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• I Clobbered a Leopard with a Window Last Night

  - by D'Arcy Lussier

  I’ve had my 15” Mac Book Pro for a little over a year now, and its hands-down the best laptop I’ve ever owned…hardware wise. And I tried, I really really tried, to like OSX. I even bought Parallels so I could run Windows 7 and all my development tools while still trying to live in an OSX world. But in the end, I missed Windows too much. There were just too many shortcomings with OSX that kept me from being productive. For one thing, Office for Mac is *not* Office for Windows. The applications are written by different teams, and Excel on the Mac is just different enough to be painful. The VM experience was adequate, but my MBP would heat up like crazy when running it and the experience trying to get Windows apps to interact with an OSX file system was awkward. And I found I was in the VM more than I thought I’d be. iMovie is not as easy to use for doing simple movie editing as Windows Movie Maker. There’s no free blog editing software for OSX that’s on par with Windows Live Writer. And really, all I was using OSX for was Twitter (which I can use a Windows client for) and web browsing (also something Windows can provide obviously). So I had to ask myself – why am I forcing myself to use an operating system I don’t like, on a laptop that can support Windows 7? And so I paved my MBP and am happily running Windows 7 on it…and its fantastic! All the good stuff with the hardware is still there with the goodness of Win 7. Happy happy. I did run into some snags doing this though, and that’s really what this blog post is about – things to be aware of if you want to install Win 7 directly on your MBP metal. First, Ensure You Have Your Original Mac Install Disk This was a warning my buddy Dylan, who’s been running Win 7 on his MBP for a while now, gave me early on. The reason you need that original disk is that the hardware drivers you need are all located there. Apparently you can’t easily download them, so make sure you have them ahead of time. Second, Forget BootCamp The only reason you need BootCamp is if you still want the option to boot into OSX. If you don’t, then you don’t need BootCamp. In fact, you don’t even need BootCamp to install Win 7. What you *will* need though is a DVD with Win 7 burnt on it. Apple doesn’t support bootable USB drives. Well, actually they do for Mac Book Airs which don’t come with optical drives…but to get it working you’ll need to edit a system file of BootCamp so your make of MBP is included in an XML document, and even then you *still* are using BootCamp meaning you’ll be making an OSX partition. So don’t worry about BootCamp, just burn a Windows 7 disc, put it into the DVD drive, and restart your MBP. Third, Know The Secret Commands So after putting in the Windows 7 DVD and restarting your MBP, you’ll want to hold down the ‘C’ key during boot up. This tells the MBP that it should boot from the DVD drive instead of the hard drive. Interestingly, it appears you don’t have to do this if its the Mac OSX install disc (more on that in a second), but regardless – hold down C and Windows will start the install process. Next up is the partition process. You’ll notice that there’s a partition called ETI or something like that. This has to do with the drive format that Apple uses and how they partition their system drives. What I did – I blew it away! At first I didn’t, but I was told I couldn’t install Windows on the remaining space due to the different drive format. Blowing away the ETI partition (and all other partitions) allowed me to continue the Windows install. *REMEMBER –  No warranty is provided or implied, just telling you what I did and how I got it to work. Ok, so now Windows is installed and I’m rebooting. Everything looks good, but I need drivers! So I put in the OSX install DVD and run the BootCamp assistant which installs all the Windows drivers I need. Fantastic! Oh, I need to restart – no problem. OH NO, PROBLEM! I left the OSX install DVD in the drive and now the MBP wants to boot from the drive and install OSX! I’m not holding down the C key, what the heck?! Ok, well there must be a way to eject this disk…hmm…no physical button on the side…the eject button doesn’t seem to work on the keyboard…no little pin hole to insert something to force the disc out…well what the…?! It turns out, if you want to eject a disc at boot up, you need (and I kid you not) to plug a mouse into the laptop and hold down the right-click button while its booting. This ejected the disc for me. Seriously. Finally, Things You Should Be Aware Of Once you have Windows up and running there’s a few things you need to be aware of, mainly new keyboard shortcuts. For instance, on the Mac keyboard there is no Home, End, PageUp or PageDown. There’s also no obvious way to do something like select large amounts of text (like you would by holding Shift-Home at the end of a line of text for instance). So here’s some shortcuts you need to know: Home – fn + left arrow End – fn + right arrow Select a line of text as you would with the Home key – Shift + fn + left arrow Select a line of text as you would with the End key – Shift + fn + right arrow Page Up – fn + up arrow Page Down – fn + down arrow Also, you’ll notice that the awesome Mac track pad doesn’t respond to taps as clicks. No fear, this is just a setting that needs to be altered in the BootCamp control panel (that controls the Mac Hardware-specific settings within Windows, you can access it easily from the system tray icon) One other thing, battery life seems a bit lower than with OSX, but then again I’m also doing more than Twitter or web browsing on this thing now. Conclusion My laptop runs awesome now that I have Windows 7 on there. It’s obviously up to individual taste, but for me I just didn’t see benefits to living in an OSX world when everything I needed lived in Windows. And also, I finally am back to an operating system that doesn’t require me to eject a USB drive before physically removing it! It’s 2012 folks, how has this not been fixed?! D

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• Using GLOrtho to view Side, Front, Top perspectives of a 3D scene

  - by talldan

  Dear all, I'm building a game level editing app as part of a university project. In my application I have multiple viewports, a Perspective viewport and three orthographic views all setup to view the same scene. I've successfuly setup the orthographic views and can translate and scale them to mimic scrolling and zooming. Unfortunately, I'm having one problem - my scene still contains 3 dimensions, so objects viewed in orthographic mode of certain depths are clipped when they fall outside of my clipping volume. Most 3D authoring tools or level editors allow you to view all objects in orthographic mode regardless of depth. I guess what I need to do is scale my scene in the appropriate dimension so that all values lie between 1 and -1, is there a straightforward way of going about this? Or is there a different better approach. Thanks very much for your help, Dan

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• javascript robot

  - by sarah

  hey guys! I need help making this robot game in javascript (notepad++) please HELP! I'm really confused by the functions <html> <head><title>Robot Invasion 2199</title></head> <body style="text-align:center" onload="newGame();"> <h2>Robot Invasion 2199</h2> <div style="text-align:center; background:white; margin-right: auto; margin-left:auto;"> <div style=""> <div style="width: auto; border:solid thin red; text-align:center; margin:10px auto 10px auto; padding:1ex 0ex;font-family: monospace" id="scene"></pre> </div> <div><span id="status"></span></div> <form style="text-align:center"> PUT THE CONTROL PANEL HERE!!! </form> </div> <script type="text/javascript"> // GENERAL SUGGESTIONS ABOUT WRITING THIS PROGRAM: // You should test your program before you've finished writing all of the // functions. The newGame, startLevel, and update functions should be your // first priority since they're all involved in displaying the initial state // of the game board. // // Next, work on putting together the control panel for the game so that you // can begin to interact with it. Your next goal should be to get the move // function working so that everything else can be testable. Note that all nine // of the movement buttons (including the pass button) should call the move // function when they are clicked, just with different parameters. // // All the remaining functions can be completed in pretty much any order, and // you'll see the game gradually improve as you write the functions. // // Just remember to keep your cool when writing this program. There are a // bunch of functions to write, but as long as you stay focused on the function // you're writing, each individual part is not that hard. // These variables specify the number of rows and columns in the game board. // Use these variables instead of hard coding the number of rows and columns // in your loops, etc. // i.e. Write: // for(i = 0; i < NUM_ROWS; i++) ... // not: // for(i = 0; i < 15; i++) ... var NUM_ROWS = 15; var NUM_COLS = 25; // Scene is arguably the most important variable in this whole program. It // should be set up as a two-dimensional array (with NUM_ROWS rows and // NUM_COLS columns). This represents the game board, with the scene[i][j] // representing what's in row i, column j. In particular, the entries should // be: // // "." for empty space // "R" for a robot // "S" for a scrap pile // "H" for the hero var scene; // These variables represent the row and column of the hero's location, // respectively. These are more of a conveniece so you don't have to search // for the "H" in the scene array when you need to know where the hero is. var heroRow; var heroCol; // These variables keep track of various aspects of the gameplay. // score is just the number of robots destroyed. // screwdrivers is the number of sonic screwdriver charges left. // fastTeleports is the number of fast teleports remaining. // level is the current level number. // Be sure to reset all of these when a new game starts, and update them at the // appropriate times. var score; var screwdrivers; var fastTeleports; var level; // This function should use a sonic screwdriver if there are still charges // left. The sonic screwdriver turns any robot that is in one of the eight // squares immediately adjacent to the hero into scrap. If there are no charges // left, then this function should instead pop up a dialog box with the message // "Out of sonic screwdrivers!". As with any function that alters the game's // state, this function should call the update function when it has finished. // // Your "Sonic Screwdriver" button should call this function directly. function screwdriver() { // WRITE THIS FUNCTION } // This function should move the hero to a randomly selected location if there // are still fast teleports left. This function MUST NOT move the hero on to // a square that is already occupied by a robot or a scrap pile, although it // can move the hero next to a robot. The number of fast teleports should also // be decreased by one. If there are no fast teleports left, this function // should just pop up a message box saying so. As with any function that alters // the game's state, this function should call the update function when it has // finished. // // HINT: Have a loop that keeps trying random spots until a valid one is found. // HINT: Use the validPosition function to tell if a spot is valid // // Your "Fast Teleport" button s

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• Web Part to Update a List Data in SharePoint

  - by DanSogaard

  I'm trying to write a web part that access lists and add items in a specific list. The user modifies the web part and type in List Name, the web part has 3 TextBoxs and a Button. The user should enter data and press the save button, that should update the list and add these data in a new record. I'm using the following code to build my web part, but the save button doesn't update the list. I don't know what's wrong it just reload the page and add nothing. Edit: BTW the list am trying to update has three columns, First Name, Last Name, and Email, respectively. using System; using System.Web; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Collections.Generic; using System.Text; using Microsoft.SharePoint; using Microsoft.SharePoint.Utilities; using Microsoft.SharePoint.WebControls; using Microsoft.SharePoint.WebPartPages; using Microsoft.SharePoint.Security; namespace TimeSheetEntry { public class TimesheetEntry : System.Web.UI.WebControls.WebParts.WebPart { public TimesheetEntry() { } protected TextBox txtFirstName; protected TextBox txtLastName; protected TextBox txtEmail; protected Button btnSave; protected string listName = string.Empty; [WebBrowsable(true), WebDisplayName("List Name"), WebDescription("Enter List Name"), Personalizable(PersonalizationScope.User)] public string LN { get { return this.listName; } set { this.listName = value; } } protected override void CreateChildControls() { //initialize textboxes txtFirstName = new TextBox(); txtLastName = new TextBox(); txtEmail = new TextBox(); //initialize button btnSave = new Button(); btnSave.Text = "Save"; btnSave.Click += new EventHandler(btnSave_Click); } protected override void Render(System.Web.UI.HtmlTextWriter writer) { writer.Write("<table width=100%>"); writer.Write("<tr>"); writer.Write("<td colspan=2>"); writer.Write("</td>"); writer.Write("</tr>"); writer.Write("<tr>"); writer.Write("<td>First:<span class=’ms-formvalidation’>*</span></td>"); writer.Write("<td>"); txtFirstName.RenderControl(writer); writer.Write("</td>"); writer.Write("</tr>"); writer.Write("<tr>"); writer.Write("<td>Last Name:<span class=’ms-formvalidation’>*</span></td>"); writer.Write("<td>"); txtLastName.RenderControl(writer); writer.Write("</td>"); writer.Write("</tr>"); writer.Write("<tr>"); writer.Write("<td>Email:<span class=’ms-formvalidation’>*</span></td>"); writer.Write("<td>"); txtEmail.RenderControl(writer); writer.Write("</td>"); writer.Write("</tr>"); writer.Write("<tr>"); writer.Write("<td>"); writer.Write("</td>"); writer.Write("<td>"); btnSave.RenderControl(writer); writer.Write("</td>"); writer.Write("</tr>"); writer.Write("</table>"); } public void btnSave_Click(object sender, EventArgs e) { SPWeb web = SPContext.Current.Web; SPList timesheetList = web.Lists[this.listName]; SPListItem newTimesheetEntry = timesheetList.Items.Add(); newTimesheetEntry["First Name"] = txtFirstName.Text; newTimesheetEntry["Last Name"] = txtLastName.Text; newTimesheetEntry["Email"] = txtEmail.Text; newTimesheetEntry.Update(); timesheetList.Update(); } } }

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• Opacity in CSS, some doubts

  - by André

  Hi, I have some doubts with opacity in CSS. I have a Header and a Footer that uses opacity, but I would like to turn off opacity the opacity in the text. Is that possible? To a better understanding I will post the code. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title> stu nicholls | CSS PLaY | cross browser fixed header/footer layout basic method </title> <style type="text/css" media="screen"> #printhead {display:none;} html { height:100%; max-height:100%; padding:0; margin:0; border:0; background:#fff; font-size:80%; font-family: "trebuchet ms", tahoma, verdana, arial, sans-serif; /* hide overflow:hidden from IE5/Mac */ /* \*/ overflow: hidden; /* */ } body {height:100%; max-height:100%; overflow:hidden; padding:0; margin:0; border:0;} #content {display:block; height:100%; max-height:100%; overflow:hidden; padding-left:0px; position:relative; z-index:3; word-wrap:break-word;} #head {position:absolute; margin:0; top:0; right:18px; display:block; width:100%; height:1; background-color:transparent; font-size:1em; z-index:5; color:#000; border-bottom:1px solid #000;} #foot {position:absolute; margin:0; bottom:-1px; right:18px; display:block; width:100%; height:30px; background-color:transparent; color:#000; text-align:right; font-size:2em; z-index:4; border-top:1px solid #000;} .pad1 {display:block; width:18px; height:18px; float:left;} /* Com este "height", alinho a border do header */ .pad2 {display:block; height:100px;} .pad3 {display:block; height:0px;} /* Com este "height" controlo onde começa o content e o scroll do browser */ #content p {padding:5px;} .bold {font-size:1.2em; font-weight:bold;} .red {color:#c00; margin-left:5px; font-family:"trebuchet ms", "trebuchet", "verdana", sans-serif;} h2 {margin-left:5px;} h3 {margin-left:5px;} /* Esta classe controla as caracteristicas do background do footer e do header. */ .bkg { background-color: blue; filter:alpha(opacity=35); /* IE's opacity*/ opacity: 0.35; height: 10; } iframe { border-style: none; width: 100%; height: 100%; } </style> </head> <body> <div id="head"> <div class="bkg"> <div class="pad1"></div>Header </div> </div> <div id="content"> <div class="pad3"></div> <iframe src="http://www.yahoo.com" id="iFrame"></iframe> <div class="pad2"></div> </div> </div> <div id="foot"><div class="bkg">Footer</div></div> </body> </html> I want to maintain the opacity in the blue color in the footer and header but I would like to put the text stronger. Is that possible? Best Regards,

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• Way to get VS 2008 to stop forcing indentation on namespaces?

  - by Earlz

  I've never really been a big fan of the way most editors handle namespaces. They always force you to add an extra pointless level of indentation. For instance, I have a lot of code in a page that I would much rather prefer formatted as namespace mycode{ class myclass{ void function(){ foo(); } void foo(){ bar(); } void bar(){ //code.. } } } and not something like namespace mycode{ class myclass{ void function(){ foo(); } void foo(){ bar(); } void bar(){ //code.. } } } Honestly, I don't really even like the class thing being indented most of the time because I usually only have 1 class per file. And it doesn't look as bad here, but when you get a ton of code and lot of scopes, you can easily have indentation that forces you off the screen, and plus here I just used 2-space tabs and not 4-space as is used by us. Anyway, is there some way to get Visual Studio to stop trying to indent namespaces for me like that?

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• Screenshot Tour: Ubuntu Touch 14.04 on a Nexus 7

  - by Chris Hoffman

  Ubuntu 14.04 LTS will “form the basis of the first commercially available Ubuntu tablets,” according to Canonical. We installed Ubuntu Touch 14.04 on our own hardware to see what those tablets will be like. We don’t recommend installing this yourself, as it’s still not a polished, complete experience. We’re using “Ubuntu Touch” as shorthand here — apparently this project’s new name is “Ubuntu For Devices.” The Welcome Screen Ubuntu’s touch interface is all about edge swipes and hidden interface elements — it has a lot in common with Windows 8, actually. You’ll see the welcome screen when you boot up or unlock a Ubuntu tablet or phone. If you have new emails, text messages, or other information, it will appear on this screen along with the time and date. If you don’t, you’ll just see a message saying “No data sources available.” The Dash Swipe in from the right edge of the welcome screen to access the Dash, or home screen. This is actually very similar to the Dash on Ubuntu’s Unity desktop. This isn’t a surprise — Canonical wants the desktop and touch versions of Ubuntu to use the same code. In the future, the desktop and touch versions of Ubuntu will use the same version of Unity and Unity will adjust its interface depending on what type of device your’e using. Here you’ll find apps you have installed and apps available to install. Tap an installed app to launch it or tap an available app to view more details and install it. Tap the My apps or Available headings to view a complete list of apps you have installed or apps you can install. Tap the Search box at the top of the screen to start searching — this is how you’d search for new apps to install. As you’d expect, a touch keyboard appears when you tap in the Search field or any other text field. The launcher isn’t just for apps. Tap the Apps heading at the top of the screen and you’ll see hidden text appear — Music, Video, and Scopes. This hidden navigation is used throughout Ubuntu’s different apps and can be easy to miss at first. Swipe to the left or right to move between these screens. These screens are also similar to the different panels in Unity on the desktop. The Scopes section allows you to view different search scopes you have installed. These are used to search different sources when you start a search from the Dash. Search from the Music or Videos scopes to search for local media files on your device or media files online. For example, searching in the Music scope will show you music results from Grooveshark by default. Navigating Ubuntu Touch Swipe in from the left edge anywhere on the system to open the launcher, a bar with shortcuts to apps. This launcher is very similar to the launcher on the left of Ubuntu’s Unity desktop — that’s the whole idea, after all. Once you’ve opened an app, you can leave the app by swiping in from the left. The launcher will appear — keep moving your finger towards the right edge of teh screen. This will swipe the current app off the screen, taking you back to the Dash. Once back on the Dash, you’ll see your open apps represented as thumbnails under Recent. Tap a thumbnail here to go back to a running app. To remove an app from here, long-press it and tap the X button that appears. Swipe in from the right edge in any app to quickly switch between recent apps. Swipe in from the right edge and hold your finger down to reveal an application switcher that shows all your recent apps and lets you choose between them. Swipe down from the top of the screen to access the indicator panel. Here you can connect to Wi-Fi networks, view upcoming events, control GPS and Bluetooth hardware, adjust sound settings, see incoming messages, and more. This panel is for quick access to hardware settings and notifications, just like the indicators on Ubuntu’s Unity desktop. The Apps System settings not included in the pull-down panel are available in the System Settings app. To access it, tap My apps on the Dash and tap System Settings, search for the System Settings app, or open the launcher bar and tap the settings icon. The settings here a bit limited compared to other operating systems, but many of the important options are available here. You can add Evernote, Ubuntu One, Twitter, Facebook, and Google accounts from here. A free Ubuntu One account is mandatory for downloading and updating apps. A Google account can be used to sync contacts and calendar events. Some apps on Ubuntu are native apps, while many are web apps. For example, the Twitter, Gmail, Amazon, Facebook, and eBay apps included by default are all web apps that open each service’s mobile website as an app. Other applications, such as the Weather, Calendar, Dialer, Calculator, and Notes apps are native applications. Theoretically, both types of apps will be able to scale to different screen resolutions. Ubuntu Touch and Ubuntu desktop may one day share the same apps, which will adapt to different display sizes and input methods. Like Windows 8 apps, Ubuntu apps hide interface elements by default, providing you with a full-screen view of the content. Swipe up from the bottom of an app’s screen to view its interface elements. For example, swiping up from the bottom of the Web Browser app reveals Back, Forward, and Refresh buttons, along with an address bar and Activity button so you can view current and recent web pages. Swipe up even more from the bottom and you’ll see a button hovering in the middle of the app. Tap the button and you’ll see many more settings. This is an overflow area for application options and functions that can’t fit on the navigation bar. The Terminal app has a few surprising Easter eggs in this panel, including a “Hack into the NSA” option. Tap it and the following text will appear in the terminal: That’s not very nice, now tracing your location . . . . . . . . . . . .Trace failed You got away this time, but don’t try again. We’d expect to see such Easter eggs disappear before Ubuntu Touch actually ships on real devices. Ubuntu Touch has come a long way, but it’s still not something you want to use today. For example, it doesn’t even have a built-in email client — you’ll have to us your email service’s mobile website. Few apps are available, and many of the ones that are are just mobile websites. It’s not a polished operating system intended for normal users yet — it’s more of a preview for developers and device manufacturers. If you really want to try it yourself, you can install it on a Wi-Fi Nexus 7 (2013), Nexus 10, or Nexus 4 device. Follow Ubuntu’s installation instructions here.

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• How can I make Vim autosave files when it loses focus?

  - by Peeja

  I'm used to my editors autosaving files when they lose focus. I recently switched to MacVim, and I can't recreate that behavior. I tried this: autocmd BufLeave,FocusLost * wall but if a buffer is unnamed when the window or MacVim loses focus, I get an error like the following: Error detected while processing BufLeave Auto commands for "*": E141: No file name for buffer 1 I'm confused, because :wall's documentation says: Write all changed buffers. Buffers without a file name or which are readonly are not written. so I'd expect it to skip unnamed buffers. Is there a better way to do this?

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• Is there any better way for creating a dynamic HTML table without using any javascript library like

  - by piemesons

  Dont worry we dont need to find out any bug in this code.. Its working perfectly.:-P My boss came to me and said "Hey just tell me whats the best of way of writing code for a dynamic HTML table (add row, delete row, update row).No need to add any CSS. Just javascript. No Jquery library etc. I was confused that in the middle of the project why he asking for some stupid exercise like this. What ever i wrote the following code and mailed him and after 15 mins i got a mail from him. " I was expecting much better code from a guy like you. Anyways good job monkey.(And with a picture of monkey as attachment.) thats was the mail. Line by line. I want to reply him but before that i want to know about the quality of my code. Is this really shitty...!!! Or he was just making fun of mine. I dont think that code is really shitty. Still correct me if you can.Code is working perfectly fine. Just copy paste it in a HTML file. <html> <head> <title> Exercise CSS </title> <script type="text/javascript"> function add_row() { var table = document.getElementById('table'); var rowCount = table.rows.length; var row = table.insertRow(rowCount); var cell1 = row.insertCell(0); var element1 = document.createElement("input"); element1.type = "text"; cell1.appendChild(element1); var cell2 = row.insertCell(1); var element2 = document.createElement("input"); element2.type = "text"; cell2.appendChild(element2); var cell3 = row.insertCell(2); cell3.innerHTML = ' <span onClick="edit(this)">Edit</span>/<span onClick="delete_row(this)">Delete</span>'; cell3.setAttribute("style", "display:none;"); var cell4 = row.insertCell(3); cell4.innerHTML = '<span onClick="save(this)">Save</span>'; } function save(e) { var elTableCells = e.parentNode.parentNode.getElementsByTagName("td"); elTableCells[0].innerHTML=elTableCells[0].firstChild.value; elTableCells[1].innerHTML=elTableCells[1].firstChild.value; elTableCells[2].setAttribute("style", "display:block;"); elTableCells[3].setAttribute("style", "display:none;"); } function edit(e) { var elTableCells = e.parentNode.parentNode.getElementsByTagName("td"); elTableCells[0].innerHTML='<input type="text" value="'+elTableCells[0].innerHTML+'">'; elTableCells[1].innerHTML='<input type="text" value="'+elTableCells[1].innerHTML+'">'; elTableCells[2].setAttribute("style", "display:none;"); elTableCells[3].setAttribute("style", "display:block;"); } function delete_row(e) { e.parentNode.parentNode.parentNode.removeChild(e.parentNode.parentNode); } </script> </head> <body > <div id="display"> <table id='table'> <tr id='id'> <td> Piemesons </td> <td> 23 </td> <td > <span onClick="edit(this)">Edit</span>/<span onClick="delete_row(this)">Delete</span> </td> <td style="display:none;"> <span onClick="save(this)">Save</span> </td> </tr> </table> <input type="button" value="Add new row" onClick="add_row();" /> </div> </body>

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• Visual Editor vs Manual code

  - by Albinoswordfish

  I'm not sure how it is using other frameworks but this questions is strictly regarding Java swing. Is it better to use a Visual Editor to place objects or to manually code the placement of the objects onto the frame (Layout managers or null layouts)? From my experience I've had a lot of trouble using Visual editors when it comes to different screen resolutions or changing the window size. Using manual code to place objects I've found that my GUIs behave a lot better with regard to the screen size issue. However when I want to change a small part of my GUI it takes a lot more work compared to using a visual editor Just wondering what people's thoughts were on this?

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• Refactoring an ERB Template to Haml

  - by Liam McLennan

  ERB is the default view templating system used by Ruby on Rails. Haml is an alternative templating system that uses whitespace to represent document structure. The example from the haml website shows the following equivalent markup: Haml ERB #profile .left.column #date= print_date #address= current_user.address .right.column #email= current_user.email #bio= current_user.bio <div id="profile"> <div class="left column"> <div id="date"><%= print_date %></div> <div id="address"><%= current_user.address %></div> </div> <div class="right column"> <div id="email"><%= current_user.email %></div> <div id="bio"><%= current_user.bio %></div> </div> </div> I like haml because it is concise and the significant whitespace makes it easy to see the structure at a glance. This post is about a ruby project but nhaml makes haml available for asp.net MVC also. The ERB Template Today I spent some time refactoring an ERB template to Haml. The template is called list.html.erb and its purpose is to render a list of tweets (twitter messages). <style> form { float: left; } </style> <h1>Tweets</h1> <table> <thead><tr><th></th><th>System</th><th>Human</th><th></th></tr></thead> <% @tweets.each do |tweet| %> <tr> <td><%= h(tweet['text']) %></td> <td><%= h(tweet['system_classification']) %></td> <td><%= h(tweet['human_classification']) %></td> <td><form action="/tweet/rate" method="post"> <%= token_tag %> <input type="submit" value="Positive"/> <input type="hidden" value="<%= tweet['id']%>" name="id" /> <input type="hidden" value="positive" name="rating" /> </form> <form action="/tweet/rate" method="post"> <%= token_tag %> <input type="submit" value="Neutral"/> <input type="hidden" value="<%= tweet['id']%>" name="id" /> <input type="hidden" value="neutral" name="rating" /> </form> <form action="/tweet/rate" method="post"> <%= token_tag %> <input type="submit" value="Negative"/> <input type="hidden" value="<%= tweet['id']%>" name="id" /> <input type="hidden" value="negative" name="rating" /> </form> </td> </tr> <% end %> </table> Haml Template: Take 1 My first step was to convert this page to a Haml template in place. Directly translating the ERB template to Haml resulted in: list.haml %style form {float: left;} %h1 Tweets %table %thead %tr %th %th System %th Human %th %tbody - @tweets.each do |tweet| %tr %td= tweet['text'] %td= tweet['system_classification'] %td= tweet['human_classification'] %td %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Positive"/> <input type="hidden" value="positive" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Neutral"/> <input type="hidden" value="neutral" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Negative"/> <input type="hidden" value="negative" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} end I like this better already but I can go further. Haml Template: Take 2 The haml documentation says to avoid using iterators so I introduced a partial template (_tweet.haml) as the template to render a single tweet. _tweet.haml %tr %td= tweet['text'] %td= tweet['system_classification'] %td= tweet['human_classification'] %td %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Positive"/> <input type="hidden" value="positive" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Neutral"/> <input type="hidden" value="neutral" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag <input type="submit" value="Negative"/> <input type="hidden" value="negative" name="rating" /> %input{ :type=>"hidden", :value => tweet['id']} and the list template is simplified to: list.haml %style form {float: left;} %h1 Tweets %table     %thead         %tr             %th             %th System             %th Human             %th     %tbody         = render(:partial => "tweet", :collection => @tweets) That is definitely an improvement, but then I noticed that _tweet.haml contains three form tags that are nearly identical.   Haml Template: Take 3 My first attempt, later aborted, was to use a helper to remove the duplication. A much better solution is to use another partial.  _rate_button.haml %form{ :action=>"/tweet/rate", :method=>"post"} = token_tag %input{ :type => "submit", :value => rate_button[:rating].capitalize } %input{ :type => "hidden", :value => rate_button[:rating], :name => 'rating' } %input{ :type => "hidden", :value => rate_button[:id], :name => 'id' } and the tweet template is now simpler: _tweet.haml %tr %td= tweet['text'] %td= tweet['system_classification'] %td= tweet['human_classification'] %td = render( :partial => 'rate_button', :object => {:rating=>'positive', :id=> tweet['id']}) = render( :partial => 'rate_button', :object => {:rating=>'neutral', :id=> tweet['id']}) = render( :partial => 'rate_button', :object => {:rating=>'negative', :id=> tweet['id']}) list.haml remains unchanged. Summary I am extremely happy with the switch. No doubt there are further improvements that I can make, but I feel like what I have now is clean and well factored.

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• Generating radial indicator images using C#

  - by DigiMortal

  In one of my projects I needed to draw radial indicators for processes measured in percent. Simple images like the one shown on right. I solved the problem by creating images in C# and saving them on server hard disc so if image is once generated then it is returned from disc next time. I am not master of graphics or geometrics but here is the code I wrote. Drawing radial indicator To get things done quick’n’easy way – later may some of younger developers be the one who may need to changes things – I divided my indicator drawing process to four steps shown below. 1. Fill pie 2. Draw circles 3. Fill inner circle 4. Draw text Drawing image Here is the code to draw indicators. private static void SaveRadialIndicator(int percent, string filePath) {     using (Bitmap bitmap = new Bitmap(100, 100))     using (Graphics objGraphics = Graphics.FromImage(bitmap))     {         // Initialize graphics         objGraphics.Clear(Color.White);         objGraphics.SmoothingMode = SmoothingMode.AntiAlias;         objGraphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;           // Fill pie         // Degrees are taken clockwise, 0 is parallel with x         // For sweep angle we must convert percent to degrees (90/25 = 18/5)         float startAngle = -90.0F;                        float sweepAngle = (18.0F / 5) * percent;           Rectangle rectangle = new Rectangle(5, 5, 90, 90);         objGraphics.FillPie(Brushes.Orange, rectangle, startAngle, sweepAngle);           // Draw circles         rectangle = new Rectangle(5, 5, 90, 90);         objGraphics.DrawEllipse(Pens.LightGray, rectangle);         rectangle = new Rectangle(20, 20, 60, 60);         objGraphics.DrawEllipse(Pens.LightGray, rectangle);           // Fill inner circle with white         rectangle = new Rectangle(21, 21, 58, 58);         objGraphics.FillEllipse(Brushes.White, rectangle);           // Draw text on image         // Use rectangle for text and align text to center of rectangle         var font = new Font("Arial", 13, FontStyle.Bold);         StringFormat stringFormat = new StringFormat();         stringFormat.Alignment = StringAlignment.Center;         stringFormat.LineAlignment = StringAlignment.Center;           rectangle = new Rectangle(20, 40, 62, 20);         objGraphics.DrawString(percent + "%", font, Brushes.DarkGray, rectangle, stringFormat);           // Save indicator to file         objGraphics.Flush();         if (File.Exists(filePath))             File.Delete(filePath);           bitmap.Save(filePath, ImageFormat.Png);     }        } Using indicators on web page To show indicators on your web page you can use the following code on page that outputs indicator images: protected void Page_Load(object sender, EventArgs e) {     var percentString = Request.QueryString["percent"];     var percent = 0;     if(!int.TryParse(percentString, out percent))         return;     if(percent < 0 || percent > 100)         return;       var file = Server.MapPath("~/images/percent/" + percent + ".png");     if(!File.Exists(file))         SaveImage(percent, file);       Response.Clear();     Response.ContentType = "image/png";     Response.WriteFile(file);     Response.End(); } Om your pages where you need indicator you can set image source to Indicator.aspx (if you named your indicator handling file like this) and add percent as query string:     <img src="Indicator.aspx?percent=30" /> That’s it! If somebody knows simpler way how to generate indicators like this I am interested in your feedback.

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• Creating a "netbeans property" style dialog box

  - by pikco

  Hi I've been trying to create a GUI using netbeans, that includes a dialog similar to Netbean's own "property dialog" that appears when designing. ie. a dialog that contains a table that can be expanded by tree nodes. Something like the dialog on this page, http://platform.netbeans.org/tutorials/nbm-property-editors.html As far as I can understand, the page I linked to describes a custom editor I can set up for use within netbeans while designing - I'm just looking for a way to doing something similar for my actual application I'm writing. Is there an easy way to do this? I came across this and have tried it but it doesn't quite work in the same way as the standard Netbeans dialog. weblogs.java.net/blog/timboudreau/archive/2008/06/egads_an_actual.html Any tips greatly appreciated.

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• Android EditText and addTextChangedListener

  - by Alex

  im currently porting a database manager to android and due to performance reasons i like to update only propertys that have been modified. Im trying to do this with the addTextChangedListener in order to add modified entrys to a List, but my Program never enters any of its methods. EditText Et = (EditText) Editors.get(Prop.Name); Et.addTextChangedListener(new TextWatcher() { @Override public void afterTextChanged(Editable s) { // TODO Auto-generated method stub } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { // TODO Auto-generated method stub } @Override public void onTextChanged(CharSequence s, int start, int before, int count) { // TODO Auto-generated method stub if(Prop.GetType() == Property.PROPTYPE.num) { float f = Float.parseFloat(s.toString()); Prop.FromString(f); } else { Prop.FromString(s.toString()); } propertiesToUpdate.add(Prop); }); Et.setText(Prop.ToString());

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• How do I remove the time from printpreview dialog?

  - by Albo Best

  Here is my code: Imports System.Data.OleDb Imports System.Drawing.Printing Namespace Print Public Class Form1 Inherits System.Windows.Forms.Form Dim PrintC As PrinterClass Dim conn As OleDb.OleDbConnection Dim connectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\\db1.mdb" Dim sql As String = String.Empty Dim ds As DataSet Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load FillDataGrid() '//create printerclass object PrintC = New PrinterClass(PrintDocument1, dataGrid) End Sub Private Sub FillDataGrid() Try Dim dt As New DataTable Dim ds As New DataSet ds.Tables.Add(dt) Dim da As New OleDbDataAdapter con.Open() da = New OleDbDataAdapter("SELECT * from klient ", con) da.Fill(dt) con.Close() dataGrid.DataSource = dt.DefaultView Dim dTable As DataTable For Each dTable In ds.Tables Dim dgStyle As DataGridTableStyle = New DataGridTableStyle dgStyle.MappingName = dTable.TableName dataGrid.TableStyles.Add(dgStyle) Next ' DataGrid settings dataGrid.CaptionText = "TE GJITHE KLIENTET" dataGrid.HeaderFont = New Font("Verdana", 12) dataGrid.TableStyles(0).GridColumnStyles(0).Width = 60 dataGrid.TableStyles(0).GridColumnStyles(1).Width = 140 dataGrid.TableStyles(0).GridColumnStyles(2).Width = 140 dataGrid.TableStyles(0).GridColumnStyles(3).Width = 140 dataGrid.TableStyles(0).GridColumnStyles(4).Width = 140 dataGrid.TableStyles(0).GridColumnStyles(5).HeaderText = "" dataGrid.TableStyles(0).GridColumnStyles(5).Width = -1 Catch ex As Exception MessageBox.Show(ex.Message) End Try End Sub Private Sub btnPrint_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPrint.Click 'create printerclass object PrintC = New PrinterClass(PrintDocument1, dataGrid) PrintDocument1.Print() End Sub Private Sub btnPreview_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnPreview.Click 'create printerclass object PrintC = New PrinterClass(PrintDocument1, dataGrid) ''preview Dim ps As New PaperSize("A4", 840, 1150) ps.PaperName = PaperKind.A4 PrintDocument1.DefaultPageSettings.PaperSize = ps PrintPreviewDialog1.WindowState = FormWindowState.Normal PrintPreviewDialog1.StartPosition = FormStartPosition.CenterScreen PrintPreviewDialog1.ClientSize = New Size(600, 600) PrintPreviewDialog1.ShowDialog() End Sub Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage 'print grid Dim morepages As Boolean = PrintC.Print(e.Graphics) If (morepages) Then e.HasMorePages = True End If End Sub End Class End Namespace This is how data looks in DataGrid (that's perfect)... and here is how it looks when I click PrintPreview. (I don't want the time to appear there, the "12:00:00" part. in database the date is stored as Short Date (10-Dec-12) Can somebody suggest a way around that? Imports System Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Printing Imports System.Collections Imports System.Data Namespace Print Public Class PrinterClass '//clone of Datagrid Dim PrintGrid As Grid '//printdocument for initial printer settings Private PrintDoc As PrintDocument '//defines whether the grid is ordered right to left Private bRightToLeft As Boolean '//Current Top Private CurrentY As Single = 0 '//Current Left Private CurrentX As Single = 0 '//CurrentRow to print Private CurrentRow As Integer = 0 '//Page Counter Public PageCounter As Integer = 0 '/// <summary> '/// Constructor Class '/// </summary> '/// <param name="pdocument"></param> '/// <param name="dgrid"></param> Public Sub New(ByVal pdocument As PrintDocument, ByVal dgrid As DataGrid) 'MyBase.new() PrintGrid = New Grid(dgrid) PrintDoc = pdocument '//The grid columns are right to left bRightToLeft = dgrid.RightToLeft = RightToLeft.Yes '//init CurrentX and CurrentY CurrentY = pdocument.DefaultPageSettings.Margins.Top CurrentX = pdocument.DefaultPageSettings.Margins.Left End Sub Public Function Print(ByVal g As Graphics, ByRef currentX As Single, ByRef currentY As Single) As Boolean '//use predefined area currentX = currentX currentY = currentY PrintHeaders(g) Dim Morepages As Boolean = PrintDataGrid(g) currentY = currentY currentX = currentX Return Morepages End Function Public Function Print(ByVal g As Graphics) As Boolean CurrentX = PrintDoc.DefaultPageSettings.Margins.Left CurrentY = PrintDoc.DefaultPageSettings.Margins.Top PrintHeaders(g) Return PrintDataGrid(g) End Function '/// <summary> '/// Print the Grid Headers '/// </summary> '/// <param name="g"></param> Private Sub PrintHeaders(ByVal g As Graphics) Dim sf As StringFormat = New StringFormat '//if we want to print the grid right to left If (bRightToLeft) Then CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right sf.FormatFlags = StringFormatFlags.DirectionRightToLeft Else CurrentX = PrintDoc.DefaultPageSettings.Margins.Left End If Dim i As Integer For i = 0 To PrintGrid.Columns - 1 '//set header alignment Select Case (CType(PrintGrid.Headers.GetValue(i), Header).Alignment) Case HorizontalAlignment.Left 'left sf.Alignment = StringAlignment.Near Case HorizontalAlignment.Center sf.Alignment = StringAlignment.Center Case HorizontalAlignment.Right sf.Alignment = StringAlignment.Far End Select '//advance X according to order If (bRightToLeft) Then '//draw the cell bounds (lines) and back color g.FillRectangle(New SolidBrush(PrintGrid.HeaderBackColor), CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height) g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height) '//draw the cell text g.DrawString(PrintGrid.Headers(i).CText, PrintGrid.Headers(i).Font, New SolidBrush(PrintGrid.HeaderForeColor), New RectangleF(CurrentX - PrintGrid.Headers(i).Width, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height), sf) '//next cell CurrentX -= PrintGrid.Headers(i).Width Else '//draw the cell bounds (lines) and back color g.FillRectangle(New SolidBrush(PrintGrid.HeaderBackColor), CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height) g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height) '//draw the cell text g.DrawString(PrintGrid.Headers(i).CText, PrintGrid.Headers(i).Font, New SolidBrush(PrintGrid.HeaderForeColor), New RectangleF(CurrentX, CurrentY, PrintGrid.Headers(i).Width, PrintGrid.Headers(i).Height), sf) '//next cell CurrentX += PrintGrid.Headers(i).Width End If Next '//reset to beginning If (bRightToLeft) Then '//right align CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right Else '//left align CurrentX = PrintDoc.DefaultPageSettings.Margins.Left End If '//advance to next row CurrentY = CurrentY + CType(PrintGrid.Headers.GetValue(0), Header).Height End Sub Private Function PrintDataGrid(ByVal g As Graphics) As Boolean Dim sf As StringFormat = New StringFormat PageCounter = PageCounter + 1 '//if we want to print the grid right to left If (bRightToLeft) Then CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right sf.FormatFlags = StringFormatFlags.DirectionRightToLeft Else CurrentX = PrintDoc.DefaultPageSettings.Margins.Left End If Dim i As Integer For i = CurrentRow To PrintGrid.Rows - 1 Dim j As Integer For j = 0 To PrintGrid.Columns - 1 '//set cell alignment Select Case (PrintGrid.Cell(i, j).Alignment) '//left Case HorizontalAlignment.Left sf.Alignment = StringAlignment.Near Case HorizontalAlignment.Center sf.Alignment = StringAlignment.Center '//right Case HorizontalAlignment.Right sf.Alignment = StringAlignment.Far End Select '//advance X according to order If (bRightToLeft) Then '//draw the cell bounds (lines) and back color g.FillRectangle(New SolidBrush(PrintGrid.BackColor), CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height) g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height) '//draw the cell text g.DrawString(PrintGrid.Cell(i, j).CText, PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor), New RectangleF(CurrentX - PrintGrid.Cell(i, j).Width, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height), sf) '//next cell CurrentX -= PrintGrid.Cell(i, j).Width Else '//draw the cell bounds (lines) and back color g.FillRectangle(New SolidBrush(PrintGrid.BackColor), CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height) g.DrawRectangle(New Pen(PrintGrid.LineColor), CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height) '//draw the cell text '//Draw text by alignment g.DrawString(PrintGrid.Cell(i, j).CText, PrintGrid.Cell(i, j).Font, New SolidBrush(PrintGrid.ForeColor), New RectangleF(CurrentX, CurrentY, PrintGrid.Cell(i, j).Width, PrintGrid.Cell(i, j).Height), sf) '//next cell CurrentX += PrintGrid.Cell(i, j).Width End If Next '//reset to beginning If (bRightToLeft) Then '//right align CurrentX = PrintDoc.DefaultPageSettings.PaperSize.Width - PrintDoc.DefaultPageSettings.Margins.Right Else '//left align CurrentX = PrintDoc.DefaultPageSettings.Margins.Left End If '//advance to next row CurrentY += PrintGrid.Cell(i, 0).Height CurrentRow += 1 '//if we are beyond the page margin (bottom) then we need another page, '//return true If (CurrentY > PrintDoc.DefaultPageSettings.PaperSize.Height - PrintDoc.DefaultPageSettings.Margins.Bottom) Then Return True End If Next Return False End Function End Class End Namespace

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• File Upload in GWT in a Special Case

  - by Maksud

  I am doing a software for a document system. In this system when a user completes a document and want to save it, the document will be uploaded directly to server without the user action. This system uses COM/ActiveX to facilitate user using native editors. Ok, my problem is: suppose I have a file say d:/notepad.txt. Using classical method a user can browse the file and upload it. I can do that with apache commonio and GWT FormPanel and FileUpload. But if I know the filename (d:/notepad.txt), is there any way to upload the file directly to server without the user having to browse the file. I am currently doing this by the ActiveX componenet calling some HttpUpload methods with POST. But that does not maintain session. Thanks

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• How do you move html from one div to another with Jquery without breaking javascript

  - by KallDrexx

  I have two divs for different sections of my webpage, a working and a reference section. One is fixed size, the other is variable sized and they are vertically stacked. I am trying to design it so that if you want to work on something in the reference pane, you click a link and it swaps all the data between the two panes. My idea was to do the following: var working = $("#working_pane").html(); var ref = $("#reference_pane").html(); $("#working_pane").html(ref); $("#reference_pane").html(working); The problem with this, is it seems that any javascript referenced inside of these panes (for example, in place editors) get broken upon switching. No javascript errors occur, it's just that nothing happens, like the javascript ties are broken. Is there any to move the html without breaking the javascript contained?

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• How to override HTML <FONT SIZE="2"> with CSS

  - by Deverill

  I was given the task of doing a facelift to our current site. I am moderately well versed in CSS so I am converting the bazillion tags to CSS styles and deleting about 2 times that many that were simply not necessary. It's all going well until I run into a certain product page that is only a wrapper into which other HTML files are pulled by a server.execute(filename) command. (we're using aspx for the wrapper page.) There are almost 700 of these pages and they all are cursed with this and that. Past editors with FrontPage that only know how to drag pretty things on the screen. Anyway, I am wondering if there is a way to use CSS in the wrapper page to override the tag behavior so I can make it something sane that fits with the rest of my pages. I'd even be open to something JavaScript that would remove the tags, but that's my less preferred solution. Thanks!

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• Is there a decent JSON editor around?

  - by al4nis

  I'm looking for a JSON editor that is able to do syntax checking and outline view. Browser-based editors are not an option as they are clumsy for editing lots of local files. Eclipse plug-in would be ideal, but I would be happy with anything that works. I found only two so far, those in Aptana Studio Pro and Spket IDE (both available as plug-ins for Eclipse). While they have decent outline views, their syntax checking doesn't catch most of the common errors (like missing commas or braces) which makes them almost useless.

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• Adventures in Windows 8: Working around the navigation animation issues in LayoutAwarePage

  - by Laurent Bugnion

  LayoutAwarePage is a pretty cool add-on to Windows 8 apps, which facilitates greatly the implementation of orientation-aware (portrait, landscape) as well as state-aware (snapped, filled, fullscreen) apps. It has however a few issues that are obvious when you use transformed elements on your page. Adding a LayoutAwarePage to your application If you start with a blank app, the MainPage is a vanilla Page, with no such feature. In order to have a LayoutAwarePage into your app, you need to add this class (and a few helpers) with the following operation: Right click on the Solution and select Add, New Item from the context menu. From the dialog, select a Basic Page (not a Blank Page, which is another vanilla page). If you prefer, you can also use Split Page, Items Page, Item Detail Page, Grouped Items Page or Group Detail Page which are all LayoutAwarePages. Personally I like to start with a Basic Page, which gives me more creative freedom. Adding this new page will cause Visual Studio to show a prompt asking you for permission to add additional helper files to the Common folder. One of these helpers in the LayoutAwarePage class, which is where the magic happens. LayoutAwarePage offers some help for the detection of orientation and state (which makes it a pleasure to design for all these scenarios in Blend, by the way) as well as storage for the navigation state (more about that in a future article). Issue with LayoutAwarePage When you use UI elements such as a background picture, a watermark label, logos, etc, it is quite common to do a few things with those: Making them partially transparent (this is especially true for background pictures; for instance I really like a black Page background with a half transparent picture placed on top of it). Transforming them, for instance rotating them a bit, scaling them, etc. Here is an example with a picture of my two beautiful daughters in the Bird Park in Kuala Lumpur, as well as a transformed TextBlock. The image has an opacity of 40% and the TextBlock a simple RotateTransform. If I create an application with a MainPage that navigates to this LayoutAwarePage, however, I will have a very annoying effect: The background picture appears with an Opacity of 100%. The TextBlock is not rotated. This lasts only for less than a second (during the navigation animation) before the elements “snap into place” and get their desired effect. Here is the XAML that cause the annoying effect: <common:LayoutAwarePage x:Name="pageRoot" x:Class="App13.BasicPage1" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:common="using:App13.Common" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"> <Grid Style="{StaticResource LayoutRootStyle}"> <Grid.RowDefinitions> <RowDefinition Height="140" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <Image Source="Assets/el20120812025.jpg" Stretch="UniformToFill" Opacity="0.4" Grid.RowSpan="2" /> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}" /> <TextBlock x:Name="pageTitle" Grid.Column="1" Text="Welcome" Style="{StaticResource PageHeaderTextStyle}" /> </Grid> <TextBlock HorizontalAlignment="Center" TextWrapping="Wrap" Text="Welcome to my Windows 8 Application" Grid.Row="1" VerticalAlignment="Bottom" FontFamily="Segoe UI Light" FontSize="70" FontWeight="Light" TextAlignment="Center" Foreground="#FFFFA200" RenderTransformOrigin="0.5,0.5" UseLayoutRounding="False" d:LayoutRounding="Auto" Margin="0,0,0,153"> <TextBlock.RenderTransform> <CompositeTransform Rotation="-6.545" /> </TextBlock.RenderTransform> </TextBlock> <VisualStateManager.VisualStateGroups> [...] </VisualStateManager.VisualStateGroups> </Grid> </common:LayoutAwarePage> Solving the issue In order to solve this “snapping” issue, the solution is to wrap the elements that are transformed into an empty Grid. Honestly, to me it sounds like a bug in the LayoutAwarePage navigation animation, but thankfully the workaround is not that difficult: Simple change the main Grid as follows: <Grid Style="{StaticResource LayoutRootStyle}"> <Grid.RowDefinitions> <RowDefinition Height="140" /> <RowDefinition Height="*" /> </Grid.RowDefinitions> <Grid Grid.RowSpan="2"> <Image Source="Assets/el20120812025.jpg" Stretch="UniformToFill" Opacity="0.4" /> </Grid> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <Button x:Name="backButton" Click="GoBack" IsEnabled="{Binding Frame.CanGoBack, ElementName=pageRoot}" Style="{StaticResource BackButtonStyle}" /> <TextBlock x:Name="pageTitle" Grid.Column="1" Text="Welcome" Style="{StaticResource PageHeaderTextStyle}" /> </Grid> <Grid Grid.Row="1"> <TextBlock HorizontalAlignment="Center" TextWrapping="Wrap" Text="Welcome to my Windows 8 Application" VerticalAlignment="Bottom" FontFamily="Segoe UI Light" FontSize="70" FontWeight="Light" TextAlignment="Center" Foreground="#FFFFA200" RenderTransformOrigin="0.5,0.5" UseLayoutRounding="False" d:LayoutRounding="Auto" Margin="0,0,0,153"> <TextBlock.RenderTransform> <CompositeTransform Rotation="-6.545" /> </TextBlock.RenderTransform> </TextBlock> </Grid> <VisualStateManager.VisualStateGroups> [...] </Grid> Hopefully this will help a few people, I banged my head on the wall for a while before someone at Microsoft pointed me to the solution ;) Happy coding, Laurent   Laurent Bugnion (GalaSoft) Subscribe | Twitter | Facebook | Flickr | LinkedIn

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• How to use OCL constraints to prevent node creation in an GMF generated editor

  - by TheMorph

  Hello, I am working on editors created with GMF and struggling with OCL right now. Is there a possibilty to prevent a node to be created if an OCL statement in the mapping evaluates to false? If tried adding an OCL statement to a node and all it does is making the node not visible in the editor, but it is created. There is also an OCL statement in the ecore file, but this way it is only evaluated when there should be something done with the created model. I does not prevent a user to construct an invalid model but this is what I intend to prevent. Thanks in advance, Morph

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• I'd like to know why a function executes fine when called from x but not when called from y

  - by Roland

  When called from archive(), readcont(char *filename) executes fine! Called from runoptions() though, it fails to list the files "archived"! why is this? The program must run in terminal. Use -h as a parameter to view the usage. This program is written to "archive" text files into ".rldzip" files. readcont( char *x) should show the files archived in file (*x) a) Successful call Use the program to archive 3 text files: rldzip.exe a.txt b.txt c.txt FILEXY -a archive() will call readcont and it will work showing the files archived after the binary FILEXY will be created. b) Unsuccessful call After the file is created, use: rldzip.exe FILEXY.rldzip -v You can see that the function crashes! I'd like to know why is this happening! /* Sa se scrie un program care: a) arhiveaza fisiere b) dezarhiveaza fisierele athivate */ #include<stdio.h> #include<stdlib.h> #include<conio.h> #include<string.h> struct content{ char *text; char *flname; }*arc; FILE *f; void readcont(char *x){ FILE *p; if((p = fopen(x, "rb")) == NULL){ perror("Critical error: "); exit(EXIT_FAILURE); } content aux; int i; fread(&i, sizeof(int), 1, p); printf("\nFiles in %s \n\n", x); while(i-- >1 && fread(&aux, sizeof(struct content), 1, p) != 0) printf("%s \n", aux.flname); fclose(p); printf("\n\n"); } void archive(int argc, char **argv){ int i; char inttext[5000], textline[1000]; //Allocate dynamic memory for the content to be archived! arc = (content*)malloc(argc * sizeof(content)); for(i=1; i< argc; i++) { if((f = fopen(argv[i], "r")) == NULL){ printf("%s: ", argv[i]); perror(""); exit(EXIT_FAILURE); } while(!feof(f)){ fgets(textline, 5000, f); strcat(inttext, textline); } arc[i-1].text = (char*)malloc(strlen(inttext) + 1); strcpy(arc[i-1].text, inttext); arc[i-1].flname = (char*)malloc(strlen(argv[i]) + 1); strcpy(arc[i-1].flname, argv[i]); fclose(f); } char *filen; filen=(char*)malloc(strlen(argv[argc])+1+7); strcpy(filen, argv[argc]); strcat(filen, ".rldzip"); f = fopen(filen, "wb"); fwrite(&argc, sizeof(int), 1, f); fwrite(arc, sizeof(content), argc, f); fclose(f); printf("Success! "); for(i=1; i< argc; i++) { (i==argc-1)? printf("and %s ", argv[i]) : printf("%s ", argv[i]); } printf("compressed into %s", filen); readcont(filen); free(filen); } void help(char *v){ printf("\n\n----------------------RLDZIP----------------------\n\nUsage: \n\n Archive n files: \n\n%s $file[1] $file[2] ... $file[n] $output -a\n\nExample:\n%s a.txt b.txt c.txt output -a\n\n\n\nView files:\n\n %s $file.rldzip -v\n\nExample:\n %s fileE.rldzip -v\n\n", v, v, v, v); } void runoptions(int c, char **v){ int i; if(c < 2){ printf("Arguments missing! Use -h for help"); } else{ for(i=0; i<c; i++) if(strcmp(v[i], "-h") == 0){ help(v[0]); exit(2); } for(i=0; i<c; i++) if(strcmp(v[i], "-v") == 0){ if(c != 3){ printf("Arguments misused! Use -h for help"); exit(2); } else { printf("-%s-", v[1]); readcont(v[1]); } } } if(strcmp(v[c-1], "-a") == 0) archive(c-2, v); } main(int argc, char **argv) { runoptions(argc, argv); }

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• List of files and libraries that Window SDK contains?

  - by AKN

  For developing programs for windows, we need windows SDK. I understand that this SDK is what helps to create windows and handle window events and all that. I suppose it also enables us to manipulate with files and registries. (Does the same SDK is the reason for thread creation and handling?) All that is fine. I would like to know what are the files and libraries that come as a part of this SDK. Also does it come when I install the OS or when I install editors like Visual studio? Sometimes I see links to windows SDK separately as such. Is it same as the one that I get when installing Visual Studio or has something more than that.

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• Best Practices for Content Types in SharePoint

  - by Anna Karin

  Hi all, Recently, we came across a severe problem in production farm with the Content Types. I would like to explain the background of this problem first. We have nice working feature for Content Types installation in production and test farms. We developed and deployed (using wsps) this SharePoint feature in Visual studio. We are using the publishing pages using page layouts and Content Types to help content editors to quickly publish the web pages. Unfortunately, some Content Types have been manually updated/added by some people in the production, so whenever I (developer) make some changes to the existing Content Types (using Visual Studio and feature activation/deactivation) , SharePoint removes one or two columns (during feature activation/deactivation) from Content Types; or the columns which have not been added in a best practice way. I think the best practice is to update Content Types using Visual Studio. Now, I wish to ensure that site columns shouldn't get removed from Content Types upon feature activation/deactivation. Note: Our feature for Content Type activation/deactivation doesn't hold any activation dependencies in the feature.xml

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• CSS Menu loses focus when part of jquery hover()

  - by Steve Syfuhs

  I have the following html (viewable at www.communityftw.com) <table width="100%"> <tr> <td style="text-align: left"> <!-- 2008.3.1314.35 --><span id="headerSearch1_sb_form_q_wrapper" class="RadInput_Default" style="white-space:nowrap;"><input value="language..." type="text" size="20" id="headerSearch1_sb_form_q_text" name="headerSearch1_sb_form_q_text" class="riTextBox riEmpty sw_qboxTop" name="q" style="width:140px;" /><input id="headerSearch1_sb_form_q" name="ctl00$headerSearch1$sb_form_q" class="rdfd_" style="visibility:hidden;margin:-18px 0 0 0;width:1px;height:1px;overflow:hidden;border:0;padding:0;" type="text" value="" /><input id="headerSearch1_sb_form_q_ClientState" name="headerSearch1_sb_form_q_ClientState" type="hidden" /></span> <input type="submit" name="ctl00$headerSearch1$sb_form_go" value="" id="headerSearch1_sb_form_go" class="sw_qbtnTop" /> </td> <td style="text-align: left"> <ul id="menu"> <li class="languageContainer"> <div> <a href="#" id="languageField"> <img src="/images/flags/ca.png" alt="Canada" /> Canada (English)</a> </div> <ul id="language"> <li><a href="#" id="A1"> <img src="/images/flags/ca.png" alt="Canada" /> Canada (French)</a> </li> <li><a href="#" id="A2"> <img src="/images/flags/us.png" alt="United States" /> United States</a> </li> <li><a href="#" id="A3"> <img src="/images/flags/de.png" alt="Germany" /> Germany</a> </li> <li><a href="#" id="A4"> <img src="/images/flags/fr.png" alt="France" /> France</a> </li> <li><a href="#" id="A5"> <img src="/images/flags/ru.png" alt="Russia" /> Russia</a> </li> <li class="last"> <img alt="" src="images/langLocDrop_r4_c1.png" /> </li> </ul> </li> </ul> </td> </tr> </table> Javascript/jquery $('#slide').animate({ top: '-=34' }, 1000); $("#slide").hover(function () { $(this).animate({ top: '+=34' }); }, function () { $(this).animate({ top: '-=34' }); }); menu { margin: 0px; padding: 0px; list-style: none; display: inline-block; float: left; z-index: 1000; } menu a { color: #dc2525; text-decoration: none; } menu li { background: none repeat scroll 0 0; cursor: pointer; float: left; position: relative; } menu li a:hover { color: orange; } menu ul { padding: 0px; margin: 0px; display: block; display: inline; } menu li ul { position: absolute; left: -15px; top: 0px; margin-top: 20px; width: 170px; line-height: 16px; background-image: url(/images/langLocDrop_r2_c1.png); display: none; } menu li:hover ul { display: block; } menu li ul li { display: block; margin: 5px 20px; padding: 5px 0px; border-top: dotted 1px #606060; list-style-type: none; } menu li ul li:first-child { border-top: none; } menu li ul li a { display: block; } menu li ul li a:hover { color: orange; } .languageContainer div { display: inline; padding: 5px; } languageField img { display: inline; vertical-align: middle; } language img { display: inline; } menu .last { background: transparent none repeat scroll 0% 0%; margin: 0px; padding: 0px; border: none; position: relative; border: none; height: 0px; } What I'm trying to do is have a menu mostly hidden at the top except when you mouse over it, and then have a submenu (just css driven) pop out when you mouse over the language. What is happening though is that when I move onto the language list, and I go past Germany (~50% down the list?), the hover() loses focus and closes the original menu, which closes the language menu. Any idea's what is causing the issue? Any ideas how to fix the issue? I have tried the hoverIntent() plugin as well to no avail.

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