149 lines
5.2 KiB
ReStructuredText
149 lines
5.2 KiB
ReStructuredText
Touchscreen Components
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======================
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.. seo::
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:description: Instruction for using touchscreen components.
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:image: folder-open.svg
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The ``touchscreen`` component contains the base code for most touchscreen driver components
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available in ESPHome and is responsible for passing the touch events to
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``binary_sensors`` with the ``touchscreen`` platform.
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.. _config-touchscreen:
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Base Touchscreen Configuration
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------------------------------
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.. code-block:: yaml
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# Example touchscreen
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touchscreen:
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- platform: ...
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display: display1
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on_touch:
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then:
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...
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on_update:
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then:
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...
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on_release:
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then:
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...
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Configuration variables:
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************************
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- **display** (*Required*, :ref:`config-id`): The display to use this touchscreen with. This will be provided automatically if only one display is configured on the device.
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- **on_touch** (*Optional*, :ref:`Automation <automation>`): An automation to perform
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when the touchscreen is touched. See :ref:`touchscreen-on_touch`.
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- **on_update** (*Optional*, :ref:`Automation <automation>`): An automation to perform
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when the touchscreen is touched. See :ref:`touchscreen-on_update`.
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- **on_release** (*Optional*, :ref:`Automation <automation>`): An automation to perform
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when the touchscreen is no longer touched. See :ref:`touchscreen-on_release`.
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.. _touchscreen-touchpoint:
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``TouchPoint`` Argument Type
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----------------------------
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Both the :ref:`touchscreen-on_touch` and :ref:`touchscreen-on_update` have an argument of the type :apistruct:`touchscreen::TouchPoint` in a
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list (``on_update``) or as an ``optional`` (``on_touch``).
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The integer members for the touch positions below are in relation to the display width and height:
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- ``x`` and ``y`` are the current position.
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- ``x_last`` and ``y_last`` are the previous position.
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- ``x_first`` and ``y_first`` are the position of the touch when it was first detected.
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- ``x_raw`` and ``y_raw`` are for calibrating the touchscreen in relation of the display. This replaces the properties with the same name in the touchscreen classes.
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- ``id`` is a number provided by the touchscreen to uniquely identify the touch on a multi-touch screen.
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- ``state`` indicates the state of the touch. This can be **1**, indicating it is an initial touch, or **2** indicating the touch position has changed/moved.
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.. _touchscreen-on_touch:
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``on_touch`` Trigger
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--------------------
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This automation will be triggered when the touchscreen initially detects a touch on the touchscreen; it will not be fired again until
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all touches (for multi-touch supported drivers) are released.
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NOTE: This has changed (from ESPHome 2023.11.6.) To receive continuous updates from touch drags, use :ref:`touchscreen-on_update`.
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This trigger provides two arguments named ``touch`` of type *touchpoint* and ``touches`` with a list of all touches.
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.. _touchscreen-on_update:
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``on_update`` Trigger
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---------------------
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This new automation will be triggered when the touchscreen detects an extra touch or that a touch has moved around on the screen.
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This trigger provides one argument named ``touches`` of type :apiref:`touchscreen::TouchPoints_t` which has a list of
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:ref:`touchscreen-touchpoint`.
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This trigger may be useful to detect gestures such as swiping across the display.
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.. _touchscreen-on_release:
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``on_release`` Trigger
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----------------------
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This automation will be triggered when all touches are released from the touchscreen.
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At this point of time it has no extra arguments.
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Binary Sensor
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-------------
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The ``touchscreen`` binary sensor allows you to setup areas on the touch screen as virtual
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buttons.
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.. code-block:: yaml
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binary_sensor:
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- platform: touchscreen
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name: Top Left Touch Button
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x_min: 0
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x_max: 100
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y_min: 0
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y_max: 100
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page_id: home_page_id
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Configuration variables:
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************************
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- **name** (*Optional*, string): The name for the binary sensor.
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- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
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- **touchscreen_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the touchscreen.
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- **x_min** (**Required**, int): Left coordinate of the screen area to be detected as the virtual button.
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- **x_max** (**Required**, int): Right coordinate of the screen area to be detected as the virtual button.
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- **y_min** (**Required**, int): Top coordinate of the screen area to be detected as the virtual button.
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- **y_max** (**Required**, int): Bottom coordinate of the screen area to be detected as the virtual button.
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- **page_id** (*Optional*, :ref:`config-id`): Only trigger this binary sensor if the display is showing this page.
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- All other options from :ref:`Binary Sensor <config-binary_sensor>`.
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See Also
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--------
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- :ref:`Binary Sensor Filters <binary_sensor-filters>`
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- :doc:`Inkplate 6 Plus </components/display/inkplate6>`
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- :doc:`EKTF2232 </components/touchscreen/ektf2232>`
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- :doc:`XPT2046 </components/touchscreen/xpt2046>`
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- :doc:`TT21100 </components/touchscreen/tt21100>`
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- :doc:`GT911 </components/touchscreen/gt911>`
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- :apiref:`touchscreen/touchscreen.h`
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- :apiref:`touchscreen/binary_sensor/touchscreen_binary_sensor.h`
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- :ghedit:`Edit`
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.. toctree::
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:maxdepth: 1
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:glob:
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*
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