I've this situation: http://jsfiddle.net/neko/CTA4C/7/ (images are just for reference)
HTML:
<div id="container">
<div id="lady">
<img src="http://a2.twimg.com/profile_images/1120515410/ladybird__1__normal.jpg">Click me!</img>
</div>
<div id="containerbg"><img id="BG" src="http://www.bigpicture.in/wp-content/uploads/2011/01/LandscapePhotographsOfBeautifulRoads4_004.jpg"></img></div>
</div>
jQuery:
$("#lady").click(function(){
$(this).addClass("animlady");
});
CSS:
#-webkit-keyframes ladymove{
0% {-webkit-transform: translate(0px, 0px);}
50% {-webkit-transform: translate(100px, 40px);}
100% {-webkit-transform: translate(300px, -20px);}
}
#BG{position:absolute}
#lady{
position: absolute;
float:left;
top:240px;
margin-left: 250px;
z-index:2;
color:white
}
.animlady{
-webkit-animation-name: ladymove;
-webkit-animation-duration: 3s;
-webkit-animation-fill-mode: forwards
}
In short, I've an <img> inside a div as a background fixed in page, inside it (the div) another div with an <img> that moves around triggered by JQ.
So the question is: how can I scale the WHOLE page/div container so the img fits the screen height, maintaining the relation with the moving div, which has a fixed start position value in px?
I've tried something like -webkit-transform: scaleY() but it's just a scaler, right? It's not working like -webkit-transform: scaleY(100%) ?
My final goal is to have a fixed pixel "canvas" that stretches itself by fitting the height of the device and, at the same time, to have the children acting like the father.
p.s.
this is just for tablet webkit based, so I've no problem with using webkit only dedicated code.
Related
I have two containers which are positioned absolutely one below the other like so:
<header>
<div class="vcenter">
...
</div>
</header>
<div id="wrapper">
...
</div>
CSS:
header {
position: absolute;
top: 0;
height: 70%;
}
.vcenter {
position: relative;
margin-top: -50px;
top: 50%;
}
#wrapper {
position: absolute;
width: 100%;
top: 70%;
}
I'm centering .vcenter vertically with relative positioning. This works fine in all major browsers. Only on IOS Safari on the Ipad it's bugging. Check out the site I'm working on. .vcenter is the container of the logo.
I'm inspecting it through Xcodes IOS-Simulator and also checked on an real Ipad. Is this possibly an IOS Safari Bug? Does somebody have a workaround? I want to keep my header dynamically resizing vertically (height: 70%)...
Thanks in advance for your thoughts.
Desktop Screenshot (how it should be):
IOS-Simulator Ipad Screenshot (how it should't be):
I can't really explain it, but using position: absolute seems to fix your problem:
.vcenter {
position: absolute;
margin-top: -50px;
top: 50%;
width: 100%; /* needed to add to fix horizontal positioning */
}
I think it has something to do with using absolute positioning and percentages on the header. If you inspect the height of the html & body, they aren't actually as tall as your content - so maybe computing a 50% positioning for the vcenter is getting messed up. Not sure...
Have you tried using the transform solution? It generally covers your bases for things like iOS rendering issues (of which there are several more than just this scenario).
Write your class like this (it'll break for IE9 and below, but that's what browser shimming is for and you can use your existing code for the shim using Modernizr)
.vcenter {
position: relative;
top: 50%;
transform: translateY(-50%);
}
That should render .vcenter at the vertical center for all modern browsers as well as iOS Safari.
Okay so I have these divs called "latestWorkTitle" which are positioned absolute and are placed on top of the corresponding image to show its title.
However, I can't get this properly to work. The titles don't show at the corresponding image and when I resize my browser window everything shifts and so on.
I tried creating this jsbin http://jsbin.com/uhoxef/1 with a part of my code to illustrate how it should look like and what is going wrong. Even all the titles go on top of each other in the code while they should be on top of the corresponding images... I'm just basically totally lost at this.
I think the HTML was confusing itself. I also made the thumbnail class the relative layer. HTML renders as we read, from left to right. So putting the title before the image causes the image to show on top and cover the text.
HTML:
<div class="thumbnail">
<a href="portfoliodetail.php?id=10">
<img src="http://www.hlnarchitects.com/img/plain_red.png" />
<div class="latestWorkTitle">title1</div>
</a>
</div>
CSS:
.thumbnail {
position: relative;
overflow: hidden;
float: left;}
.portfolioOverview img {
width: auto;
height: auto;}
.latestWorkTitle {
text-align: right;
font-size: 11px;
text-transform: uppercase;
background: yellow;
position: absolute;
padding: 6px;
top: 0;
left: 0;}
For this to work, each thumbnail class needs to be the relative start for each individual layer. So the thumbnail class is set to relative.
Any object set to absolute (.latestWorkTitle) within this layer will start from the top and left position of the relative object.
You'll need to adjust some details to taste but I hope this helps.
ULTIMATE GOAL: Make a formed transparency where images can show through but are shaped by the form itself. The images are rollover buttons and turn from grayscale to color with hover
So the picture below (link) shows what I want to happen in Dreamweaver CS6. I used PS to create this image. I simply took the "person portion" and deleted it so the picture turned out as a white box with a transparent inside. My plan was to simply plant this image into DW and then place the rest of the color images beneath it by placement of the IMG tag.
I figured it would turn out like what you see below but it has not. I simply get a full white page (tested offline, not uploaded to the server). If I add a picture, there is no hint that the PNG with the transparency is even existent.
So now, what would be your suggestions? Would it be easier to just use FW and make slices of the work as seen below? In that case I would just have to match all the pieces of the body up like Tetris when working in DW. It just seems there is a MUCH easier way of doing this and somehow I am making it extremely hard.
Please ask if you need further information. Thank you so much.
http://i1195.photobucket.com/albums/aa400/SteffaneTimm/MeFirstSuccess_zps146c6716.jpg
You could save the outline as a .PNG with alpha transparency as you have. To get the seperate images with the rollover effect you could try something like the below. (not using any canvas trickery). Create an image thats double the height of the strip you want, put the black and white version in the top half, and the colour version of the same image in the bottom half.
If you are having difficulty seeing the white outline you could try setting the page background to black temporarily.
To double check you have linked to your image files correctly you could also try pressing f12 in chrome and looking at the Resources tab in Frames > Images.
.container {
width: 500px; height: 800px;
}
.image-strip {
height: 200px; width: 500px; float: left;
overflow: hidden;
}
.image-strip img:hover {
margin-top: -200px;
}
.woman-outline {
position: relative; top: 0px; left: 0px;
height: 800px; width: 500px;
background: url('woman.png') no-repeat;
z-index: 1000;
}
<div id="container">
<div class="image-strip"><img src="1.jpg" /></div>
<div class="image-strip"><img src="2.jpg" /></div>
<div class="image-strip"><img src="3.jpg" /></div>
<div class="image-strip"><img src="4.jpg" /></div>
<div id="woman-outline"></div>
</div>
I have two absolutely positioned adjacent elements that share the same background color. They appear to be one single element on my desktop and laptop, but there's a plainly visible "border" of sorts - a sliver of translucent color - between the two elements when viewed on the iPad.
If I had to guess I'd say it's due to the different method by which vector objects are drawn in the browser in iOS, but that's just a guess based on some vague information I heard in a talk once.
Here's an entire sample page that can show the issue if you can run it on an iPad:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<style type="text/css">
#container {
position: relative;
width: 200px;
height: 40px;
background-color: transparent;
}
#left {
position: absolute;
top: 0;
left: 0;
width: 50px;
height: 40px;
background-color: red;
}
#right {
position: absolute;
top: 0;
left: 50px;
width: 150px;
height: 40px;
background-color: red;
}
</style>
</head>
<body>
<div id="container">
<div id="left"></div>
<div id="right"></div>
</div>
</body>
</html>
The problem only occurs if Safari is scaling the page.
Safari scales elements individually, often resulting in each element having a 1-pixel-wide translucent edge on one or more sides. Then when the scaled elements are placed side by side, the overlapping translucent edges are still not 100% opaque, so some of the background leaks through.
The problem isn't limited to absolutely-positioned elements; it applies to all adjacent elements (except images, it seems).
For instance, if a table is styled with td { background-color:black } there will sometimes be subpixel slivers of background showing between the table cells. Even two adjacent spans exhibit the problem.
My solution is to restructure the page so that adjacent elements of the same color are wrapped in a container, and the background is applied to the container. This is a lot of work. In your case, a quick fix would be to overlap the divs by 1 pixel.
I do consider this to be an iPad bug. None of my Windows browsers (including Safari) have this problem when zooming a page.
I think I have a reasonable understanding of how css sprites work, but I am baffled by how JQ Mobile is doing it. As a sample I put together a really basic version:
<style>
#id {
display: block-inline;
width: 16px;
height: 16px;
background-image: url("http://code.jquery.com/mobile/1.0b1/images/icons-18-white.png");
background-position: -576px 50%;
background-color: rgba(0,0,0,0.4);
}
</style>
<div style="border: 1 solid black; padding: 5px">
<span id="id"> </span>
</div>
Which is a stripped down of how jqm is doing it. What I don't get is that if you load that png file into an image editor it is completely white, and I can't see any of the images in there. I am also completely confused as to why the y for background position is 50%.
Can anyone help me understand?
The sprite you're talking about has many white icons on a transparent background. If you use lightweight free tool like IrfanView, you'd see it like this:
background-position: -576px 50%; means the background would be placed at the position of -576 from left and 50% from top, which I think is where the home icon is. Although perhaps the 50% bit won't matter in this case as the height is set to 16px but maybe it matters for some other weird mobile browsers.