I'm creating a help page for a game I've developed in CreateJS. The help page is done in plain html. I would like to populate some Image elements in the help page with data from EaselJS.bitmap instances originating in the game. What's the best approach for this?
The Bitmap instances use HTMLImageElements to draw.
If you already have Bitmap instances generated, you can access bmpInstance.image. This is probably the best approach if you create your Bitmaps with a string path.
var bmp = new createjs.Bitmap("path/to/image.jpg");
document.body.appendChild(bmp.image);
If you are preloading using PreloadJS, you can get the result the same way as you use to populate a Bitmap:
var img = queue.getResult("imageId"); // <-- That is an image element
Hope that helps!
Related
I've started working with Dragula and I'm having elements be moved from one box to another. However, I want to be able to click a button and have the Dragula elements be placed back where they were before, basically resetting it. I've looked around for a solution but I can't seem to find any anywhere, so if anyone can help me with this I'd appreciate it.
You are going to want to pull out the HTML data from the two boxes compile the data and reset then second box.
// reset toppings using JQuery each() method
$("#box2").each(function () {
$("#box").append(this);
});
Hope this helps, just remember all you and doing is targeting the box2 and pulling out the information.
Here is another version that is not quite as clean but easier to follow:
var dragged = $("#box2").html();
var notDragged = $("#box1").html();
var original = dragged + notDragged ;
$("#box1").html(original);
$("#box2").html("");
I am using the vue-masonry plugin which let me create a masonry grid easily.
I created a system of infinite loading where you scroll to the bottom of the page and it append new pictures to an array binded with the vue-masonry plugin.
The problem happen when I created a system of polling for the new pictures that were upoaded by other users. Those new pictures need to be at the top of the masonry grid.
The plugin use two Vue Directive masonry (parent) and masonryTile (element). masonryTile has a v-for which loop through the array binded with my Vue instance (which does all the heavy lifting, preloading, sanityzing, etc...).
Is there a way in the directives to know the differences between something being appended or prepended? And try to react differently (I know masonry has some append/prepend method) but in here and with this plugin, the items where already added (at the beginning so the prepend works with Vue) but there's no masonry interaction nor redraw (I tried to use the prototype to trigger the redraw this.$redrawVueMasonry();).
So I don't know what's next to do. Continue finding a way to differentiate a prepend from a append and trying to bind it to the respective masonry's methods ? Or another method that I didn't think of...
Thanks in advance for you help
Ps : I don't think my code is really relevant since It's more a way to optimize the plugin. If you want some specific part of my code anymay, tell me in the comment !
This probably comes a bit too late, this being a 10 month old question.
However vue-masonry is able to handle situations where items are spliced anywhere in the array. But to properly update the grid this.$redrawVueMasonry() should be called inside this.$nextTick() like this:
this.$nextTick(() => this.$redrawVueMasonry());
Hope this helps, if not the original poster, someone else.
I'd like to check whether the user can see an element in the current web browser view without scrolling.
What I've found can check whether the element is somewhere on the page.
Another hint suggested to check the elements position but then I would need to get the dimensions of the visible window of the browser plus its x/y offset to 0/0.
I would be grateful if someone could point me to a solution that does not need JavaScript code.
How do you define 'visible to the user'? How do you propose to check it?
If it has a height? If it isn't hidden by CSS? What if it's parent element is hidden by CSS?
The most reliable way will be to use Selenium's built in .Displayed property (if you are using C#, Java has something similiar), and combine it with jQuery's 'visible' selector: http://api.jquery.com/visible-selector/. Example below, in C#.
var element = Driver.FindElement(By.Id("test"));
bool isVisible = element.Displayed;
var javascriptCapableDriver = (IJavascriptExecutor)Driver;
bool jQueryBelivesElementIsVisible = javascriptCapableDriver.ExecuteScript("return $('#myElement').is(:visible);");
bool elementIsVisible = isVisible && jQueryBelievesElementIsVisible;
This will get the majority of cases.
It isn't possible without client side code, or in the preparation that someone else finds a way that it can be done in a server side language, I highly doubt it will be pretty, readable or reliable.
jQuery has the offset() method:
http://api.jquery.com/offset/
This, however, won't work when taking into account borders, margins, that kind of stuff.
I am now trying to implement lazyload onto my website.
I have successfully got lazy load working on pages that have a static gallery.
The main portfolio of the website has a large list of images that can be filtered using the javascript library Isotope.
The lazy load works fine when filtering is not in used, however, if the page loads and I don't scroll, but filtering is used, the items which are brought into view don't resolve. I found that occasional images worked, but most don't.
Any suggestions on how to fix this?
Presumably i need to be able to do something that will re-trigger lazy load to refresh or recheck itself?
Here is the gallery I am trying to get working, where you can see the issues I am having: http://www.imageworkshop.com/lazyload-portfolio/
Anyone able to help?
call this code on filtered item is clicked: $(window).trigger('scroll');
I found this answer from acarabott - https://stackoverflow.com/a/13919010/735369
I have implemented this and this has worked.
The only issue is that the refresh doesn't happen until a scroll action takes place.
If you want to use isotope's sorting/filtering functions, you will need to set the failure_limit of lazyload and trigger the event with isotope's onLayout callback.
jQuery(document).ready(function($) {
var $win = $(window),
$con = $('#container'),
$imgs = $("img.lazy");
$con.isotope({
onLayout: function() {
$win.trigger("scroll");
}
});
$imgs.lazyload({
failure_limit: Math.max($imgs.length - 1, 0)
});
Explanation
According to the docs ( http://www.appelsiini.net/projects/lazyload )
After scrolling page Lazy Load loops though unloaded images. In loop it checks if image has become visible. By default loop is stopped when first image below the fold (not visible) is found. This is based on following assumption. Order of images on page is same as order of images in HTML code. With some layouts assumption this might be wrong.
With an isotope sorted/filtered list, the page order is certainly different from the HTML so we need to adjust our failure_limit.
As you can see we store the jQuery object so that we can use its length-1 as our failure_limit. If you're curious as to why it is length-1, it's because of the following check in lazyload's update method.
if (++counter > settings.failure_limit) {
return false;
}
Lazy load on other events
If you are not triggering your lazyloads on scroll, you will need to swap the "scroll" trigger for whichever event you are using.
Demo
http://jsfiddle.net/arthurc/ZnEhn/
I'm trying to create a dynamic input element that is draggable. Now the problem is I create an element but when I use something like
$("#in"+index.toString()).draggable({cancel:true});
after I append it to the container div, it's not working. Basically it's not working for the dynamically created input element of a certain id. Here's the code and please feel free to point out problems. I could really use some help on this one. Thanks!
http://jsfiddle.net/ithril/hRCun/5/
The problem is that you are creating a new element that is not bound to the UI functions. I would suggest using clone(true,true) and then changing the parameters of the cloned element as need be. You can learn more about clone here. http://api.jquery.com/clone/