Reactions to story from Trolltech Labs Blogs

• 

  HTML5 video with reflection

  http://ariya.blogspot.com/2008/05/html5-video-with-reflectio...
  115 days ago in D.C.T.W.Y.C.D.T · Authority: 27

  Poor Tor Arne. After his super-secret project is leaked, our HTML5 Media ninja has no other choice but to reveal all his cards. HTML5 video/audio, important for next-gen web content, will be available in Firefox, Opera, and Safari, is finally supported in QtWebKit, thanks to Tor Arne. As he wrote there, basically we use Phonon, the multimedia API available from Qt 4.4 onwards. Since WebKit (thus also QtWebKit) already supports CSS reflections, I decided to combine both the video and the reflection effect. Of course, it just works (click-to-enlarge): (As a new WebKit hacker, my skill is only at cranking HTML+CSS like this. Credits should go to Tor Arne and other WebKit chaps for doing the real work). If you have sharp eyes, you can see that the following HTML snippet is all you need: More info on the video tag is available elsewhere. Bear in mind that this probably does not work in many common browsers like Firefox 2. You need the next-gen web browsers, try Safari 3.1. You can even use Arora, if you build it against WebKit trunk. Note that all the bleeding-edge features are available only in WebKit trunk. Unless you want to experience the hassle of building QtWebKit yourself (hint: it is not that difficult actually), the best bet is of course to wait for the Qt 4.5. With the recent addition of NSAPI plugin support (yes, you can watch YouTube using QtWebKit) and now HTML5 Media element, I am excited to see the what kind of plasmoids will show up. But likely within the frame of KDE 4.2, if not 4.3. So, yes, it will take time. Once it is there, however, the sky is the limit. Using both Flash and Media element, imagine all the QtWebKit-based plasmoids deliver the best of YouTube videos, the highest rated movie trailers from the theaters in your neighborhood, some webcam views from your upcoming holiday destination, hand-picked favorite Internet radios and podcasts, etc etc to your desktop.
• 

  Be my mirror, my sword and shield

  http://ariya.blogspot.com/2008/07/be-my-mirror-my-sword-and-...
  37 days ago in D.C.T.W.Y.C.D.T · Authority: 27

  The real blog title should be: experimental live tab (thumbnail) preview in Arora. The nice thing about hacking on WebKit is, whenever you feel you want to experiment with some whacky web browser features, you can just go ahead and implement it. The code base is clean and easy to understand. For example, I always wonder how difficult it is to have a tab thumbnail preview like in Opera, where you hover the cursor on a tab and it displays the preview of the web page in that tab. This makes it easy for you to work with dozens of tabs (I know someone in Trolltech who opens at least 30 tabs in a browser :-), because often you can have a glance of the tab before really switch to that tab. Today [1] I decided to give it a try, of course with QtWebKit. The victim is Arora, the famous lightweight QtWebKit-based web browser. Giving it a thought, there are surely million ways to do it, from QPainter redirection, grabWidget() abuse, Widgets-on-Canvas with GraphicsView, scaled painting even to a GLWidget, you name it. As a starting point, I picked the simplest one [2]: ask the web view to render to a pixmap and scale the pixmap. After an hour or so, I got to put Arora on par with Opera, in terms of tab thumbnail preview [3]. However, the fun just starts now. Remember video with CSS reflection and HTML 5 video support? If you open a tab and plays a video there, then you switch to another tab, then hover the cursor on the previous tab, you can see that the preview is live! [4] The video even plays in that tiny little window. Since it is impossible to show this live preview feature in a completely static screenshot, I made a 133-second screencast and put it on YouTube. See the video or watch it here: As you can see, basically I opened three tabs: Google (0:04), a web page that plays Transformer trailer video (0:09), and another page that plays the same trailer but with added reflection effect (0:24). Then I switched back to the Google page (0:34) and placed the mouse cursor on the trailer tab (0:38). There you can see the minified trailer running nicely. Whacky? You bet :-) There is a big room for improvement, though. For starter, I just did a hack and repainted the preview at 10 fps even though nothing has been changed in the web page (e.g. the page contains no video or animation). This needs to be optimized, say by finding out a way to update only when it is absolutely necessary. Also, the preview scaling could be better, maybe using a QGLWidget for the preview viewport so the graphics card does the scaling for use. Once real full-page zoom is landed for QtWebKit, it is also interesting to explore it for painting the preview. I'm open for more ideas, especially tricks that can push the performance. [1] After few days only focusing on bug fixing and other usual stuff. Yes, even QtWebKit in Qt 4.4.2 will receive some love and a bunch of bug fixes. [2] The method of course can be improved later on. [3] The code can be found in my cloned Arora repository, under the live-preview branch. [4] Quite a coincidence, but the radio just plays I used to roll the dice, ..... But I reckon you assume that already.
• 

  quattro quattro uno

  http://ariya.blogspot.com/2008/08/quattro-quattro-uno.html
  35 days ago in D.C.T.W.Y.C.D.T · Authority: 27

  In case you live under the rock and miss Thiago's latest blog post, Qt 4.4.1 was just released. This is just a few days after KDE 4.1 was announced and close to three months after Qt 4.4.0 was out. This patch release adds tons of bug fixes to the 4.4.0 release. For the WebKit team inside Trolltech Nokia's Qt Software Unit (by team here it means a group of developers you can count with one of your hand, and still not everyone works full-time on WebKit), beside the usual feature development (like Phonon-based media and Netscape plugin support), we did spend a lot of time fixing important bugs, as evidenced from the 4.4.1 changes. On to Qt 4.4.2 and KDE 4.2. The latter would be ten percent of the ultimate answer to life, the universe, and everything...
• 

  video element by WebKit

  http://d.hatena.ne.jp/saiton/20080516/1210911111
  113 days ago in A blog? with Σαιτω · Authority: 41

  ■video element by WebKit http://labs.trolltech.com/blogs/2008/05/13/top-secret-hush-hush/ バックエンドに使われている Phonon については、「WebKitと統合したQtをデモ、Trolltech」でもふれられている。
• 

  Ariya Hidayat: HTML5 video with reflection

  http://planet.vavai.com/?p=3763
  116 days ago in Planet Vavai · Authority: 7

  Ariya Hidayat: HTML5 video with reflection Written by Planet Terasi on May 13, 2008 – 6:15 pm - Poor Tor Arne. After his super-secret project is leaked, our HTML5 Media ninja has no other choice but to reveal all his cards. HTML5 video/audio, important for next-gen web content, will be available in Firefox, Opera, and Safari, is finally supported in QtWebKit, thanks to Tor Arne. As he wrote there, basically we use Phonon, the multimedia API available from Qt 4.4 onwards. Since WebKit (thus also QtWebKit) already supports CSS reflections, I decided to combine both the video and the reflection effect. Of course, it just works (click-to-enlarge): (As a new WebKit hacker, my skill is only at cranking HTML+CSS like this. Credits should go to Tor Arne and other WebKit chaps for doing the real work). If you have sharp eyes, you can see that the following HTML snippet is all you need: <video src="videofile.ogg" controls="true" style="-webkit-box-reflect:below 1px;" /> More info on the video tag is available elsewhere. Bear in mind that this probably does not work in many common browsers like Firefox 2. You need the next-gen web browsers, try Safari 3.1. You can even use Arora, if you build it against WebKit trunk. Note that all the bleeding-edge features are available only in WebKit trunk. Unless you want to experience the hassle of building QtWebKit yourself (hint: it is not that difficult actually), the best bet is of course to wait for the Qt 4.5. With the recent addition of NSAPI plugin support (yes, you can watch YouTube using QtWebKit) and now HTML5 Media element, I am excited to see the what kind of plasmoids will show up. But likely within the frame of KDE 4.2, if not 4.3. So, yes, it will take time. Once it is there, however, the sky is the limit. Using both Flash and Media element, imagine all the QtWebKit-based plasmoids deliver the best of YouTube videos, the highest rated movie trailers from the theaters in your neighborhood, some webcam views from your upcoming holiday destination, hand-picked favorite Internet radios and podcasts, etc etc to your desktop. Posted in Uncategorized | Comments Off

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