerType.None)
{
rc.DrawMarkers(
clippingRect,
markerPoints,
this.MarkerType,
this.MarkerOutline,
new[] { this.MarkerSize },
this.MarkerFill,
this.MarkerStroke,
this.MarkerStrokeThickness);
}
}
/// <summary>
/// Update the position and border of the tracker.
/// </summary>
private void UpdatePositionAndBorder()
{
if (this.contentContainer == null)
{
return;
}
Canvas.SetLeft(this.contentContainer, this.Position.X);
Canvas.SetTop(this.contentContainer, this.Position.Y);
FrameworkElement parent = this;
while (!(parent is Canvas) && parent != null)
{
parent = VisualTreeHelper.GetParent(parent) as FrameworkElement;
}
if (parent == null)
{
return;
}
// throw new InvalidOperationException("The TrackerControl must have a Canvas parent.");
double canvasWidth = parent.ActualWidth;
double canvasHeight = parent.ActualHeight;
this.content.Measure(new Size(canvasWidth, canvasHeight));
this.content.Arrange(new Rect(0, 0, this.content.DesiredSize.Width, this.content.DesiredSize.Height));
double contentWidth = this.content.DesiredSize.Width;
double contentHeight = this.content.DesiredSize.Height;
// Minimum allowed margins around the tracker
const double MarginLimit = 10;
var ha = HorizontalAlignment.Center;
if (this.CanCenterHorizontally)
{
if (this.Position.X - (contentWidth / 2) < MarginLimit)
{
ha = HorizontalAlignment.Left;
}
if (this.Position.X + (contentWidth / 2) > canvasWidth - MarginLimit)
{
ha = HorizontalAlignment.Right;
}
}
else
{
ha = this.Position.X < canvasWidth / 2 ? HorizontalAlignment.Left : HorizontalAlignment.Right;
}
var va = VerticalAlignment.Center;
if (this.CanCenterVertically)
{
if (this.Position.Y - (contentHeight / 2) < MarginLimit)
{
va = VerticalAlignment.Top;
}
if (ha == HorizontalAlignment.Center)
{
va = VerticalAlignment.Bottom;
if (this.Position.Y - contentHeight < MarginLimit)
{
va = VerticalAlignment.Top;
}
}
if (va == VerticalAlignment.Center && this.Position.Y + (contentHeight / 2) > canvasHeight - MarginLimit)
{
va = VerticalAlignment.Bottom;
}
if (va == VerticalAlignment.Top && this.Position.Y + contentHeight > canvasHeight - MarginLimit)
{
va = VerticalAlignment.Bottom;
}
}
else
{
va = this.Position.Y < canvasHeight / 2 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
}
double dx = ha == HorizontalAlignment.Center ? -0.5 : ha == HorizontalAlignment.Left ? 0 : -1;
double dy = va == VerticalAlignment.Center ? -0.5 : va == VerticalAlignment.Top ? 0 : -1;
Thickness margin;
this.path.Data = this.ShowPointer
? this.CreatePointerBorderGeometry(ha, va, contentWidth, contentHeight, out margin)
: this.CreateBorderGeometry(ha, va, contentWidth, contentHeight, out margin);
this.content.Margin = margin;
this.contentContainer.Measure(new Size(canvasWidth, canvasHeight));
Size contentSize = this.contentContainer.DesiredSize;
this.contentContainer.RenderTransform = new TranslateTransform
{
X = dx * contentSize.Width, Y = dy * contentSize.Height
};
#if WPF
ScreenPoint pos = this.Position;
#endif
#if SILVERLIGHT || METRO
Point pos = this.Position.ToPoint(true);
#endif
if (this.horizontalLine != null)
{
if (this.LineExtents.Width > 0)
{
this.horizontalLine.X1 = this.LineExtents.Left;
this.horizontalLine.X2 = this.LineExtents.Right;
}
else
{
this.horizontalLine.X1 = 0;
this.horizontalLine.X2 = canvasWidth;
}
this.horizontalLine.Y1 = pos.Y;
this.horizontalLine.Y2 = pos.Y;
}
if (this.verticalLine != null)
{
if (this.LineExtents.Width > 0)
{
this.verticalLine.Y1 = this.LineExtents.Top;
this.verticalLine.Y2 = this.LineExtents.Bottom;
}
else
{
this.verticalLine.Y1 = 0;
this.verticalLine.Y2 = canvasHeight;
}
this.verticalLine.X1 = pos.X;
this.verticalLine.X2 = pos.X;
}
}
/// <summary>
/// Gets the point in the dataset that is nearest the specified point.
/// </summary>
/// <param name="point">The point.</param>
/// <param name="interpolate">The interpolate.</param>
/// <returns>A TrackerHitResult for the current hit.</returns>
public override TrackerHitResult GetNearestPoint(ScreenPoint point, bool interpolate)
{
for (int i = 0; i < this.ActualBarRectangles.Count; i++)
{
var r = this.ActualBarRectangles[i];
if (r.Contains(point))
{
var item = (IntervalBarItem)this.GetItem(this.ValidItemsIndexInversion[i]);
var categoryIndex = item.GetCategoryIndex(i);
double value = (this.ValidItems[i].Start + this.ValidItems[i].End) / 2;
var dp = new DataPoint(categoryIndex, value);
var text = this.Format(
this.TrackerFormatString,
item,
this.Items[i].Start,
this.Items[i].End,
this.Items[i].Title);
return new TrackerHitResult(this, dp, point, item, i, text);
}
}
return null;
}
/// <summary>
/// Draws the text.
/// </summary>
/// <param name="p">The p.</param>
/// <param name="text">The text.</param>
/// <param name="c">The c.</param>
/// <param name="fontFamily">The font family.</param>
/// <param name="fontSize">Size of the font.</param>
/// <param name="fontWeight">The font weight.</param>
/// <param name="rotate">The rotate.</param>
/// <param name="halign">The horizontal alignment.</param>
/// <param name="valign">The vertical alignment.</param>
/// <param name="maxSize">Size of the max.</param>
public override void DrawText(
ScreenPoint p,
string text,
OxyColor c,
string fontFamily,
double fontSize,
double fontWeight,
double rotate,
HorizontalAlignment halign,
VerticalAlignment valign,
OxySize?maxSize)
{
if (string.IsNullOrEmpty(text))
{
return;
}
var lines = Regex.Split(text, "\r\n");
var textSize = this.MeasureText(text, fontFamily, fontSize, fontWeight);
var lineHeight = textSize.Height / lines.Length;
var lineOffset = new ScreenVector(-Math.Sin(rotate / 180.0 * Math.PI) * lineHeight, +Math.Cos(rotate / 180.0 * Math.PI) * lineHeight);
if (this.UseVerticalTextAlignmentWorkaround)
{
// offset the position, and set the valign to neutral value of `Bottom`
double offsetRatio = valign == VerticalAlignment.Bottom ? (1.0 - lines.Length) : valign == VerticalAlignment.Top ? 1.0 : (1.0 - (lines.Length / 2.0));
valign = VerticalAlignment.Bottom;
p += lineOffset * offsetRatio;
foreach (var line in lines)
{
var size = this.MeasureText(line, fontFamily, fontSize, fontWeight);
this.WriteText(p, line, c, fontFamily, fontSize, fontWeight, rotate, halign, valign);
p += lineOffset;
}
}
else
{
if (valign == VerticalAlignment.Bottom)
{
for (var i = lines.Length - 1; i >= 0; i--)
{
var line = lines[i];
_ = this.MeasureText(line, fontFamily, fontSize, fontWeight);
this.WriteText(p, line, c, fontFamily, fontSize, fontWeight, rotate, halign, valign);
p -= lineOffset;
}
}
else
{
foreach (var line in lines)
{
var size = this.MeasureText(line, fontFamily, fontSize, fontWeight);
this.WriteText(p, line, c, fontFamily, fontSize, fontWeight, rotate, halign, valign);
p += lineOffset;
}
}
}
}
public void DrawText(ScreenPoint p, string text, OxyColor fill, string fontFamily, double fontSize,
double fontWeight, double rotate, HorizontalAlignment halign, VerticalTextAlign valign)
{
var tb = new TextBlock
{
Text = text,
Foreground = new SolidColorBrush(fill.ToColor())
};
if (fontFamily != null)
tb.FontFamily = new FontFamily(fontFamily);
if (fontSize > 0)
tb.FontSize = fontSize;
if (fontWeight > 0)
tb.FontWeight = FontWeight.FromOpenTypeWeight((int)fontWeight);
tb.Measure(new Size(1000, 1000));
double dx = 0;
if (halign == HorizontalAlignment.Center)
dx = -tb.DesiredSize.Width / 2;
if (halign == HorizontalAlignment.Right)
dx = -tb.DesiredSize.Width;
double dy = 0;
if (valign == VerticalTextAlign.Middle)
dy = -tb.DesiredSize.Height / 2;
if (valign == VerticalTextAlign.Bottom)
dy = -tb.DesiredSize.Height;
var transform = new TransformGroup();
transform.Children.Add(new TranslateTransform(dx, dy));
if (rotate != 0)
transform.Children.Add(new RotateTransform(rotate));
transform.Children.Add(new TranslateTransform(p.X, p.Y));
tb.RenderTransform = transform;
tb.SetValue(RenderOptions.ClearTypeHintProperty, ClearTypeHint.Enabled);
Add(tb);
}
/// <summary>
/// Writes text.
/// </summary>
/// <param name="position">The position.</param>
/// <param name="text">The text.</param>
/// <param name="fill">The text color.</param>
/// <param name="fontFamily">The font family.</param>
/// <param name="fontSize">The font size (in user units).</param>
/// <param name="fontWeight">The font weight.</param>
/// <param name="rotate">The rotation angle.</param>
/// <param name="halign">The horizontal alignment.</param>
/// <param name="valign">The vertical alignment.</param>
public void WriteText(
ScreenPoint position,
string text,
OxyColor fill,
string fontFamily = null,
double fontSize = 10,
double fontWeight = FontWeights.Normal,
double rotate = 0,
HorizontalAlignment halign = HorizontalAlignment.Left,
VerticalAlignment valign = VerticalAlignment.Top)
{
// http://www.w3.org/TR/SVG/text.html
this.WriteStartElement("text");
// WriteAttributeString("x", position.X);
// WriteAttributeString("y", position.Y);
string baselineAlignment = "hanging";
if (valign == VerticalAlignment.Middle)
{
baselineAlignment = "middle";
}
if (valign == VerticalAlignment.Bottom)
{
baselineAlignment = "baseline";
}
this.WriteAttributeString("dominant-baseline", baselineAlignment);
string textAnchor = "start";
if (halign == HorizontalAlignment.Center)
{
textAnchor = "middle";
}
if (halign == HorizontalAlignment.Right)
{
textAnchor = "end";
}
this.WriteAttributeString("text-anchor", textAnchor);
string fmt = "translate({0:" + this.NumberFormat + "},{1:" + this.NumberFormat + "})";
string transform = string.Format(CultureInfo.InvariantCulture, fmt, position.X, position.Y);
if (Math.Abs(rotate) > 0)
{
transform += string.Format(CultureInfo.InvariantCulture, " rotate({0})", rotate);
}
this.WriteAttributeString("transform", transform);
if (fontFamily != null)
{
this.WriteAttributeString("font-family", fontFamily);
}
if (fontSize > 0)
{
this.WriteAttributeString("font-size", fontSize);
}
if (fontWeight > 0)
{
this.WriteAttributeString("font-weight", fontWeight);
}
if (fill.IsInvisible())
{
this.WriteAttributeString("fill", "none");
}
else
{
this.WriteAttributeString("fill", this.ColorToString(fill));
if (fill.A != 0xFF)
{
this.WriteAttributeString("fill-opacity", fill.A / 255.0);
}
}
this.WriteClipPathAttribute();
// WriteAttributeString("style", style);
this.WriteString(text);
this.WriteEndElement();
}
/// <summary>
/// Initializes a new instance of the <see cref="ManipulationEventArgs"/> class.
/// </summary>
/// <param name="currentPosition">
/// The current position.
/// </param>
public ManipulationEventArgs(ScreenPoint currentPosition)
{
this.CurrentPosition = currentPosition;
}
/// <summary>
/// Renders the point labels.
/// </summary>
/// <param name="rc">The render context.</param>
/// <param name="clippingRect">The clipping rectangle.</param>
protected void RenderPointLabels(IRenderContext rc, OxyRect clippingRect)
{
var actualPoints = this.ActualPointsList;
if (actualPoints == null || actualPoints.Count == 0)
{
return;
}
// TODO: share code with LineSeries
int index = -1;
foreach (var point in actualPoints)
{
index++;
var dataPoint = new DataPoint(point.X, point.Y);
if (!this.IsValidPoint(dataPoint))
{
continue;
}
var pt = this.Transform(dataPoint) + new ScreenVector(0, -this.LabelMargin);
if (!clippingRect.Contains(pt))
{
continue;
}
var item = this.GetItem(index);
var s = StringHelper.Format(this.ActualCulture, this.LabelFormatString, item, point.X, point.Y);
#if SUPPORTLABELPLACEMENT
switch (this.LabelPlacement)
{
case LabelPlacement.Inside:
pt = new ScreenPoint(rect.Right - this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Right;
break;
case LabelPlacement.Middle:
pt = new ScreenPoint((rect.Left + rect.Right) / 2, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Center;
break;
case LabelPlacement.Base:
pt = new ScreenPoint(rect.Left + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
default: // Outside
pt = new ScreenPoint(rect.Right + this.LabelMargin, (rect.Top + rect.Bottom) / 2);
ha = HorizontalAlignment.Left;
break;
}
#endif
rc.DrawClippedText(
clippingRect,
pt,
s,
this.ActualTextColor,
this.ActualFont,
this.ActualFontSize,
this.ActualFontWeight,
0,
HorizontalAlignment.Center,
VerticalAlignment.Bottom);
}
}
