Component:Canvas

Component image 

Canvas component as seen in the Scene Inspector

The Canvas component is the starting point for anything based on UIX. It provides the bounds of the UI and controls how users can interact with it.

When updating certain things on the canvas, you may need to duplicate the entire Slot to get the canvas (and any other UIX elements and slots under that canvas) to work again. The specifics for this canvas component that may need to force recalculation are as follows:

• DefaultCulling: Especially for rendering the back side of the canvas.

Fields

Name	Type	Description
persistent	Bool	Determines whether or not this item will be saved to the server.
UpdateOrder	Int	Controls the order in which this component is updated.
Enabled	Bool	Controls whether or not this component is enabled.
Size	Float2	The dimensions of the canvas. At normal scale, this is equivalent to meters
EditModeOnly	Bool	This makes this component only editable in Edit Mode
AcceptRemoteTouch	Bool	Makes the canvas accepts laser touches
AcceptPhysicalTouch	Bool	Makes the canvas accepts direct touches
AcceptExistingTouch	Bool	If this canvas is already being touched (physically or remotely), accept the input
HighPriorityIntegration	Bool	Prioritizes the procedural meshes in the queue for this component
IgnoreTouchesFromBehind	Bool	Makes the canvas ignore all touches from behind
BlockAllInteractions	Bool	Prevents any interaction if enabled
LaserPassThrough	Bool	Allows the laser to go through the canvas
PixelScale	Float	Sets the pixel scale for this canvas and its contents
UnitScale	Float	Scales the contents of this canvas, higher number makes the contents smaller
_rootRect	RectTransform	Internal - The root rect of this canvas
Collider	BoxCollider	The collider that receives touches from this canvas
DefaultCulling	Culling	Culling for this canvas
_colliderSize	field drive of Float3	Internal - Takes in a box collider and uses it for the canvas
_colliderOffset	field drive of Float3	Internal - Offsets this box collider for this canvas
StartingOffset	Int	The visibility order of rendering this canvas (lower number gets drawn over higher numbers)
StartingMaskDepth	Int	Masking layer for the canvas

Usage

This component is needed for UIX, without it, your other components that relay on UIX, canvas, elements, and rects will not work as expected. Using a canvas not only organizes your other components, it renders them and makes them usable and intractable.

Examples

Here is a video from ProbablePrime's tutorial on canvases:

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Related Components

When a child slot is created when under a Slot that has a canvas component, the new child slot will automatically create a RectTransform component.