Adobe Granite HTML Library Manager - aem

In Adobe Granite HTML library Manager, How "max data uri size" works?
I tried an image with a lot of data size in the configuration.But there is no
change.
Can someone tell me how this configuration works in AEM?

The minification of css-files can auto-inline small resources (e.g. icons). The config-parameter htmllibmanager.maxDataUriSize steers maximum size for resources to be auto-inlined.
Here is an example css:
#tiny-icon {
height: 32px;
width: 32px;
background-image: url("tiny-icon.gif");
}
My sample-icon has a size of 360 bytes. With maxDataUriSize <= 360, the minified css file will look:
#tiny-icon{height:32px;width:32px;background-image:url("test-alex/tiny-icon.gif")}
With maxDataUriSize > 360, the icon will be auto-inlined as data-url:
#tiny-icon{height:32px;width:32px;background-image:url("data:image/gif;base64,R0lGODlhIAAgAIQQAEeczSqmzligoGmarl6khnCdy3CpaBjo9Gbuk4HxcbLf1Gb35tnhhtna19T2NO/w7////////////////////////////////////////////////////////////////yH5BAEKABAALAAAAAAgACAAAAXlYCGOZCkOhBGsgOm+I6qycF3Ka9DaPErkO17NBxSSHshHY8lwOA6LhWJJpdaS1OYzOq1Wr0qmEyr1Vh/XrCNB7pobyJqazX0vk/JGk162J9EwemttdnB/NXuEfn+ALgKDdYuMLwIGfG5mjHgjAiKVBIpvmpsFlaUGBACRoqNKnqifAAF9rJpWsaiyAZherVWxAQK6BYW+WbksKyKSjFVNqcrKy5mjzmvDBTojvcZibNIm3LZzUAGBd92CCGR5rWFi61xy7tbxC0tGLwOVwuD5JvsM9DP3z0XAgQUN8sOWkMRBhjBCAAA7")}
If you want to test it by yourself, please be aware that client-libs are cached. Either delete the cache in /var/clientlibs, or update the css file. Otherwise the configuration changes will have no effect, as you will still see the cached version of the clientlib.

Related

How to change font size on blog pages created on Github using JekyllNow

I created a Github.io blog using JekyllNow. JekyllNow allows you to create it fully on the web itself without having git or Ruby installed locally. i.e. everything was done without any local operation.
I am using the minimal theme. My page is created but the font seems very big. How do I change the font sizes on the page?
If there is a way to make it proportional, that would be even better - i.e. i.e. not just the default font size but also, H1, H2 etc sizes also are proportionally smaller.
Normally we edit the file style.scss located at the root of the jekyll instance.
body {
font-family: "Times New Roman", Times, serif;
}
But, if you are using the default Jekyll theme "Minima", you will have to edit the file minima.scss instead of the style.scss.
So, To change the default font size definition you need to reset the value of `$base-font-size'
$base-font-size: 16px !default;
Also you can change the default font definition itself by resetting the value of $base-font-family variable,
$base-font-family: "PT Serif", serif;
You will also need to remove the !default; suffix at the end of this setting for the new font to be applicable.

Ionic 3 images not displaying on device

I'm developing an Ionic 3 application. it has some custom styling done, and some images are instantiated via scss as backgrounds.
Thing is, when I run it on local (ionic serve) it works just fine.
But when I build an apk and run it on my phone, images are gone.
I've debugged it, and turns that image files are there, but there's no image on them.
Here's a piece of scss:
&:nth-child(3) {
border-right:none;
padding-top: 28px;
background: url('../../../assets/imgs/tabs/more-tab.png') no-repeat center 4px;
background-size: 20px 20px;
}
When I inspect the app from chrome, I can see the image file on sources tab. But there's no preview for it.
I have been researching a bit, and found only relative/absolute path workarounds (Which none worked). Actually, if I change the image path, it's not even loaded inside the apk.
Any idea why this is happening?
I leverage a background image in the app.scss and below works for me on web/ios/android. I think the relative paths are supposed to be in relation to the the output structure of www/build (not the code directory structure). So maybe try with just 1 ../
background: url("../assets/img/truck.png") no-repeat;
So, turns thatin order to load images both with ionic serve and on a build, image path has to be like this:
../assets/path-to-image
Hope this helps someone else

Ionic2 background-image don't appear on device

I've set a custom class .categories e in my Ionic2 app in order to style it with a custom background. The CSS for the background is:
.categories {
background: url('../../assets/img/dark.jpg');
background-size: cover;
}
Everything works just fine in Chrome (using ionic serve), but when I build and run on device, all I see is a plain white background.
I've tried adjusting the path for the background image to assets/img/dark.jpg but no luck. If anyone could possibly help me I'll appreciate your help.
Thank you in advance
alright i think all what you have to do is to change the URL to
background-image: url('../assets/img/dark.jpg');
Background information on the background-image problem
Ionic seems to take all your scss-files, transpile and merge them into one giant css-file
(main.css) which is stored in the {project}/www/build/ directory.
If your background images originally reside in the {project}/src/assets/img/ directory, they are copied to {project}/www/assets/img/.
So regardless of where, or how deep, in the src directory tree your source scss-files are (commonly {project}/src/pages/{pagename}/{pagename}.scss) you need to consider that the paths of referenced images need to be relative to the build directory, not the directory of your scss-file.
When testing the app on a desktop browser using >ionic lab, absolute paths will also work, for example:
background-image: url('/assets/img/dark.jpg');
But in my experience this will not work on actual devices nor in emulators. So don't use it.
As Bouzafour Mohamed mentioned, you need to use the following format to reference your background image.
background-image: url('../assets/img/dark.jpg);
Link will be not like you used
it has to be like relative path to your file
such as your file is on
src > pages > example >example.scss
then you must use image path as
.categories {
background: url('../../assets/img/dark.jpg');
background-size: cover;
}

Background image not showing on iPad and iPhone

I want to create a section with a background covering it in a mobile web page, so I was using the following CSS code:
#section1{
background: url("background1.png") auto 749px;
height: 749px;
}
The background is showing correctly on Android (Chrome, Firefox ...), but it is not showing at all on iPhone or iPad (Safari, Chrome iOS ...). I have tried to set these properties using jQuery when the DOM is ready, but no luck. I read that the size might be a problem, but the image is about 700kB (1124x749px) so it should accomplish the Safari Web Content Guide rules. Which is the problem?
My problem was that iOS doesn't support background-attachment: fixed. Removing that line made the image appear.
It looks like there are workarounds for a fixed background image though: How to replicate background-attachment fixed on iOS
There's a problem with your CSS rule:
Your using the shorthand notation in which the background-size-property comes after the background-position-property and it must be separated by a /.
What you're trying to do is to set the position, but it will fail as auto is not a valid value for it.
To get it to work in shorthand notation it has to look like this:
background: url([URL]) 0 0 / auto 749px;
Also note that there's a value called cover, which may be suitable and more flexible here:
background: url([URL]) 0 0 / cover;
The support for background-size in the shorthand notation is also not very broad, as it's supported in Firefox 18+, Chrome 21+, IE9+ and Opera. It is not supported in Safari at all. Regarding this, I would suggest to always use:
background: url("background1.png");
background-size: auto 749px; /* or cover */
Here are a few examples and a demo, to demonstrate that behavior. You'll see that Firefox for example shows every image except the fist one. Safari on the other hand shows only the last.
CSS
section {
width: 200px;
height: 100px;
border: 1px solid grey;
}
#section1 {
background: url(http://placehold.it/350x150) auto 100px;
}
#section2 {
background: url(http://placehold.it/350x150) 0 0 / auto 100px;
}
#section3 {
background: url(http://placehold.it/350x150) 0 0 / cover;
}
#section4 {
background: url(http://placehold.it/350x150) 0 0;
background-size: cover;
}
Demo
Try before buy
Further reading
MDN CSS reference "background"
MDN CSS reference "background-size"
<'background-size'>
See background-size.
This property must be specified after background-position, separated with the '/' character.
I hope this will help someone in despair.
In my case, it was the size of the image that was too big, so the iPad just wasn't loading it (and it was right actually).
Diminishing its size and quality solved the loading issue.
The problem was not solved when I tried to use properly the background in shorthand. It works when I split the background property:
#section1{
background: url("background1.png");
background-size: auto 749px;
height: 749px;
}
Reduce the image size if nothing else works -- iOS doesn't like large image sizes on mobile and simply won't display the image if it's too large.
Great fundamentals by #insertusernamehere! No matter what I did I couldn't get my image to show up...until, I went back to basics. The image size was too large and iPhone didn't like loading an image of that size, over 700kbs. So, I reduced it to 32kb and we were in action.
Background image disappears on the IOS Browser (iPhone/iPad).
This is the code i used:
/*CSS*/
.bg-image {
background: url([URL]) center/cover no-repeat;
}
Alternatively, img src works on all browsers. It adds the Background Images acc to devices resolution.
<div class="download">
<picture>
<source srcset="/images/ios-device-mobile-v2.png" media="(max-width:450px)"/>
<source srcset="/images/ios-device-mobile-v2.png" media="(min-width: 600px)"/>
<img src="/images/ios-device.png" class="imgright">
</picture>
</div>
This piece of code is tested on iPhone Safari, Android Chrome and web Safari. Hopefully, This will help.
background-attachment: fixed; is not supported by IOS.
You can fix this by keeping the image in the div and positioning the div.
Hope this will work.
I had an negative text-indent that was throwing my background image off the page, so color:Transparent it is then.
I didn't see anyone specifically say this, but you have to define the width too. Makes since, since I set the background size to "contain" - it has to know what the container's dimensions are.
Once I did, the background rendered as expected.
#media only screen and (max-width:599px) {
[id=banner] td { width:480px !important; height:223px !important; background:url('image') no-repeat 0 0 !important; }
}
#media only screen and (max-width:479px) {
[id=banner] td { width:320px !important; height:149px !important; background:url('image') no-repeat 0 0 !important; background-size:contain !important; }
}
Note: The background URL needs to be defined for both breakpoints so that it works for iPhone 5 (iOS7).
Add a background-color solved my problem
background-color: #F4F4F2;
I had to set input { opacity: 0; } for my input + span {} icon to show up.
I don't have a real solution/reason for my similar issue but my background-image PNG image simply wouldn't show up until I moved it to a new folder in my (Cordova) iPad app. I literally moved it from /css/images/sweden/myimage.png to /css/images/sv/myimage.png and it started working. The other odd thing is that ALL other images in the original folder work fine (as background-image). Super strange. If I find the true reason/fix I'll report back.
I tried resizing my background image, made it way too small to test the theory, but it still wouldn’t show on any browser on the iPad (and presumably an iPhone). Tried other solutions that are listed here – still no good. Then I noticed that the element had inherited display: table;. Added display: block; to override that and the background image now displays on all divices that I've tested it on.
It's an old issue, i would like to share my solution here. iOS bigger image than the dimension ignores rendering, please use appropriate use size, not the css height/width. The actual image should not be more than 150% larger in size than the rendering viewpoint.

Detect support for CSS property with CSS only

Short question
Using CSS only, how do I detect that the background-size property is supported? If it's not supported, I would like to provide some fallback CSS. I already know how to do this with Javascript, but it's cleaner with CSS.
Long question
I have a high resolution sprite image that needs to look good on all cell phones, regardless of its exact pixel density. By using a background-size trick, I can scale the sprite appropriately.
.sprite {
background-image: url(sprite180x76.png);
/* 180 / 2 = 90 */
background-size: 90px auto;
}
There are some iOS and Android versions that don't support the background-size property, so the sprite would look twice as big as it should be. For these old systems, I would like to load up a low resolution sprite with no background scaling:
/* fake CSS */
#notSupported(background-size)
.sprite {
background-image: url(sprite90x38.png);
}
}
CSS doesn't have conditional statements as it's not a programming language like Javascript. Although, I believe there might be some kind of conditional statement in the works for CSS.
You'll have to rely on JavaScript to achieve any kind of conditional test case for CSS.
Meaning, you can't directly detect support for CSS.
However, CSS does have a "trick" thanks to its "Cascading" nature, but it's only usable when looking to replace some older code with newer code for the same style.
That sounds funny, here's a couple of examples:
-moz-border-radius: 6px;
-o-border-radius: 6px;
-webkit-border-radius: 6px;
-ms-border-radius: 6px;
border-radius: 6px;
In browsers that do support the official CSS, it will the style as denoted on line 5. While in older versions of say Firefox, line 1 will get applied and line 2-5 will get ignored because they're unknown.
Another (and perhaps better) example could be:
background-color: #AAA;
background-color: rgba(0, 0, 0, 0.5);
This code will give the background a grey color, while newer browsers will give it a black color with a 50% transparency, overriding the old color.
Hope that helps a little.
Cheers!
-- Update --
I did just come across something that might help. In Aaron Gustafson's book "Adaptive Web Design" he mentions how CSS will ignore an entire rule if a given browser/renderer doesn't support a given selector.
With the concept above, if you can find a selector that was not implemented in the older version but is available in the newer version you could do something like this:
/* fake CSS */
.sprite {
background-image: url(sprite90x38.png);
}
[[ selector that is supported by newer browser/OS ]],
.sprite {
background-image: url(sprite180x76.png);
/* 180 / 2 = 90 */
background-size: 90px auto;
}
The idea is that for the "old" browsers you can load the old PNG but for the newer browser it will load the larger PNG and apply background size.
The only thing I would be concerned about is if this causes the supportive browsers to load both images but apply one.
And this still requires finding an unsupported selector in one version of another. Quicksmode.com might help you find one:
http://www.quirksmode.org/css/contents.html
-- UPDATE 2 --
I put this in the comments but I'll add it here as it might help. I spent some time trying to find out what browser version iOS 3.1.3 supported and therefor what selectors might be possible to use with the above trick.
What I found was this Apple developers site: http://developer.apple.com/library/safari/#documentation/appleapplications/reference/SafariCSSRef/Articles/StandardCSSProperties.html
If you do a page search (ctr+f) for background-size, it shows that iOS 1+ supported a proprietary version called:
-webkit-background-size: length
-webkit-background-size: length_x length_y
That might be a possible solution. If you add that before the real one, you can ensure backwards compatability.
-webkit-background-size: length
background-size: length
Hopefully that helps find alternate solutions since the original question of doing a conditional test to see if a rule is supported is not possible in CSS right now.
You can't (for now) detect support of property A and, given or not this support, serve different values for property B with CSS only ...
... except if the browser support for properties A and B is exactly the same! Then instructions below:
selector {
propertyA: valueA;
propertyB: valueB;
}
will both fail or both succeed.
The remaining problem is to find a CSS property that has the exact same support than background-size :)
I was thinking about multi-background : it should (not) work in IE6/7/8 according to CSS Background Properties support in Standardista but I can't test in iOs and Android, only in bada/Dolfin 2.0 (Samsung Wave; also based on Webkit).
Here's a Fiddle : http://jsfiddle.net/PhilippeVay/2VaWu/
that shows a paragraph with only a simple background that any browser should display and then another paragraph with both a simple background and (*) a multi-background resized with background-size that only modern browsers should display (older browsers should display the same background as for the first paragraph).
Fx9 and dolfin 2.0 both display correctly the second paragraph. IE8 doesn't, as expected.
Another solution would be to use a selector understood by browser versions that also understand background-size but not understood by others. Though it's easier to find for IE than for smartphones based on Webkit!
(*) using a different CSS rule with higher specificity, for the purpose of the demo. In real world, there'd be only one rule with simple background defined before the multiple background.