I'm trying to use the CSS mix-blend-mode to make this text dodge over the background image but the css only seems to work on the div's background. I've seen it work on text before so why isn't it working here?
#draggable { mix-blend-mode: color-dodge; }
Demo: http://codepen.io/anon/pen/YyJGzo
The settings that you are using (text color and blend mode) are not noticeable
From the w3c page
10.1.8. color-burn blend mode
Darkens the backdrop color to reflect the source color. Painting with
white produces no change.
if(Cb == 1)
B(Cb, Cs) = 1
else if(Cs == 0)
B(Cb, Cs) = 0
else
B(Cb, Cs) = 1 - min(1, (1 - Cb) / Cs)
Where Cb == 1 means white in the backdrop (the text in your case), and B(Cb, Cs) = 1 means that the resulting color stays white. (Without any contribution from the background)
Try
#draggable{
color: green;
mix-blend-mode: screen;
}
or
#draggable{
color: grey;
}
demo codepen with grey text
for instance
Related
I have some content on a page that serves as a global background.
I put a sprite (div with background-image: url(...), changing frames by modifying background-position) on top of that using position: absolute. The sprite is a PNG with alpha-channel.
Now I'm trying to add some tint to that image (greenish or blueish or other).
I've studied the similar questions and apparently the only possible solutions are:
Create a div on top of the sprite with the desired color as its background-color, desired tint strength as opacity and the original sprite image as mask-image (and setting the mask-type: alpha). While it should work on paper, it doesn't in practice - this new div is just invisible :(
Use mix-blend-mode for the overlaying colored div and specify something like multiply or overlay. It produces perfect results as long as the global background is black. If it's something else - it gets included in the calculations and the overlay div modifies it as well, producing a tinted rectangle instead of tinted sprite...
Use SVG filter as described in an answer here: https://stackoverflow.com/a/30949302/306470 .
I didn't try this one yet, but it feels unnecessary complicated for this task. I'm concerned about the performance here too, will it slow down things a lot if there will be multiple tinted sprites on the screen at the same time? If anyone had experience with it - please comment here :)
Prepare a tinted version of the sprite using an invisible canvas. Sounds even more complicated, has a disadvantage of having to spend time to prepare the tinted version of the sprite, but should work as fast as the original sprite once it's prepared? Implementation should be pretty complicated though. Pure CSS solution would be much better...
Am I missing something? Are there any other options? Or should I go with #3 or #4?
Here is a working example of the outlined comment I left, hope it helps. I use a created div element to overlay on top of the image. Get the image elements position using boundingClientRect and this.width/this.height inside a for loop looping over the image elements. Set the overlay elements position to that of the image element being looped over and randomize a color using function with rgb setting alpha to 0.5.
let fgrp = document.getElementById("group");
let images = document.querySelectorAll(".imgs");
//function to randomize the RGB overlay color
function random() {
var o = Math.round,
r = Math.random,
s = 255;
return o(r() * s);
}
//function to randomize a margin for each image to show the overlay will snap to the image
function randomWidth() {
var n = Math.round,
ran = Math.random,
max = 400;
return n(ran() * max);
}
// loop through the img elements and create an overlay div element for each img element
for (let i = 0; i < images.length; i++) {
// load the images and get their wisth and height
images[i].onload = function() {
let width = this.width;
let height = this.height;
this.style.marginLeft = randomWidth() + "px";
// create the overlay element
let overlay = document.createElement("DIV");
// append the overlay element
fgrp.append(overlay);
// get the image elements top, left positions using `getBoundingClientRect()`
let rect = this.getBoundingClientRect();
// set the css for the overlay using the images height, width, left and top positions
// set position to absolute incase scrolling page, zindex to 2
overlay.style.cssText = "width: " + this.offsetWidth + "px; height: " + this.offsetHeight + "px; background-color: rgba(" + random() + ", " + random() + ", " + random() + ", 0.5); left: " + rect.left + "px; top: " + rect.top + "px; position: absolute; display: block; z-index: 2; cursor pointer;";
}
}
img {
margin: 50px 0;
display: block;
}
<div id="group">
<image src="https://artbreeder.b-cdn.net/imgs/275c7c05efca3a40e3178208.jpeg?width=256" class="imgs"></image>
<image src="https://artbreeder.b-cdn.net/imgs/275c7c05efca3a40e3178208.jpeg?width=256" class="imgs"></image>
<image src="https://artbreeder.b-cdn.net/imgs/275c7c05efca3a40e3178208.jpeg?width=256" class="imgs"></image>
</div>
Following the guide below, it is possible to at a colorful tint over a div/image using only CSS, like so:
<html>
<head>
<style>
.hero-image {
position: relative;
width: 100%;
}
.hero-image:after {
position: absolute;
height: 100%;
width: 100%;
background-color: rgba(0, 0, 0, .5);
top: 0;
left: 0;
display: block;
content: "";
}
</style>
</head>
<body>
<div class="hero-image">
<img src="https://cdn.jpegmini.com/user/images/slider_puffin_before_mobile.jpg" alt="after tint" />
</div>
<div>
<img src="https://cdn.jpegmini.com/user/images/slider_puffin_before_mobile.jpg" alt="before tint" />
</div>
</body>
</html>
Since you are trying to place it on top of an absolute position image, as the guide says, add a z-index of 1 (for example) to the :after chunk.
Edit: It might need some tweaking on the width's percentage!
Source: https://ideabasekent.com/wiki/adding-image-overlay-tint-using-css
I have create one div, inside that there are some css applied (through the css file). Now I want to print that particular div from the whole page. The problem which I'm facing that all the css classes are applied in print dialog but background color is not applied.
Here is my code block of print button which opens a default print dialog:
$("#btnPrint").click(function () {
var contents = $("#Call").html();
var frame1 = $('<iframe />');
frame1[0].name = "frame1";
frame1.css({ "position": "absolute", "top": "-1000000px" });
$("body").append(frame1);
var frameDoc = frame1[0].contentWindow ? frame1[0].contentWindow : frame1[0].contentDocument.document ? frame1[0].contentDocument.document : frame1[0].contentDocument;
frameDoc.document.open();
//Create a new HTML document.
frameDoc.document.write('<html><head><title>Call</title>');
frameDoc.document.write('</head><body>');
//Append the external CSS file.
frameDoc.document.write('<link href="../css/abc.css" rel="stylesheet" type="text/css">');
//Append the DIV contents.
frameDoc.document.write(contents);
frameDoc.document.write('</body></html>');
frameDoc.document.close();
setTimeout(function () {
window.frames["frame1"].focus();
window.frames["frame1"].print();
frame1.remove();
}, 500);});
Here is the my div on page:
Here is the print dialog which shows the preview of the div:
Please help me to apply background print dialog.
Thanks
Option 1:-
If you dont mind about browser compatibility then use
-webkit-print-color-adjust: exact;
this will work only in chrome
Option 2:-
To make it printable(with image and colors) in all browsers you have to make the whole printing elements without background image and background colors.
Instead of them use image tag and border colors with #media print (read more)
Manual Options:-
you have to manually check the print background (Chrome : "background graphics", Firefox : "Print Background") while printing. this will display both background colors and background images. we can not control printing through code if you concern about browser compatibility.
Chrome:-
Firefox:-
[
for chrome and safari you can force printing background color by -webkit-print-color-adjust property rule, for example
body {
-webkit-print-color-adjust: exact;
}
read more about it here
Check my website out - http://icestartup.com/testsites/site2/
The background is supposed to be a layer of 2 images and a background color. But when I did that it is showing a "invalid property error" in Chrome inspector.
This is the code I used:
body {
background: url(http://icestartup.com/testsites/site2/wp-content/uploads/2016/04/gradient.png) no-repeat scroll center top transparent, url(http://icestartup.com/testsites/site2/wp-content/uploads/2016/04/background-pattern.png) repeat scroll transparent, #90B601;
}
To see the exact error I have uploaded a screenshot - The error can be seen in the Chrome inspector in this image
What can I do?
The main problem in your code is with the color attribute. This is the correct syntax for the css3 background tag for multiple images:
background: [ <bg-layer> , ]* <final-bg-layer>
<bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2}
<final-bg-layer> = <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box>{1,2} || <background-color>
Please note that background-color is only permitted in the final background layer (1).
You should whether use something like this:
background: url(http://icestartup.com/testsites/site2/wp-content/uploads/2016/04/gradient.png) no-repeat scroll center top, url(http://icestartup.com/testsites/site2/wp-content/uploads/2016/04/background-pattern.png) repeat scroll transparent
Or use separate background-image tags as you find in the examples in the link attached above.
You have to remove transparent from your code as it is creating issue..
Please use below Code:
body{
background:url(http://www.icestartup.com/testsites/site2/wp-content/uploads/2016/04/gradient.png) no-repeat top center, url(http://www.icestartup.com/testsites/site2/wp-content/uploads/2016/04/background-pattern.png) repeat, #90B601;
}
I'm not sure this is possible, but i was wondering if it is possible to set a background color for text only, & not the span/div/P tags that contain the text.
EG
This text here...
each character of "this" will be a black background with white text, the 'space' will have the blue background the word "text" will be a black background with white text etc....
Something like what deaf people see on some TV shows - captions...
But I don't want to contain each / every word with a div or span - as that will make the total HTML coding huge...
From what i have gathered / googled, I can set a background for an entire 'container' but not just for "text" in the container.
example: How do I set background color of text only in CSS?
The above sets the whole h1 tag as a green background.
PS - i'm only using 'green' as an example - but i've got other colours in mind, or even pictures as the background. but i want the text content to be visible..
PS, if the above can be done, is it also possible to 'opaque' the text-background ? so the actual / main background is partially visible, but keep the text "solid".
Ive used opaque, but it makes the foreground text opaque (not kept as solid).
This is the solution I found using JavaScript. It is definitely not only CSS, but it's as far as I could get it with minimal code:
Note: check the updated JSFiddles below! http://jsfiddle.net/fq4ez69t/1/
It finds all spaces in your "p" tags (i.e. change this to whatever you need) and substitutes them with a span with class .space so that you can style it in your CSS.
Here's the JS:
var str = document.getElementsByTagName("p")[0].innerHTML;
var newstring = str.replace(/ /g, '<span class="space"> </span>');
document.getElementsByTagName("p")[0].innerHTML = newstring;
Update #1
Just thought of this. Maybe change the getElementsByTagName("p")[0].innerHTML; to something like document.getElementsByClassName('shaded')[i]; and use this class on whatever text you want to look like that. This is done using a for loop like so:
http://jsfiddle.net/fq4ez69t/2/
Just add the class shaded to the text element you want to look like the image above and voila!
var shadedtextblocks = document.getElementsByClassName("shaded");
for(var i = 0; i < shadedtextblocks.length; i++)
{
var str = shadedtextblocks[i].innerHTML;
var newstring = str.replace(/ /g, '<span class="space"> </span>');
shadedtextblocks[i].innerHTML = newstring;
}
Update #2 - Works with background images now.
http://jsfiddle.net/37s7ex2j/
Here's an updated version that works for p and h1 tags and uses jQuery. It won't print backgrounds on top of your background image. It looks much better, but the script is a bit slower. Here's the result:
$('.shadedtext').each(function(){
//FOR P ELEMENTS
var text = $.trim($('p').text()),
word = text.split(' '),
str = "";
$.each( word, function( key, value ) {
if(key != 0) { str += " "; }
str += "<span class='shade'>" + value + "</span>";
});
$('p').html(str);
});
Choosing text in a container
In short: No you can not set the background of only the text in a div, or spesialy choose each color for each word.
What you can do is set the text of each container ofc:
<div class="class"></div>
.class {
//background, can also use rgba(0,0,0,0.5) <- semi transparent black.
background-color: white;
}
But I don't want to contain each / every word with a div or span - as that will make the total HTML coding huge...
Keeping your text inside inline-block elements will keep the selection to some what text only.
Example:
p {
background-color: rgba(5, 5, 5, 0.5);
color: white;
}
p.inline {
display: inline-block;
}
Inline
<p>Lorem ipsum dolar si amet</p>
Inline-block
<br>
<p class="inline">Lorem ipsum dolar si amet</p>
If you want something like subtitles on TV, you can add a text-shadow on your text:
.myTextClassSelector{
text-shadow: green 1px 1px, green -1px 1px, green -1px -1px, green 1px -1px;
}
<div>
<p class="myTextClassSelector">This text here</p>
And this other text here.
</div>
I have a div that is colored dynamically and inside that div there is a text. I would like the color of the text will be white or black depending of the darkness of the color of the div.
So if for example the color of the div is dark brown I would like the color of the text be white. If the color of the div is yellow, I would like the color of the text be black.
How to do that with HTML/CSS/PHP?
Javier
How are you setting the colour of the Div? An extension of what Doug said...
var myDiv = document.getElementById("yourDynamicDiv");
myDiv.style.color = "black";
if you set the colour manually add that at the same time.
Rick
This function will take any hexcolor and return either white or black depending on what has more contrast.
function TextContrast($hexcolor){
$hexcolor = str_replace("#","","$hexcolor");
if(!$hexcolor){
$hexcolor = "FFFFFF";
}
$r = hexdec(substr($hexcolor,0,2));
$g = hexdec(substr($hexcolor,2,2));
$b = hexdec(substr($hexcolor,4,2));
$yiq = (($r*299)+($g*587)+($b*114))/1000;
if($yiq >= 128){
$text_color = "#000000";
}
else{
$text_color = "#FFFFFF";
}
} // end text contrast function
For your style sheet, you can change the .css extension to .php and add
.custom_div {background: #FF00FF;}
<?php TextContrast("FF00FF"); ?>
.custom_div {color: <?php echo $text_color; ?>
Ok so, will the colors be pre-determined, or the user will generate it? If you're going with the predetermined colors, you can set classes for the parent and the child can now where it is via css and adjust accordingly. Below is an example on how.
HTML
<div class="parent">
<div class="child"> Enter Content Here</div>
</div>
CSS
.black-bg {
background:#000000;
}
.black-bg div {
color:#FFFFFF;
}
.white-bg {
background:#FFFFFF;
}
.white-bg div {
color:#000000;
}
Everytime you change the class on the parent, it will force the browser to re-render the area, hence enabling dynamic styling.
I don't know php, but you can do it in JS like this:
JS (jquery)
if ( x === condition-1 ) {
$(".parent").addClass(".black-bg");
} else if ( x === condition-2 ) {
$(".parent").addClass(".white-bg");
}