Charts and plots via logging

[mottosso]

Goal

Provide support for drawing custom charts and plots via the logging mechanism.

Implementation

The log mechanism is used to output text and can be extended to include support for graphics. Instances of charts and plots can replace the arbitrary string and provide relevant data points for its visualisation in a GUI.

class MyPlugin(pyblish.api.Plugin):
  def process(self, context):
    data = [
      {"value": 2, "color": "blue"},
      {"value": 5, "color": "green"},
      {"value": 1.7, "color": "red"},
    ]

    pie = pyblish.api.PieChart(data)
    bars = pyblish.api.BarChart(data)

    self.log.info("Processing context..")
    self.log.info(pie)
    self.log.debug(bars)

    data = {
      "label": "My First dataset",
      "fillColor": "rgba(220,220,220,0.2)",
      "strokeColor": "rgba(220,220,220,1)",
      "pointColor": "rgba(220,220,220,1)",
      "pointStrokeColor": "#fff",
      "pointHighlightFill": "#fff",
      "pointHighlightStroke": "rgba(220,220,220,1)",
      "data": [65, 59, 80, 81, 56, 55, 40]
    }

    self.log.warning(pyblish.api.LineChart(data))

On the Qt side, a chart is drawn either via the Qt Graphics View framework or the Canvas element with help from Chart.js.

In a console, either the pure data can be written out or discarded based on some setting.