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  • Desktop runs very slick, animations are all fast and flawless. Moving windows around, however, is very laggy. Why?

    - by Muu
    This isn't a question about Ubuntu being laggy in general - not at all, in fact, it's very slick and fast for me. Clicking the "Workspace Switcher" in the dock performs the animation immediately and very smoothly. Switching between workspaces with the arrow keys - again, flawlessly. My computer has a resolution of 2560x1440 on a 27" display (no, not an Apple product - though my monitor has the same panel that Apple use in their cinema displays). It's powered by an Nvidia GeForce GTX 470 - easily enough to handle it - and an Intel i3. Hardware is not the issue. I am running Ubuntu 11.10 (upgraded from 11.04). I had the same issue in 11.04. I'm running the "NVIDIA accelerated graphics driver (post-release updates) (version current-updates)" from the additional drivers dialogue. Two drivers have been suggested to me via that dialogue and I've tried both - same effect with each. The driver is "activated and currently in use". Any other information required, let me know and I'll post it. I'm a programmer who works with Linux daily (both as a job and as an interest) so technical instructions are fine. I've noticed that Compiz uses a lot of CPU when moving windows around and it's memory usage is relatively high (though possibly expected for Compiz): 1671 user 20 0 478m 286m 33m S 1 7.3 12:44.05 compiz And one more thing - occasionally moving windows around is fast. But it only happens when all applications are closed, and even then it sometimes doesn't. Something must be interfering, but what? I'll try and find out but in the meantime, any suggestions are much appreciated :-)

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  • HP and Microsoft: That&rsquo;s What Friends Are For ?

    - by andrewbrust
    Today, HP pre-announced the second coming out for its recently acquired Palm webOS mobile operating system.  I happen to think webOS is quite good, and when the Palm Pre first came out, I thought it a worthwhile phone.  I was worried though that the platform would never attract the developer mindshare it needed to be competitive, and that turned out to be the case.  But then HP acquired Palm and announced it would be revamping the webOS offering, not only on phones, but also on tablets.  It later announced that it would also use webOS as an embedded solution on HP printers. The timing of this came shortly after HP had announced it would be producing a “Slate” product running Windows 7. After the Palm deal, HP became vague about whether the Windows-powered slate would actually come out.  They did, in fact, bring the Slate 500 to market, but by some accounts, they only built 5000 units. Another recent awkward moment between HP and Microsoft: HP withdrew itself from the Windows Home Server ecosystem.  That one hurt, as they were the dominant OEM there.  But Microsoft’s decision to kill Drive Extender had driven away many parties, not just HP. On Wednesday, HP came out with their TouchPad, and new phone models.  Not a nice thing for Windows Phone 7, but other OEMs are taking a wait and see attitude there too, I suppose.  There was one more zinger though, and it was bigger: HP announced they’d be porting webOS to PCs. No Windows Phone 7? OK. No Windows Home Server?  Whatcha gonna do?  But no Windows 7 either?  From HP?  What comes after that, no ink and toner? Some people think Microsoft’s been around too long to be relevant.  But HP started out making oscilloscopes!  The notion that HP is too cool for Windows school is a it far-fetched.  This is the company that bought EDS. This is the company that bought Compaq.  And Compaq was the company that bought Digital Equipment Corporation.  Somehow, I don’t think the VT 220 outclasses Windows PCs. What could possibly be going on?  My sense is that HP wants to put webOS on PCs that also have Windows, and that people will buy because they have Windows.  And for every one of those sold, HP gets to count, technically speaking, another webOS unit in the install base.  webOS is really nice, as I said.  But being good isn’t good enough when you are trying to get market share.  Number of units shipped matters.  The question is whether counting PCs with webOS installed, but dormant, is helpful to HP’s cause.  Seems like a funny way to account for market share, and a strange way to treat a big partner in Redmond.

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  • How to make Ubuntu recognize an unknown external display (so I can adjust its resolution)?

    - by WagnerAA
    I have a Dell laptop with an external monitor attached (a Samsumg SyncMaster 931c). My laptop display was recognized, and I can adjust its optimum resolution. My external display is still unknown, thus I'm stuck at a lower resolution (1024x768): I tried the "Detect Displays" button, but it didn't work, nothing happens. I recently upgraded from Ubuntu 12.04 to 12.10. Things were working before. I don't know if I can actually change this configuration, or if this is a bug. I searched for an answer here and also in Launchpad's website, but found none. I even tried to install Nvidia drivers, and just messed things up. It seems I wasn't even using nvidia before, as I guessed by looking at my additional drivers configuration: My laptop has an Intel chipset, I guess: $ dpkg --get-selections | grep -i -e nvidia -e intel intel-gpu-tools install libdrm-intel1:amd64 install libdrm-intel1:i386 install nvidia-common install xserver-xorg-video-intel install I don't have an xorg.conf file (I think this is nvidia related, am I right?): $ cat /etc/X11/xorg.conf cat: /etc/X11/xorg.conf: No such file or directory $ ls -l /etc/X11/ total 76 drwxr-xr-x 2 root root 4096 Out 19 23:41 app-defaults drwxr-xr-x 2 root root 4096 Abr 25 2012 cursors -rw-r--r-- 1 root root 18 Abr 25 2012 default-display-manager drwxr-xr-x 4 root root 4096 Abr 25 2012 fonts -rw-r--r-- 1 root root 17394 Dez 3 2009 rgb.txt lrwxrwxrwx 1 root root 13 Mai 1 03:33 X -> /usr/bin/Xorg drwxr-xr-x 3 root root 4096 Out 19 23:41 xinit drwxr-xr-x 2 root root 4096 Jan 23 2012 xkb -rw-r--r-- 1 root root 0 Out 24 08:55 xorg.conf.nvidia-xconfig-original -rwxr-xr-x 1 root root 709 Abr 1 2010 Xreset drwxr-xr-x 2 root root 4096 Out 19 10:08 Xreset.d drwxr-xr-x 2 root root 4096 Out 19 10:08 Xresources -rwxr-xr-x 1 root root 3730 Jan 20 2012 Xsession drwxr-xr-x 2 root root 4096 Out 20 00:11 Xsession.d -rw-r--r-- 1 root root 265 Jul 1 2008 Xsession.options -rw-r--r-- 1 root root 13 Ago 15 06:43 XvMCConfig -rw-r--r-- 1 root root 601 Abr 25 2012 Xwrapper.config Here is some information I gathered by looking at other related posts: $ sudo lshw -C display; lsb_release -a; uname -a *-display:0 description: VGA compatible controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 07 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:48 memory:f6800000-f6bfffff memory:d0000000-dfffffff ioport:1800(size=8) *-display:1 UNCLAIMED description: Display controller product: Mobile 4 Series Chipset Integrated Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 07 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 resources: memory:f6100000-f61fffff LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:qt4-3.1-amd64:qt4-3.1-noarch Distributor ID: Ubuntu Description: Ubuntu 12.10 Release: 12.10 Codename: quantal Linux Batcave 3.5.0-17-generic #28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux $ xrandr -q Screen 0: minimum 320 x 200, current 2304 x 800, maximum 32767 x 32767 LVDS1 connected 1280x800+0+0 (normal left inverted right x axis y axis) 286mm x 1790mm 1280x800 59.9*+ 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 connected 1024x768+1280+32 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9 DP1 disconnected (normal left inverted right x axis y axis) If there's anything else I can do, any other information I can post here, to help me configure this external display, please let me know. If this is actually a bug, I apologize (I know bugs are not allowed here), but I really wasn't sure. And I will promptly file a bug report in Launchpad if that's the case. Thanks a lot in advance. ;)

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  • Converting .docx to pdf (or .doc to pdf, or .doc to odt, etc.) with libreoffice on a webserver on the fly using php

    - by robertphyatt
    Ok, so I needed to convert .docx files to .pdf files on the fly, but none of the free php libraries that were available let me do it on my server (a webservice was not good enough). Basically either I needed to pay for a library (and have it maybe suck) or just deal with the free ones that didn't convert the formatting well enough. Not good enough! I found that LibreOffice (OpenOffice's successor) allows command line conversion using the LibreOffice conversion engine (which DID preserve the formatting like I wanted and generally worked great). I loaded the latest version of Ubuntu (http://www.ubuntu.com/download/ubuntu/download) onto my Virtual Box (https://www.virtualbox.org/wiki/Downloads) on my computer and found that I was able to easily convert files using the commandline like this: libreoffice --headless -convert-to pdf fileToConvert.docx -outdir output/path/for/pdf I thought: sweet...but I don't have admin rights on my host's web server. I tried to use a "portable" version of LibreOffice that I obtained from http://portablelinuxapps.org/ but I was unable to get it to work on my host's webserver, because my host's webserver didn't have all the dependencies (Dependency Hell! http://en.wikipedia.org/wiki/Dependency_hell) I was at a loss of how to make it work, until I ran across a cool project made by a Ph.D. student (Philip J. Guo) at Stanford called CDE: http://www.stanford.edu/~pgbovine/cde.html I will let you look at his explanations of how it works (I followed what he did in http://www.youtube.com/watch?feature=player_embedded&v=6XdwHo1BWwY, starting at about 32:00 as well as the directions on his site), but in short, it allows one to avoid dependency hell by copying all the files used when you run certain commands, recreating the linux environment where the command worked. I was able to use this to run LibreOffice without having to resort to someone's portable version of it, and it worked just like it did when I did it on Ubuntu with the command above, with a tweak: I needed to run the wrapper of LibreOffice the CDE generated. So, below is my PHP code that calls it. In this code snippet, the filename to be copied is passed in as $_POST["filename"]. I copy the file to the same spot where I originally converted the file, convert it, copy it back and then delete all the files (so that it doesn't start growing exponentially). I did it this way because I wasn't able to make it work otherwise on the webserver. If there is a linux + webserver ninja out there that can figure out how to make it work without doing this, I would be interested to know what you did. Please post a comment or something if you did that. <?php //first copy the file to the magic place where we can convert it to a pdf on the fly copy($time.$_POST["filename"], "../LibreOffice/cde-package/cde-root/home/robert/Desktop/".$_POST["filename"]); //change to that directory chdir('../LibreOffice/cde-package/cde-root/home/robert'); //the magic command that does the conversion $myCommand = "./libreoffice.cde --headless -convert-to pdf Desktop/".$_POST["filename"]." -outdir Desktop/"; exec ($myCommand); //copy the file back copy("Desktop/".str_replace(".docx", ".pdf", $_POST["filename"]), "../../../../../documents/".str_replace(".docx", ".pdf", $_POST["filename"])); //delete all the files out of the magic place where we can convert it to a pdf on the fly $files1 = scandir('Desktop'); //my files that I generated all happened to start with a number. $pattern = '/^[0-9]/'; foreach ($files1 as $value) { preg_match($pattern, $value, $matches); if(count($matches) ?> 0) { unlink("Desktop/".$value); } } //changing the header to the location of the file makes it work well on androids header( 'Location: '.str_replace(".docx", ".pdf", $_POST["filename"]) ); ?> And here is the tar.gz file I generated I generated with CDE. To duplicate what I did exactly, put the tar.gz file in a folder somewhere. I will call that folder the "root". Make a new folder called "documents" in the "root" folder. Unpack the tar.gz and run the php script above from the "documents" folder. Success! I made a truly portable version of LibreOffice that can convert files on the fly on a webserver using 100% free, open source software!

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  • WSMethodInvocationSetCallBack symbol not found after importing files generated from WSMakeStubs

    - by racingcow
    Hello, I am pretty new to Objective-C, and I am trying to write an iPhone app to call a simple web service. I used WSMakeStubs to point to my WSDL file, and it generated 4 files for me... WSGeneratedObj.h WSGeneratedObj.m CtServices2.h CtServices2.m I added only the WSGeneratedObj.h and WSGeneratedObj.m files into a new iPhone app, added in the mobile core services framework from... /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk/System/Library/Frameworks/MobileCoreServices.framework ...and then compiled. I get the following errors... Building target “iMagioSearch2” of project “iMagioSearch2” with configuration “Debug” Checking Dependencies Ld /Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2/build/Debug-iphonesimulator/iMagioSearch2.app/iMagioSearch2 normal i386 cd /Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2 setenv MACOSX_DEPLOYMENT_TARGET 10.5 setenv PATH "/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin" /Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin/gcc-4.2 -arch i386 -isysroot /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.sdk -L/Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2/build/Debug-iphonesimulator -F/Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2/build/Debug-iphonesimulator -filelist /Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2/build/iMagioSearch2.build/Debug-iphonesimulator/iMagioSearch2.build/Objects-normal/i386/iMagioSearch2.LinkFileList -mmacosx-version-min=10.5 -framework Foundation -framework UIKit -framework CoreGraphics -framework MobileCoreServices -o /Users/Teresa/Desktop/iMagioSearch2/iMagioSearch2/build/Debug-iphonesimulator/iMagioSearch2.app/iMagioSearch2 Undefined symbols: "_kWSSOAPBodyEncodingStyle", referenced from: _kWSSOAPBodyEncodingStyle$non_lazy_ptr in WSGeneratedObj.o "_WSMethodInvocationCreate", referenced from: -[WSGeneratedObj createInvocationRef:methodName:protocol:style:soapAction:methodNamespace:] in WSGeneratedObj.o "_kWSSOAPMethodNamespaceURI", referenced from: _kWSSOAPMethodNamespaceURI$non_lazy_ptr in WSGeneratedObj.o "_WSMethodInvocationUnscheduleFromRunLoop", referenced from: -[WSGeneratedObj getResultDictionary] in WSGeneratedObj.o -[WSGeneratedObj unscheduleFromRunLoop:mode:] in WSGeneratedObj.o "_WSMethodResultIsFault", referenced from: -[WSGeneratedObj isFault] in WSGeneratedObj.o "_kWSMethodInvocationResult", referenced from: _kWSMethodInvocationResult$non_lazy_ptr in WSGeneratedObj.o "_WSMethodInvocationSetProperty", referenced from: -[WSGeneratedObj createInvocationRef:methodName:protocol:style:soapAction:methodNamespace:] in WSGeneratedObj.o -[WSGeneratedObj createInvocationRef:methodName:protocol:style:soapAction:methodNamespace:] in WSGeneratedObj.o -[WSGeneratedObj createInvocationRef:methodName:protocol:style:soapAction:methodNamespace:] in WSGeneratedObj.o "_WSMethodInvocationScheduleWithRunLoop", referenced from: -[WSGeneratedObj getResultDictionary] in WSGeneratedObj.o -[WSGeneratedObj scheduleOnRunLoop:mode:] in WSGeneratedObj.o "_kWSHTTPExtraHeaders", referenced from: _kWSHTTPExtraHeaders$non_lazy_ptr in WSGeneratedObj.o "_WSMethodInvocationSetParameters", referenced from: -[WSGeneratedObj setParameters:values:names:] in WSGeneratedObj.o "_WSMethodInvocationSetCallBack", referenced from: -[WSGeneratedObj createInvocationRef:methodName:protocol:style:soapAction:methodNamespace:] in WSGeneratedObj.o ld: symbol(s) not found collect2: ld returned 1 exit status Does anyone know of anything I can check or why I might be getting this error? Thanks, David

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  • Why do i get E_ACCESSDENIED when reading public shortcuts through Shell32?

    - by corvuscorax
    I'm trying to read the targets of all desktop shortcuts in a C# 4 application. The shortcuts on a windows desktop can come from more that one location, depending on whether the shortcut is created for all users or just the current user. In this specific case I'm trying to read a shortcut from the public desktop, e.g. from C:\Users\Public\Desktop\shortcut.lnk. The code is like this (path is a string contaning the path to the lnk file): var shell = new Shell32.ShellClass(); var folder = shell.NameSpace(Path.GetDirectoryName(path)); var folderItem = folder.ParseName(Path.GetFileName(path)); if (folderItem != null) { var link = (Shell32.ShellLinkObject)folderItem.GetLink; The last line throws an System.UnauthorizedAccessException, indicating that it's not allowed to read the shortcut file's contents. I have tried on shortcut files on the user's private desktop (c:\Users\username\Desktop) and that works fine. So, my questions are: (1) why is my application not allowed to /read/ the shortcut from code, when I can clearly read the contents as a user? (2) is there a way to get around this? Maybe using a special manifest file for the application? And, by the way, my OS is Windows 7, 64-bit. be well -h-

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  • Python: Copying files with special characters in path

    - by erikderwikinger
    Hi is there any possibility in Python 2.5 to copy files having special chars (Japanese chars, cyrillic letters) in their path? shutil.copy cannot handle this. here is some example code: import copy, os,shutil,sys fname=os.getenv("USERPROFILE")+"\\Desktop\\testfile.txt" print fname print "type of fname: "+str(type(fname)) fname0 = unicode(fname,'mbcs') print fname0 print "type of fname0: "+str(type(fname0)) fname1 = unicodedata.normalize('NFKD', fname0).encode('cp1251','replace') print fname1 print "type of fname1: "+str(type(fname1)) fname2 = unicode(fname,'mbcs').encode(sys.stdout.encoding) print fname2 print "type of fname2: "+str(type(fname2)) shutil.copy(fname2,'C:\\') the output on a Russian Windows XP C:\Documents and Settings\+????????????\Desktop\testfile.txt type of fname: <type 'str'> C:\Documents and Settings\?????????????\Desktop\testfile.txt type of fname0: <type 'unicode'> C:\Documents and Settings\+????????????\Desktop\testfile.txt type of fname1: <type 'str'> C:\Documents and Settings\?????????????\Desktop\testfile.txt type of fname2: <type 'str'> Traceback (most recent call last): File "C:\Test\getuserdir.py", line 23, in <module> shutil.copy(fname2,'C:\\') File "C:\Python25\lib\shutil.py", line 80, in copy copyfile(src, dst) File "C:\Python25\lib\shutil.py", line 46, in copyfile fsrc = open(src, 'rb') IOError: [Errno 2] No such file or directory: 'C:\\Documents and Settings\\\x80\ xa4\xac\xa8\xad\xa8\xe1\xe2\xe0\xa0\xe2\xae\xe0\\Desktop\\testfile.txt'

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  • Chat with Audio/Video and DesktopSharing

    - by RavIncredible
    Hi All, I am working on an application where I like to bundle 3 things: 1. Chat 2. Audio / Video Conversation 3. Desktop Sharing I would like to know the approach and where to look in for this, few of the things that I am aware of are: Chat and Audio – I can go with Jabber server and configure any SIP server like asterix for audio calls. Desktop Sharing – I have read about silverlite coming up with Desktop Sharing modules, but what would be only targeted to Windows. I would like to have sharing for windows, mac and linux OS. I don’t mind building separate clients for each. But I like to know which common protocol has to be used for Desktop sharing. In other words something similar to team viewer. Please suggest. Video Conference – I totally don’t have any idea about this. The application that I am supposed to build has to target the below platforms: 1. Window, Mac, Linux Desktop 2. iPhone, iPad and Android Devices. Would appreciate any help or reference or links to any of the topics (Chat, A/V and desktop sharing). Thanks Ravi

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  • How to Add Proprietary Drivers to Ubuntu 10.04

    - by Matthew Guay
    Does the hardware on your Ubuntu system need proprietary drivers work at peak performance?  Today we take a look how easy version 10.04 makes it to install them. Ubuntu 10.04 finally automatically recognizes and installs drivers for most hardware today, it even recognized and configured Wi-Fi drivers correctly every time in our tests.  This is in contrast to the past, when it was often difficult to get hardware to work in Linux.  However, most video cards still need proprietary drivers from their manufacturer to get full hardware video acceleration. Even though Ubuntu doesn’t include any non-open source components, it still makes it easy to install proprietary drivers if you wish.  When you first install and boot into Ubuntu, you may see a popup informing you that “restricted” drivers are available. You may see a notification asking you if you’d like to install optional drivers from your graphics card manufacturer when you try to enable advanced desktop effects.  Click Enable to directly install the drivers right there. Or, you can select the tray icon from the first popup, and click Install drivers. Alternately, if the tray icon has disappeared, click System, then Administration, and select Hardware Drivers.   This will open a dialog showing all the proprietary drivers available for your system, which may include drivers for your video card and other hardware depending on your computer.  Select the driver you wish to install, and click Activate. Enter your password, and then Ubuntu will download and install the driver without any more input.  After installation you may be prompted to reboot your system. Now, you should be able to take full advantage of your hardware, including fancy desktop effects with hardware acceleration. If you ever wish to remove these drivers, simply re-open the drivers dialog as above, select the driver, and click Remove.  Once again, a reboot may be required to finish the process. Conclusion Ubuntu has definitely made it easier to use Linux on your desktop computer, no matter what hardware you have.  If your video card or other hardware require proprietary drivers, it makes them available and simple to install.  And, best of all, all of your drivers stay updated with your software updates, so you can be sure you’re always running the latest. Similar Articles Productive Geek Tips Adding extra Repositories on UbuntuBackup and Restore Hardware Drivers the Easy Way with Double DriverCopy Windows Drivers From One Machine to AnotherInstalling PHP4 and Apache on UbuntuInstalling PHP5 and Apache on Ubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 VMware Workstation 7 Acronis Online Backup Gmail Button Addon (Firefox) Hyperwords addon (Firefox) Backup Outlook 2010 Daily Motivator (Firefox) FetchMp3 Can Download Videos & Convert Them to Mp3 Use Flixtime To Create Video Slideshows

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  • To 'seal' or to 'wrap': that is the question ...

    - by Simon Thorpe
    If you follow this blog you will already have a good idea of what Oracle Information Rights Management (IRM) does. By encrypting documents Oracle IRM secures and tracks all copies of those documents, everywhere they are shared, stored and used, inside and outside your firewall. Unlike earlier encryption products authorized end users can transparently use IRM-encrypted documents within standard desktop applications such as Microsoft Office, Adobe Reader, Internet Explorer, etc. without first having to manually decrypt the documents. Oracle refers to this encryption process as 'sealing', and it is thanks to the freely available Oracle IRM Desktop that end users can transparently open 'sealed' documents within desktop applications without needing to know they are encrypted and without being able to save them out in unencrypted form. So Oracle IRM provides an amazing, unprecedented capability to secure and track every copy of your most sensitive information - even enabling end user access to be revoked long after the documents have been copied to home computers or burnt to CD/DVDs. But what doesn't it do? The main limitation of Oracle IRM (and IRM products in general) is format and platform support. Oracle IRM supports by far the broadest range of desktop applications and the deepest range of application versions, compared to other IRM vendors. This is important because you don't want to exclude sensitive business processes from being 'sealed' just because either the file format is not supported or users cannot upgrade to the latest version of Microsoft Office or Adobe Reader. But even the Oracle IRM Desktop can only open 'sealed' documents on Windows and does not for example currently support CAD (although this is coming in a future release). IRM products from other vendors are much more restrictive. To address this limitation Oracle has just made available the Oracle IRM Wrapper all-format, any-platform encryption/decryption utility. It uses the same core Oracle IRM web services and classification-based rights model to manually encrypt and decrypt files of any format on any Java-capable operating system. The encryption envelope is the same, and it uses the same role- and classification-based rights as 'sealing', but before you can use 'wrapped' files you must manually decrypt them. Essentially it is old-school manual encryption/decryption using the modern classification-based rights model of Oracle IRM. So if you want to share sensitive CAD documents, ZIP archives, media files, etc. with a partner, and you already have Oracle IRM, it's time to get 'wrapping'! Please note that the Oracle IRM Wrapper is made available as a free sample application (with full source code) and is not formally supported by Oracle. However it is informally supported by its author, Martin Lambert, who also created the widely-used Oracle IRM Hot Folder automated sealing application.

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  • Make Your Coworker’s Day in Ubuntu

    - by Trevor Bekolay
    It can be difficult to express your appreciation for your coworkers in person – what if they take it the wrong way, or think you’re fishing for a compliment of your own? If you use Ubuntu in your office, here’s a quick way to show your appreciation while avoiding the social pitfalls of face-to-face communication. Make sure their computer is locked An unlocked computer is a vulnerable computer. Vulnerable to malware sure, but much more vulnerable to the local office prankster, who thinks it’s hilarious to make a screenshot of your desktop, change your background to that screenshot, then hide all of your desktop icons. These incidents have taught us that you should lock your computer when taking a break. Hopefully your coworker has learned the same lesson, and pressed Ctrl+Alt+L before stepping out for a coffee. Leave a carefully worded message Now is your opportunity to leave your message of appreciation on your coworker’s computer. Click on the Leave Message button and type away! Click on Save. Wait, possibly in the shadows If you sit near your coworker, then wait for them to return. If you sit farther away, then try to listen for their footsteps. Eventually they will return to their computer and enter their password to unlock it. Observe smile Once they return to their desktop, they will be greeted with the message you left. Look to see if they appreciated the message, and if so, feel free to take credit. If they look annoyed, or press the Cancel button, continue on with your day like nothing happened. You may also try to slip into a conversation that you saw Jerry tinkering with their computer earlier. Conclusion Leaving your coworkers a nice message is easy and can brighten up their dull afternoon. We’re pretty sure that this method can only be used for good and not evil, but if you have any other suggestions of messages to leave, let us know in the comments! Similar Articles Productive Geek Tips Make Ubuntu Automatically Save Changes to Your SessionAdding extra Repositories on UbuntuInstall IceWM on Ubuntu LinuxInstall Blackbox on Ubuntu LinuxMake Firefox Display Large Images Full Size TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Optimize your computer the Microsoft way Stormpulse provides slick, real time weather data Geek Parents – Did you try Parental Controls in Windows 7? Change DNS servers on the fly with DNS Jumper Live PDF Searches PDF Files and Ebooks Converting Mp4 to Mp3 Easily

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  • Looking into ASP.Net MVC 4.0 Mobile Development - part 2

    - by nikolaosk
    In this post I will be continuing my discussion on ASP.Net MVC 4.0 mobile development. You can have a look at my first post on the subject here . Make sure you read it and understand it well before you move one reading the remaining of this post. I will not be writing any code in this post. I will try to explain a few concepts related to the MVC 4.0 mobile functionality. In this post I will be looking into the Browser Overriding feature in ASP.Net MVC 4.0. By that I mean that we override the user agent for a given user session. This is very useful feature for people who visit a site through a device and they experience the mobile version of the site, but what they really want is the option to be able to switch to the desktop view. "Why they might want to do that?", you might wonder.Well first of all the users of our ASP.Net MVC 4.0 application will appreciate that they have the option to switch views while some others will think that they will enjoy more the contents of our website with the "desktop view" since the mobile device they view our site has a quite large display.  Obviously this is only one site. These are just different views that are rendered.To put it simply, browser overriding lets our application treat requests as if they were coming from a different browser rather than the one they are actually from. In order to do that programmatically we must have a look at the System.Web.WebPages namespace and the classes in it. Most specifically the class BrowserHelpers. Have a look at the picture below   In this class we see some extension methods for HttpContext class.These methods are called extensions-helpers methods and we use them to switch to one browser from another thus overriding the current/actual browser. These APIs have effect on layout,views and partial views and will not affect any other ASP.Net Request.Browser related functionality.The overridden browser is stored in a cookie. Let me explain what some of these methods do. SetOverriddenBrowser() -  let us set the user agent string to specific value GetOverriddenBrowser() -  let us get the overridden value ClearOverriddenBrowser() -  let us remove any overridden user agent for the current request   To recap, in our ASP.Net MVC 4.0 applications when our application is viewed in our mobile devices, we can have a link like "Desktop View" for all those who desperately want to see the site with in full desktop-browser version.We then can specify a browser type override. My controller class (snippet of code) that is responsible for handling the switching could be something like that. public class SwitchViewController : Controller{ public RedirectResult SwitchView(bool mobile, string returnUrl){if (Request.Browser.IsMobileDevice == mobile)HttpContext.ClearOverriddenBrowser();elseHttpContext.SetOverriddenBrowser(mobile ? BrowserOverride.Mobile : BrowserOverride.Desktop);return Redirect(returnUrl);}} Hope it helps!!!!

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  • Going Metro

    - by Tony Davis
    When it was announced, I confess was somewhat surprised by the striking new "Metro" User Interface for Windows 8, based on Swiss typography, Bauhaus design, tiles, touches and gestures, and the new Windows Runtime (WinRT) API on which Metro apps were to be built. It all seemed to have come out of nowhere, like field mushrooms in the night and seemed quite out-of-character for a company like Microsoft, which has hung on determinedly for over twenty years to its quaint Windowing system. Many were initially puzzled by the lack of support for plug-ins in the "Metro" version of IE10, which ships with Win8, and the apparent demise of Silverlight, Microsoft's previous 'radical new framework'. Win8 signals the end of the road for Silverlight apps in the browser, but then its importance here has been waning for some time, anyway, now that HTML5 has usurped its most compelling use case, streaming video. As Shawn Wildermuth and others have noted, if you're doing enterprise, desktop development with Silverlight then nothing much changes immediately, though it seems clear that ultimately Silverlight will die off in favor of a single WPF/XAML framework that supports those technologies that were pioneered on the phones and tablets. There is a mystery here. Is Silverlight dead, or merely repurposed? The more you look at Metro, the more it seems to resemble Silverlight. A lot of the philosophies underpinning Silverlight applications, such as the fundamentally asynchronous nature of the design, have moved wholesale into Metro, along with most the Microsoft Silverlight dev team. As Simon Cooper points out, "Silverlight developers, already used to all the principles of sandboxing and separation, will have a much easier time writing Metro apps than desktop developers". Metro certainly has given the framework formerly known as Silverlight a new purpose. It has enabled Microsoft to bestow on Windows 8 a new "duality", as both a traditional desktop OS supporting 'legacy' Windows applications, and an OS that supports a new breed of application that can share functionality such as search, that understands, and can react to, the full range of gestures and screen-sizes, and has location-awareness. It's clear that Win8 is developed in the knowledge that the 'desktop computer' will soon be a very large, tilted, touch-screen monitor. Windows owes its new-found versatility to the lessons learned from Windows Phone, but it's developed for the big screen, and with full support for familiar .NET desktop apps as well as the new Metro apps. But the old mouse-driven Windows applications will soon look very passé, just as MSDOS character-mode applications did in the nineties. Cheers, Tony.

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  • Custom session: Window does not capture full screen area by default. 12.04

    - by juzerali
    I am trying to create a custom session by creating a custom.desktop file in /usr/share/xesessions folder. Remember this is not a gnome or some other session. I have created my own application for this session, which are simple. Case 1 Chrome Browser Contents of custom.desktop file [Desktop Entry] Name=Internet Kiosk Comment=This is an internet kiosk Exec=google-chrome --kiosk TryExec= Icon= Type=Application Issue Chrome browser starts in kiosk mode but does not capture complete screen area. Some area is left at the bottom and right side of the screen. Case 2 Custom pyGTK app (Quickly) Contents of custom.desktop file [Desktop Entry] Name=Custom Kiosk Comment=This is a custom kiosk Exec=~/MyCustomPyGTKApp TryExec= Icon= Type=Application Issue My custom pyGTK app has window.fullScreen() in the code. That means it should open in full screen without the window chrome (and it does under the normal session). But that too, leaves lots of space around it. Need Help Can anyone tell me whats going on here. I think its some issue with borders as pointed out at http://www.instructables.com/id/Setting-Up-Ubuntu-as-a-Kiosk-Web-Appliance/?ALLSTEPS in Step 8 If by chance, Google Chromium is not stretched to the edges with the --kiosk switch enabled there is a simple fix. To stretch Chromium simply log in as your regular user and edit chromeKiosk.sh to not have the --kiosk switch. Then log in as the restricted user, click the wrench and choose options. Then on the Personal Stuff tab select Hide system title bar and use compact borders. Close the options screen and stretch Chromium to fit the monitor. Then go back into the options window and set it to Use system title bar and borders. After this is done, log out of your restricted user (might need to just reboot) and log into your regular user. Edit chromeKiosk.sh back to include the --kiosk switch again and Chromium should be full screen next time you log into the restricted user. If I were to use a custom pyGTK or a gtkmm app, how should I get around this issue. window.fullScreen() should occupy the complete screen area. This has to be done programmatically or in some other way that can scale. I have to deploy this on large number of machines located at different geographical areas. Doing it manually on every machine is not possible.

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  • HTG Explains: Should You Build Your Own PC?

    - by Chris Hoffman
    There was a time when every geek seemed to build their own PC. While the masses bought eMachines and Compaqs, geeks built their own more powerful and reliable desktop machines for cheaper. But does this still make sense? Building your own PC still offers as much flexibility in component choice as it ever did, but prebuilt computers are available at extremely competitive prices. Building your own PC will no longer save you money in most cases. The Rise of Laptops It’s impossible to look at the decline of geeks building their own PCs without considering the rise of laptops. There was a time when everyone seemed to use desktops — laptops were more expensive and significantly slower in day-to-day tasks. With the diminishing importance of computing power — nearly every modern computer has more than enough power to surf the web and use typical programs like Microsoft Office without any trouble — and the rise of laptop availability at nearly every price point, most people are buying laptops instead of desktops. And, if you’re buying a laptop, you can’t really build your own. You can’t just buy a laptop case and start plugging components into it — even if you could, you would end up with an extremely bulky device. Ultimately, to consider building your own desktop PC, you have to actually want a desktop PC. Most people are better served by laptops. Benefits to PC Building The two main reasons to build your own PC have been component choice and saving money. Building your own PC allows you to choose all the specific components you want rather than have them chosen for you. You get to choose everything, including the PC’s case and cooling system. Want a huge case with room for a fancy water-cooling system? You probably want to build your own PC. In the past, this often allowed you to save money — you could get better deals by buying the components yourself and combining them, avoiding the PC manufacturer markup. You’d often even end up with better components — you could pick up a more powerful CPU that was easier to overclock and choose more reliable components so you wouldn’t have to put up with an unstable eMachine that crashed every day. PCs you build yourself are also likely more upgradable — a prebuilt PC may have a sealed case and be constructed in such a way to discourage you from tampering with the insides, while swapping components in and out is generally easier with a computer you’ve built on your own. If you want to upgrade your CPU or replace your graphics card, it’s a definite benefit. Downsides to Building Your Own PC It’s important to remember there are downsides to building your own PC, too. For one thing, it’s just more work — sure, if you know what you’re doing, building your own PC isn’t that hard. Even for a geek, researching the best components, price-matching, waiting for them all to arrive, and building the PC just takes longer. Warranty is a more pernicious problem. If you buy a prebuilt PC and it starts malfunctioning, you can contact the computer’s manufacturer and have them deal with it. You don’t need to worry about what’s wrong. If you build your own PC and it starts malfunctioning, you have to diagnose the problem yourself. What’s malfunctioning, the motherboard, CPU, RAM, graphics card, or power supply? Each component has a separate warranty through its manufacturer, so you’ll have to determine which component is malfunctioning before you can send it off for replacement. Should You Still Build Your Own PC? Let’s say you do want a desktop and are willing to consider building your own PC. First, bear in mind that PC manufacturers are buying in bulk and getting a better deal on each component. They also have to pay much less for a Windows license than the $120 or so it would cost you to to buy your own Windows license. This is all going to wipe out the cost savings you’ll see — with everything all told, you’ll probably spend more money building your own average desktop PC than you would picking one up from Amazon or the local electronics store. If you’re an average PC user that uses your desktop for the typical things, there’s no money to be saved from building your own PC. But maybe you’re looking for something higher end. Perhaps you want a high-end gaming PC with the fastest graphics card and CPU available. Perhaps you want to pick out each individual component and choose the exact components for your gaming rig. In this case, building your own PC may be a good option. As you start to look at more expensive, high-end PCs, you may start to see a price gap — but you may not. Let’s say you wanted to blow thousands of dollars on a gaming PC. If you’re looking at spending this kind of money, it would be worth comparing the cost of individual components versus a prebuilt gaming system. Still, the actual prices may surprise you. For example, if you wanted to upgrade Dell’s $2293 Alienware Aurora to include a second NVIDIA GeForce GTX 780 graphics card, you’d pay an additional $600 on Alienware’s website. The same graphics card costs $650 on Amazon or Newegg, so you’d be spending more money building the system yourself. Why? Dell’s Alienware gets bulk discounts you can’t get — and this is Alienware, which was once regarded as selling ridiculously overpriced gaming PCs to people who wouldn’t build their own. Building your own PC still allows you to get the most freedom when choosing and combining components, but this is only valuable to a small niche of gamers and professional users — most people, even average gamers, would be fine going with a prebuilt system. If you’re an average person or even an average gamer, you’ll likely find that it’s cheaper to purchase a prebuilt PC rather than assemble your own. Even at the very high end, components may be more expensive separately than they are in a prebuilt PC. Enthusiasts who want to choose all the individual components for their dream gaming PC and want maximum flexibility may want to build their own PCs. Even then, building your own PC these days is more about flexibility and component choice than it is about saving money. In summary, you probably shouldn’t build your own PC. If you’re an enthusiast, you may want to — but only a small minority of people would actually benefit from building their own systems. Feel free to compare prices, but you may be surprised which is cheaper. Image Credit: Richard Jones on Flickr, elPadawan on Flickr, Richard Jones on Flickr     

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  • Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu

    - by Asian Angel
    Do you have certain folders that you access often each day but are only available through the Places Menu or Nautilus? See how easy it is to create shortcuts for your desktop and taskbar with our quick tutorial. To get started open Nautilus and locate the folders that you want to make new shortcuts for. For our example we chose Ubuntu One. Right click on the chosen folder and select Make Link. Your new shortcut will appear with the text Link to “Folder Name” and an Arrow Shortcut Marker attached. If you are happy with your new shortcut as is, then drag it to your desktop or taskbar as desired. We created the shortcut twice in our example…once for the desktop and once for the taskbar. For our example we decided to customize the taskbar shortcut a bit. To customize your shortcut right click on the shortcut and select Properties. Note: The desktop shortcut is limited on the amount you can customize it (name change and addition of up to four emblems to the folder). From here you can rename the shortcut and change the icon as desired. A quick name change and new icon made a huge improvement in how our taskbar shortcut looked. Note: The link for the icon we used is shown below. A little touch-up to our desktop shortcut and both are looking good. Download the Ubuntu Cloud Icon *Icon is 128*128 pixels and comes in .png format. Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Create Shortcuts for Your Favorite or Most Used Folders in Ubuntu Create Custom Sized Thumbnail Images with Simple Image Resizer [Cross-Platform] Etch a Circuit Board using a Simple Homemade Mixture Sync Blocker Stops iTunes from Automatically Syncing The Journey to the Mystical Forest [Wallpaper] Trace Your Browser’s Roots on the Browser Family Tree [Infographic]

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  • ATI (fglrx) Dual monitor / laptop hot-plugging

    - by Brendan Piater
    I feel like I've gone back 5 years on my desktop today. I'll try not dump to much frustration here... I been running 12.04 since alpha with the ATI open source drivers and the gnome 3 desktop. I been generally very happy with them with only small issues along the way. Now of course it does not support 3D acceleration 100%, so games like my newly purchased Amnesia from the Humble bundle would not play. OK, no worries, the ATI driver is in the repos so let me have a go I thought. With all this testing that's been done with multi-monitor support, what could go wrong...? How I use my computer: It's laptop, with a HD 3670 card in it. I spend about 50% of the time working directly on the laptop (at home) and about 50% of the time working with an additional display connected (at work), multi desktop environment. What happening now: installed drivers things seemed to working, save some small other bugs (not critical) this morning I take my machine and plug the additional monitor into it, and nothing happens... ok fine. open "displays" try configure dual display, won't work open ati config "thing" (cause it is a thing, a crap thing) and set-up monitors there reboot it says (oh ffs, really.... ok) reboot, login and wow, I got a gnome 2 desktop (presume gnome 3 fall back) and no multi-monitor...great. (screenshot: http://ubuntuone.com/5tFe3QNFsTSIGvUSVLsyL7 ) after getting into a situation where I had to Ctrl + Alt + Del to get out of a frozen display, I eventually manage to set-up a single display desktop on the "main" monitor ok.. time to go home... unplug monitor... nothing happens.. oh boy here we go... try displays again, nothing, just hangs the display.. great. crash all the apps and reboot... So it's been a trying day... What I really hope is that someone else has figured out how to avoid this PAIN. Please help with a solution that: allows me run fglrx (so I can run the games I want) allows me to hot-plug a monitor to my laptop and remove it again allows me to change the display so include the hot-plugged monitor (preferable automatically like it did with the open drivers) Next best if that's not possible: switch between laptop only display and monitor only display easily (i.e. not having to reboot/logout/suspened etc) Really appreciate the time of anyone that has a solution. Thanks in advance. Regards Brendan PS: I guess I should file a bug about this too, so some direction as to the best place to file this would be appreciated too.

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  • Ubuntu won't connect to wired network

    - by djeikyb
    I'm running 10.04, upgraded from 9.10, maybe, but probably not upgraded from 9.04. I have two wifi routers. Zeus is connected to the dsl modem. Hermes uses a wds bridge with Zeus to extend the network. My desktop (Daedalus) is ethernetted to Hermes. My laptop (Clyde) is wifi, switching to Hermes or Zeus as needed. Occasionally, as in whenever I transfer a large file from desktop to laptop, the wds bridge will die. Fixing it means restarting both routers, though it seems Hermes should boot first. This is ridiculous, and eventually I'll get around to asking you guys to help me stop it from happening. More importantly is that my desktop requires a reboot to get back on the network. WTF. ifconfig shows my nic has no ip. /etc/init.d/networking restart doesn't do anything, not even give me a lousy ip. dhcpcd eth1 grants me an ip address, but doesn't help with internet access. route -n shows what looks like my normal routing table, but pinging google.com informs me it's an unknown host. jake@daedalus:~$ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 10.1.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 0.0.0.0 10.1.1.1 0.0.0.0 UG 0 0 0 eth1 It may be worth noting that I can ping both Zeus (10.1.1.1) and Hermes (10.1.1.4) and my laptop (10.1.1.55). Much obliged for any help. Rebooting is, well, trivial in this instance. But it's stupid. I switched to linux because I like the idea that if one part breaks, you fix it instead of reboot reboot reboot. I've left my poor desktop in disarray, confining myself to my little netbook. My desktop is broken, awaiting magical commands from you brilliant folk. (and yes, i know clyde the netbook should be named icarus. it was its original name. ironically the ssd burned out, and i felt it wasn't right when it came to reinstalling)

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  • Java+DOM: How do I convert a DOM tree without namespaces to a namespace-aware DOM tree?

    - by java.is.for.desktop
    Hello, everyone! I receive a Document (DOM tree) from a certain API (not in JDK). Sadly, this Document is not namespace-aware. As far as I know DOM, once generated, namespace-awareness can't be "added" afterwards. When converting this Document using a Transformer to a string, the XML is correct. Elements have xmlns:... attributes and name prefixes. But from the DOM point of view, there are no namespaces and no prefixes. I need to be able to convert this Document into a new Document which is namespace-aware. Yes, I could do this by just converting it to a string and back to DOM with namespaces enabled. But: nodes of the original tree have user-objects set. Converting to string and back would make a mapping of these user-objects to the new Document very complicated, if not impossible. So I really need a way to convert non-namespace DOM to namespace DOM. Are there any more-or-less straightforward solutions for this? Worst case (what I'm hoping to avoid) would be to manually iterate through old Document tree and create new namespace-aware Node for each old Node. Doing so, one had to manually "parse" namespace prefixes, watch out for xmlns-attributes, and maintain a mapping between prefixes and namespace-URIs. Lots of things to go wrong.

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  • JavaCC: Please help me understand token ambiguity.

    - by java.is.for.desktop
    Hello, everyone! I had already many problems with understanding, how ambiguous tokens can be handled elegantly (or somehow at all) in JavaCC. Let's take this example: I want to parse XML processing instruction. The format is: "<?" <target> <data> "?>": target is an XML name, data can be anything except ?>, because it's the closing tag. So, lets define this in JavaCC: (I use lexical states, in this case DEFAULT and PROC_INST) TOKEN : <#NAME : (very-long-definition-from-xml-1.1-goes-here) > TOKEN : <WSS : (" " | "\t")+ > // WSS = whitespaces <DEFAULT> TOKEN : {<PI_START : "<?" > : PROC_INST} <PROC_INST> TOKEN : {<PI_TARGET : <NAME> >} <PROC_INST> TOKEN : {<PI_DATA : ~[] >} // accept everything <PROC_INST> TOKEN : {<PI_END : "?>" > : DEFAULT} Now the part which recognizes processing instructions: void PROC_INSTR() : {} { ( <PI_START> (t=<PI_TARGET>){System.out.println("target: " + t.image);} <WSS> (t=<PI_DATA>){System.out.println("data: " + t.image);} <PI_END> ) {} } The problem is (i guess): hence <PI_DATA> recognizes "everything", my definition is wrong. Let's test it with <?mytarget here-goes-some-data?>: The target is recognized: "target: mytarget". But now I get my favorite JavaCC parsing error: !! procinstparser.ParseException: Encountered "" at line 1, column 15. !! Was expecting one of: !! Encountered nothing? Was expecting nothing? Or what? Thank you, JavaCC! I know, that I could use the MORE keyword of JavaCC, but this would give me the whole processing instruction as one token, so I'd had to parse/tokenize it further by myself. Why should I do that? Am I writing a parser that does not parse? What I would need is telling JavaCC to recognize "everything until ?>" as processing instruction data. How can it be done? Thank you.

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  • Swing: what to do when a JTree update takes too long and freezes other GUI elements?

    - by java.is.for.desktop
    Hello, everyone! I know that GUI code in Java Swing must be put inside SwingUtilities.invokeAndWait or SwingUtilities.invokeLater. This way threading works fine. Sadly, in my situation, the GUI update it that thing which takes much longer than background thread(s). More specific: I update a JTree with about just 400 entries, nesting depth is maximum 4, so should be nothing scary, right? But it takes sometimes one second! I need to ensure that the user is able to type in a JTextPane without delays. Well, guess what, the slow JTree updates do cause delays for JTextPane during input. It refreshes only as soon as the tree gets updated. I am using Netbeans and know empirically that a Java app can update lots of information without freezing the rest of the UI. How can it be done? NOTE 1: All those DefaultMutableTreeNodes are prepared outside the invokeAndWait. NOTE 2: When I replace invokeAndWait with invokeLater the tree doesn't get updated. NOTE 3: Fond out that recursive tree expansion takes far the most time. NOTE 4: I'm using custom tree cell renderer, will try without and report. NOTE 4a: My tree cell renderer uses a map to cache and reuse created JTextComponents, depending on tree node (as a key). CLUE 1: Wow! Without setting custom cell renderer it's 10 times faster. I think, I'll need few good tutorials on writing custom tree cell renderers.

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  • JavaCC: Please give me links to "real" examples.

    - by java.is.for.desktop
    Hello, everyone! I know that there are many examples of JavaCC parsers here, but they all do nothing. They just accept a string, or produce parsing errors. What I need is a few examples of real parsers, which actually do something during parsing. (Such as building a DOM tree during parsing an XML string). Please help! ;)

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