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• Using jquery scrollTop to position absolute Div

  - by Tim

  Hello, I am trying to position an Absolute DIV using Jquery, depending on where the user is clicking on the page. At the moment this works just great $('#window').css('left', jsEvent.pageX); $('#window').css('top', jsEvent.pageY); This positions the element exactly where my mouse has clicked the screen... Until you scroll down that is. That is why I am trying to achieve something that will take the amount of pixels from the top of the page into account. I thought something like this... $('#window').css('top', jsEvent.pageY + scrollTop()); would do the trick, unfortunately it doesn't work. Any hints? Thanks, Tim

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• Updating GUI axes in MATLAB

  - by James

  HI, I am making a GUI for a program I have created, where I need to be able to change the position of a load along a beam. I have set up the axes and the slider properly, but I am unsure how to get the axes to update, as I can't find any examples that show how to do this on the internet. At present, as I move the load, the position updates properly, but the old position stays on screen as well, which is quite annoying. Can anyone recommend any good examples that show how to do this, or does anyone have a suggestion of how to go about refreshing the axes? Regards, James

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• Using a Loader for a string of QML

  - by Robbert

  In Qt 5.3 I've been using the Loader QML element for loading screens. Now I'm trying to load a string of QML dynamically. Qt.createQmlObject enables me to do so, but I can't seem to get the Loader element to play along. Seems like Loader only takes a URL (QUrl) or component (QQmlComponent), but Qt.createQmlObject creates an object (QObject). I'm new to QML, but from my understanding components are reusable elements, similar to classes, and objects are the instances of those classes. I thus can't seem to wrap my head around why Loader wouldn't work with objects. How can I show a loading screen while (asynchronously) parsing and initializing a string of QML? Example QML code: Item { Rectangle {id: content} Loader {id: loader} Component.onCompleted: { var obj = Qt.createQmlObject('import QtQuick 2.3; Rectangle {}', content); loader.source = obj; // Throws error. } }

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• ASP MVC View Content as JSON

  - by Craig

  I have a MVC app with quite a few Controller Actions that are called using Ajax (jQuery) and return partial views content which updates a part of the screen. But what I would rather do is return JSON something like this. return Json(new { Result = true, Message = "Item has been saved", Content = View("Partial") }); Where the HTML is just a property of the Json. What this means is I need to retrieve the HTML that is rendered by the View method. Is there any easy way to do this, a few examples I have seen are quite convoluted. Edit: This question was originally for ASP.NET MVC 1, but if version 2 makes it easier I would like to hear the answer.

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• Rails: blank page - no errors or stack trace

  - by Nathan Long

  I've been trying to fix a bug in the Rails app I'm developing, and I keep getting a blank screen with no errors. I haven't found anything helpful in development.log, either (though it does show queries being run and such). Finally, I started to wonder if it's somehow set not to show errors anymore. I tried commenting out a necessary route, and sure enough, I got a blank page instead of the error and stack trace I expected. What might cause this? (I wondered if maybe I'm accidentally running production mode and errors aren't supposed to show then, but development.log is being appended, and if I open script/console and echo ENV['RAILS_ENV'], it says development.)

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• iPad UIColor Saturation Issues

  - by Carter Allen

  I am trying to draw a UIColor on the screen of a view-based app, and I am trying to do so using HSB. It is absolutely necessary for me to use HSB in this case. I can create a UIColor object with any S value from 0.0f to 0.75f, but past that the numerical changes have no effect on the actual saturation displayed. I need it to be 1.0f, but it is still using 0.75f. Any ideas on why it is doing that, and how I can make it work?

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• iPhone image distortion

  - by Corey Floyd

  Are there any reasons why the simulator will display UIImageViews properly, but incorrectly on the iPhone? My Process: An image in a PNG file Start a UIGraphicsBeginImageContext() Draw the PNG in a CGrect Draw text in the CGRect Create an UIImage from the context Set the image of a UIImaveView to the UIImage Set the frame of the UIImageView to the size of the PNG Add as a subview Outcome: The image does not display correctly. The rightmost 1-3 pixels of the image is just a vertical white line. This occurs only on the device and not on the simulator. I can fix the problem, but only by increasing the size of the UIImageView. If I increase the size.height of the UIImageView by 1 pixel, it displays the UIImage correctly. Of course, these leaves the iPhone to scale my image before drawing it on screen which is not desirable. Any ideas why this occurs or any fixes for it? (I will post my code if needed)

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• How to detect a Triangle gesture with kinect?

  - by Akhilesh Mishra

  I am trying to implement a gesture recognition system which interprets the geometric gestures user makes and draws it on screen, I have some idea of how circle can be recognized, however i have no clue how to get started with triangle recognition. the data I have is X and Y coordinates of all points the gesture passed through. I get this data by tracking right hand. I found something online called Hough Transform , which is used for detecting lines but i am not sure whether it will work for discrete collection of points, Any ideas folks?

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• Using a FormattedText object, how do I find out how much of my text was actually displayed?

  - by Robert

  If I have code like this: FormattedText text = new FormattedText(sTheBook, System.Globalization.CultureInfo.CurrentUICulture, System.Windows.FlowDirection.LeftToRight, new Typeface("Times New Roman"), 13, Brushes.Black); text.MaxTextWidth = 300; text.MaxTextHeight = 600; text.TextAlignment = TextAlignment.Justify; dc.DrawText(text, new Point(10, 0)); ...then, if it is long, only some of the text that I passed in (via sTheBook) will be displayed on the screen. I need to know how much was displayed so I can display the rest later! I can easily measure an amount of text, but it seems silly to do a search by rendering and re-rendering my text over and over until I find the piece that fits exactly. Thanks!

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• Tips on creating a "build a bracelet" app

  - by Felipe Caldas

  I have an idea for an app/game which is basically a build your own bracelet. I will give to the user, say, 5 different types of beads, and the user and drag those beads into a line that is previously drawn in the screen and create his/her bracelet. I am now thinking on the best way to approach this. Would be using the android's OpenGL libraries (and therefore, creating the beads and loading its textures) the best and easiest way? Ultimately, I would like to push new beads into the application whenever I have a new bead texture. Thanks, Felipe

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• Cocos2D, UIScrollView, and initial placement of a scene

  - by diatrevolo

  Hello: I am using a UIScrollView to forward touches to Cocos2D as outlined in http://getsetgames.com/2009/08/21/cocos2d-and-uiscrollview/ Everything works great after a few days of working with it, except one thing: when the initial view appears on the screen, the background appears to be scrolled to the center. As soon as I try to scroll around, the image jumps to 0,0, and everything works as normal, except the touches are offset by half the width and height of the background image. Am I overlooking something basic? I can't think of a useful portion of the code that illustrates the issue, as I can't track it down, but would be happy to post code if anyone has any ideas. Thanks in advance, -Roberto

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• Location of New Window after old window closed

  - by John Brayton

  I have an app that allows multiple windows. I have a strange bug where, if I repeatedly open and close windows, new windows are positioned lower and lower on the screen. I would expect this if I were keeping the windows open, but it seems that the OS X window tiling mechanism is unaware of when my windows are closing. Potentially relevant notes: I am using garbage collection. This is not a document-based app. When I close a window, the corresponding menu item is removed from the "Window" menu. Any hints as to what I might be doing wrong would be appreciated. Thanks!

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• Why modules link is not coming on Administrator Main page?

  - by Nitz

  I have added two modules in my drupal site called.... 1. me alias 2. Mime mail Whenever we add new modules to our site, it has links on admin page. but after activating modules, i can't see the links on admin page. but this happens only on server but on my localhost i can see the modules links on admin page. i have put screenshot of the problem, in image you can see that, i have activated both modules but on admin page....i can't see its links. why is not activated. i have tried to clear all the cache and then try again but its not coming then also. Here is the screen shot

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• Flex/AIR/HTML PDF scriptable viewer

  - by Lizzan

  Hi all! I've written a PowerPoint-like application in Flash, and now our client would like to view the speaker notes (a PDF file) on a separate screen while using the application. What I would need is a separate application/html page which can show the PDF and programmatically change page when the master slide changes. Is this possible? If so, is it easiest to go with a html page + javascript or a Flex/AIR app? It needs to be done without changing the PDF's, since there are 600+ files that need to be viewable.

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• codeigniter site, swfobject not fully loading swf

  - by Joe

  I am having a strange problem. I have a view that is supposed to load a swf. The swf was compiled with Flex and the mxml preloader displays but it loads a blank screen. When I path directly to the file it loads fully and works fine. Other possibly relevant information: The swf makes calls through GET requests to the database the site is built with codeigniter I'm using swfobject to load the swf you can see it in all it's busted glory here: http://thetoad.flattoads.com:16080/~iopdev/CI/index.php?c=moodtotem&m=index I'm going bonkers over this!

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• Suggestions for debugging print stylesheets?

  - by Jim Puls

  I've recently been working on a print stylesheet for a website, and I realized that I was at a loss for effective ways to tweak it. It's one thing to have a reload cycle for working on the on-screen layout: change code command-tab reload but that whole process gets much more arduous when you're trying to print: change code command-tab reload print squint at print-preview image open PDF in Preview for further inspection Are there tools I'm missing out on here? Does WebKit's inspector have a "pretend this is paged media" checkbox? Is there some magic that Firebug (shudder) can do?

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• Rapidly prototype GUI's...

  - by Donovan

  G'Day, I am looking to prototype a windows based GUI. Ideally I would like: Be able create new GUI's and change existing ones quickly The resulting "thing" to be self contained Have the ability to include limited data where necessary ie. When showing a grid including the headers and perhaps a few rows of data for the grid. Allow clickable hotspots that either allow a new screen to be shown or perhaps an explanation hint. I have been using Visio 2003 for this kind of thing and then producing a PDF. However it has some disadvantages: Including data for grids is not possible You cannot include hotspots to allow changing of tabs within the workbook. eg Click on a button and it opens a different tab. If possible a free / open source application would be preferable but a low priced commercial application would also be good. All pointers and suggestions greatly appreciated.Rapid

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• Prefilling large volumes of body text in GMAIL compose getting a Request URI too long error

  - by Ali

  Hi guys this is a followup from the question: http://stackoverflow.com/questions/2583928/prefilling-gmail-compose-screen-with-html-text Where I was building a google apps application - I can call a gmail compose message page from my application using the url: https://mail.google.com/a/domain/?view=cm&fs=1&tf=1&source=mailto&to=WHOEVER%40COMPANY.COM&su=SUBJECTHERE&cc=WHOEVER%40COMPANY.COM&bcc=WHOEVER%40COMPANY.COM&body=PREPOPULATEDBODY However when I try to pass in the body parameter a very long line of text eg as a reply message body I get this error from GMAIL stating the REQUEST URI is too long. Is there a better way to do this as in a way to fillin the text body box of gmail compose section. Or some way to open the page and have it prefilled with javascript some how...

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• How to store user preferences? Cookie becomes bigger..

  - by ari

  My application (Asp.Net MVC) has great interaction with the user interface (jQuery/js). For example, setting various searches charts, moving the gadgets on the screen and more .. I of course want to keep all data for each user. So that data will be available from any page in the Dumaine and the user will accepts his preferences. Now I keep all data in a cookie because it did not seem logical asynchronous access to the server each time the user changes something and thet happens a lot.When the user logout from the application I save the cookie to the database. The problem is the cookie becomes very large. The thought that this huge cookie is attached to each server request makes me feel that my attitude is wrong. Another problem cookies have size limit. It varies from your browser but I definitely have been close to the border - my cookie easily become 4kb Is there another solution?

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• How do I display exception errors thrown by Zend framework

  - by Ali

  Hi guys I'm working with Zend framework and just hate the fact that I seem to encounter hundreds of exception errors like if I try to reference a non existant property of an object my application just dies and crashes. However I have no idea where to see these errors or how to be able to display them on screen. I've set display errors to true and error reporting to E_ALL but when an error is thrown all I see is a blank page rendered only until a bit before where the error apparently occurred or the exception was thrown. Help please my debugging hours are dragging

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• OpenGL on the iPad

  - by Joe Cannatti

  I have an OpenGL project that is a universal project for iPhone/iPad. Basically it is just rendering simple models to the screen. It works great with no OpenGL errors on the iPhone device and iPad simulator. On the iPad device however, i get an OpenGL error and nothing renders. 1282 GL_INVALID_OPERATION immediately after calling [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:layer]; I can't seem to come up with any reason for this. Any help?

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• How does the Licenses.licx based .Net component licensing model work?

  - by Gishu

  I've encountered multiple third part .Net component-vendors use a licensing scheme. On an evaluation copy, the components show up with a nag-screen or watermark or some such indicator. On a licensed machine, a Licenses.licx is created - with what appears to be just the assembly full name/identifiers. This file has to be included when the client assembly is built. How does this model work? Both from component-vendors' and users' perspective. What is the .licx file used for? Should it be checked in? We've had a number of issues with the wrong/right .licx file being checked in and what not

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• How should I manage data in an 2D vector based animation program?

  - by shadow

  I've been trying to design a program that makes 2D animations and then uses the ffmpeg library to create the video for possible use in tv and movies. The problem is when I think about how to manage the data in the application I can only think of two ways, I don't think either of them will work out very well. One is to use an SQlite database, but it seems like it will be difficult to save, especially if an artist puts 1000 things on screen. The other is to use something like linked lists, which would duplicate many features of the database and get complicated when dealing with things like points on a bezier curve and jumping to a frame and collecting all the objects that need to be drawn on that frame. Should I use one of these solutions, or is there something else that would be better? Currently planning to use C# for code.

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• Application crash when using an NSTimer and pushViewController

  - by Cesar

  I'm using an NSTimer to implement a 3 seconds splash screen. If a don't use a timer the view it's correctly pushed but if I use the timer for adding a little delay the application crash with a EXC_BAD_ACCESS. I'm pretty sure the answer contains "memory management" but I can't get the point... @interface RootViewController : UIViewController { NSTimer *timer; } -(void)changeView:(NSTimer*)theTimer; @property(nonatomic,retain) NSTimer *timer; ... @implementation RootViewController @synthesize timer; - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; [[self navigationController] setNavigationBarHidden:YES]; timer = [NSTimer scheduledTimerWithTimeInterval:3.0 target:self selector:@selector(changeView:) userInfo:nil repeats:NO]; } -(void)changeView:(NSTimer*)theTimer { NSLog(@"timer fired"); //Crash here, but only if called using a timer [[self navigationController] pushViewController:list animated:YES]; }

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• How do I create a class associated with a windows form in C#?

  - by xarzu

  Now that C++ development has become second nature to me, do I have to start from scratch with C#? Since the beginning of Visual Studio, there has been easy way to describe the shape of a Dialog (now called a Form) in the resource file and then use a wizard to create the corresponding C++ code. I kind of remember that in MFC it was pretty much a no-brainer to create a custom dialog with all the components you want and then all the associated code. If I have a C# app that has many forms that I want to bring to the screen based on the user's menu selections, how do I create a class associated with a windows form?

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