/// <summary>
/// Draw Ellipse around the Intersection of
/// Horizontal and Vertical markers
/// </summary>
/// <param name="pnt"></param>
ChartPanelObject CreateEllipse(Point pnt)
{
Border sp = new Border();
sp.Height = 50;
sp.Width = 50;
var obj = new ChartPanelObject();
Ellipse el = new Ellipse();
el.Height = 50;
el.Width = 50;
el.StrokeThickness = 2;
el.Stroke = new SolidColorBrush(Colors.Red);
sp.Child = el;
obj.DataPoint = new Point(ellipseDataPoint.X, ellipseDataPoint.Y);
obj.Content = sp;
return(obj);
}
ChartPanelObject CreateMarker(bool isHorizontal)
{
var obj = new ChartPanelObject();
var bdr = new Border()
{
BorderBrush = Background = new SolidColorBrush(Color.FromArgb(150, 255, 2, 2)),
Padding = new Thickness(2),
};
var tb = new TextBlock();
var bind = new Binding();
bind.Source = obj;
if (isHorizontal)
{
bdr.BorderThickness = new Thickness(0, 4, 0, 0);
bdr.Margin = new Thickness(0, -1, 0, 0);
obj.HorizontalContentAlignment = HorizontalAlignment.Stretch;
bind.StringFormat = "y={0:#.#}";
bind.Path = new PropertyPath("DataPoint.Y");
obj.DataPoint = new Point(double.NaN, 0.5);
}
else
{
bdr.BorderThickness = new Thickness(4, 0, 0, 0);
bdr.Margin = new Thickness(-1, 0, 0, 0);
obj.VerticalContentAlignment = VerticalAlignment.Stretch;
bind.StringFormat = "x={0:#.#}";
bind.Path = new PropertyPath("DataPoint.X");
obj.DataPoint = new Point(0.5, double.NaN);
}
tb.SetBinding(TextBlock.TextProperty, bind);
bdr.Child = tb;
bdr.IsHitTestVisible = false;
obj.Content = bdr;
return(obj);
}
ChartPanelObject CreateMarker(bool isHorizontal)
{
var obj = new ChartPanelObject();
var bdr = new Border()
{
BorderBrush = Background = new SolidColorBrush(Color.FromArgb(150, 255, 2, 2)),
Padding = new Thickness(2),
};
var tb = new TextBlock();
var bind = new Binding();
bind.Source = obj;
if (isHorizontal)
{
bdr.BorderThickness = new Thickness(0, 4, 0, 0);
bdr.Margin = new Thickness(0, -1, 0, 0);
obj.HorizontalContentAlignment = HorizontalAlignment.Stretch;
bind.StringFormat = "y={0:#.#}";
bind.Path = new PropertyPath("DataPoint.Y");
obj.DataPoint = new Point(double.NaN, 0.5);
}
else
{
bdr.BorderThickness = new Thickness(4, 0, 0, 0);
bdr.Margin = new Thickness(-1, 0, 0, 0);
obj.VerticalContentAlignment = VerticalAlignment.Stretch;
bind.StringFormat = "x={0:#.#}";
bind.Path = new PropertyPath("DataPoint.X");
obj.DataPoint = new Point(0.5, double.NaN);
}
tb.SetBinding(TextBlock.TextProperty, bind);
bdr.Child = tb;
bdr.IsHitTestVisible = false;
obj.Content = bdr;
return obj;
}
ChartPanelObject CreateMarker(bool isHorizontal, Point pnt)
{
var obj = new ChartPanelObject();
var bdr = new Border()
{
BorderBrush = Background = new SolidColorBrush(Colors.Red),
Padding = new Thickness(2),
};
if (isHorizontal)
{
bdr.BorderThickness = new Thickness(0, 2, 0, 0);
bdr.Margin = new Thickness(0, -1, 0, 0);
obj.HorizontalContentAlignment = HorizontalAlignment.Stretch;
if (pnt.X == 0 && pnt.Y == 0)
{
obj.DataPoint = new Point(double.NaN, 0.5);
}
else
{
//Data Point where Mouse cursor is present
Point dpt = chart.View.PointToData(pnt);
///Markers are created based on the Horizontal movement
///of mouse cursor. We have to track whether the mouse
///cursor moved towards left or right from the last position.
///For this we need to determine the two DataPoints plotted
///between which the current mouse position is placed.
double val;
// Gets the index of the nearest data point
int ptIndex = chart.View.DataIndexFromPoint(pnt, 0, MeasureOption.X, out val);
// Use the above index to calculate the Coordinates of that nearest Data Point
Point closeScreenPoint = chart.View.DataIndexToPoint(0, ptIndex);
// Get the location of the next data point depending on whether mouse was
// was moved towards left or right
Point awayScreenPoint;
if (pnt.X > closeScreenPoint.X)
{
awayScreenPoint = chart.View.DataIndexToPoint(0, ptIndex + 1);
}
else
{
awayScreenPoint = chart.View.DataIndexToPoint(0, ptIndex - 1);
}
//Get coordinates where Vertical marker will intersect the chart line
double crossY = GetY(closeScreenPoint, awayScreenPoint, pnt);
//Get DataPoint for the above intersecting coordinates
Point closeDataPoint = chart.View.PointToData(new Point(pnt.X, crossY));
// set the DataPoint as the Attached data source for the Horizontal marker
obj.DataPoint = new Point(double.NaN, closeDataPoint.Y);
ellipseDataPoint.Y = closeDataPoint.Y;
// ellipseDataPoint.Y = obj.DataPoint.Y;
}
}
else
{
bdr.BorderThickness = new Thickness(2, 0, 0, 0);
bdr.Margin = new Thickness(-1, 0, 0, 0);
obj.VerticalContentAlignment = VerticalAlignment.Stretch;
Point dpt = chart.View.PointToData(pnt);
obj.DataPoint = new Point(dpt.X, double.NaN);
ellipseDataPoint.X = dpt.X;
}
bdr.IsHitTestVisible = false;
obj.Content = bdr;
return(obj);
}
public MouseMarker()
{
InitializeComponent();
SampleData.CreateData(chart);
chart.ChartType = ChartType.LineSymbols;
var pnl = new ChartPanel();
var obj = new ChartPanelObject()
{
HorizontalAlignment = HorizontalAlignment.Right,
VerticalAlignment = VerticalAlignment.Bottom
};
var bdr = new Border()
{
Background = new SolidColorBrush(Colors.Green)
{
Opacity = 0.4
},
BorderBrush = new SolidColorBrush(Colors.Green),
BorderThickness = new Thickness(1, 1, 3, 3),
CornerRadius = new CornerRadius(6, 6, 0, 6),
Padding = new Thickness(3)
};
//bdr.Padding = new Thickness(16, 16, 0, 0);
var sp = new StackPanel();
var tb1 = new TextBlock();
var bind1 = new Binding();
bind1.Source = obj;
bind1.StringFormat = "x={0:#.##}";
bind1.Path = new PropertyPath("DataPoint.X");
tb1.SetBinding(TextBlock.TextProperty, bind1);
var tb2 = new TextBlock();
var bind2 = new Binding();
bind2.Source = obj;
bind2.StringFormat = "y={0:#.##}";
bind2.Path = new PropertyPath("DataPoint.Y");
tb2.SetBinding(TextBlock.TextProperty, bind2);
sp.Children.Add(tb1);
sp.Children.Add(tb2);
bdr.Child = sp;
obj.Content = bdr;
obj.DataPoint = new Point();
obj.Action = ChartPanelAction.MouseMove;
pnl.Children.Add(obj);
chart.View.Layers.Add(pnl);
cbAttach.ItemsSource = Utils.GetEnumValues(typeof(ChartPanelAttach));
cbAttach.SelectedIndex = 0;
cbAttach.SelectionChanged += (s, e) =>
{
obj.Attach =
(ChartPanelAttach)Enum.Parse(typeof(ChartPanelAttach), cbAttach.SelectedValue.ToString(), true);
};
}
public MouseMarker()
{
InitializeComponent();
SampleData.CreateData(chart);
chart.ChartType = ChartType.LineSymbols;
var pnl = new ChartPanel();
var obj = new ChartPanelObject()
{
HorizontalAlignment = HorizontalAlignment.Right,
VerticalAlignment = VerticalAlignment.Bottom
};
var bdr = new Border()
{
Background = new SolidColorBrush(Colors.Green) { Opacity = 0.4 },
BorderBrush = new SolidColorBrush(Colors.Green),
BorderThickness = new Thickness(1, 1, 3, 3),
CornerRadius = new CornerRadius(6, 6, 0, 6),
Padding = new Thickness(3)
};
//bdr.Padding = new Thickness(16, 16, 0, 0);
var sp = new StackPanel();
var tb1 = new TextBlock();
var bind1 = new Binding();
bind1.Source = obj;
bind1.StringFormat = "x={0:#.##}";
bind1.Path = new PropertyPath("DataPoint.X");
tb1.SetBinding(TextBlock.TextProperty, bind1);
var tb2 = new TextBlock();
var bind2 = new Binding();
bind2.Source = obj;
bind2.StringFormat = "y={0:#.##}";
bind2.Path = new PropertyPath("DataPoint.Y");
tb2.SetBinding(TextBlock.TextProperty, bind2);
sp.Children.Add(tb1);
sp.Children.Add(tb2);
bdr.Child = sp;
obj.Content = bdr;
obj.DataPoint = new Point();
obj.Action = ChartPanelAction.MouseMove;
pnl.Children.Add(obj);
chart.View.Layers.Add(pnl);
cbAttach.ItemsSource = Utils.GetEnumValues(typeof(ChartPanelAttach));
cbAttach.SelectedIndex = 0;
cbAttach.SelectionChanged += (s, e) =>
{
obj.Attach =
(ChartPanelAttach)Enum.Parse(typeof(ChartPanelAttach), cbAttach.SelectedValue.ToString(), true);
};
}
private void handleDraw()
{
if (c1Chart.Data.Children.Count > 0)
{
clearMajorGrid();
cp.Children.Clear();
var obj = new ChartPanelObject();
Size stringSize = Hammergo.Utility.Helper.MeasureTextSize("1983", c1Chart.FontFamily, c1Chart.FontStyle, c1Chart.FontWeight, c1Chart.FontStretch, c1Chart.FontSize);
double stringWidth = stringSize.Width;
//计算坐标
calcAxis();
var rect = c1Chart.View.AxisX.GetAxisRect();
Canvas canvas = new Canvas();
canvas.Width = rect.Width;
canvas.Height = rect.Height;
//Canvas.SetLeft(canvas, 0);
////矩形对象相对于父容器对象Canvas的位置，左边距、上边距
//Canvas.SetTop(canvas, 0);
obj.Content = canvas;
Rectangle rectangle = new Rectangle();//矩形对象
//属性设置，填充颜色、边粗细、边颜色、宽、高等
rectangle.StrokeThickness = c1Chart.View.AxisX.AxisLine.StrokeThickness;
rectangle.Stroke = c1Chart.View.AxisX.AxisLine.Stroke;
rectangle.Width = rect.Width + 2 * c1Chart.View.AxisY.AxisLine.StrokeThickness;
rectangle.Height = rect.Height;
//矩形对象相对于父容器对象Canvas的位置，左边距、上边距
Canvas.SetLeft(rectangle, -1);
Canvas.SetTop(rectangle, 0);
canvas.Children.Add(rectangle);
//draw line
for (int i = 0; i < cors.GetLength(0); i++)
{
//第一个和最后一个竖线不画
if (i > 0 && i < cors.GetLength(0) - 1)
{
Line line = new Line();
line.Stroke = c1Chart.View.AxisX.AxisLine.Stroke;
line.StrokeThickness = c1Chart.View.AxisX.AxisLine.StrokeThickness;
//相对于canvas的坐标
line.X1 = cors[i, 0] - rect.Left;
line.Y1 = 0;
line.X2 = line.X1;
line.Y2 = line.Y1 + rect.Height;
//Canvas.SetLeft(line, 0);
//Canvas.SetTop(line, 0);
canvas.Children.Add(line);
Line dashLine = new Line();
dashLine.Stroke = Brushes.Gray;
dashLine.StrokeThickness = 1;
dashLine.StrokeDashArray = new DoubleCollection(new double[] { 2, 2 });
dashLine.X1 = line.X1;
dashLine.Y1 = line.Y1;
dashLine.X2 = line.X2;
dashLine.Y2 = -c1Chart.View.AxisY.GetAxisRect().Height;
canvas.Children.Add(dashLine);
}
//显示年份
double distance = cors[i, 1] - cors[i, 0];
if (distance >= stringWidth)
{
//相对于canvas的坐标系
double startXCor = cors[i, 0] + (distance - stringWidth) / 2.0f - rect.Left;
double startYCor = (rect.Height - stringSize.Height) / 2.0f;
TextBlock tb = new TextBlock();
tb.Text = (minYear + i).ToString();
Canvas.SetTop(tb, startYCor);
Canvas.SetLeft(tb, startXCor);
canvas.Children.Add(tb);
//ghs.DrawString((minYear + i).ToString(), smallFont, Brushes.Black, new PointF(startXCor, startYCor));
}
}
obj.Action = ChartPanelAction.None;
cp.Children.Add(obj);
if (c1Chart.View.Layers.Contains(cp) == false)
{
c1Chart.View.Layers.Add(cp);
}
cp.SetValue(Canvas.LeftProperty, rect.Left);
cp.SetValue(Canvas.TopProperty, rect.Top);
cp.Height = rect.Height;
cp.Width = rect.Width;
}
}
/// <summary>
/// Draw Ellipse around the Intersection of
/// Horizontal and Vertical markers
/// </summary>
/// <param name="pnt"></param>
ChartPanelObject CreateEllipse(Point pnt)
{
Border sp = new Border();
sp.Height = 50;
sp.Width = 50;
var obj = new ChartPanelObject();
Ellipse el = new Ellipse();
el.Height = 50;
el.Width = 50;
el.StrokeThickness = 2;
el.Stroke = new SolidColorBrush(Colors.Red);
sp.Child = el;
obj.DataPoint = new Point(ellipseDataPoint.X, ellipseDataPoint.Y );
obj.Content = sp;
return obj;
}
ChartPanelObject CreateMarker(bool isHorizontal, Point pnt)
{
var obj = new ChartPanelObject();
var bdr = new Border()
{
BorderBrush = Background = new SolidColorBrush(Colors.Red),
Padding = new Thickness(2),
};
if (isHorizontal)
{
bdr.BorderThickness = new Thickness(0, 2, 0, 0);
bdr.Margin = new Thickness(0, -1, 0, 0);
obj.HorizontalContentAlignment = HorizontalAlignment.Stretch;
if (pnt.X == 0 && pnt.Y == 0)
obj.DataPoint = new Point(double.NaN, 0.5);
else
{
//Data Point where Mouse cursor is present
Point dpt = chart.View.PointToData(pnt);
///Markers are created based on the Horizontal movement
///of mouse cursor. We have to track whether the mouse
///cursor moved towards left or right from the last position.
///For this we need to determine the two DataPoints plotted
///between which the current mouse position is placed.
double val;
// Gets the index of the nearest data point
int ptIndex = chart.View.DataIndexFromPoint(pnt, 0, MeasureOption.X, out val);
// Use the above index to calculate the Coordinates of that nearest Data Point
Point closeScreenPoint = chart.View.DataIndexToPoint(0, ptIndex);
// Get the location of the next data point depending on whether mouse was
// was moved towards left or right
Point awayScreenPoint;
if (pnt.X > closeScreenPoint.X)
awayScreenPoint = chart.View.DataIndexToPoint(0, ptIndex + 1);
else
awayScreenPoint = chart.View.DataIndexToPoint(0, ptIndex - 1);
//Get coordinates where Vertical marker will intersect the chart line
double crossY = GetY(closeScreenPoint, awayScreenPoint, pnt);
//Get DataPoint for the above intersecting coordinates
Point closeDataPoint = chart.View.PointToData(new Point(pnt.X, crossY));
// set the DataPoint as the Attached data source for the Horizontal marker
obj.DataPoint = new Point(double.NaN, closeDataPoint.Y);
ellipseDataPoint.Y = closeDataPoint.Y;
// ellipseDataPoint.Y = obj.DataPoint.Y;
}
}
else
{
bdr.BorderThickness = new Thickness(2, 0, 0, 0);
bdr.Margin = new Thickness(-1, 0, 0, 0);
obj.VerticalContentAlignment = VerticalAlignment.Stretch;
Point dpt = chart.View.PointToData(pnt);
obj.DataPoint = new Point(dpt.X, double.NaN);
ellipseDataPoint.X = dpt.X;
}
bdr.IsHitTestVisible = false;
obj.Content = bdr;
return obj;
}
