I am trying to make the scroll smooth on scroll. I've already used the following code but it does nothing:
html {
scroll-behavior: smooth;
}
And also, this has nothing to do with scrolling smoothly directly to elements, my goal is to make the scrolling smooth, namely, when the scroll stops it should not stop abruptly. Please, help me.
Related
I am using a horizontal layout group for a panel that can have 1 or more children. The problem is that on load, the children are not aligned properly.
But they do get aligned when I do almost anything. When I change play scene screen size, disable layout and then enable it, change any property of horizontal layout group. And it works fine.
Anybody knows the reason behind this, I have even tried quick fixes(which I hate) but it won't work for some reason.
I have a window displaying a video stream with a twitter feed as an overlay.
When a new tweet is displayed, the current tweet animates out using a rotate animation and the next tweet is rotated into view. The animations are performed using a RotateTransition.
The app also switches between different cameras to display different streams. To give an indication of when the app switches to the next camera, I have a progressbar that fills using a Timeline object.
This works well, until I resize the window. The rotate animations start to flicker, along with the progressbars as they gradually fill.
As a test, I disabled the video stream, to see what's happening. The 'artifact' doesn't occur then and I can resize as much as I want. If I play the stream and don't resize, everything works well.
The video player is based on VLCJ, but the actual pixels are drawn on a WritableImage in an Imageview.
See the following images that illustrate the problem.
At the bottom right you can see 2 different progress bars (a ProgresBar and a ProgressIndicator).
A part of the flickering result is still visible below the second image. It somehow stays visible, probably because the area doesn't get redrawn.
Any idea what makes the flickering happen? Is there anything I can do to fix or avoid this?
I tried some VM options in IntelliJ: -Dsun.java2d.d3d=true -Dprism.forceGPU=true to somehow enable hardware acceleration, but that doesn't seem to help.
Disabling the progressbar fill animation doesn't help either.
I had a similar problem with some arcs and shapes that would flicker when its attributes / sizes were changed.
The solution to my problem was to make sure that the methods used to change the shapes were called from inside the JavaFX thread.
Platform.runLater(() -> {
arc.setStartAngle(30);
arc.setLength(45);
}
I'm developing a scaling web page with three image-based layers of parallax scrolling. Only the first two layers are set up with parallax javascript. The third layer is set at normal scroll speed 0, so it doesn't require any scroll speed modification.
My problem is that when the page is reloaded (on Firefox, at least) when you aren't at the top of the page, those two layers load in the wrong place, but then correct themselves once you start scrolling.
I believe the problem has something to do with the position attribute. Changing to "relative" has the same effect, changing to "fixed" has a similar effect (except on reloading, the layers act like the top of the viewport is the top of the page), and having no position attribute causes them to not be layered and not have a parallax scrolling effect.
This is the javascript I'm using for the parallax effect:
$(window).scroll(function(e){
parallax();
});
function parallax(){
var scrolled = $(window).scrollTop();
$('.bg').css('top',-(scrolled*-0.7)+'px');
$('.stairs').css('top',-(scrolled*-0.5)+'px');
}
And here's a simplified version of my page with placeholder graphics on a jfiddle: http://jsfiddle.net/4spur9ch/
You can see what I mean by slightly scrolling down, then right clicking inside the result box, then going to This Frame > Reload Frame
This is the last kink that needs to be worked out before I can continue. Any help would be greatly appreciated.
Edit: It's possible it could have something to do with the 'top' in the javascript, but removing it causes problems.
$(window).scroll(function(e){
parallax();
});
/*Needed to add this line:*/
$(window).trigger("scroll")
function parallax(){
var scrolled = $(window).scrollTop();
$('.bg').css('top',-(scrolled*-0.7)+'px');
$('.stairs').css('top',-(scrolled*0.3)+'px');
}
I have been working on getting this seat mapping chart for a while and have created a few iterations, and the problem I keep finding is when I get to IE8 the panning for this is way to slow and delayed.
What I have at this point to cut down on load time is created a png to replace my "strokes" since I assume ie8 wanted to re-render each time I dragged the map.
I also added controls hoping to force IE8 users this option, but still there is a delay in the pan, and if I can have users with IE8 (and ie7 if possible) still drag/pan without the controls and the respond time a little faster that would be great.
Here is my current JSFiddle
I am still a little green with JS so if you have any suggestions it would be much appreciated. (PS Chrome frame is awesome but is not a option for me)
Update
I have removed the original dragging function and replaced the code using jqueryui's draggable function. Martin had suggested to just drag the div, and not the Raphael elements. Doing so lets this thing fly in ie6-8 which is great, but then came my concern about scaling. What I was seeing before on zoom my paper element WxH would stay the same ratio, cutting off my drawing when it zoomed in. After digging through the Raphael documentation I came across paper.setSize. setSize was exactly what I needed to allow this project to move and groove in ie6-8 and pretty much conquer all browsers in its path.
So in short, using jqueryui's draggable and paper.setSize has cured my cross browser zoom n' pan blues.
From what can be seen in the Fiddle, you are triggering a new rendering of the image by calling .translate() inside of a mousemove event handler:
mapContainer.translate(currentMapPosX, currentMapPosY);
rsrGroupies.translate(currentMapPosX, currentMapPosY);
This approach is toxic for performance in all browsers, let alone IE8. When dealing with VML in IE8 you should consider that each and every DOM change inside the image will result in the image being rendered again. Doing that while panning will always be painfully slow.
I see that you are already using jQuery in your Fiddle. If you want to increase performance of your panning, you should consider doing the following:
Render the image in Raphaël exactly once for the current zoom level. Do not attempt to change transformations in your VML/SVG image at any point in time while panning.
With the mousemove implementation of panning you already have, move or scroll the HTML container that holds your VML/SVG image instead. Imagine a <div> with overflow: hidden and simply move the image inside relatively, or scroll to the appropriate position.
This will require some adjustment of your coordinate calculations, but it will improve your performance in all browsers.
We have a simple modal in our web application.
It's nothing special and is built on twitters bootstrap library.
It contains a backdrop that is a semi transparent white background with position: fixed and width and height set to 100%.
The modal itself, however, is not statically positioned but absolutely positioned, this is because the modal might be taller than the viewport and we don't want scrolling in the modal.
Here's the dilemma, when the backdrop is present the scrolling is far from smooth in Google Chrome, if I change the position of the backdrop to absolute everything is fine.
This has the obvious downside of not covering the entire page.
I tried to reproduce it with a JSFiddle but I couldn't (most likely due to the fact that we a lot more content on our site).
Nonetheless here is my attempt: http://jsfiddle.net/LdC4w/
So, any ideas?
Oh, and I can add that having a background image instead of opacity is not an option.