acid-drop

- Hacking the planet from a LilyGo T-Deck using custom firmware
git clone git://git.acid.vegas/acid-drop.git
colorwheel.md (1992B)
      1 ```eval_rst
      2 .. include:: /header.rst
      3 :github_url: |github_link_base|/widgets/extra/colorwheel.md
      4 ```
      5 # Color wheel (lv_colorwheel)
      6 
      7 ## Overview
      8 As its name implies *Color wheel* allows the user to select a color. The Hue, Saturation and Value of the color can be selected separately.
      9 
     10 Long pressing the object, the color wheel will change to the next parameter of the color (hue, saturation or value). A double click will reset the current parameter.
     11 
     12 ## Parts and Styles
     13 - `LV_PART_MAIN` Only `arc_width` is used to set the width of the color wheel
     14 - `LV_PART_KNOB` A rectangle (or circle) drawn on the current value. It uses all the rectangle like style properties and padding to make it larger than the width of the arc.
     15 
     16 ## Usage
     17 
     18 ### Create a color wheel
     19 
     20 `lv_colorwheel_create(parent, knob_recolor)` creates a new color wheel. With `knob_recolor=true` the knob's background color will be set to the current color.
     21 
     22 ### Set color
     23 
     24 The color can be set manually with `lv_colorwheel_set_hue/saturation/value(colorwheel, x)` or all at once with `lv_colorwheel_set_hsv(colorwheel, hsv)` or `lv_colorwheel_set_color(colorwheel, rgb)`
     25 
     26 ### Color mode
     27 
     28 The current color mode can be manually selected with `lv_colorwheel_set_mode(colorwheel, LV_COLORWHEEL_MODE_HUE/SATURATION/VALUE)`.
     29 
     30 The color mode can be fixed (so as to not change with long press) using `lv_colorwheel_set_mode_fixed(colorwheel, true)`
     31 
     32 ## Events
     33 - `LV_EVENT_VALUE_CHANGED` Sent if a new color is selected.
     34 
     35 Learn more about [Events](/overview/event).
     36 
     37 ## Keys
     38 - `LV_KEY_UP`, `LV_KEY_RIGHT` Increment the current parameter's value by 1
     39 - `LV_KEY_DOWN`, `LV_KEY_LEFT` Decrement the current parameter's value by 1
     40 - `LV_KEY_ENTER` A long press will show the next mode. Double click to reset the current parameter.
     41 
     42 Learn more about [Keys](/overview/indev).
     43 
     44 ## Example
     45 
     46 ```eval_rst
     47 
     48 .. include:: ../../../examples/widgets/colorwheel/index.rst
     49 
     50 ```
     51 
     52 ## API
     53 
     54 ```eval_rst
     55 
     56 .. doxygenfile:: lv_colorwheel.h
     57   :project: lvgl
     58 
     59 ```