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// Used by both full worksheets and compact examples
//
// NOTE: This file now re-exports from the modular typstHelpers/ directory
// for backward compatibility. New code should import from typstHelpers/ directly.
// Import types for internal use
import type { DisplayOptions } from './typstHelpers/shared/types'
export { generatePlaceValueColors } from './typstHelpers/shared/colors'
export { generateTypstHelpers } from './typstHelpers/shared/helpers'
// Re-export everything from modular structure
export type {
CellDimensions,
DisplayOptions,
} from './typstHelpers/shared/types'
export { generateSubtractionProblemStackFunction } from './typstHelpers/subtraction/problemStack'
/**
* Generate Typst function for rendering problem stack/grid
* This is the SINGLE SOURCE OF TRUTH for problem rendering layout
* Used by both full worksheets and preview examples
*
* @param cellSize Size of each digit cell in inches
* @param maxDigits Maximum number of digits in any problem on this page (1-6)
*/
export function generateProblemStackFunction(cellSize: number, maxDigits: number = 3): string {
const cellSizeIn = `${cellSize}in`
const cellSizePt = cellSize * 72
// Generate place value color assignments (unique color per place value)
// Index 0 = ones, 1 = tens, 2 = hundreds, 3 = thousands, 4 = ten-thousands, 5 = hundred-thousands
const placeColors = [
'color-ones', // 0: ones (light blue)
'color-tens', // 1: tens (light green)
'color-hundreds', // 2: hundreds (light yellow)
'color-thousands', // 3: thousands (light pink/rose)
'color-ten-thousands', // 4: ten-thousands (light purple/lavender)
'color-hundred-thousands', // 5: hundred-thousands (light peach/orange)
]
return String.raw`
// Problem rendering function for addition worksheets (supports 1-${maxDigits} digit problems)
// Returns the stack/grid structure for rendering a single addition problem
// Per-problem display flags: show-carries, show-answers, show-colors, show-ten-frames, show-numbers
#let problem-stack(a, b, index-or-none, show-carries, show-answers, show-colors, show-ten-frames, show-numbers) = {
// Place value colors array for dynamic lookup (index 0 = ones, 1 = tens, ...)
let place-colors = (${placeColors.join(', ')})
// Extract digits dynamically based on problem size
let max-digits = ${maxDigits}
// Allow one extra digit for potential overflow (e.g., 99999 + 99999 = 199998)
let max-extraction = max-digits + 1
let a-digits = ()
let b-digits = ()
let temp-a = a
let temp-b = b
// Extract digits from right to left (ones, tens, hundreds, ...)
for i in range(0, max-extraction) {
a-digits.push(calc.rem(temp-a, 10))
b-digits.push(calc.rem(temp-b, 10))
temp-a = calc.floor(temp-a / 10)
temp-b = calc.floor(temp-b / 10)
}
// Find highest non-zero digit position for each number (for leading zero detection)
let a-highest = 0
let b-highest = 0
for i in range(0, max-extraction) {
if a-digits.at(i) > 0 { a-highest = i }
if b-digits.at(i) > 0 { b-highest = i }
}
// Actual number of digits in this specific problem (not the page max)
// Must consider the sum, which may have one more digit than the addends (e.g., 99 + 1 = 100)
let sum = a + b
let sum-highest = 0
let temp-sum = sum
for i in range(0, max-extraction) {
if calc.rem(temp-sum, 10) > 0 { sum-highest = i }
temp-sum = calc.floor(temp-sum / 10)
}
let actual-digits = calc.max(calc.max(a-highest, b-highest), sum-highest) + 1
// Generate column list dynamically based on actual digits in this problem
// Column list: [+sign column (0.5em), ...actual-digits × cellSizeIn]
let column-list = (0.5em,)
for i in range(0, actual-digits) {
column-list.push(${cellSizeIn})
}
// Wrap grid in a box to enable place() overlay for operator
// Note: Problem numbers are now rendered at the problem-box level, not here
box[
#grid(
columns: column-list,
gutter: 0pt,
// Carry boxes row (one per place value, right to left)
[], // Empty cell for + sign column
..for i in range(0, actual-digits).rev() {
// DEBUG: Show which place values get carry boxes and why
let show-carry = show-carries and i > 0
if show-carry {
// Carry box: shows carry FROM position i-1 TO position i
let source-color = place-colors.at(i - 1) // Color of source place value
let dest-color = place-colors.at(i) // Color of destination place value
if show-colors {
(box(width: ${cellSizeIn}, height: ${cellSizeIn})[
#diagonal-split-box(${cellSizeIn}, source-color, dest-color)
],)
} else {
(box(width: ${cellSizeIn}, height: ${cellSizeIn}, stroke: 0.5pt)[],)
}
} else {
// No carry box for this position (i == 0 or show-carries is false)
(box(width: ${cellSizeIn}, height: ${cellSizeIn})[
#v(${cellSizeIn})
],)
}
},
// First addend row (right to left: ones, tens, hundreds, ...)
[], // Empty cell for + sign column
..for i in range(0, actual-digits).rev() {
let digit = a-digits.at(i)
let place-color = place-colors.at(i) // Dynamic color lookup by place value
let fill-color = if show-colors { place-color } else { color-none }
// Hide leading zeros (zeros higher than the highest non-zero digit)
(box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: fill-color)[
#align(center + horizon)[
#if i <= a-highest [
#text(size: ${(cellSizePt * 0.8).toFixed(1)}pt)[#str(digit)]
] else [
#h(0pt)
]
]
],)
},
// Second addend row (operator sign rendered separately via place() for proper layering)
[], // Empty cell for operator column (operator overlaid later)
..for i in range(0, actual-digits).rev() {
let digit = b-digits.at(i)
let place-color = place-colors.at(i) // Dynamic color lookup by place value
let fill-color = if show-colors { place-color } else { color-none }
// Hide leading zeros (zeros higher than the highest non-zero digit)
(box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: fill-color)[
#align(center + horizon)[
#if i <= b-highest [
#text(size: ${(cellSizePt * 0.8).toFixed(1)}pt)[#str(digit)]
] else [
#h(0pt)
]
]
],)
},
// Line row
[], // Empty cell for + sign column
..for i in range(0, actual-digits) {
(line(length: ${cellSizeIn}, stroke: heavy-stroke),)
},
// Ten-frames row with overlaid line on top
// Show ten-frames for any place value that has regrouping (or all if show-ten-frames-for-all)
..if show-ten-frames {
// Check which place values need ten-frames (only for actual digits in this problem)
let carry = 0
let regrouping-places = ()
for i in range(0, actual-digits) {
let digit-sum = a-digits.at(i) + b-digits.at(i) + carry
if digit-sum >= 10 {
regrouping-places.push(i)
carry = 1
} else {
carry = 0
}
}
let needs-ten-frames = show-ten-frames-for-all or regrouping-places.len() > 0
if needs-ten-frames {
(
[], // Empty cell for + sign column
// Show ten-frames for any place value that needs regrouping
..for i in range(0, actual-digits).rev() {
let shows-frame = show-ten-frames-for-all or regrouping-places.contains(i)
if shows-frame {
// Show ten-frame for this place value
// Top frame: carry destination (next higher place value)
// Bottom frame: current place value overflow
let top-color = if i + 1 < actual-digits { place-colors.at(i + 1) } else { color-none }
let bottom-color = place-colors.at(i)
(box(width: ${cellSizeIn}, height: ${cellSizeIn} * 0.8)[
#align(center + top)[#ten-frames-stacked(${cellSizeIn} * 0.90, if show-colors { top-color } else { color-none }, if show-colors { bottom-color } else { color-none })]
#place(top, line(length: ${cellSizeIn} * 0.90, stroke: heavy-stroke))
],)
} else {
(v(${cellSizeIn} * 0.8),)
}
},
)
} else {
()
}
} else {
()
},
// Answer boxes (one per digit column, only for actual digits including sum)
[], // Empty cell for + sign column
..for i in range(0, actual-digits).rev() {
let place-color = place-colors.at(i) // Dynamic color lookup by place value
let fill-color = if show-colors { place-color } else { color-none }
let show-answer = show-answers
if show-answer {
(box(width: ${cellSizeIn}, height: ${cellSizeIn}, stroke: 0.5pt, fill: fill-color)[],)
} else {
// No answer box (show-answers is false)
(box(width: ${cellSizeIn}, height: ${cellSizeIn})[
#v(${cellSizeIn})
],)
}
},
)
// Operator overlay - rendered last for proper layering
// Position: left edge, at second addend row vertical position
#place(
left + top,
dx: 0pt,
dy: ${cellSizeIn} * 2, // Skip carry boxes row + first addend row
box(width: 0.5em, height: ${cellSizeIn})[
#align(center + horizon)[
#text(size: ${(cellSizePt * 0.8).toFixed(1)}pt)[+]
]
]
)
]
}
`
}
/**
* Generate Typst function for rendering subtraction problem stack/grid
* Parallel to generateProblemStackFunction but for subtraction
*
* Key differences from addition:
* - Borrow boxes (instead of carry boxes) show borrows FROM higher TO lower
* - Operator is minus sign (−)
* - Difference can have fewer digits than minuend (hide leading zeros)
* - Ten-frames show borrowing visualization
*
* @param cellSize Size of each digit cell in inches
* @param maxDigits Maximum number of digits in any problem on this page (1-6)
*/
/**
* DEPRECATED: Old generateProblemTypst function - use generateProblemStackFunction() instead
* This function is kept for backwards compatibility but should not be used
* Generate Typst code for rendering a single addition problem
* This is the core rendering logic shared between worksheets and examples
*/
export function generateProblemTypst(
addend1: number,
addend2: number,
cellSize: number,
options: DisplayOptions,
problemNumber?: number
): string {
const cellSizeIn = `${cellSize}in`
const cellSizePt = cellSize * 72
return String.raw`
#let a = ${addend1}
#let b = ${addend2}
#let aH = calc.floor(a / 100)
#let aT = calc.floor(calc.rem(a, 100) / 10)
#let aO = calc.rem(a, 10)
#let bH = calc.floor(b / 100)
#let bT = calc.floor(calc.rem(b, 100) / 10)
#let bO = calc.rem(b, 10)
#stack(
dir: ttb,
spacing: 0pt,
${
options.showProblemNumbers && problemNumber !== undefined
? `align(top + left)[
#box(inset: (left: 0.08in, top: 0.05in))[
#text(size: ${(cellSizePt * 0.6).toFixed(1)}pt, weight: "bold", font: "New Computer Modern Math")[\\#${problemNumber}.]
]
],`
: ''
}
grid(
columns: (0.5em, ${cellSizeIn}, ${cellSizeIn}, ${cellSizeIn}),
gutter: 0pt,
[],
// Hundreds carry box: shows carry FROM tens (green) TO hundreds (yellow)
${
options.showCarryBoxes
? options.showPlaceValueColors
? 'diagonal-split-box(' + cellSizeIn + ', color-tens, color-hundreds),'
: 'box(width: ' + cellSizeIn + ', height: ' + cellSizeIn + ', stroke: 0.5pt)[],'
: 'v(' + cellSizeIn + '),'
}
// Tens carry box: shows carry FROM ones (blue) TO tens (green)
${
options.showCarryBoxes
? options.showPlaceValueColors
? 'diagonal-split-box(' + cellSizeIn + ', color-ones, color-tens),'
: 'box(width: ' + cellSizeIn + ', height: ' + cellSizeIn + ', stroke: 0.5pt)[],'
: 'v(' + cellSizeIn + '),'
}
[],
// First addend
[],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-hundreds' : 'color-none'})[#align(center + horizon)[#if aH > 0 [#aH] else [#h(0pt)]]],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-tens' : 'color-none'})[#align(center + horizon)[#aT]],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-ones' : 'color-none'})[#align(center + horizon)[#aO]],
// Second addend with + sign
[+],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-hundreds' : 'color-none'})[#align(center + horizon)[#if bH > 0 [#bH] else [#h(0pt)]]],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-tens' : 'color-none'})[#align(center + horizon)[#bT]],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: ${options.showPlaceValueColors ? 'color-ones' : 'color-none'})[#align(center + horizon)[#bO]],
// Horizontal line
[],
box(width: ${cellSizeIn}, height: 1pt, inset: 0pt)[#line(length: 100%, stroke: 0.8pt)],
box(width: ${cellSizeIn}, height: 1pt, inset: 0pt)[#line(length: 100%, stroke: 0.8pt)],
box(width: ${cellSizeIn}, height: 1pt, inset: 0pt)[#line(length: 100%, stroke: 0.8pt)],
// Answer boxes (or blank space)
${
options.showAnswerBoxes
? `[],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: color-none, stroke: grid-stroke, inset: 0pt)[],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: color-none, stroke: grid-stroke, inset: 0pt)[],
box(width: ${cellSizeIn}, height: ${cellSizeIn}, fill: color-none, stroke: grid-stroke, inset: 0pt)[],`
: ''
}
)${
options.showTenFrames || options.showTenFramesForAll
? `,
v(4pt),
box(inset: 2pt)[
#ten-frames-stacked(${cellSizeIn}, color-ones, color-tens)
]`
: ''
}
)
`
}
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