Hue reference chart
Nov 23 | Posted by Jeffrey Barke | Add a Comment
Inspired by Molly Holzschlag at Standards.Next, I created a simple hue reference chart for working with HSLA.
Journal
Archive for the 'CSS' category.
Live blogging Standards.Next: CSS3 for Working Web Designers
Nov 20 | Posted by Jeffrey Barke | Add a Comment
Håkon Wium Lie
Photos and discussion of CERN and Tim Berners-Lee. How the web was actually developed by Tim at CERN. Pretty hilarious.
CSS a response to potential destruction of HTML's markup language with presentation elements. Currently CSS still relies too heavily on images and the occasional table hack.
HTML5 + CSS3 = WEB8. CSS3 is not a single specification, a series of specifications.
CSS1 could style text in an element. Some borders. A revolution when it came out.
For this presentation, Håkon is using a special build of Opera that isn't publicly available.
text-shadow. Web font: Safari, Firefox and Opera.
Håkon believe web fonts is going to be the big new thing. Will create a pre- and post-font Web.
@import url(path/to/font);font-family:Cardiff;
IE is the only one that does not not support this. Argument now breaks out between Håkon and Pete LePage
IE has supported a broad range of fonts since IE 4, but .EOT. However, the above @import is all TTF. IE uses .EOT because font foundries want support for DRM. Check out Fontdeck and Typekit.
At Standards.Next, IE pledged support to add support to TTF along with EOT.
rgba()
background: rgba(0, 0, 255, 0.4); See Molly's presentation.
A review of Opera's support for the CSS 3 features discussed by Andy Budd.
Opera Unite
Turns browser into a server. Allows people to access your machine via http://. Can be quite useful.
It's not the cloud. This service is close to machine and useful for local collaboration. Millions of phones use Opera. Peer-to-peer model. Can take picture and easily
Question/Answer
Q: When will the geolocation build be integrated with the shipping version?
A: Not sure; no date yet. Will probably not occur until the standard is more fixed.
Live blogging Standards.Next: RGB, HSL and Transparency in CSS3
Nov 20 | Posted by Jeffrey Barke | Add a Comment
Molly Holzschlag
RGB: Additive synthesis
Red, Green, Blue: Add colors to get result color. In print world, subtractive. Remove color to get result. R + G + B = white
RGB color notation
RGB in percentage values or RGB in integer values. Not equivalent; so don't use both (mix in a single rule)!
NOT rgb (60, 100, 50%);
Firefox and Opera will ignore the incorrect rule. Safari and IE (5–now) will attempt to correct and end up with a severely washed-out result.
HSL color
Hue, saturation and lightness. Easier and more intuitive way to get to colors we want as designers. Value from 1–360, then adjust saturation and lightness.
- Hue value comes first, using the hue's angle on the color wheel as represented by an integer.
- Saturation comes next, using the percentage of saturation you'd like
- Lightness is next, using the percentage of lightness you' like
HSL advantages
- Not CRT specific
- Easier, more intuitive to work with
- Working with a set of colors allows for easy palette creation
- Reduces errors
- Reduces dependency on charts and other value lookup tools
As adjust saturation, lightness, base-hue remains the same.
RGBA and HSLA
Alpha transparency for both RGB and HSLA.
Notation is the same in both. a value is alpha transparency from 0–1.
Allows for fully opaque to fully transparent.
hsla(0, 100%, 50%, .25)
Supported by Firefox, Webkit and Opera.
Questions/Answers
A: Best article out there on HSLA is Wikipedia. Useful to have the color wheel.
Q: Why is a value decimal instead of percentage?
A: Not sure. No one remembers a discussion about it.
Q: Is this part of the spec?
A: Yes. It is all part of the CSS3 color module.
Live blogging Standards.Next: CSS3 Mastery
Nov 20 | Posted by Jeffrey Barke | Add a Comment
Andy Budd
Border radius
-webkit-border-radius: 30px;
Safari, Chrome, Webkit suppot it. Gecko does as well, but the syntax a bit different. IE 9 to support border-radius as well.
- Currently not supported in Internet Explorer
- Problems with images overlapping corners
Border image
border-image: url(border.png 25% 12% 30% 20%;-webkit-border-image-moz-border-image
An ad-hoc discussion of why vendor-specific extensions exist:
- Useful for testing out features, instead of a general release and then breaking general release codes.
- To become a proper standard, must exist with two different implementations.
Multiple background images
Example Silverback app
background-image: url(path), url(path);background-position: 150% 0, 40% 0;
Older browsers get no background a'tall.
Borders and backgrounds are coming soon (general release).
Gradients and reflections
Buttons are generally bitmap images. Can now create a beautiful button using gradient and reflection purely in CSS.
-webkit-gradient(linear, left top, left bottom, from(#abe143), to(#cccccc));-webkit-box-reflect: below 2px;
[Will need to do some demos of these things]
box-shadow
Box shadow property attaches one or more shadows to box. Offset, size, blur and spread. Can also do inset box shadows. Exactly the same as working with box shadows in Photoshop.
Example: http://2010.uxlondon.com/
Transforms
Can scale, rotate, flip, skew, etc. Can use translate to create animations/move over time
Demos: http://remysharp.com/demo/rubiks/
http://webkit.org/blog-files/leaves/
Questions
Q: Box-shadow has recently been removed from the spec, even though it has been implemented. Should we use it or not?
A: When younger, Andy Budd would have said, "If it's not in the spec, don't use it." Now, he's more tolerant. Not as impressed with the W3C as he once was. Doesn't always give designers what they need.
Molly: It has been difficult to get designers involved with the creation of the spec. As a volunteer, tech spec heavy group, difficult to keep designers active.
Q: Regarding animations, between JavaScript, Canvas, SVG and CSS, what do you think the best technology to bet on is?
A: Easiest is best, why Andy favors CSS.
Q: For individuals, CSS might be easy, but not so for large organizations where designers/developers have a large codebase to absorb. And what about object-oriented CSS? And mixins, variables, etc? (Nicole Sullivan's work)
A: Andy is opposed, because CSS is used more often by designers than programmers. Thinks it’s an interesting concept, but not necessarily the answer.
Having gone from table-based design to CSS-based layouts, works well with 5-6 page templates, but with very large sites, doesn’t necessarily scale. This is where an object-oriented CSS approach comes in use.
Andy thinks the framework is not useful. There is no one size fits all framework. He develops site-specific frameworks. A lot of libraries and components that are re-usuable, but specific to site.. Hates Blueprint, 960.
Q: Tips/techniques on testing?
A: Creates a central page that uses all components. Creates a type of regression testing. If change anything, can scan that page to see if anything is broken. Testing does not occur at the end of the process; testing should be occurring throughout the process. This includes cross-browser. Use VMware.
Liveblogging DelveUI: Rich UI Design
Aug 6 | Posted by Christy Gurga | Add a Comment
Scott Jehl – @scottjehl – Rich UI Design: An Access-Oriented Approach
Download the Presentation from the Filament Group website
- Should test pages on screen readers
- All or nothing is a bad approach to accessibility
- Consider Universal Access in all stage of development
- Instead of asking for browser, run tests to determine browser’s capabilities. Available at filimentgroup
- If browser fails tests, serve “basic” version with “Safe CSS”
- No floats
- No dark text on light backgrounds
- No background images
- No positioning
- If browser passes test:
- Add class “enhanced” to html element
- Dynamically load CSS and JavaScript
- Cookie the results
- Provide link to low-bandwidth version (which will change cookie and remove enhanced class)
- If building widgets not included in jqueryui themeroller:
- Replicate behavior before you extend
- Proxy back to native control
- Follow conventions and user expectations
- Consider the mouse optional
- Use WAI-ARIA
