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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

My first written module

Scheduled Pinned Locked Moved Development
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  • B Offline
    BKeyport Module Developer
    last edited by Apr 9, 2020, 9:01 PM

    Sam,

    I guess what I’m looking for is a “for dummies” version of CSS introduction. I’m not understanding how to use it effectively in building a webpage, once I understand that aspect of it, I can modify what I know into my module. That’s been my problem, jumping from absolute noob to basic understanding.

    The "E" in "Javascript" stands for "Easy"

    S 1 Reply Last reply Apr 9, 2020, 9:06 PM Reply Quote 0
    • S Offline
      sdetweil @BKeyport
      last edited by Apr 9, 2020, 9:06 PM

      @BKeyport there are three layers of cascading style sheets.

      main.css
      any stylesheet inserted by module (module reply to the getStyles() function call
      custom.css

      u can target system wide, or you can target to module specific

      .Modulename .class .class…etc {
      settings
      }

      the .class .class has different operations depending on if there is space between the classnames…

      you can target JUST a specific implementation of a class, which is used inside a specific class or tag, multiple layers into the style sheet tree
      or in general all uses of a class by that module

      there are good books and online resources… it takes time and practice to get it right… and there are amazing things you can do…

      Sam

      How to add modules

      learning how to use browser developers window for css changes

      S 1 Reply Last reply Apr 9, 2020, 9:41 PM Reply Quote 0
      • S Offline
        sdetweil @sdetweil
        last edited by Apr 9, 2020, 9:41 PM

        @BKeyport something that seems like it should be easy, in css is

        make a vertical list of buttons with images,with divs, buttons, images, spans, easy
        now rotate that list to be horizontal… easy with flex-direction… but
        the images turned too…
        so, now rotate the images back 90 degrees…

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        1 Reply Last reply Reply Quote 0
        • B Offline
          BKeyport Module Developer
          last edited by Apr 17, 2020, 3:21 AM

          OK… so, I figured out CSS except for how to write the file to work with magic mirror - this is where the documentation don’t exist.

          Some CSS files have the module name in front of the css class, like “.MMM-NewsFeedTicker .tickerbody” - others just have the class as “.tickerbody” - what’s the difference?

          Thanks!

          The "E" in "Javascript" stands for "Easy"

          L 1 Reply Last reply Apr 17, 2020, 12:05 PM Reply Quote 0
          • L Offline
            lavolp3 Module Developer @BKeyport
            last edited by sdetweil Sep 11, 2022, 1:11 PM Apr 17, 2020, 12:05 PM

            @BKeyport In this case css works in hierarchies.

            It looks in the webpage from top (document) to bottom for the classes, ids or elements you give it. When the page is loaded all the css files present (main.css, custom.css all module css) are being merged into one big css pool.
            Giving it the hierarchy of classes (or elements), you can specify the css adaption.

            Imagine your module has a class “.tickerbody” and another modules does as well.

            Then, if you reference it in your custom.css, .tickerbody would apply the properties to BOTH modules.
            But if you use .MMM-yourmodule .tickerbody it is only applied to the class tickerbody that is A CHILD OF the class .MMM-yourmodule.
            You could also use something like .MMM-yourmodule div (note the missing . before div, meaning not a class is referenced but an element) which would affect ALL divs that are child elements of your module. Or .MMM-yourmodule .tickerbody spanwhich would affect all spans in the tickerbody of YOUR module.
            In main.css you can see things like ‘.dimmed’. This affects ALL elements of the whole mirror with the class .dimmed and gives the respective color.

            Every module gets it’s own name as class, this is general MM behaviour.

            How to troubleshoot modules
            MMM-soccer v2, MMM-AVStock

            L B 2 Replies Last reply Apr 17, 2020, 12:10 PM Reply Quote 0
            • L Offline
              lavolp3 Module Developer @lavolp3
              last edited by Apr 17, 2020, 12:10 PM

              @BKeyport Have you seen this?
              https://forum.magicmirror.builders/topic/6808/css-101-getting-started-with-css-and-understanding-how-css-works?_=1587124513929

              How to troubleshoot modules
              MMM-soccer v2, MMM-AVStock

              1 Reply Last reply Reply Quote 0
              • B Offline
                BKeyport Module Developer @lavolp3
                last edited by Apr 17, 2020, 9:30 PM

                @lavolp3 Wow. that’s a really handy description, Thanks.

                The "E" in "Javascript" stands for "Easy"

                1 Reply Last reply Reply Quote 0
                • B Offline
                  BKeyport Module Developer
                  last edited by Apr 17, 2020, 10:36 PM

                  Capture.PNG

                  Well, there it is. My silly little module. Pretty.

                  The "E" in "Javascript" stands for "Easy"

                  S 1 Reply Last reply Apr 17, 2020, 10:43 PM Reply Quote 1
                  • S Offline
                    sdetweil @BKeyport
                    last edited by Apr 17, 2020, 10:43 PM

                    @BKeyport nice work!

                    Sam

                    How to add modules

                    learning how to use browser developers window for css changes

                    1 Reply Last reply Reply Quote 0
                    • B Offline
                      BKeyport Module Developer
                      last edited by Apr 19, 2020, 10:06 AM

                      Ah, the heck with it. It’s released!

                      The "E" in "Javascript" stands for "Easy"

                      1 Reply Last reply Reply Quote 1
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