File size: 13,978 Bytes
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() => {
const body = document.body;
const html = document.documentElement;
// Force layout calculation
body.offsetHeight;
// Get body's computed style to extract margins
const bodyStyle = window.getComputedStyle(body);
const marginTop = parseFloat(bodyStyle.marginTop) || 0;
const marginBottom = parseFloat(bodyStyle.marginBottom) || 0;
const marginLeft = parseFloat(bodyStyle.marginLeft) || 0;
const marginRight = parseFloat(bodyStyle.marginRight) || 0;
const bodyRect = body.getBoundingClientRect();
// Find the furthest extent of content
let maxY = bodyRect.bottom;
let maxX = bodyRect.right;
const allElements = body.querySelectorAll('*');
allElements.forEach(el => {
const rect = el.getBoundingClientRect();
const style = window.getComputedStyle(el);
if (style.display === 'none' ||
style.visibility === 'hidden' ||
rect.width === 0 || rect.height === 0) {
return;
}
if (rect.bottom > maxY) maxY = rect.bottom;
if (rect.right > maxX) maxX = rect.right;
});
// CRITICAL FIX: Include body margins in the total size
// The PDF needs to be tall enough to contain the margins too!
const totalWidth = Math.ceil(maxX - bodyRect.left + marginRight + 5);
const totalHeight = Math.ceil(maxY + marginBottom + 5);
return {
width: totalWidth,
height: totalHeight,
debug: {
marginTop,
marginBottom,
marginLeft,
marginRight,
bodyRectTop: bodyRect.top,
bodyRectBottom: bodyRect.bottom,
maxY,
contentHeightWithoutMargin: Math.ceil(maxY - bodyRect.top)
}
};
}
"""
MEASURE_DIMENSIONS_V2 = """
() => {
const body = document.body;
const html = document.documentElement;
// Force layout calculation
body.offsetHeight;
html.offsetHeight;
// Get body's computed style to extract margins
const bodyStyle = window.getComputedStyle(body);
const marginTop = parseFloat(bodyStyle.marginTop) || 0;
const marginBottom = parseFloat(bodyStyle.marginBottom) || 0;
const marginLeft = parseFloat(bodyStyle.marginLeft) || 0;
const marginRight = parseFloat(bodyStyle.marginRight) || 0;
// Strategy: Find the bounding box of ALL visible content
// This works for narrow receipts, wide tables, multi-column, everything
let minX = Infinity;
let minY = Infinity;
let maxX = -Infinity;
let maxY = -Infinity;
// Check body itself
const bodyRect = body.getBoundingClientRect();
if (bodyRect.width > 0 && bodyRect.height > 0) {
minX = Math.min(minX, bodyRect.left);
minY = Math.min(minY, bodyRect.top);
maxX = Math.max(maxX, bodyRect.right);
maxY = Math.max(maxY, bodyRect.bottom);
}
// Check all elements to find true content bounds
const allElements = document.querySelectorAll('*');
allElements.forEach(el => {
const rect = el.getBoundingClientRect();
const style = window.getComputedStyle(el);
// Skip hidden elements
if (style.display === 'none' ||
style.visibility === 'hidden' ||
rect.width === 0 ||
rect.height === 0) {
return;
}
// Skip script/style tags
if (el.tagName === 'SCRIPT' || el.tagName === 'STYLE') {
return;
}
minX = Math.min(minX, rect.left);
minY = Math.min(minY, rect.top);
maxX = Math.max(maxX, rect.right);
maxY = Math.max(maxY, rect.bottom);
});
// Fallback if no content found
if (minX === Infinity) {
minX = 0;
minY = 0;
maxX = bodyRect.right;
maxY = bodyRect.bottom;
}
// Calculate total dimensions
// Width: from leftmost to rightmost content + right margin
// Height: from topmost to bottommost content + bottom margin
const buffer = 5; // Small safety buffer
const totalWidth = Math.ceil(maxX - minX + marginRight + buffer);
const totalHeight = Math.ceil(maxY - minY + marginBottom + buffer);
return {
width: totalWidth,
height: totalHeight,
debug: {
marginTop,
marginBottom,
marginLeft,
marginRight,
minX,
minY,
maxX,
maxY,
bodyWidth: bodyRect.width,
bodyHeight: bodyRect.height
}
};
}
"""
MEASURE_DIMENSIONS_V3 = """
() => {
const body = document.body;
// Force layout
body.offsetHeight;
const bodyRect = body.getBoundingClientRect();
// For receipts/documents with body padding, the body rect already includes everything
// Just add a small buffer
const buffer = 5;
return {
width: Math.ceil(bodyRect.width + buffer),
height: Math.ceil(bodyRect.height + buffer)
};
}
"""
MEASURE_DIMENSIONS_V4 = """
() => {
const body = document.body;
const html = document.documentElement;
// Force layout calculation
body.offsetHeight;
html.offsetHeight;
// Get body's computed style to extract margins
const bodyStyle = window.getComputedStyle(body);
const marginTop = parseFloat(bodyStyle.marginTop) || 0;
const marginBottom = parseFloat(bodyStyle.marginBottom) || 0;
const marginLeft = parseFloat(bodyStyle.marginLeft) || 0;
const marginRight = parseFloat(bodyStyle.marginRight) || 0;
// Get body padding as well
const paddingTop = parseFloat(bodyStyle.paddingTop) || 0;
const paddingBottom = parseFloat(bodyStyle.paddingBottom) || 0;
const paddingLeft = parseFloat(bodyStyle.paddingLeft) || 0;
const paddingRight = parseFloat(bodyStyle.paddingRight) || 0;
// Strategy: Find the bounding box of ALL visible content
let minX = Infinity;
let minY = Infinity;
let maxX = -Infinity;
let maxY = -Infinity;
// Check body itself
const bodyRect = body.getBoundingClientRect();
if (bodyRect.width > 0 && bodyRect.height > 0) {
minX = Math.min(minX, bodyRect.left);
minY = Math.min(minY, bodyRect.top);
maxX = Math.max(maxX, bodyRect.right);
maxY = Math.max(maxY, bodyRect.bottom);
}
// Check all elements to find true content bounds
const allElements = document.querySelectorAll('*');
allElements.forEach(el => {
const rect = el.getBoundingClientRect();
const style = window.getComputedStyle(el);
// Skip hidden elements
if (style.display === 'none' ||
style.visibility === 'hidden' ||
rect.width === 0 ||
rect.height === 0) {
return;
}
// Skip script/style tags
if (el.tagName === 'SCRIPT' || el.tagName === 'STYLE') {
return;
}
minX = Math.min(minX, rect.left);
minY = Math.min(minY, rect.top);
maxX = Math.max(maxX, rect.right);
maxY = Math.max(maxY, rect.bottom);
});
// Fallback if no content found
if (minX === Infinity) {
minX = 0;
minY = 0;
maxX = bodyRect.right;
maxY = bodyRect.bottom;
}
// Calculate total dimensions
// CRITICAL FIX: The viewport starts at 0,0 but content might be offset
// We need the full document size, not just content span
// For width: take the maximum of either the rightmost content or body width
// For height: take the maximum of either the bottommost content or body height
const buffer = 5;
// Option A: Measure from viewport origin (0,0) to furthest content
const totalWidth = Math.ceil(maxX + buffer);
const totalHeight = Math.ceil(maxY + buffer);
// Option B: Also consider body's full width (in case body is wider than content)
const bodyFullWidth = bodyRect.width;
const bodyFullHeight = bodyRect.height;
// Use whichever is larger
const finalWidth = Math.max(totalWidth, bodyFullWidth);
const finalHeight = Math.max(totalHeight, bodyFullHeight);
return {
width: finalWidth,
height: finalHeight,
debug: {
marginTop,
marginBottom,
marginLeft,
marginRight,
paddingTop,
paddingBottom,
paddingLeft,
paddingRight,
minX,
minY,
maxX,
maxY,
bodyWidth: bodyRect.width,
bodyHeight: bodyRect.height,
bodyLeft: bodyRect.left,
bodyTop: bodyRect.top,
totalWidth,
totalHeight,
bodyFullWidth,
bodyFullHeight
}
};
}
"""
MEASURE_DIMENSIONS = """
() => {
const body = document.body;
const html = document.documentElement;
// Force layout
body.offsetHeight;
html.offsetHeight;
const bodyStyle = window.getComputedStyle(body);
const paddingTop = parseFloat(bodyStyle.paddingTop) || 0;
const paddingBottom = parseFloat(bodyStyle.paddingBottom) || 0;
const paddingLeft = parseFloat(bodyStyle.paddingLeft) || 0;
const paddingRight = parseFloat(bodyStyle.paddingRight) || 0;
// Strategy: Find bounding box of ALL visible content
let minX = Infinity;
let minY = Infinity;
let maxX = -Infinity;
let maxY = -Infinity;
const bodyRect = body.getBoundingClientRect();
// Check all elements (not just body children, in case of deep nesting)
const allElements = document.querySelectorAll('body *');
let hasContent = false;
allElements.forEach(el => {
// Skip scripts, styles, and hidden elements
if (el.tagName === 'SCRIPT' || el.tagName === 'STYLE') return;
const rect = el.getBoundingClientRect();
const style = window.getComputedStyle(el);
if (style.display === 'none' || style.visibility === 'hidden' ||
rect.width === 0 || rect.height === 0) {
return;
}
hasContent = true;
minX = Math.min(minX, rect.left);
minY = Math.min(minY, rect.top);
maxX = Math.max(maxX, rect.right);
maxY = Math.max(maxY, rect.bottom);
});
// Fallback if no content found
if (!hasContent || minX === Infinity) {
return {
width: Math.ceil(bodyRect.width + 5),
height: Math.ceil(bodyRect.height + 5)
};
}
// Now decide: do we measure from content bounds or from body bounds?
// Approach 1: Content-based (for narrow receipts)
// Width = actual content span + left padding + right padding
const contentWidth = maxX - minX;
const contentHeight = maxY - minY;
const contentBasedWidth = contentWidth + paddingLeft + paddingRight;
const contentBasedHeight = contentHeight + paddingTop + paddingBottom;
// Approach 2: Body-based (for full-width documents)
// Width = body's full width
const bodyBasedWidth = bodyRect.width;
const bodyBasedHeight = bodyRect.height;
// Decision logic:
// If content is significantly narrower than body (e.g., < 70% of body width),
// it's likely a centered narrow layout like a receipt
// Otherwise, it's a full-width document
const contentWidthRatio = contentWidth / bodyRect.width;
const isNarrowCentered = contentWidthRatio < 0.7;
let finalWidth, finalHeight;
if (isNarrowCentered) {
// Use content-based measurement (receipt-style)
finalWidth = contentBasedWidth;
finalHeight = Math.max(contentBasedHeight, bodyBasedHeight); // Use max for height
} else {
// Use body-based measurement (full-width document)
finalWidth = bodyBasedWidth;
finalHeight = bodyBasedHeight;
}
const buffer = 5;
return {
width: Math.ceil(finalWidth + buffer),
height: Math.ceil(finalHeight + buffer),
debug: {
isNarrowCentered,
contentWidthRatio: contentWidthRatio.toFixed(2),
contentWidth,
contentHeight,
bodyWidth: bodyRect.width,
bodyHeight: bodyRect.height,
approach: isNarrowCentered ? 'content-based' : 'body-based'
}
};
}
"""
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