59 lines
2.2 KiB
Markdown
59 lines
2.2 KiB
Markdown
# Scrollbar : VisualElement
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A scrollbar element that can be attached to other elements to control their scroll properties
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## Properties
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|Property|Type|Default|Description|
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|value|number|0|Current scroll value
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|min|number|0|Minimum scroll value
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|max|number|100|Maximum scroll value
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|step|number|1|Step size for scroll operations
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|dragMultiplier|number|1|How fast the scrollbar moves when dragging
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|symbol|string|"|" Symbol used for the scrollbar handle
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|backgroundSymbol|string|"\127"|Symbol used for the scrollbar background
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|symbolBackgroundColor|color|black|Background color of the scrollbar handle
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|backgroundSymbol|string|"\127"|Symbol used for the scrollbar background
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|attachedElement|table?|nil|The element this scrollbar is attached to
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|attachedProperty|string?|nil|The property being controlled
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|minValue|number|function|0|Minimum value or function that returns it
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|maxValue|number|function|100|Maximum value or function that returns it
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|orientation|string|vertical|Orientation of the scrollbar ("vertical" or "horizontal")
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|handleSize|number|2|Size of the scrollbar handle in characters
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## Functions
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|Method|Returns|Description|
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|[Scrollbar:attach](#scrollbar-attach)|Scrollbar|Attaches the scrollbar to an element's property
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|[Scrollbar:updateAttachedElement](#scrollbar-updateattachedelement)|Scrollbar|Updates the attached element's property based on the scrollbar value
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## Protected Functions
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|Method|Returns|Description|
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|Scrollbar:init|Scrollbar|Initializes the Scrollbar instance
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|Scrollbar:mouse_click|boolean|Handles mouse click events
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|Scrollbar:mouse_drag|boolean|Handles mouse drag events
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|Scrollbar:mouse_scroll|boolean|Handles mouse scroll events
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|Scrollbar:render|-|Renders the scrollbar
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## Scrollbar:attach(element, config)
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Attaches the scrollbar to an element's property
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### Parameters
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* `element` `BaseElement` The element to attach to
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* `config` `table` Configuration {property = "propertyName", min = number|function, max = number|function}
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### Returns
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* `Scrollbar` `self` The scrollbar instance
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## Scrollbar:updateAttachedElement()
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Updates the attached element's property based on the scrollbar value
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### Returns
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* `Scrollbar` `self` The scrollbar instance
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