ValuePlayerWidget

ValuePlayerWidget is a tool to save and display the different steps of a visualisation. It allows the Player to watch all the steps leading to a final step backward and forward. It is also possible to set an UI : you may either display buttons or a delpy interface (which is a Blockly interface for jupyter).

ValuePlayerWidget takes four parameters for its initialization :

• 'visualisation' : this parameter is obligatory, it has to be or inheritate from a traitlets object. This will be the visualisation, le Player interacts with.

• 'UI' : This parameter is optional and set which user interface will be displayed. It is set to None by default. Possible values :

  • None : No user interface
  • 'btn' : display action buttons
  • 'delpy' : display a Delpy interface

• 'actions' : this parameter is optionnal. It has to be a dictionary of lists. Each key of the dictionnary defines either a column for the buttons UI or a category for the Delpy UI. This is an example to understand its structure :

  • actions={'category1':[('f1_name',f1,p1,p2), ('f2_name',f2)],'category2':[('f1_name',f1,p3,p4),('f3_name',f3,p5),('f3_name',f3)]}

  Each list contains tupples and each tupple defines either a button or a deply method. In this example, we have two categories/columns. For each action, we give a tupple t in which we may find at least 2 elements : * "fX_name" : the name of the action, it will be displayed on the buttons or become the name of the Delpy method * "f1" : the function we wihs to execute * args : it is optional, they are arguments to give to the function before it is executed

• 'language' : this parameter is optionnal and set to 'en_EN' by default. A french version is also available with language='fr_FR'

There are several possibles modes to watch the steps :

• With the sliders : The player may choose which step to display with the "Time" slider and choose the speed with the "Speed" slider
• With the buttons, each butons changes the way to display the step (from the left to the right):
  • Display the first step and pause
  • Display the steps backward or/and increase the speed
  • Display the steps backward with a normal speed
  • Display the previous step and pause
  • Play/Pause
  • Display the next step and pause
  • Display the steps with a normal speed
  • Display the steps or/and increase the speed
  • Display the last step and pause

Link to the Demo

Binder :

Install :

pip install valueplayerwidget