There are two types of color constants: one that is an index into a table holding a palette of theme colors, and one that is just a color.

Indexed colors

These are the theme colors plus CUSTOM_COLOR, and they can be changed with the function lcd.setColor(color_index, color). Please note: if an indexed color is changed, then it changes everywhere that it is used. For the theme colors, this is not only in other widgets, but everywhere throughout the radio's user interface!

• COLOR_THEME_PRIMARY1

• COLOR_THEME_PRIMARY2

• COLOR_THEME_PRIMARY3

• COLOR_THEME_SECONDARY1

• COLOR_THEME_SECONDARY2

• COLOR_THEME_SECONDARY3

• COLOR_THEME_FOCUS

• COLOR_THEME_EDIT

• COLOR_THEME_ACTIVE

• COLOR_THEME_WARNING

• COLOR_THEME_DISABLED

• CUSTOM_COLOR

Literal colors

These color constants cannot be changed:

• BLACK

• WHITE

• LIGHTWHITE

• YELLOW

• BLUE

• DARKBLUE

• GREY

• DARKGREY

• LIGHTGREY

• RED

• DARKRED

• GREEN

• DARKGREEN

• LIGHTBROWN

• DARKBROWN

• BRIGHTGREEN

• ORANGE

Deprecated color constants

These should no longer be used, but they are included for backwards compatibility. The old OpenTX API had a large number of indexed theme colors, and these have been mapped to the new theme colors as follows:

• ALARM_COLOR -> COLOR_THEME_WARNING

• BARGRAPH_BGCOLOR -> COLOR_THEME_SECONDARY3

• BARGRAPH1_COLOR -> COLOR_THEME_SECONDARY1

• BARGRAPH2_COLOR -> COLOR_THEME_SECONDARY2

• CURVE_AXIS_COLOR -> COLOR_THEME_SECONDARY2

• CURVE_COLOR -> COLOR_THEME_SECONDARY1

• CURVE_CURSOR_COLOR -> COLOR_THEME_WARNING

• HEADER_BGCOLOR -> COLOR_THEME_FOCUS

• HEADER_COLOR -> COLOR_THEME_SECONDARY1

• HEADER_CURRENT_BGCOLOR -> COLOR_THEME_FOCUS

• HEADER_ICON_BGCOLOR -> COLOR_THEME_SECONDARY1

• LINE_COLOR -> COLOR_THEME_PRIMARY3

• MAINVIEW_GRAPHICS_COLOR -> COLOR_THEME_SECONDARY1

• MAINVIEW_PANES_COLOR -> COLOR_THEME_PRIMARY2

• MENU_TITLE_BGCOLOR -> COLOR_THEME_SECONDARY1

• MENU_TITLE_COLOR -> COLOR_THEME_PRIMARY2

• MENU_TITLE_DISABLE_COLOR -> COLOR_THEME_PRIMARY3

• OVERLAY_COLOR -> COLOR_THEME_PRIMARY1

• SCROLLBOX_COLOR -> COLOR_THEME_SECONDARY3

• TEXT_BGCOLOR -> COLOR_THEME_SECONDARY3

• TEXT_COLOR -> COLOR_THEME_SECONDARY1

• TEXT_DISABLE_COLOR -> COLOR_THEME_DISABLED

• TEXT_INVERTED_BGCOLOR -> COLOR_THEME_FOCUS

• TEXT_INVERTED_COLOR -> COLOR_THEME_PRIMARY2

• TITLE_BGCOLOR -> COLOR_THEME_SECONDARY1

• TRIM_BGCOLOR -> COLOR_THEME_FOCUS

• TRIM_SHADOW_COLOR -> COLOR_THEME_PRIMARY1

• WARNING_COLOR -> COLOR_THEME_WARNING

• Key Events

• Touch Events

• Flags and Patterns

• Colors

• Screen size

• CHAR_RIGHT

• CHAR_LEFT

• CHAR_UP

• CHAR_DOWN

• CHAR_DELTA

• CHAR_STICK

• CHAR_POT

• CHAR_SLIDER

• CHAR_SWITCH

• CHAR_TRIM

• CHAR_INPUT

• CHAR_FUNCTION

• CHAR_CYC

• CHAR_TRAINER

• CHAR_CHANNEL

• CHAR_TELEMETRY

• CHAR_LUA

For detailed function explanation see Logiacal Switches functions in EdgeTX manual.

• FUNC_OVERRIDE_CHANNEL

• FUNC_TRAINER

• FUNC_INSTANT_TRIM

• FUNC_RESET

• FUNC_SET_TIMER

• FUNC_ADJUST_GVAR

• FUNC_VOLUME

• FUNC_SET_FAILSAFE

• FUNC_RANGECHECK

• FUNC_BIND

• FUNC_PLAY_SOUND

• FUNC_PLAY_TRACK

• FUNC_PLAY_VALUE

• FUNC_PLAY_SCRIPT

• FUNC_RESERVE5

• FUNC_BACKGND_MUSIC

• FUNC_BACKGND_MUSIC_PAUSE

• FUNC_VARIO

• FUNC_HAPTIC

• FUNC_LOGS

• FUNC_BACKLIGHT

• FUNC_SCREENSHOT

• FUNC_RACING_MODE

• FUNC_DISABLE_TOUCH

lcd.drawText Flags

lcd drawing functions flags on B&W LCD radios

lcd.drawLine function patterns

There are several option types that can be specified in the widget options table, which are exposed to the user via the Widget Settings menu.

Example

-- Create a table with default options
-- Options can be changed by the user from the Widget Settings menu
-- Notice that each line is a table inside { }
local options = {
  { "Source", SOURCE, 1 },
  -- BOOL is actually not a boolean, but toggles between 0 and 1
  { "Boolean", BOOL, 1 },
  { "Value", VALUE, 1, 0, 10},
  { "Color", COLOR, ORANGE },
  { "Text", STRING, "Max8chrs" },
  { "File", FILE, "default", "PATH" }
}

The following touch events are passed in the event argument to the widget script refresh function (when in full screen mode), just like the key events. The following touch events are provided:

In addition to the above touch events a touchState table is passed to refresh with the following addional data fields:

Notes:

• touchState is nil if event is not a touch event. This can be used to test if we have a touch event or a key event.

  • Since Lua evaluates a nil value to false and everything else to true:

  • if touchState then we have a touch event.

• x, y are present for all touch events.

• startX, startY, slideX, slideY are only present with EVT_TOUCH_SLIDE.

• swipeUp / swipeDown / swipeLeft / swipeRight may be present only withEVT_TOUCH_SLIDE.

• tapCount is zero for anything but EVT_TOUCH_TAP.