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• How can I get run Ubuntu Desktop on my Galaxy Nexus?

  - by Jack Senechal

  On the Ubuntu for phones site it advertises the desktop view feature: "The phone becomes a full PC and thin client when docked.". And there's the demo by Canonical of something similar running under Ubuntu for Android. I realize they're different systems, but the end effect is in both is to have a full Ubuntu system running on the phone. I've installed Ubuntu Touch Preview on my Galaxy Nexus (toro), and it's working as expected (no cellular signal, but wifi works, etc). But when I plug in a monitor via HDMI it just mirrors the phone's touch display. There's also currently no bluetooth support for attaching keyboard and mouse. Keyboard only kind of works via USB, and mouse not at all. I've also tried running Ubuntu under Android via VNC, but the lack of responsiveness of VNC makes it impractical for daily use. I'd consider that route again if there is some way to make the UI more responsive. So the question is, how can set up my phone to run Ubuntu Desktop in a way that's useable as a laptop replacement? Is there a way to enable Desktop View on Ubuntu Touch? Or can I run Ubuntu for Android as in the previously referenced demo? Plugging into a monitor would be OK, but I'd love to be able to use the desktop interface with mouse and keyboard through the phone's screen as well. Touch input and an onscreen keyboard would be a plus but is definitely not necessary.

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• Can't get sprite to rotate correctly?

  - by rphello101

  I'm attempting to play with graphics using Java/Slick 2d. I'm trying to get my sprite to rotate to wherever the mouse is on the screen and then move accordingly. I figured the best way to do this was to keep track of the angle the sprite is at since I have to multiply the cosine/sine of the angle by the move speed in order to get the sprite to go "forwards" even if it is, say, facing 45 degrees in quadrant 3. However, before I even worry about that, I'm having trouble even getting my sprite to rotate in the first place. Preliminary console tests showed that this code worked, but when applied to the sprite, it just kind twitches. Anyone know what's wrong? int mX = Mouse.getX(); int mY = HEIGHT - Mouse.getY(); int pX = sprite.x; int pY = sprite.y; int tempY, tempX; double mAng, pAng = sprite.angle; double angRotate=0; if(mX!=pX){ tempY=pY-mY; tempX=mX-pX; mAng = Math.toDegrees(Math.atan2(Math.abs((tempY)),Math.abs((tempX)))); if(mAng==0 && mX<=pX) mAng=180; } else{ if(mY>pY) mAng=270; else mAng=90; } //Calculations if(mX<pX&&mY<pY){ //If in Q2 mAng = 180-mAng; } if(mX<pX&&mY>pY){ //If in Q3 mAng = 180+mAng; } if(mX>pX&&mY>pY){ //If in Q4 mAng = 360-mAng; } angRotate = mAng-pAng; sprite.angle = mAng; sprite.image.setRotation((float)angRotate);

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• Instructor Insight: Dealing with Columns in Oracle JD Edwards Enterprise One Tools Release 9.1

  - by Breanne Cooley

  Oracle JD Edwards Enterprise One Tools Release  9.1 has many new features that will help end users be more efficient in their daily jobs. For example, hiding grid columns is now as easy as a left-mouse click. In earlier releases, users could click on the ‘Customize Grid’ link but still had to do several more clicks to hide or show a column . The following example shows how easy this new feature is to use. First, right-mouse click on the column you want to hide; for example the ‘Long Address’ column. The column is now hidden. Second, right-mouse over on any of the columns to show the ‘Unhide’ option. After you select ‘Unhide’, the hidden column is shown. You can then select the column to show, or unhide, the column. This new feature and others are covered in the JD Edwards EnterpriseOne System Administration Rel 9.x course, which has been updated to reflect the new release. Hope to see you in class! -Randy Richeson, Senior Principal Instructor, Oracle University

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• Getting touchpad to work in desktop ubuntu

  - by kamziro

  I bought a small touchpad to stick on top of the keyboard, and it works fine on the windows computer, but not on my ubuntu desktop. I mean, when I do "xinput list" it shows the following: ? Virtual core pointer id=2 [master pointer (3)] ? ? Virtual core XTEST pointer id=4 [slave pointer (2)] ? ? PIXART USB OPTICAL MOUSE id=8 [slave pointer (2)] ? ? Logitech USB-PS/2 Optical Mouse id=11 [slave pointer (2)] ? ? Microsoft Wired Keyboard 600 id=13 [slave pointer (2)] ? ? Macintosh mouse button emulation id=14 [slave pointer (2)] ? ? Cirque Corporation 9925 AG Touchpad id=15 [slave pointer (2)] ? Virtual core keyboard id=3 [master keyboard (2)] ? Virtual core XTEST keyboard id=5 [slave keyboard (3)] ? Power Button id=6 [slave keyboard (3)] ? Power Button id=7 [slave keyboard (3)] ? No brand SP04-A1 id=9 [slave keyboard (3)] ? Elite Silicon USB Audio Device id=10 [slave keyboard (3)] ? Microsoft Wired Keyboard 600 id=12 [slave keyboard (3)] The Cirque Corporation touchpad (I'm assuming that's the component name) is the touchpad. Is there anything I'm missing?

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• Flixel: doesn't light tile up

  - by Arno

  i'm creating a game with flixel, and I want to have a effect when you mouse over a tile, I tried implementing it, and this is what it gives: public class GameState extends FlxState { private var block:EmptyBlock; public function GameState() { } override public function create():void { for (var i:Number = 0; i < 30; i++) { block = new EmptyBlock(i, 20); block.create(); } } override public function update():void { block.update(); super.update(); } } } GameState class and here is the EmptyBlock class: public class EmptyBlock { private var x:int; private var y:int; private var row:FlxRect public function EmptyBlock(x:int, y:int ) { this.x = x; this.y = y; } public function create():void { row = new FlxRect(x, y, 32, 32); trace ("Created block at" + x + y); } public function update():void { if (FlxG.mouse.screenX == row.x) { if (FlxG.mouse.screenY == row.y) { var outline:FlxSprite = new FlxSprite(row.x, row.y).makeGraphic(row.width, row.height, 0x002525); } } } } }

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• Why does Unity not extend to my 2nd monitor, even when it is displaying an X-Screen?

  - by Gridwalker

  I recently added a 2nd video card to my system, but unity refuses to extend my desktop over to the second screen. Although the secondary monitor initialises when I boot and I can move the mouse cursor over to the 2nd screen, the screen is otherwise blank (showing no wallpaper or interface elements) and I am unable to move any windows to this monitor. Moving the mouse cursor over to the 2nd monitor changes it from the default cursor to the old-style X cursor, such as the one that appears when you run X-kill, indicating that this screen is initialised in the X Server but that Unity is not recognising it. Although the Nvidia X Server Settings application can see both monitors, the unity systems settings application does not detect the 2nd adapter. Sometimes the additional drivers application can see both adapters, but it doesn't consistently show options for them both. Xrandr also fails to detect the 2nd monitor, but iNex lists both adapters. I have experimented with several different drivers for each adapter and with setting each of the graphics cards as the primary adapter in the BIOS, but this has made little difference. The two adapters are an onboard Geforce 8200 and a PCIE Geforce 7200 GX. The onboard adapter is currently set as the primary, however this adapter crashes whenever I use the Nouveau driver and I have to switch over to the PCIE as a primary whenever I purge the proprietary drivers (switching back when the 304 driver has been reinstalled). It doesn't matter which adapter I set as my primary, the results are the same : one screen showing the unity interface and one screen showing an X-Screen that only displays the mouse cursor. All I want is to be able to run this system in a dual screen configuration. I am not a gamer, nor do I require 3D rendering capabilities. Anything you can suggest to get the desktop to extend across both screens will be massively appreciated!

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• One monitor getting spilled over into other monitor: how to do a 100% reset of gnome graphics configuration

  - by Paul Nathan

  I had to kill a VMWare process and afterwards, my monitor's configuration is buggy. I have 2 monitors in a side-by-side configuration. My right-hand monitor is the secondary monitor. Upon its right-hand side there are about 50 pixels showing from the left side of the lefthand monitor (ie, as if it was wrapped around). Further, my mouse clicks are registering as about 50 pixels sideways from where they should be. It's as if those 50 pixels between monitors got gobbled. What have I done? I've reset the screen configuration in multiple ways, using xrandr, multiple monitors app, etc. This persists in different side-by-side configurations, and also persists with another user. It does not occur with XFCE. Resetting the Window manager with the Compiz reset WM app does not fix this. I've concluded the burn-to-the-ground approach is likely the best, and would like to do a 100% reset of my graphics settings. It's an Intel integrated chipset. Removing ~/.config/monitors.xml did not work. Also, interestingly, the mouse can mouse-over the 50 errant pixels on the rhs of the right-hand monitor. I hypothesize that it's a compositing problem occurring at the layer where the background, selection, and clicks are caught. Also, inverting the right-hand monitor removes the issue, but renders the screen unusable. Even more datapoints: This happens in KDE as well Sometimes logging into Gnome and running xrandr --output DVI1 --auto resets it, but the issue immediately reappears when I press alt-tab. With Compiz Application Switch turned on, the workspace is 'pushed back' a bit, and the slice on the RHS follows it as well. I'm wondering if it's a flaw in the compiz workspace compositing configuration. I suspect the error was in the compositing configuration. I installed 11.10.

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• Smooth drag scrolling of an Isometric map - Html5

  - by user881920

  I have implemented a basic Isometric tile engine that can be explored by dragging the map with the mouse. Please see the fiddle below and drag away: http://jsfiddle.net/kHydg/14/ The code broken down is (CoffeeScript): The draw function draw = -> requestAnimFrame draw canvas.width = canvas.width for row in [0..width] for col in [0..height] xpos = (row - col) * tileHeight + width xpos += (canvas.width / 2) - (tileWidth / 2) + scrollPosition.x ypos = (row + col) * (tileHeight / 2) + height + scrollPosition.y context.drawImage(defaultTile, Math.round(xpos), Math.round(ypos), tileWidth, tileHeight) Mouse drag-scrolling control scrollPosition = x: 0 y: 0 dragHelper = active: false x: 0 y: 0 window.addEventListener 'mousedown', (e) => handleMouseDown(e) , false window.addEventListener 'mousemove', (e) => handleDrag(e) , false window.addEventListener 'mouseup', (e) => handleMouseUp(e) , false handleDrag = (e) => e.preventDefault() if dragHelper.active x = e.clientX y = e.clientY scrollPosition.x -= Math.round((dragHelper.x - x) / 28) scrollPosition.y -= Math.round((dragHelper.y - y) / 28) handleMouseUp = (e) => e.preventDefault() dragHelper.active = false handleMouseDown = (e) => e.preventDefault() x = e.clientX y = e.clientY dragHelper.active = true dragHelper.x = x dragHelper.y = y The Problem As you can see from the fiddle the dragging action is ok but not perfect. How would I change the code to make the dragging action more smooth? What I would like is the point of the map you click on to stay under the mouse point whilst you drag; the same as they have done here: http://craftyjs.com/demos/isometric/

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• XNA - Inconsistent accessibility: parameter type is less accessible than method

  - by DijkeMark

  I have a level class in which I make a new turret. I give the turret the level class as parameter. So far so good. Then in the Update function of the Turret I call a function Shoot(), which has that level parameter it got at the moment I created it. But from that moment it gives the following error: Inconsistent accessibility: parameter type 'Space_Game.Level' is less accessible than method 'Space_Game.GameObject.Shoot(Space_Game.Level, string)' All I know it has something to do with not thr right protection level or something like that. The level class: public Level(Game game, Viewport viewport) { _game = game; _viewport = viewport; _turret = new Turret(_game, "blue", this); _turret.SetPosition((_viewport.Width / 2).ToString(), (_viewport.Height / 2).ToString()); } The Turret Class: public Turret(Game game, String team, Level level) :base(game) { _team = team; _level = level; switch (_team) { case "blue": _texture = LoadResources._blue_turret.Texture; _rows = LoadResources._blue_turret.Rows; _columns = LoadResources._blue_turret.Columns; _maxFrameCounter = 10; break; default: break; } _frameCounter = 0; _currentFrame = 0; _currentFrameMultiplier = 1; } public override void Update() { base.Update(); SetRotation(); Shoot(_level, "turret"); } The Shoot Function (Which is in GameObject class. The Turret Class inherited the GameObject Class. (Am I saying that right?)): protected void Shoot(Level level, String type) { MouseState mouse = Mouse.GetState(); if (mouse.LeftButton == ButtonState.Pressed) { switch (_team) { case "blue": switch (type) { case "turret": TurretBullet _turretBullet = new TurretBullet(_game, _team); level.AddProjectile(_turretBullet); break; default: break; } break; default: break; } } } Thanks in Advance, Mark Dijkema

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• What's a good way to check that a player has clicked on an object in a 3D game?

  - by imja

  I'm programming a 3D game (using C++ and OpenGL), and I have a few 3D objects in the scene, we can say they are boxes for this example. I want to let the player click on those boxes to select them (ie. they might change color) with the typical restriction like if more than one box is located where the user clicked, only the one closest to the camera would get selected. What would be the best way to do this? The fact that these objects go through several transforms before getting to window coordinates is what makes this a bit tricky. One approach I thought about was that if the player clicks on the screen, I could normalize the x,y coordinates of mouse click and then transform the bounding box coordinates of the objects into clip-space so that I could compare then to the normalized mouse coordinates. I guess I could then do some sort of ray-box collision test to see if any objects lie as the path of the mouse click. I'm afraid I might be over complicating it. Any better methods out there?

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• Touchpad issues on HP Pavilion dm4 (can't right click)

  - by Habstinat

  Can anyone help me with my touchpad issues? I have a HP Pavilion dm4 and it has two areas on the bottom of the touchpad to designate right and left clicks. This mostly doesn't work on Ubuntu in the fact that it recognizes any taps on either tap zone as a left click. Instead, I have it set so if I tap anywhere on the pad it makes a left click. There should be, and there are, many ways in the mouse configuration window to simulate a right click using only a touchpad. None of these work. Changing mouse orientation doesn't do anything, "dwell click" also does nothing, and, the oddest part of this problem, whenever I try to turn "Simulated Secondary Click" off (it doesn't work anyways, but just to try to toggle it), the entire theme of my desktop changes to a gray Windows '95ey look. The only way to get rid of this is to close and reopen the mouse preferences window. My computer is fairly new and the Ubuntu installation is less than a day old. I didn't do anything that I think could cause this. The problem is that I can't right click. Help, please?s that I can't right click. Help, please? Afterword: I installed two scripts from http://sansmicrosoft.blogspot.com/2010/10/pavilion-dm4-1160-erratic-touchpad.html . They didn't do anything I couldn't already do, and they did not make it possible for me to right click. :(

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• How to stop reducing life? [closed]

  - by SystemNetworks

  CODE Input input = gc.getInput(); int xpos = Mouse.getX(); int ypos = Mouse.getY(); emu = "Enemy Life : " + enemyLife; Life = "Your Life Is" + life; Mousepos = "X:" + xpos + "Y:" + ypos; //test test1 = "Test INT" + test1int; if(!repeatStop) { //if this button is press, the damage will add up. When //pressed fight, it would start reducing the enemy health. if(input.isKeyPressed(Input.KEY_1)) { test1int += 1; } } if((xpos>1007 &xpos<1297)&&(ypos>881 && ypos<971)) { //Fight button if(Mouse.isButtonDown(0)){ finishTurn=true; } } //fight has started if(finishTurn==true) { //this would reduce the enemy life if(floodControl1==false) { enemyLife-=test1int; } //PROBLEM: Does not stop reducing! //the below code was not successful. It did not stop it // from reducing further. if(test1int>10) { floodControl1=true; } } QUESTION: Ok now, this is what is does. When I press the key, 1, it adds up the damage to the enemy. When I press fight, It will then start to reduce the enemy's health. Now my problem is, it kept on reducing and deducting it until negative! How do I deduct it to my desired damage (My desired damage is the one when press key 1)?

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• Touchpad issues on HP Pavilion dm4 (can't right click)

  - by Habstinat

  Can anyone help me with my touchpad issues? I have a HP Pavilion dm4 and it has two areas on the bottom of the touchpad to designate right and left clicks. This mostly doesn't work on Ubuntu in the fact that it recognizes any taps on either tap zone as a left click. Instead, I have it set so if I tap anywhere on the pad it makes a left click. There should be, and there are, many ways in the mouse configuration window to simulate a right click using only a touchpad. None of these work. Changing mouse orientation doesn't do anything, "dwell click" also does nothing, and, the oddest part of this problem, whenever I try to turn "Simulated Secondary Click" off (it doesn't work anyways, but just to try to toggle it), the entire theme of my desktop changes to a gray Windows '95ey look. The only way to get rid of this is to close and reopen the mouse preferences window. My computer is fairly new and the Ubuntu installation is less than a day old. I didn't do anything that I think could cause this. The problem is that I can't right click. Help, please?s that I can't right click. Help, please? Afterword: I installed two scripts from http://sansmicrosoft.blogspot.com/2010/10/pavilion-dm4-1160-erratic-touchpad.html . They didn't do anything I couldn't already do, and they did not make it possible for me to right click. :(

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• Ubuntu 12.04 fresh install wont boot up

  - by user147220

  im running ubuntu 12.04 and it refuses to boot up. the screen will come on for a second, the mosue will appear, then itll go black again all inside about 3 seconds. i let it just do that for a while and eventually a window popped up saying i had a display issue. I didn't have a mouse but there was a button saying "ok" at the bottom that i couldnt click on. i hit enter, got through that screen, now im looking at another that says "What would you like to do?" - run in low-graphics mode for just one session - reconfigure graphics - troubleshoot the error - exit to console login then two buttons, cancel, and ok. I dont have a mouse and its not letting me navigate between these options with tab. firstly, if i make it through these windows will it get me into the computer so i can try and fix whats going on? also, whats going on here? also, how can i click on these buttons without the use of tab or a mouse?

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• Selecting objects on a 2D map

  - by Dave

  I have a object selection function by checking the mouse click and getting the relevant object. How ever there is a rare situation where if one object is partially behind the other then both objects are in the given area so im wondering how I can make the game know which one was selected, as currently my method does not know. This is my function that works it out: function getobj(e){ mx = e.pageX - curleft; //mouse click x my = e.pageY - curtop; //mouse click y function searchSprites(sprites, x, y) { var matches = [], i = 0, data = null; for (i = 0; i < spritea.length; ++i) { data = spritea[i].data; if (x > data[0] && y > data[1] && x < data[2] && y < data[3]) { var imageData = ctx2.getImageData(x, y, 1, 1); if(imageData.data[3] !== 0){ return [spritea[i].id]; i = spritea.length; } } } } res = searchSprites(spritea, mx, my); bid = res[0]; if(bid === '1'){ alert('You selected the skyscraper in front!'); }else if(bid === '3'){ alert('You selected the skyscraper behind!'); } } Image of the map: It keeps telling me I clicked the skyscraper behind which is not necessarily what the user is trying to do. How can I improve the accuracy of this ?

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• Why does my system slow down or freeze when there is heavy disk activity?

  - by user72270

  Im a first-time user to Ubuntu-12.04 with WUBI installation. My NoteBook Information : Dell vostro 3450 : i5 2410m, 3 gb ram, intel hd3000, amd 6630m hybrid. Surfing and playing games works flawlessly, however, I'm having huge problems when installing applications and generally copying and moving files. When doing so, system is significantly slower and freezes quite often (Firefox gets bluish, sometimes even black n white). I would say that Ubuntu allocates too much resources on file transfers and installing, but even these tasks are very slow. Here is very specific example : today, i tried to move 6 GB file from win 7 installation. It was good at first, i jumped to firefox but after a while firefox started to randomly turn bluish and mouse was randomly stopping working. It was gradually worse and worse and it got to a point when firefox black n whited and mouse wasn't working at all. I raged and went for some meal, when i got back screen was black. It probably unlogged me due to inactivity, when i pushed random button to bring screen to life i had to wait few minutes to let it show me only my screen background. No log in screen, just background and working mouse. NoteBook fan was working at 100 % so I assumed that file transfer was going on and I left it to work. Nothing then changed for a full hour so I hard rebooted it. File transfer unsuccessful, It transfered hardly 2 gigs. Is this normal ? What to do in these situations ? It didn't let me load system manager and not even terminal. Thanks.

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• Screen refresh/display problem in Xubuntu 14.04

  - by user286328

  I have just installed Xubuntu 14.04 as a dual boot on a desk top (Pentium R 4 CPU, 2.66 GHZ, 2G RAM) running XP home edition. In some situations when in Xubuntu I am having what seem to be screen refresh problems. When I open File Manager or Settings Manager the text names of various apps display but most of the icons do not. Moving the mouse over an app name generally causes the icon to appear, but it often vanishes once the mouse pointer is moved. This issue occurs irrespective of the view setting. Icons appear fine in the menu that comes up when I right click in the desktop, and in the menu that comes up when I click the mouse icon at top left. What I suspect is a related issue. In Abiword text sometimes fades, disappears or does not display immediately when I type, or text of the whole document fades. It then comes back or darkens if I left click a few times on the text. If I scroll through a document the text often fades and may remain faded until I left click a few times.

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• Visually recognise active window

  - by mcaleaa

  Ubuntu 13.04 I work with two monitors, usually with lots of different windows open. I don't like to use the mouse, so swap between applications using alt-tab usually. The problem comes when I want to type something into an application. I need the active application to immediately obvious, usually so that I can tell which monitor to look at next. With default ubuntu (with appearance = ambiance), the only real visual indication of a window being active is that the header bar of the application is in a lighter font color. This is too subtle for me, so I find myself alt-tabbing and moving my mouse too much when switching applications, then clicking around with the mouse to give a particular window the focus. I want my switching to be more accurate, and for that I think I need better feedback on what window has the focus. This needs to be more obvious than it is now. I looked at the high contrast appearance, and it helps somewhat, but the inconsistency in the icon sets is far too distracting. I think what I need is a something like a bright border right around the window, or something like that, to make the active window really stand out. Or, maybe to have the non-active windows fade to the background a bit. I would appreciate tips on how others overcome this problem, to make the active window stand out visually from the other windows. Thank you!

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• Help with selecting objects on a map

  - by Dave

  I have a object selection function by checking the mouse click and getting the relevant object. How ever there is a rare situation where if one object is partially behind the other then both objects are in the given area so im wondering how i can make the game know which one was selected, as currently my method does not know. This is my function that works it out: function getobj(e){ mx = e.pageX - curleft; //mouse click x my = e.pageY - curtop; //mouse click y function searchSprites(sprites, x, y) { var matches = [], i = 0, data = null; for (i = 0; i < spritea.length; ++i) { data = spritea[i].data; if (x > data[0] && y > data[1] && x < data[2] && y < data[3]) { var imageData = ctx2.getImageData(x, y, 1, 1); if(imageData.data[3] !== 0){ return [spritea[i].id]; i = spritea.length; } } } } res = searchSprites(spritea, mx, my); bid = res[0]; if(bid === '1'){ alert('You selected the skyscraper in front!'); }else if(bid === '3'){ alert('You selected the skyscraper behind!'); } } Image of the map: http://i.imgur.com/qcKij.jpg It keeps telling me i clicked the skyscraper behind which is not necessarily what the user is trying to do... how can i improve the accuracy of this ?

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• C# MultiThread Safe Class Design

  - by Robert

  I'm trying to designing a class and I'm having issues with accessing some of the nested fields and I have some concerns with how multithread safe the whole design is. I would like to know if anyone has a better idea of how this should be designed or if any changes that should be made? using System; using System.Collections; namespace SystemClass { public class Program { static void Main(string[] args) { System system = new System(); //Seems like an awkward way to access all the members dynamic deviceInstance = (((DeviceType)((DeviceGroup)system.deviceGroups[0]).deviceTypes[0]).deviceInstances[0]); Boolean checkLocked = deviceInstance.locked; //Seems like this method for accessing fields might have problems with multithreading foreach (DeviceGroup dg in system.deviceGroups) { foreach (DeviceType dt in dg.deviceTypes) { foreach (dynamic di in dt.deviceInstances) { checkLocked = di.locked; } } } } } public class System { public ArrayList deviceGroups = new ArrayList(); public System() { //API called to get names of all the DeviceGroups deviceGroups.Add(new DeviceGroup("Motherboard")); } } public class DeviceGroup { public ArrayList deviceTypes = new ArrayList(); public DeviceGroup() {} public DeviceGroup(string deviceGroupName) { //API called to get names of all the Devicetypes deviceTypes.Add(new DeviceType("Keyboard")); deviceTypes.Add(new DeviceType("Mouse")); } } public class DeviceType { public ArrayList deviceInstances = new ArrayList(); public bool deviceConnected; public DeviceType() {} public DeviceType(string DeviceType) { //API called to get hardwareIDs of all the device instances deviceInstances.Add(new Mouse("0001")); deviceInstances.Add(new Keyboard("0003")); deviceInstances.Add(new Keyboard("0004")); //Start thread CheckConnection that updates deviceConnected periodically } public void CheckConnection() { //API call to check connection and returns true this.deviceConnected = true; } } public class Keyboard { public string hardwareAddress; public bool keypress; public bool deviceConnected; public Keyboard() {} public Keyboard(string hardwareAddress) { this.hardwareAddress = hardwareAddress; //Start thread to update deviceConnected periodically } public void CheckKeyPress() { //if API returns true this.keypress = true; } } public class Mouse { public string hardwareAddress; public bool click; public Mouse() {} public Mouse(string hardwareAddress) { this.hardwareAddress = hardwareAddress; } public void CheckClick() { //if API returns true this.click = true; } } }

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• Raspberry Pi entrance signed backed by Umbraco - Part 1

  - by Chris Houston

  Being experts on all things Umbraco, we jumped at the chance to help our client, QV Offices, with their pressing signage predicament. They needed to display a sign in the entrance to their building and approached us for our advice. Of course it had to be electronic: displaying multiple names of their serviced office clients, meeting room bookings and on-the-pulse promotions. But with a winding Victorian staircase and minimal storage space how could the monitor be run, updated and managed? That’s where we came in…Raspberry PiUmbraco CMSAutomatic updatesAutomated monitor of the signPower saving when the screen is not in useMounting the screenThe screen that has been used is a standard LED low energy Full HD screen and has been mounted on the wall using it's VESA mounting points, as the wall is a stud wall we were able to add an access panel behind the screen to feed through the mains, HDMI and sensor cables.The Raspberry Pi is then tucked away out of sight in the main electrical cupboard which just happens to be next to the sign, we had an electrician add a power point inside this cupboard to allow us to power the screen and the Raspberry Pi.Designing the interface and editing the contentAlthough a room sign was the initial requirement from QV Offices, their medium term goal has always been to add online meeting booking to their website and hence we suggested adding information about the current and next day's meetings to the sign that would be pulled directly from their online booking system.We produced the design and built the web page to fit exactly on a 1920 x 1080 screen (Full HD in Portrait)As you would expect all the information can be edited via an Umbraco CMS, they are able to add floors, rooms, clients and virtual clients as well as add meeting bookings to their meeting diary.How we configured the Raspberry PiAfter receiving a new Raspberry Pi we downloaded the latest release of Raspbian operating system and followed the official guide which shows how to copy the OS onto an SD card from a Mac, we then followed the majority of steps on this useful guide: 10 Things to Do After Buying a Raspberry Pi.Installing ChromiumWe chose to use the Chromium web browser which for those who do not know is the open sourced version of Google Chrome. You can install this from the terminal with the following command:sudo apt-get install chromium-browserInstalling UnclutterWe found this little application which automatically hides the mouse pointer, it is used in the script below and is installed using the following command:sudo apt-get install unclutterAuto start Chromium and disabling the screen saver, power saving and mouseWhen the Raspberry Pi has been installed it will not have a keyboard or mouse and hence if their was a power cut we needed it to always boot and re-loaded Chromium with the correct URL.Our preferred command line text editor is Nano and I have assumed you know how to use this editor or will be able to work it out pretty quickly.So using the following command:sudo nano /etc/xdg/lxsession/LXDE/autostartWe then changed the autostart file content to:@lxpanel --profile LXDE@pcmanfm --desktop --profile LXDE@xscreensaver -no-splash@xset s off@xset -dpms@xset s noblank@chromium --kiosk --incognito http://www.qvoffices.com/someURL@unclutter -idle 0The first few commands turn off the screen saver and power saving, we then open Cromium in Kiosk Mode (full screen with no menu etc) and pass in the URL to use (I have changed the URL in this example) We found a useful blog post with the Cromium command line switches.Finally we also open an application called Unclutter which auto hides the mouse after 0 seconds, so you will never see a mouse on the sign.We also had to edit the following file:sudo nano /etc/lightdm/lightdm.confAnd added the following line under the [SeatDefault] section:xserver-command=X -s 0 dpmsRefreshing the screenWe decided to try and add a scheduled task that would trigger Chromium to reload the page, at some point in the future we might well change this to using Javascript to update the content, but for now this works fine.First we installed the XDOTool which enables you to script Keyboard commands:sudo apt-get install xdotoolWe used the Refreshing Chromium Browser by Shell Script post as a reference and created the following shell script (which we called refreshing.sh):export DISPLAY=":0"WID=$(xdotool search --onlyvisible --class chromium|head -1)xdotool windowactivate ${WID}xdotool key ctrl+F5This selects the correct display and then sends a CTRL + F5 to refresh Chromium.You will need to give this file execute permissions:chmod a=rwx refreshing.shNow we have the script file setup we just need to schedule it to call this script periodically which is done by using Crontab, to edit this you use the following command:crontab -eAnd we added the following:*/5 * * * * DISPLAY=":.0" /home/pi/scripts/refreshing.sh >/home/pi/cronlog.log 2>&1This calls our script every 5 minutes to refresh the display and it logs any errors to the cronlog.log file.SummaryQV Offices now have a richer and more manageable booking system than they did before we started, and a great new sign to boot.How could we make sure that the sign was running smoothly downstairs in a busy office centre? A second post will follow outlining exactly how Vizioz enabled QV Offices to monitor their sign simply and remotely, from the comfort of their desks.

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• Add a Hovering Image Toolbar to Firefox

  - by Asian Angel

  When you work with webpage images in Firefox you normally have to use the Context Menu to do anything with them. The Image Toolbar extension provides an extra toolbar to use when you hover your mouse over webpage images. Note: This extension will not function if you have the NoScript extension installed/enabled unless JavaScript has permission to be active on that page. Before You can see the available “Context Menu” options for working with images here. Not bad but it would be nice if some other convenient options were available as well. Image Toolbar in Action Once you have installed the extension you will be able to view the toolbar whenever you hover your mouse over an image. All of the commands are active by default but you can choose what is available in the options. The toolbar will also appear in the upper left region of the image but can be set to appear relative to the cursor. Note: The default minimum image size for the toolbar to appear over is “260 x 260 pixels” so you will probably want to change it to a much smaller size (see options below). Here is what is available in the Image Toolbar: Save – Choose between being prompted when saving or automatically saving to a specified location Copy – Copies image and image URL so that you can paste the image or URL depending on the app pasted into Print – Provides print preview and printing capabilities Info – Opens a window with “properties information” about the image Folder – Opens browser’s download folder in Windows Explorer The “Save, Copy, Print, & Folder Commands” are all pretty clear in what you can expect from them but what about the “Info Command”? This is what you will see if you use the “Info Command” and expand the window out all the way. Very nice… Options There are quite a few options available for what appears to be such a small toolbar. The first “Tab Area” lets you set up the “Save Scheme” that best suits your personal needs. You can choose which commands are available in the toolbar, decide if you would like text labels visible, and enable small icons if desired. As mentioned above the default image size for the toolbar to appear is “260 x 260 pixels”…we set ours for “10 x 10 pixels”. If you would like the toolbar to appear relative to your mouse cursor as opposed to the upper left corner of the image then you can select for that here. Conclusion If you have been wanting more options for working with webpage images in Firefox then this will make a very useful and convenient addition to your browser. Links Download the Image Toolbar extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Conserve Space in Firefox by Combining ToolbarsShow Alexa Ranking in FirefoxLightweight Extension to Show PageRank in FirefoxSwitch Windows by Hovering the Mouse Over a Window in Windows 7 or VistaQuick Tip: Show PageRank in Firefox while Google Toolbar is Hidden TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Roadkill’s Scan Port scans for open ports Out of 100 Tweeters Out of band Security Update for Internet Explorer 7 Cool Looking Screensavers for Windows SyncToy syncs Files and Folders across Computers on a Network (or partitions on the same drive) If it were only this easy

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• SQLAuthority News – Windows Efficiency Tricks and Tips – Personal Technology Tip

  - by pinaldave

  This is the second post in my series about my favorite Technology Tips, and I wanted to focus on my favorite Microsoft product.  Choosing just one topic to cover was too hard, though.  There are so many interesting things I have to share that I am forced to turn this second installment into a five-part post.  My five favorite Windows tips and tricks. 1) You can open multiple applications using the task bar. With the new Windows 7 taskbar, you can start navigating with just one click.  For example, you can launch Word by clicking on the icon on your taskbar, and if you are using multiple different programs at the same time, you can simply click on the icon to return to Word.  However, what if you need to open another Word document, or begin a new one?  Clicking on the Word icon is just going to bring you back to your original program.  Just click on the Word icon again while holding down the shift key, and you’ll open up a new document. 2) Navigate the screen with the touch of a button – and not your mouse button. Yes, we live in a pampered age.  We have access to amazing technology, and it just gets better every year.  But have you ever found yourself wishing that right when you were in the middle of something, you didn’t have to interrupt your work flow be reaching for your mouse to navigate through the screen?  Yes, we have all been guilty of this pampered wish.  But Windows has delivered!  Now you can move your application window using your arrow keys. Lock the window to the left, right hand screen: Win+left Arrow and Win+right Arrow Maximize & minimize: Win+up arrow and Win+down arrow Minimize all items on screen: Win+M Return to your original folder, or browse through all open windows: Alt+up arrow, Alt+Left Arrow, or Alt+right arrow Close down or reopen all windows: win+home 3) Are you one of the few people who still uses Command Prompt? You know who you are, and you aren’t ashamed to still use this option that so many people have forgotten about it.  You can easily access it by holding down the shift key while RIGHT clicking on any folder. 4) Quickly select multiple files without using your mouse. We all know how to select multiple files or folders by Ctrl-clicking or Shift-clicking multiple items.  But all of us have tried this, and then accidentally released Ctrl, only to lose all our precious work.  Now there is a way to select only the files you want through a check box system.  First, go to Windows Explorer, click Organize, and then “Folder and Search Options.”  Go to the View tab, and under advanced settings, you can find a box that says “Use check boxes to select items.”  Once this has been selected, you will be able to hover your mouse over any file and a check box will appear.  This makes selecting multiple, random files quick and easy. 5) Make more out of remote access. If you work anywhere in the tech field, you are probably the go-to for computer help with friends and family, and you know the usefulness of remote access (ok, some of us use this extensively at work, as well, but we all have friends and family who rely on our skills!).  Often it is necessary to restart a computer, which is impossible in remote access as the computer will not show the shutdown menu.  To force the computer to do your wishes, we return to Command Prompt.  Open Command Prompt and type “shutdown /s” for shutdown, or “shutdown /r” for restart. I hope you will find above five tricks which I use in my daily use very important. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority News, T SQL, Technology Tagged: Personal Technology

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• The busy developers guide to the Kinect SDK Beta

  - by mbcrump

  The Kinect is awesome. From day one, I’ve said this thing has got potential. After playing with several open-source Kinect projects, I am please to announce that Microsoft has released the official SDK beta on 6/16/2011. I’ve created this quick start guide to get you up to speed in no time flat. Let’s begin: What is it? The Kinect for Windows SDK beta is a starter kit for applications developers that includes APIs, sample code, and drivers. This SDK enables the academic research and enthusiast communities to create rich experiences by using Microsoft Xbox 360 Kinect sensor technology on computers running Windows 7. (defined by Microsoft) Links worth checking out: Download Kinect for Windows SDK beta – You can either download a 32 or 64 bit SDK depending on your OS. Readme for Kinect for Windows SDK Beta from Microsoft Research  Programming Guide: Getting Started with the Kinect for Windows SDK Beta Code Walkthroughs of the samples that ship with the Kinect for Windows SDK beta (Found in \Samples Folder) Coding4Fun Kinect Toolkit – Lots of extension methods and controls for WPF and WinForms. Kinect Mouse Cursor – Use your hands to control things like a mouse created by Brian Peek. Kinect Paint – Basically MS Paint but use your hands! Kinect for Windows SDK Quickstarts Installing and Using the Kinect Sensor Getting it installed: After downloading the Kinect SDK Beta, double click the installer to get the ball rolling. Hit the next button a few times and it should complete installing. Once you have everything installed then simply plug in your Kinect device into the USB Port on your computer and hopefully you will get the following screen: Once installed, you are going to want to check out the following folders: C:\Program Files (x86)\Microsoft Research KinectSDK – This contains the actual Kinect Sample Executables along with the documentation as a CHM file. Also check out the C:\Users\Public\Documents\Microsoft Research KinectSDK Samples directory: The main thing to note here is that these folders contain the source code to the applications where you can compile/build them yourself. Audio NUI DEMO Time Let’s get started with some demos. Navigate to the C:\Program Files (x86)\Microsoft Research KinectSDK folder and double click on ShapeGame.exe. Next up is SkeletalViewer.exe (image taken from http://www.i-programmer.info/news/91-hardware/2619-microsoft-launch-kinect-sdk-beta.html as I could not get a good image using SnagIt) At this point, you will have to download Kinect Mouse Cursor – This is really cool because you can use your hands to control the mouse cursor. I actually used this to resize itself. Last up is Kinect Paint – This is very cool, just make sure you read the instructions! MS Paint on steroids! A few tips for getting started building Kinect Applications. It appears WPF is the way to go with building Kinect Applications. You must also use a version of Visual Studio 2010.  Your going to need to reference Microsoft.Research.Kinect.dll when building a Kinect Application. Right click on References and then goto Browse and navigate to C:\Program Files (x86)\Microsoft Research KinectSDK and select Microsoft.Research.Kinect.dll. You are going to want to make sure your project has the Platform target set to x86. The Coding4Fun Kinect Toolkit really makes things easier with extension methods and controls. Just note that this is for WinForms or WPF. Conclusion It looks like we have a lot of fun in store with the Kinect SDK. I’m very excited about the release and have already been thinking about all the applications that I can begin building. It seems that development will be easier now that we have an official SDK and the great work from Coding4Fun. Please subscribe to my blog or follow me on twitter for more information about Kinect, Silverlight and other great technology.  Subscribe to my feed

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• AndEngine; Box2D - high speed body overlapping, prismatic joints

  - by Visher

  I'm trying to make good suspension for my car game, but I'm getting nervous of some problems with it. At the beginning, I've tried to make it out of one prismatic joint/revolute joint per one wheel only, but surprisingly prismatic joint that should only move in Y asix moves also in X axis, if car travels very fast, or even on low speeds if there's setContinuousPhysics = true. This causes wheels to "shift back", moving them away from axle. Now I've tried to add some bodies that will keep it in place: Suspension helper collides with spring only, wheel doesn't collide with spring&helper&vehicle body This is how I create those elements: rect = new Rectangle(1100, 1350, 200, 50, getVertexBufferObjectManager()); rect.setColor(Color.RED); scene.attachChild(rect); //rect.setRotation(90); Rectangle miniRect1 = new Rectangle(1102, 1355, 30, 50, getVertexBufferObjectManager()); miniRect1.setColor(0, 0, 1, 0.5f); miniRect1.setVisible(true); scene.attachChild(miniRect1); Rectangle miniRect2 = new Rectangle(1268, 1355, 30, 50, getVertexBufferObjectManager()); miniRect2.setColor(0, 0, 1, 0.5f); miniRect1.setVisible(true); scene.attachChild(miniRect2); rectBody = PhysicsFactory.createBoxBody( physicsWorld, rect, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); rectBody.setUserData("car"); Body miniRect1Body = PhysicsFactory.createBoxBody( physicsWorld, miniRect1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); miniRect1Body.setUserData("suspension"); Body miniRect2Body = PhysicsFactory.createBoxBody( physicsWorld, miniRect2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 10.0f)); miniRect2Body.setUserData("suspension"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(rect, rectBody, true, true)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(miniRect1, miniRect1Body, true, true)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(miniRect2, miniRect2Body, true, true)); PrismaticJointDef miniRect1JointDef = new PrismaticJointDef(); miniRect1JointDef.initialize(rectBody, miniRect1Body, miniRect1Body.getWorldCenter(), new Vector2(0.0f, 0.3f)); miniRect1JointDef.collideConnected = false; miniRect1JointDef.enableMotor= true; miniRect1JointDef.maxMotorForce = 15; miniRect1JointDef.motorSpeed = 5; miniRect1JointDef.enableLimit = true; physicsWorld.createJoint(miniRect1JointDef); PrismaticJointDef miniRect2JointDef = new PrismaticJointDef(); miniRect2JointDef.initialize(rectBody, miniRect2Body, miniRect2Body.getWorldCenter(), new Vector2(0.0f, 0.3f)); miniRect2JointDef.collideConnected = false; miniRect2JointDef.enableMotor= true; miniRect2JointDef.maxMotorForce = 15; miniRect2JointDef.motorSpeed = 5; miniRect2JointDef.enableLimit = true; physicsWorld.createJoint(miniRect2JointDef); scene.attachChild(karoseriaSprite); Rectangle r1 = new Rectangle(1050, 1300, 52, 150, getVertexBufferObjectManager()); r1.setColor(0, 1, 0, 0.5f); r1.setVisible(true); scene.attachChild(r1); Body r1body = PhysicsFactory.createBoxBody(physicsWorld, r1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.001f, 0.01f)); r1body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r1, r1body, true, true)); WeldJointDef r1jointDef = new WeldJointDef(); r1jointDef.initialize(r1body, rectBody, r1body.getWorldCenter()); physicsWorld.createJoint(r1jointDef); Rectangle r2 = new Rectangle(1132, 1300, 136, 150, getVertexBufferObjectManager()); r2.setColor(0, 1, 0, 0.5f); r2.setVisible(true); scene.attachChild(r2); Body r2body = PhysicsFactory.createBoxBody(physicsWorld, r2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.001f, 0.01f)); r2body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r2, r2body, true, true)); WeldJointDef r2jointDef = new WeldJointDef(); r2jointDef.initialize(r2body, rectBody, r2body.getWorldCenter()); physicsWorld.createJoint(r2jointDef); Rectangle r3 = new Rectangle(1298, 1300, 50, 150, getVertexBufferObjectManager()); r3.setColor(0, 1, 0, 0.5f); r3.setVisible(true); scene.attachChild(r3); Body r3body = PhysicsFactory.createBoxBody(physicsWorld, r3, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(1f, 0.01f, 0.01f)); r3body.setUserData("suspensionHelper"); physicsWorld.registerPhysicsConnector(new PhysicsConnector(r3, r3body, true, true)); WeldJointDef r3jointDef = new WeldJointDef(); r3jointDef.initialize(r3body, rectBody, r3body.getWorldCenter()); physicsWorld.createJoint(r3jointDef); MouseJointDef md = new MouseJointDef(); Sprite wheel1 = new Sprite( miniRect1.getX()+miniRect1.getWidth()/2-wheelTexture.getWidth()/2, miniRect1.getY()+miniRect1.getHeight()-wheelTexture.getHeight()/2, wheelTexture, engine.getVertexBufferObjectManager()); scene.attachChild(wheel1); Body wheel1body = PhysicsFactory.createCircleBody( physicsWorld, wheel1, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 5.0f)); wheel1body.setUserData("wheel"); Shape wheel1shape = wheel1body.getFixtureList().get(0).getShape(); wheel1shape.setRadius(wheel1shape.getRadius()*(3.0f/4.0f)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(wheel1, wheel1body, true, true)); Sprite wheel2 = new Sprite( miniRect2.getX()+miniRect2.getWidth()/2-wheelTexture.getWidth()/2, miniRect2.getY()+miniRect2.getHeight()-wheelTexture.getHeight()/2, wheelTexture, engine.getVertexBufferObjectManager()); scene.attachChild(wheel2); Body wheel2body = PhysicsFactory.createCircleBody( physicsWorld, wheel2, BodyDef.BodyType.DynamicBody, PhysicsFactory.createFixtureDef(10.0f, 0.01f, 5.0f)); wheel2body.setUserData("wheel"); Shape wheel2shape = wheel2body.getFixtureList().get(0).getShape(); wheel2shape.setRadius(wheel2shape.getRadius()*(3.0f/4.0f)); physicsWorld.registerPhysicsConnector(new PhysicsConnector(wheel2, wheel2body, true, true)); RevoluteJointDef frontWheelRevoluteJointDef = new RevoluteJointDef(); frontWheelRevoluteJointDef.initialize(wheel1body, miniRect1Body, wheel1body.getWorldCenter()); frontWheelRevoluteJointDef.collideConnected = false; RevoluteJointDef rearWheelRevoluteJointDef = new RevoluteJointDef(); rearWheelRevoluteJointDef.initialize(wheel2body, miniRect2Body, wheel2body.getWorldCenter()); rearWheelRevoluteJointDef.collideConnected = false; rearWheelRevoluteJointDef.motorSpeed = 2050; rearWheelRevoluteJointDef.maxMotorTorque= 3580; physicsWorld.createJoint(frontWheelRevoluteJointDef); Joint j = physicsWorld.createJoint(rearWheelRevoluteJointDef); rearWheelRevoluteJoint = (RevoluteJoint)j; r1body.setBullet(true); r2body.setBullet(true); r3body.setBullet(true); miniRect1Body.setBullet(true); miniRect2Body.setBullet(true); rectBody.setBullet(true); at low speeds, it's OK, but on high speed vehicle can even flip around on flat ground.. Is there a way to make this work better?

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