I am using a canvas to present several UI components. I am setting canvas.title to present the help for each component.
...
if(mouse.y >= y && mouse.y <= y + w && mouse.over){
if(currentId !== tool.id){
canvas.title = tool.help;
}
currentId = tool.id;
...
The problem is that when the mouse moves the tool tip is hidden and will not re display until I move the mouse out and then move back onto the canvas.
I would like to change the behaviour so that the tool tip displays again when I hover over another UI component without leaving the canvas element?
Implementing your custom tooltip gives more freedom and control.
This is a simple example http://jsfiddle.net/mynetx/5qbP3/
You can take ideas and build from here. Another advantage is control over the CSS which in cases like yours, where you want to provide help.
window.addEventListener("load", function () {
var couponcodes = document.getElementsByClassName("couponcode");
for (var i = 0; i < couponcodes.length; i++) {
couponcodes[i].addEventListener("mouseover", function () {
var coupontooltip = this.getElementsByClassName("coupontooltip")[0];
coupontooltip.removeAttribute("style");
});
couponcodes[i].addEventListener("mouseout", function () {
var coupontooltip = this.getElementsByClassName("coupontooltip")[0];
coupontooltip.style.display = "none";
});
} });
Tooltips are part of the system the browser runs in and sadly aren't accessible in any way from JavaScript.
I would recommend implementing your own tooltip, which is not very hard (both on canvas and using an extra element).
If you are worried about accessibility—it's possible to give an element "tooltip" role: http://accessibility.athena-ict.com/aria/examples/tooltip.shtml
You can use fabric.js. see this.
Related
I am making a custom slider.
All the things works find. But as of now I also want to add ontouch, ontouchmove functionality. I have almost achieve but something is still wrong that's why I am not able to achieve it completely.
Code Snippet
function onDragAction (e) {
e = e || window.event;
if (e.type == 'touchmove') {
caouselPosX2 = caouselPosX1 - e.touches[0].clientX;
caouselPosX1 = e.touches[0].clientX;
} else {
caouselPosX2 = caouselPosX1 - e.clientX;
caouselPosX1 = e.clientX;
}
carouselInneritems.style.transform = 'translateX(' + (carouselInneritems.offsetLeft - caouselPosX2) + 'px)';
}
Kindly try the demo on inspect with mobile resolution.
CodePen
I've had a play around with this and there are two main issues as far as I can see.
onDragAction() needs to call e.stopPropagation() - in the demo you posted it is being called every time a new slide enters underneath the mouse, but you only want it to be called once. This fixes a lot of the glitchiness for me.
You need to have some conditional logic to express what direction you want the slider to go in. At the moment it is calculated by subtraction in every case, which from what I've put together from reading your code means it will always go to the left.
I have two images with same dimensions and same positions, but placed in divs with dynamic width depending on user interaction using the jquery beforeAfter plugin.
I would like to enable scroll zooming on these images using wheelzoom, such that zooming on one of these images will zoom the same amount in the same position as the other.
What I am unable to do is this linking of (I suppose) the event handlers along the lines of this:
function onwheel(e){
//adjust image to fit zoom level ...
other_img.onwheel(e);
}
If this is not possible, is it possible to copy the event and change the target image?
I am looking for a solution using either jquery or native Javascript.
Code here (ignore the handle).
EDIT: Any top-level pointers to what should work would also be appreciated
I made a worked example: http://plnkr.co/edit/kH0ec8TVMXUIYlMoBaMq?p=preview
here is the core code:
document.getElementsByClassName("before")[0].addEventListener("wheel", function(event){
if(flag){
flag= false;
return;
};
flag=true;
var newEvent = new WheelEvent("wheel",event);
var elementToTrigger = document.getElementsByClassName("after")[0];
elementToTrigger.dispatchEvent(newEvent);
});
I do something simple, when an event happening("wheel") a trigger the same event to another element and pass as argument the data from the first event to the new event. I use flag variable to deter the custom event trigger again the other event and start an eternal loop.
This is a solution without to edit the source code of plugin. You can do more good solutions if you change the code of wheelzoom.js.
Make the zooming a function that takes enough parameters to handle zooming, and get the values you need from the event handler.
function handleZoom(domNode, zoomDirection, zoomAmount) {
// Do stuff to change the size of `domNode`
}
var img1, img2;
img1 = /* select image node */;
img2 = /* select image node */;
function handleScroll(scrollEvent) {
var direction, amount;
// Use `scrollEvent` to figure out which direction and how far to zoom
handleZoom(img1, direction, amount);
handleZoom(img2, direction, amount);
}
img1.onscroll = handleScroll;
img2.onscroll = handleScroll;
I'm writing a vb.net program to automate and manage an online game. I'm using the Awesomium webcontrols to display and manipulate the pages of the game.
There is a point where I need to grab the data that's not shown in the source until the user hovers over a certain element, how can I use javascript (Not jquery please) to hover over it programatically until the data I need becomes available and then grabbed?
I apologise if this has been asked before (Which it has but from the perspective of someone who owns the web page) but I have been searching for hours for a solution and cant find anything.
What I've tried to use but failed is:
function findBpDate(){
document.getElementById('tileDetails').children[1].children[0].children[1].children[0].fireEvent('onmouseover');
return document.getElementsByClassName('text elementText')[0].textContent;
}
This returns "undefined" when it calls back to my application, I'm certain I'm pointing to the right DOM elements though.
This is what I want the javascript to "hover" on:
<span class="a arrow disabled">Send troops</span>
Once this element has been "hovered" on, this elements text changes to the text I need to grab:
<div class="text elementText">Beginners protection until 20/07/13 07:51 am.</div>
I've shown above what the element looks like when the mouse "hovers" on the element I need it to, however this changes a lot depending on which element the user hovers over while playing the game, from what i gather it's where the source keeps the text for each tooltip in the game.
So I need a function that will hover over a certain element and then while it's hovering, grab the text from the tooltip text/"text elementText" element.
Try WebView.InjectMouseMove(x, y).
Something like
public Point GetElementPosition(dynamic element)
{
dynamic rect = element.getBoundingClientRect();
using (rect)
{
return new Point(rect.left, rect.top);
}
}
dynamic element = webView.ExecuteJavascriptWithResult("document.getElementById('id')");
Point pos = GetElementPosition(element);
webView.InjectMouseMove(pos.X, pos.Y);
this is 10x easier with js/dom. http://jsfiddle.net/pA2Vd/
Do this...assuming you can get reference to elements somehow using by Id would have been lot easier.
var elm = document.getElementsByClassName('a arrow disabled')[0];
var txt = document.getElementsByClassName('text elementText')[0];
var evt = new Event('mouseover');
elm.dispatchEvent(evt);
var status = txt.innerText;
(helpfuL stuff down) otherwise you need to capture event, detect who fired it, check if that has this class and tag name. Lot of processing.
var txt,spn,status='';
document.getElementByTagName('span').forEach(function(d){
if (d.tagName=="div" && d.className == 'text elementText'){
var txt = d;
}
}
window.onmouseover = function(e) {
var elm = e.target;
if (elm.tagName=="SPAN" && elm.className == 'a arrow disabled') {
status=txt.innerText;
}
}
I want to drag and drop images into an aloha editable field.
I am looking at the at.tapo.aloha.plugins.Image plugin which seems great.
However, i need to adapt this plugin in order to work with thumbnail. I drag the thumbnail and when I drop it into the aloha editable, the html code is modified on the fly in order to use the real image.
GENTICS.Aloha.EventRegistry.subscribe(GENTICS.Aloha, 'editableCreated', function(event, editable) {
var the_obj = editable.obj;
jQuery(editable.obj).bind('drop', function(event){
var e = event.originalEvent;
var files = e.dataTransfer.files;
var count = files.length;
if (count < 1) {
var node = e.dataTransfer.mozSourceNode;
if (node.tagName === 'IMG') {
var html = '<img ....>'; //build the real image html code
/// The current selection but I want the drop position
var range = GENTICS.Aloha.Selection.getRangeObject();
if (!jQuery.isEmptyObject(range)) {
GENTICS.Utils.Dom.insertIntoDOM(jQuery(html), range, the_obj);
}
return false;
}
return true;
}
}
It works ok when something is selected in the aloha field. I can get a range and insert the html into the DOM at the selection position.
However, I would like to get a range object that correspond to the place where my image is dropped. How to do that?
Thanks in advance for ideas.
There isn't an easy way that I know of to do this in general. You could obtain pixel coordinates for the drop point (possibly from a mousemove event) and then attempt to get a range for that point. For that task, the answer to the following question sums it up nicely:
Creating a collapsed range from a pixel position in FF/Webkit
Tim Down showed me that there is no easy way and I finally used a workaround:
GENTICS.Aloha.EventRegistry.subscribe(GENTICS.Aloha, 'editableCreated', function(event, editable) {
var the_obj = editable.obj;
jQuery(editable.obj).bind('drop', function(event){
setTimeout(function () {
//at this point the html is updated and can be postprocessed
//in order to turn thumbnails into the real image
//force the focus in order to make sure that the editable is activated
//this will cause the deactivated event to be triggered, and the content to be saved
the_obj.focus();
}, 0);
});
});
The best way to understand this is to look at this fiddle.
Notice how mouse wheel over the fixed content in the red box does nothing. I would like the scrollable div to scroll.
In case the fiddle dies - basically I have a scrollable div with a fixed element over it. Typically when you mouse wheel over a scrollable div it will of course scroll. But if you are over the fixed element instead then no scroll happens. Depending on your site layout this could be counter intuitive to a user.
jQuery solutions are okay.
A much, MUCH simpler, but much less widely supported, answer is the following:
#fixed{ pointer-events:none; }
jsFiddle
Doesn't work in IE at all though unfortunately! But you could use modernizr or somesuch to detect whether it was supported and use the jQuery as a stop-gap where it isn't.
Courtesy of Mr. Dominic Stubbs
I had this problem and this works for me (using jquery):
$(document).ready( function (){
$('#fixed').on('mousewheel',function(event) {
var scroll = $('#container').scrollTop();
$('#container').scrollTop(scroll - event.originalEvent.wheelDeltaY);
return true;
});
});
Works on Safari and Chrome: http://jsfiddle.net/5bwWe/36/
I think this does what you're asking for!
$('#fixed').bind('mousewheel', function(e){
var scrollTo= (e.wheelDelta*-1) + $('#container').scrollTop();
$("#container").scrollTop(scrollTo);
});
EDIT: Updated the jsFiddle link to one that actually works
DOUBLE EDIT: Best to dispense with the .animate() on further testing...
jsFiddle Example
TRIPLE EDIT:
Much less pretty (and will probably be horribly slow with a lot of elements on the page), but this works and I owe a lot to this stackoverflow answer.
$('#fixed').bind('mousewheel', function(e) {
var potentialScrollElements = findIntersectors($('#fixed'), $('*:not(#fixed,body,html)'));
$.each(potentialScrollElements, function(index, Element) {
var hasVerticalScrollbar = $(Element)[0].scrollHeight > $(Element)[0].clientHeight;
if (hasVerticalScrollbar) {
var scrollTo = (e.wheelDelta * -1) + $(Element).scrollTop();
$(Element).scrollTop(scrollTo);
}
});
});
function findIntersectors(targetSelector, intersectorsSelector) {
var intersectors = [];
var $target = $(targetSelector);
var tAxis = $target.offset();
var t_x = [tAxis.left, tAxis.left + $target.outerWidth()];
var t_y = [tAxis.top, tAxis.top + $target.outerHeight()];
$(intersectorsSelector).each(function() {
var $this = $(this);
var thisPos = $this.offset();
var i_x = [thisPos.left, thisPos.left + $this.outerWidth()]
var i_y = [thisPos.top, thisPos.top + $this.outerHeight()];
if (t_x[0] < i_x[1] && t_x[1] > i_x[0] && t_y[0] < i_y[1] && t_y[1] > i_y[0]) {
intersectors.push($this);
}
});
return intersectors;
}
UPDATE (August 2016): It seems the browser implementations have changed and it's no longer possible to re-dispatch a WheelEvent on a different target. See the discussion here.
For an alternative solution that should work across platforms, try this:
var target = $('#container').get(0);
$('#fixed').on('wheel', function (e) {
var o = e.originalEvent;
target.scrollTop += o.deltaY;
target.scrollLeft += o.deltaX;
});
Working example: https://gist.run/?id=6a8830cb3b0564e7b16a4f31a9405386
Original answer below:
Actually, the best way to do it is to copy the original event. I've tried #Tuokakouan's code but scrolling behaves strangely (too fast) when we use a multitouch touchpad that has inertia.
Here's my code:
var target = $('#container').get(0);
$('#fixed').on('wheel', function(e){
var newEvent = new WheelEvent(e.originalEvent.type, e.originalEvent);
target.dispatchEvent(newEvent);
});
You can try it here: http://jsfiddle.net/NIXin/t2expL6u/1/
What I'm trying to do now is also to pass the touch events, without much success. Since mobile phones and touch screens are now more popular, some people might want to scroll using their fingers instead - neither of the answers offered solves that.
Well,all solutions with js are kind of delayed when scrolling on it. if the fixed element you use is just for display, then I have a good css tricks to achieve that.
make the fixed element z-index:-1 and the container element background-color:transparent
here is the jsfiddle you can see: https://jsfiddle.net/LeeConan/4xz0vcgf/1/