I'm trying to create a poker web app using an poker library (http://tairraos.github.io/Poker.JS/)
One of the methods to render a card image is using this function:
getCardImage: function(size, suit, point) {
var image = document.createElement('img');
image.src = this.getCardData(size, suit, point);
return image;
},
It creates an image using canvas and places inside an img tag. I've been trying to place it inside a div, like:
$('#flop').append(Poker.getCardImage(60, 'hearts', 'j'));
but to no avail. The only way it renders normally is using:
document.body.appendChild(Poker.getCardImage(100, 'h', 'Q'));
I really run off of ideas of how to pull this out. I've tried many JQuery methods and nothing worked. I see on the network tab of chrome that the image is created using a base64, but when I try to place it inside a div, nothing appears. Only if appends to the end of the body.
Can someone lend me a help here?
tnx
I think you should just have to change your getCardImage function to return a jQuery Element instead of an HTML element. Try this:
getCardImage: function(size, suit, point) {
var image = '<img src="' + this.getCardData(size, suit, point) + '" />';
return $(image);
}
Then your jQuery append should work:
$('#flop').append(Poker.getCardImage(60, 'hearts', 'j'));
Related
I try create a quick prototype where user can see how an animation has looked like in the past. For this I need a screenshot gallery. So far I have in my HTML:
<div id="screenshot"></div>
This function is called based on some events:
function handlePicture() {
console.log("Greetings from server");
var img = document.createElement("img");
img.src = renderer.domElement.toDataURL(); // catching the Three.js scene as image
var src = document.getElementById("screenshot");
src.appendChild(img);
}
This shows the current screenshot. Great! But I want to have 10, 20, 300 or more of them, so that the screenshot is not replaced but a new image is appended next to it.
I would want the animation's timeline to be presented as a gallery, maybe with the help of CSS galleries https://www.w3schools.com/css/tryit.asp?filename=trycss_image_gallery_responsive
I would need help with the next steps. How could each function call save renderer.domElement.toDataURL(); as a new image and create an element for it? I'm confused if I should make a new div for every image or put them all under div "screenshot". Many thanks!
I have set up a pen to demonstrate creating an image element with a button.
renderer.domElement.toDataURL() Is an async function so you would need to wrap it in a callback function.
var imgBtn = document.getElementById("addImage");
document.addEventListener("click", function(){
var newImage = document.createElement("img")
document.body.appendChild(newImage)
newImage.setAttribute("src",
"https://via.placeholder.com/150/0000FF/808080%20?
Text=Digital.com%20C/O%20https://placeholder.com/)")})
https://codepen.io/sijbc/pen/MWJeveL
I have a problem with some image change when clicking on a tab.
Problem is with the arrow image, currently its coming with jQuery like this
$('.toggle_title').prepend('<img class="tab-open" src="my_url" />');
So what I need is that, when the tab is open, image changes itself to "tab-close.png" (flipped arrow). Opened tab has an extra class '.toggle_active' (previous class .toggle_title still stays). I have tried something like this, but its not working, can somebody help?
if($('.toggle_title').hasClass('toggle-active')) {
$('.toggle_active').prepend('<img class="tab-open" src="my_url" />')
}
else {
$('.toggle_title').prepend('<img class="tab-open" src="my_url" />')
}
Working with HTML in strings is an anti-pattern. First create an image element:
// You should NOT hardcode this value, this must come from WordPress,
// but that's for a different topic. See `wp_localize_script` to learn more
// http://codex.wordpress.org/Function_Reference/wp_localize_script
var url = 'http://creativeagency.ee/holi/wp-content/themes/bones/library/images/'
var $img = $('<img>', {
'class': 'tab-open',
src: url +'tab-open.png'
})
Next append the image:
$('.toggle_title').prepend($img);
Now, since you have a reference to image, you can easily change its src attribute when you need:
var $title = $('.toggle_title') // chache your elements!
if($title.hasClass('toggle_active')) { // typo!
$img.attr('src', url +'tab-close.png')
} else {
$img.attr('src', url +'tab-open.png')
}
This should help you out, although it is still probably not the perfect abstraction. You may want to have the possible images in an array, and toggle them a different way:
var srcs = ['tab-close.png','tab-open.png']
$img.attr('src', url + srcs[+$title.is('.toggle_active')])
The above does the same but a bit terser, by casting the boolean to a number, and using is instead of hasClass.
Please bear with me I am brand new to learning javascript (self taught)! I am usually one to find answers on my own from just web browsing but so far I haven't found any resources explaining how to accomplish the following:
So, basically all I want to do is change this (HTML):
SPEAKERS
to an image by using javascript.
The image is kept in the same folder as the html and the js.
Here is as far as I know to go with the javascript:
function showImage()
{
picture = new Image(100,100);
picture.src = "icon2.png";
document.getElementById("speakers").innerHTML = picture.src;
}
function goBack()
{
document.getElementById("speakers").innerHTML="SPEAKERS";
}
For clarity, all I would like to do is change the text ("SPEAKERS") to an image using 'onmouseover' while using the same hyperlink in the process.
It seems like a very simple problem but I don't know enough to determine if what I want to do is even possible. If it's not possible that's fine, I would just like to know either way ;P. Thanks ahead of time!
If you're ok with using jquery, you could use .html() and .hover()
http://jsfiddle.net/u8fsU/
Try something like this to get you started (not a complete nor tested solution):
var showImage = function(){
var picture = document.createElement("img");
picture.src = "icon2.png";
picture.href = "link.html";
var speakers = document.getElementById("speakers");
speakers.parentNode.replaceChild(speakers, picture);
}
Please see https://developer.mozilla.org/en-US/docs/Gecko_DOM_Reference for a good reference to some of the available DOM properties and methods.
I've got a pretty simple problem, but I've become clueless on what is causing the problem. In one of my applications I'm using jCrop as a small add-on to crop images to fit in banners/headers etc. These steps will be taken:
1) Select an image (using CKFinder for this, CKFinder returns the image path to an input field)
2) Click a button to load the image
3) Crop the image
4) Save the image
in about 75% of the cases everything goes according to plan, however the in the other 25% of the cases jCrop fails to load the cropping area and leaves it blank. Here's the jQuery code I'm using:
jQuery('#selectimg').live('click', function(e) {
e.preventDefault();
var newsrc = jQuery('#img2').val();
jQuery('#cropbox').attr('src', newsrc);
var jcrop_api = jQuery.Jcrop('#cropbox', {
boxWidth: 700,
boxHeight: 700,
onSelect: updateCoords,
onChange: updateCoords
});
//Some other JS code come's here for buttons (they work all the time)
});
I noticed that when I left the part away where #cropbox is being transformd in a cropable area, that the image is loading just fine, so the mistake lies with the var = jcrop_api part, but I slowsly start to think that there is no solution for this...
This is what I've tried so far:
Making a div <div id="cropper-box"></div> and use jQuery('#cropper-box').append('<img src="" id="cropbox" />'); and afterwards set the value. I tried the same thing but setting the image src in 1 step instead of afterwards.
I tried to put a placeholder on the page <img src="placeholder.png" id="cropbox" /> and change the source upon clicking the button. This works, but the cropperarea stays the size of the image (300x180px or something) and doesn't get bigger as it should.
// Edit:
Trying some more showed me that the image source is being replaced properly(! using Firefox to show the source for the selected text), I double checked the URL but this was a correct URL and a working image.
At the place where the cropper should be, there's an about 10x10 pixel white spot where the cropper icon (a plus sign) is popping up.. but as said before: the image isn't shown.
// Edit 2:
So I've took the sources for both the 1st and the 2nd try for the same image. As told before the first try the image won't load properly and the 2nd try it does (only when the 2nd try is the same image(!!)).
The selected page source shows 1 difference which is, first try:
<img style="position: absolute; width: 0px; height: 0px;" src="http://95.142.175.17/uploads/files/Desert.jpg">
second try:
<img style="position: absolute; width: 700px; height: 525px;" src="http://95.142.175.17/uploads/files/Desert.jpg">
I guess this is the image that's being replace by jCrop, but it's a complete riddle why it puts 0 heigth/width in there the first and the proper sizes the second time.
Okay guys, in case anyone else runs into this problem:
jCrop kinda gets messed up if the actions of loading an image and applying jCrop to it are queued too fast after eachother. I still find it strange that a second attempt works perfect, but I think that has something to do with cached image dimensions which are recognized by the DOM of the page or something.
The solution I came up with was by creating a function that converts the #cropbox into a jCrop area and then setting a 2 second interval, just to give jCrop some time to recognize the image and it's dimensions and then convert the element.
This is the part of html I used (with a preloader):
<div id="cropper-loading" style="display: none;"><img src="images/analytics/ajax-loader.gif" /></div>
<img id="cropbox" src="images/placeholder.png" style="display: none;" />
As you can see both the cropbox image and cropper-loading div are hidden as they are not needed instantly. You could display the placeholder if you wanted though.. Then this HTML form is used:
<input name="image2" id="img2" type="text" readonly="readonly" onclick="openKCFinder(this)" value="click here to select an image" style="width: 285px;" /> <button class="button button-blue" type="submit" name="load" id="selectimg">Load Image in cropper</button>
In my case I've been using KCFinder to load the images (it's part of CKEditor, really worth watching into!), KCFinder handles uploads, renaming etc and after choosing it returns the chosen image path (relative/absolute is configurable) to the input field.
Then when clicking #selectimg this code is called:
jQuery('#selectimg').click(function(e) {
e.preventDefault();
jQuery('#cropper-loading').css('display', 'block');
var newsrc = jQuery('#img2').val();
jQuery('#cropbox').attr('src', newsrc);
jQuery('#img').val(newsrc);
function createJcropArea() {
jQuery('#cropper-loading').css('display', 'none');
jQuery('#cropbox').css('display', 'block');
var jcrop_api = jQuery.Jcrop('#cropbox', {
boxWidth: 700,
boxHeight: 700,
onSelect: updateCoords,
onChange: updateCoords
});
clearInterval(interval);
}
var interval = setInterval(createJcropArea, 2000);
});
At first I prevent the link too be followed as it normally would (or button action) and after that the loading div is displayed (that's my reason for hiding the placeholder image, otherwise it would look messed up).
Then the image location is being loaded from the input field and copied into another (#img), this field is used to process the image afterwards (PHP uses the value of #img to load this image). Also simultaneously the #cropbox src is being set to the new image.
And here comes the part which solved my problem:
Instead of directly activating jCrop, I've made a function that:
1) hides the loading icon
2) displays the image
3) converts #cropbox into a jCrop area
4) clean the interval (otherwise it would loop un-ending)
And after this function you can see that, just to be save, I took 2 seconds delay before the jCrop area is being converted.
Hope it helps anyone in the future!
Cheers and thanks for thinking #vector and whoever else did ;-)
Creating an 'Image' object and setting up the 'src' attribute does not apply that you can treat the image like it had already been loaded.
Also, giving any fixed timeout interval does not guaranty the image has already been loaded.
Instead, you should set up an 'onload' callback for the Image Object - which will then initialize the Jcrop Object:
var src = 'https://example.com/imgs/someimgtocrop.jpg';
var tmpImg = new Image();
tmpImg.onload = function() {
//This is where you can safely create an image and a Jcrop Object
};
tmpImg.src = src; //Note that the 'src' attribute is only added to the Image Object after the 'onload' listener was defined
Try the edge library on the repo here: https://github.com/tapmodo/Jcrop
This should solve your problem. The lines that are changed to solve your problem:
// Fix size of crop image.
// Necessary when crop image is within a hidden element when page is loaded.
if ($origimg[0].width != 0 && $origimg[0].height != 0) {
// Obtain dimensions from contained img element.
$origimg.width($origimg[0].width);
$origimg.height($origimg[0].height);
} else {
// Obtain dimensions from temporary image in case the original is not loaded yet (e.g. IE 7.0).
var tempImage = new Image();
tempImage.src = $origimg[0].src;
$origimg.width(tempImage.width);
$origimg.height(tempImage.height);
}
Don't call this function onChange : updateCoords
Try it without and it will run smooth on mobiles.
You can create base64 directly and show them as an image wherever you want.
Here my weird but fantastic solution:
if (obj.tagName == 'IMG') {
var tempImage = new Image();
tempImage.src = $origimg[0].src;
$origimg.width(tempImage.width);
$origimg.height(tempImage.height);
if ($origimg[0].width > 1 && $origimg[0].height > 1) {
$origimg.width($origimg[0].width);
$origimg.height($origimg[0].height);
} else {
var tempImage = new Image();
tempImage.src = $origimg[0].src;
$origimg.width(tempImage.width);
$origimg.height(tempImage.height);
//console.log('error'+$origimg[0].width + $origimg[0].height);
}
I know this is old, but it was happening randomly to my install recently. Found that it was due to images not being full loaded before before jCrop intialized.
All it took to fix it was wrapping the jCrop initialization stuff inside of a
$(window).on("load", function () { //jcrop stuff here });
And it has been working well since.
I am creating this custom theme www.designislikethis.tumblr.com, which uses the jQuery Masonry and the Slider plugins. In creating this theme I wanted to create my own photoset slideshow instead of messing around with the default Flash-based one.
I started by pulling the images from the JSON of each photoset post by the post's ID using JS and jQuery.
I then rendered these images onto my frontpage in a special div that is linked to a minimal jQuery slideshow plugin, so each image fades in and out.
The code I use to pull/render for each photoset post is as follows:
function photoSet() {
$('.photoset').each(function () {
var postID = $(this).attr('id');
var that = $(this);
$.getJSON("http://designislikethis.tumblr.com/api/read/json?id="+postID+"&callback=?",
function(data) {
var postPhotos = data["posts"][0]["photos"];
var postPermalink = data["posts"][0];
for(var i = 0; i<postPhotos.length; i++)
{
var photo250 = new Image();
photo250.src = postPhotos[i]['photo-url-250'];
postLink = postPermalink["url-with-slug"];
var setClass = ".photoset"+ i;
var imgClass = ".img"+ i;
$(that).find('.slide').append('<a class="'+ setClass +'" href="'+postLink+'"><img class="'+ imgClass +'" src="' +photo250.src+ '"/></a>');
}
});
});
}
Now my problem lies in that all the other elements on my tumblr index page are not rendered with JSON, so they load faster. By the time my photo set renders it's divs are unproportional to everything that has loaded around it, and so the image slider wont kick in and you are left with a mess of rendered images.
What's most annoying about this problem is that some times it works fine, and others it's a mess, depending on how fast the page loads, or if you have the website already cached in your browser.
To see the extent of my Javascript and how I am calling this photoset funciton see here:
http://helloauan.com/apps/DILTtheme/utils.js
I know it's a little messy, for I am new to all of this. :)
Thanks.
I don't know if it will help, but you could try the following:
If the images are the same size and you know that size set the ".slide" div to that;
Try preloading the images and only starting the slide show when they are loaded. e.g using a preload plug-in.
and making use of the "callback" function.