4/11/2023 0 Comments Smoothscroll hseasing presets ( ease-in, ease-out, ease-in-out etc.).In CSS, we have the provision of defining the animations of some properties like background-color and opacity through: animation parameters specified, which will dictate the pace of the scrolling.This will depend on two interdependent factors: On each tick, that is, each invocation of the callback function, the function will calculate the amount that needs to be scrolled. requestAnimationFrame is a non-blocking way to call a function that performs an animation just before each repaint cycle of the browser. A continuously self-executing function is provided to requestAnimationFrame as a callback. Now, we need to start scrolling the element at a pace based on the duration provided in the parameters. function smoothScroll(scrollParams = īased on the type of element, we use appropriate properties, as seen below. The library will expose a function that will accept the different input parameters required like the element to scroll, the scroll amount, etc. callback to cancel the scrolling event at any point.specify the duration over which the scroll will happen.ability to scroll inside any element and not just window.animations with cubic Bézier curves and easing presets - the most interesting part!.Today, we will explore how smooth scrolling works on the web by building a smooth scrolling library from scratch that will have the following features: However the keyboard scrolling experience is terrible, its smooth only if you change apz.force_disable_desktop_zooming_scrollbars -> trueĪnd this introduce a rendering lag which is even more of a visual pain in the ass.Photo by Damon Lam on Unsplash (it’s a scroll. It is fast, precise and i think it should remain the same for the foreseeable ease dont change it lol. When you test with mouse scroll, even the default value is perfectly smooth. I use because of its simple design to make sure nothing else is interfering with my test. Pick a random novel site and hold keyboard arrow key to test the scrolling you'll see what i mean It is obviously less than 60fps no matter how you tweak it. The problem is keyboard scrolling, it has insane amount of stuttering, if you only look at the scroll bar it is moving at a perfectly smooth pace, however if you stare at the content, no matter how simple is the website even just pure text absolutely nothing else, it is still very stuttery on a decent spec machine. No, the mouse scrolling isnt the issue here, mouse scrolling on firefox is perfectly smooth. Specially when it's just one dev's vision that does not work well on desktops with mouses, and even breaks scrolling with the ^keyboard. I wish that mozilla would stick to their guns and not try to implement stuff from the realm of trackpad driver. So if you regularly scroll with the keyboard arrows, you might want to set false. Slide view back (or higher res without horizontal scrollbar) - minus 50%FPS! It's, not a random website. Can someone explain to me how do you code something like this? (bug in action) Slide view horizontally one notch to the right - no more performance loss when scrolling via keyboard. Less FPS, choppier scrolling compared to the mousewheel. It can result in as much as -50% FPS under Webrender and around -25% FPS under Direct3D 11 Advanced Layers, Direct3D 11, and Basic. Plus, verified that (defaults to true) hinders scrolling via keyboard for specific websites. I call it ASS = Accelerated Smooth Scrolling ) Firefox defaults might be a good fit for people that use a laptop trackpad exclusively, but for mouse users, above preset is objectively better.Īfter testing on a 100Hz CRT display and new generic keyboard and mouse, found the initial proposal too fluid, so I've dialed it up a notch or two. A mousewheel simply has another flow - you don't slide your whole hand slowly over it to have a constant motion, but do multiple slow 1-2 notches rolls, or faster 4+ rolls to go further. For a normal mouse, it rarely registers a smooth scroll request, while most time being choppy. Compared to fresh Nightly, my own is not just smooth sometimes, but every time! That's because the default scrolling feels more suitable to a trackball mouse - I've played Quake and then CS with that mouse for years and I was godlike, btw. Thousands of lines scrolled later, I've scientifically determined the almost perfect preset. The story - revised Got fed up by firefox's so-called smooth scrolling mode, and decided to experiment from zero. For your user.js / prefs.js can copy the first section from here Only adjust among the ones with alternative more fluid values. Mousewheel.system_scroll_override_on_root_content.enabled
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