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added a print/save as pdf option #85

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added a print/save as pdf option #85

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1 change: 1 addition & 0 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
<div><a href="/">Markdown Live Preview</a></div>
<div id="reset-button"><a href="#">Reset</a></div>
<div id="copy-button"><a href="#">Copy</a></div>
<div id="print-button"><a href="#">Print/PDF</a></div>
<div id="sync-button"><input type="checkbox" id="sync-scroll-checkbox"><label for="sync-scroll-checkbox">Sync scroll</label></div>
</div>
<div id="github"><a href="https://github.com/tanabe/markdown-live-preview"><img src="image/GitHub-Mark-Light-32px.webp"></a></div>
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4 changes: 4 additions & 0 deletions public/css/style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,10 @@ header a:hover {
margin-left: 16px;
}

#print-button {
margin-left: 16px;
}

#sync-button {
margin-left: 16px;
-webkit-user-select: none;
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93 changes: 93 additions & 0 deletions src/main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -238,6 +238,98 @@ This web site is using ${"`"}markedjs/marked${"`"}.
});
};

let openPrintWindow = () => {
// Get the content from the preview pane
let previewContent = document.querySelector('#output').innerHTML;

// Get the GitHub markdown CSS
let markdownStyles = '';
for (let sheet of document.styleSheets) {
if (sheet.href && sheet.href.includes('github-markdown')) {
try {
for (let rule of sheet.cssRules) {
markdownStyles += rule.cssText + '\n';
}
} catch (e) {
// Handle cross-origin CSS
markdownStyles = `@import url('${sheet.href}');`;
}
break;
}
}

// Create a new window with the content
let printWindow = window.open('', '_blank', 'width=800,height=600');

if (printWindow) {
printWindow.document.write(`
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Markdown Preview</title>
<style>
${markdownStyles}
body {
margin: 0;
padding: 20px;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
.markdown-body {
box-sizing: border-box;
min-width: 200px;
max-width: 980px;
margin: 0 auto;
padding: 45px;
}
@media print {
body {
margin: 0;
padding: 0;
}
.markdown-body {
padding: 20px;
}
/* Avoid page breaks inside these elements */
pre, blockquote, table {
page-break-inside: avoid;
}
/* Ensure headings stay with their content */
h1, h2, h3, h4, h5, h6 {
page-break-after: avoid;
}
/* Avoid breaking lists */
ul, ol {
page-break-inside: avoid;
}
}
</style>
</head>
<body>
<div class="markdown-body">
${previewContent}
</div>
</body>
</html>
`);
printWindow.document.close();

// Wait for content to load before printing
printWindow.onload = () => {
printWindow.focus();
printWindow.print();
};
}
};

let setupPrintButton = () => {
document.querySelector("#print-button").addEventListener('click', (event) => {
event.preventDefault();
openPrintWindow();
});
};


// ----- local state -----

let loadLastContent = () => {
Expand Down Expand Up @@ -346,6 +438,7 @@ This web site is using ${"`"}markedjs/marked${"`"}.
}
setupResetButton();
setupCopyButton(editor);
setupPrintButton();

let scrollBarSettings = loadScrollBarSettings() || false;
initScrollBarSync(scrollBarSettings);
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