Vue JS : right click event directive

<button @contextmenu=”handler($event)”>r-click</button> methods : { handler: function(e) { //do stuff e.preventDefault(); } } @contextmenu will do the trick. The preventDefault is to avoid showing the default context menu. Shorter, as indincated in the comment : <button @contextmenu.prevent=”handler”>r-click</button> Now the prevent modifier takes care preventing default behaviour. Edit: For this to work with vue components, add … Read more

Store mouse click event coordinates with matplotlib

mpl_connect needs to be called just once to connect the event to event handler. It will start listening to click event until you disconnect. And you can use fig.canvas.mpl_disconnect(cid) to disconnect the event hook. What you want to do is something like: import numpy as np import matplotlib.pyplot as plt x = np.arange(-10,10) y = … Read more

Weak performance of CGEventPost under GPU load

I guess you’re filling up the queue (underlying mach port)… You can confirm this using the “scheduling” or “system call” instrument in Instruments. (Create a new blank document, add the instrument, then under File > Record Options… make sure “deferred mode” is checked.) This will show all thread activity in your app (when threads block, … Read more

Simulating a mousedown, click, mouseup sequence in Tampermonkey?

Send mouse events. Like so: //— Get the first link that has “stackoverflow” in its URL. var targetNode = document.querySelector (“a[href*=’stackoverflow’]”); if (targetNode) { //— Simulate a natural mouse-click sequence. triggerMouseEvent (targetNode, “mouseover”); triggerMouseEvent (targetNode, “mousedown”); triggerMouseEvent (targetNode, “mouseup”); triggerMouseEvent (targetNode, “click”); } else console.log (“*** Target node not found!”); function triggerMouseEvent (node, eventType) { … Read more

Delay jquery hover event?

Use the hoverIntent plugin for jquery: http://cherne.net/brian/resources/jquery.hoverIntent.html It’s absolutely perfect for what you describe and I’ve used it on nearly every project that required mouseover activation of menus etc… There is one gotcha to this approach, some interfaces are devoid of a ‘hover’ state eg. mobile browsers like safari on the iphone. You may be … Read more

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