textmode.js / layering / TextmodeLayerManager

Class: TextmodeLayerManager

Manages all user-defined layers within a Textmodifier in addition to the base layer.

Responsibilities:

• Managing the collection of user layers (add, remove, move, swap)
• Coordinating layer rendering and compositing
• Owning the global post-processing pipeline (global filters + present to screen)

The instance of this class can be accessed via Textmodifier.layers.

The base layer is not part of the public layer stack, but is instead managed internally.

Implements

• ILayerManager

Accessors

all

Get Signature

get all(): readonly TextmodeLayer[];

Get all user layers as a readonly array.

Returns

readonly TextmodeLayer[]

Implementation of

ILayerManager.all

---

base

Get Signature

get base(): TextmodeLayer;

The base layer that is always rendered at the bottom of the layer stack. This layer represents the main drawing content before any user layers are composited.

Returns

TextmodeLayer

Implementation of

ILayerManager.base

---

filters

Get Signature

get filters(): TextmodeFilterManager;

Returns

TextmodeFilterManager

---

resultFramebuffer

Get Signature

get resultFramebuffer(): TextmodeFramebuffer;

The framebuffer containing the final composited result after all layers and filters have been applied.

Returns

TextmodeFramebuffer

Implementation of

ILayerManager.resultFramebuffer

Methods

add()

add(options): TextmodeLayer;

Add a new layer to the manager.

Parameters

Parameter	Type	Description
options	TextmodeLayerOptions	Layer configuration options.

Returns

TextmodeLayer

The newly added layer.

Implementation of

ILayerManager.add

---

clear()

clear(): void;

Remove and dispose all user layers (keeps base layer intact).

Returns

void

Implementation of

ILayerManager.clear

---

move()

move(layer, newIndex): void;

Move a layer to a new index in the layer stack.

Parameters

Parameter	Type	Description
layer	TextmodeLayer	The layer to move.
newIndex	number	The new index for the layer.

Returns

void

Implementation of

ILayerManager.move

---

remove()

remove(layer): void;

Remove a layer from the manager.

Parameters

Parameter	Type	Description
layer	TextmodeLayer	The layer to remove.

Returns

void

Implementation of

ILayerManager.remove

---

swap()

swap(layerA, layerB): void;

Swap the order of two layers if they exist in the same collection.

Parameters

Parameter	Type	Description
layerA	TextmodeLayer	The first layer to swap.
layerB	TextmodeLayer	The second layer to swap.

Returns

void

Implementation of

ILayerManager.swap