Added line type for LineSeries

docs/source/reference/abstract_chart.md

@@ -56,7 +56,7 @@ ___
 
 
 
-```{py:method} create_line(name: str, color: COLOR, style: LINE_STYLE, width: int, price_line: bool, price_label: bool) -> Line
+```{py:method} create_line(name: str, color: COLOR, style: LINE_STYLE, type: LINE_TYPE, width: int, price_line: bool, price_label: bool) -> Line
 
 Creates and returns a Line object, representing a `LineSeries` object in Lightweight Charts and can be used to create indicators. As well as the methods described below, the `Line` object also has access to:
 

docs/source/reference/line.md

@@ -1,7 +1,7 @@
 # `Line`
 
 
-````{py:class} Line(name: str, color: COLOR, style: LINE_STYLE, width: int, price_line: bool, price_label: bool, price_scale_id: str)
+````{py:class} Line(name: str, color: COLOR, style: LINE_STYLE, type: LINE_TYPE, width: int, price_line: bool, price_label: bool, price_scale_id: str)
 
 The `Line` object represents a `LineSeries` object in Lightweight Charts and can be used to create indicators. As well as the methods described below, the `Line` object also has access to:
 

docs/source/reference/typing.md

@@ -21,6 +21,9 @@ Throughout the library, colors should be given as either rgb (`rgb(100, 100, 100
 ```{py:class} LINE_STYLE(Literal['solid', 'dotted', 'dashed', 'large_dashed', 'sparse_dotted'])
 ```
 
+```{py:class} LINE_TYPE(Literal['simple', 'with_steps', 'curved'])
+```
+
 ```{py:class} MARKER_POSITION(Literal['above', 'below', 'inside'])
 ```
 

lightweight_charts/abstract.py

@@ -12,7 +12,7 @@
 from .topbar import TopBar
 from .util import (
     BulkRunScript, Pane, Events, IDGen, as_enum, jbool, js_json, TIME, NUM, FLOAT,
-    LINE_STYLE, MARKER_POSITION, MARKER_SHAPE, CROSSHAIR_MODE,
+    LINE_STYLE, LINE_TYPE, MARKER_POSITION, MARKER_SHAPE, CROSSHAIR_MODE,
     PRICE_SCALE_MODE, marker_position, marker_shape, js_data,
 )
 
@@ -424,7 +424,7 @@ def vertical_span(
 
 
 class Line(SeriesCommon):
-    def __init__(self, chart, name, color, style, width, price_line, price_label, price_scale_id=None, crosshair_marker=True):
+    def __init__(self, chart, name, color, style, type, width, price_line, price_label, price_scale_id=None, crosshair_marker=True):
 
         super().__init__(chart, name)
         self.color = color
@@ -435,6 +435,7 @@ def __init__(self, chart, name, color, style, width, price_line, price_label, pr
                 {{
                     color: '{color}',
                     lineStyle: {as_enum(style, LINE_STYLE)},
+                    lineType: {as_enum(type, LINE_TYPE)},
                     lineWidth: {width},
                     lastValueVisible: {jbool(price_label)},
                     priceLineVisible: {jbool(price_line)},
@@ -721,13 +722,13 @@ def fit(self):
 
     def create_line(
             self, name: str = '', color: str = 'rgba(214, 237, 255, 0.6)',
-            style: LINE_STYLE = 'solid', width: int = 2,
+            style: LINE_STYLE = 'solid', type: LINE_TYPE = 'simple', width: int = 2,
             price_line: bool = True, price_label: bool = True, price_scale_id: Optional[str] = None
     ) -> Line:
         """
         Creates and returns a Line object.
         """
-        self._lines.append(Line(self, name, color, style, width, price_line, price_label, price_scale_id))
+        self._lines.append(Line(self, name, color, style, type, width, price_line, price_label, price_scale_id))
         return self._lines[-1]
 
     def create_histogram(

lightweight_charts/util.py

@@ -66,6 +66,8 @@ def jbool(b: bool): return 'true' if b is True else 'false' if b is False else N
 
 LINE_STYLE = Literal['solid', 'dotted', 'dashed', 'large_dashed', 'sparse_dotted']
 
+LINE_TYPE = Literal['simple', 'with_steps', 'curved']
+
 MARKER_POSITION = Literal['above', 'below', 'inside']
 
 MARKER_SHAPE = Literal['arrow_up', 'arrow_down', 'circle', 'square']