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Basalt2/docs/references/elements/VisualElement.md
2025-02-24 19:52:39 +00:00

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VisualElement : BaseElement

This is the visual element class. It serves as the base class for all visual UI elements and provides core functionality for positioning, sizing, colors, and rendering.

Properties

Property Type Default Description
x number 1 The horizontal position relative to parent
y number 1 The vertical position relative to parent
z number 1 The z-index for layering elements
width number 1 The width of the element
height number 1 The height of the element
background color black The background color
foreground color white The text/foreground color
clicked boolean false Whether the element is currently clicked
hover boolean false Whether the mouse is currently hover over the element (Craftos-PC only)
backgroundEnabled boolean true Whether to render the background
focused boolean false Whether the element has input focus
visible boolean true Whether the element is visible
ignoreOffset boolean false Whether to ignore the parent's offset

Combined Properties

Name Properties Description
position x y Combined x, y position
size width height Combined width, height
color foreground background Combined foreground, background colors

Events

Event Parameters Description
onClick button, x, y Fired on mouse click
onMouseUp button, x, y Fired on mouse button release
onRelease button, x, y Fired when mouse leaves while clicked
onDrag button, x, y Fired when mouse moves while clicked
onScroll direction, x, y Fired on mouse scroll
onEnter - Fired when mouse enters element
onLeave - Fired when mouse leaves element
onFocus - Fired when element receives focus
onBlur - Fired when element loses focus
onKey key Fired on key press
onKeyUp key Fired on key release
onChar char Fired on character input

Functions

Method Returns Description
VisualElement.new VisualElement Creates a new visual element
VisualElement:blit - Draws text with both colors
VisualElement:blur - Handles a blur event
VisualElement:calculatePosition -
VisualElement:focus - Handles a focus event
VisualElement:getAbsolutePosition - Returns the absolute position of the element
VisualElement:getRelativePosition number, Returns the relative position of the element
VisualElement:init - Initializes a new visual element with properties
VisualElement:isInBounds boolean Checks if point is within bounds
VisualElement:mouse_click boolean Handles a mouse click event
VisualElement:mouse_drag -
VisualElement:mouse_move -
VisualElement:mouse_release - Handles a mouse release event
VisualElement:mouse_scroll -
VisualElement:mouse_up boolean Handles a mouse up event
VisualElement:multiBlit - Multi-character drawing with colors
VisualElement:render - Renders the element
VisualElement:setCursor - Sets the cursor position
VisualElement:textBg - Draws text with background color
VisualElement:textFg - Draws text with foreground color

VisualElement.new(props, basalt)

Creates a new VisualElement instance

Parameters

  • props table The properties to initialize the element with
  • basalt table The basalt instance

Returns

  • VisualElement object The newly created VisualElement instance

Usage

local element = VisualElement.new("myId", basalt)

VisualElement:blit(x, y, text, fg, bg)

Draws text with both foreground and background colors

Parameters

  • x number The x position to draw
  • y number The y position to draw
  • text string The text char to draw
  • fg string The foreground color
  • bg string The background color

VisualElement:blur()

Handles a blur event

VisualElement:calculatePosition()

VisualElement:focus()

Handles a focus event

VisualElement:getAbsolutePosition(x?, y?)

Returns the absolute position of the element or the given coordinates.

Parameters

  • x (optional) number x position
  • y (optional) number y position

VisualElement:getRelativePosition(x?, y?)

Returns the relative position of the element or the given coordinates.

Parameters

  • x (optional) number x position
  • y (optional) number y position

Returns

  • nil nil nil

VisualElement:init(props, basalt)

Initializes the VisualElement instance

Parameters

  • props table The properties to initialize the element with
  • basalt table The basalt instance

VisualElement:isInBounds(x, y)

Checks if the specified coordinates are within the bounds of the element

Parameters

  • x number The x position to check
  • y number The y position to check

Returns

  • boolean isInBounds Whether the coordinates are within the bounds of the element

VisualElement:mouse_click(button, x, y)

Handles a mouse click event

Parameters

  • button number The button that was clicked
  • x number The x position of the click
  • y number The y position of the click

Returns

  • boolean clicked Whether the element was clicked

VisualElement:mouse_drag()

VisualElement:mouse_move()

VisualElement:mouse_release(button, x, y)

Handles a mouse release event

Parameters

  • button number The button that was released
  • x number The x position of the release
  • y number The y position of the release

VisualElement:mouse_scroll()

VisualElement:mouse_up(button, x, y)

Handles a mouse up event

Parameters

  • button number The button that was released
  • x number The x position of the release
  • y number The y position of the release

Returns

  • boolean release Whether the element was released on the element

VisualElement:multiBlit(x, y, width, height, text, fg, bg)

Draws multiple characters at once with colors

Parameters

  • x number The x position to draw
  • y number The y position to draw
  • width number The width of the area to draw
  • height number The height of the area to draw
  • text string The text to draw
  • fg string The foreground color
  • bg string The background color

VisualElement:render()

Renders the element

Sets the cursor position

Parameters

  • x number The x position of the cursor
  • y number The y position of the cursor
  • blink boolean Whether the cursor should blink

VisualElement:textBg(x, y, text, bg)

Draws text with background color

Parameters

  • x number The x position to draw
  • y number The y position to draw
  • text string The text char to draw
  • bg color The background color

VisualElement:textFg(x, y, text, fg)

Draws text with foreground color

Parameters

  • x number The x position to draw
  • y number The y position to draw
  • text string The text char to draw
  • fg color The foreground color