GlyphRenderer class

Renders characters to a CanvasTerminal using bitmap glyphs. The renderer must be supplied with a mapping between supported characters and the glyphs. This renderer works best when supplied with an appropriate pixel density scale.

Inheritance

Constructors

GlyphRenderer(String glyphSrc, Map<int, int> _charToGlyphIndex, Vec2 _charSize, CanvasRenderingContext2D context, int scale)
Create a new GlyphRenderer using the given glyphSrc path or URL to the glyph sheet, a Map of character codes to glyph indices in the glyph sheet, and the size of a single glyph in pixels. Also provide a canvas 2D rendering context and a scale value for better rendering on high-density displays (e.g., Apple Retina screens).
GlyphRenderer.dosVga437(CanvasRenderingContext2D context, [int? scale])
Create a GlyphRenderer using the default built-in Code Page 437 glyph set
factory

Properties

charHeight → int
The height in pixels of a single rendered character (before scaling)
no setteroverride
charWidth → int
The width in pixels of a single rendered character (before scaling)
no setteroverride
ctx → CanvasRenderingContext2D
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
loaded → Future<void>
Returns a Future that resolves whenever the underlying assets used by the renderer are fully loaded and the renderer is actually ready to render. Calling renderChar before waiting for this future to resolve may result in undefined behavior.
no setteroverride
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
scale → int
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
renderChar(int x, int y, Char char) → void
Render the given Char at column x, row y in a Terminal
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

dosVga437CharHeight → const int
dosVga437CharWidth → const int
dosVga437GlyphsSrc → const String
Default set of glyphs covering the code page 437 content.