I’ll just include the relevant stuff here.Since they broke through into the Australian music scene more than a decade ago, Tash Sultana has been nothing less than a musical force. There’s quite a lot of CSS in the page, some of which isn’t relevant to the Cover Flow effect. A div to hold the current image’s caption, and.A range slider that the user can drag to move between images.Each image has alt text which we’ll use for its caption. A #gallery div holding the slide images.To see the full commented code all in one place, you can either view the demo then view the page source, or download the code using the button at the top of the article. Now let’s look at the code in a bit more depth, step by step… This ensures that the current slide remains centred, and the images scale appropriately to fill the window height. Add a resize handler to the window that redraws the gallery when the user resizes the browser.We’ll also use a plugin that detects swipe gestures, so mobile users can navigate the gallery using swipe gestures. Also add a keydown handler to allow the user to change the current slide with the left and right arrow keys. Similarly, add a change handler to the slider so that the current slide is updated when the slider is moved.Once we have a new current slide, we simply update all the slide positions in 3D space, and let the CSS transition move the slides gradually from their old to their new positions. Add a click handler to each slide div that makes that slide the new current slide.All slides to the left and right of the current slide are moved slightly backward “into” the screen so they sit in the background, and rotated slightly clockwise or counter-clockwise as appropriate. The current slide faces forward, at the front of the 3D space. Position each slide div in 3D space according to its position in the list.Wrap a div around each image to contain both the image and reflection, and to isolate the reflection from the ones behind it.Here’s the rough plan for our JavaScript code: HTML5 sliders combined with various WebKit-specific CSS properties and shadow DOM pseudo-elements let us create a custom “scrollbar” much like the original.CSS reflections make it easy to add a reflection below each slide image.By adding a sharp cubic bezier curve function to the transition, we can make it start very quickly and ease out very slowly, just like the real Cover Flow. All we need to do is add a transition, specify a new position and angle for each slide using 3D transforms, and the browser smoothly transitions the slide from the old to the new position. CSS transitions let us animate the slides’ movement automatically.WebKit handles the projection onto the 2D page automatically. CSS 3D transforms let us position and rotate the slide images in 3D space.So how can we go about recreating the Cover Flow effect using nothing but CSS and JavaScript? Well, it turns out that WebKit contains all we need to achieve the various effects used in Cover Flow: I hope you enjoy reading it! The basic idea Along the way we’ll explore many of WebKit’s powerful CSS features, and look at various techniques for positioning and animating objects in 3D. In this tutorial I’ll explain how I created the Cover Flow gallery demo. I hope that one day I can extend the demo to work in other browsers once they support the relevant CSS3 features. So you’ll need to view the demo on Safari for now. It should theoretically work in Chrome too, but Chrome’s handling of rotateY() seems to be broken at the time of writing. The code uses quite a few CSS properties of the WebKit browser engine, and currently it only works in Safari on Mac and Windows, and Mobile Safari on iOS (iPhone, iPod touch and iPad).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |