Luc 39e06975f2 Update from refactoring branch
### Maintenance page
* Add add tab color for mobile view
* Add spellcheck off / autocorect off in input
* Add disconnect button when authenticate enabled
* Add Invalid user or password message when authentication failed

### Board support
* Add ESP32 S2 support
* Add ESP32 S3 support
* Add ESP32 C3 support

### ESP commands
* Add command 701 to control GCODE streaming
* Remove command 901 as duplicate
* Update command 420 to add more details
* Use text as default output
* All json on all commands for formated output

### Core
* Add benchmak function to check transfer speed (for test only-not production)
* Merge code for ESP3DLib support
* Add better printer display support (M117 / Serial TFT)
* Use ESP32 analogWrite instead of emulated one

### Modules
* Display
	* Refactor code
	* Remove SPI ILI 9341 / 9488 support as not suitable
      * Add ST7789 support (135x240 / 240x240)
* Filesystem
	* Bug fixes due to esp core updates
	* Better SD sharing mecanism
      * Better global FS management
* FTP
	* Add SD sharing support
	* Better global FS management
* GCODE Host
	* Add basic support for macro files
      * Add ESP command support
      * Use not blocking method to stream commands / handle response
* Notifications
	* Add IFTTT notification service
	* Add WebUI notification
	* Add ESP3D display notification
* WebDav
	* Add SD sharing support
	* Add bug fix from https://github.com/d-a-v/ESPWebDAV
	* Better global FS management
* Websocket
	* Add function to handle zombies connections
* WiFi
	* Fix connection to AP sometime fail
	* Fix low signal not diplayed in ESP420 even connected
	* Add AP Setup mode

### Libraries
* Update SDFat-2.0.6 to 2.1.2
* Update ESP32SSDP 1.1.1 to 1.2.0
* Update TFT_eSPI-1.4.11 to 2.4.61
* Update arduinoWebSockets-2.3.5 to 2.3.6
* Update esp8266-oled-ssd1306-4.0.0 to 4.3.0
* Remove lvgl support

### Tools
* Add I2C scanner script
* Add python script to simulate/stress printer serial communication

### PlatformIO
 * Use latest 4.4.0 Espressif32 release (ESP32-arduino core 2.0.3)
 * Add fix for Flash more than 4MB
 * Add Esp32 S2/S3/C3 env
 * Add ESP32-ST7789 / esp32-TTGO_T_Display env
2022-06-01 14:56:57 +08:00

1.2 KiB

.. include:: /header.rst 
:github_url: |github_link_base|/widgets/core/btn.md

Button (lv_btn)

Overview

Buttons have no new features compared to the Base object. They are useful for semantic purposes and have slightly different default settings.

Buttons, by default, differ from Base object in the following ways:

  • Not scrollable
  • Added to the default group
  • Default height and width set to LV_SIZE_CONTENT

Parts and Styles

  • LV_PART_MAIN The background of the button. Uses the typical background style properties.

Usage

There are no new features compared to Base object.

Events

  • LV_EVENT_VALUE_CHANGED when the LV_OBJ_FLAG_CHECKABLE flag is enabled and the object is clicked. The event happens on transition to/from the checked state.

Learn more about Events.

Keys

Note that the state of LV_KEY_ENTER is translated to LV_EVENT_PRESSED/PRESSING/RELEASED etc.

See the events of the Base object too.

Learn more about Keys.

Example


.. include:: ../../../examples/widgets/btn/index.rst

API


.. doxygenfile:: lv_btn.h
  :project: lvgl