I'm working on my portfolio and need help to #blind an element and change style property at bottom element at same time.
The idea is to exist a fixed space between the two elements, like this one EXAMPLE
If u see the example when you click, a bar appears and the space between two remains. Then if u click again the element hide and the space remains the same!!
"#contacts" -> element i want to blind
"#line" -> element i want change the top property
Im trying to resolve using jquery function called "blind":
$("#contacts").toggle("blind", {direction : "vertical"}, 500);
Then i get the top value of #line with if:
var line = $( "#line" );
var position = line.position();
var top = position.top;
if(top == value){
$("#line").animate({top:'100px'}, time);
} else { ... }
Please help!!
I'd do it without jQuery UI by using the top value and z-index
var contactTop = 85,
nextTop;
$(".oppen").click(function() {
nextTop = nextTop !== contactTop ? contactTop : 5;
$("#contacts").animate({top: nextTop}, 500);
.....
Demo
To stop the queuing you can apply the same technique on #line in addition to using jQuery's .stop
var contactTop = 85,
nextTop,
lineStart = 100,
lineEnd = 180,
lineTop = 100;
$(".oppen").click(function() {
nextTop = nextTop !== contactTop ? contactTop : 5;
$("#contacts").stop().animate({top: nextTop}, 500);
lineTop = lineTop !== lineStart ? lineStart : lineEnd;
$( "#line" ).stop().animate({top:lineTop}, 500);
});
Demo
I have a jquery dialog . I am displaying an asp.net gridview within the dialog.
I want the size of the dialog to change based on the size of the grid view.
There is a button, which shows the dialog when its clicked.
I want to set the size of the dialog such that the gridview fits in it perfectly.
I have my javascript code below :
$("#ViewModalPopup").dialog({
height: 800px,
scrollable: true,
width: 800,
modal: true
});
Here #ViewModalPopup is the div that encloses the modal popup.
I tried implementing the following logic to adjust the height of the dialog based on the size of the div :
var maxHeight = 600;
var currentHeight = $('#ViewModalPopup').height();
if (currentHeight < maxHeight) {
var desiredHeight = currentHeight
}
else
{
var desiredHeight = maxHeight;
}
$("#ViewModalPopup").dialog({
height: desiredheight,
scrollable: true,
width: 800,
modal: true
});
But it is not working as
var currentHeight = $('#ViewModalPopup').height();
is coming out to be null from the second button click onwards.
Is there any way I can change the size of the dialog dynamically ?
Set like
$("#ViewModalPopupDiv1").dialog("option", "maxHeight", 600);
API
/* set dynamic height of modal popup and scroll according to window height */
function setModalMaxHeight(element) {
this.$element = $(element);
this.$content = this.$element.find('.modal-content');
var borderWidth = this.$content.outerHeight() - this.$content.innerHeight();
var dialogMargin = $(window).width() < 768 ? 20 : 60;
var contentHeight = $(window).height() - (dialogMargin + borderWidth);
var headerHeight = this.$element.find('.modal-header').outerHeight() || 0;
var footerHeight = this.$element.find('.modal-footer').outerHeight() || 0;
var maxHeight = contentHeight - (headerHeight + footerHeight);
this.$content.css({
'overflow': 'hidden'
});
this.$element.find('.modal-body').css({
'max-height': maxHeight,
'overflow-y': 'auto'
});
}
$('.modal').on('show.bs.modal', function () {
$(this).show();
setModalMaxHeight(this);
});
$(window).resize(function () {
if ($('.modal.in').length != 0) {
setModalMaxHeight($('.modal.in'));
}
});
I am creating an image hover effect but I am having problem with it. When I hover over certain images, the scrollbars appear which I want to avoid but don't know how to do so. I believe it has to do with viewport and calculations but am not sure how that is done.
Example Here
JSBin Code
Here is the code:
$('.simplehover').each(function(){
var $this = $(this);
var isrc = $this[0].src, dv = null;
$this.mouseenter(function(e){
dv = $('<div />')
.attr('class', '__shidivbox__')
.css({
display: 'none',
zIndex : 9999,
position: 'absolute',
top: e.pageY + 20,
left: e.pageX + 20
})
.html('<img alt="" src="' + isrc + '" />')
.appendTo(document.body);
dv.fadeIn('fast');
})
.mouseleave(function(){
dv.fadeOut('fast');
});
});
Can anyone please help me how do I make it so that hovered image appears at such place that scrollbars dont appear? (Of course we can't avoid scrollbar if image size is very very big)
I just want to show original image on zoom while avoiding scrollbars as much as possible.
Please note that I am planning to convert it into jQuery plugin and therefore I can't force users of plugin to have overflow set to hidden. The solution has do with viewport, left, top, scroll width and height, window width/height properties that I can incorporate into plugin later on.
Update:
I have come up with this:
http://jsbin.com/upuref/14
However, it is very very hacky and not 100% perfect. I am looking for a better algorithim/solution. I have seen many hover plugins that do this very nicely but since I am not that good at this, I can't do it perfectly well. For example Hover Zoom Chrome Plugin does great job of showing hovered images at appropriate place based on their size.
Like this:
html{overflow-x:hidden;}
html{overflow-y:hidden;}
All you need to do is add these definitions to your CSS and you're done.
Update with Resize: this is the mouseenter code for resizing and repositioning the pictures BOTH horizontally and vertically. Now, no matter where the HOVER image shows up, it's resized and positioned to always show in full AND uncut. As far as the scrollbars are concerned, if you show more thumbnails than can fit on the page, you will have scrollbars even before the HOVER images show up.
FINAL AND WORKING UPDATE: Because you had focused on the scrollbars being hidden, I think you overlooked the fact that if you put more thumbnails than the viewport can contain, the scrollbars would show up anyway and that therefore, since the user can scroll down the document, when you calculate the position of the hover image, not only do you need to account for the resize but you also to account for the scrollTop position too! FINAL JSBIN HERE, all pictures are showing RESIZED and in FULL no matter where the scrollTop is and no matter what the viewport size is.
$this.mouseenter(function () {
dv = $('<div />')
.attr('class', '__shidivbox__')
.css({
'display': 'none',
'z-index': 9999,
'position': 'absolute',
'box-shadow': '0 0 1em #000',
'border-radius': '5px'
})
.html('<img alt="" src="' + isrc + '" />')
.appendTo(document.body);
var DocuWidth = window.innerWidth;
var DocuHeight = window.innerHeight;
var DvImg = dv.find('img');
var TheImage = new Image();
TheImage.src = DvImg.attr("src");
var DivWidth = TheImage.width;
var DivHeight = TheImage.height;
if (DivWidth > DocuWidth) {
var WidthFactor = (DivWidth / DocuWidth) + 0.05;
DivHeight = parseInt((DivHeight / WidthFactor), 10);
DivWidth = parseInt((DivWidth / WidthFactor), 10);
}
var ThumbHeight = $this.height();
var ThumbWidth = $this.width();
var ThumbTop = $this.position().top;
var ThumbLeft = $this.position().left;
var SpaceAboveThumb = ThumbTop - $(document).scrollTop();
var SpaceBelowThumb = DocuHeight - ThumbTop - ThumbHeight + $(document).scrollTop();
var MaxHeight = Math.max(SpaceAboveThumb, SpaceBelowThumb);
if (DivHeight > MaxHeight) {
var HeightFactor = (DivHeight / MaxHeight) + 0.05;
DivHeight = parseInt((DivHeight / HeightFactor), 10);
DivWidth = parseInt((DivWidth / HeightFactor), 10);
}
var HoverImgLeft = 0;
var HoverImgTop = 0;
if (SpaceBelowThumb > SpaceAboveThumb) {
HoverImgTop = ThumbTop + ThumbHeight;
} else {
HoverImgTop = ThumbTop - DivHeight;
}
HoverImgTop = (HoverImgTop < 0) ? 0 : HoverImgTop;
HoverImgLeft = (DocuWidth - DivWidth) / 2;
dv.find('img').css({
'width': DivWidth,
'height': DivHeight,
'border-radius': '5px'
});
dv.css({
'left': HoverImgLeft,
'top': HoverImgTop
});
dv.fadeIn('fast');
});
Well, this looks fun. Anyway, here's my answer. I've been watching this for a few days and though I'd chip in too. The following will make sure that the hovering images do not go out of the viewport and in the event that the width of the image is bigger than the available space for display, the display of the image will be resized (You can comment out the code that does this if you don't want it. Just look for the word "resize" in the code).
var $document = $(document);
$('.simplehover').each(function(){
var $this = $(this);
// make sure that element is really an image
if (! $this.is('img')) return false;
var isrc = $this[0].src, ibox = null;
if (! isrc) return false;
ibox = $('<img />')
.attr('class', 'simpleimagehover__shidivbox__')
.css({
display: 'none',
zIndex : 99,
MozBoxShadow: '0 0 1em #000',
WebkitBoxShadow: '0 0 1em #000',
boxShadow: '0 0 1em #000',
position: 'absolute',
MozBorderRadius : '10px',
WebkitBorderRadius : '10px',
borderRadius : '10px'
})
.attr('src', isrc)
.appendTo(document.body);
$this.bind('mouseenter mousemove', function(e) {
$('.simpleimagehover__shidivbox__').hide();
var left = e.pageX + 5,
top = e.pageY + 5,
ww = window.innerWidth,
wh = window.innerHeight,
w = ibox.width(),
h = ibox.height(),
overflowedW = 0,
overflowedH = 0;
// calucation to show element avoiding scrollbars as much as possible - not a great method though
if ((left + w + $document.scrollLeft()) > ww)
{
overflowedW = ww - (left + w + $document.scrollLeft());
if (overflowedW < 0)
{
left -= Math.abs(overflowedW);
}
}
// 25 is just a constant I picked arbitrarily to compensate pre-existing scrollbar if the page itself is too long
left -= 25;
left = left < $document.scrollLeft() ? $document.scrollLeft() : left;
// if it's still overflowing because of the size, resize it
if (left + w > ww)
{
overflowedW = left + w - ww;
ibox.width(w - overflowedW - 25);
}
if (top + h > wh + $document.scrollTop())
{
overflowedH = top + h - wh - $document.scrollTop();
if (overflowedH > 0)
{
top -= overflowedH;
}
}
top = top < $document.scrollTop() ? $document.scrollTop() : top;
ibox.css({
top: top,
left: left
});
ibox.show();
});
$('.simpleimagehover__shidivbox__').mouseleave(function(){
$('.simpleimagehover__shidivbox__').hide();
});
$document.click(function(e){
$('.simpleimagehover__shidivbox__').hide();
});
$document.mousemove(function(e){
if (e.target.nodeName.toLowerCase() === 'img') {
return false;
}
$('.simpleimagehover__shidivbox__').hide();
});
});
While my solution itself is not perfect, you might find something useful in there that can help you determine the viewport. Also, you might want to think about the performance of the code. Since this is a plugin that you're building, you'll want to make some optimizations before releasing it to public. Basically, just make sure it's not slow.
You can position the image based on the available width: http://jsbin.com/upuref/19/
This demo takes in account the available space for positioning the image (i.e. the window width minus the image width). Also I've improved the event order, with the popup div only starting its fade-in after the image has been loaded.
My answer too (JSBin DEMO)
$('.simplehover').each(function(){
var $this = $(this);
// make sure that element is really an image
if (! $this.is('img')) return false;
var isrc = $this[0].src, dv = null;
if (! isrc) return false;
$this.mouseenter(function(e){
// mouse x position
var initXPos = e.pageX;
var initYPos = e.pageY+20-$(window).scrollTop();
var windowWidth = $(window).width();
var windowHeight = $(window).height();
// load original image
var $img = $('<img/>');
$img.on('load',function(eload) {
var widthImage = this.width;
var heightImage = this.height;
// set inline style for get sizes after (see problems webkit and cache)
$(this).css('width',widthImage);
$(this).css('height',heightImage);
var ratio = widthImage/heightImage;
var finalXPos = initXPos+widthImage>windowWidth? windowWidth-widthImage-5 : initXPos;
var finalYPos = initYPos;
var img = this;
// resize image if is bigger than window
if(finalXPos<0) {
finalXPos = 0;
$img.css('width', windowWidth-10);
$img.css('height',(windowWidth-10)/ratio);
}
// If overflow Y
if(finalYPos+getSize($img,'height')>windowHeight) {
// calculate where is more space (top or bottom?)
var showOnTop = (windowHeight-initYPos-10)<windowHeight/2;
if(showOnTop) {
if(initYPos<getSize($img,'height')) {
$img.height(initYPos-30);
$img.width(getSize($img,'height')*ratio);
}
finalYPos = 0;
finalXPos = initXPos+getSize($img,'width')>windowWidth? windowWidth-getSize($img,'width')-5 : initXPos;
}else {
// show on bottom
if(windowHeight-initYPos<getSize($img,'height')) {
$img.height(windowHeight-initYPos-10);
$img.width(getSize($img,'height')*ratio);
}
finalXPos = initXPos+getSize($img,'width')>windowWidth? windowWidth-getSize($img,'width')-5 : initXPos;
}
}
dv = $('<div />')
.attr('class', '__shidivbox__')
.css({
display: 'none',
zIndex : 9999,
position: 'absolute',
MozBorderRadius : '5px',
WebkitBorderRadius : '5px',
borderRadius : '5px',
top: finalYPos+$(window).scrollTop(),
left: finalXPos
}).append($img)
.appendTo(document.body);
dv.fadeIn('fast');
});
// load the original image (now is the same, but I think is better optimize it)
$img.attr("src",$this.attr("src"));
function getSize($el,widthOrHeight) {
// horrible but working trick :)
return +$el.css(widthOrHeight).replace("px","");
}
})
.mouseleave(function(){
dv.fadeOut('fast');
});
});
this script adapt the image to window size and adjust x position if needed.
Is it possible to know whether or not an HTML element like image is viewable in current viewport or it will be visible on scroll?
If it is viewable completely or partially then how can I get the amount of portions is visible?
I am trying to explain it from the following image:
The two images at the bottom is partially visible within the viewport and these will be completely visible if one scroll down a little bit.
Now I want to get the the aforesaid information.
In the actual scenario I am trying to get the popup-zoom effect on hover of image in my album like google image search. Everything is fine, except if the images are placed in the described manner then the zoomed div also displaying in half.
Normal condition where image is completely in viewport:
And partially in viewport:
I really appreciate your help.
The code:
var albumDetailOnReady = function() {
$('.image').each(function(){
var photo = $(this);
var wrap = $(findParentByClassName(document.getElementById(photo.attr('id')), 'wrap'));
var row = $(findParentByClassName(document.getElementById(wrap.attr('id')), 'albumDetailRow'));
var visibleZone = $(wrap).find('.alDtlColumn');
var pictureBlock = $(visibleZone).find('.pictuteBlock');
var hiddenZone = $(wrap).find('.hiddenZone');
$(photo).load(function(){
if(177 > $(photo).width()){
var imgleft = ($(pictureBlock).width() - $(photo).width())/2 + 'px';
$(photo).css({'left': imgleft});
}
});
$(photo).hover(function(){
var y;
if($(photo).height() > $(photo).width()) {
y = ($(visibleZone).offset().top - 50) + 'px';
} else {
y = ($(visibleZone).offset().top + 50) + 'px';
}
var x;
if($(row).find('.wrap:first').attr('id') === $(wrap).attr('id')) {
x = ($(visibleZone).offset().left - 10) + 'px';
} else if($(row).find('.wrap:last').attr('id') === $(wrap).attr('id')) {
x = ($(visibleZone).offset().left - 50) + 'px';
} else {
x = ($(visibleZone).offset().left - 20) + 'px';
}
$(hiddenZone).css({
'top': y,
'left': x,
'position': 'absolute',
'z-index': '10'
});
$(hiddenZone).fadeIn('fast');
}, function(){
});
$(hiddenZone).hover(function(){},function(){
$(hiddenZone).hide().stop(true, true);
});
});
}
var findParentByClassName = function(element, clazz) {
while (element.parentNode) {
element = element.parentNode;
if (hasClass(element, clazz)) {
return element;
}
}
return null;
}
function hasClass(element, cls) {
var regex = new RegExp('\\b' + cls + '\\b');
return regex.test(element.className);
}
I am unable to show any HTML as I haven't have any, I am working in ADF framework.
But for an explanation:
I have two zone for each image: visible and hidden. Both of them are in a wrap. Now on hover an image I am showing the hidden div. The top and left of the hidden div is measured by the top and left of the visible div with some condition.
jQuery.Viewport
Very helpfull and lightweight jQuery plugin that makes an element as a handy viewport for displaying elements with absolute position. The plugin is hosted on GitHub. You can see it in action right there:
https://github.com/borbit/jquery.viewport
http://jsfiddle.net/Y8MUF/
It can expand the div when i click on it. How do i make it look nicer by adding a "See More" link then hide it when the div exapands and adjust the row height relative to the See More link?
$(document).ready(function(){
var rowsshown = 2;
var rowheight = 1.2; // line height in 'em'
var ht = (rowsshown * rowheight) - .5; // subtracting the .5 prevents the top of the next line from showing
$('.info')
.css({'overflow':'hidden','line-height' : rowheight + 'em','height': ht + 'em' })
.click(function(){
if ( $(this).css('height') == 'auto') {
$(this).css('height', ht + 'em');
} else {
$(this).css('height','auto');
}
});
})
try :
http://jsfiddle.net/Y8MUF/11/
You could look at the jquery slideup and slidedown
http://api.jquery.com/slideUp/
For a better effect