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  • Panning weirdness on an UserControl

    - by Matías
    Hello, I'm trying to build my own "PictureBox like" control adding some functionalities. For example, I want to be able to pan over a big image by simply clicking and dragging with the mouse. The problem seems to be on my OnMouseMove method. If I use the following code I get the drag speed and precision I want, but of course, when I release the mouse button and try to drag again the image is restored to its original position. using System.Drawing; using System.Windows.Forms; namespace Testing { public partial class ScrollablePictureBox : UserControl { private Image image; private bool centerImage; public Image Image { get { return image; } set { image = value; Invalidate(); } } public bool CenterImage { get { return centerImage; } set { centerImage = value; Invalidate(); } } public ScrollablePictureBox() { InitializeComponent(); SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.OptimizedDoubleBuffer, true); Image = null; AutoScroll = true; AutoScrollMinSize = new Size(0, 0); } private Point clickPosition; private Point scrollPosition; protected override void OnMouseDown(MouseEventArgs e) { base.OnMouseDown(e); clickPosition.X = e.X; clickPosition.Y = e.Y; } protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X = clickPosition.X - e.X; scrollPosition.Y = clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); e.Graphics.FillRectangle(new Pen(BackColor).Brush, 0, 0, e.ClipRectangle.Width, e.ClipRectangle.Height); if (Image == null) return; int centeredX = AutoScrollPosition.X; int centeredY = AutoScrollPosition.Y; if (CenterImage) { //Something not relevant } AutoScrollMinSize = new Size(Image.Width, Image.Height); e.Graphics.DrawImage(Image, new RectangleF(centeredX, centeredY, Image.Width, Image.Height)); } } } But if I modify my OnMouseMove method to look like this: protected override void OnMouseMove(MouseEventArgs e) { base.OnMouseMove(e); if (e.Button == MouseButtons.Left) { scrollPosition.X += clickPosition.X - e.X; scrollPosition.Y += clickPosition.Y - e.Y; AutoScrollPosition = scrollPosition; } } ... you will see that the dragging is not smooth as before, and sometimes behaves weird (like with lag or something). What am I doing wrong? I've also tried removing all "base" calls on a desperate movement to solve this issue, haha, but again, it didn't work. Thanks for your time.

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  • How to work with this turing machine?

    - by Lazer
    This is a screenshot of the applet LogiCell 1.0, link to which I found here. As the bottom left corner shows, this is doing sum 0+1 and the result is 01b (bottom right hand side). I am not able to link what is displayed to what the inputs ans outputs are. For example in this case - seeing the snapshot, how do you determine that the inputs are 0 and 1 and the output is 01?

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  • Sugar SOAP set_entry

    - by Brian
    I am trying to add entries to a Sugar Contacts database with the following SOAP code in PHP. $set_entry_params = array( 'session' => $result_array->id, 'module_name' => 'Contacts', 'name_value_list'=>array( array('name'=>'Name','value'=>'Brian') ) ); $result = $soapClient->__soapCall('set_entry', $set_entry_params); An entry is made in the sugar db, but the name field is left blank and the Role field is labelled: Pre Sugar Roll Out does anyone know what is wrong here?

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  • vertical accordion from horizontal

    - by Sify Juhy
    //# jQuery - Horizontal Accordion //# Version 2.00.00 Alpha 1 //# //# portalZINE(R) - New Media Network //# http://www.portalzine.de //# //# Alexander Graef //# [email protected] //# //# Copyright 2007-2009 (function($) { $.hrzAccordion = { setOnEvent: function(i, container, finalWidth, settings){ $("#"+container+"Handle"+i).bind(settings.eventTrigger,function() { var status = $('[rel='+container+'ContainerSelected]').data('status'); if(status ==1 && settings.eventWaitForAnim === true){ return false; } if( $("#"+container+"Handle"+i).attr("rel") != container+"HandleSelected"){ settings.eventAction; $('[id*='+container+'Handle]').attr("rel",""); $('[id*='+container+'Handle]').attr("class",settings.handleClass); $("#"+container+"Handle"+i).addClass(settings.handleClassSelected); $("."+settings.contentWrapper).css({width: finalWidth+"px" }); switch(settings.closeOpenAnimation) { case 1: if($('[rel='+container+'ContainerSelected]').get(0) ){ $('[rel='+container+'ContainerSelected]').data('status',1); //current_width = $('[rel='+container+'ContainerSelected]').width(); $('[rel='+container+'ContainerSelected]').animate({width: "0px",opacity:"0"}, { queue:true, duration:settings.closeSpeed ,easing:settings.closeEaseAction,complete: function(){ $('[rel='+container+'ContainerSelected]').data('status',0); } ,step: function(now){ width = $(this).width(); //new_width = finalWidth- (finalWidth * (width/current_width)); new_width = finalWidth - width; $('#'+container+'Content'+i).width(Math.ceil(new_width)).css("opacity","1"); }}); }else{ $('[rel='+container+'ContainerSelected]').data('status',1); $('#'+container+'Content'+i).animate({width: finalWidth,opacity:"1"}, { queue:false, duration:settings.closeSpeed ,easing:settings.closeEaseAction,complete: function(){ $('[rel='+container+'ContainerSelected]').data('status',0); }}); } break; case 2: $('[id*='+container+'Content]').css({width: "0px"}); $('#'+container+'Content'+i).animate({width: finalWidth+"px",opacity:"1"}, { queue:false, duration:settings.openSpeed ,easing:settings.openEaseAction, complete: settings.completeAction }); break; } $('[id*='+container+'Content]').attr("rel",""); $("#"+container+"Handle"+i).attr("rel",container+"HandleSelected"); $("#"+container+"Content"+i).attr("rel",container+"ContainerSelected"); } }); } }; $.fn.extend({ hrzAccordionLoop: function(options) { return this.each(function(a){ var container = $(this).attr("id") || $(this).attr("class"); var elementCount = $('#'+container+' > li, .'+container+' > li').size(); var settings = $(this).data('settings'); variable_holder="interval"+container ; var i =0; var loopStatus = "start"; variable_holder = window.setInterval(function(){ $("#"+container+"Handle"+i).trigger(settings.eventTrigger); if(loopStatus =="start"){ i = i + 1; }else{ i = i-1; } if(i==elementCount && loopStatus == "start"){ loopStatus = "end"; i=elementCount-1; } if(i==0 && loopStatus == "end"){ loopStatus = "start"; i=0; } },settings.cycleInterval); }); }, hrzAccordion: function(options) { this.settings = { eventTrigger : "click", containerClass : "container", listItemClass : "listItem", contentContainerClass : "contentContainer", contentWrapper : "contentWrapper", contentInnerWrapper : "contentInnerWrapper", handleClass : "handle", handleClassOver : "handleOver", handleClassSelected : "handleSelected", handlePosition : "right", handlePositionArray : "", // left,left,right,right,right closeEaseAction : "swing", closeSpeed : 500, openEaseAction : "swing", openSpeed : 500, openOnLoad : 2, hashPrefix : "tab", eventAction : function(){ //add your own extra clickAction function here }, completeAction : function(){ //add your own onComplete function here }, closeOpenAnimation : 1,// 1 - open and close at the same time / 2- close all and than open next cycle : false, // not integrated yet, will allow to cycle through tabs by interval cycleInterval : 10000, fixedWidth : "", eventWaitForAnim : true }; if(options){ $.extend(this.settings, options); } var settings = this.settings; return this.each(function(a){ var container = $(this).attr("id") || $(this).attr("class"); $(this).data('settings', settings); $(this).wrap("<div class='"+settings.containerClass+"'></div>"); var elementCount = $('#'+container+' > li, .'+container+' > li').size(); var containerWidth = $("."+settings.containerClass).width(); var handleWidth = $("."+settings.handleClass).css("width"); handleWidth = handleWidth.replace(/px/,""); var finalWidth; var handle; if(settings.fixedWidth){ finalWidth = settings.fixedWidth; }else{ finalWidth = containerWidth-(elementCount*handleWidth)-handleWidth; } $('#'+container+' > li, .'+container+' > li').each(function(i) { $(this).attr('id', container+"ListItem"+i); $(this).attr('class',settings.listItemClass); $(this).html("<div class='"+settings.contentContainerClass+"' id='"+container+"Content"+i+"'>" +"<div class=\""+settings.contentWrapper+"\">" +"<div class=\""+settings.contentInnerWrapper+"\">" +$(this).html() +"</div></div></div>"); if($("div",this).hasClass(settings.handleClass)){ var html = $("div."+settings.handleClass,this).attr("id",""+container+"Handle"+i+"").html(); $("div."+settings.handleClass,this).remove(); handle = "<div class=\""+settings.handleClass+"\" id='"+container+"Handle"+i+"'>"+html+"</div>"; }else{ handle = "<div class=\""+settings.handleClass+"\" id='"+container+"Handle"+i+"'></div>"; } if(settings.handlePositionArray){ splitthis = settings.handlePositionArray.split(","); settings.handlePosition = splitthis[i]; } switch(settings.handlePosition ){ case "left": $(this).prepend( handle ); break; case "right": $(this).append( handle ); break; case "top": $("."+container+"Top").append( handle ); break; case "bottom": $("."+container+"Bottom").append( handle ); break; } $("#"+container+"Handle"+i).bind("mouseover", function(){ $("#"+container+"Handle"+i).addClass(settings.handleClassOver); }); $("#"+container+"Handle"+i).bind("mouseout", function(){ if( $("#"+container+"Handle"+i).attr("rel") != "selected"){ $("#"+container+"Handle"+i).removeClass(settings.handleClassOver); } }); $.hrzAccordion.setOnEvent(i, container, finalWidth, settings); if(i == elementCount-1){ $('#'+container+",."+container).show(); } if(settings.openOnLoad !== false && i == elementCount-1){ var location_hash = location.hash; location_hash = location_hash.replace("#", ""); if(location_hash.search(settings.hashPrefix) != '-1' ){ var tab = 1; location_hash = location_hash.replace(settings.hashPrefix, ""); } if(location_hash && tab ==1){ $("#"+container+"Handle"+(location_hash)).attr("rel",container+"HandleSelected"); $("#"+container+"Content"+(location_hash)).attr("rel",container+"ContainerSelected"); $("#"+container+"Handle"+(location_hash-1)).trigger(settings.eventTrigger); }else{ $("#"+container+"Handle"+(settings.openOnLoad)).attr("rel",container+"HandleSelected"); $("#"+container+"Content"+(settings.openOnLoad)).attr("rel",container+"ContainerSelected"); $("#"+container+"Handle"+(settings.openOnLoad-1)).trigger(settings.eventTrigger); } } }); if(settings.cycle === true){ $(this).hrzAccordionLoop(); } }); } }); })(jQuery); **Given is the code used for the accordion...please check out this Accordion Link. in the link there are four examples of accordions. i want the last accordion i.e example 4 to be vertical ...kindly help me.

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  • NoHostAvailableException With Cassandra & DataStax Java Driver If Large ResultSet

    - by hughj
    The setup: 2-node Cassandra 1.2.6 cluster replicas=2 very large CQL3 table with no secondary index Rowkey is a UUID.randomUUID().toString() read consistency set to ONE Using DataStax java driver 1.0 The request: Attempting to do a table scan by "SELECT some-col from schema.table LIMIT nnn;" The fail: Once I go beyond a certain nnn LIMIT, I start to get NoHostAvailableExceptions from the driver. It reads like this: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /10.181.13.239 ([/10.181.13.239] Unexpected exception triggered)) at com.datastax.driver.core.exceptions.NoHostAvailableException.copy(NoHostAvailableException.java:64) at com.datastax.driver.core.ResultSetFuture.extractCauseFromExecutionException(ResultSetFuture.java:214) at com.datastax.driver.core.ResultSetFuture.getUninterruptibly(ResultSetFuture.java:169) at com.jpmc.es.rtm.storage.impl.EventExtract.main(EventExtract.java:36) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120) Caused by: com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /10.181.13.239 ([/10.181.13.239] Unexpected exception triggered)) at com.datastax.driver.core.RequestHandler.sendRequest(RequestHandler.java:98) at com.datastax.driver.core.RequestHandler$1.run(RequestHandler.java:165) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) Given: This is probably not the most enlightened thing to do to a large table with millions of rows, but this is how I learn what not to do, so I would really appreciate someone who could volunteer how this kind of error can be debugged. For example, when this happens, there are no indications that the nodes in the cluster ever had an issue with the request (there is nothing in the logs on either node that indicate any timeout or failure). Also, I enabled the trace on the driver, which gives you some nice autotrace (ala Oracle) info as long as the query succeeds. But in this case, the driver blows a NoHostAvailableException and no ExecutionInfo is available, so tracing has not provided any benefit in this case. I also find it interesting that this does not seem to be recorded as a timeout (my JMX consoles tell me no timeouts have occurred). So, I am left not understanding WHERE the failure is actually occurring. I am left with the idea that it is the driver that is having a problem, but I don't know how to debug it (and I would really like to). I have read several posts from folks that state that query'g for resultSets 10000 rows is probably not a good idea, and I am willing to accept this, but I would like to understand what is causing the exception and where the exception is happening. FWIW, I also tried bumping the timeout properties in the cassandra.yaml, but this made no difference whatsoever. I welcome any suggestions, anecdotes, insults, or monetary contributions for my registration in the house of moron-developers. Regards!!

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  • Move node in adjacency list

    - by Industrial
    Hi everyone, I am working on an adjacency list with mySQL and can not (atleast by myself) do the thinking needed to make a decent enough query to be able to move a set of nodes (together with eventual children nodes) around. The table has following columns: id name left right Thanks a lot!

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  • Effects of changing a node in a binary tree

    - by eSKay
    Suppose I want to change the orange node in the following tree. So, the only other change I'll need to make is in the left pointer of the green node. The blue node will remain the same. Am I wrong somewhere? Because according to this article (that explains zippers), even the blue node needs to be changed. Similarly, in this picture (recolored) from the same article, why do we change the orange nodes at all (when we change x)?

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  • -moz CSS properties and browser support

    - by twodayslate
    As of right now I believe only Firefox support -moz-border-radius property. I am surprised that twitter uses it. Are any other browsers planning on supporting this or does CSS3 have something like this in the works? edit:// also found -webkit-border-top-left-radius and then the CSS3 version So when is CSS3 coming out?

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  • Div overflow not hidden properly

    - by bbeckford
    Hi guys, I'm working on this site - http://dev.chriscurddesign.co.uk/mayday It works in everything other than IE7 and IE8 in compatibility mode (don't care about IE6), where the vacancies lists on the right aren't hidden correctly by their parent overflow property. I have been pulling my hair out trying to get to the bottom of this, its driving me up the wall, anyone got any ideas whatsoever? Below is an image of the issue, chrome on the left, IE8 compat mode on the right. Cheers, -Ben

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  • Java library for CSS cleanup

    - by ndn
    For a rich text editor that has to handle pasted HTML code from MS Office applications, I'm looking for a Java library that cleans up the content of all "style" attributes in HTML elements, so that only some CSS attributes are left: background-color border color font-family font-weight font-style list-style-type text-align text-decoration vertical-align For creating a well-formed HTML document, I can use JTidy. For HTML element transformations (removing unwanted elements), I can use http://htmlparser.sourceforge.net/ Is there anything comparable for CSS attributes?

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  • how does linear probing handle this?

    - by Weadadada Awda
    • the hash function: h(x) = | 2x + 5 | mod M • a bucket array of capacity N • a set of objects with keys: 12, 44, 13, 88, 23, 94, 11, 39, 20, 16, 5 (to input from left to right) 4.a [5 pts] Write the hash table where M=N=11 and collisions are handled using linear probing. So I got up to here x x x x x 44 88 12 23 13 94 but the next variable should go after the 94 now, (the 11) but does it start from the beggining or what? thx

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  • devexpress gridview's loading panel problem

    - by subash
    i have a div which contains devexpress grid ondeleting a record in the grid it shows a loading panel and the diaplys the updated grid. The problem is that the loading panel appears in the left top corner of the browser and not in the center of the grid where it should be? can any one guide me in that

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  • Silverlight - Image Not Loading from URI at Runtime!?

    - by Sootah
    I've added an image element to my Silverlight app, and while the image pulls right up when in design mode, it doesn't load at all when running the app. Code is: <Image Height="95" HorizontalAlignment="Left" Margin="12,541,0,0" Name="imgBannerAd" Stretch="Fill" VerticalAlignment="Top" Width="828" Source="http://myurl.com/images/theimage.png" /> What's the deal? I'd tried running the file via the local hard drive and localhost, neither has any effect.

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  • Cufon h2 on div hover

    - by SoulieBaby
    Hi all, I have h2 tags inside divs which I need to change colour on div hover, if the cufon is turned off, the h2 tag changes colour fine, but when cufon is turned on, it doesn't change colour. Here's my code: Cufon Cufon.set('fontFamily', 'DIN'); Cufon.replace('.listing_04 li a .bx1 .right .head_bx h2', { hover: true, hoverables: { a: true, div: true } }); CSS .listing_04 li a .bx1 .right .head_bx h2 { color: #e91397; font-size: 16px; padding: 0px; margin: 0px; } .listing_04 li a:hover .bx1 .right .head_bx h2 { color: #ffff00; } Code <div class="listing_04"> <ul> <li> <a href="#"> <div class="bx1"> <div class="left"> <img src="images/friends_only.jpg" alt="" border="0" class="img_border01" /> <div class="staring_bx"> <img src="images/star1.png" border="0" /> <img src="images/star1.png" border="0" /> <img src="images/star1.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /></div> </div> <div class="right"> <div class="head_bx"> <h2><strong>The Party Girls</strong></h2> My Favourites</div> <p> By : <b>Modi</b><br /> 19 Jan 2010 @ 20:20<br /> Views : <strong>1542484</strong><br /> Comments : <strong>84 </strong></p> </div> <div class="clear"></div> </div> </a> </li> <li> <a href="#"> <div class="bx1"> <div class="left"> <img src="images/img_07.jpg" alt="" border="0" class="img_border01" /> <div class="staring_bx"> <img src="images/star1.png" border="0" /> <img src="images/star1.png" border="0" /> <img src="images/star1.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /></div> </div> <div class="right"> <div class="head_bx"> <h2><strong>The Party Girls</strong></h2> My Favourites</div> <p> By : <b>Modi</b><br /> 19 Jan 2010 @ 20:20<br /> Views : <strong>1542484</strong><br /> Comments : <strong>84 </strong></p> </div> <div class="clear"></div> </div> </a> </li> <li> <a href="#"> <div class="bx1"> <div class="left"> <img src="images/resticted_image.jpg" alt="" border="0" class="img_border01" /> <div class="staring_bx"> <img src="images/star1.png" border="0" /> <img src="images/star1.png" border="0" /> <img src="images/star1.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /> <img src="images/star2.png" width="16" height="15" border="0" /></div> </div> <div class="right"> <div class="head_bx"> <h2><strong>The Party Girls</strong></h2> My Favourites</div> <p> By : <b>Modi</b><br /> 19 Jan 2010 @ 20:20<br /> Views : <strong>1542484</strong><br /> Comments : <strong>84 </strong></p> </div> <div class="clear"></div> </div> </a> </li> </ul> <div class="clear"></div> </div> Example URL: http://dev.splished.360southclients.com/test.php In this test I've disabled cufon for you to see that the h2 colour change works when you hover over the .bx1 div, click "turn cufon on" to see it with the cufon.

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  • In MySQL, what is the most effective query design for joining large tables with many to many relatio

    - by lighthouse65
    In our application, we collect data on automotive engine performance -- basically source data on engine performance based on the engine type, the vehicle running it and the engine design. Currently, the basis for new row inserts is an engine on-off period; we monitor performance variables based on a change in engine state from active to inactive and vice versa. The related engineState table looks like this: +---------+-----------+---------------+---------------------+---------------------+-----------------+ | vehicle | engine | engine_state | state_start_time | state_end_time | engine_variable | +---------+-----------+---------------+---------------------+---------------------+-----------------+ | 080025 | E01 | active | 2008-01-24 16:19:15 | 2008-01-24 16:24:45 | 720 | | 080028 | E02 | inactive | 2008-01-24 16:19:25 | 2008-01-24 16:22:17 | 304 | +---------+-----------+---------------+---------------------+---------------------+-----------------+ For a specific analysis, we would like to analyze table content based on a row granularity of minutes, rather than the current basis of active / inactive engine state. For this, we are thinking of creating a simple productionMinute table with a row for each minute in the period we are analyzing and joining the productionMinute and engineEvent tables on the date-time columns in each table. So if our period of analysis is from 2009-12-01 to 2010-02-28, we would create a new table with 129,600 rows, one for each minute of each day for that three-month period. The first few rows of the productionMinute table: +---------------------+ | production_minute | +---------------------+ | 2009-12-01 00:00 | | 2009-12-01 00:01 | | 2009-12-01 00:02 | | 2009-12-01 00:03 | +---------------------+ The join between the tables would be engineState AS es LEFT JOIN productionMinute AS pm ON es.state_start_time <= pm.production_minute AND pm.production_minute <= es.event_end_time. This join, however, brings up multiple environmental issues: The engineState table has 5 million rows and the productionMinute table has 130,000 rows When an engineState row spans more than one minute (i.e. the difference between es.state_start_time and es.state_end_time is greater than one minute), as is the case in the example above, there are multiple productionMinute table rows that join to a single engineState table row When there is more than one engine in operation during any given minute, also as per the example above, multiple engineState table rows join to a single productionMinute row In testing our logic and using only a small table extract (one day rather than 3 months, for the productionMinute table) the query takes over an hour to generate. In researching this item in order to improve performance so that it would be feasible to query three months of data, our thoughts were to create a temporary table from the engineEvent one, eliminating any table data that is not critical for the analysis, and joining the temporary table to the productionMinute table. We are also planning on experimenting with different joins -- specifically an inner join -- to see if that would improve performance. What is the best query design for joining tables with the many:many relationship between the join predicates as outlined above? What is the best join type (left / right, inner)?

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  • C# Begin/EndReceive - how do I read large data?

    - by ryeguy
    When reading data in chunks of say, 1024, how do I continue to read from a socket that receives a message bigger than 1024 bytes until there is no data left? Should I just use BeginReceive to read a packet's length prefix only, and then once that is retrieved, use Receive() (in the async thread) to read the rest of the packet? Or is there another way? edit: I thought Jon Skeet's link had the solution, but there is a bit of a speedbump with that code. The code I used is: public class StateObject { public Socket workSocket = null; public const int BUFFER_SIZE = 1024; public byte[] buffer = new byte[BUFFER_SIZE]; public StringBuilder sb = new StringBuilder(); } public static void Read_Callback(IAsyncResult ar) { StateObject so = (StateObject) ar.AsyncState; Socket s = so.workSocket; int read = s.EndReceive(ar); if (read > 0) { so.sb.Append(Encoding.ASCII.GetString(so.buffer, 0, read)); if (read == StateObject.BUFFER_SIZE) { s.BeginReceive(so.buffer, 0, StateObject.BUFFER_SIZE, 0, new AyncCallback(Async_Send_Receive.Read_Callback), so); return; } } if (so.sb.Length > 0) { //All of the data has been read, so displays it to the console string strContent; strContent = so.sb.ToString(); Console.WriteLine(String.Format("Read {0} byte from socket" + "data = {1} ", strContent.Length, strContent)); } s.Close(); } Now this corrected works fine most of the time, but it fails when the packet's size is a multiple of the buffer. The reason for this is if the buffer gets filled on a read it is assumed there is more data; but the same problem happens as before. A 2 byte buffer, for exmaple, gets filled twice on a 4 byte packet, and assumes there is more data. It then blocks because there is nothing left to read. The problem is that the receive function doesn't know when the end of the packet is. This got me thinking to two possible solutions: I could either have an end-of-packet delimiter or I could read the packet header to find the length and then receive exactly that amount (as I originally suggested). There's problems with each of these, though. I don't like the idea of using a delimiter, as a user could somehow work that into a packet in an input string from the app and screw it up. It also just seems kinda sloppy to me. The length header sounds ok, but I'm planning on using protocol buffers - I don't know the format of the data. Is there a length header? How many bytes is it? Would this be something I implement myself? Etc.. What should I do?

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  • Horizontal scrolling site

    - by Jon Drew
    Hi I have a horizontal scrolling site that uses jquery to reverse the mouse axis on the scroll wheel on the mouse. This works fine on every browser apart from safari. The address of the page with the scrolling is here: http://www.jamesbells.com/index.php?page=alias Can anyone help - all I need is for the mouse wheel to scroll left and right when moved up and down. Cheers Jon

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  • tinymce un-justify toolbar

    - by deostroll
    Hi, I am loading my tinyMCE inside my jquery document ready function. It is loaded in advanced mode, and I am also setting my toolbar to appear aligned 'left'. However this is still not appearing the way I imagine it should. What could be the problem?

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  • Zend Form not in place labbels values, how to move them that they will be exactly above text box?

    - by Yosef
    Hi, I have esthetic's problem. Zend Form not in place label value, how to move them that they will be exactly above text box, and not from left? (I didn't put filters and validation to make this code simpler here) Thanks, Yosef My Code Login.php form: public function init() { $username = new Zend_Form_Element_Text('username'); $username->setLabel("username"); $password = new Zend_Form_Element_Password('password'); $password->setLabel('password'); $this->addElements(array($username, $password)); }

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  • Adding UIView animation mysteriously changes starting frame

    - by clozach
    I'm working on an app that shows a thumbnail of a photo taken by the user. In order to show a seemless transition from the full-screen image shown in the UIImagePickerController to the thumbnail, I set the frame on my copy of the image to [[UIScreen mainScreen] bounds] and then change the frame to match the frame of an invisible button. (The button allows users to re-take their photo by tapping the thumbnail image.) The trouble is that the starting x-origin of my UIImageView (imageView) is mysteriously starting nearly offscreen to the left: As you can see from the alert, the imageView purports to be located at (0,0), yet it's displaying at something like (-255,0). Here's the code: CGRect frame = [[UIScreen mainScreen] bounds]; imageView.frame = frame; [[[[UIAlertView alloc] initWithTitle:@"Yo!" message:[NSString stringWithFormat:@"starting frame:%@",NSStringFromCGRect(imageView.frame)] delegate:nil cancelButtonTitle:@"K." otherButtonTitles:nil] autorelease] show]; // Slide the enlarged image seamlessly "onto" the photo button [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:1000]; [UIView setAnimationDelay:.5]; imageView.frame = pictureButton.frame; [UIView commitAnimations]; As if to taunt me, the image actually does go full screen if I comment out the animation code: CGRect frame = [[UIScreen mainScreen] bounds]; imageView.frame = frame; [[[[UIAlertView alloc] initWithTitle:@"Yo!" message:[NSString stringWithFormat:@"starting frame:%@",NSStringFromCGRect(imageView.frame)] delegate:nil cancelButtonTitle:@"K." otherButtonTitles:nil] autorelease] show]; // Slide the enlarged image seamlessly "onto" the photo button // [UIView beginAnimations:nil context:nil]; // [UIView setAnimationDuration:1000]; // [UIView setAnimationDelay:.5]; // // imageView.frame = pictureButton.frame; // // [UIView commitAnimations]; (Note: animationDuration will of course be set to something more like .5 in production, not 1000 seconds.) Update — Other weirdness worth mentioning in case it's relevant: It turns out the offset changes depending on the orientation of the camera when the photo was taken. If I take the picture with the phone upside-down, for instance, then the image gets offset vertically as well as horizontally. The picker seems to be filling the image's imageOrientation incorrectly: I have to hold the phone sideways, Home button on the left, to get an image with UIImageOrientationUp. At one point I experimented with setting imageView.clipsToBounds = YES;, which revealed that my image view's frame is in fact correct. Rather, it's the UIImage's placement within the UIImageView that gets offset. Fwiw, the image view's contentMode is the default, UIViewContentModeScaleToFill.

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  • jquery css menu not selecting the active link

    - by Ronedog
    What is wrong with this and how could I fix it. I have css menu (horizontal) that I want the background and font to be changed when one of the items is selected. I found another post that gave me some jquery code to help make it work, and I thought I had it coded right, but when I click on an item to change its class it adds the class, but the background and font stay the same? Any ideas here? Heres the HTML <ul id="menu_nav" class="buttons"> <li> <a href="#" onclick="' . $menu_path . '">Item 1</a> </li> <li> <a href="#" onclick="' . $menu_path . '">Item 2</a> </li> <li> <a href="#" onclick="' . $menu_path . '">Item 3</a> </li> </ul> Heres the CSS: ul#menu_nav { float:left; width:790px; padding:0; margin:0; list-style-type:none; background-color:#000099; } ul#menu_nav a { float:left; text-decoration:none; color:white; background-color:#000099; padding:0.2em 0.6em; border-right:1px solid #CCCCCC; font-family: Tahoma; font-size: 11px; font-style: normal; font-weight: bold; position: relative; height: 21px; line-height:1.85em; } ul#menu_nav a:hover { background-color:#F1F4FE; color:#000099; border-top:1px solid #CCCCCC; } ul#menu_nav li {display:inline;} .selected { background-color:#F1F4FE; color:#000099; border-top:1px solid #CCCCCC; } Here's the Jquery: $(function(){ $(".buttons li>a").click(function(){ $(this).parent().addClass('selected'). // <li> siblings().removeClass('selected'); }); });

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  • Can't override a global WPF style that is set by TargetType on a single specific control

    - by Matt H.
    I have a style applied to all my textboxes, defined in a resource dictionary.. <Style TargetType="TextBlock"> <Setter Property="TextBlock.FontSize" Value="{Binding Source={StaticResource ApplicationUserSettings}, Path=fontSize, Mode=OneWay}" /> <Setter Property="TextBlock.TextWrapping" Value="Wrap" /> <Setter Property="TextBlock.VerticalAlignment" Value="Center"/> <Setter Property="Background" Value="Transparent"/> <Setter Property="TextBox.FontFamily" Value="{Binding Source={StaticResource ApplicationUserSettings}, Path=fontName, Mode=OneWay}"/> </Style>\ The fontsize and fontstyle properties are bound to a special user settings class that implements iNotifyPropertyChanged, which allows changes to font size and fontfamily to immediately propogate throughout my application. However, in a UserControl I've created (Ironically, the screen that allows the user to customize their font settings), I want the font size and fontfamily to remain static. No matter what I try, my global font settings override what I set in my user control: <UserControl x:Class="ctlUserSettings" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:R2D2" Height="400" Width="600"> <Grid> <Grid.Resources> <Style x:Key="tbxStyle" TargetType="TextBox"> <Style.Setters> <Setter Property="FontSize" Value="14"/> <Setter Property="FontFamily" Value="Tahoma"/> </Style.Setters> </Style> ... etc... <StackPanel Margin="139,122.943,41,0" Orientation="Horizontal" Height="33" VerticalAlignment="Top"> <TextBox Style="{x:Null}" FontSize="13" FontFamily="Tahoma" HorizontalAlignment="Left" MaxWidth="500" MinWidth="350" Name="txtReaderPath" Height="Auto" VerticalAlignment="Top" /> <TextBox Style="{x:tbxStyle}" Margin="15,0,0,0" HorizontalAlignment="Left" Name="txtPath" Width="43" Height="23" VerticalAlignment="Top">(some text)</Button> </StackPanel> I've tried setting Style to {x:Null}, setting custom font sizes inline, and setting a style in the resources of this control. None take precedence over the styles in my resource dictionary. As you can see, I show a sprinkling of all the things I've tried in the XAML sample above... What am I missing?

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