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  • fast scrolling background

    - by Andre
    i want a game that scrolls the background in a similar way to a UItableView. I solved it with a timer that moves the background up and brings another copy of the same picture up if (bg1.center.y <= - self.view.bounds.size.height/2 ) { bg1.center = CGPointMake(bg1.center.x, 690); } if (bg2.center.y <= - self.view.bounds.size.height/2 ) { bg2.center = CGPointMake(bg2.center.x, 690); bg1.center = CGPointMake(bg1.center.x, bg1.center.y - movement); bg2.center = CGPointMake(bg2.center.x, bg2.center.y - movement); But the faster i move the pictures the more problems occur: There are appearing gaps between the backgrounds and they are getting biggiger the faster i move them! movement is defined by the speed of swiping over the screen Any idea to solve that?

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  • unable to calculate textfield values

    - by user1726508
    i am trying to change the input field when users changes the quantity of items in a text field. Here i am iterating my list from my database. Now i have to make invoice for customer. In my code , if i am changing quantity of a single item, then it is effecting all the other items in the list. I want to change only to the specific items,where its quantity has been change. Below code is giving me error. It is changing all the items value on single change of item quantity. my code; <script type="text/javascript"> $(document).ready(function(){ $(function() { $('input[name="quantity"]').change(function() { var unitprice = $('input[name^="unitprice"]').val(); $(this).parents('tr').find('input[name^="price"]').val($(this).val() * unitprice); }); }); }); </script> <tr> <td height="65%" valign="top" width="100%"> <table width="100%" height="100%" border="0" cellpadding="0" cellspacing="0"> <s:iterator value="#session.BOK" status="userStatus"> <tr style="height: 10px;"> <td width="65%" align="left"><s:property value="bookTitile"/></td> <td width="10%" align="left"><s:textfield name="unitprice" value="%{price}" size="4"/></td> <td width="10%" align="center"><s:textfield name="quantity" value="%{quantity}" size="2"/></td> <td width="15%" align="center"><s:textfield name="price" size="6"></s:textfield> </td> </tr> </s:iterator> </table> </td> </tr> output looks like this image...

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  • JNA array structure

    - by Burny
    I want to use a dll (IEC driver) in Java, for that I am using JNA. The problem in pseudo code: start the server allocate new memory for an array (JNA) client connect writing values from an array to the memory sending this array to the client client disconnect new client connect allocate new memory for an array (JNA) - JVM crash (EXCEPTION_ACCESS_VIOLATION) The JVM crash not by primitve data types and if the values will not writing from the array to the memory. the code in c: struct DataAttributeData CrvPtsArrayDAData = {0}; CrvPtsArrayDAData.ucType = DATATYPE_ARRAY; CrvPtsArrayDAData.pvData = XYValDAData; XYValDAData[0].ucType = FLOAT; XYValDAData[0].uiBitLength = sizeof(Float32)*8; XYValDAData[0].pvData = &(inUpdateValue.xVal); XYValDAData[1].ucType = FLOAT; XYValDAData[1].uiBitLength = sizeof(Float32)*8; XYValDAData[1].pvData = &(inUpdateValue.yVal); Send(&CrvPtsArrayDAData, 1); the code in Java: DataAttributeData[] data_array = (DataAttributeData[]) new DataAttributeData() .toArray(d.bitLength); for (DataAttributeData d_temp : data_array) { d_temp.data = new Memory(size / 8); d_temp.type = type_iec; d_temp.bitLength = size; d_temp.write(); } d.data = data_array[0].getPointer(); And then writing values whith this code: for (int i = 0; i < arraySize; i++) { DataAttributeData dataAttr = new DataAttributeData(d.data.share(i * d.size())); dataAttr.read(); dataAttr.data.setFloat(0, f[i]); dataAttr.write(); } the struct in c: struct DataAttributeData{ unsigned char ucType; int iArrayIndex; unsigned int uiBitLength; void * pvData;}; the struct in java: public static class DataAttributeData extends Structure { public DataAttributeData(Pointer p) { // TODO Auto-generated constructor stub super(p); } public DataAttributeData() { // TODO Auto-generated constructor stub super(); } public byte type; public int iArrayIndex; public int bitLength; public Pointer data; @Override protected List<String> getFieldOrder() { // TODO Auto-generated method stub return Arrays.asList(new String[] { "type", "iArrayIndex", "bitLength", "data" }); } } Can anybody help me?

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  • When using DrawText, what does TextFormatFlags.Internal (a.k.a. DT_INTERNAL) do?

    - by Daniel Stutzbach
    When using TextRenderer.DrawText(), what does setting the TextFormatFlags.Internal flag actually do? Equivalently, what does setting the DT_INTERNAL flag to Win32's DrawTextEx() function do? More to the point, when should I set that flag and when should I not set it? The documentation says: "Uses the system font to calculate text metrics", but I'm not entirely sure what that means. I've done some limited testing and setting the flag seems to change how the font is rendered when using a small font size, but doesn't seem to make a difference when using a large font size.

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  • How to save optimized png images with java's ImageIO?

    - by Christoph
    I am generating lots of images in java and saving them through the ImageIO.write method like this: final BufferedImage img = createSomeImage(); ImageIO.write( img, "png", new File( "/some/file.png" ); I was happy with the results until Google's firefox addon 'Page Speed' told me that i can save up to 60% of the size if i optimize the images. The images are QR codes, their size is around 900B each and the firefox-plugin optimized versions are around 300B. I'd like to save such optimized 300B Images directly from java. So here my question again: How to save optimized png images with java's ImageIO?

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  • How do you make your Java application memory efficient?

    - by Boune
    How do you optimize the heap size usage of an application that has a lot (millions) of long-lived objects? (big cache, loading lots of records from a db) Use the right data type Avoid java.lang.String to represent other data types Avoid duplicated objects Use enums if the values are known in advance Use object pools String.intern() (good idea?) Load/keep only the objects you need I am looking for general programming or Java specific answers. No funky compiler switch. Edit: Optimize the memory representation of a POJO that can appear millions of times in the heap. Use cases Load a huge csv file in memory (converted into POJOs) Use hibernate to retrieve million of records from a database Resume of answers: Use flyweight pattern Copy on write Instead of loading 10M objects with 3 properties, is it more efficient to have 3 arrays (or other data structure) of size 10M? (Could be a pain to manipulate data but if you are really short on memory...)

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  • How to get details like PHP's stat() but using (raw) FTP (CURL)?

    - by Christian Sciberras
    Hello all! I'm new here. I've got a question related to PHP, FTP and CURL. I need to emulate PHP's stat() with CURL FTP. I already know that it may take more than one command to do it. Here's what I've got so far (PHP/STAT ... FTP/CURL): dev ino mode ... LIST * nlink uid ... LIST * gid ... LIST * rdev size ... SIZE (or better still, use from LIST) atime mtime ... MDTM ctime blksize blocks *How is FTP LIST used and parsed (preferably on a single file)? What I need most are the values for atime and ctime, there rest is to be filled for the sake of having full functionality. My end goal is to have a class for proper FTP access with streamWrapper functionality (so as to bypass allow_url_fopen). Cheers!

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  • Android use of an string array on another method

    - by spagi
    Hi all. Im trying to make an activity that has a multiple choice dialog after you push a button. In there you select from a list of things. But these things are received from a web method before the dialog appears. So I create a string array after I receive them inside the onCreate to initialise it there with the correct size. But my dialog method then cant get the array because propably its out of its scope. My code looks like this @Override protected Dialog onCreateDialog(int id) //Here is where the array is loaded to the multiple select dialog etc @Override public void onCreate(Bundle savedInstanceState) //Here is where i initialise the array and get its contents etc I cant initialise my array when the class starts because I dont know its size yet. This has to do something with the scopes of my variables and I am pretty confused

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  • how to find which button has been clicked in app widgets in android?

    - by chrish
    I want to design simple app widget which has two textview and two button for previous/next. I am getting difficult to handle button click in app widget. Actually my desire is,if user click on previous button i want to show previous value and if user click on Next button i want to show next value from database. How to know which button is clicked? here i register button click listener like this public static class UpdateWidgetService extends IntentService { public UpdateWidgetService() { super("UpdateWidgetService"); } @Override protected void onHandleIntent(Intent intent) { AppWidgetManager appWidgetManager = AppWidgetManager .getInstance(this); int incomingAppWidgetId = intent.getIntExtra(EXTRA_APPWIDGET_ID, INVALID_APPWIDGET_ID); if (incomingAppWidgetId != INVALID_APPWIDGET_ID) { updateOneAppWidget(appWidgetManager, incomingAppWidgetId); } } private void updateOneAppWidget(AppWidgetManager appWidgetManager, int appWidgetId) { DatabaseManager dbManager = new DatabaseManager(this); dbManager.open(); String contactNumber, date, status, message; ArrayList<QueuedMessage> listOfQuedMessage = (ArrayList<QueuedMessage>) dbManager .fetchContactNumber(); if (listOfQuedMessage.size() == 0) Log.i("Db", "null"); else{ date = dbManager.fetchDate(); message = dbManager.fetchMessage(); status = dbManager.fetchStatus(); dbManager.closeDatabase(); RemoteViews views = new RemoteViews(this.getPackageName(), R.layout.schdulesms_appwidget_layout); views.setTextViewText(R.id.to_appwidget_saved_data, listOfQuedMessage.get(count).contacNumber); views.setTextViewText(R.id.date_appwidget_saved_data, date); views.setTextViewText(R.id.status_appwidget_saved, status); views.setTextViewText(R.id.message_appwidgset_saved_data, message); **//here i want do** if(button1){ btnNxtClick(views, appWidgetId,listOfQuedMessage.size()); }else{ btPrevClick(views, appWidgetId, listOfQuedMessage.size()); } appWidgetManager.updateAppWidget(appWidgetId, views); } } private void btnNxtClick(RemoteViews views, int appWidgetId,int sizeOfList) { Intent btnNextIntent = new Intent(this, this.getClass()); btnNextIntent.putExtra(EXTRA_APPWIDGET_ID, appWidgetId); PendingIntent btnNextPendingIntent = PendingIntent.getService(this, 0, btnNextIntent, PendingIntent.FLAG_UPDATE_CURRENT); views.setOnClickPendingIntent(R.id.btnNext, btnNextPendingIntent); } private void btPrevClick(RemoteViews views, int appWidgetId,int sizeOfList) { Intent btnNextIntent = new Intent(this, this.getClass()); btnNextIntent.putExtra(EXTRA_APPWIDGET_ID, appWidgetId); PendingIntent btnNextPendingIntent = PendingIntent.getService(this, 0, btnNextIntent, PendingIntent.FLAG_UPDATE_CURRENT); views.setOnClickPendingIntent(R.id.btnPrev, btnNextPendingIntent); } } can anyone help me out from this problem?? thanks

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  • Jscrollpane causese text to disappear on internet explorer

    - by Crippletoe
    Hello all, in my current site, i am using the new Jscrollpane in order to generate a scrollbar for a menu (not my descision but the designer's descision so i dont wanna get into how 90's that all looks like..). my menu is based on a <UL> the <li> elements inside it have the attribute "text-align: right;". my problem that on IE alone the menu text doesnt show when i apply the ScrollPane to the menu. when i delete the ScrollPane function from my code- the menu re-appears. i checked the page with "microsoft Expression" DOM inspector in order to examine how IE sees my code and i can see the <li> elements there, only the text inside them is missing. when i disable the "text-align: right;" for the <li> in my CSS, the text shows again. i suspect this has something to do with the jScrollPane's containing which is relatively aligned but i cannot be sure.. can anyone suggest some fix for this problem? a link to a page where you can see the problem is here: http://kaplanoland.com/index.php?option=com_content&view=article&id=2&Itemid=12 the problematic menu is on the right side of the page. on every browser but IE you can see the text. only on IE not. my CSS code for that menu (not including the jScrollPane CSS) is here: div#menu2{ position: absolute; top: 123px; right: 36px; width: 330px; height: 150px; } div#menu2_scroll{ /*the actual scroller*/ height: 150px; } div#menu2 div#menu2_contain{ } div#menu2 li{ text-align: right; } div#menu2 li span{ line-height: 18px; } div#menu2 a:link, div#menu2 a:visited{ color: #808285 ; font-family: Arial, Helvetica, sans-serif ; font-size: 12px ; } div#menu2 a:hover, div#menu2 li#current a{ color: #000000 ; font-family: Arial, Helvetica, sans-serif ; font-size: 12px ; } div#menu2 span.separator{ display: block; padding-top: 12px; padding-bottom: 40px; font-family: Arial, Helvetica, sans-serif; font-size: 12px; font-weight: bold; color: #000000; } div#menu2 span.separator span { padding-top: 12px; border-top-width: 1px; border-top-style: solid; border-top-color: #808285; } thank you all so much.

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  • Help to run it in the background

    - by AlexPolo
    Here's a simple python daemon I can't manage to run as a background process: #!/usr/bin/env python import socket host = '' port = 843 backlog = 5 size = 1024 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind((host,port)) s.listen(backlog) while 1: client, address = s.accept() data = client.recv(size) if data == '<policy-file-request/>\0': client.send('<?xml version="1.0"?><cross-domain-policy><allow-access-from domain="*" to-ports="*"/></cross-domain-policy>') client.close() It's a socket policy file server (you may have heard of the restiction Adope put on socket connection - http://www.adobe.com/devnet/flashplayer/articles/socket_policy_files.html); that works well when gets run like an "ordinary" process - "python that_server.py", - but I get problem to run it in the background. Running like so: "that_server.py &", - does not work.

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  • A program where user enters a string and the program counts the instances of the letters

    - by user1865183
    This is the first C++ program I have ever written and I'm having trouble understanding the order in which operands must be put in. This is for a class, but it looks like I'm not supposed to use the homework tag. Sorry if I'm doing this wrong. This is my input // Get DNA string string st; cout << "Enter the DNA sequence to be analysed: "; cin >> st; This seems to work ok, but I thought I would include it incase this is what I'm doing wrong. This is what I have so far to check that the input is exclusively C,T,A, or G. It runs through the program and simply prints "Please enter a valid sequnce1, please enter a valid sequence2, ... ect. I'm sure I'm doing something very stupid, I just can't figure it out. // Check that the sequence is all C, T, A, G while (i <= st.size()){ if (st[i] != 'c' && st[i] != 'C' && st[i] != 'g' && st[i] != 'G' && st[i] != 't' && st[i] != 'T' && st[i] != 'a' && st[i] != 'A'); cout << "Please enter a valid sequence" << i++; else if (st[i] == c,C,G,t,T,a,A) i++; The second half of my program is to count the number of Cs and Gs in the sequence for (i < st.size() ; i++ ;); for (loop <= st.size() ; loop++;) if (st[loop] == 'c') { count_c++; } else if (st[loop] == C) { count_c++; } else if (st[loop] == g) { count_g++; } else if (st[loop] == G); { count_g++; } cout << "Number of instances of C = " << count_c; cout << "Number of instances of G = " << count_g; It seems like it's not looping, it will count 1 of one of the letters. How do I make it loop? I can't seem to put in endl; anywhere without getting an error back, although I know I'll need it somewhere. Any help or tips to point me in the right direction would be greatly appreciated - I've been working on this code for two days (this is embarrassing to admit).

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  • What are the implications of using static const instead of #define?

    - by Simon Elliott
    gcc complains about this: #include <stdio.h> static const int YY = 1024; extern int main(int argc, char*argv[]) { static char x[YY]; } $ gcc -c test1.c test1.c: In function main': test1.c:5: error: storage size of x' isn't constant test1.c:5: error: size of variable `x' is too large Remove the “static” from the definition of x and all is well. I'm not exactly clear what's going on here: surely YY is constant? I had always assumed that the "static const" approach was preferable to "#define". Is there any way of using "static const" in this situation?

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  • How to maipulate the shell output in php

    - by Mirage
    I am trying to write php script which does some shell functions like reporting. So i am starting with diskusage report I want in following format drive path ------------total-size --------free-space Nothing else My script is $output = shell_exec('df -h -T'); echo "<pre>$output</pre>"; and its ouput is like below Filesystem Type Size Used Avail Use% Mounted on /dev/sda6 ext3 92G 6.6G 81G 8% / none devtmpfs 3.9G 216K 3.9G 1% /dev none tmpfs 4.0G 176K 4.0G 1% /dev/shm none tmpfs 4.0G 1.1M 4.0G 1% /var/run none tmpfs 4.0G 0 4.0G 0% /var/lock none tmpfs 4.0G 0 4.0G 0% /lib/init/rw /dev/sdb1 ext3 459G 232G 204G 54% /media/Server /dev/sdb2 fuseblk 466G 254G 212G 55% /media/BACKUPS /dev/sda5 fuseblk 738G 243G 495G 33% /media/virtual_machines How can i convert that ouput into my forn\matted output

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  • Pros and cons of keeping metadata in image thumbnails

    - by SODA
    I am working on optimizing site load speed for a few moderately high traffic sites. Some quick observations show that creating 40 picture thumbnails (e.g. 138x138 JPG @75% quality) results in 700 Kb total size with embedded metadata and 258 Kb with stripped metadata. Which means that roughly 60% of image size is metadata. So what would be pros and cons of removing metadata from thumbnails? Are there any regulations, e.g. you must keep author info / copyright info in the images? Any insights would be appreciated.

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  • why arrayfun does NOT improve my struct array operation performance

    - by HaveF
    here is the input data: % @param Landmarks: % Landmarks should be 1*m struct. % m is the number of training set. % Landmark(i).data is a n*2 matrix old function: function Landmarks=CenterOfGravity(Landmarks) % align center of gravity for i=1 : length(Landmarks) Landmarks(i).data=Landmarks(i).data - ones(size(Landmarks(i).data,1),1)... *mean(Landmarks(i).data); end end new function which use arrayfun: function [Landmarks] = center_to_gravity(Landmarks) Landmarks = arrayfun(@(struct_data)... struct('data', struct_data.data - repmat(mean(struct_data.data), [size(struct_data.data, 1), 1]))... ,Landmarks); end %function center_to_gravity when using profiler, I find the usage of time is NOT what I expected: Function Total Time Self Time* CenterOfGravity 0.011s 0.004 s center_to_gravity 0.029s 0.001 s Can someone tell me why? BTW...I can't add "arrayfun" as a new tag for my reputation.

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  • Append a parameter to a querystring with mod_rewrite

    - by Matt
    Hello, I would like to use mod_rewrite to append a parameter to the end of a querystring. I understand that I can do this using the [QSA] flag. However, I would like the parameter appended ONLY if it does not already exist in the querystring. So, if the querystring was: http://www.mysite.com/script.php?colour=red&size=large I would like the above URL to be re-directed to http://www.mysite.com/script.php?colour=red&size=large&weight=heavy Where weight=heavy is appended to the end of the querystring only if this specific parameter was not there in the first place! If the specific parameter is already in the URL then no redirect is required. Can anybody please suggest code to put in my .htacess file that can do this? Thanks.

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  • document.write Javascript error [ SOLVED]

    - by DevMobile
    Now I'm getting the following error: ';'expected document.write("<script type='text/javascript'>var twitterwind_option = {'isOnlyMe':true,'twitterwind_logo':'','twitterwind_logo_bgcolor':'FFFFFF','twitterwind_logo_color':'333303','followers_color':'000000','followers_bgcolor':'FFFFFF','twitterwind_max_length':'39','twitterwind_username':'table-row','twitterwind_username_color':'333333','twitterwind_username_bgcolor':'FFFFFF','twitterwind_twit':'block','twitterwind_twit_color':'333333','twitterwind_twit_bgcolor':'FFFFFF','twitterwind_twit_link_color':'0084B4','twitterwind_twit_scroll_color':'C0DEED','twitterwind_twit_scroll_bg_color':'FFFFFF','twitterwind_follower':'inherit','twitterwind_follower_bgcolor':'FFFFFF','twitterwind_frame_width':200,'twitterwind_frame_height':480,'twitterwind_frame_border':'false','twitterwind_frame_border_color':'C0DEED','twitterwind_base_font_size':12,'twitterwind_me_font_size':14,'twitterwind_caption_font_size':16,'twitterwind_scroll_height':336,'eusn':'rdK1y36H5sM='}';var twitterwind_url = 'http://www.tweetswind.com/en/twitterwind.php';<\/script><script type='text/javascript' src='http://www.tweetswind.com/en/js/twitterwind.js'><\/script><div style='font-size:12px; text-align:right; width:200px'><a target='_blank' href='http://www.tweetswind.com/en/en/'>TweetsWind: a Twitter widget</a></div>");src='http://www.tweetswind.com/en/js/twitterwind.js'></script><div style='font-size:12px; text-align:right; width:200px'><a target='_blank' href='http://www.tweetswind.com/en/en/'>TweetsWind: a Twitter widget</a></div>");

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  • Crop & Resize Images in Wordpress

    - by Thomas
    I have gone through several plugins and I can't find a plugin that simply resizes and crops images to a specific size when they get uploaded. This is different from simply resizing one side of the image, I need it to resize the smallest side and then crop the largest side so that the image fits in a specific space. WP already does this by default with thumbnails but I need to do this with full-sized images as well. I was going to use: http://wordpress.org/extend/plugins/scissors/ but it doesn't work with my installation. Can anyone think of another plugin that does this? Is there a simple way to enable this behavior for full size images by modifying wordpress?

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  • Uniform distribution of binary values in Matlab

    - by JohnIdol
    I have a requirement for the generation of a given number N of vectors of given size each consistent of a uniform distribution of 0s and 1s. This is what I am doing at the moment, but I noticed that the distribution is strongly peaked at half 1s and half 0s, which is no good for what I am doing: a = randint(1, sizeOfVector, [0 1]); The unifrnd function looks promising for what I need, but I can't manage to understand how to output a binary vector of that size. Is it the case that I can use the unifrnd function (and if so how would be appreciated!) or can is there any other more convenient way to obtain such a set of vectors? Any help appreciated!

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  • What data structure would be the least painful DataTable replacement?

    - by MatthewMartin
    I'm storing a lot of sorted ~10 row 2 column/key value pairs in ASP.NET cache-- they're the data for dropdownlists. Right now they are all DataTables, which isn't very space efficient (the rule of thumb is 10x increase in size when data is strored in a dataset). Old Code DataTable table = dataAccess.GetDataTable(); dropDownList.DataSource = table; Hoped for new Code Unknown data = dataAccess.GetSomethingMoreSpaceEfficient(); dropDownList.DataSource = data; What pre-existing datastructures are similar enough to DataTable that would minimize code breakage and reduce the serialized size when stored in ASP.NET cache?

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  • How to find out the dimensionality of print paper in javascript

    - by tzador
    I am generating reports in HTML formats, and want to print them automatically using Qt (qt has a webkit based browser, and one can render its contents to a PDF file). I want to position the elements of the report depending on the target page size. For that i need to access the size of the paper (preferably in pixels). Since i am using webkit, it has all the latest html5 and css3 features. is there some api available to access printed page properties inside javascript. for example, would be nice to write: window.print_paper.width or window.print_paper.height Thank you in advance

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  • Quartz 2D animating text?

    - by coure06
    i have to animate text around a circle. The text will also scale up/down. Whats the best approach to accomplish this? (i am using Quartz 2D) My approach is: -- Calculate point using sin and cos methods. -- Move Pen there and draw text with alpha and size. -- Clear the screen -- Calculate next point using sin and cos methods. -- Move pen there and draw text with alpha and size. -- clear the screen so on... any better way?

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