v3.0

Updates:

• Updated Java version to 1.8
• Wrote internal implementation of the library in Kotlin
• Built CI pipeline on GitHub Actions
• Wrote test cases for some classes
• Updated FreeType to version 2.13.0
• Updated HarfBuzz to version 7.3.0
• Updated SheenBidi to version 2.5
• Minor bug fixes and architectural improvements

v2.8

Additions:

• Added seek bar for adjusting justification level in custom text view demo screen

FrameResolver:

• Justification Support: setJustificationEnabled(boolean justificationEnabled), boolean isJustificationEnabled()
• Justification Level: setJustificationLevel(float justificationLevel), float getJustificationLevel()

Typesetter:

• Line Justification: ComposedLine createJustifiedLine(int charStart, int charEnd, float justificationFactor, float justificationWidth)

TTextView:

• Justification Properties: justificationEnabled, justificationLevel

Updates:

• Introduced CaretEdgesBuilder class for generating caret edges from a set of input parameters
• Updated getCaretEdges() method in ShapingResult to base on CaretEdgesBuilder
• Converted TextRun from abstract class to an interface
• Introduced AbstractTextRun class for providing helper implementation of some methods
• Introduced TextRunDrawing interface for separating drawing logic from a TextRun implementation
• Introduced DefaultTextRunDrawing class for reusing drawing logic in a TextRun implementation
• Updated IntrinsicRun class to base on AbstractTextRun
• Removed text drawing support from IntrinsicRun
• Put ReplacementRun related implementation in its own class
• Introduced CaretEdges class in IntrinsicRunSlice to transform the edges of parent run
• Updated draw() method in IntrinsicRunSlice to base on DefaultTextRunDrawing
• Introduced JustifiedRun class to transform an existing text run into a justified one
• Added justification support in LineResolver and TextContainer
• Simplified text frame resolving implementation in FrameResolver

v2.7

Additions

• A new custom text view component based on ScrollView
• Presented Surah Al-Kahf with Tajweed rules in demo project
• Added variation support in text shaping
• Added support for named styles in typeface
• Added support for caching glyph advances during text shaping

Updates

• Fixed an issue related to default palette selection in Typeface
• Broke down Typeface into multiple classes on JNI side
• Introduced RenderableFace class for holding FT_Face in JNI
• Introduced ShapableFace class for holding custom implementation of hb_font in JNI
• Used custom mechanism for handling variation coordinates
• Moved variable font description handling to Java side
• Removed references to NameTable in Typeface class
• Removed suppress warnings of Raw Types in LruCache

v2.6

Updates

• Added actual code of dependent libraries instead of submodules
• Updated the project to use HarfBuzz for text shaping
• Major bug fix related to bounding box calculation

v2.5

Additions

• Added support for color fonts consisting of COLR / CPAL tables
• Covered a color font with palettes in demo project
• Added support for colored and stroked glyphs' caching

Typeface:

• Palette Entry Names: List<String> getPaletteEntryNames()
• Predefined Palettes: List<ColorPalette> getPredefinedPalettes()
• Palette Colors: int[] getAssociatedColors()
• Color Instance: Typeface getColorInstance(int[] colors)

TLabel:

• Rendering Style: fill, fill_stroke, stroke
• Stroke Properties: color, width, cap, join, miter

Updates

• Optimized internal architecture to represent text runs
• Optimized glyph cache for faster access to objects
• Updated free type to version 2.10.4
• Updated sheen bidi to version 2.3

v2.4

Additions

• Added support for variable fonts
• Covered variable fonts in demo project
• Wrote likable label in demo project

FontFile:

• Named Typefaces: List<Typeface> getTypefaces()

Typeface:

• Variation Axes: List<VariationAxis> getVariationAxes()
• Variation Coordinates: float[] getVariationCoordinates()
• Variation Instance: Typeface getVariationInstance(float[] coordinates)

ShapingResult:

• Caret Edges: FloatList getCaretEdges(boolean[] caretStops)

Updates

• Added static constructors in table classes
• Used sheen figure for caret handling
• Updated free type to version 2.10.0

v2.3

Additions

Added @Nullable, @NonNull, @Size and @ColorInt annotations throughout the project

ShapingEngine:

• OpenType Features: setOpenTypeFeatures(Set<OpenTypeFeature> features), Set<OpenTypeFeature> getOpenTypeFeatures()

Typeface:

• Strikeout Properties: int getStrikeoutPosition(), int getStrikeoutThickness()

@IntDef Annotations:

• BidiClass: @Value
• GeneralCategory: @Value
• Script: @Value

Updates

• Implemented character measurement based on caret range distance
• Wrote Precondition class and used it for checking parameter expectations
• Removed custom @Sustain annotation in favour of androidx @Keep annotation
• Replaced array with variable args for creating primitive lists
• Updated SheenFigure to version 1.5

Fixes

• Fixed an issue related to text becoming blank in TLabel widge
• Fixed backward mode glyph run rendering issues
• Fixed backward mode cluster clipping issues
• Fixed equals(Object) implementation of NameTable.Record

v2.2

Additions

BidiClass:

• Enum Values: UAX #44: Bidirectional Class Values
• Unit Testing: Literal Numbers

GeneralCategory:

• Enum Values: UAX #44: General Category Values
• Unit Testing: Literal Numbers

Script:

• Enum Values: UAX #24: PropertyValueAliases.txt
• OpenType Tag: static int getOpenTypeTag(int script)
• Unit Testing: Literal Numbers

CodePoint:

• Bidi Class Property: static int getBidiClass(int codePoint)
• General Category Property: static int getGeneralCategory(int codePoint)
• Script Property: static int getScript(int codePoint)
• Mirroring Property: static int getMirror(int codePoint)

BidiAlgorithm:

• Bidi Classes: IntList getCharBidiClasses()

ScriptClassifier:

• Unicode Standard: UAX #24
• Resolved Scripts: IntList getCharScripts()
• Resolved Runs: Iterable<ScriptRun> getScriptRuns(int charStart, int charEnd)

GlyphRun:

• Cluster Splitting: int getStartExtraLength(), int getEndExtraLength()

Added support for cluster splitting in multiple spans
Wrote an abstract class for testing IntList implementations
Used a dedicated Android.mk file for instrumentation tests

Updates

• Integrated script analysis process of UAX #24 in typesetting
• Made right-to-left glyph drawing with decreasing pen x value in Renderer
• Reduced synthetic methods generation with package access
• Enabled JNI symbols stripping in release mode
• Reduced property methods calling in Renderer
• Used direct field accesses in GlyphRun
• Shortened names of native methods with n prefix
• Refactored names of internal primitive collections
• Updated FreeType to version 2.9.1
• Updated SheenBidi to version 2.1
• Updated SheenFigure to version 1.4

Fixes

• Fixed invalid leading and trailing index issues in GlyphRun
• Fixed accidental deallocation of data in primitive raw list implementations
• Fixed character measurement of backward segments in typesetting
• Fixed cluster map copying issue in GlyphRun
• Fixed redundant type casting warnings in demo project

v2.1

Additions

TypeFamily:

• Style Matching: getTypefaceByStyle(TypeWidth, TypeWeight, TypeSlope)

TypefaceManager:

• Typeface Grouping: getTypeFamily(String familyName)

TextAlignment:

• Natural Alignment: INTRINSIC, EXTRINSIC

GlyphRun:

• Character Group: int getActualClusterStart(int charIndex), int getActualClusterEnd(int charIndex)
• Glyph Group: int getLeadingGlyphIndex(int charIndex), int getTrailingGlyphIndex(int charIndex)
• Hit Testing: float computeCharDistance(int charIndex), int computeNearestCharIndex(float distance)

ComposedLine:

• Hit Testing: float computeCharDistance(int charIndex), int computeNearestCharIndex(float distance)
• Highlighting: float[] computeVisualEdges(int charStart, int charEnd)

CompsedFrame:

• Boundary Properties: originX, originY, width, height
• Hit Testing: int getLineIndexForChar(int charIndex), int getLineIndexForPosition(float x, float y)
• Highlighting: Path generateSelectionPath(int charStart, int charEnd)

TLabel:

• Line Properties: extraLineSpacing, lineHeightMultiplier
• Text Properties: composedFrame, spanned, typesetter
• Hit Testing: int hitTestPosition(float x, float y)

Added FrameResolver class for easier text layout and measurement.

Added support for following CharacterStyle spans without invoking updateDrawState(TextPaint) or updateMeasureState(TextPaint):

• ForegroundColorSpan
• AbsoluteSizeSpan
• RelativeSizeSpan
• ReplacementSpan
• ScaleXSpan
• StyleSpan
• SubscriptSpan
• SuperscriptSpan
• TextAppearanceSpan
• TypefaceSpan

Added support for following ParagraphStyle spans:

• AlignmentSpan
• BulletSpan
• LeadingMarginSpan
• LeadingMarginSpan2
• LineBackgroundSpan
• LineHeightSpan
• QuoteSpan

Updates

• Divided functionality of Typesetter into various logical classes
• Made TypefaceSpan and TypeSizeSpan conform to MetricAffectingSpan for easier span handling
• Updated FreeType to version 2.9
• Updated SheenFigure to version 1.3

Fixes

• Fixed NullPointerException caused by NameTable on older android versions
• Fixed gravity attribute of TLabel with flag format
• Prohibited offsets and advances scaling in Renderer
• Made accidentally publicized method createCompactLine private in Typesetter

v2.0

• Refined architecture of the library
• Added flexible primitive collections
• Exposed essential SFNT tables
• Covered more APIs in demo project