TextServer API overview

Enumerations:

enum Direction:

• DIRECTION_AUTO = 0 --- Text direction is determined based on contents and current locale.
• DIRECTION_LTR = 1 --- Text is written from left to right.
• DIRECTION_RTL = 2 --- Text is written from right to left.

enum Orientation:

• ORIENTATION_HORIZONTAL = 0 --- Text is written horizontally.
• ORIENTATION_VERTICAL = 1 --- Left to right text is written vertically from top to bottom.

Right to left text is written vertically from bottom to top.

enum JustificationFlag:

• JUSTIFICATION_NONE = 0 --- Do not justify text.
• JUSTIFICATION_KASHIDA = 16 --- Justify text by adding and removing kashidas.
• JUSTIFICATION_WORD_BOUND = 32 --- Justify text by changing width of the spaces between the words.
• JUSTIFICATION_TRIM_EDGE_SPACES = 64 --- Remove trailing and leading spaces from the justified text.
• JUSTIFICATION_AFTER_LAST_TAB = 128 --- Only apply justification to the part of the text after the last tab.

enum LineBreakFlag:

• BREAK_NONE = 0 --- Do not break the line.
• BREAK_MANDATORY = 1 --- Break the line at the line mandatory break characters (e.g. "\n").
• BREAK_WORD_BOUND = 2 --- Break the line between the words.
• BREAK_GRAPHEME_BOUND = 4 --- Break the line between any unconnected graphemes.

enum GraphemeFlag:

• GRAPHEME_IS_RTL = 2 --- Grapheme is part of right-to-left or bottom-to-top run.
• GRAPHEME_IS_VIRTUAL = 4 --- Grapheme is not part of source text, it was added by justification process.
• GRAPHEME_IS_SPACE = 8 --- Grapheme is whitespace.
• GRAPHEME_IS_BREAK_HARD = 16 --- Grapheme is mandatory break point (e.g. "\n").
• GRAPHEME_IS_BREAK_SOFT = 32 --- Grapheme is optional break point (e.g. space).
• GRAPHEME_IS_TAB = 64 --- Grapheme is the tabulation character.
• GRAPHEME_IS_ELONGATION = 128 --- Grapheme is kashida.

enum Hinting:

• HINTING_NONE = 0 --- Disables font hinting (smoother but less crisp).
• HINTING_LIGHT = 1 --- Use the light font hinting mode.
• HINTING_NORMAL = 2 --- Use the default font hinting mode (crisper but less smooth).

enum Feature:

• FEATURE_BIDI_LAYOUT = 1 --- TextServer supports bidirectional layouts.
• FEATURE_VERTICAL_LAYOUT = 2 --- TextServer supports vertical layouts.
• FEATURE_SHAPING = 4 --- TextServer supports complex text shaping.
• FEATURE_KASHIDA_JUSTIFICATION = 8 --- TextServer supports justification using kashidas.
• FEATURE_BREAK_ITERATORS = 16 --- TextServer supports complex line/word breaking rules (e.g. dictionary based).
• FEATURE_FONT_SYSTEM = 32 --- TextServer supports loading system fonts.
• FEATURE_USE_SUPPORT_DATA = 64