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* Layout calculation for Rirekisho (履歴書)
*
* This module calculates the optimal layout for the rirekisho document,
* ensuring that:
* 1. All content fits within the page
* 2. Left and right page bottoms align perfectly
* 3. Font sizes don't go below minimum
* 4. Each section has at least its minimum height
*/
import type {
LayoutDimensions,
LayoutInput,
PaperDimensions,
PaperSize,
} from './types.js';
import {
FIXED_DIMENSIONS,
FONT_SIZE,
PAPER_SIZES,
PREFERRED_ROW_COUNTS,
ROW_HEIGHT,
SCALE_FACTORS,
SECTION_HEIGHTS,
} from './types.js';
// ============================================================================
// Helper Functions
// ============================================================================
/**
* Calculate the height of the left page header section
* (title, name, birth/gender, addresses)
*/
function calculateLeftHeaderHeight(scale: number): number {
const d = FIXED_DIMENSIONS;
return (
d.headerHeight * scale +
d.nameRowHeight * scale +
d.nameMainHeight * scale +
d.birthGenderHeight * scale +
d.addressRowHeight * scale * 2
);
}
/**
* Calculate table height from row count and row height
* +1 for header row
*/
function calculateTableHeight(dataRowCount: number, rowHeight: number): number {
return (dataRowCount + 1) * rowHeight;
}
// ============================================================================
// Layout Optimization
// ============================================================================
/**
* Layout allocation result for right page sections
*/
interface RightPageAllocation {
readonly rightHistoryRows: number;
readonly licenseRows: number;
readonly motivationHeight: number;
readonly notesHeight: number;
readonly totalHeight: number;
/** Adjusted row height (may be smaller than default if content is large) */
readonly adjustedRowHeight: number;
/** Adjusted font size (may be smaller than default if content is large) */
readonly adjustedFontSize: number;
/** Whether the content overflows (doesn't fit even with minimum row height) */
readonly overflows: boolean;
}
/**
* Allocation input parameters
*/
interface AllocationParams {
readonly availableHeight: number;
readonly historyOverflow: number;
readonly licenseDataRows: number;
readonly tableRowHeight: number;
readonly tableMargin: number;
readonly scale: number;
readonly paperSize: PaperSize;
readonly hideMotivation: boolean;
/** Total history data rows (education + work) */
readonly totalHistoryDataRows: number;
/** Available height for left page table area */
readonly leftTableAreaHeight: number;
}
/**
* Calculate optimal allocation of space on the right page
*
* Priority rules:
* 1. When license data is large: reduce motivation/notes height first, then reduce history rows
* 2. When history data is large: reduce license rows if possible, then reduce motivation/notes height
* 3. When both are large: reduce motivation/notes to minimum height
* - If still doesn't fit: reduce row height and font size (applied to all tables on both pages)
*
* The algorithm starts with preferred row counts and reduces as needed while
* maintaining minimum constraints.
*/
function allocateRightPageSpace(params: AllocationParams): RightPageAllocation {
const {
availableHeight,
historyOverflow,
licenseDataRows,
tableRowHeight,
tableMargin,
scale,
paperSize,
hideMotivation,
totalHistoryDataRows,
leftTableAreaHeight,
} = params;
const preferred = PREFERRED_ROW_COUNTS[paperSize];
const motivationMinHeight = hideMotivation
? 0
: SECTION_HEIGHTS.motivationMin * scale;
const notesMinHeight = SECTION_HEIGHTS.notesMin * scale;
// Row height and font size constraints
const minRowHeight = ROW_HEIGHT.min * scale;
const defaultFontSize = FONT_SIZE.default * scale;
const minFontSize = FONT_SIZE.min * scale;
// History extra rows (学歴, 職歴, 現在に至る, 以上)
const historyExtraRows = 4;
// Minimum row counts: must show all data, at least 1 row
const minHistoryRows = Math.max(1, historyOverflow);
const minLicenseRows = Math.max(1, licenseDataRows);
// Start with preferred row counts (but at least enough for data)
let rightHistoryRows = Math.max(preferred.rightHistory, minHistoryRows);
let licenseRows = Math.max(preferred.license, minLicenseRows);
let currentRowHeight = tableRowHeight;
let currentFontSize = defaultFontSize;
// Calculate how many left history rows fit with a given row height
const calcLeftHistoryRows = (rowHeight: number): number => {
return Math.floor(leftTableAreaHeight / rowHeight) - 2; // -1 for header, -1 for safety
};
// Calculate history overflow with a given row height
const calcHistoryOverflow = (rowHeight: number): number => {
const leftRows = calcLeftHistoryRows(rowHeight);
const totalNeeded = totalHistoryDataRows + historyExtraRows;
return Math.max(0, totalNeeded - leftRows);
};
// Calculate initial heights with preferred 6:4 ratio for motivation/notes
const calcMotivationNotesHeights = (
remaining: number,
): { motivation: number; notes: number } => {
if (hideMotivation) {
return { motivation: 0, notes: Math.max(notesMinHeight, remaining) };
}
const totalMin = motivationMinHeight + notesMinHeight;
if (remaining >= totalMin) {
const extra = remaining - totalMin;
return {
motivation: motivationMinHeight + extra * 0.6,
notes: notesMinHeight + extra * 0.4,
};
}
// Below minimum - proportionally reduce
const ratio = Math.max(0, remaining / totalMin);
return {
motivation: motivationMinHeight * ratio,
notes: notesMinHeight * ratio,
};
};
// Calculate remaining space for motivation/notes (with variable row height)
const calcRemainingForSections = (
histRows: number,
licRows: number,
rowHeight: number,
): number => {
const histHeight = calculateTableHeight(histRows, rowHeight);
const licHeight = calculateTableHeight(licRows, rowHeight);
const marginCount = hideMotivation ? 2 : 3;
return availableHeight - histHeight - licHeight - marginCount * tableMargin;
};
// Calculate total height (with variable row height)
const calcTotalHeight = (
histRows: number,
licRows: number,
motHeight: number,
notHeight: number,
rowHeight: number,
): number => {
const histHeight = calculateTableHeight(histRows, rowHeight);
const licHeight = calculateTableHeight(licRows, rowHeight);
const marginCount = hideMotivation ? 2 : 3;
return (
histHeight + licHeight + motHeight + notHeight + marginCount * tableMargin
);
};
// Check if current allocation fits (with variable row height)
const fitsInAvailable = (
histRows: number,
licRows: number,
motHeight: number,
notHeight: number,
rowHeight: number,
): boolean => {
const total = calcTotalHeight(
histRows,
licRows,
motHeight,
notHeight,
rowHeight,
);
return total <= availableHeight + 0.1; // Small tolerance for floating point
};
// Determine which data is "large" (exceeds preferred)
const historyIsLarge = historyOverflow > preferred.rightHistory;
const licenseIsLarge = licenseDataRows > preferred.license;
// Initial calculation with preferred rows
let remaining = calcRemainingForSections(
rightHistoryRows,
licenseRows,
currentRowHeight,
);
let { motivation: motivationHeight, notes: notesHeight } =
calcMotivationNotesHeights(remaining);
// If everything fits, we're done
if (
fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
) {
return {
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
totalHeight: availableHeight,
adjustedRowHeight: currentRowHeight,
adjustedFontSize: currentFontSize,
overflows: false,
};
}
// Need to reduce - apply priority rules
if (licenseIsLarge && !historyIsLarge) {
// Priority 1: License is large
// Step 1: Reduce motivation/notes to minimum
motivationHeight = motivationMinHeight;
notesHeight = notesMinHeight;
Eif (
!fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
) {
// Step 2: Reduce history rows (empty rows first)
while (rightHistoryRows > minHistoryRows) {
rightHistoryRows--;
Iif (
fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
)
break;
}
}
} else if (historyIsLarge && !licenseIsLarge) {
// Priority 2: History is large
// Step 1: Reduce license rows (empty rows first)
while (licenseRows > minLicenseRows) {
licenseRows--;
remaining = calcRemainingForSections(
rightHistoryRows,
licenseRows,
currentRowHeight,
);
({ motivation: motivationHeight, notes: notesHeight } =
calcMotivationNotesHeights(remaining));
if (
fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
)
break;
}
if (
!fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
) {
// Step 2: Reduce motivation/notes to minimum
motivationHeight = motivationMinHeight;
notesHeight = notesMinHeight;
}
} else {
// Priority 3: Both are large (or neither but still doesn't fit)
// Reduce motivation/notes to minimum first
motivationHeight = motivationMinHeight;
notesHeight = notesMinHeight;
// If still doesn't fit, reduce empty rows from both tables
while (
!fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
) {
// Alternate reducing license and history empty rows
let reduced = false;
Iif (licenseRows > minLicenseRows) {
licenseRows--;
reduced = true;
}
Iif (
!fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
) &&
rightHistoryRows > minHistoryRows
) {
rightHistoryRows--;
reduced = true;
}
Eif (!reduced) break; // Can't reduce anymore
}
// If still doesn't fit after reducing rows, reduce row height and font size
// This affects all tables on both left and right pages
Eif (
!fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
)
) {
// Calculate the optimal row height that fits all content
// We need to find a row height where:
// 1. Left page can fit leftHistoryRows (calculated from row height)
// 2. Right page can fit rightHistoryRows + licenseRows + motivation + notes
// Binary search for optimal row height
let lowHeight = minRowHeight;
let highHeight = tableRowHeight;
let bestRowHeight = minRowHeight;
for (let i = 0; i < 20; i++) {
// Max 20 iterations for precision
const midHeight = (lowHeight + highHeight) / 2;
// Recalculate overflow with this row height
const newOverflow = calcHistoryOverflow(midHeight);
const newRightHistoryRows = Math.max(1, newOverflow);
// Check if right page fits
const marginCount = hideMotivation ? 2 : 3;
const rightTableRows = newRightHistoryRows + 1 + licenseRows + 1; // +1 for headers
const rightTablesHeight = rightTableRows * midHeight;
const rightTotalHeight =
rightTablesHeight +
motivationMinHeight +
notesMinHeight +
marginCount * tableMargin;
if (rightTotalHeight <= availableHeight + 0.1) {
// This height works, try larger
bestRowHeight = midHeight;
lowHeight = midHeight;
} else {
// Too large, try smaller
highHeight = midHeight;
}
// Stop if converged
if (highHeight - lowHeight < 0.01) break;
}
// Use the best row height found
if (bestRowHeight >= minRowHeight) {
currentRowHeight = bestRowHeight;
// Recalculate right history rows with new row height
const newOverflow = calcHistoryOverflow(currentRowHeight);
rightHistoryRows = Math.max(1, newOverflow);
// Scale font size proportionally
const heightRatio = currentRowHeight / tableRowHeight;
currentFontSize = Math.max(minFontSize, defaultFontSize * heightRatio);
} else E{
// Use minimum row height - content may overflow but we can't go smaller
currentRowHeight = minRowHeight;
currentFontSize = minFontSize;
// Recalculate right history rows with minimum row height
const newOverflow = calcHistoryOverflow(currentRowHeight);
rightHistoryRows = Math.max(1, newOverflow);
}
}
}
// Final recalculation - distribute any remaining space to motivation/notes
remaining = calcRemainingForSections(
rightHistoryRows,
licenseRows,
currentRowHeight,
);
({ motivation: motivationHeight, notes: notesHeight } =
calcMotivationNotesHeights(remaining));
// Check if content still overflows after all adjustments
const finalFits = fitsInAvailable(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
);
return {
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
totalHeight: calcTotalHeight(
rightHistoryRows,
licenseRows,
motivationHeight,
notesHeight,
currentRowHeight,
),
adjustedRowHeight: currentRowHeight,
adjustedFontSize: currentFontSize,
overflows: !finalFits,
};
}
// ============================================================================
// Main Layout Calculation
// ============================================================================
/**
* Calculate complete layout dimensions for the rirekisho document
*/
export function calculateLayout(input: LayoutInput): LayoutDimensions {
const { paperSize, hideMotivation, dataCounts } = input;
const { historyDataRows, licenseDataRows } = dataCounts;
// Paper and scale
const paper: PaperDimensions = PAPER_SIZES[paperSize];
const scale = SCALE_FACTORS[paperSize];
// Page dimensions
const margin = FIXED_DIMENSIONS.margin * scale;
const marginBottom = FIXED_DIMENSIONS.marginBottom * scale;
const centerGap = FIXED_DIMENSIONS.centerGap * scale;
const pageWidth = (paper.width - margin * 2 - centerGap) / 2;
const pageHeight = paper.height - margin - marginBottom;
const footerHeight = FIXED_DIMENSIONS.footerHeight * scale;
const tableMargin = FIXED_DIMENSIONS.tableMargin * scale;
// Table dimensions (default values, may be adjusted by allocation)
const defaultTableRowHeight = ROW_HEIGHT.default * scale;
// Left page layout
const leftHeaderHeight = calculateLeftHeaderHeight(scale);
const leftContentHeight = pageHeight - footerHeight;
const leftTableAreaHeight =
leftContentHeight - leftHeaderHeight - tableMargin;
// Calculate how many rows fit on left page (using default row height initially)
// -1 for header row, -1 for safety margin
const defaultLeftHistoryRows =
Math.floor(leftTableAreaHeight / defaultTableRowHeight) - 2;
// Calculate history overflow to right page (with default row height)
const historyExtraRows = 4; // 学歴, 職歴, 現在に至る, 以上
const totalHistoryNeeded = historyDataRows + historyExtraRows;
const historyOverflow = Math.max(
0,
totalHistoryNeeded - defaultLeftHistoryRows,
);
// Right page layout - allocate space optimally
const rightContentHeight = pageHeight - footerHeight;
const allocation = allocateRightPageSpace({
availableHeight: rightContentHeight,
historyOverflow,
licenseDataRows,
tableRowHeight: defaultTableRowHeight,
tableMargin,
scale,
paperSize,
hideMotivation,
totalHistoryDataRows: historyDataRows,
leftTableAreaHeight,
});
// Use adjusted row height and font size from allocation
const tableRowHeight = allocation.adjustedRowHeight;
const tableFontSize = allocation.adjustedFontSize;
// Recalculate left history rows with the (possibly adjusted) row height
const leftHistoryRows = Math.floor(leftTableAreaHeight / tableRowHeight) - 2;
// Calculate table heights with the (possibly adjusted) row height
const leftTableHeight = calculateTableHeight(leftHistoryRows, tableRowHeight);
const rightHistoryTableHeight = calculateTableHeight(
allocation.rightHistoryRows,
tableRowHeight,
);
const licenseTableHeight = calculateTableHeight(
allocation.licenseRows,
tableRowHeight,
);
return {
paper,
scale,
margin,
marginBottom,
centerGap,
pageWidth,
pageHeight,
photoWidth: FIXED_DIMENSIONS.photoWidth * scale,
contactWidth: FIXED_DIMENSIONS.contactWidth * scale,
genderWidth: FIXED_DIMENSIONS.genderWidth * scale,
headerHeight: FIXED_DIMENSIONS.headerHeight * scale,
nameRowHeight: FIXED_DIMENSIONS.nameRowHeight * scale,
nameMainHeight: FIXED_DIMENSIONS.nameMainHeight * scale,
birthGenderHeight: FIXED_DIMENSIONS.birthGenderHeight * scale,
addressRowHeight: FIXED_DIMENSIONS.addressRowHeight * scale,
addressFuriganaHeight: FIXED_DIMENSIONS.addressFuriganaHeight * scale,
tableRowHeight,
tableFontSize,
tableMargin,
yearColumnWidth: FIXED_DIMENSIONS.yearColumnWidth * scale,
monthColumnWidth: FIXED_DIMENSIONS.monthColumnWidth * scale,
leftHistoryRows,
rightHistoryRows: allocation.rightHistoryRows,
licenseRows: allocation.licenseRows,
leftTableHeight,
rightHistoryTableHeight,
licenseTableHeight,
motivationMinHeight: allocation.motivationHeight,
notesMinHeight: allocation.notesHeight,
footerHeight,
hideMotivation,
overflows: allocation.overflows,
};
}
/**
* Validate that the layout can accommodate the data
*/
export function validateLayout(layout: LayoutDimensions): string | null {
if (layout.overflows) {
return 'データが多すぎてページに収まりません。学歴・職歴または免許・資格の数を減らしてください。';
}
return null;
}
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