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• Integrate Google Maps API into an iPhone app

  - by Corey Floyd

  Update: iPhone SDk 3.0 now addresses the question here, however the NDA prevents any in depth discussion. Log in to the iPhone Dev Center if you need more info. Ok, I have to admit I'm a little lost here. I am fairly comfortable with Cocoa, but am having trouble picking up the bit of javascript needed to solve this problem. I am trying to send a request to Google for a reverse geo code. I have looked over the Google documentation I have viewed here: http://code.google.com/apis/maps/documentation/index.html http://code.google.com/apis/maps/documentation/geocoding/ Even after a rough reading, I am missing a basic concept: How do I talk to google? In some examples, they show a url being sent to google (which seems easy enough), but in others they show javascript. It seems for reverse geocoding, the request might be be harder than sending the url with some parameters (but I hope I am wrong). Can someone point me to the correct way to make a request? (In objective-C, so I can wrap my head around it)

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• [OffTopic] PhD is it worth it?

  - by Zenzen

  So I'll be graduating next year (hopefully) and lately I started thinking about getting a PhD in computer science (to be more precise I was thinking about something related to "distributed systems", don't have any specific topics yet in mind), but is it really worth it? A PhD course here lasts 4 years and is free IF you're doing the "normal one" (which means you have class from monday to friday) OR you have to pay if you want to study on the weekends. So I've been thinking about getting a normal full time job (as a JEE programmer) and doing my PhD during the weekends OR doing the normal PhD course (mon-fri) and getting a part time job as a software dev (the main reason I want a job is simple - I need to eat). That would give me practical working experience and theoretical knowledge+a PhD, but it would also mean working 7days a week from 9 to 5 for 4 years straight (sounds like an overkill). Is it, job wise, really worth getting a PhD? As an employer do you prefer people with PhDs or MScs? This might be kinda important - I'm not from the US or western europe, how are PhDs from other countries (I am graduating one of the best, if not the best, school in my country but it's still a central european country...) seen? Are they useless? I won't hide it - after graduation I am thinking about moving abroad.

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• Geolocation Firefox accurate than iPhone Safari?

  - by johnz

  I just tested Geolocation on Firefox 3.6 and iPhone Safari (os 3.1.3), the result is interesting, firefox is more accurate than safari. any one got idea how to make iPhone Safari result more accurate. this is the code for testing: navigator.geolocation.getCurrentPosition(handler, {enableHighAccuracy: true}); function handler(location) { var message = document.getElementById("message"); message.innerHTML = "<img src='http://maps.google.com/staticmap?sensor=true&center=" + location.coords.latitude + "," + location.coords.longitude + "&size=300x300&maptype=street&zoom=16&key=ABQIAAAAZrVtlT2df2pkfI_RZB_6WBRWTAkRKJS7h1XjKaOTqACHuw1n0BT5cATkkKFnZNGHmrwUw9IilQK0Eg' />"; message.innerHTML+="<p>Longitude: " + location.coords.longitude + "</p>"; message.innerHTML+="<p>Latitude: " + location.coords.latitude + "</p>"; message.innerHTML += "<p>Accuracy: " + location.coords.accuracy + "</p>"; // call the function with my current lat/lon getPlaceFromFlickr(location.coords.latitude, location.coords.longitude, 'output'); } . . test from here

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• Crawler do not create custom crawled properties

  - by user173739

  These days i have faced with very strange problem. I have development environment with MOSS 2007 SP 2 and WS 2008, i have search configured and everything works great. I have started to configuring staging environment (MOSS 2007 SP2 with June CU) and create new farm and new SSP. I have deployed my changes with package (wsp) and manually create site collections, sub webs, pages and so on. When fill crawl finishes, i see in Crawl log that all my pages have been successfully crawled and when i use some test tools to query search, my pages have been found. In crawl log there is few errors like http://mysite/sites/de/pages "The crawler could not communicate with the server. Check that the server is available and that the firewall access is configured correctly..", but all pages in this Page library were indexed. The problem is that i use custom managed properties (mapped to custom crawled properties) in search queries, but crawler didn't create crawled properties for all my new site columns. For example for site column IsAccent the crawler didn't create cralwed property ows_isAccesnt. I'm sure that i have created pages for specific content type and all my crawl categories have checked "Automatically discover new properties when a crawl takes place ". In site settings - Searchable columns i haven't got any column selected as Nocrowl. I tried to export my managed and crawled properties from dev environment to stage evironment but all my managed properties were empty, after that i recreated SSP...the result was the same... I checked specific page with tools like Sharepoint Manager 2007 and U2U Caml Query Builder 2007 that content type is correct, and i can see values of my custom site collumns.... Using U2U Caml Query Builder 2007 agains some Page library in Result tab i can see ows_IsAccent (my site collumn is IsAccent) and others site columns, but i can't find them in Crawled properties. Any idias?

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• Pixel Perfect Collision Detection in HTML5 Canvas

  - by Armin Ronacher

  Hi, I want to check a collision between two Sprites in HTML5 canvas. So for the sake of the discussion, let's assume that both sprites are IMG objects and a collision means that the alpha channel is not 0. Now both of these sprites can have a rotation around the object's center but no other transformation in case this makes this any easier. Now the obvious solution I came up with would be this: calculate the transformation matrix for both figure out a rough estimation of the area where the code should test (like offset of both + calculated extra space for the rotation) for all the pixels in the intersecting rectangle, transform the coordinate and test the image at the calculated position (rounded to nearest neighbor) for the alpha channel. Then abort on first hit. The problem I see with that is that a) there are no matrix classes in JavaScript which means I have to do that in JavaScript which could be quite slow, I have to test for collisions every frame which makes this pretty expensive. Furthermore I have to replicate something I already have to do on drawing (or what canvas does for me, setting up the matrices). I wonder if I'm missing anything here and if there is an easier solution for collision detection.

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• Paperclip and Amazon S3 Issue

  - by Jimmy

  Hey everyone, I have a rails app running on Heroku. I am using paperclip for some simple image uploads for user avatars and some other things, I have S3 set as my backend and everything seems to be working fine except when trying to push to S3 I get the following error: The AWS Access Key Id you provided does not exist in our records. Thinking I mis-pasted my access key and secret key, I tried again, still no luck. Thinking maybe it was just a buggy key I deactivated it and generated a new one. Still no luck. Now for both keys I have used the S3 browser app on OS X and have been able to connect to each and view my current buckets and add/delete buckets. Is there something I should be looking out for? I have my application's S3 and paperclip setup like so development: bucket: (unique name) access_key_id: ENV['S3_KEY'] secret_access_key: ENV['S3_SECRET'] test: bucket: (unique name) access_key_id: ENV['S3_KEY'] secret_access_key: ENV['S3_SECRET'] production: bucket: (unique_name) access_key_id: ENV['S3_KEY'] secret_access_key: ENV['S3_SECRET'] has_attached_file :cover, :styles => { :thumb => "50x50" }, :storage => :s3, :s3_credentials => "#{RAILS_ROOT}/config/s3.yml", :path => ":class/:id/:style/:filename" Note: I just added the (unique name) bits, those aren't actually there--I have also verified bucket names, but I don't even think this is getting that far. I also have my heroku environment vars setup correctly and have them setup on dev

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• cakephp paginate using mysql SQL_CALC_FOUND_ROWS

  - by michael

  I'm trying to make Cakephp paginate take advantage of the SQL_CALC_FOUND_ROWS feature in mysql to return a count of total rows while using LIMIT. Hopefully, this can eliminate the double query of paginateCount(), then paginate(). http://dev.mysql.com/doc/refman/5.0/en/information-functions.html#function_found-rows I've put this in my app_model.php, and it basically works, but it could be done better. Can someone help me figure out how to override paginate/paginateCount so it executes only 1 SQL stmt? /** * Overridden paginateCount method, to using SQL_CALC_FOUND_ROWS */ public function paginateCount($conditions = null, $recursive = 0, $extra = array()) { $options = array_merge(compact('conditions', 'recursive'), $extra); $options['fields'] = "SQL_CALC_FOUND_ROWS `{$this->alias}`.*"; Q: how do you get the SAME limit value used in paginate()? $options['limit'] = 1; // ideally, should return same rows as in paginate() Q: can we somehow get the query results to paginate directly, without the extra query? $cache_results_from_paginateCount = $this->find('all', $options); /* * note: we must run the query to get the count, but it will be cached for multiple paginates, so add comment to query */ $found_rows = $this->query("/* do not cache for {$this->alias} */ SELECT FOUND_ROWS();"); $count = array_shift($found_rows[0][0]); return $count; } /** * Overridden paginate method */ public function paginate($conditions, $fields, $order, $limit, $page = 1, $recursive = null, $extra = array()) { $options = array_merge(compact('conditions', 'fields', 'order', 'limit', 'page', 'recursive'), $extra); Q: can we somehow get $cache_results_for_paginate directly from paginateCount()? return $cache_results_from_paginateCount; // paginate in only 1 SQL stmt return $this->find('all', $options); // ideally, we could skip this call entirely }

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• Virtual Earth (Bing) Pin "moves" when zoom level changes

  - by Ali

  Hi guys, Created a Virtual Earth (Bing) map to show a simple pin at a particular point. Everything works right now - the pin shows up, the title and description pop up on hover. The map is initially fully zoomed into the pin, but the STRANGE problem is that when I zoom out it moves slightly lower on the map. So if I started with the pin pointing somewhere in Toronto, if I zoom out enough the pin ends up i the middle of Lake Ontario! If I pan the map, the pin correctly stays in its proper location. When I zoom back in, it moves slightly up until it's back to its original correct position! I've looked around for a solution for a while, but I can't understand it at all. Please help!! Thanks a lot! import with javascript: http://ecn.dev.virtualearth.net/mapcontrol/mapcontrol.ashx?v=6.2 $(window).ready(function(){ GetMap(); }); map = new VEMap('birdEye'); map.SetCredentials("hash key from Bing website"); map.LoadMap(new VELatLong(43.640144 ,-79.392593), 1 , VEMapStyle.BirdseyeHybrid, false, VEMapMode.Mode2D, true, null); var pin = new VEShape(VEShapeType.Pushpin, new VELatLong(43.640144 ,-79.392593)); pin.SetTitle("Goes to Title of the Pushpin"); pin.SetDescription("Goes as Description."); map.AddShape(pin);

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• image/jpeg returned by groovy/grails is OK on development system, but corrupt on prod system. What c

  - by ?????

  I have a groovy/grails application that needs to serve images It works fine on my dev box, the image is returned properly. Here's the start of the returned JPEG, as seen by od -cx 0000000 377 330 377 340 \0 020 J F I F \0 001 001 001 001 , d8ff e0ff 1000 464a 4649 0100 0101 2c01 but on the production box, there's some garbage in front, and the d8ff e0ff before the 1000 is missing 0000000 ? ** ** ? ** ** ? ** ** ? ** ** \0 020 J F bfef efbd bdbf bfef efbd bdbf 1000 464a 0000020 I F \0 001 001 001 \0 H \0 H \0 \0 ? ** ** ? 4649 0100 0101 4800 4800 0000 bfef efbd It's the exact same code. I just moved the .war over and run it on a different machine. (Isn't Java supposed to be write once, run everywhere?) Any ideas? An "encoding" problem? The code is sent to the response like this: response.contentType = "image/jpeg"; response.outputStream << out;

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• JQuery - Slide Example

  - by gav

  Hi All, I want to perform a simple slide motion on an HTML element. JQuery is already available on the site in question so the next logical step for me was to look at their documentation. JQuery - Slide down When I check out their demo however, it doesn't seem to be functioning. In firebug they have an error; missing ) after argument list wyciwyg://0/http://docs.jquery.com/UI/Effects/Slide Line 18 Whilst the error seems simple, I can't work out how to correct it (On thier site by editing the JS). On my own site using the same example an error is found in the JQuery 1.4.2 script itself; jQuery.easing[specialEasing || defaultEasing] is not a function file:///home/gav/ee-workspaces/web/site/php/jquery-1.4.2.js Line 5854 I don't mean to sound lazy / rude but what's going on? Is the JQuery site and newest release actually broken, I doubt it, what am I doing wrong? I'm a CS grad with no real web dev experience so I'm not used to this method of debugging, where should I start with this? Thanks, Gav

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• Arrrg! MovieClip object refuses to moved in any rational way in as3?

  - by Aaron H.

  I have a MovieClip object, which is exported for actionscript (AS3) in an .swc file. When I place an instance of the clip on the stage without any modifications, it appears in the upper left corner, about half off stage (i.e. only the lower right quadrant of the object is visible). I understand that this is because the clip has a registration point which is not the upper left corner. If you call getBounds() on the movieclip you can get the bounds of the clip (presumably from the "point" that it's aligned on) which looks something like (left: -303, top: -100, right: 303, bottom: 100), you can subtract the left and top values from the clip x and y: clip.x -= bounds.left; clip.y -= bounds.top; This seems to properly align the clip fully on stage with the top left of the clip squarely in the corner of the stage. But! Following that logic doesn't seem to work when aligning it on the center of the stage! clip.x = (stage.stageWidth / 2); etc... This creates the crazy parallel universe where the clip is now down in the lower right corner of the stage. The only clue I have is that looking at: clip.transform.matrix and clip.transform.concatenatedMatrix matrix has a tx value of 748 (half of stage height) ty value of 426 (Half of stage height) concatenatedMatrix has a tx value of 1699.5 and ty value of 967.75 That's also obviously where the movieclip is getting positioned, but why? Where is this additional translation coming from?

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• sIfr (3.436) and IE8 - My h1 and h2 are flickering

  - by André

  I am using sIfr (3.436) for my H1 and H2 tags. In IE8 the text flickers and jumps around alot. See example: http://www.addenergy.no/drilling-production/category352.html I have tried various font-tuning as explained at Wiki.Novemberborn, but can't get a good result. Any help to lead in the right direction is appreciated! The sifr-config.js looks like this (h1/h2 is basically the same): sIFR.fitExactly = true; sIFR.fixWrap = true; sIFR.forceWidth = true; sIFR.replace(fedraSerif, { selector: '#placeholder-top h1', css: '.sIFR-root { background-color: #FFFFFF; color: #000000; }', ratios: [8, (...), 1.26] }); And sifr.css (bottom): @media screen { .sIFR-active #placeholder-top h1 { visibility: hidden; font-family: Verdana; font-size:2.5em; line-height:40px; } .sIFR-active #placeholder-top h2 { visibility: hidden; font-family: Verdana; font-size:2em; line-height:30px; } } My style.css (general for the site has): html, body { font-family: Verdana, Arial, Sans-serif; margin: 0; padding: 0; color: #333; background: #cccccc url('images/background.gif') repeat-y top center; } h1 { font-size: 35px; line-height: 40px; } #placeholder-top h1 { margin: 20px 120px 10px 5px; font-size:2.5em; display:block; line-height: 40px; } h2 { line-height: 30px; color: #009bdb; } #placeholder-top h2 { margin: 0px 120px 20px 5px; font-size:2em; display:block; line-height: 30px; }

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• Wpf ListBox Trigger not working for IsFocused Property.

  - by viky

  I want to style my ListBox and displaying some Border around it, i want to hide this Border when ListBox gets focus, <Trigger Property="IsFocused" Value="True"> <Setter Property="Visibility" TargetName="border" Value="Collapsed"/> </Trigger> Same thing i m using in TextBox also and it is working properly, why this Trigger not working for ListBox? Edit: i am having this Style for my ListBox <ControlTemplate TargetType="{x:Type local:ListBox}"> <Border SnapsToDevicePixels="true" x:Name="Bd" CornerRadius="5" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="1"> <Grid> <local:ScrollViewer Focusable="false" Padding="{TemplateBinding Padding}"> <ItemsPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </local:ScrollViewer> <Border CornerRadius="5" Background="Red" x:Name="border"> <TextBlock VerticalAlignment="Center" FontWeight="Bold" Foreground="White" Text="{TemplateBinding Message}" FontFamily="Courier New" /> </Border> </Grid> </Border> </DockPanel> <ControlTemplate.Triggers> <Trigger Property="IsFocused" Value="True"> <Setter Property="Visibility" TargetName="border" Value="Collapsed"/> </Trigger> <Trigger Property="IsEnabled" Value="false"> <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/> </Trigger> <Trigger Property="IsGrouping" Value="true"> <Setter Property="ScrollViewer.CanContentScroll" Value="false"/> </Trigger> </ControlTemplate.Triggers>

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• Bing maps silverlight control pushpin scaling problems.

  - by Rares Musina

  Baiscally my problem is that i've adapted a piece of code found here http://social.msdn.microsoft.com/Forums/en-US/vemapcontroldev/thread/62e70670-f306-4bb7-8684-549979af91c1 which does exactly what I want it to do, that is scale some pushpin images according to the map's zoom level. The only problem is that I've adapted this code to run with the bing maps silverlight control (not virtual earth like in the original example) and now the images scale correclty, but they are repositioned and only reach the desired position when my zoom level is maximum. Any idea why? Help will be greatly appreciated :) Modified code below: var layer = new MapLayer(); map.AddChild(layer); //Sydney layer.AddChild(new Pin { ImageSource = new BitmapImage(new Uri("pin.png", UriKind.Relative)), MapInstance = map }, new Location(-33.86643, 151.2062), PositionMethod.Center); becomes something like layer.AddChild(new Pin { ImageSource = new BitmapImage(new Uri("pin.png", UriKind.Relative)), MapInstance = map }, new Location(-33.92485, 18.43883), PositionOrigin.BottomCenter); I am assuming it has something to do with a different way in which bing maps anchors its UIelements. Details on that are also very userful. Thank you!

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• drupal using node.save with XMLRPC call to another site. "Access Denied" message

  - by EricP

  I have a piece of code on 1 drupal site to create a node another drupal site in a multi-site setup. It looks like I'm getting the sessionid and logging in just fine, but when trying to create a "page" node, I get "Access denied". Under Services - Settings I have "Key Authentication", "Use keys" is unchecked, and "Use sessid" is checked. Below is my code: <p>Test Page 1</p> <? $url = 'http://drupal2.dev/xmlrpc.php'; ?> <? $conn = xmlrpc($url, 'system.connect'); print_r($conn); ?> <p>--</p> <? $login = xmlrpc($url, 'user.login', $conn['sessid'], 'superuser_name', 'superuser_password'); print_r($login); ?> <p>--</p> <? $data=array('type'=>'page', 'title'=>'Test', 'body'=>'test'); $data_s=serialize($data); $result = xmlrpc($url, 'node.save', $login['sessid'], $data_s); echo $result; //echo $data_s; ?> <? if($error = xmlrpc_error()){ if($error->code > 0){ $error->message = t('Outgoing HTTP request failed because the socket could not be opened.'); } drupal_set_message(t('Operation failed because the remote site gave an error: %message (@code).', array( '%message' => $error->message, '@code' => $error->code ) ) ); } ?> thanks for the help.

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• jQuery / jEditable and jQuery UI Dialog. Re-populating table cell.

  - by solefald

  Hello, this is my first time using JS, so i really have no idea what i am doing. I have a table with data, and using jEditable to allow a user to edit the data and POST it to my php script. When user hits "Save", it opens jQuery UI with the data from php script and it seems to work fine, however, if the user hits Cancel or Esc to close the jQuery UI dialog, they and up back on the page, but the cell they tried to edit is now completely empty. How do i get the cell re-populated? Thank you! $(".editable_textarea").editable("/path/to/my/scrip.php", { indicator : "<img src='/images/indicator.gif'>", type : 'textarea', submitdata: { _method: "post", uri: "<?php echo $this->uri->segment(3); ?>" }, select : false, submit : 'Save', cancel : 'Cancel', tooltip : "Click to edit...", cssclass : "editable", onblur: "cancel", cssclass: "edit_destination", callback: function(value, settings) { $(this).dialog({ autoOpen: true, width: 400, modal: true, position: "center", resizable: false, draggable: false, title: "Pending Changes", buttons: { "Cancel": function() { $(this).dialog("close"); }, "Confirm Changes": function() { document.findSameDestination.submit(); } } }); $('form#findSameDestination').submit(function(){ $(this).dialog('open'); return false; }); $(this).editable("disable"); }, data: function(value, settings) { var retval = value.replace(/<br[\s\/]?>/gi, '\n'); retval = retval.replace(/(<([^>]+)>)/gi, ''); return retval; } });

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• Validation using JAXB and Stax to marshal XML document

  - by bajafresh4life

  I have created an XML schema (foo.xsd) and used xjc to create my binding classes for JAXB. Let's say the root element is "collection" and I am writing N "document" objects, which are complex types. Because I plan to write out large XML files, I am using Stax to write out the "collection" root element, and JAXB to marshal document subtrees using Marshaller.marshal(JAXBElement, XMLEventWriter). This is the approach recommended by jaxb's unofficial user's guide: https://jaxb.dev.java.net/guide/Different_ways_of_marshalling.html#Marshalling_into_a_subtree My question is, how can I validate the XML while it's being marshalled? If I bind a schema to the JAXB marshaller (using Marshaller.setSchema()), I get validation errors because I am only marshalling a subtree (it's complaining that it's not seeing the "collection" root element"). I suppose what I really want to do is bind a schema to the Stax XMLEventWriter or something like that. Any comments on this overall approach would be helpful. Basically I want to be able to use JAXB to marshal and unmarshal large XML documents without running out of memory, so if there's a better way to do this let me know.

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• Spikes in Socket Performance

  - by Harun Prasad

  We are facing random spikes in high throughput transaction processing system using sockets for IPC. Below is the setup used for the run: The client opens and closes new connection for every transaction, and there are 4 exchanges between the server and the client. We have disabled the TIME_WAIT, by setting the socket linger (SO_LINGER) option via getsockopt as we thought that the spikes were caused due to the sockets waiting in TIME_WAIT. There is no processing done for the transaction. Only messages are passed. OS used Centos 5.4 The average round trip time is around 3 milli seconds, but some times the round trip time ranges from 100 milli seconds to couple of seconds. Steps used for Execution and Measurement and output Starting the server $ python sockServerLinger.py /dev/null & Starting the client to post 1 million transactions to the server. And logs the time for a transaction in the client.log file. $ python sockClient.py 1000000 client.log Once the execution finishes the following command will show the execution time greater than 100 milliseconds in the format <line_number>:<execution_time>. $ grep -n "0.[1-9]" client.log | less Below is the example code for Server and Client. Server # File: sockServerLinger.py import socket, traceback,time import struct host = '' port = 9999 l_onoff = 1 l_linger = 0 lingeropt = struct.pack('ii', l_onoff, l_linger) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) s.setsockopt(socket.SOL_SOCKET, socket.SO_LINGER, lingeropt) s.bind((host, port)) s.listen(1) while 1: try: clientsock, clientaddr = s.accept() print "Got connection from", clientsock.getpeername() data = clientsock.recv(1024*1024*10) #print "asdasd",data numsent=clientsock.send(data) data1 = clientsock.recv(1024*1024*10) numsent=clientsock.send(data) ret = 1 while(ret>0): data1 = clientsock.recv(1024*1024*10) ret = len(data) clientsock.close() except KeyboardInterrupt: raise except: print traceback.print_exc() continue Client # File: sockClient.py import socket, traceback,sys import time i = 0 while 1: try: st = time.time() s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) while (s.connect_ex(('127.0.0.1',9999)) != 0): continue numsent=s.send("asd"*1000) response = s.recv(6000) numsent=s.send("asd"*1000) response = s.recv(6000) i+=1 if i == int(sys.argv[1]): break except KeyboardInterrupt: raise except: print "in exec:::::::::::::",traceback.print_exc() continue print time.time() -st

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• How to set the PlayList Index for Mediaplayer(ExpressionMediaPlayer:Mediaplayer)

  - by Subhen

  Hi, I have a Mediaplayer control on my XAML page like below: <CustomMediaElement:CustomMediaPlayer x:Name="custMediaElement" VerticalAlignment="Center" Width="600" Height="300" Visibility="Collapsed" /> Now I am ble to set the playList by using setPlayList() method like below: private void setPlayList() { IEnumerable eLevelData = null; eLevelData = pMainPage.GetDataFromDictonary(pMainPage.strChildFolderID); foreach (RMSMedia folderItems in eLevelData) { string strmediaURL = folderItems.strMediaFileName; if (hasExtension(strmediaURL) == "wmv" || hasExtension(strmediaURL) == "mp4" || hasExtension(strmediaURL) == "mp3" || hasExtension(strmediaURL) == "mpg") { PlaylistItem playListItem = new PlaylistItem(); string thumbSource = folderItems.strAlbumcoverImage; playListItem.MediaSource = new Uri(strmediaURL, UriKind.RelativeOrAbsolute); playListItem.Title = folderItems.strAlbumName; if (!string.IsNullOrEmpty(thumbSource)) playListItem.ThumbSource = new Uri(thumbSource, UriKind.RelativeOrAbsolute); playList.Items.Add(playListItem); } } custMediaElement.Playlist = playList; } Now , I want to change the PlayListIndex of Mediaplayer, when user clicks on a listBox Item , which contains the title of all the songs. When the user clicks on the third song title from the songs Title List the mediaPlayer should play the third song , or if the user cliks on 7th song title, the mediaPlayer should play the 7th song. My motto is to pick up the Selected index from the listbox and assign it to the PlayList Index of mediaPlayer. While I add a watch to playList I am able to see , playList , Items , [0] PlaylistIndex 1 playList , Items , [1] PlaylistIndex 2 But While I am trying to set it from the code , the same property PlaylistIndex seems unavailable. Please help. Thanks, Subhen

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• Android: Creating a Scrollable Layout

  - by MD

  I'm trying to create a "scrollable" layout in Android. Even using developers.android.com, though, I feel a little bit lost at the moment. I'm somewhat new to Java, but not so much that I feel I should be having these issues--being new to Android is the bigger problem right now. The layout I'm trying to create should scroll in a sort of a "grid". I THINK what I'm looking for is the Gallery view, but I'm really lost as to how to implement it at the moment. I want it to "snap" to center the frame, like in the actual Gallery application. Essentially, if I had a photo gallery of 9 pictures, the idea is to scroll between them up/down AND side to side, in a 3x3 manner. Doesn't need to dynamically adjust, or anything like that, I just want a grid I can scroll through. I'm also not asking for anyone to give me explicit code for it--I'm trying to learn, more than anything. But pointing me in the right direction for helpful layout programming resources would be greatly appreciated, and confirming if it's a Gallery view I'm looking for would also be really helpful. EDIT: To clarify, the goal is to have ONE item on screen at a time. If you scroll between one item and the next, the previous one leaves the screen, and the new one snaps into place. So if it were a photo gallery, each spot on the grid would take up the entire screen size, approximately, and would be flung out of the viewable area when you slide across to the next photo, in either direction. (Photos are just an example for illustration purposes)

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• How to fix IE ClearType + jQuery opacity problem in this script?

  - by Justine

  Hello, I'm having a rather common problem (or so it seems, after some googling around...) with IE messing both bold text AND transparent pngs while animating opacity using jQuery. You can view the sample here: http://dev.gentlecode.net/dotme/index-sample.html (only occurs in IE, obviously) I've seen some blog posts saying the fix is to remove the filter attribute but I'm not sure how to apply it to the script I'm using since I got it from a tutorial and am still learning jQuery... The script goes as follows: $('ul.nav').each(function() { var $links = $(this).find('a'), panelIds = $links.map(function() { return this.hash; }).get().join(","), $panels = $(panelIds), $panelWrapper = $panels.filter(':first').parent(), delay = 500; $panels.hide(); $links.click(function() { var $link = $(this), link = (this); if ($link.is('.current')) { return; } $links.removeClass('current'); $link.addClass('current'); $panels.animate({ opacity : 0 }, delay); $panelWrapper.animate({ height: 0 }, delay, function() { var height = $panels.hide().filter(link.hash).show().css('opacity', 1).outerHeight(); $panelWrapper.animate({ height: height }, delay); }); return false; }); var showtab = window.location.hash ? '[hash=' + window.location.hash + ']' : ':first'; $links.filter(showtab).click(); }); I would appreciate if someone could go over it and show me how to fix the opacity issue. Will the filter method also fix the trouble I'm having with transparent pngs having pixelated ugly borders like the bold type as well? Thanks in advance for all help!

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• Detect a white square in a black and white image

  - by gcc

  I saw that question i one web site (cite name like that programm.) then i tried to solve but icannot (not my and myfriend homework ) how can i approach to that one (in program.net no solution there is ) Read black & white image data from standard input, and detect a white square in the image. Output the coordinates of the upper left corner of the square, and the width of the square. In the preliminary work, you can print the output and terminate your program after you detect your first square. If you can't find any square on the image, you will print the string: "NO DETECTION". Input (which represents a 2 by 2 square in the center of a 5 by 4 image): 2 2 5 4 0 0 0 0 0 0 0 255 255 0 0 0 255 255 0 0 0 0 0 0 Output: 3 2 2 Input (more comprehensible format of the image, with the same output): 2 6 4 000 000 000 000 000 000 000 000 255 255 255 000 000 000 000 255 255 000 000 000 000 000 000 000 Output: no detection Input can be: 000 255 255 000 000 000 000 255 255 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 255 255 255 000 000 000 255 255 255 000 000 000 255 255 255 000 000 000 000 000 000 000 If there are two squares detected, we should use the biggest one

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• In Python epoll can I avoid the errno.EWOULDBLOCK, errno.EAGAIN ?

  - by davyzhang

  I wrote a epoll wrapper in python, It works fine but recently I found the performance is not not ideal for large package sending. I look down into the code and found there's actually a LOT of error Traceback (most recent call last): File "/Users/dawn/Documents/workspace/work/dev/server/sandbox/single_point/tcp_epoll.py", line 231, in send_now num_bytes = self.sock.send(self.response) error: [Errno 35] Resource temporarily unavailable and previously silent it as the document said, so my sending function was done this way: def send_now(self): '''send message at once''' st = time.time() times = 0 while self.response != '': try: num_bytes = self.sock.send(self.response) l.info('msg wrote %s %d : %r size %r',self.ip,self.port,self.response[:num_bytes],num_bytes) self.response = self.response[num_bytes:] except socket.error,e: if e[0] in (errno.EWOULDBLOCK,errno.EAGAIN): #here I printed it, but I silent it in normal days #print 'would block, again %r',tb.format_exc() break else: l.warning('%r %r socket error %r',self.ip,self.port,tb.format_exc()) #must break or cause dead loop break except: #other exceptions l.warning('%r %r msg write error %r',self.ip,self.port,tb.format_exc()) break times += 1 et = time.time() I googled it, and says it caused by temporarily network buffer run out So how can I manually and efficiently detect this error instead it goes to exception phase? Because it cause to much time to rasie/handle the exception.

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• Binding WPF menu items to WPF Tab Control Items collection

  - by William

  I have a WPF Menu and a Tab control. I would like the list of menu items to be generated from the collection of TabItems on my tab control. I am binding my tab control to a collection to generate the TabItems. I have a TabItem style that uses a ContentPresenter to display the TabItem text in a TextBlock. When I bind the tab items to my menu the menu items are blank. I assume the menu items are looking for the Header property of the TabItems which I am not using. Is there a workaround for my scenario? Is it possible to bind to the Header property of the tab item, when I do not know the number of tabs in advance? Below is a copy of my xaml declarations. Tab Control and items: <DataTemplate x:Key="ClosableTabItemTemplate"> <DockPanel HorizontalAlignment="Stretch"> <Button Command="{Binding Path=CloseWorkSpaceCommand}" Content="X" Cursor="Hand" DockPanel.Dock="Right" Focusable="False" FontFamily="Courier" FontSize="9" FontWeight="Bold" Margin="10,1,0,0" Padding="0" VerticalContentAlignment="Bottom" Width="16" Height="16" Background="Red" /> <ContentPresenter HorizontalAlignment="Center" Content="{Binding Path=DisplayName}"> <ContentPresenter.Resources> <Style TargetType="{x:Type TextBlock}"/> </ContentPresenter.Resources> </ContentPresenter> </DockPanel> </DataTemplate> <DataTemplate x:Key="WorkspacesTemplate"> <TabControl IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding}" ItemTemplate="{StaticResource ClosableTabItemTemplate}" Margin="10" Background="#4C4C4C"/> </DataTemplate> My Menu <Menu Background="Transparent"> <MenuItem Style="{StaticResource TabMenuButtonStyle}" ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabControl}}, Path=Items}" ItemContainerStyle="{StaticResource TabMenuItem}"> </MenuItem> </Menu>

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• PDFView printWithInfo:autoRotate: fails

  - by Brian Postow

  I'm trying to print a PDFDocument that I am constructing from a series of images. In case it matters, I'm doing all of this from within a Mozilla plugin. I create the PDFDocument, and put it into a PDFView, then I call [printView printWithInfo: [NSPrintInfo sharedPrintInfo] autoRotate: YES]; The print dialog comes up (as a separate window, instead of panel. I assume that that comes from being inside a mozilla window, so I wasn't too worried about it. The dialog shows my document, and I can page through it correctly, and everything looks good. However, when I hit "Print" the dropdown with "Layout" etc becomes empty, and the view under that becomes empty. The window doesn't disappear, and the document doesn't print. Hitting Cancel does exactly the same thing. The only thing I can do then is force-quit Mozillla. I based the program off of PDFKitLinker2 from the apple dev site, and that program works. But I can't see any significant differences between it and my version. Any suggestions on where to look? thanks. EDIT: Yes, I know that this is pretty much an exact duplicate of http://stackoverflow.com/questions/2058501/printing-off-screen-pdfviews but that never got a sufficient answer... (And I didn't notice it until just now...)

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