reimplement raylines

lightweight_charts/abstract.py

@@ -8,7 +8,7 @@ import pandas as pd
 
 from .table import Table
 from .toolbox import ToolBox
-from .drawings import Box, HorizontalLine, TrendLine, TwoPointDrawing, VerticalLine, VerticalSpan
+from .drawings import Box, HorizontalLine, RayLine, TrendLine, TwoPointDrawing, VerticalLine, VerticalSpan
 from .topbar import TopBar
 from .util import (
     BulkRunScript, Pane, Events, IDGen, as_enum, jbool, js_json, TIME, NUM, FLOAT,
@@ -680,11 +680,9 @@ class AbstractChart(Candlestick, Pane):
         """
         Creates and returns a Histogram object.
         """
-        histogram = Histogram(
+        return Histogram(
             self, name, color, price_line, price_label,
             scale_margin_top, scale_margin_bottom)
-        # histogram._push_to_legend()
-        return histogram
 
     def lines(self) -> List[Line]:
         """
@@ -726,11 +724,11 @@ class AbstractChart(Candlestick, Pane):
         round: bool = False,
         color: str = '#1E80F0',
         width: int = 2,
-        style: LINE_STYLE = 'solid'
-    ) -> Line:
+        style: LINE_STYLE = 'solid',
+        text: str = ''
+    ) -> RayLine:
     # TODO
-        line = RayLine(self, '', color, style, width, False, False, False)
-        return line
+        return RayLine(*locals().values())
 
     def vertical_line(
         self,

lightweight_charts/drawings.py

@@ -147,6 +147,36 @@ class VerticalLine(Drawing):
         self.run_script(f'{self.id}.applyOptions({{text: `{text}`}})')
 
 
+class RayLine(Drawing):
+    def __init__(self,
+        chart,
+        start_time: TIME,
+        value: NUM,
+        round: bool = False,
+        color: str = '#1E80F0',
+        width: int = 2,
+        style: LINE_STYLE = 'solid',
+        text: str = '',
+        func = None,
+    ):
+        super().__init__(chart, func)
+        self.run_script(f'''
+        {self.id} = new Lib.RayLine(
+            {{time: {self.chart._single_datetime_format(start_time)}, price: {value}}},
+            {{
+                lineColor: '{color}',
+                lineStyle: {as_enum(style, LINE_STYLE)},
+                width: {width},
+                text: `{text}`,
+            }},
+            callbackName={f"'{self.id}'" if func else 'null'}
+        )
+        {chart.id}.series.attachPrimitive({self.id})
+        ''')
+
+
+
+
 class Box(TwoPointDrawing):
     def __init__(self,
         chart,

src/general/index.ts

@@ -6,3 +6,4 @@ export * from './legend';
 export * from './table';
 export * from './toolbox';
 export * from './topbar';
+export * from '../horizontal-line/ray-line';

src/horizontal-line/pane-view.ts

@@ -17,7 +17,7 @@ export class HorizontalLinePaneView extends DrawingPaneView {
         const timeScale = this._source.chart.timeScale()
         const series = this._source.series;
         if (this._source._type == "RayLine") {
-            this._point.x = timeScale.logicalToCoordinate(point.logical);
+            this._point.x = point.time ? timeScale.timeToCoordinate(point.time) : timeScale.logicalToCoordinate(point.logical);
         }
         this._point.y = series.priceToCoordinate(point.price);
     }

src/horizontal-line/ray-line.ts

@@ -10,7 +10,7 @@ export class RayLine extends HorizontalLine {
     _type = 'RayLine';
 
     constructor(point: Point, options: DeepPartial<DrawingOptions>) {
-        super(point, options);
+        super({...point}, options);
         this._point.time = point.time;
     }