wincalc_engine 0.0.11

Dart FFI bindings to the Windows Calculator engine, providing standard, scientific, and programmer calculator functionality.

0.0.11

Fixed

• Programmer Mode Mod Command Symbol Display
  • Fixed mod command not displaying the % symbol in expression for programmer calculator mode

0.0.10

Added

• Callback Support for Calculator Instance
  • Added calculator_set_callback_user_data() for setting user data pointer passed to all callbacks
  • Added individual callback registration functions:
    • calculator_set_primary_display_callback() - Register primary display update callback
    • calculator_set_is_in_error_callback() - Register error state change callback
    • calculator_set_expression_callback() - Register expression display callback
    • calculator_set_parenthesis_callback() - Register parenthesis count callback
    • calculator_set_no_right_paren_callback() - Register no right parenthesis callback
    • calculator_set_max_digits_callback() - Register max digits reached callback
    • calculator_set_binary_operator_callback() - Register binary operator received callback
    • calculator_set_history_item_added_callback() - Register history item added callback
    • calculator_set_memorized_numbers_callback() - Register memorized numbers callback
    • calculator_set_memory_item_changed_callback() - Register memory item changed callback
    • calculator_set_input_changed_callback() - Register input changed callback
  • Implemented callback mechanism in C++ CalcDisplayImpl class
  • Updated calculator submodule with callback infrastructure

0.0.9

Added

• Bit Position Command Helper Function
  • Added calc_cmd_binpos(int n) FFI function for bit position toggle commands
  • Provides Dart-accessible function for CMD_BINPOS(n) macro (ffigen cannot handle C macro functions)
  • Simplifies bit manipulation operations in programmer mode from Dart code

0.0.8

Changed

• Calculator Submodule Update

  • Updated to forked repository: dongfengweixiao/ms_calculator @ wincalc_engine branch
  • Commit: 210b355 - Includes compiler warning fixes and cross-platform improvements
  • Removes dependency on Microsoft's upstream calculator repository

• Build Configuration Improvements

  • Removed custom src/include directory (Windows compatibility headers no longer needed)
  • Now uses calculator submodule's built-in precompiled header (pch.h)
  • Added Android 15 compatibility support with 16KB page size alignment (-Wl,-z,max-page-size=16384)
  • Added Windows C++ exception handling flag (/EHsc)
  • Cleaner include paths, removed unnecessary parent directory references

• Code Quality Enhancements

  • Fixed UTF-8 conversion warning in wstring_to_utf8() by promoting wchar_t to unsigned int before bit shifting
  • This prevents compiler warning C4333 ("right shift count too large") on Windows where wchar_t is 16-bit

• State Synchronization Improvements

  • Enhanced calculator_send_command() to track angle type changes (DEG/RAD/GRAD commands)
  • Improved calculator_get_word_width() to query actual state from calculator engine instead of cached value
  • Improved calculator_get_angle_type() to query actual state from calculator engine instead of cached value
  • More reliable state tracking across different calculator operations

0.0.7

Changed

• Unit Converter Reorganization

  • Reordered all units to follow logical progression (smallest to largest)
  • Metric units now grouped together before imperial/customary units
  • Consistent ordering across all 12 unit categories
  • All conversions now use automatic bidirectional conversion based on base unit factors

• Enhanced Unit Coverage

  • Data Units: Expanded to include complete range of bit/byte prefixes
    • All decimal prefixes: kilo, mega, giga, tera, peta, exa, zetta, yotta
    • All binary prefixes: kibi, mebi, gibi, tebi, pebi, exbi, zebi, yobi
    • Added: Bits, Nibbles, and all byte variants (KiB, MiB, GiB, TiB, PiB, EiB, ZiB, YiB)
  • Length: Added Angstroms, Nautical miles
  • Weight: Added Carats, Centigrams, Decigrams, Decagrams, Hectograms, Short tons
  • Energy: Added Foot-pounds
  • Speed: Added Centimeters per second

• Whimsical Units (Educational/fun units at end of each category)

  • Length: Paperclips, Hands, Jumbo jets
  • Weight: Snowflakes, Soccer balls, Elephants, Whales
  • Energy: Batteries, Bananas, Slices of cake
  • Area: Hands, Papers, Soccer fields, Castles, Pyeong (Korean/Japanese floor area)
  • Speed: Turtles, Horses, Jets
  • Power: Light bulbs, Horses, Train engines
  • Data: Floppy disks, CDs, DVDs
  • Volume: Coffee cups, Bathtubs, Swimming pools

• Improved Accuracy

  • More precise conversion factors (e.g., US Horsepower vs Metric Horsepower)
  • Properly grouped US and UK cooking measures (teaspoons, tablespoons, etc.)
  • Better unit naming (e.g., "Gallons (US)" vs "Gallons (UK)")

0.0.6

Fixed

• Missing Temperature Unit Conversions
  • Added Fahrenheit to Kelvin conversion (F → K): K = (F + 459.67) / 1.8
  • Added Kelvin to Fahrenheit conversion (K → F): F = K × 1.8 - 459.67
  • Previously, these conversions would fail or return incorrect results
  • Now all 9 possible temperature conversion directions are supported (3 units × 3 units)

0.0.5

Fixed

• Temperature Unit Identity Conversion Bug
  • Added missing identity conversions for temperature units (Celsius→Celsius, Fahrenheit→Fahrenheit, Kelvin→Kelvin)
  • Previously, converting between the same temperature unit would produce incorrect results (e.g., 25°C → 0.015534 instead of 25°C)
  • Now correctly returns the same value when source and target units are identical
  • Example: 100°C now correctly converts to 100°C, 77°F to 77°F, 298K to 298K

0.0.4

Added

Unit Converter Suggested Values Feature

• New API: Suggested Values
  • unit_converter_get_suggested_count() - Get the count of suggested conversion values
  • unit_converter_get_suggested_value() - Get individual suggested value with unit name
  • Suggested values include both common units (cups, pints, ounces) and whimsical units (coffee cups, bathtubs, swimming pools)
  • Example: When converting 1 Liter, returns suggestions like "4.23 US cups", "2.11 US pints", "☕ 4.23 Metric cups"

Fixed

• Unit Name Display Bug
  • Fixed addRatio() function to use complete Unit objects instead of empty ones
  • Added m_unitById mapping to store complete unit information (id, name, abbreviation)
  • Previously suggested values showed numeric values but had empty unit names
  • Now correctly displays: "4.23 Metric cups" instead of "4.23 "

Changed

• Enhanced Unit Converter Data Loader
  • Internal refactor to properly maintain Unit object references
  • Improved conversion ratio mapping with complete Unit metadata

0.0.3

Fixed

• Memory Clear Display Update Issue
  • Fixed calculator_memory_clear_at() not updating the display layer when clearing a memorized number

0.0.2

Added

Programmer Mode Bitwise Operation Features

• New Enum: CalcWordType

  • Added word size type enumeration for programmer mode
  • Supports QWORD (64-bit), DWORD (32-bit), WORD (16-bit), and BYTE (8-bit)
  • Includes fromValue() method for safe enum conversion

• Word Width Management Functions

  • calculator_set_word_width() - Set the current word size for programmer mode
  • calculator_get_word_width() - Get the current word size setting
  • Word width commands (CMD_QWORD, CMD_DWORD, CMD_WORD, CMD_BYTE) now properly tracked

• Carry Flag Management Functions

  • calculator_set_carry_flag() - Set the carry flag for rotate-through-carry operations
  • calculator_get_carry_flag() - Get the current carry flag value
  • Carry flag is automatically clamped to 0 or 1

• Enhanced Bitwise Operations

  • All bitwise operations (AND, OR, XOR, NOT, NAND, NOR) are available via calculator_send_command()
  • Bit shift operations: Left Shift (LSH), Right Shift (RSH), Logical Right Shift (RSHL)
  • Rotate operations: Rotate Left (ROL), Rotate Right (ROR)
  • Rotate-through-carry: ROLC, RORC

• Radix Display Functions

  • calculator_get_result_hex() - Get result in hexadecimal format
  • calculator_get_result_dec() - Get result in decimal format
  • calculator_get_result_oct() - Get result in octal format
  • calculator_get_result_bin() - Get result in binary format
  • calculator_get_binary_display() - Get 64-bit binary representation for bit panel

• Bit Position Commands

  • CMD_BINPOS(n) - Toggle bit at position n (0-63) for direct bit manipulation

Changed

• Enhanced calculator_send_command()
  • Now properly tracks word width changes when sending CMD_QWORD, CMD_DWORD, CMD_WORD, or CMD_BYTE commands
  • Improved state synchronization between wrapper and native engine

0.0.1

• Initial version.