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Add a way to go directly to some page number #47

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24 changes: 24 additions & 0 deletions layouts/shortcodes/embed-pdf.html
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,7 @@

<div class="pdf-paginator" id="pdf-paginator-{{ substr (.Get "url" | md5) 0 8 }}">
<button id="pdf-prev-{{ substr (.Get "url" | md5) 0 8 }}">Previous</button>
<input type="number" value="1" id="pdf-desired-page-{{ substr (.Get "url" | md5) 0 8 }}" />
<button id="pdf-next-{{ substr (.Get "url" | md5) 0 8 }}">Next</button> &nbsp; &nbsp;
<span>
<span class="pdf-pagenum" id="pdf-pagenum-{{ substr (.Get "url" | md5) 0 8 }}"></span> / <span class="pdf-pagecount" id="pdf-pagecount-{{ substr (.Get "url" | md5) 0 8 }}"></span>
Expand Down Expand Up @@ -180,6 +181,7 @@

// Update page counters
document.getElementById('pdf-pagenum-{{ substr (.Get "url" | md5) 0 8 }}').textContent = num;
document.getElementById('pdf-desired-page-{{ substr (.Get "url" | md5) 0 8 }}').value = num;
}

/**
Expand Down Expand Up @@ -231,6 +233,28 @@
}
document.getElementById('pdf-prev-{{ substr (.Get "url" | md5) 0 8 }}').addEventListener('click', onPrevPage);

/**
* Displays a desired page.
*/
function onDesiredPage() {
// Get the new page number and render it.
let desiredPage = document.getElementById('pdf-desired-page-{{ substr (.Get "url" | md5) 0 8 }}').valueAsNumber;
pageNum = Math.min(
Math.max(desiredPage, 1),
pdfDoc.numPages,
);
queueRenderPage(pageNum);
}
function onDesiredPageEnter(event) {
// Get the key code.
const keycode = event.keyCode ? event.keyCode : event.which;
if (keycode === 13) {
onDesiredPage();
}
}
document.getElementById('pdf-desired-page-{{ substr (.Get "url" | md5) 0 8 }}').addEventListener('keypress', onDesiredPageEnter);
document.getElementById('pdf-desired-page-{{ substr (.Get "url" | md5) 0 8 }}').addEventListener('click', onDesiredPage);

/**
* Displays next page.
*/
Expand Down