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Scale guacamole VNC display to fit browser window #2959

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Merged
kevoreilly merged 2 commits into from
Mar 27, 2026
Merged

Scale guacamole VNC display to fit browser window #2959

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1d50e2c
Scale guacamole VNC display to fit browser window
wmetcalf Mar 27, 2026
168f808
Address review: debounce resize handler and use built-in scale parameter
wmetcalf Mar 27, 2026
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19 changes: 16 additions & 3 deletions web/static/css/guac-main.css
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Original file line number Diff line number Diff line change
@@ -1,12 +1,25 @@
html, body {
margin: 0;
padding: 0;
height: 100%;
overflow: hidden;
}

.guaconsole {
display: flex;
flex-direction: column;
height: 100vh;
}

#container {
position: relative;
width: 100%;
height: 20em;
flex: 1;
overflow: hidden;
}

#terminal {
height: 100%;
width: 100%
width: 100%;
}

.dialog,
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33 changes: 32 additions & 1 deletion web/static/js/guac-main.js
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,37 @@ function GuacMe(element, guest_ip, vncport, session_id, recording_name) {
/* Show the terminal. */
$('#terminal').append(terminal_element);

/* Scale display to fit the browser window. */
var scaleDisplay = function() {
var display = terminal_client.getDisplay();
var displayWidth = display.getWidth();
var displayHeight = display.getHeight();
if (!displayWidth || !displayHeight) return;

var container = document.getElementById('container');
var containerWidth = container.offsetWidth;
var containerHeight = container.offsetHeight;
if (!containerWidth || !containerHeight) return;

var scale = Math.min(
containerWidth / displayWidth,
containerHeight / displayHeight
);
display.scale(scale);
};

/* Re-scale when the display size changes (initial connect). */
terminal_client.getDisplay().onresize = function() {
scaleDisplay();
};

/* Re-scale on browser window resize (debounced). */
var resizeTimeout;
window.addEventListener('resize', function() {
clearTimeout(resizeTimeout);
resizeTimeout = setTimeout(scaleDisplay, 100);
});

/* Disconnect on tab close. */
window.onunload = function() {
terminal_client.disconnect();
Expand All @@ -38,7 +69,7 @@ function GuacMe(element, guest_ip, vncport, session_id, recording_name) {
mouse.onmousedown =
mouse.onmouseup =
mouse.onmousemove = function(mouseState) {
terminal_client.sendMouseState(mouseState);
terminal_client.sendMouseState(mouseState, true);
};

/* Keyboard handling. */
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