subscribeClick

[sbgmicromax]

Description

Need to get the value and time of the series from the point of click, for further calculation purpose in the strategy

Code example

No response

Method of implementation

No response

[emma-uw]

Hey, this has been posted previously somewhere around here and I used it since then.

def subscribe_click(chart, *, callback):
    js = (
        'function clickHandler(param) {'
        'if (!param.point) {'
        'return;'
        '}'
        f'const time = {chart.id}.chart.timeScale().coordinateToTime(param.point.x);'
        f'const price = {chart.id}.series.coordinateToPrice(param.point.y);'
        'const data = JSON.stringify({time: time, price: price});'
        'window.callbackFunction(`on_click_~_${data}`);'
        '}'
        f'{chart.id}.chart.subscribeClick(clickHandler);'
    )

    def decorated_callback(data):
        data = json.loads(data)
        data = {
            'timestamp': pd.to_datetime(data['time'], unit='s'),
            'price': data['price'],
        }
        return callback(data, chart, chart.candle_data)

    chart.win.handlers['on_click'] = decorated_callback
    chart.win.run_script(js)

def on_chart_click(data, chart, candle_data): print(data['timestamp'])

subscribe_click(chart, callback=on_chart_click)