hrishikesh-coder/bangla_keyboard

How hrishikesh-coder/bangla_keyboard works

Shobdomala is a Windows system-wide Bengali IME: a user types Roman keys in a focused application, the global hook captures them, and the active input mode produces Bengali text that is injected back into that application. Phonetic mode tokenizes and context-resolves candidates before Unicode composition; fixed-layout mode maps keys directly. The product also supports candidate selection, prediction/correction, macros, special characters, settings, and UI controls. Some subsystem links follow README documentation or declarations because their implementation excerpts were not sampled.

Main entry points: KeyboardHook.cpp Keyboard hook · main.cpp Application setup · PhoneticEngine.cpp Phonetic engine · CandidateResolver.cpp Candidate resolver

Components 26

Input capture

Keyboard hook src/native/KeyboardHook.cpp
Roman input buffer src/core/InputBuffer.cpp
Mode and shortcuts src/native/KeyboardState.cpp

Transliteration engine

Phonetic engine src/core/PhoneticEngine.cpp
Longest-match tokenizer src/core/Tokenizer.cpp
Context analysis src/core/ContextAnalyzer.cpp
Symbol rules src/core/SymbolTable.cpp
Word exceptions src/core/ExceptionDictionary.cpp
Unicode composer src/core/UnicodeComposer.cpp
Fixed layout src/core/FixedLayoutEngine.cpp
Special characters src/core/SpecialCharPicker.cpp

Typing assistance

Word dictionary src/core/WordDictionary.cpp
Candidate resolver src/core/CandidateResolver.cpp
Suggestion policy src/core/SuggestionPolicy.cpp
N-gram model src/core/NgramModel.cpp
User dictionary src/core/UserDictionary.cpp
Macro engine src/core/MacroEngine.cpp

User interface

Candidate window src/ui/CandidateWindow.cpp
Tray controls src/ui/TrayIcon.cpp
On-screen keyboard src/ui/OnScreenKeyboard.cpp
Macro dialog src/ui/MacroDialog.cpp

Windows integration

Application setup src/main.cpp
Settings src/native/Settings.cpp
Unicode injector src/native/InputInjector.cpp

Other components

Typist
Focused app

Connections 31

Typist → Keyboard hook: presses keys
Keyboard hook → Roman input buffer: buffers input
Keyboard hook → Mode and shortcuts: checks mode
Keyboard hook → Phonetic engine: requests composition
Keyboard hook → Fixed layout: maps keys
Keyboard hook → Special characters: opens picker
Phonetic engine → Longest-match tokenizer: tokenizes
Phonetic engine → Context analysis: analyzes context
Phonetic engine → Symbol rules: looks up rules
Phonetic engine → Word exceptions: checks overrides
Phonetic engine → Unicode composer: composes text
Application setup → Phonetic engine: loads rules
Application setup → Fixed layout: loads layout
Keyboard hook → Candidate window: updates display
Candidate window → Keyboard hook: selects candidate
Keyboard hook → Word dictionary: queries words
Keyboard hook → Candidate resolver: resolves candidates
Application setup → Candidate resolver: configures resolver
Candidate resolver → Word dictionary: looks up words
Keyboard hook → Suggestion policy: requests suggestions
Suggestion policy → N-gram model: scores context
Keyboard hook → User dictionary: records corrections
Keyboard hook → Macro engine: expands shortcut
Application setup → Settings: loads and saves
Application setup → Keyboard hook: installs hook
Application setup → Tray controls: initializes controls
Application setup → On-screen keyboard: initializes keyboard
Application setup → Macro dialog: initializes dialog
Keyboard hook → Unicode injector: injects composed text
Unicode injector → Focused app: sends Unicode
Typist → Focused app: types in

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Drawn by GitDiagram on September 27, 2026 from the repository's file tree, README and source files. Read as Markdown ·