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SVG Gradient Background in Opera (9.6)

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September 15th, 2008

Intro

There is a lot going on in the CSS3 and HTML5 development. Rounded borders (radius) and multi-image backgrounds are both supported in latest Safari/Webkit and Firefox beta’s. Opera has always been a pioneer with CSS and SVG support and has chosen to walk a more interesting road. Opera gives you the opportunity to treat SVG objects as any other image including background image declared in CSS. An SVG-object as a background options gives you all the power of radius and multi-image background plus a lot more: stars, ellipse, triangles, multi-images, animated background and easy javascript driven user customisable backgrounds.

Examples

Let’s have some examples.

SVG backgrounds are really nice and powerful. SVG can be used for gradients, rounded corners, watermarks, graphics and even animated backgrounds. SVG can also be used for list style images for and <li> elements in ordered and unordered lists.

There is a bug though. If you give a div a border there are rendering issues as you can see here.

Screenshot in Opera 9.6

Screenshot Opera 9.6

Example 1  Background

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

Example 2 Background with border

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

Example 3 Background with padding

Lorem ipsum dolor sit

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

Example 4 Background with border and padding

Lorem ipsum dolor sit

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

Lorem ipsum dolor sit amet consectetuer Ut ut laoreet auctor senectus. Ornare aliquam adipiscing Proin condimentum neque Nullam senectus Curabitur Aliquam Vestibulum. Morbi congue et pede ligula dictum pretium mauris nonummy ipsum In. Adipiscing a condimentum pede et felis faucibus id porttitor et laoreet. Donec pede semper hac quis wisi In eget et leo dui. Justo Vestibulum.

Eros nibh dis ultrices Vivamus quis nibh dolor consectetuer ipsum pharetra. Quisque vestibulum Suspendisse ac nibh ac tempus neque Lorem laoreet diam. Cursus porta ut accumsan orci pretium wisi Nam mattis sed libero. Metus dictumst Curabitur urna dui nec condimentum dolor sem laoreet penatibus. Lacinia egestas ligula accumsan et elit eget a Aliquam lacus Sed.

1 Comment

Rotating Canvas graphics

{,,}
September 12th, 2008

Rotating canvas example

The canvas element let you do some marvelous tricks with images. Imagine the canvas as an IMG element extended with the ability to set/change every pixel of it.

In this demo an image is loaded in an IMG element, this image is copied in the canvas element and rotated 360 degrees. You can see the original image just below the canvas element.

Refresh page to restart drawing!


Picture used for drawing

Interestingly, you see quite different rendering qualities in the browsers. MS Explorer doesn’t show anything. Google Chrome surprisingly shows the worst quality, it’s output is jagged and doesn’t seemed to be aliased. Opera is best, followed by Firefox and Safari.

I did expect to see speed differences, no render differences. If you don’t want to test in all browsers, or you don’t have them installed, you can see the results here.