Added the render_drawings parameter to update

Added the `round` parameter to `vertical_span`

README.md

@@ -71,7 +71,7 @@ if __name__ == '__main__':
 
     chart.show()
 
-    last_close = df1.iloc[-1]
+    last_close = df1.iloc[-1]['close']
 
     for i, series in df2.iterrows():
         chart.update(series)

docs/source/reference/abstract_chart.md

@@ -27,7 +27,7 @@ ___
 
 
 
-```{py:method} update(series: pd.Series)
+```{py:method} update(series: pd.Series, render_drawings: bool = False)
 Updates the chart data from a bar.
 
 Series labels should be akin to [`set`](#AbstractChart.set).
@@ -105,7 +105,7 @@ ___
 
 
 
-```{py:method} vertical_span(start_time: TIME | list | tuple, end_time: TIME = None, color: COLOR = 'rgba(252, 219, 3, 0.2)')
+```{py:method} vertical_span(start_time: TIME | list | tuple, end_time: TIME = None, color: COLOR = 'rgba(252, 219, 3, 0.2)', round: bool = False)
 
 Creates and returns a `VerticalSpan` object.
 

examples/2_live_data/live_data.py

@@ -13,7 +13,7 @@
 
     chart.show()
 
-    last_close = df1.iloc[-1]
+    last_close = df1.iloc[-1]['close']
 
     for i, series in df2.iterrows():
         chart.update(series)

lightweight_charts/abstract.py

@@ -357,12 +357,15 @@ def _toggle_data(self, arg):
         ''')
 
     def vertical_span(self, start_time: Union[TIME, tuple, list], end_time: TIME = None,
-                      color: str = 'rgba(252, 219, 3, 0.2)'):
+                      color: str = 'rgba(252, 219, 3, 0.2)', round: bool = False):
         """
         Creates a vertical line or span across the chart.\n
         Start time and end time can be used together, or end_time can be
         omitted and a single time or a list of times can be passed to start_time.
         """
+        if round:
+            start_time = self._single_datetime_format(start_time)
+            end_time = self._single_datetime_format(end_time) if end_time else None
         return VerticalSpan(self, start_time, end_time, color)
 
 
@@ -590,7 +593,7 @@ def set(self, df: pd.DataFrame = None, render_drawings=False):
                 {self.id}.chart.priceScale("right").applyOptions({{autoScale: true}})
         ''')
 
-    def update(self, series: pd.Series, _from_tick=False):
+    def update(self, series: pd.Series, render_drawings=False, _from_tick=False):
         """
         Updates the data from a bar;
         if series['time'] is the same time as the last bar, the last bar will be overwritten.\n
@@ -607,7 +610,10 @@ def update(self, series: pd.Series, _from_tick=False):
             if (stampToDate(lastBar({self.id}.data).time).getTime() === stampToDate({series['time']}).getTime()) {{
                 {self.id}.data[{self.id}.data.length-1] = {bar}
             }}
-            else {self.id}.data.push({bar})
+            else {{
+                {self.id}.data.push({bar})
+                {f'{self.id}.toolBox.renderDrawings()' if render_drawings else ''}
+            }}
             {self.id}.series.update({bar})
         ''')
         if 'volume' not in series:

lightweight_charts/js/toolbox.js

@@ -10,6 +10,7 @@ if (!window.ToolBox) {
             this.drawings = []
             this.chart.cursor = 'default'
             this.makingDrawing = false
+            this.mouseDown = false
 
             this.hoverBackgroundColor = 'rgba(80, 86, 94, 0.7)'
             this.clickBackgroundColor = 'rgba(90, 106, 104, 0.7)'
@@ -270,7 +271,7 @@ if (!window.ToolBox) {
                         document.body.style.cursor = this.chart.cursor
                         hoveringOver = null
                         contextMenu.listen(false)
-                        if (!mouseDown) {
+                        if (!this.mouseDown) {
                             document.removeEventListener('mousedown', checkForClick)
                             document.removeEventListener('mouseup', checkForRelease)
                         }
@@ -281,11 +282,11 @@ if (!window.ToolBox) {
             let originalIndex
             let originalTime
             let originalPrice
-            let mouseDown = false
+            this.mouseDown = false
             let clickedEnd = false
             let labelColor
             let checkForClick = (event) => {
-                mouseDown = true
+                this.mouseDown = true
                 document.body.style.cursor = 'grabbing'
                 this.chart.chart.applyOptions({handleScroll: false})
                 this.chart.chart.timeScale().applyOptions({shiftVisibleRangeOnNewBar: false})
@@ -312,7 +313,7 @@ if (!window.ToolBox) {
                 document.removeEventListener('mousedown', checkForClick)
             }
             let checkForRelease = (event) => {
-                mouseDown = false
+                this.mouseDown = false
                 document.body.style.cursor = this.chart.cursor
 
                 this.chart.chart.applyOptions({handleScroll: true})
@@ -330,7 +331,7 @@ if (!window.ToolBox) {
             let checkForDrag = (param) => {
                 if (!param.point) return
                 this.chart.chart.unsubscribeCrosshairMove(checkForDrag)
-                if (!mouseDown) return
+                if (!this.mouseDown) return
 
                 let priceAtCursor = this.chart.series.coordinateToPrice(param.point.y)
 
@@ -363,7 +364,7 @@ if (!window.ToolBox) {
             let crosshairHandlerTrend = (param) => {
                 if (!param.point) return
                 this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerTrend)
-                if (!mouseDown) return
+                if (!this.mouseDown) return
 
                 let currentPrice = this.chart.series.coordinateToPrice(param.point.y)
                 let currentTime = this.chart.chart.timeScale().coordinateToTime(param.point.x)
@@ -391,7 +392,7 @@ if (!window.ToolBox) {
             let crosshairHandlerHorz = (param) => {
                 if (!param.point) return
                 this.chart.chart.unsubscribeCrosshairMove(crosshairHandlerHorz)
-                if (!mouseDown) return
+                if (!this.mouseDown) return
                 hoveringOver.updatePrice(this.chart.series.coordinateToPrice(param.point.y))
                 setTimeout(() => {
                     this.chart.chart.subscribeCrosshairMove(crosshairHandlerHorz)
@@ -401,6 +402,7 @@ if (!window.ToolBox) {
         }
 
         renderDrawings() {
+            if (this.mouseDown) return
             this.drawings.forEach((item) => {
                 if ('price' in item) return
                 let startDate = Math.round(item.from[0]/this.chart.interval)*this.chart.interval
@@ -414,9 +416,13 @@ if (!window.ToolBox) {
                 this.chart.series.removePriceLine(drawing.line)
             }
             else {
+                let range = this.chart.chart.timeScale().getVisibleLogicalRange()
+
                 this.chart.chart.timeScale().applyOptions({shiftVisibleRangeOnNewBar: false})
                 this.chart.chart.removeSeries(drawing.line);
                 this.chart.chart.timeScale().applyOptions({shiftVisibleRangeOnNewBar: true})
+
+                this.chart.chart.timeScale().setVisibleLogicalRange(range)
             }
             this.drawings.splice(this.drawings.indexOf(drawing), 1)
             this.saveDrawings()

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name='lightweight_charts',
-    version='1.0.18.8',
+    version='1.0.19',
     packages=find_packages(),
     python_requires='>=3.8',
     install_requires=[