CustomTextStyle class
A custom text style, for which you can specify the processing of attributes of the tag.
Example:
StyledText(
text: 'Text with custom <color text="#ff5500">color</color> text.',
styles: {
'color': CustomTextStyle(
baseStyle: TextStyle(fontStyle: FontStyle.italic),
parse: (baseStyle, attributes) {
if (attributes.containsKey('text') &&
(attributes['text'].substring(0, 1) == '#') &&
attributes['text'].length >= 6) {
final String hexColor = attributes['text'].substring(1);
final String alphaChannel = (hexColor.length == 8) ? hexColor.substring(6, 8) : 'FF';
final Color color = Color(int.parse('0x$alphaChannel' + hexColor.substring(0, 6)));
return baseStyle.copyWith(color: color);
} else {
return baseStyle;
}
}),
},
)
- Annotations
Constructors
- CustomTextStyle({required CustomTextStyleCallback parse, TextStyle? baseStyle})
Properties
- background → Paint?
-
The paint drawn as a background for the text.
no setterinherited
- backgroundColor → Color?
-
The color to use as the background for the text.
no setterinherited
- baseStyle → TextStyle?
-
Basic text style.
finalinherited
- color → Color?
-
The color to use when painting the text.
no setterinherited
- debugLabel → String?
-
A human-readable description of this text style.
no setterinherited
- decoration → TextDecoration?
-
The decorations to paint near the text (e.g., an underline).
no setterinherited
- decorationColor → Color?
-
The color in which to paint the text decorations.
no setterinherited
- decorationStyle → TextDecorationStyle?
-
The style in which to paint the text decorations (e.g., dashed).
no setterinherited
- decorationThickness → double?
-
The thickness of the decoration stroke as a multiplier of the thickness
defined by the font.
no setterinherited
- fontFamily → String?
-
The name of the font to use when painting the text (e.g., Roboto).
no setterinherited
-
fontFamilyFallback
→ List<
String> ? -
The ordered list of font families to fall back on when a glyph cannot be
found in a higher priority font family.
no setterinherited
-
fontFeatures
→ List<
FontFeature> ? -
A list of
FontFeature
s that affect how the font selects glyphs.no setterinherited - fontSize → double?
-
The size of fonts (in logical pixels) to use when painting the text.
no setterinherited
- fontStyle → FontStyle?
-
The typeface variant to use when drawing the letters (e.g., italics).
no setterinherited
-
fontVariations
→ List<
FontVariation> ? -
A list of
FontVariation
s that affect how a variable font is rendered.finalinherited - fontWeight → FontWeight?
-
The typeface thickness to use when painting the text (e.g., bold).
no setterinherited
- foreground → Paint?
-
The paint drawn as a foreground for the text.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- height → double?
-
The height of this text span, as a multiple of the font size.
no setterinherited
- inherit → bool
-
Whether null values in this TextStyle can be replaced with their value
in another TextStyle using merge.
no setterinherited
- leadingDistribution → TextLeadingDistribution?
-
How the vertical space added by the height multiplier should be
distributed over and under the text.
no setterinherited
- letterSpacing → double?
-
The amount of space (in logical pixels) to add between each letter.
A negative value can be used to bring the letters closer.
no setterinherited
- locale → Locale?
-
The locale used to select region-specific glyphs.
no setterinherited
- overflow → TextOverflow?
-
How visual text overflow should be handled.
no setterinherited
- parse → CustomTextStyleCallback
-
Called when parsing the attributes of a tag.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
shadows
→ List<
Shadow> ? -
A list of
Shadow
s that will be painted underneath the text.no setterinherited - style → TextStyle
-
no setter
- textBaseline → TextBaseline?
-
The common baseline that should be aligned between this text span and its
parent text span, or, for the root text spans, with the line box.
no setterinherited
- wordSpacing → double?
-
The amount of space (in logical pixels) to add at each sequence of
white-space (i.e. between each word). A negative value can be used to
bring the words closer.
no setterinherited
Methods
-
apply(
{Color? color, Color? backgroundColor, TextDecoration? decoration, Color? decorationColor, TextDecorationStyle? decorationStyle, double decorationThicknessFactor = 1.0, double decorationThicknessDelta = 0.0, String? fontFamily, List< String> ? fontFamilyFallback, double fontSizeFactor = 1.0, double fontSizeDelta = 0.0, int fontWeightDelta = 0, FontStyle? fontStyle, double letterSpacingFactor = 1.0, double letterSpacingDelta = 0.0, double wordSpacingFactor = 1.0, double wordSpacingDelta = 0.0, double heightFactor = 1.0, double heightDelta = 0.0, TextBaseline? textBaseline, TextLeadingDistribution? leadingDistribution, Locale? locale, List<Shadow> ? shadows, List<FontFeature> ? fontFeatures, TextOverflow? overflow}) → TextStyle -
Creates a copy of this text style replacing or altering the specified
properties.
inherited
-
compareTo(
TextStyle other) → RenderComparison -
Describe the difference between this style and another, in terms of how
much damage it will make to the rendering.
inherited
-
configure(
Map< String?, String?> ? attributes) → void -
copyWith(
{bool? inherit, Color? color, Color? backgroundColor, String? fontFamily, List< String> ? fontFamilyFallback, double? fontSize, FontWeight? fontWeight, FontStyle? fontStyle, double? letterSpacing, double? wordSpacing, TextBaseline? textBaseline, double? height, TextLeadingDistribution? leadingDistribution, Locale? locale, Paint? foreground, Paint? background, List<Shadow> ? shadows, List<FontFeature> ? fontFeatures, TextDecoration? decoration, Color? decorationColor, TextDecorationStyle? decorationStyle, double? decorationThickness, String? debugLabel, TextOverflow? overflow}) → TextStyle -
Creates a copy of this text style but with the given fields replaced with
the new values.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties, {String prefix = ''}) → void -
Adds all properties prefixing property names with the optional
prefix
.inherited -
getParagraphStyle(
{TextAlign? textAlign, TextDirection? textDirection, double textScaleFactor = 1.0, String? ellipsis, int? maxLines, TextHeightBehavior? textHeightBehavior, Locale? locale, String? fontFamily, double? fontSize, FontWeight? fontWeight, FontStyle? fontStyle, double? height, StrutStyle? strutStyle}) → ParagraphStyle -
The style information for paragraphs, encoded for use by
dart:ui
.inherited -
getTextStyle(
{double textScaleFactor = 1.0}) → TextStyle -
The style information for text runs, encoded for use by
dart:ui
.inherited -
merge(
TextStyle? other) → TextStyle -
Returns a new text style that is a combination of this style and the given
other
style.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringShort(
) → String -
A brief description of this object, usually just the runtimeType and the
hashCode.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited