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refactor(samples/calc-02): simplify layout to portrait-only single column

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Remove the responsive two-column desktop arrangement and make the calculator stack vertically with a 4-column display button row that preserves alignment. Also align the display buttons with the shared base button styling.
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MatMoul
2026-05-16 01:16:47 +02:00
parent 75bf6d69df
commit 54797f9dd9
4 changed files with 19 additions and 91 deletions
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.memory/state.md
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# State
- Core engine: `src/rpn-calculator.js`
- Active demo: `samples/calc-02/` responsive HP48GX layout with portrait/landscape support; display-adjacent button row stays in 4 columns
- Active demo: `samples/calc-02/` portrait-only HP48GX layout; display-adjacent button row stays in 4 columns and now shares the same base button styling as the function keys
- Mode button shows the current angle mode only; selecting a mode uses a popup menu
- Public API: `push`, `pop`, `clear`, `swap`, `remove`, `edit`, `isValidIndex`, `input`, `command`, `getOperationsByCategory`, `getConstants`
- Config: `maxSize`, `base`, `angleMode`, `enabledCommands`
- Commands: arithmetic, stack, trigonometry, constants `pi` and `e`; arithmetic now includes `root` for y-th roots
- Demo actions: keyboard focus is kept on the hidden input on desktop so typing keeps working; the keypad layout places Enter in the bottom-left, ± in the former Enter position, and Esc before Clear for safety; paste parses clipboard text as a number before pushing it to the stack; Ctrl+V is supported via the hidden input paste event; backspace is ignored when the stack is empty; operation errors are shown as an overlay bar on top of the calculator with a shorter timeout and darker red
- Demo actions: keyboard focus is kept on the hidden input on desktop so typing keeps working; the keypad layout places Enter in the bottom-left, ± in the former Enter position, and Esc before Clear for safety; paste parses clipboard text as a number before pushing it to the stack; Ctrl+V is supported via the hidden input paste event; backspace is ignored when the stack is empty; operation errors are shown as an overlay bar on top of the calculator with a shorter timeout and darker red; the display button row uses a 4-column grid with a spacer cell to preserve alignment
- Exports: browser `window.RpnCalculator`, CommonJS `module.exports`