I have this div with an image background:
<div class="image-cover" style={{ backgroundImage: 'url(' + item.image + ')' }}>
<div className="name">{item.name}</div>
</div>
(the is React code, but essentially the above div has the image applied as a background.)
I want to darken the image, possibly as a gradient so that only the bottom is dark, and fades up to normal. Almost everywhere I searched mentions adding the image as a reference in the CSS. However, in my case, the image url is known only at runtime and is applied in the html.
How can I darken my div here?
You can simply combine an image and a gradient, like this
div {
height: 200px;
width: 500px;
background-image:
linear-gradient(black,
transparent 20%,
transparent 80%,
black),
url(http://lorempixel.com/500/200/nature/1/);
}
<div></div>
Or use a pseudo element, like this
div {
height: 200px;
width: 500px;
background: url(http://lorempixel.com/500/200/nature/1/);
}
div::after {
content: '';
display: block;
height: 200px;
width: 500px;
background: linear-gradient(transparent, black);
}
<div></div>
I was able to achieve that effect by using linear-gradient background on the div's ::before pseudo-element. The idea is to cover the div with its ::before pseudo-element (or with another div, but pseudo-elements don't add any extra elements), and then applying a gradient background to the pseudo-elemetn:
.image-cover {
position: relative;
}
.image-cover::before {
content: "";
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
/* Adjust the color values to achieve desired darkness */
background: linear-gradient(to top, rgba(0, 0, 0, 0.75), rgba(0, 0, 0, 0.25));
}
Here is a JSFiddle to show it in action.
Inset Box-Shadow
Advantage: slim on code, no additional pseudoelement needed
Disadvantage: Box shadow size and offset values can for current w3 standard be ONLY absolute (not percentual), therefore dynamic/various size of the shadowed element cannot be solved without JavaScript calculating elements dimensions.
There are better answers, so i am just going to throw this as an additional option (worse).
div {
display: inline-block;
background:url(http://unsplash.it/200/200);
width:200px;
height:200px;
}
.darkened{
box-shadow: inset 0 -200px 200px -100px rgba(0,0,0,.9);
}
<div></div>
<div class="darkened"></div>
Elements can have multiple backgrounds, and you want to set it from code?
let imageURL = "https://i.stack.imgur.com/QqkeF.png"; // an example image
let cssURL = "url( " + imageURL + ")"; // convert to CSS url declaration
let gradient = "linear-gradient(to top, rgba(0, 0, 0, 1), rgba(255, 0, 0, 0))";
divElement.style.backgroundImage = gradient + "," + cssURL;
<div id="divElement" style="height:128px; width: 256px;">
#divElement
</div>
,
Essentially convert the image URL known at run time into a CSS url declaration, create a CSS gradient pattern of your choosing and add them as a comma separated list to the backgroundImage property of the element's style attribute.
I used the global variable divElement for testing - use document.getElementById as you wish.
Edit: looking at your code, it should be fairly easy to put the background image list in the template: the stand-alone code above was written to check it worked :-)
Related
I have two img elements and I want the first image.png to go behind the transparent image.png. I have tried a lot of different things (z-index, transparent background color, rgba background color, positioning absolute and relative, nesting one in a div, making them both divs). Right now i've been trying to use a transparent .png image. The image .png is actually behind it, but it still shows through it. Please help.
html:
<body>
<main class="site-wrapper">
<div class="carnival"></div>
<div id="images">
<img id="divbox" src="images/divbox.png">
<img id="clown1" src="images/clown1.png">
</div>
</main>
</body>
js: (i did the styles in js b/c I was interested in learning how to do it that way):
//styles
//divbox:
document.getElementById('divbox').style.display = "inline-block";
document.getElementById('divbox').style.transform = "skew(-2deg)";
document.getElementById('divbox').style.marginTop = "21%";
document.getElementById('divbox').style.marginLeft = "47.6%";
document.getElementById('divbox').style.height = "200px";
document.getElementById('divbox').style.width = "200px";
document.getElementById('divbox').style.border = "1px solid orange";
document.getElementById('divbox').style.position = "absolute";
document.getElementById('divbox').style.zIndex = "2";
//clown1:
document.getElementById('clown1').style.display = "inline-block";
document.getElementById('clown1').style.transform = "rotate(90deg)";
document.getElementById('clown1').style.marginTop = "21%";
document.getElementById('clown1').style.marginLeft = "53%";
document.getElementById('clown1').style.border = "1px solid green";
document.getElementById('clown1').style.position = "relative";
document.getElementById('clown1').style.zIndex = "1";
Thanks for any help, please let me know if I can answer questions.
UPDATE:
Sorry for not being clearer. I have now achieved getting the image behind the other image, but since the image ontop is transparent, the image behind is showing. How do I stop this?
Here is an example of what is happening:
http://oi61.tinypic.com/2mw9egx.jpg
Notice the orange border is ontop so it is definitely ontop.
UPDATE 2:
This should make it really clear what I want. Again sorry for the confusion:
http://oi59.tinypic.com/eamb0n.jpg
I would do something like the following jsFiddle: http://jsfiddle.net/7gdx48fu/. Might need to reload a couple times to see a good example of the overlay working.
Create a wrapper DIV for your two images. Set that wrapper DIV's to position: relative so we can use absolute positioning on one of the images it contains. By doing this we prevent the absolute positioned image from potentially aligning itself elsewhere in the page, like the upper left corner of the browser window.
Then, set the position of our overlay image, the transparent PNG, to position: absolute along with top: 0 and left: 0 to align it with the first images upper left corner.
You can do this without using z-index if you watch the order you include your images. Place the image you want behind the transparent PNG in the markup first followed by the transparent PNG.
<div class="img-container">
<img src="http://lorempixel.com/200/200/city/">
<img class="overlay" src="http://lorempixel.com/200/200/city">
</div>
.img-container {
position: relative;
}
.overlay {
position: absolute;
top: 0;
left: 0;
opacity: 0.25; /* using this to replicate the transparent PNG */
}
EDIT
The OP's requirements have changed to include how to prevent an image behind a transparent image from showing through the transparent image.
Here is an updated jsFiddle: http://jsfiddle.net/7gdx48fu/2/.
This approach I wrapped the transparent PNG in a wrapper DIV and set it's background color. I used white in my example but you may use any color.
<div class="img-container">
<img src="http://lorempixel.com/200/200/city/">
<div class="overlay">
<img src="http://lorempixel.com/200/200/city">
</div>
</div>
.img-container {
position: relative;
}
.overlay {
position: absolute;
top: 0;
left: 0;
background-color: white;
top: 15px; /* shifting overlay for illustrative purposes - not use case code */
left: 15px; /* shifting overlay for illustrative purposes - not use case code */
}
.overlay img {
opacity: 0.25; /* using this to replicate the transparent PNG */
}
Not perfect but I'm unsure of how else to proceed.
EDIT 2
It seems the OP wants to do a form of masking. You can do this with overflow: hidden.
I have updated the jsFiddle: http://jsfiddle.net/7gdx48fu/4/
In this updated answer I have kept the wrapper DIV and set it with a fixed width and height. Then applied overflow: hidden. What we are doing here is creating an invisible window that will only show content when it is within the dimensions of the window.
To have the image appear as if it is coming out of the base layer image simply adjust the position of the image inside the wrapper DIV. For the jsFiddle simply play with the value of top in .mask img.
This will need a little tweaking for the proper placement and size of the .mask DIV to fit your needs but hopefully points you in the right direction.
<div class="img-container">
<img src="http://lorempixel.com/200/200/city/">
<div class="mask">
<img src="http://lorempixel.com/200/50/city">
</div>
</div>
.img-container {
position: relative;
}
.mask {
position: absolute;
top: 25px;
left: 25px;
height: 100px;
width: 100px;
overflow: hidden;
border: 1px solid red; /* for illustrative purposes */
}
.mask img {
position: relative;
top: 25px;
}
Have you tried the css opacity property ?
#clown1{ opacity:0.3;}
make both images' position absolute instead of relative
for the above to work, some common ancestor (i.e. #images) must have a non-default position too (e.g. relative)
forget zIndex - all else being equal, the latter element will be "topmost"
put all the above in a CSS style sheet instead of in JS code!
Forgetting the other transformations and margins, etc, the core CSS that you need is:
#images {
position: relative;
}
#divbox, #clown1 {
position: absolute;
}
Put them both in a parent container. Make the parent have position: relative and put both images having position:absolute. That way they will stack.(Something like that that I didn't check The order of img's could be wrong - play around a bit.
CSS:
.parent > img.transparent {
position: absolute;
}
.parent > img {
position: absolute; opacity: 0.5
}
HTML:
<div class="parent" style="position:relative">
<img src="other.png" class="transparent"/>
<img src="transparent.gif"/>
</div>
Some more explanation: When you make a parent/ancestor element's position relative it means that its contents that are absolute will be relative to the parent and not to the whole window
I made a div over another div to create a border.
Here is an example:
Now I have a problem: if I put the mouse over the image I get the focus on the div with the border only (for ex., if I want right click and save img) but the div is empty all the time (is used only for the border) how i can ignore the center part of the div?
I used a div because I place the border over the image/other stuff and I can't have the same result using the original border (is placed outside the image and I get a white space from the border and the image).
In this jsfiddle the dimension aren't right. (I place the border with js code)
img = $('<div style="position:absolute; width: ' + ($(this) .outerWidth(true) +
leagueBorders[templeague].width) + 'px; height: ' + ($(this) .outerHeight(true) +
leagueBorders[templeague].height) + 'px; max-width: none; top: '+
($(this).position().top + leagueBorders[templeague].top) +'px; left: '+
($(this).position().left + leagueBorders[templeague].left) +'px;"
class="'+leagueBorders[templeague].classe+'"></div>');`
But you can easily see the problem. If you right click on the image you get the right click menu of a empty space instead of the image options.
if I a text with a scroll bar (instead of the image) I can't use the scroll bar.
A div isn't enmpty just because you don't see anything in it. A div can have a transparent content, it doesn't mean that ti's empty. It's like a transparent layer. That's why it takes the focus. You should use css border properties to fit your borders to the image. Or, you should wrap your image in a container (a div) and apply specific css rules to this container, so that your borders will fit.
You need to fix your HTML tags and use CSS to do all the graphical work.
Make sure img tag is inside div and then use the following CSS.
SEE PICTURE HERE
.rank-Platino {
overflow: hidden;
border: 15px solid transparent;
border-image-slice: 95 80 95 80;
border-image-width: 50px 50px 50px 50px;
border-image-outset: 0px 0px 0px 0px;
border-image-repeat: stretch stretch;
border-image-source: url("https://dl.dropboxusercontent.com/u/30396291/LOL/border/plat-border.png");
margin: 6px;
}
<a class="avatar">
<div style="position:absolute; width: 90px; max-width: none; top: 0px; left: 0px" class="rank-Platino rank-border">
<img height=163 width=90 class="user_summoner_icon PLATINUM rank-border"
src="http://www.mobafire.com/images/champion/skins/portrait/rammus-full-metal.jpg"></div>
</a>
Use CSS when working with borders, like this:
border-size:2px;
border-style:solid;
border-color:black;
I want to use HTML to create an "opening" effect of one on top of another one.
After some research i figured out a way (see JSFiddle).
I now have the problem that the background image moves a little bit when the circle is resizing.
Can anyone help me figure out how to get the background image to stand still.
The image in the circle needs to keep same zoom level when opening.
The circle needs to be centered and the bottom half needs to be out of the window.
Circle css is this:
.circle {
width: 0px;
height: 0px;
z-index: 10;
position: absolute;
border-radius: 50%;
overflow: hidden;
margin: 0 auto;
left: 50%;
-moz-transform: translate(-50%, 50%);
-webkit-transform: translate(-50%, 50%);
bottom: 0;
-moz-transition: all 1.5s;
-webkit-transition: all 1.5s;
}
JSFiddle: http://jsfiddle.net/GmvUQ/2/
Update,
Let me explain a little more. i notice that my question is not clear enough.
I have a few screenshot for the effect i want to create:
1st frame:
2nd frame
The entire effect is already working but when the transition is in progress (The circle with the image is getting bigger or smaller) the image inside the circle moves a little bit.
This is probably because of the calculations that need to be done by Javascript / CSS positioning.
I would like some help how to let this image stand entirely still during resize transition.
Thanks!
DEMO: http://jsfiddle.net/GmvUQ/5/
Updated HTML
<div>
<div class="buttons">
<button onclick="changeboleto(0)">Click here</button>
<button onclick="changeboleto(500)">Click here</button>
<button onclick="changeboleto(1000)">Click here</button>
</div>
<div class="circle girl">
</div>
<div class="circle lamborghini">
</div>
</div>
Note that I've removed the nested </div> elements within each .circle. Instead I've added an extra class for each, which sets the background-image (and some positioning for them, if necessary).
Updated CSS
.circle {
width: 250px;
height: 250px;
z-index: 10;
position: absolute;
border-radius: 50%;
overflow: hidden;
margin: 0 auto;
background-repeat: no-repeat;
background-size: cover;
background-origin: content-box;
background-position: center center;
}
.lamborghini {
background-image: url(http://www.hdwallpapers.in/walls/2013_wheelsandmore_lamborghini_aventador-wide.jpg);
}
.girl {
background-image: url(http://www.hdwallpapers.in/walls/colorful_background_girl-normal5.4.jpg);
top: 50%;
}
.buttons {
position: relative;
z-index: 5;
}
I've moved most of the CSS in to the .circle class as it is common to both image sets. Pay special attention to the values for the background-* attributes.
Updated JQuery
function changeboleto(pix) {
circleHeight = pix;
circleWidth = pix;
$('.circle').animate({
'width' : circleWidth,
'height': circleHeight
}, 1500, 'linear');
//css('width', circleWidth).css('height', circleHeight);
changeCircleBackgroundToWindow();
}
function changeCircleBackgroundToWindow() {
windowWidth = $(window).width();
windowHeight = $(window).height();
$(".circle > div").animate({
'width' : windowWidth,
'height': windowHeight
}, 1500, 'linear');
$(".circle > div").animate({
'width' : windowWidth,
'height': windowHeight
}, 1500, 'linear');
//$(".circle-background").css("width", windowWidth).css("height", windowHeight);
//$(".circle-background2").css("width", windowWidth).css("height", windowHeight);
}
Rather than mix JQuery and CSS transitions I've lumped all the animation together in the JQuery.
I've used the animate() function and specified the easing method. The default easing is swing but I've used linear as this progresses the animation at a constant pace.
Edit
The solution above includes CSS that allows the image to scale with the animation. However you are requesting that the image stays at the same "zoom level" throughout.
To achieve this simply remove a line from the CSS, namely this one:
.circle {
...
background-size: cover;
...
}
I know this is 5 years too late, but I found this thread via a search engine and thought I'd provide my own thoughts.
This effect can also be achieved with clip-path, which is a bit more forgiving than jquery's animate (which can still result in image shakiness if you're animating certain/enough properties).
clip-path has the additional benefit of not needing javascript at all if you're doing, say, hovers rather than button clicks. It also results in a simpler HTML file.
I've made an updated version of the original question's jsfiddle, http://jsfiddle.net/GmvUQ/13/ which demonstrates doing this with clip-path. It's still using jquery to handle the button clicks, but the "magic" all happens via CSS transitions, rather than javascript animations.
JQuery:
function changeboleto(pix) {
...
$('.circle-background').css('clip-path', 'circle(' + pix/2 + 'px at 50% 100%)');
}
CSS (including original CSS from original fiddle):
.circle-background {
position: absolute;
z-index: 10;
clip-path: circle(0% at 50% 100%);
background:url(http://www.hdwallpapers.in/walls/colorful_background_girl-normal5.4.jpg);
background-size: cover;
-webkit-transition: all 1.5s;
-moz-transition: all 1.5s;
bottom: 0%;
left: 50%;
-moz-transform: translateX(-50%);
-webkit-transform: translateX(-50%);
}
What this does is simply cause the CSS to transition on the clip-path property, animating the circle expansion. Because the image itself never moves, just the boundaries between which it displays, it never shakes.
Full screen demo
JSFiddle: http://jsfiddle.net/7bP7Z/4/ (Click around to see things grow)
Okay, so now that the question has more clarification I have revisited the drawing board and have come up with a better solution.
HTML
<div class="circle">
<div class="circle-overlay"></div>
<img src="http://www.hdwallpapers.in/walls/2013_wheelsandmore_lamborghini_aventador-wide.jpg" />
</div>
<div class="circle">
<div class="circle-overlay"></div>
<img src="http://www.hdwallpapers.in/walls/colorful_background_girl-normal5.4.jpg" />
</div>
Note the changes to the structure:
A containing element
An "overlay" element
An </img>
CSS
.circle {
position: relative;
overflow: hidden;
}
.circle-overlay {
position: absolute;
left: 50%;
margin-left: -150px;
bottom: -150px;
border-radius: 50%;
width: 300px;
height: 300px;
box-shadow: 0px 0px 0px 3000px white;
}
Nice and simple CSS!
The majority of the code is used to position our .circle-overlay class. This class provides a transparent circle (using border-radius) and utilises one of my favourite new CSS features - box-shadow - to apply a solid, white "outline" of an arbitrarily large value that covers the image below it. Have a play with the colour and size (adjust the 300px value) of the box-shadow to see how this works.
JQuery
$('.circle').click(function() {
var c = $(this).children('.circle-overlay');
var w = c.width() + 100;
c.animate({
'width' : w,
'height': w,
'bottom': (w*-0.5),
'margin-left': (w*-0.5)
}, 500, 'linear');
});
Once again, keeping things nice and simple!
The above JQuery performs a very simple task. It increases the size of the circle-overlay whilst maintaining its bottom, centre positioning on every click.
This should be a very smooth animation and the image should not "judder" or "shake" as the image is not being manipulated.
I have a PNG image of a character, and I want something like that:
http://www.swfcabin.com/open/1364482220.
If someone clicks on a part of the character's body, it'll be "selected".
The question is - how can I do that. I don't want to use more images (because I have multiple characters), I want to use CSS only.
I tried this: http://jsfiddle.net/eRVpL/, but the green background appear above the white background, and I want it to be only above the character.
The code:
<div class="character">
<img src="http://img194.imageshack.us/img194/3854/goldgladiator.png" />
<span></span>
</div>
<style>
.character { width: 210px;display: inline-block; vertical-align: middle; position: relative; }
.character > span {
display: block;
width: 200px;
height: 30%;
background: rgb(160, 255, 97);
opacity: .3;
position: absolute;
top: 0;
}
img {
max-width: 200px;
}
</style>
You can make this work with CSS masks, although they are currently only supported in WebKit browsers: http://caniuse.com/#feat=css-masks
http://jsfiddle.net/eRVpL/3/
HTML:
<div class="character">
<img src="http://img194.imageshack.us/img194/3854/goldgladiator.png">
<div class="green-mask"></div>
</div>
CSS:
.green-mask {
height: 200px;
width: 508px;
background: rgb(160, 255, 97);
opacity: .3;
position: absolute;
top: 0;
-webkit-mask-image: url(http://img194.imageshack.us/img194/3854/goldgladiator.png);
}
If you want to offset the elements like in the GIF you linked, put the colored background on children of the masked div:
http://jsfiddle.net/eRVpL/11/
HTML:
<div class="character">
<img src="http://img194.imageshack.us/img194/3854/goldgladiator.png">
<div class="green-mask">
<div class="filler"></div>
</div>
</div>
CSS:
.filler {
background-color: rgba(160, 255, 97, 0.3);
height: 200px;
margin-top: 200px;
width: 100%;
}
.green-mask {
position: absolute;
width: 508px;
top: 0;
-webkit-mask-image: url(http://img194.imageshack.us/img194/3854/goldgladiator.png);
}
And this one's just for fun: http://jsfiddle.net/eRVpL/23/ Try clicking the character. It uses checkboxes and labels with no JavaScript.
Currently there is no CSS-only means of accomplishing this. There is a specification for compositing and blending with CSS that's in the works, but it currently isn't being supported enough to be used in a product just yet. You can read-up on the spec here: http://www.w3.org/TR/compositing/
With this specification, we could set the blend-mode of your element to "screen", "overlay", or "lighten" which would make your character be green but the background would remain white. Unfortunately, this isn't possible just yet.
The best way would be, as jcubic said in one of your comments, "You need to use a mask, image that will be exactly the same but the character transparent".
Good luck!
Try using z-index for getting what you want. You'll be able to make the object appear to be hidden on a certain page until you bring it up with a mouse click or hover. You can also make a green image that's basically a silhouette and cut it up into three different portions, give them a little bit of exact positioning (each with their own division) and have a little z-index, then you've got yourself that. You might also want to cut up the actual character into three parts to make it easier.
I am trying to make 3D picture tables with three.js, and all is working fine, however, I would be able to have two pictures back-to-back with only 1 div :
in my element, I have a background, and I would have another picture on the other side.
Is it possible? With the property backface-visibility:hidden; I can make the background disappear on the wrong side, but how do define a picture as "background of the backface" ?
.element {
width: 140px;
height: 180px;
box-shadow: 0px 0px 20px rgba(0,255,255,0.5);
border: 1px solid rgba(127,255,255,0.25);
cursor: default;
backface-visibility:hidden;
-webkit-backface-visibility:hidden;
-moz-backface-visibility:hidden;
}
...
var element = document.createElement( 'div' );
element.className = 'element';
element.style.backgroundImage="url('img/img-"+(i+1)+".jpg')";
element.style.backgroundRepeat = "no-repeat";
element.style.backgroundPosition = "center";
You need a second element for the back face. See http://css3.bradshawenterprises.com/flip/ for an example on how to implement this (and consider the example CSS3 animation a bonus).
You can't, per se; backface-visibility: hidden; is so that you can create another element with the supplementary rotation behind it that contains your backface.