Quick camera widget

q_cam.rb

@urlsConfig = 'assets/config/q_cam_urls.json'

# function to validate json
def valid_json? (json)
  JSON.parse(json)
  return true
rescue JSON::ParserError
  return false
end

SCHEDULER.every '30s', :first_in => 0 do |job|
  str = File.open(@urlsConfig, 'r+:utf-8').read()
  if valid_json?(str)
     JSON.parse(str).each { |widget, url| send_event(widget, image: url+'#'+Time.now.to_i.to_s) }
  end
end

q_cam_urls.json

{"cafe":"http://127.0.0.1/url_to_cafe_camera_image","football_table":"http://127.0.0.1/url_to_football_table_camera_image"}

Quick Camera.md

Description

This is simple Dashing widget to display images from any URL, e.g. WebCam pointed to your favorite place like football table, cafe, etc.

##Usage

The widget needs my slightly improved standard image widget. Put the q_cam.rb file in your /jobs folder. Put q_cam_urls.json to /assets/config/.

Make sure directory /assets/config is accessible by Dashing user.

To include the widget in a dashboard, add the following snippet to the dashboard layout file:

<li data-row="1" data-col="1" data-sizex="1" data-sizey="1">
  <div data-id="football_table" data-view="Image" data-width="100%"></div>
</li>

##Settings

Amend /assets/config/q_cam_urls.json to have proper WebCam URLs.

There is no need to restart service if job is already running and configuration file is amended.