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• How can I use the Boost Graph Library to lay out verticies?

  - by Mike

  I'm trying to lay out vertices using the Boost Graph Library. However, I'm running into some compilation issues which I'm unsure about. Am I using the BGL in an improper manner? My code is: PositionVec position_vec(2); PositionMap position(position_vec.begin(), get(vertex_index, g)); int iterations = 100; double width = 100.0; double height = 100.0; minstd_rand gen; rectangle_topology<> topology(gen, 0, 0, 100, 100); fruchterman_reingold_force_directed_layout(g, position, topology); //Compile fails on this line The diagnostics produced by clang++(I've also tried GCC) are: In file included from test.cpp:2: /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:95:3: error: no member named 'dimensions' in 'boost::simple_point<double>' BOOST_STATIC_ASSERT (Point::dimensions == 2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from test.cpp:2: In file included from /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:13: In file included from /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/graph_traits.hpp:15: In file included from /Volumes/Data/mike/Downloads/boost_1_43_0/boost/tuple/tuple.hpp:24: /Volumes/Data/mike/Downloads/boost_1_43_0/boost/static_assert.hpp:118:49: note: instantiated from: sizeof(::boost::STATIC_ASSERTION_FAILURE< BOOST_STATIC_ASSERT_BOOL_CAST( B ) >)>\ ^ In file included from test.cpp:2: /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:95:3: note: instantiated from: BOOST_STATIC_ASSERT (Point::dimensions == 2); ^ ~~~~~~~ /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:95:31: note: instantiated from: BOOST_STATIC_ASSERT (Point::dimensions == 2); ~~~~~~~^ /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:417:19: note: in instantiation of template class 'boost::grid_force_pairs<boost::rectangle_topology<boost::random::linear_congruential<int, 48271, 0, 2147483647, 399268537> >, boost::iterator_property_map<__gnu_cxx::__normal_iterator<boost::simple_point<double> *, std::vector<boost::simple_point<double>, std::allocator<boost::simple_point<double> > > >, boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_name_t, std::basic_string<char>, boost::no_property>, unsigned long>, boost::simple_point<double>, boost::simple_point<double> &> >' requested here make_grid_force_pairs(topology, position, g)), ^ /Volumes/Data/mike/Downloads/boost_1_43_0/boost/graph/fruchterman_reingold.hpp:431:3: note: in instantiation of function template specialization 'boost::fruchterman_reingold_force_directed_layout<boost::rectangle_topology<boost::random::linear_congruential<int, 48271, 0, 2147483647, 399268537> >, boost::adjacency_list<boost::listS, boost::vecS, boost::undirectedS, boost::property<boost::vertex_name_t, std::basic_string<char>, boost::no_property>, boost::no_property, boost::no_property, boost::listS>, boost::iterator_property_map<__gnu_cxx::__normal_iterator<boost::simple_point<double> *, std::vector<boost::simple_point<double>, std::allocator<boost::simple_point<double> > > >, boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_name_t, std::basic_string<char>, boost::no_property>, unsigned long>, boost::simple_point<double>, boost::simple_point<double> &>, boost::square_distance_attractive_force, boost::attractive_force_t, boost::no_property>' requested here fruchterman_reingold_force_directed_layout ^ test.cpp:48:3: note: in instantiation of function template specialization 'boost::fruchterman_reingold_force_directed_layout<boost::rectangle_topology<boost::random::linear_congruential<int, 48271, 0, 2147483647, 399268537> >, boost::adjacency_list<boost::listS, boost::vecS, boost::undirectedS, boost::property<boost::vertex_name_t, std::basic_string<char>, boost::no_property>, boost::no_property, boost::no_property, boost::listS>, boost::iterator_property_map<__gnu_cxx::__normal_iterator<boost::simple_point<double> *, std::vector<boost::simple_point<double>, std::allocator<boost::simple_point<double> > > >, boost::vec_adj_list_vertex_id_map<boost::property<boost::vertex_name_t, std::basic_string<char>, boost::no_property>, unsigned long>, boost::simple_point<double>, boost::simple_point<double> &> >' requested here fruchterman_reingold_force_directed_layout(g, position, topology); ^ 1 error generated.

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• Android ListActivity OnListItemClick error with Webviews

  - by Tista

  I've been figuring how to popup a webview all day when a row in my ListActivity is clicked. I can't even show a Toast when it's clicked. Need help I'm still new with Android, a web developer trying to learn. Thanks before. package com.mf.ar; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.Activity; import android.app.AlertDialog; import android.app.ListActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.Window; import android.webkit.WebChromeClient; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.ArrayAdapter; import android.widget.Toast; public class ListViewer extends ListActivity { private String mJSON; private String[] listRows; private String[] listRowsURI; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //setContentView(R.layout.listview); Bundle the = getIntent().getExtras(); this.mJSON = the.getString("JSON"); Log.i("ListViewIntentJSON", this.mJSON); try { JSONObject UrbJSON = new JSONObject(mJSON); JSONObject UrbQuery = UrbJSON.getJSONObject("query"); int rows = UrbQuery.getInt("row"); Log.i("UrbRows", String.format("%d",rows)); JSONArray resultArray = UrbJSON.getJSONArray("result"); this.listRows = new String[rows]; for(int i=0; i<rows; i++) { this.listRows[i] = resultArray.getJSONObject(i). getString("business_name").toString(); } this.listRowsURI = new String[rows]; for(int i=0; i<rows; i++) { this.listRowsURI[i] = resultArray.getJSONObject(i). getString("business_uri_mobile").toString(); } } catch(JSONException e) { e.printStackTrace(); } this.setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, ListViewer.this.listRows)); } @Override protected void onListItemClick(android.widget.ListView l, View v, int position, long id) { super.onListItemClick(l, v, position, id); String theURI = ListViewer.this.listRowsURI[position].toString(); /*String theURI = ListViewer.this.listRowsURI[position].toString(); //String theURI = "http://www.mediafusion.web.id"; WebView webview = new WebView(this); //setContentView(webview); //addContentView(webview, null); webview.getSettings().setJavaScriptEnabled(true); getWindow().requestFeature(Window.FEATURE_PROGRESS); final Activity activity = this; webview.setWebChromeClient(new WebChromeClient() { public void onProgressChanged(WebView view, int progress) { // Activities and WebViews measure progress with different scales. // The progress meter will automatically disappear when we reach 100% activity.setProgress(progress * 1000); } }); webview.setWebViewClient(new WebViewClient() { public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); } }); webview.loadUrl(theURI);*/ Toast.makeText(ListViewer.this.getApplicationContext(), theURI, Toast.LENGTH_SHORT); } }

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• Weird duplicate IE div.

  - by Kyle Sevenoaks

  Here's a weird bug I've found, IE8 is duplicating my div, but only a part of it. How it looks in IE8: And here's how it's meant to look in FF: And the HTML: <div id="roundbigbox"> <p id="pro">Produkter</p> <table id="cart"> <div id="titles"> <div id="thinlinecopy"></div> <div id="varekodetext"> <p>Varekode</p> </div> <div id="produkttext"> <p>Produkt</p> </div> <div id="pristext"> <p>Pris</p> </div> <div id="antalltext"> <p>Antall</p> </div> <div id="pristotaltext"> <p>Pris total</p> </div> <div id="sletttext"> <p>Slett</p></div> <div id="thinline"></div> </div> ...content... <div class="delete"> <a id="slett" href="/order/delete/1329?return=" title="Slett"><!--Slett--></a> </div> </div> CSS for FF: d iv #roundbigbox { background-image:url(../../upload/EW_p_og_L.png); background-position:top center; background-repeat:no-repeat; padding:5px; padding-top:10px; padding-bottom:0px; width:760px; height:1%; border-width:1px; border-color:#dddddd; border-radius:10px; -moz-border-radius:10px; -webkit-border-radius:10px; z-index:1; position:relative; overflow:hidden; margin:0; margin-bottom:10px; } CSS for IE: div #roundbigbox { background-image:url(../../upload/EW_p_og_L.png); background-position:top center; background-repeat:no-repeat; padding:5px; padding-right:50px; padding-top:10px; padding-bottom:-20px; width:760px; height:1%; border-width:1px; border-color:#dddddd; z-index:1; position:relative; overflow:hidden; margin:0; margin-bottom:10px; } What could cause such a weird bug? It's not duplicated in the HTML. I am stumped! Thanks for any responses.

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• ( height 100% ) plus (2-column css)

  - by denja

  Hi! I need a 2-column interface to stretch 100% height the page. PS: If the contents is too long, the scroll bar should appear. it After this question is solved, I'll try to add a sticky footer to the interface. I've really tried hard to find the answer by myself... Thanks if you have any idea here's the code <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-GB"> <head> <title>2 Column CSS Demo - Equal Height Columns with Cross-Browser CSS</title> <style media="screen" type="text/css"> /* <!-- */ *{ margin:0; padding:0; } html { background-color: #ccc; height: 100%; } body { background-color: white; width: 600px; margin: 0 auto; height:100%; position: relative; border-left: 1px solid #888; border-right: 2px solid black; } #footer { clear:both; width:100%; height:0px;font-size:0px; } #container2 { clear:left; float:left; width:600px; overflow:hidden; background:#ffa7a7; } #container1 { float:left; width:600px; position:relative; right:200px; background:#fff689; } #col1 { float:left; width:400px; position:relative; left:200px; overflow:hidden; } #col2 { float:left; width:200px; position:relative; left:200px; overflow:hidden; } /* --> */ </style> </head> <body> <div id="container2"> <div id="container1"> <div id="col1"> aaaa a a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a a a a aa a a a a aa aa a a a a a a a a aa aa a a a a a a a a aa aa a a a a aa a a a a aa aa a </div> <div id="col2"> fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn fghdfghsfgddn v </div> </div> </div> <div id="footer"> &nbsp; </div> </body>

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• Overflow - what am I doing wrong?

  - by ClarkeyBoy

  Hi, I have been working on trying to get a page to display a title at the top of the content pane, and then a scrollable list of products below that so that the title of the product range is displayed at all times. I am sure this is a very simple thing to do - but cannot figure it out. Currently the actual page (not the test page for which the code is given below) works ok in the sense that I set the heading div to 5% of the height of .content-container and then set the scrollable div to 95% with top: 5%, both with position: absolute applied. - however I would like to place some links in the heading div to different pages (1, 2, 3 etc), which I would like to centre vertically if they are shorter than the heading and expand the heading div to match the height of the heading or the links, whichever is smallest. Furthermore I would like the div below the heading to shrink so that it doesn't go below the bottom of the content div as the heading div gets taller. The point of this is because it is for a client who may, or may not, be happy with the heading sizes and so on - therefore the heading div height could easily change. Specifying heights so precisely means that changing the h1 height could mean 5 changes to the CSS file - something I want to avoid. The content pane currently has its height fixed to 80% of the page, with the header and footer being 10% each on top of that, so there is no scrollbar at the side of the page and the header / footer are always showing. This is something I would like to keep. In the code below, .content-container is the main content pane - this is contained in another div which is centred using the margin at 50% of the page width. .test-div is the div which contains the heading. .test-div-2 is an attempt to place a div below .test-div, in the hope that I can force .test-div-3 to extend to 100% of its' height but no further, and to display a scrollbar if the content exceeds the height. So far I have the following, but it doesn't do exactly what I would like it to: <div class="content-container"> <div class="test-div"> <h1 style="text-align: center;">Dogs</h1> </div> <div class="test-div-2"> <div class="test-div-3"> //Content here </div> </div> </div> .content-container { position: absolute; width: 100%; height: 100%; left: 0; right: 0; bottom: 0; overflow: auto; } .test-div { position: relative; padding: 0; margin: 0; } .test-div-2 { position: relative; background-color: #CCCCCC; } .test-div-3 { max-height: 100%; background-color: #999999; } Any help with this would be greatly appreciated. I would like to achieve this without the use of JavaScript / jQuery if possible - pure HTML / CSS solutions only please! Regards, Richard

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• Const references when dereferencing iterator on set, starting from Visual Studio 2010

  - by Patrick

  Starting from Visual Studio 2010, iterating over a set seems to return an iterator that dereferences the data as 'const data' instead of non-const. The following code is an example of something that does compile on Visual Studio 2005, but not on 2010 (this is an artificial example, but clearly illustrates the problem we found on our own code). In this example, I have a class that stores a position together with a temperature. I define comparison operators (not all them, just enough to illustrate the problem) that only use the position, not the temperature. The point is that for me two instances are identical if the position is identical; I don't care about the temperature. #include <set> class DataPoint { public: DataPoint (int x, int y) : m_x(x), m_y(y), m_temperature(0) {} void setTemperature(double t) {m_temperature = t;} bool operator<(const DataPoint& rhs) const { if (m_x==rhs.m_x) return m_y<rhs.m_y; else return m_x<rhs.m_x; } bool operator==(const DataPoint& rhs) const { if (m_x!=rhs.m_x) return false; if (m_y!=rhs.m_y) return false; return true; } private: int m_x; int m_y; double m_temperature; }; typedef std::set<DataPoint> DataPointCollection; void main(void) { DataPointCollection points; points.insert (DataPoint(1,1)); points.insert (DataPoint(1,1)); points.insert (DataPoint(1,2)); points.insert (DataPoint(1,3)); points.insert (DataPoint(1,1)); for (DataPointCollection::iterator it=points.begin();it!=points.end();++it) { DataPoint &point = *it; point.setTemperature(10); } } In the main routine I have a set to which I add some points. To check the correctness of the comparison operator, I add data points with the same position multiple times. When writing the contents of the set, I can clearly see there are only 3 points in the set. The for-loop loops over the set, and sets the temperature. Logically this is allowed, since the temperature is not used in the comparison operators. This code compiles correctly in Visual Studio 2005, but gives compilation errors in Visual Studio 2010 on the following line (in the for-loop): DataPoint &point = *it; The error given is that it can't assign a "const DataPoint" to a [non-const] "DataPoint &". It seems that you have no decent (= non-dirty) way of writing this code in VS2010 if you have a comparison operator that only compares parts of the data members. Possible solutions are: Adding a const-cast to the line where it gives an error Making temperature mutable and making setTemperature a const method But to me both solutions seem rather 'dirty'. It looks like the C++ standards committee overlooked this situation. Or not? What are clean solutions to solve this problem? Did some of you encounter this same problem and how did you solve it? Patrick

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• ListView with button and check mark?

  - by jgelderloos

  So I have looked through a lot of other answers but have not been able to get my app to work how I want it. I basically want the list view that has the text and check mark to the right, but then an addition button to the left. Right now my list view shows up but the check image is never changed. Selector: <?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_selected="true" android:drawable="@drawable/accept_on" /> <item android:drawable="@drawable/accept" /> </selector> Row xml: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/layout" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="10dp" android:background="#EEE"> <ImageButton android:id="@+id/goToMapButton" android:src="@drawable/go_to_map" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="left" /> <TextView android:id="@+id/itemName" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center_vertical" android:textColor="#000000" android:layout_marginTop="5dp" android:layout_marginBottom="5dp" android:layout_weight="1" /> <Button android:id="@+id/checkButton" android:background="@drawable/item_selector" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="right" /> </LinearLayout> MapAdapter: import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.ImageButton; import android.widget.LinearLayout; import android.widget.TextView; public class MapAdapter extends ArrayAdapter<String>{ Context context; int layoutResourceId; String data[] = null; LayoutInflater inflater; LinearLayout layout; public MapAdapter(Context context, int layoutResourceId, String[] data) { super(context, layoutResourceId, data); this.layoutResourceId = layoutResourceId; this.context = context; this.data = data; inflater = LayoutInflater.from(context); } @Override public String getItem(int position) { return data[position]; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = new ViewHolder(); if(convertView == null) { convertView = inflater.inflate(R.layout.map_item_row, null); layout = (LinearLayout)convertView.findViewById(R.id.layout); holder.map = (ImageButton)convertView.findViewById(R.id.goToMapButton); holder.name = (TextView)convertView.findViewById(R.id.itemName); //holder.check = (Button)convertView.findViewById(R.id.checkButton); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } layout.setBackgroundColor(0x00000004); holder.name.setText(getItem(position)); return convertView; } static class ViewHolder { ImageButton map; TextView name; Button check; } }

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• Working on a jQuery plugin : viewport simulator

  - by pixelboy

  Hi community, i'm working on a jQuery plugin that's aiming to simulate one axis camera movements. The first step to achieving this is simple : use conventional, clean markup, and get the prototype to work. Heres how to initiate the plugin : $('#wrapper').fluidGrids({exclude: '.exclude'}); Here's a working demo of the WIP thing : http://sandbox.test.everestconseil.com/protoCitroen/home.html Where am I having issues : Is there a fast way to detect if parent of each target (clickable animated element) is a href link, and if so to save this url ? My clone uses the original background image to then animate it.fade it to black/white. But when you clik on an element, image url is found, but doesn't seem to be injected. Do you see anything ? Finally, about animation of elements : as you can see in source code, I'm using the container $('#wrapper') to position all animated children. What would be the perfect properties to apply to make this cross browser proof ? Here's the source code for the plugin, fully commented. (function($){ $.fn.extend({ //plugin name - fluidGrids fluidGrids: function(options) { //List and default values for available options var defaults = { //The target that we're going to use to handle click event hitTarget: '.animateMe', exclude: '.exclude', animateSpeed: 1000 }; var options = $.extend(defaults, options); return this.each(function() { var o = options; //Assign current element to variable var obj = $(this); //We assign default width height and positions to each object in order to get them back when necessary var objPosition = obj.position(); //Get all ready to animate targets in innerViewport var items = $(o.hitTarget, obj); //Final coords of innerViewport var innerViewport = new Object(); innerViewport.top = parseInt(objPosition.top); innerViewport.left = parseInt(objPosition.left); innerViewport.bottom = obj.height(); innerViewport.right = obj.width(); items.each(function(e){ //Assign a pointer cursor to each clickable element $(this).css("cursor","pointer"); //To load distant url at last, we look for it in Title Attribute if ($(this).attr('title').length){ var targetUrl = $(this).attr('title'); } //We assign default width height and positions to each object in order to get them back when necessary var itemPosition = $(this).position(); var itemTop = itemPosition.top; var itemLeft = itemPosition.left; var itemWidth = $(this).width(); var itemHeight = $(this).height(); //Both the original and it's animated clone var original = $(this); //To give the if (original.css('background-image')){ var urlImageOriginal = original.css('background-image').replace(/^url|[("")]/g, ''); var imageToInsert = "<img src="+urlImageOriginal+"/>" } var clone = $(this).clone(); original.click(function() { $(clone).append(imageToInsert); $(clone).attr("id","clone"); $(clone).attr('top',itemTop); $(clone).attr('left',itemLeft); $(clone).css("position","absolute"); $(clone).insertAfter(this); $(this).hide(); $(clone).animate({ top: innerViewport.top, left: innerViewport.left, width: innerViewport.bottom, height: innerViewport.right }, obj.animateSpeed); $("*",obj).not("#clone, #clone * , a , "+ o.exclude).fadeOut('fast'); //Si l'objet du click est un lien return false; }); }); }); } }); })(jQuery);

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• set all nested li's to be width of widest li

  - by unhitched

  hey, How do I make nested li's the same width? When I use the below code each nested li is only as wide as it's text + margin. I'd like all of the li's to be as wide as the widest li under the parent ul. eg: <ul id="menu"> <li <a href="#" title="Menu a">Menu a</a></li> <li <a href="#" title="Menu b">Menu b</a></li> <li <a href="#" title="Nested Menu">Nested Menu</a> <ul> <li <a href="#" title="Menu Item">Menu Item</li> <li <a href="#" title="Long Menu Item">Long Menu Item</a></li> <li <a href="#" title="Longer Menu Item">Longer Menu Item</a></li> </ul> </li> <li <a href="#" title="Menu z">Menu z</a></li> </ul> with css: <style type="text/css" media="all"> * { padding:0; margin:0; } body, html { width: 100%; height: 100%; } #wrapper { width: 800px; height: 100%; margin: auto; } #menu { margin: 0 0 0 8px; padding: 0; font-size: 14px; font-weight: normal; } #menu ul { list-style-type:none; list-style-position:outside; position:relative; z-index:300; height: 32px; font-weight:bold; white-space: nowrap; padding:0; } #menu a {text-decoration:none; line-height: 32px; } #menu a:hover { } #menu li { float:left; position:relative; display: inline; height: 100%; list-style-type: none; padding: 0 20px; background: #ccc; } #menu ul { position:absolute; display:none; left:0px; background: #BDCCD4; width:100%; } #menu ul a, #menu li a { display: block; } #menu li ul { background: #BDCCD4; display:block; } #menu li ul a { font-weight: normal; height:auto; float:left; } #menu ul ul { padding: 0 9px; display:block; } #menu li ul li { padding: 0 9px; background: #BDCCD4; } #menu li:hover { background: #ddd; height: 32px; } #menu li li:hover, #menu li li li:hover { background: #ddd; height: 32px; } #menu li a:link, #menu li a:visited { text-decoration: none; color: #003E7E; margin: auto; }

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• Generics and Performance question.

  - by Tarmon

  Hey Everyone, I was wondering if anyone could look over a class I wrote, I am receiving generic warnings in Eclipse and I am just wondering if it could be cleaned up at all. All of the warnings I received are surrounded in ** in my code below. The class takes a list of strings in the form of (hh:mm AM/PM) and converts them into HourMinute objects in order to find the first time in the list that comes after the current time. I am also curious about if there are more efficient ways to do this. This works fine but the student in me just wants to find out how I could do this better. public class FindTime { private String[] hourMinuteStringArray; public FindTime(String[] hourMinuteStringArray){ this.hourMinuteStringArray = hourMinuteStringArray; } public int findTime(){ HourMinuteList hourMinuteList = convertHMStringArrayToHMArray(hourMinuteStringArray); Calendar calendar = new GregorianCalendar(); int hour = calendar.get(Calendar.HOUR_OF_DAY); int minute = calendar.get(Calendar.MINUTE); HourMinute now = new HourMinute(hour,minute); int nearestTimeIndex = findNearestTimeIndex(hourMinuteList, now); return nearestTimeIndex; } private int findNearestTimeIndex(HourMinuteList hourMinuteList, HourMinute now){ HourMinute current; int position = 0; Iterator<HourMinute> iterator = **hourMinuteList.iterator()**; while(iterator.hasNext()){ current = (HourMinute) iterator.next(); if(now.compareTo(current) == -1){ return position; } position++; } return position; } private static HourMinuteList convertHMStringArrayToHMArray(String[] times){ FindTime s = new FindTime(new String[1]); HourMinuteList list = s.new HourMinuteList(); String[] splitTime = new String[3]; for(String time : times ){ String[] tempFirst = time.split(":"); String[] tempSecond = tempFirst[1].split(" "); splitTime[0] = tempFirst[0]; splitTime[1] = tempSecond[0]; splitTime[2] = tempSecond[1]; int hour = Integer.parseInt(splitTime[0]); int minute = Integer.parseInt(splitTime[1]); HourMinute hm; if(splitTime[2] == "AM"){ hm = s.new HourMinute(hour,minute); } else if((splitTime[2].equals("PM")) && (hour < 12)){ hm = s.new HourMinute(hour + 12,minute); } else{ hm = s.new HourMinute(hour,minute); } **list.add(hm);** } return list; } class **HourMinuteList** extends **ArrayList** implements RandomAccess{ } class HourMinute implements **Comparable** { int hour; int minute; public HourMinute(int hour, int minute) { setHour(hour); setMinute(minute); } int getMinute() { return this.minute; } String getMinuteString(){ if(this.minute < 10){ return "0" + this.minute; }else{ return "" + this.minute; } } int getHour() { return this.hour; } void setHour(int hour) { this.hour = hour; } void setMinute(int minute) { this.minute = minute; } @Override public int compareTo(Object aThat) { if (aThat instanceof HourMinute) { HourMinute that = (HourMinute) aThat; if (this.getHour() == that.getHour()) { if (this.getMinute() > that.getMinute()) { return 1; } else if (this.getMinute() < that.getMinute()) { return -1; } else { return 0; } } else if (this.getHour() > that.getHour()) { return 1; } else if (this.getHour() < that.getHour()) { return -1; } else { return 0; } } return 0; } } If you have any questions let me know. Thanks, Rob

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• Calculus? Need help solving for a time-dependent variable given some other variables.

  - by user451527

  Long story short, I'm making a platform game. I'm not old enough to have taken Calculus yet, so I know not of derivatives or integrals, but I know of them. The desired behavior is for my character to automagically jump when there is a block to either side of him that is above the one he's standing on; for instance, stairs. This way the player can just hold left / right to climb stairs, instead of having to spam the jump key too. The issue is with the way I've implemented jumping; I've decided to go mario-style, and allow the player to hold 'jump' longer to jump higher. To do so, I have a 'jump' variable which is added to the player's Y velocity. The jump variable increases to a set value when the 'jump' key is pressed, and decreases very quickly once the 'jump' key is released, but decreases less quickly so long as you hold the 'jump' key down, thus providing continuous acceleration up as long as you hold 'jump.' This also makes for a nice, flowing jump, rather than a visually jarring, abrupt acceleration. So, in order to account for variable stair height, I want to be able to calculate exactly what value the 'jump' variable should get in order to jump exactly to the height of the stair; preferably no more, no less, though slightly more is permissible. This way the character can jump up steep or shallow flights of stairs without it looking weird or being slow. There are essentially 5 variables in play: h -the height the character needs to jump to reach the stair top<br> j -the jump acceleration variable<br> v -the vertical velocity of the character<br> p -the vertical position of the character<br> d -initial vertical position of the player minus final position<br> Each timestep:<br> j -= 1.5; //the jump variable's deceleration<br> v -= j; //the jump value's influence on vertical speed<br> v *= 0.95; //friction on the vertical speed<br> v += 1; //gravity<br> p += v; //add the vertical speed to the vertical position<br> v-initial is known to be zero<br> v-final is known to be zero<br> p-initial is known<br> p-final is known<br> d is known to be p-initial minus p-final<br> j-final is known to be zero<br> j-initial is unknown<br> Given all of these facts, how can I make an equation that will solve for j? tl;dr How do I Calculus? Much thanks to anyone who's made it this far and decides to plow through this problem.

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• Help to restructure my Doc/View more correctly

  - by Harvey

  Edited by OP. My program is in need of a lot of cleanup and restructuring. In another post I asked about leaving the MFC DocView framework and going to the WinProc & Message Loop way (what is that called for short?). Well at present I am thinking that I should clean up what I have in Doc View and perhaps later convert to non-MFC it that even makes sense. My Document class currently has almost nothing useful in it. I think a place to start is the InitInstance() function (posted below). In this part: POSITION pos=pDocTemplate->GetFirstDocPosition(); CLCWDoc *pDoc=(CLCWDoc *)pDocTemplate->GetNextDoc(pos); ASSERT_VALID(pDoc); POSITION vpos=pDoc->GetFirstViewPosition(); CChildView *pCV=(CChildView *)pDoc->GetNextView(vpos); This seem strange to me. I only have one doc and one view. I feel like I am going about it backwards with GetNextDoc() and GetNextView(). To try to use a silly analogy; it's like I have a book in my hand but I have to look up in it's index to find out what page the Title of the book is on. I'm tired of feeling embarrassed about my code. I either need correction or reassurance, or both. :) Also, all the miscellaneous items are in no particular order. I would like to rearrange them into an order that may be more standard, structured or straightforward. ALL suggestions welcome! BOOL CLCWApp::InitInstance() { InitCommonControls(); if(!AfxOleInit()) return FALSE; // Initialize the Toolbar dll. (Toolbar code by Nikolay Denisov.) InitGuiLibDLL(); // NOTE: insert GuiLib.dll into the resource chain SetRegistryKey(_T("Real Name Removed")); // Register document templates CSingleDocTemplate* pDocTemplate; pDocTemplate = new CSingleDocTemplate( IDR_MAINFRAME, RUNTIME_CLASS(CLCWDoc), RUNTIME_CLASS(CMainFrame), RUNTIME_CLASS(CChildView)); AddDocTemplate(pDocTemplate); // Parse command line for standard shell commands, DDE, file open CCmdLineInfo cmdInfo; ParseCommandLine(cmdInfo); // Dispatch commands specified on the command line // The window frame appears on the screen in here. if (!ProcessShellCommand(cmdInfo)) { AfxMessageBox("Failure processing Command Line"); return FALSE; } POSITION pos=pDocTemplate->GetFirstDocPosition(); CLCWDoc *pDoc=(CLCWDoc *)pDocTemplate->GetNextDoc(pos); ASSERT_VALID(pDoc); POSITION vpos=pDoc->GetFirstViewPosition(); CChildView *pCV=(CChildView *)pDoc->GetNextView(vpos); if(!cmdInfo.m_Fn1.IsEmpty() && !cmdInfo.m_Fn2.IsEmpty()) { pCV->OpenF1(cmdInfo.m_Fn1); pCV->OpenF2(cmdInfo.m_Fn2); pCV->DoCompare(); // Sends a paint message when complete } // enable file manager drag/drop and DDE Execute open m_pMainWnd->DragAcceptFiles(TRUE); m_pMainWnd->ShowWindow(SW_SHOWNORMAL); m_pMainWnd->UpdateWindow(); // paints the window background pCV->bDoSize=true; //Prevent a dozen useless size calculations return TRUE; } Thanks

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• XSLT: a variation on the pagination problem

  - by MarcoS

  I must transform some XML data into a paginated list of fields. Here is an example. Input XML: <?xml version="1.0" encoding="UTF-8"?> <data> <books> <book title="t0"/> <book title="t1"/> <book title="t2"/> <book title="t3"/> <book title="t4"/> </books> <library name="my library"/> </data> Desired output: <?xml version="1.0" encoding="UTF-8"?> <pages> <page number="1"> <field name="library_name" value="my library"/> <field name="book_1" value="t0"/> <field name="book_2" value="t1"/> </page> <page number="2"> <field name="book_1" value="t2"/> <field name="book_2" value="t3"/> </page> <page number="3"> <field name="book_1" value="t4"/> </page> </pages> In the above example I assume that I want at most 2 fields named book_n (with n ranging between 1 and 2) per page. Tags <page> must have an attribute number. Finally, the field named library_name must appear only the first <page>. Here is my current solution using XSLT: <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0" exclude-result-prefixes="trx xs"> <xsl:output method="xml" indent="yes" omit-xml-declaration="no" /> <xsl:variable name="max" select="2"/> <xsl:template match="//books"> <xsl:for-each-group select="book" group-ending-with="*[position() mod $max = 0]"> <xsl:variable name="pageNum" select="position()"/> <page number="{$pageNum}"> <xsl:for-each select="current-group()"> <xsl:variable name="idx" select="if (position() mod $max = 0) then $max else position() mod $max"/> <field value="{@title}"> <xsl:attribute name="name">book_<xsl:value-of select="$idx"/> </xsl:attribute> </field> </xsl:for-each> <xsl:if test="$pageNum = 1"> <xsl:call-template name="templateFor_library"/> </xsl:if> </page> </xsl:for-each-group> </xsl:template> <xsl:template name="templateFor_library"> <xsl:for-each select="//library"> <field name="library_name" value="{@name}" /> </xsl:for-each> </xsl:template> </xsl:stylesheet> Is there a better/simpler way to perform this transformation?

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• JSON Paring - How to show second Level ListView

  - by Sophie

  I am parsing JSON data into ListView, and successfully parsed first level of JSON in MainActivity.java, where i am showing list of Main Locations, like: Inner Locations Outer Locations Now i want whenever i do tap on Inner Locations then in SecondActivity it should show Delhi and NCR in a List, same goes for Outer Locations as well, in this case whenever user do tap need to show USA JSON look like: { "all": [ { "title": "Inner Locations", "maps": [ { "title": "Delhi", "markers": [ { "name": "Connaught Place", "latitude": 28.632777800000000000, "longitude": 77.219722199999980000 }, { "name": "Lajpat Nagar", "latitude": 28.565617900000000000, "longitude": 77.243389100000060000 } ] }, { "title": "NCR", "markers": [ { "name": "Gurgaon", "latitude": 28.440658300000000000, "longitude": 76.987347699999990000 }, { "name": "Noida", "latitude": 28.570000000000000000, "longitude": 77.319999999999940000 } ] } ] }, { "title": "Outer Locations", "maps": [ { "title": "United States", "markers": [ { "name": "Virgin Islands", "latitude": 18.335765000000000000, "longitude": -64.896335000000020000 }, { "name": "Vegas", "latitude": 36.114646000000000000, "longitude": -115.172816000000010000 } ] } ] } ] } Note: But whenever i do tap on any of the ListItem in first activity, not getting any list in SecondActivity, why ? MainActivity.java:- @Override protected Void doInBackground(Void... params) { // Create an array arraylist = new ArrayList<HashMap<String, String>>(); // Retrieve JSON Objects from the given URL address jsonobject = JSONfunctions .getJSONfromURL("http://10.0.2.2/locations.json"); try { // Locate the array name in JSON jsonarray = jsonobject.getJSONArray("all"); for (int i = 0; i < jsonarray.length(); i++) { HashMap<String, String> map = new HashMap<String, String>(); jsonobject = jsonarray.getJSONObject(i); // Retrieve JSON Objects map.put("title", jsonobject.getString("title")); arraylist.add(map); } } catch (JSONException e) { Log.e("Error", e.getMessage()); e.printStackTrace(); } return null; } @Override protected void onPostExecute(Void args) { // Locate the listview in listview_main.xml listview = (ListView) findViewById(R.id.listview); // Pass the results into ListViewAdapter.java adapter = new ListViewAdapter(MainActivity.this, arraylist); // Set the adapter to the ListView listview.setAdapter(adapter); // Close the progressdialog mProgressDialog.dismiss(); listview.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Toast.makeText(MainActivity.this, String.valueOf(position), Toast.LENGTH_LONG).show(); // TODO Auto-generated method stub Intent sendtosecond = new Intent(MainActivity.this, SecondActivity.class); // Pass all data rank sendtosecond.putExtra("title", arraylist.get(position).get(MainActivity.TITLE)); Log.d("Tapped Item::", arraylist.get(position).get(MainActivity.TITLE)); startActivity(sendtosecond); } }); } } } SecondActivity.java: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get the view from listview_main.xml setContentView(R.layout.listview_main); Intent in = getIntent(); strReceived = in.getStringExtra("title"); Log.d("Received Data::", strReceived); // Execute DownloadJSON AsyncTask new DownloadJSON().execute(); } // DownloadJSON AsyncTask private class DownloadJSON extends AsyncTask<Void, Void, Void> { @Override protected void onPreExecute() { super.onPreExecute(); } @Override protected Void doInBackground(Void... params) { // Create an array arraylist = new ArrayList<HashMap<String, String>>(); // Retrieve JSON Objects from the given URL address jsonobject = JSONfunctions .getJSONfromURL("http://10.0.2.2/locations.json"); try { // Locate the array name in JSON jsonarray = jsonobject.getJSONArray("maps"); for (int i = 0; i < jsonarray.length(); i++) { HashMap<String, String> map = new HashMap<String, String>(); jsonobject = jsonarray.getJSONObject(i); // Retrieve JSON Objects map.put("title", jsonobject.getString("title")); arraylist.add(map); } } catch (JSONException e) { Log.e("Error", e.getMessage()); e.printStackTrace(); } return null; }

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• CSS Horizontal sub menu - IE 6,7 both dont working, tried with whatever hover.

  - by SHAKTI

  I'm not expert about css menus. But I know basic system to make css menu. I used this system before and works, but this time it is not working. The site is http://www.uniethos.com. Please check this site This menu works with all other latest Browsers. But not with IE 6 & 7. I know IE6 don't support hover except anchor. So before I was using Whatever Hover. But this time it is not working and even with IE7. I don't know why its happening. May be there could be some problem with my css. Please check the css. If you don't have IE 6 or 7 installed you can run one from http://spoon.net/browsers/. Require to install one plugin. The CSS I'm using for the menu is .glossymenu{ background: #B4B3B3; height: 30px; width: 100%; padding: 0; margin: 0; display:inline-block; position:relative; } .glossymenu ul { list-style: none; padding: 0px; margin: 0; padding-left: 0px; } .glossymenu li ul { display:none; position:absolute; width: 80%; top:30px; left:0px; background-color:#5B0C10; border:0px; z-index: 99; } .glossymenu li li a { padding: 0px 10px 0px 10px; } .glossymenu li li a:hover { background : #871016; } .glossymenu li{ float:left; padding: 0; } .glossymenu li a{ float: left; display:block; position:relative; color:#FFF; text-decoration: none; font-family: sans-serif; font-size: 13px; font-weight: bold; padding:0 0 0 16px; /*Padding to accomodate left tab image. Do not change*/ height: 30px; line-height: 30px; text-align: center; cursor: pointer; } .glossymenu li a b{ float: left; display: block; padding: 0 24px 0 8px; /*Padding of menu items*/ } .glossymenu li.current a, .glossymenu li a:hover{ color: #FFF; background: #5B0C10; background-position: left; text-decoration: none; } .glossymenu li a:visited{ text-decoration: none; } .glossymenu ul li:hover ul { display: block; }

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• jquery mouse events masked by img in IE8 - all other platforms/browsers work fine

  - by Bruce

  Using the jQuery mouse events for mouseenter, mouseleave or hover all work swimmingly on all Mac or Windows browsers except for IE8/Windows. I am using mouseenter and mouseleave to test for hot rectangles (absolutely positioned and dimensioned divs that have no content) over an image used as hotspots to make visible the navigation buttons when different regions of the main enclosing rectangle (image) are touched by the cursor. Windows/IE jQuery never sends notifications (mouseenter our mouseleave) as the cursor enters or exits one of the target divs. If I turn off the visibility of the image everything works as expected (like it does in every other browser), so the image is effectively blocking all messages (the intention was for the image to be a background and all the divs float above it, where they can be clicked on). I understand that there's a z-index gotcha (so explicitly specifying z-index for each absolute positioned div does not work), but unclear as to how to nest or order multiple divs to allow a single set of jQuery rules to support all browsers. The image tag seems to trump all other divs and always appear in front of them... BTW: I could not use i m g as a tag in this text so it is spelled image in the following, so the input editor does not think that I am trying to pull a fast one on stackoverflow... How used? "mainview" is the background image, "zoneleft" and "zoneright" are the active areas where when the cursor enters the nav buttons "leftarrow" and rightarrow" are supposed to appear. Javascript $("div#zoneleft").bind("mouseenter",function () // enters left zone see left arrow { arrowVisibility("left"); document.getElementById("leftarrow").style.display="block"; }).bind("mouseleave",function () { document.getElementById("leftarrow").style.visibility="hidden"; document.getElementById("rightarrow").style.visibility="hidden"; }); HTML <div id="zoneleft" style="position:absolute; top:44px; left:0px; width:355px; height:372px; z-index:40;"> <div id="leftarrow" style="position:absolute; top:158px; left:0px; z-index:50;"><img src="images/newleft.png" width="59" height="56"/></div></div> <div id="zoneright" style="position:absolute; top:44px; left:355px; width:355px; height:372px; z-index:40;"> <div id="rightarrow" style="position:absolute; top:158px; left:296px; z-index:50;"> (tag named changed so that I could include it here) <image src="images/newright.png" width="59" height="56" /></div></div> </div><!-- navbuttons --> <image id="mainview" style="z-index:-1;" src="images/projectPhotos/photo1.jpg" width:710px; height:372px; /> (tag named changed so that I could include it here) </div><!--photo-->

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• how to change php functions send result to jquery ajax

  - by OpenCode

  I have many codes for user notifications, it do many mysql works, so it needs waiting times. jquery ajax works for php files. how can i use jquery for send php result to web page? current code : <? echo db_cache("main_top_naver_cache", 300, "naver_popular('naver_popular', 4)"))?> wanted code : but it shows errors... <div id='a'> <div id='b'> <script type="text/javascript"> $("#test1").html( " <? echo htmlspecialchars(db_cache("main_top_naver_cache", 300, "naver_popular('naver_popular', 4)"))?> " ); </script> IE debuger shows error ... SCRIPT1015:... <script type="text/javascript"> $("#test1").html( " &lt;style&gt; /* http://html.nhncorp.com/uio_factory/ui_pattern/list/3 */ .section_ol3{position:relative;border:1px solid #ddd;background:#fff;font-size:12px;font-family:Tahoma, Geneva, sans-serif;line-height:normal;*zoom:1} .section_ol3 a{color:#666;text-decoration:none} .section_ol3 a:hover, .section_ol3 a:active, .section_ol3 a:focus{text-decoration:underline} .section_ol3 em{font-style:normal} .section_ol3 h2{margin:0;padding:10px 0 8px 13px;border-bottom:1px solid #ddd;font-size:12px;color:#333} .section_ol3 h2 em{color:#cf3292} .section_ol3 ol{margin:13px;padding:0;list-style:none} .section_ol3 li{position:relative;margin:0 0 10px 0;*zoom:1} .section_ol3 li:after{display:block;clear:both;content:&quot;&quot;} .section_ol3 li .ranking{display:inline-block;width:14px;height:11px;margin:0 5px 0 0;border-top:1px solid #fff;border-bottom:1px solid #d1d1d1;background:#d1d1d1;text-align:center;vertical-align:top;font:bold 10px Tahoma;color:#fff} .section_ol3 li.best .ranking{border-bottom:1px solid #6e87a5;background:#6e87a5} .section_ol3 li.best a{color:#7189a7} .section_ol3 li .num{position:absolute;top:0;right:0;font-size:11px;color:#a8a8a8;white-space:nowrap} .section_ol3 li.best .num{font-weight:bold;color:#7189a7} .section_ol3 .more{position:absolute;top:10px;right:13px;font:11px Dotum, ??;text-decoration:none !important} .section_ol3 .more span{margin:0 2px 0 0;font-weight:bold;font-size:16px;color:#d76ea9;vertical-align:middle} &lt;/style&gt; &lt;div class=&quot;section_ol3&quot;&gt; &lt;ol style='text-align:left;'&gt; &lt;li class='best'&gt;&lt;span class='ranking'&gt;1&lt;/span&gt;&lt;a href='http://search.naver.com/search.naver?where=nexearch&amp;query=%B9%AB%C7%D1%B5%B5%C0%FC&amp;sm=top_lve' onfocus='this.blur()' title='????' target=new&gt;????&lt;/a&gt;&lt;span class='num'&gt;+42&lt;/span&gt;&lt;/li&gt;&lt;li class='best'&gt;&lt;span class='ranking'&gt;2&lt;/span&gt;&lt;a href='http://search.naver.com/search.naver?where=nexearch&amp;query=%B1%E8%C0%E7%BF%AC&amp;sm=top_lve' onfocus='this.blur()' title='???' target=new&gt;???&lt;/a&gt;&lt;span class='num'&gt;+123&lt;/span&gt;&lt;/li&gt;&lt;li class='best'&gt;&lt;span class='ranking'&gt;3&lt;/span&gt;&lt;a href='http://search.naver.com/search.naver?where=nexearch&amp;query=%C0%CC%C7%CF%C0%CC&amp;sm=top_lve' onfocus='this.blur()' title='???' target=new&gt;???&lt;/a&gt;&lt;span class='num'&gt;+90&lt;/span&gt;&lt;/li&gt;&lt;li &gt;&lt;span class='ranking'&gt;4&lt;/span&gt;&lt;a href='http://search.naver.com/search.naver?where=nexearch&amp;query=%BA%D2%C8%C4%C0%C7%B8%ED%B0%EE2&amp;sm=top_lve' onfocus='this.blur()' title='?????2' target=new&gt;?????2&lt;/a&gt;&lt;span class='num'&gt;+87&lt;/span&gt;&lt;/li&gt; &lt;/ol&gt; </div> " );

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• Photo inside the image view should not go cross on dragging

  - by TGMCians

  I want photo inside the imageview should not go outside on dragging. In my code when i start to drag bitmap inside the imageview its goes out from imageview but i want when it cross the imageview its should come at starting point of imageview. How to achieve this. please help me for this. @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); canvas.save(); scaleCount=scaleCount+scale; angleCount = addAngle(angleCount, Math.toDegrees(angle)); Log.v("Positions", "X: "+x+" " + "Y: "+y); Log.d("ScaleCount", String.valueOf(scaleCount)); Log.d("Angle", String.valueOf(angleCount)); if (!isInitialized) { int w = getWidth(); int h = getHeight(); position.set(w / 2, h / 2); isInitialized = true; } Paint paint = new Paint(); Log.v("Height and Width", "Height: "+ getHeight() + "Width: "+ getWidth()); transform.reset(); transform.postTranslate(-width / 2.0f, -height / 2.0f); transform.postRotate((float) Math.toDegrees(angle)); transform.postScale(scale, scale); transform.postTranslate(position.getX(), position.getY()); canvas.drawBitmap(bitmap, transform, paint); canvas.restore(); BitmapWidth=BitmapWidth+bitmap.getScaledWidth(canvas); BitmapHeight=BitmapHeight+bitmap.getScaledHeight(canvas); try { /*paint.setColor(0xFF007F00); canvas.drawCircle(vca.getX(), vca.getY(), 30, paint); paint.setColor(0xFF7F0000); canvas.drawCircle(vcb.getX(), vcb.getY(), 30, paint);*/ /*paint.setColor(0xFFFF0000); canvas.drawLine(vpa.getX(), vpa.getY(), vpb.getX(), vpb.getY(), paint); paint.setColor(0xFF00FF00); canvas.drawLine(vca.getX(), vca.getY(), vcb.getX(), vcb.getY(), paint);*/ } catch(NullPointerException e) { // Just being lazy here... } } @Override public boolean onTouch(View v, MotionEvent event) { vca = null; vcb = null; vpa = null; vpb = null; x=event.getX(); y=event.getY(); try { touchManager.update(event); if (touchManager.getPressCount() == 1) { vca = touchManager.getPoint(0); vpa = touchManager.getPreviousPoint(0); position.add(touchManager.moveDelta(0)); } else { if (touchManager.getPressCount() == 2) { vca = touchManager.getPoint(0); vpa = touchManager.getPreviousPoint(0); vcb = touchManager.getPoint(1); vpb = touchManager.getPreviousPoint(1); VMVector2D current = touchManager.getVector(0, 1); VMVector2D previous = touchManager.getPreviousVector(0, 1); float currentDistance = current.getLength(); float previousDistance = previous.getLength(); if (currentDistance-previousDistance != 0) { scale *= currentDistance / previousDistance; } angle -= VMVector2D.getSignedAngleBetween(current, previous); /*angleCount=angleCount+angle;*/ } } invalidate(); } catch(Exception exception) { // Log.d("VM", exception.getMessage()); } return true; }

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• error Caused by: java.lang.OutOfMemoryError Load Image

  - by user2493770

  This is my method to load images in background, the first and second load normally. But after these loading, a memory error appears. How can I fix this? public class MainArrayAdapterViewHolder extends ArrayAdapter<EmpresaListaPrincipal> { private final Context context; private ArrayList<EmpresaListaPrincipal> data_array; public DisplayImageOptions options; public ImageLoader imageLoader = ImageLoader.getInstance(); public MainArrayAdapterViewHolder(Context context, ArrayList<EmpresaListaPrincipal> list_of_ids) { super(context, R.layout.main_list_rowlayout, list_of_ids); this.context = context; this.data_array = list_of_ids; //------------- read more here https://github.com/nostra13/Android-Universal-Image-Loader options = new DisplayImageOptions.Builder().showImageForEmptyUri(R.drawable.ic_launcher).showImageOnFail(R.drawable.ic_launcher).resetViewBeforeLoading() .cacheOnDisc().imageScaleType(ImageScaleType.IN_SAMPLE_INT).bitmapConfig(Bitmap.Config.RGB_565).delayBeforeLoading(0).build(); File cacheDir = StorageUtils.getCacheDirectory(context); ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).memoryCacheExtraOptions(720, 1280) // default = device screen // dimensions .discCacheExtraOptions(720, 1280, CompressFormat.JPEG, 100).threadPoolSize(3) // default .threadPriority(Thread.NORM_PRIORITY - 1) // default .memoryCacheSize(2 * 1024 * 1024).discCache(new UnlimitedDiscCache(cacheDir)) // default .discCacheSize(50 * 1024 * 1024).discCacheFileCount(100).discCacheFileNameGenerator(new HashCodeFileNameGenerator()) // default .imageDownloader(new BaseImageDownloader(context)) // default .tasksProcessingOrder(QueueProcessingType.FIFO) // default .defaultDisplayImageOptions(options) // default .build(); imageLoader.init(config); } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewholder; View v = convertView; //Asociamos el layout de la lista que hemos creado e incrustamos el ViewHolder if(convertView == null){ LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); //View rowView = inflater.inflate(R.layout.main_list_rowlayout, parent, false); v = inflater.inflate(R.layout.main_list_rowlayout, parent, false); viewholder = new ViewHolder(); viewholder.textView_main_row_title = (TextView) v.findViewById(R.id.textView_main_row_title); viewholder.imageView_restaurant_icon = (ImageView) v.findViewById(R.id.imageView_restaurant_icon); viewholder.textView_main_row_direccion = (TextView) v.findViewById(R.id.textView_main_row_direccion); v.setTag(viewholder); } ImageLoadingListener mImageLoadingListenr = new ImageLoadingListener() { @Override public void onLoadingStarted(String arg0, View arg1) { // Log.e("* started *", String.valueOf("complete")); } @Override public void onLoadingComplete(String arg0, View arg1, Bitmap arg2) { // Log.e("* complete *", String.valueOf("complete")); } @Override public void onLoadingCancelled(String arg0, View arg1) { } @Override public void onLoadingFailed(String arg0, View arg1, FailReason arg2) { // TODO Auto-generated method stub } }; try { viewholder = (ViewHolder) v.getTag(); viewholder.textView_main_row_title.setText(data_array.get(position).getNOMBRE()); viewholder.textView_main_row_direccion.setText(data_array.get(position).getDIRECCION()); String image = data_array.get(position).getURL(); // ------- image --------- try { if (image.length() > 4) imageLoader.displayImage(image, viewholder.imageView_restaurant_icon, options, mImageLoadingListenr); } catch (Exception ex) { } //textView_main_row_title.setText(name); //textView_main_row_address.setText(address); } catch (Exception e) { // TODO: handle exception } return v; } public class ViewHolder { public TextView textView_main_row_title; public TextView textView_main_row_direccion; //public TextView cargo; public ImageView imageView_restaurant_icon; } }

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• Windows Mobile 6.5 GPS Device - WaitForMultipleObjects returns 258 (timeout)

  - by wizmagister

  I’ve created a GPS program that track positions in realtime in the background for Windows mobile 6.1 in 2008-2009. It ran fine on these devices for many years. For some reason, the same code never worked perfectly on Windows Mobile 6.5. After many hour of operations (mostly when nobody use the device), I receive a “Timeout” (code 258) from the function "WaitForMultipleObjects": this.GPSEvent_WaitValue = WaitForMultipleObjects(2, this.GPSEvent_Handles, 0, 45000); Again, this can work for hours and suddenly, it's just impossible to get another position without : UPDATE: - Restarting the device (GoogleMap confirms that there's no GPS device present!) It has something to do with Windows Mobile going to sleep and slowing up my thread. Here's the core code (adapted from Microsoft SDK Sample): /// <summary> /// When "WindowsMobile" wake up the program to check for a new position /// </summary> private void OnNextGPSEvent_Callback() { int SecondsToNextWakeUp = ETL.Mobile.Device.ScheduledCallback.MINIMUM_SECONDTONEXTWAKEUP; switch (this.SleepingState) { case SleepingStateType.SleepingForNextPosition: // Get position this.GPSEvent_WaitValue = (WaitForEventThreadResultType)WaitForMultipleObjects(2, this.GPSEvent_Handles, 0, 45000); switch (this.GPSEvent_WaitValue) { case WaitForEventThreadResultType.Event_LocationChanged: // Got a new position this.FireLocationChanged(this.GetCurrentPosition()); // Manage device shutdown (save battery) if (this.PositionFrequency > MIN_SECONDS_FREQUENCY_FORDEVICE_SHUTDOWN) { // Close device this.CloseDevice(); SecondsToNextWakeUp = (this.PositionFrequency - GPSDEVICE_LOAD_SECONDS_LOAD_TIME); this.SleepingState = SleepingStateType.SleepingBeforeDeviceWakeUp; } else { // Default Wait Time this.SleepingState = SleepingStateType.SleepingForNextPosition; } break; case WaitForEventThreadResultType.Event_StateChanged: break; case WaitForEventThreadResultType.Timeout: case WaitForEventThreadResultType.Failed: case WaitForEventThreadResultType.Stop: // >>>>>>>>>>>>>> This is where the error happens <<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>> This is where the error happens <<<<<<<<<<<<<<<<<<<<<<<<<<< // >>>>>>>>>>>>>> This is where the error happens <<<<<<<<<<<<<<<<<<<<<<<<<<< // Too many errors this.ConsecutiveErrorReadingDevice++; if (this.ConsecutiveErrorReadingDevice > MAX_ERRORREADINGDEVICE) { this.CloseDevice(); SecondsToNextWakeUp = (this.PositionFrequency - GPSDEVICE_LOAD_SECONDS_LOAD_TIME); this.SleepingState = SleepingStateType.SleepingBeforeDeviceWakeUp; } else { // Default Wait Time this.SleepingState = SleepingStateType.SleepingForNextPosition; } break; } #endregion break; case SleepingStateType.SleepingBeforeDeviceWakeUp: this.OpenDevice(); SecondsToNextWakeUp = GPSDEVICE_LOAD_SECONDS_LOAD_TIME; this.SleepingState = SleepingStateType.SleepingForNextPosition; break; } if (this.IsListeningGPSEvent) { // Ajustement du prochain rappel this.NextGPSEvent_Callback.SecondToNextWakeUp = SecondsToNextWakeUp; this.NextGPSEvent_Callback.RequestWakeUpCallback(); } } /// <summary> ///Create Thread /// </summary> private void StartListeningThreadForGPSEvent() { // We only want to create the thread if we don't have one created already and we have opened the gps device if (this._GPSEventThread == null) { // Create and start thread to listen for GPS events this._GPSEventThread = new System.Threading.Thread(new System.Threading.ThreadStart(this.ListeningThreadForGPSEvent)); this._GPSEventThread.Start(); } } private void ListeningThreadForGPSEvent() { this.GPSEvent_WaitValue = WaitForEventThreadResultType.Stop; this.IsListeningGPSEvent = true; // Allocate handles worth of memory to pass to WaitForMultipleObjects this.GPSEvent_Handles = Helpers.LocalAlloc(12); Marshal.WriteInt32(this.GPSEvent_Handles, 0, this._StopHandle.ToInt32()); Marshal.WriteInt32(this.GPSEvent_Handles, 4, this._NewLocationHandle.ToInt32()); Marshal.WriteInt32(this.GPSEvent_Handles, 8, this._GPSDeviceStateChanged.ToInt32()); this.Start_NextGPSEvent_Timer(this.PositionFrequency); this.SleepingState = SleepingStateType.SleepingBeforeDeviceWakeUp; this.OnNextGPSEvent_Callback(); }

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• CSS - Can't get the z-index to apply correctly in Internet Explorer

  - by peaki

  I've written a jQuery script to replace <select /> elements with some DIV's and UL's allowing my to simulate the original SELECT but also allow me to style it. So far, aside from a few minor bugs, it works rather nicely. However, in Internet Explorer, the 'options' div is getting rendered underneath the elements below the div. Here's the HTML: <div class="styledSelect-parent" style="display: inline-block; width: 59px;"> <div class="styledSelect-newSelect" style="position: relative;"> <input class="styledSelect-newSelect-selector" style="width: 59px;" readonly="readonly" name="hello" value="Test1" type="text"> <div class="styledSelect-newSelect-options" style="display: none; z-index: 20; width: 59px; position: absolute; left: 0px; top: 18px;"> <ul> <li>Test1</li> <li>Test2</li> <li>Test3</li> <li class="styledSelect-active">Test4</li> <li>Test1</li> <li>Test2</li> </ul> </div> </div> </div> <br /><br /> <div class="styledSelect-parent" style="display: inline-block; width: 59px;"> <div class="styledSelect-newSelect" style="position: relative;"> <input class="styledSelect-newSelect-selector" style="width: 59px;" readonly="readonly" name="hello" value="Test1" type="text"> <div class="styledSelect-newSelect-options" style="display: none; z-index: 20; width: 59px; position: absolute; left: 0px; top: 18px;"> <ul> <li class="styledSelect-active">Test1</li> <li>Test2</li> <li>Test3</li> </ul> </div> </div> </div> If I open the first select, the LI list sits underneath the second select box rather than above it. I can't get the z-indexes to work properly. What am I missing? :/

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• Elements of website don't work in IE

  - by mjcuva

  On the site I'm working on for my high school basketball team, certain elements don't work in Internet Explorer. The site is hermantownbasketball.com. The boys basketball sidebar should have nested drop down menus, one when you mouse over the team, such as "High School" and then another when you mouse over the grade under the team, such as 9th grade. This works perfectly fine in chrome, however, I can't get it to work in any version of Internet Explorer. Below is the part of the html and the corresponding css I am using. Unfortunately, I don't know enough css to know which part of my code IE doesn't like or how to fix it. Any help is greatly appreciated! HTML <span class = "boyItem"> <h3>High School</h3> <li class="group"> <h4>9th Grade</h4> <div class = "nested">Schedule</div> <div class = "nested">Events</div> <div class ="nested">Forms</div> <div class ="nested">Calendar</div> </li> <li class="group"> <h4>JV/Varsity</h4> <div class = "nested">Schedule</div> <div class = "nested">Events</div> <div class = "nested">Forms</div> <div class = "nested">Calendar</div> </li> </span> /* Creates the box around the title for each boy section. */ .boyItem h3 { background:#1C23E8; color:#EFFA20; padding-right:2px; padding:10px; font-size:18px; margin-left:-30px; margin-top:-10px; } ###CSS .boyItem h3:hover { background:#2A8FF5; } /* Prevents the boy sub-sections from being visable */ .boyItem li h4 { position: absolute; left:-9999px; font-size:15px; list-style-type:none;} /* Shows the boy sub-sections when user mouses over the section title. */ .boyItem:hover li h4 { position:relative; left:10px; background:#1C23E8; color:#EFFA20; padding-left:20px; padding:5px; } .boyItem:hover li h4:hover { background:#2A8FF5;} .nested { position:absolute; left:-9999px; background:#352EFF; color:#EFFA20; padding-right:2px; padding:4px; font-size:14px; margin:2px; margin-left:30px; margin-top:0px; margin-right:0px; margin-bottom:-2px;} .group:hover .nested {position:relative; left:0px; } .group:hover .nested:hover { background:#2A8FF5}

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• Split a Large File In C++

  - by wdow88

  Hey all, I'm trying to write a program that takes a large file (of any time) and splits it into many smaller "chunks". I think I have the basic idea down, but for some reason I cannot create a chunk size over 12,000 bites. I know there are a few solutions on google, etc. but I am more interested in learning what the origin of this limitation is then actually using the program to split files. //This file splits are larger into smaller files of a user inputted size. #include<iostream> #include<fstream> #include<string> #include<sstream> #include <direct.h> #include <stdlib.h> using namespace std; void GetCurrentPath(char* buffer) { _getcwd(buffer, _MAX_PATH); } int main() { // use the function to get the path char CurrentPath[_MAX_PATH]; GetCurrentPath(CurrentPath);//Get the current directory (used for displaying output) fstream bigFile; string filename; int partsize; cout << "Enter a file name: "; cin >> filename; //Recieve target file cout << "Enter the number of bites in each smaller file: "; cin >> partsize; //Recieve volume size bigFile.open(filename.c_str(),ios::in | ios::binary); bigFile.seekg(0, ios::end); // position get-ptr 0 bytes from end int size = bigFile.tellg(); // get-ptr position is now same as file size bigFile.seekg(0, ios::beg); // position get-ptr 0 bytes from beginning for (int i = 0; i <= (size / partsize); i++) { //Build File Name string partname = filename; //The original filename string charnum; //archive number stringstream out; //stringstream object out, used to build the archive name out << "." << i; charnum = out.str(); partname.append(charnum); //put the part name together //Write new file part fstream filePart; filePart.open(partname.c_str(),ios::out | ios::binary); //Open new file with the name built above //Check if near the end of file if (bigFile.tellg() < (size - (size%partsize))) { filePart.write(reinterpret_cast<char *>(&bigFile),partsize); //Write the selected amount to the file filePart.close(); //close file bigFile.seekg(partsize, ios::cur); //move pointer to next position to be written } //Changes the size of the last volume because it is the end of the file else { filePart.write(reinterpret_cast<char *>(&bigFile),(size%partsize)); //Write the selected amount to the file filePart.close(); //close file } cout << "File " << CurrentPath << partname << " produced" << endl; //display the progress of the split } bigFile.close(); cout << "Split Complete." << endl; return 0; } Any ideas? Thanks!

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• Changes to data inside class not being shown when accessed from outside class.

  - by Hypatia

  I have two classes, Car and Person. Car has as one of its members an instance of Person, driver. I want to move a car, while keeping track of its location, and also move the driver inside the car and get its location. However, while this works from inside the class (I have printed out the values as they are calculated), when I try to access the data from main, there's nothing there. I.e. the array position[] ends up empty. I am wondering if there is something wrong with the way I have set up the classes -- could it be a problem of the scope of the object? I have tried simplifying the code so that I only give what is necessary. Hopefully that covers everything that you would need to see. The constructer Car() fills the offset array of driver with nonzero values. class Car{ public: Container(float=0,float=0,float=0); ~Container(); void move(float); void getPosition(float[]); void getDriverPosition(float[]); private: float position[3]; Person driver; float heading; float velocity; }; class Person{ public: Person(float=0,float=0,float=0); ~Person(); void setOffset(float=0,float=0,float=0); void setPosition(float=0,float=0,float=0); void getOffset(float[]); void getPosition(float[]); private: float position[3]; float offset[3]; }; Some of the functions: void Car::move(float time){ float distance = velocity*time; location[0] += distance*cos(PI/2 - heading); location[1] += distance*sin(PI/2 - heading); float driverLocation [3]; float offset[3]; driver->getOffset(offset); for (int i = 0; i < 3; i++){ driverLocation[i] = offset[i] + location[i]; } } void Car::getDriverPosition(float p[]){ driver.getPosition(p); } void Person::getPosition(float p[]){ for (int i = 0; i < 3; i++){ p[i] = position[i]; } } void Person::getOffset(float o[]){ for (int i = 0; i < 3; i++){ o[i] = offset[i]; } } In Main: Car * car = new Car(); car->move(); float p[3]; car->getDriverPosition(p); When I print driverLocation[] inside the move() function, I have actual nonzero values. When I print p[] inside main, all I get are zeros.

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• Table Name is null in the sqlite database in android device

  - by Mahe

  I am building a simple app which stores some contacts and retrieves contacts in android phone device. I have created my own database and a table and inserting the values to the table in phone. My phone is not rooted. So I cannot access the files, but I see that values are stored in the table. And tested on a emulator also. Till here it is fine. Display all the contacts in a list by fetching data from table. This is also fine. But the problem is When I am trying to delete the record, it shows the table name is null in the logcat(not an exception), and the data is not deleted. But in emulator the data is getting deleted from table. I am not able to achieve this through phone. This is my code for deleting, public boolean onContextItemSelected(MenuItem item) { super.onContextItemSelected(item); AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item .getMenuInfo(); int menuItemIndex = item.getItemId(); String[] menuItems = getResources().getStringArray(R.array.menu); String menuItemName = menuItems[menuItemIndex]; String listItemName = Customers[info.position]; if (item.getTitle().toString().equalsIgnoreCase("Delete")) { Toast.makeText( context, "Selected List item is: " + listItemName + "MenuItem is: " + menuItemName, Toast.LENGTH_LONG).show(); DB = context.openOrCreateDatabase("CustomerDetails.db", MODE_PRIVATE, null); try { int pos = info.position; pos = pos + 1; Log.d("", "customers[pos]: " + Customers[info.position]); Cursor c = DB .rawQuery( "Select customer_id,first_name,last_name from CustomerInfo", null); int rowCount = c.getCount(); DB.delete(Table_name, "customer_id" + "=" + String.valueOf(pos), null); DB.close(); Log.d("", "" + String.valueOf(pos)); Toast.makeText(context, "Deleted Customer", Toast.LENGTH_LONG) .show(); // Customers[info.position]=null; getCustomers(); } catch (Exception e) { Toast.makeText(context, "Delete unsuccessfull", Toast.LENGTH_LONG).show(); } } this is my logcat, 07-02 10:12:42.976: D/Cursor(1560): Database path: CustomerDetails.db 07-02 10:12:42.976: D/Cursor(1560): Table name : null 07-02 10:12:42.984: D/Cursor(1560): Database path: CustomerDetails.db 07-02 10:12:42.984: D/Cursor(1560): Table name : null Don't know the reason why data is not being deleted. Data exists in the table. This is the specification I have given for creating the table public static String customer_id="customer_id"; public static String site_id="site_id"; public static String last_name="last_name"; public static String first_name="first_name"; public static String phone_number="phone_number"; public static String address="address"; public static String city="city"; public static String state="state"; public static String zip="zip"; public static String email_address="email_address"; public static String custlat="custlat"; public static String custlng="custlng"; public static String Table_name="CustomerInfo"; final SQLiteDatabase DB = context.openOrCreateDatabase( "CustomerDetails.db", MODE_PRIVATE, null); final String CREATE_TABLE = "create table if not exists " + Table_name + " (" + customer_id + " integer primary key autoincrement, " + first_name + " text not null, " + last_name + " text not null, " + phone_number+ " integer not null, " + address+ " text not null, " + city+ " text not null, " + state+ " text not null, " + zip+ " integer not null, " + email_address+ " text not null, " + custlat+ " double, " + custlng+ " double " +" );"; DB.execSQL(CREATE_TABLE); DB.close(); Please correct my code. I am struggling from two days. Any help is appreciated!!

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