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:
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