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95 lines
3.5 KiB
Plaintext
95 lines
3.5 KiB
Plaintext
.. csv-table::
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:escape: ^
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:widths: 20, 30
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"
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Generic variables, available for all ``AdafruitGFX_Helper`` enabled plugins, currently: :ref:`P095_page`, :ref:`P096_page`, :ref:`P116_page` and :ref:`P131_page`.
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","
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Generic notes:
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* If an argument has comma's or spaces, then that part should be 'wrapped' in either double quotes ``^"``, single quotes ``^'`` or back-ticks ``^```.
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* The ``<taskname>`` part is the name of the Device task.
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* True(1)/False(0) values can optionally return -1 to indicate an invalid request, like a missing Window Id.
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* All sizes, lengths etc. are returned in pixels.
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``[<taskname>#win]``
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Get the currently active Window Id, expected range: 0..255.
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``[<taskname>#iswin,<windowId>]``
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Is the request Window Id valid, expected result: 1 = true, 0 = false.
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``[<taskname>#width]``
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Get the width of the currently active Window and rotation, expected range 0..<largest display dimension>.
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``[<taskname>#height]``
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Get the height of the currently active Window and rotation, expected range 0..<largest display dimension>.
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``[<taskname>#length,^"<text to measure>^"]``
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Get the length of the text in pixels for the current font and text scaling. Needs quotes if text contains space(s), comma(s) or quote(s).
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``[<taskname>#textheight,^"<text to measure>^"]``
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Get the height of the text in pixels for the current font and text scaling. Needs quotes if the text contains space(s), comma(s) or quote(s).
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``[<taskname>#rot]``
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Get the currently active rotation, expected range 0..3 (0 = 0 degrees, 1 = +90 degrees, 2 = +180 degrees, 3 = +270 degrees).
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``[<taskname>#txs]``
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Get the currently active text scaling, expected range 1..10, limited to the max. font scaling allowed for the display.
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``[<taskname>#tpm]``
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Get the currently active text print mode, expected range 0..3, see the ``tpm`` subcommand for details.
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.. csv-table::
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:escape: ^
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:widths: 20, 10
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Example rules for centering a value (time) in a window:
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.. code:: none
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on centertime do // NB: Comments & extra spaces should be removed to reduce rules size!
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if [st7796#iswin,%eventvalue1|2%]=1 // default window: 2
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let,120,[st7796#win] // store current window
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st77xx,win,%eventvalue1|2% // switch to window
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let,121,[st7796#txs] // store textscaling
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st77xx,txs,3 // set text scaling
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let,122,[st7796#rot] // store rotation
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st77xx,rot,%eventvalue2|0% // set rotation, default: 0
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let,123,([st7796#width]-[st7796#length,%systm_hm%])/2 // (width - textlength)/2
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let,124,([st7796#height]-[st7796#textheight,%systm_hm%])/2 // (height - textheight)/2
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st77xx,txtfull,[int#123],[int#124],3,red,black,%systm_hm% // Display time red on black
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st77xx,rot,%v122% // restore rotation
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st77xx,txs,%v121% // restore text scaling
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st77xx,win,%v120% // restore window
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endif
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endon
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on Clock#Time=All,**:** do
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asyncevent,centertime=2 // Update the display every minute
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endon
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Display Task is named ``st7796``, using trigger ``st77xx``
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Usage: ``asyncevent,centertime[=<win>[,<rot>]]``
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