Class: TextProperties

TextProperties(text)

new TextProperties(text)

TextPropertiesとはテキストを保存する物です、テキストだけではなく、スタイルや他の情報も保存されます。 Drawableですので、drawOnContextがあります。Layer.drawにも対応します。 TextProperties is a class to show text as drawable, it stores font size, color, etc. The coordinate is normally handled by MessageLayer.
Parameters:
Name Type Description
text string
Implements:

Extends

Members

(constant) initializer :string

The name of constructor the class, will be used to restore the object. The constructor has to be accessable via
window[initializer]
Type:
  • string
Overrides:
Implements:

needRedraw

Properties:
Type Description
boolean
Inherited From:

partialDraw

Properties:
Type Description
boolean
Inherited From:

rect

Properties:
Type Description
Rect
Overrides:

Methods

canDrawPartial() → {boolean}

Can it draw only a certain part? If yes, drawContext will be called with rect, and drawable should draw only in that rect. Drawing less = better performance.
Inherited From:
Returns:
Type
boolean

drawOnContext(context, rect)

Draw on this context. If canDrawPartial is true, this can be called with rect. When it is called with rect, drawable should only draw in the specificed area.
Parameters:
Name Type Description
context CanvasRenderingContext2D
rect Rect In the context's coordinate.
Overrides:

font() → {string}

Returns:
Type
string

frame() → {Rect}

Return the frame, which is the actually area this drawable draws on (including things like shadow). Subclass should override if needed.
Overrides:
Returns:
Type
Rect

measure(context) → {TextMetrics}

Parameters:
Name Type Description
context CanvasRenderingContext2D
Returns:
Type
TextMetrics

objectToBeSerialized(key) → {object|Serializable}

Return an object to be serialized for a specific key.
Parameters:
Name Type Description
key string The key of property to be serialized
Overrides:
Implements:
Returns:
- An object or serializable to be saved for the specific key, return undefined = not to be saved.
Type
object | Serializable