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• XNA Class Design with Structs as Properties and issues because they are value types and not referenc

  - by Nate Bross

  I'm wondering how you'd recommend designin a class, given the fact that XNA Framework uses Struct all over the place? For example, a spite class, which may require a Vector2 and a Rectangle (both defined as Struct) to be accessed outside of the class. The issue come in when you try to write code like this: class Item { public Vetor2 Position {get; set;} public Item() { Position = new Vector2(5,5); } } Item i = new Item(); i.Positon.X = 20; // fails with error 'Cannot modify the return value of Item because it is not a variable.' // you must write code like this var pos = i.Position; pos.X++; i.Position = pos; The second option compiles and works, but it is just butt ugly. Is there a better way?

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• Image in absolute DIV is not positioning from containing DIV

  - by Jaime Schuster

  I have a DIV with position:absolute inside another with position:relative. But the inside DIV is flowing out of the other and positioning it self based on the browser not the containing DIV. Any ideas why this is happening? You can see the problem here: https://www.luxedesignerhandbags.com/Articles.asp?ID=239 Look at the botton right "Get Cash for your handbags" The image is in div id="sell_bag" and that is contained in div id="wrapper" The css is as follows: #wrapper { position:inherit; font-family: Quicksand, Arial, Helvetica, sans-serif; width: 980px; left: 24px; margin: auto; } #sell_bag { position:absolute; right: 190px; width: 260px; } Any help would be greatly appreciated! Thanks,

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• Need help with video streaming with web-embedded Windows Media Player Component

  - by Ron

  Hello, I need to be able to play a .wmv video in a Windows Media Player component on a web page starting at a particular specified point in the video right away. I can embed the component and play the video. The problem is that even if I specify the location with The PARAM “currentPosition”, the video starts to play from the beginning. This appears to be because the requested position in the video has not been loaded yet. If I wait until the video has been loaded to the requested position and refresh the page, it will then play from the requested position. It seems that the video must start loading from the requested position in order to start right away. If this is the correct way, how would I go about doing it? If it is not, what is the proper way to do it? It can obviously be done, because YouTube’s players work like this. Thank you,

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• Java - How to declare table[i][j] elements as instance variables?

  - by JDelage

  All, I am trying to code a Connect4 game. For this, I have created a P4Game class and a P4Board class which represents the i X j dimensions of the Connect4 board. In P4Game, I have the following: public class P4Game{ //INSTANCE VARIABLES private int nbLines; private int nbColumns; private P4Board [][] position; //CONSTRUCTOR public P4Game(int nbLines, int nbColumns){ this.nbColumns = nbColumns; this.nbLines = nbLines; P4Board [][] position = new P4Board [nbLines][nbColumns]; //Creates the table to receive the instances of the P4Board object.*/ for (int i=0; i<nbLines; i++){ for (int j=0; j<nbColumns; j++){ this.position[i][j] = new P4Board(i,j); //Meant to create each object at (line=i, column=j) } } } This causes a NullPointerException in the nested loops where I mention this.position[i][j]. I reference those objects in other methods of this class so I need them to be instance variables. I suppose the exception is due to the fact that I have not listed the table element position[i][j] as an instance variable at the beginning of the class. my question to people here is (1) is my assumption correct, and if so (2) what would be the syntax to declare instance variables of this form? Thank you all for your help with what I realize is a very basic question. Hopefully it will also benefit other newbies. Cheers, JDelage

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• jQuery's draggable grid

  - by Art

  It looks like that the 'grid' option in the constructor of Draggable is relatively bound to the original coordinates of the element being dragged - so simply put, if you have three draggable divs with their top set respectively to 100, 200, 254 pixels relative to their parent: <div class="parent-div" style="position: relative;"> <div id="div1" class="draggable" style="top: 100px; position: absolute;"></div> <div id="div2" class="draggable" style="top: 200px; position: absolute;"></div> <div id="div3" class="draggable" style="top: 254px; position: absolute;"></div> </div> Adn all of them are getting enabled for dragging with 'grid' set to [1, 100]: draggables = $('.draggable'); $.each(draggables, function(index, elem) { $(elem).draggable({ containment: $('#parent-div'), opacity: 0.7, revert: 'invalid', revertDuration: 300, grid: [1, 100], refreshPositions: true }); }); Problem here is that as soon as you drag div3, say, down, it's top is increased by 100, moving it to 354px instead of being increased by just mere 46px (254 + 46 = 300), which would get it to the next stop in the grid - 300px, if we are looking at the parent-div as a point of reference and "grid holder". I had a look at the draggable sources and it seem to be an in-built flaw - they just do all the calculations relative to the original position of the draggable element. I would like to avoid monkey-patching the code of draggable library and what I am really looking for here is the way how to make the Draggable calculate the grid positions relative to containing parent. However if monkey-patching is unavoidable, I guess I'll have to live with it. Thanks!

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• Center four columns in CSS

  - by Ernest

  Hi everybody, I'm trying to make four columns that are centered on the frontpage. I would like it to look like this example: http://www.clutterpad.com/ My code looks like this: #bottom-container {width:100%;height:250px;position:relative;} #bottom-mid {background-color:white;} #bottom-left, #bottom-mid, #bottom-right {height:250px;} #bottom-left, #bottom-right {width:50%;float:left;} #bottom-left {background-color:white;position:absolute;top:0px;left:0px;} #bottom-right {background-color:white;position:absolute;top:0px;left:50%;} #bottom-mid {position:relative;margin:0px auto; width:1000px;z-index:2;} #column-container {width:100%; margin:20px auto;} .column {width:200px;float:left;font-size:10pt;font-family:Arial;margin:20px 10px;} But it's not working out. How should I code it to look like the example I mentioned before?

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• Navigating through code with keyboard shortcuts

  - by MarceloRamires

  I'm starting to feel the need to run fastly through code with keyboard shortcuts, to arrive faster where I want to make any changes (avoiding use of mouse or long times holding [up], [left], [right] and [down]). I'm already using some: [home] - first position in current line [end] - last position in current line [ctrl] + [home] - first line of the entire code [ctrl] + [end] - last line of the entire code [pageup] - same vertical position, one screen above [pagedown] - same vertical position, one screen below [ctrl] + [pageup] - first line in current screen [ctrl] + [end] - last line in current screen [ctrl] + [left/right] - skipping word per word What have you got ? I use Visual Studio. (but I'm open to any answer, as I maybe can use others soon) obs: I've searched through stackoverflow and didn't find a nice question with this content, nor a list of keyboard code searching. If it's repeated, I'm sorry for not finding it, I'm here in my best intentions. This question is NOT about any shortcuts, and not only about visual studio, it's about running through code with shortcuts. Answers that suit the question so far: [Ctrl] + [-] - jumps to last cursor position [Ctrl] + [F3] - Jumps to next occurance of the word the curson is in [Shift] + [F3] - Same as the above, backwards. [F12] - Goes to definition of method/variable the cursor is in [Ctrl] + [ ] ] - Jumps to matching brace and select I'll ad more as there are answers.

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• Android Multiple objects in SimpleAdapter

  - by Adam Sherratt

  I have a need (unless you can think of a better way) of passing multiple objects to a custom list adapter. I know that I'm barking up the wrong tree here, and would appreciate someone setting me on the right course! Thanks playlistadapter = new MyPlaylistAdapter(MyApplication.getAppContext(), songsList, retained_songsList, folderMode, R.layout.file_view, new String[] { "songTitle","songAlbum", "songPath" }, new int[] { R.id.checkTextView, R.id.text2, R.id.text3 }); And my adapter class: public class MyPlaylistAdapter extends SimpleAdapter{ private ArrayList <Song> songsList = new ArrayList<Song>(); private ArrayList <Song> retained_songsList = new ArrayList<Song>(); private ArrayList<Song> playlistcheck = new ArrayList<Song>(); private String folderMode; private String TAG = "AndroidMediaCenter"; public MyPlaylistAdapter(Context context,List<Song> SongsList, List<Song> Retained_songsList, String FolderMode,int resource, String[] from, int[] to) { super(context, null, resource, from, to); songsList.clear(); songsList.addAll(SongsList); Log.i(TAG, "MyPlayListAdapter Songslist = " + songsList.size()); retained_songsList.clear(); retained_songsList.addAll(Retained_songsList); folderMode = FolderMode; } public View getView(int position, View convertView, ViewGroup parent) { //PlayListViewHolder holder; CheckedTextView checkTextView; TextView text2; TextView text3; if (convertView == null) { LayoutInflater inflater = (LayoutInflater) MyApplication.getAppContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE); //LayoutInflater inflater=getLayoutInflater(); convertView=inflater.inflate(R.layout.file_view, parent, false); //convertView.setBackgroundColor(0xFF00FF00 ); //holder = new PlayListViewHolder(); checkTextView = (CheckedTextView) convertView.findViewById(R.id.checkTextView); text2 = (TextView) convertView.findViewById(R.id.text2); text3 = (TextView) convertView.findViewById(R.id.text3); //convertView.setTag(holder); } else { //holder = (PlayListViewHolder) convertView.getTag(); } //put something into textviews String tracks = null; String tracks_Details = null; String trackspath = null; tracks = songsList.get(position).getSongTitle(); tracks_Details = songsList.get(position).getAlbum() + " (" + songsList.get(position).getArtist() + ")"; trackspath = songsList.get(position).getSongPath(); checkTextView = (CheckedTextView) convertView.findViewById(R.id.checkTextView); text2 = (TextView) convertView.findViewById(R.id.text2); text3 = (TextView) convertView.findViewById(R.id.text3); checkTextView.setText(tracks); if(folderMode.equals("Playlists")){ checkTextView.setBackgroundColor(Color.GREEN); checkTextView.setChecked(false); try { int listsize_rs = retained_songsList.size(); for (int j = 0; j<listsize_rs;j++){ if((retained_songsList.get(j).getSongPath()).equals(songsList.get(position).getSongPath())){ checkTextView.setBackgroundColor(Color.TRANSPARENT); //Need to check here whether the checkedtextview is ticked or not checkTextView.setChecked(true); playlistcheck.add(songsList.get(position)); break; } } } catch (Exception e) { e.printStackTrace(); } }else { //Need to check here whether the checkedtextview is ticked or not try { if (songsList.get(position).getSongCheckedStatus()==true){ checkTextView.setChecked(true); }else{ checkTextView.setChecked(false); } } catch (Exception e) { e.printStackTrace(); } } text2.setText(tracks_Details); text3.setText(trackspath); Log.i(TAG, "MyPlayListAdapter Songslist = " + songsList.size()); return convertView; } } However, this doesn't inflate, throwing the following errors: 10-26 23:11:09.464: E/AndroidRuntime(2826): FATAL EXCEPTION: main 10-26 23:11:09.464: E/AndroidRuntime(2826): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.GetMusicComplete flg=0x10 } in com.Nmidia.AMC.MusicActivity$18@414c5770 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:765) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Handler.handleCallback(Handler.java:615) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Handler.dispatchMessage(Handler.java:92) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.os.Looper.loop(Looper.java:137) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.ActivityThread.main(ActivityThread.java:4745) 10-26 23:11:09.464: E/AndroidRuntime(2826): at java.lang.reflect.Method.invokeNative(Native Method) 10-26 23:11:09.464: E/AndroidRuntime(2826): at java.lang.reflect.Method.invoke(Method.java:511) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) 10-26 23:11:09.464: E/AndroidRuntime(2826): at dalvik.system.NativeStart.main(Native Method) 10-26 23:11:09.464: E/AndroidRuntime(2826): Caused by: java.lang.NullPointerException 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.widget.SimpleAdapter.getCount(SimpleAdapter.java:93) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.widget.ListView.setAdapter(ListView.java:460) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.Nmidia.AMC.MusicActivity.setFilterMusic(MusicActivity.java:1230) 10-26 23:11:09.464: E/AndroidRuntime(2826): at com.Nmidia.AMC.MusicActivity$18.onReceive(MusicActivity.java:996) 10-26 23:11:09.464: E/AndroidRuntime(2826): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:755) 10-26 23:11:09.464: E/AndroidRuntime(2826): ... 9 more

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• javascript get text at mose postion

  - by Vasioky

  How can I get text at mouse position? I have now some like this document.body.onmousemove = function(){ //todo:Get text at mouse position }

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• How do i get the value of the item selected in listview?

  - by user357032

  i thought i would use the position that i had int but when i click on the item in list view nothing happens. Please Help!!!! ListView d = (ListView) findViewById(R.id.apo); ArrayAdapter adapt = ArrayAdapter.createFromResource( this, R.array.algebra, android.R.layout.simple_list_item_1); d.setAdapter(adapt); d.setOnItemClickListener(new OnItemClickListener() { public void onItemClick(AdapterView parent, View view, int position, long id) { if (position == '0'){ Intent intent = new Intent(Algebra.this, Alqv.class); startActivity(intent); } if (position == '2'){ Intent intent1 = new Intent(Algebra.this, qfs.class); startActivity(intent1); } } });

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• Cocos2d - smooth sprite movement in tile map RPG

  - by Lendo92

  I've been working on a 2-D Gameboy style RPG for a while now, and the game logic is mostly all done so I'm starting to try to make things look good. One thing I've noticed is that the walking movement / screen movement is a little bit choppy. Technically, it should work fine, but either it seems to be having some quirks, either due to taking up a lot of processing power or just timing inconsistencies between moving the screen and moving the sprite. To move the sprite, once I know where I want to move it, I call: tempPos.y += 3*theHKMap.tileSize.width/5; id actionMove = [CCMoveTo actionWithDuration:0.1 position:tempPos]; id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(orientOneMove)]; [guy runAction:[CCSequence actions:actionMove, actionMoveDone, nil]]; [self setCenterOfScreen:position]; Then, in orientOneMove, I call: [self.guy setTexture:[[CCTextureCache sharedTextureCache] addImage:@"guysprite07.png"]]; //the walking picture-I change texture back at the end of the movement id actionMove = [CCMoveTo actionWithDuration:0.15 position:self.tempLocation2]; id actionMoveDone = [CCCallFuncN actionWithTarget:self selector:@selector(toggleTouchEnabled)]; [guy runAction:[CCSequence actions:actionMove, actionMoveDone, nil]]; The code for the concurrently running setCenterOfScreen:position method is: id actionMove = [CCMoveTo actionWithDuration:0.25 position:difference]; [self runAction: [CCSequence actions:actionMove, nil, nil]]; So the setCenterOfScreen moves the camera in one clean move while the guy moving is chopped into two actions to animate it (which I believe might be inefficient.) It's hard to tell what is making the movement not perfectly clean from looking at it, but essentially the guy isn't always perfectly in the center of the screen -- during movement, he's often times a pixel or two off for an instant. Any ideas/ solutions?

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• Styling an Input Field

  - by John

  Hello When I try to alter the CSS for the input field named "title" below, which is classed by "submissionfield", the position changes, but the height, length, and font of the field do not change. How could I make the height of the input field "title" 22 px, the length 550 px, and the font Times New Roman? The CSS below does not do it. Thanks in advance, John echo '<form action="http://www...com/.../submit2.php" method="post"> <input type="hidden" value="'.$_SESSION['loginid'].'" name="uid"> <div class="submissiontitle"><label for="title">Story Title:</label></div> <div class="submissionfield"><input name="title" type="title" id="title" maxlength="1000"></div> <div class="urltitle"><label for="url">Link:</label></div> <div class="urlfield"><input name="url" type="url" id="url" maxlength="500"></div> <div class="submissionbutton"><input name="submit" type="submit" value="Submit"></div> </form> '; The CSS: .submissiontitle { position:absolute; width:100px; left:30px; top:200px; text-align: left; margin-bottom:3px; padding:0px; font-family:Arial, Helvetica, sans-serif; font-size: 12px; color:#000000; } .submissionfield { position:absolute; width:550px; left:50px; top:230px; text-align: left; margin-bottom:3px; padding:0px; font-family: "Times New Roman", Times, serif; font-size: 22px; color:#000000; } .urltitle { position:absolute; width:250px; left:30px; top:300px; text-align: left; margin-bottom:3px; padding:0px; font-family:Arial, Helvetica, sans-serif; font-size: 12px; color:#000000; } .urlfield { position:absolute; width:550px; left:30px; top:330px; text-align: left; margin-bottom:3px; padding:0px; font-family:Arial, Helvetica, sans-serif; font-size: 11px; color:#000000; } .submissionbutton { position:absolute; width:250px; left:30px; top:380px; text-align: left; margin-bottom:3px; padding:0px; font-family:Arial, Helvetica, sans-serif; font-size: 11px; color:#000000; } .submittitle { position:absolute; width:250px; left:30px; top:150px; text-align: left; margin-bottom:3px; padding:0px; font-family:Arial, Helvetica, sans-serif; font-size: 12px; color:#000000; }

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• NavigateBackward in Vim?

  - by vexe

  So Ctrl-o works only with jumps and has a history, '' gets you back to your last position regardless of how you ended up there (jumping, navigating, etc) but there's no history for it. What I'm looking for is the best of those two worlds, something like Visual studio's NavigateBackward. Ctrl-o is good but a lot of the times it takes me back to positions I wouldn't expect, jumping is not the only way I navigate... Is there a built-in command/way in vim that does this? if not, is there a plugin for it? if not, I have no problem writing a plugin myself, I know how to set/get the caret position, but I looked at the autocmd-events and couldn't find anything that fires when the caret changes position. How would I go about detecting the 'change' of the caret position? Thanks.

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• Move camera to fit 3D scene

  - by Burre

  Hi there. I'm looking for an algorithm to fit a bounding box inside a viewport (in my case a DirectX scene). I know about algorithms for centering a bounding sphere in a orthographic camera but would need the same for a bounding box and a perspective camera. I have most of the data: I have the up-vector for the camera I have the center point of the bounding box I have the look-at vector (direction and distance) from the camera point to the box center I have projected the points on a plane perpendicular to the camera and retrieved the coefficients describing how much the max/min X and Y coords are within or outside the viewing plane. Problems I have: Center of the bounding box isn't necessarily in the center of the viewport (that is, it's bounding rectangle after projection). Since the field of view "skew" the projection (see http://en.wikipedia.org/wiki/File:Perspective-foreshortening.svg) I cannot simply use the coefficients as a scale factor to move the camera because it will overshoot/undershoot the desired camera position How do I find the camera position so that it fills the viewport as pixel perfect as possible (exception being if the aspect ratio is far from 1.0, it only needs to fill one of the screen axis)? I've tried some other things: Using a bounding sphere and Tangent to find a scale factor to move the camera. This doesn't work well, because, it doesn't take into account the perspective projection, and secondly spheres are bad bounding volumes for my use because I have a lot of flat and long geometries. Iterating calls to the function to get a smaller and smaller error in the camera position. This has worked somewhat, but I can sometimes run into weird edge cases where the camera position overshoots too much and the error factor increases. Also, when doing this I didn't recenter the model based on the position of the bounding rectangle. I couldn't find a solid, robust way to do that reliably. Help please!

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• Moving An Object With Touch

  - by Arman

  for(touch in iPhoneInput.touches) { if(touch.phase == iPhoneTouchPhase.Moved || touch.phase == iPhoneTouchPhase.Began) { transform.position = Camera.main.ScreenToWorldPoint(new Vector3 (touch.position.x, touch.position.y, 10)); } } I have found the above code from tutorial Moving An Object With Touch but its not working when I play game in Unity3D. Can some one please help me.

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• How do I get a button to show on mouseover using jQuery?

  - by sharataka

  I am trying to get a button to appear over an image when there is a mouseover event over the image. I have multiple images on the screen that I would like to have the same functionality. I'm having trouble getting this to work as the button is always present. Any advice on how to get it to work? Below is the rendered html and javascript. javascript <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js"></script> <script src="http://code.jquery.com/jquery.min.js" type="text/javascript"></script> <script type = "text/javascript"> $(document).ready(function() { $('.image').mouseover(function(){ $('.munchbutton').show(); }); }); </script> css div.munchbutton{ position: absolute; bottom: 5px; right: 0px; left: 60px; } div.wrapper{ float:left; /* important */ position:relative; /* important(so we can absolutely position the description div */ padding: 5px; } html <!-- wrapper div --> <div class='wrapper'> <!-- image --> <div class="image" style="position: relative; left: 0; top: 0;"> <a href="/partners/Business/CNNMoney" > <img src="/static/CNNMoney.png" style="position: relative; top: 0; left: 0;"/> </a> <!-- partner munchbutton div --> <div class='munchbutton'> <form method='post'><div style='display:none'><input type='hidden' name='csrfmiddlewaretoken' value='7wq8pRYNCDkXUGRv7eU6qI1BU7RKyoT8' /></div> <input type="hidden" name="channel" id="channel" value="CNNMoney" /> <input type='submit' class = 'add' value='Add to plate'/> </form> </div> <!-- end munchbutton div --> </div> <!-- end image div --> </div> <!-- end wrapper div --> <!-- wrapper div --> <div class='wrapper'> <!-- image --> <div class="image" style="position: relative; left: 0; top: 0;"> <a href="/partners/Business/EconomistMagazine" > <img src="/static/EconomistMagazine.png" style="position: relative; top: 0; left: 0;"/> </a> <!-- partner munchbutton div --> <div class='munchbutton'> <form method='post'><div style='display:none'><input type='hidden' name='csrfmiddlewaretoken' value='7wq8pRYNCDkXUGRv7eU6qI1BU7RKyoT8' /></div> <input type="hidden" name="channel" id="channel" value="EconomistMagazine" /> <input type='submit' class = 'add' value='Add to plate'/> </form> </div> <!-- end munchbutton div --> </div> <!-- end image div --> </div> <!-- end wrapper div -->

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• Question about C# properties

  - by Impz0r

  Hey there, i bumped the other day into a little problem regarding C#'s properties. Let's say i do have this setup: public class Point { public float X; public float Y; } public class Control { protected Point m_Position = new Point(); public Position { get { return m_Position; } set { m_Position = value; } // reorganize internal structure.. reorganize(); } protected reorganize() { // do some stuff } } This is all fine, but when it comes to usage, i could write something like: Control myControl = new Control(); myControl.Position.X = 1.0f; The thing is, my Control class wont recognize that the Position has been changed because set hasn't been called. So i guess my question is, is there a way to make Control aware of any Position changes? Thanks in advance! Mfg Imp

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• ModalPopupExtender doesn't work on IE6 frame layout

  - by Joe

  I'm using a "frame" layout similar to the one in this excellent answer: a div #top at the top of the page, a div#left on the left, and a div #main with the main content. The #top and #left divs contain navigation menus. Now I want to use a popup div using the AjaxControlToolkit ModalPopupExtender inside the content (#main) div. This works fine on IE8 (where #top, #left, #main all have position:fixed), but when I run it on IE6, the modal background only covers the #main div - I need it to cover the whole of the page including the #top and #left navigation divs. Looking at the script for ModalPopupExtender, it appears to be searching up the parent hierarchy until it finds a parent with position relative or absolute. And in the IE6 rendering, the #main div has position:absolute because position:fixed is not supported, which I guess explains what is happening. Any suggestions for the best/easiest way to get this working properly on IE6? Ideally without modifying the ModalPopupExtender code, but I'll do this if I have to and it's the best solution.

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• Another Nim's Game Variant

  - by Terry Smith

  Given N binary sequence Example : given one sequence 101001 means player 0 can only choose a position with 0 element and cut the sequence from that position {1,101,1010} player 1 can only choose a position with 1 element ans cut the sequence from that position {null,10,101000} now player 0 and player 1 take turn cutting the sequence, on each turn they can cut any one non-null sequence, if a player k can't make a move because there's no more k element on any sequence, he lose. Assume both player play optimally, who will win ? I tried to solve this problem with grundy but i'm unable to reduce the sequence to a grundy number because it both player don't have the same option to move. Can anyone give me a hint to solve this problem ?

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• set the height and width of div element equal to img elemet's height and width?

  - by Syom

  i have an img element <img src="some.jpg" style="position:absolute;"> i don't know the height and width of the image, because it loads dinamicaly, but i need to create a div element with position absolute, which must have the same width and height than the image. i.e <div style="position:absolute;height:'img->height';width:'img->width'"> is it possible to do with just css? if no, maybe jquery? Thanks

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• Convert integer to equivalent number of blank spaces.

  - by mike

  I was wondering what the easiest way is to convert an integer to the equivalent number of blank spaces. I need it for the spaces between nodes when printing a binary search tree. I tried this `int position = printNode.getPosition(); String formatter = "%1"+position+"s%2$s\n"; System.out.format(formatter, "", node.element);` But I am getting almost 3 times as many spaces compared to the int value of position. I'm not really sure if I am formatting the string right either. Any suggestions would be great! If it makes it clearer, say position = 6; I want 6 blank spaces printed before my node element.

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• [Android] Show default selection color for custom listview

  - by Diego

  Hello, I have a listview with a custom BaseAdapter. Each row of the listview has a TextView and a CheckBox. The problem is when I click (or touch) any row, the textview foreground becomes gray, instead of the default behavior (background - green, textview foreground - white). Here is the code: row.xml: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" style="@style/layout"> <TextView android:id="@+id/main_lv_item_textView" style="@style/textViewBig" android:layout_alignParentLeft="true"/> <CheckBox android:id="@+id/main_lv_item_checkBox" style="@style/checkBox" android:layout_width="wrap_content" android:layout_alignParentRight="true"/> </RelativeLayout> Custom Adapter: public class CustomAdapter extends BaseAdapter { private List<Profile> profiles; private LayoutInflater inflater; private TextView tvName; private CheckBox cbEnabled; public CustomAdapter(List<Profile> profiles) { this.profiles = profiles; inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); } public int getCount() { return profiles.size(); } public Object getItem(int position) { return profiles.get(position); } public long getItemId(int position) { return position; } public View getView(final int position, View convertView, ViewGroup parent) { View row = inflater.inflate(R.layout.main_lv_item, null); final Profile profile = profiles.get(position); tvName = (TextView) row.findViewById(R.id.main_lv_item_textView); registerForContextMenu(tvName); cbEnabled = (CheckBox) row.findViewById(R.id.main_lv_item_checkBox); tvName.setText(profile.getName()); if (profile.isEnabled()) { cbEnabled.setChecked(true); } tvName.setOnClickListener(new OnClickListener() { public void onClick(View v) { Bundle bundle = new Bundle(); bundle.putString(PROFILE_NAME_KEY, profile.getName()); Intent intent = new Intent(context, GuiProfile.class); intent.putExtras(bundle); startActivity(intent); } }); tvName.setOnLongClickListener(new OnLongClickListener() { public boolean onLongClick(View v) { selectedProfileName = ((TextView) v).getText().toString(); return false; } }); cbEnabled.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (!profile.isEnabled()) { for (Profile profile : profiles) { if (profile.isEnabled()) { profile.setEnabled(false); Database.getInstance().storeProfile(profile); } } } profile.setEnabled(isChecked); Database.getInstance().storeProfile(profile); updateListView(); } }); return row; } } Any help would be appreciated.

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• Passing Extras and screen rotation

  - by Luis A. Florit

  This kind of questions appear periodically. Sorry if this has been covered before, but I'm a newbie and couldn't find the appropriate answer. It deals with the correct implementation of communication between classes and activities. I made a gallery app. It has 3 main activities: the Main one, to search for filenames using a pattern; a Thumb one, that shows all the images that matched the pattern as thumbnails in a gridview, and a Photo activity, that opens a full sized image when you click a thumb in Thumbs. I pass to the Photo activity via an Intent the filenames (an array), and the position (an int) of the clicked thumb in the gridview. This third Photo activity has only one view on it: a TouchImageView, that I adapted for previous/next switching and zooming according to where you shortclick on the image (left, right or middle). Moreover, I added a longclick listener to Photo to show EXIF info. The thing is working, but I am not happy with the implementation... Some things are not right. One of the problems I am experiencing is that, if I click on the right of the image to see the next in the Photo activity, it switches fine (position++), but when rotating the device the original one at position appears. What is happening is that Photo is destroyed when rotating the image, and for some reason it restarts again, without obeying super.onCreate(savedInstanceState), loading again the Extras (the position only changed in Photo, not on the parent activities). I tried with startActivityForResult instead of startActivity, but failed... Of course I can do something contrived to save the position data, but there should be something "conceptual" that I am not understanding about how activities work, and I want to do this right. Can someone please explain me what I am doing wrong, which is the best method to implement what I want, and why? Thanks a lot!!!

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• How to do "map chunks", like terraria or minecraft maps?

  - by O'poil

  Due to performance issues, I have to cut my maps into chunks. I manage the maps in this way: listMap[x][y] = new Tile (x,y); I tried in vain to cut this list for several "chunk" to avoid loading all the map because the fps are not very high with large map. And yet, when I update or Draw I do it with a little tile range. Here is how I proceed: foreach (List<Tile> list in listMap) { foreach (Tile leTile in list) { if ((leTile.Position.X < screenWidth + hero.Pos.X) && (leTile.Position.X > hero.Pos.X - tileSize) && (leTile.Position.Y < screenHeight + hero.Pos.Y) && (leTile.Position.Y > hero.Pos.Y - tileSize) ) { leTile.Draw(spriteBatch, gameTime); } } } (and the same thing, for the update method). So I try to learn with games like minecraft or terraria, and any two manages maps much larger than mine, without the slightest drop of fps. And apparently, they load "chunks". What I would like to understand is how to cut my list in Chunk, and how to display depending on the position of my character. I try many things without success. Thank you in advance for putting me on the right track! Ps : Again, sorry for my English :'( Pps : I'm not an experimented developer ;)

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• DirectX text at (x,y,z)

  - by bobobobo

  In OpenGL, you can actually draw text with an XYZ position, and it will appear at that location, but in a fixed size. If anyone's played MechWarrior 2, they used it there for nav points. The text had a 3d position, but it always appeared a fixed size. The nav point was actually a bit of text at that exact point in space. Other than that the ability to place 3d text was pretty much useless.. you'd always want text to be 2d, righT? I'm finally in a position where I want this feature. I have these points in space that I need to assign text information to, i.e. I need to draw text at a fixed size but with a 3d position. Can this be done from DirectX?

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