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• Drag and drop image from and to fixed position on fixed path

  - by DMan

  I am trying to allow the user to drag and drop and image from on position to another. The screen layout is as follows: 1 2 3 4 5 6 7 8 9 I want the user to grab image 2, 4, 6, or 8 and drag it to image 5. Upon dragging to image 5 I want to load up a fragment. The user can only drag the image in a straight line from it's current position to 5's position. ie image 2 and only drag down and only until it is overtop of image 5, image 4 can only drag right until overtop of 5, etc. Any insight on how to do this is greatly appreciated. Thanks, DMan

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• Java dropping half of UDP packets

  - by Andrew Klofas

  Greetings, I have a simple client/server setup. The server is in C and the client that is querying the server is Java. My problem is that, when I send bandwidth-intensive data over the connection, such as Video frames, it drops up to half the packets. I make sure that I properly fragment the udp packets on the server side (udp has a max payload length of 2^16). I verified that the server is sending the packets (printf the result of sendto()). But java doesn't seem to be getting half the data. Furthermore, when I switch to TCP, all the video frames get through but the latency starts to build up, adding several seconds delay after a few seconds of runtime. Is there anything obvious that I'm missing? I just can't seem to figure this out. Thanks, Andrew

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• Retrieving FBO data in GLSL

  - by Tom Savage

  I'm trying to get MRT working in OpenGL to try out deferred rendering. Here's the situation as I understand it. Create 3 render buffers (for example). Two RGBA8 and one Depth32. Create an FBO. Attach render buffers to FBO. ColorAttachment0/1 for color buffers, DepthAttachment for depth buffer. Bind the FBO. Draw geometry. Send data to different attachments using gl_FragData[] in the frag shader. At this point I would want to take the data in another pass using GLSL, how can a) retrieve data from the framebuffer color attachments, b) get data from the depth component.

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• OpenGL Shading Language backwards compatibility

  - by Luca

  I've noticed that my GLSL shaders are not compilable when the GLSL version is lower than 130. What are the most critical elements for having a backward compatible shader source? I don't want to have a full backward compatibility, but I'd like to understand the main guidelines for having simple (forward compatible) shaders running on GPU with GLSL lower than 130. Of course the problem could be solved with the preprocessor #if __VERSION__ < 130 #define VERTEX_IN attribute #else #define VERTER_IN in #endif But there probably many issues that I ignore. Thank you

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• Android: onClick on LinearLayout with TextView and Button

  - by Terry

  I have a Fragment that uses the following XML layout: <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/card" android:clickable="true" android:onClick="editActions" android:orientation="vertical" > <TextView android:id="@+id/title" style="@style/CardTitle" android:layout_width="wrap_content" android:layout_height="wrap_content" android:duplicateParentState="true" android:text="@string/title_workstation" /> <Button android:id="@+id/factory_button_edit" style="?android:attr/buttonStyleSmall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:duplicateParentState="true" android:text="@string/label_edit" /> </LinearLayout> As you can see, I have an onClick parameter set on LinearLayout. Now on the TextView this one is triggered correctly, and on all empty area. Just on the Button it doesn't invoke the onClick method that I set. Is this normal? What do I have to do so that the onClick method is invoked everywhere on the LinearLayout?

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• How to add global exception handling to a add-in dll?

  - by redjackwong

  Here's my context: I am writing a WPF add-in for an application. This Application's main thread is unmanaged. I want to add a global exception handling system for this add-in to handle any unhandled exceptions. Here's what I've tried but not working: I cannot add a try-catch block to my Application.Run() code line. Because I am an add-in, that code fragment is in the application. System.Windows.Forms.Application.ThreadException is not working too. There might not be an WinForm Application exists. (WPF hosting in unmanaged code.) AppDomain.CurrentDomain.UnhandledException is not working too. Because maybe it's handled by the Application itself. It just doesn't enter my code. So, any ideas for this situation?

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• Proper snowball analyzer configuration when using Grails Searchable Plugin

  - by Wirsbro

  To improve stemming we want to switch from the default analyzer to snowball, however, having a lot of difficulty with the proper settings and would appreciate any help. In Environment: - Sun's Java 1.6.16 - Grails 1.2.2 - Searchable Plug-In 0.5.5 Config.groovy: Have tried both settings: compassSettings = ['compass.engine.analyzer.stemmed.type': 'snowball', 'compass.engine.analyzer.stemmed.name': 'English'] compassSettings = ['compass.engine.analyzer.snowball.type': 'snowball', 'compass.engine.analyzer.snowball.name': 'English', 'compass.engine.analyzer.search.type': 'snowball', 'compass.engine.analyzer.search.name': 'English'] Search.groovy - The Invocation: def searchResult = searchableService.search(params.q, withHighlighter: { highlighter, index, sr if (!sr.highlights) { sr.highlights = [] } try { sr.highlights[index] = highlighter.fragments("content")[0..2].join(" ") } catch (IndexOutOfBoundsException ex) { sr.highlights[index] = highlighter.fragment("content") } }) def suggestion = searchableService.suggestQuery(params.q) if (suggestion != params.q) { searchResult.suggestedQuery = suggestion }

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• Regex to detect a proper permalink?

  - by Fedor

  These permalinks above are rerouted to my page: page.php?permalink=events/foo page.php?permalink=events/foo/ page.php?permalink=ru/events/foo page.php?permalink=ru/events/foo/ The events is dynamic, it could be specials or packages. My dilemma is basically; I need to detect an empty link in order so I can feed a robots no index meta tag in the case of: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events I can't use a simple pattern such as [a-zA-Z]+\/?(.+)/ since it won't work on the i18n permalinks. What regex could I use which would detect this, using $_GET['permalink'] as the reference to the permalinks? And avoid false positives? Update: Empty link means there's no fragment after the "events/" part. These are empty: page.php?permalink=events page.php?permalink=events/ page.php?permalink=ru/events/ page.php?permalink=ru/events

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• Help with Strings in C

  - by Anon

  Given the char * variables name1 , name2 , and name3 , write a fragment of code that assigns the largest value to the variable max (assume all three have already been declared and have been assigned values). I've tried and came up with this: if ((strcmp(name1,name2)0)&&(strcmp(name1,name3)0)){ max=name1; } else if ((strcmp(name2,name1)0)&&(strcmp(name2,name3)0)){ max=name2; } else if ((strcmp(name3,name1)0)&&(strcmp(name3,name2)0)){ max=name3; } However, I get this error Your code is incorrect. You are not handling the situation                where two or more strings are equal.

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• QPainter paints garbage

  - by DSblizzard

  Fragment of program code: def add_link(Item0Num, Item1Num): global Mw, View # Mw - MainWindow if Item0Num != Item1Num and not link_exists(Item0Num, Item1Num): append( links_to(Item1Num), Item0Num ) append( links_from(Item0Num), Item1Num ) LinkGi = TLinkGi() Mw.Scene.addItem(LinkGi) LinkGi.setZValue(200) LinkGi.scale(1 / View.Scale, 1 / View.Scale) LinkGi.Item0Num = Item0Num LinkGi.Item1Num = Item1Num class TLinkGi(QGraphicsItem): def paint(self, Painter, StyleOptionGraphicsItem, Widget): global Mw, View Pen = QPen(Qt.black, 1) Painter.setPen(Pen) X0, Y0 = task_center(self.Item0Num) self.setPos(X0, Y0) X1, Y1 = task_center(self.Item1Num) X, Y = int( (X1 - X0) * View.Scale ), int( (Y1 - Y0) * View.Scale ) Painter.drawLine(0, 0, X, Y) #Mw.Scene.update(0, 0, Plan.Size, Plan.Size) # (1) #Mw.gvMain.repaint() # (2) def boundingRect(self): global View Rect = QRectF(0, 0, Plan.Size, Plan.Size) return Rect This paints such garbage: http://img697.imageshack.us/content_round.php?page=done&l=img697/5395/qpaintergarbage1.jpg When lines (1) and (2) are uncommented things doesn't become much better: http://img63.imageshack.us/content_round.php?page=done&l=img63/9693/qpaintergarbage0.jpg Please help me to solve this problem.

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• Using LINQ to XML, how can I join two sets of data based on ordinal position?

  - by Donald Hughes

  Using LINQ to XML, how can I join two sets of data based on ordinal position? <document> <set1> <value>A</value> <value>B</value> <value>C</value> </set1> <set2> <value>1</value> <value>2</value> <value>3</value> </set2> </document> Based on the above fragment, I would like to join the two sets together such that "A" and "1" are in the same record, "B" and "2" are in the same record, and "C" and "3" are in the same record.

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• Nitrogen: changing targetID breaks lightbox

  - by dewd

  I'm using Nitrogen & lightbox. I'm looking for some guidance after spending way too long trying to understand why a working example breaks as soon as I change the targetID of a lightbox. The fragment below works if I use "name_dialog" or "share_dialog", but not if I use "compose_dialog". I've looked through the source and style sheets, but have not found where those two are defined any differently than what I'm trying to do. In my .hrl: ... -record (compose_dialog, { ?ELEMENT_BASE(compose_dialog_element) }). .. In my element module: ... reflect() -> record_info(fields, compose_dialog). render_element(_HtmlID, _Record) -> #lightbox { id=compose_lightbox, style="display: none;", body = [ .. show() -> wf:wire(compose_lightbox, #show {}).

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• Nitrogen: changing targetID breaks lightbox

  - by dewd

  I'm using Nitrogen & lightbox. I'm looking for some guidance after spending way too long trying to understand why a working example breaks as soon as I change the targetID of a lightbox. The fragment below works if I use "name_dialog" or "share_dialog", but not if I use "compose_dialog". I've looked through the source and style sheets, but have not found where those two are defined any differently than what I'm trying to do. In my .hrl: ... -record (compose_dialog, { ?ELEMENT_BASE(compose_dialog_element) }). .. In my element module: ... reflect() -> record_info(fields, compose_dialog). render_element(_HtmlID, _Record) -> #lightbox { id=compose_lightbox, style="display: none;", body = [ .. show() -> wf:wire(compose_lightbox, #show {}).

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• Using OpenGL drawing operations in an object-oriented setting?

  - by Lion Kabob

  I've been plowing through basic shaders and whatnot for an application I'm writing, and I've been having trouble figuring out a high-level organization for the drawing calls. I'm thinking of having a singleton class which implements a number of basic drawing operations, taking data from "user" classes and passing that to the appropriate opengl calls. I'm wondering how people do this when writing their own applications, as the internet is chock full of basic "Your first shader" tutorials, but very little on suggested organization of drawing code. My particular environment is targeted at iPad/OpenGL ES 2.0, but I think the question stands for most environments.

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• Different NSTimeZone names being returned

  - by Michael Waterfall

  I've noticed that on some devices the NSTimeZone's name method for a particular timezone can return different values. When testing the Brisbane time zone, my device returns @"Australia/Brisbane" whereas another user's device returns "Etc/GMT-10". Both iPhone's are running 3.1.2. The Date and Time Programming Guide for Cocoa states that: timeZoneWithName: The name passed to this method may be in any of the formats understood by the system, for example EST, Etc/GMT-2, America/Argentina/Buenos_Aires, Europe/Monaco, or US/Pacific, as shown in the following code fragment. I'd just like to know what could determine which value is used? The device? The language?

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• c# inheriting generic collection and serialization...

  - by Stecy

  Hi, The setup: class Item { private int _value; public Item() { _value = 0; } public int Value { get { return _value; } set { _value = value; } } } class ItemCollection : Collection<Item> { private string _name; public ItemCollection() { _name = string.Empty; } public string Name { get {return _name;} set {_name = value;} } } Now, trying to serialize using the following code fragment: ItemCollection items = new ItemCollection(); ... XmlSerializer serializer = new XmlSerializer(typeof(ItemCollection)); using (FileStream f = File.Create(fileName)) serializer.Serialize(f, items); Upon looking at the resulting XML I see that the ItemCollection.Name value is not there! I think what may be happening is that the serializer sees the ItemCollection type as a simple Collection thus ignoring any other added properties... Is there anyone having encountered such a problem and found a solution? Regards, Stécy

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• What is the correct way to specify dimensions in DIP from Java code ?

  - by Pavel Lahoda

  Trying to digest docs about design Multiple resolutions (http://d.android.com/guide/practices/screens_support.html#dips-pels) I found that it is possible to set dimensions of my interface elements in XML layouts using DIPs as in following fragment : "android:layout_width="10dip" But all Java interface takes integer as arguments and there is no way to specify dimensions in DIPs. What is the correct way to calculate this ? I figured that I have to use property density of DisplayMetrics class but is this a correct way ? May I relly that formula : pixels * DisplayMetrics.density = dip is always correct ? Will there be API in DIPs for Java ?

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• Encode complex number as RGB pixel and back

  - by Vi

  How is it better to encode a complex number into RGB pixel and vice versa? Probably (logarithm of) an absolute value goes to brightness and an argument goes to hue. Desaturated pixes should receive randomized argument in reverse transformation. Something like: 0 - (0,0,0) 1 - (255,0,0) -1 - (0,255,255) 0.5 - (128,0,0) i - (255,255,0) -i - (255,0,255) (0,0,0) - 0 (255,255,255) - e^(i * random) (128,128,128) - 0.5 * e^(i *random) (0,128,128) - -0.5 Are there ready-made formulas for that? Edit: Looks like I just need to convert RGB to HSB and back. Edit 2: Existing RGB - HSV converter fragment: if (hsv.sat == 0) { hsv.hue = 0; // ! return hsv; } I don't want 0. I want random. And not just if hsv.sat==0, but if it is lower that it should be ("should be" means maximum saturation, saturation that is after transformation from complex number).

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• Escape characters during paste in vim

  - by Michael Anderson

  I copy stuff from output buffers into C++ code I'm working on in vim. Often this output gets stuck into strings. And it'd be nice to be able to escape all the control characters automatically rather than going back and hand editing the pasted fragment. As an example I might copy something like this: error in file "foo.dat" And need to put it into something like this std::string expected_error = "error in file \"foo.dat\"" I'm thinking it might be possible to apply a replace function to the body of the last paste using the start and end marks of the last paste, but I'm not sure how to make it fly.

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• static arrays defined with unspecified size, empty brackets?

  - by ahmadabdolkader

  For the C++ code fragment below: class Foo { int a[]; // no error }; int a[]; // error: storage size of 'a' isn't known void bar() { int a[]; // error: storage size of 'a' isn't known } why isn't the member variable causing an error too? and what is the meaning of this member variable? I'm using gcc version 3.4.5 (mingw-vista special) through CodeBlocks 8.02. On Visual Studio Express 2008 - Microsoft(R) C/C++ Optimizing Compiler 15.00.30729.01 for 80x86, I got the following messages: class Foo { int a[]; // warning C4200: nonstandard extension used : zero-sized array in struct/union - Cannot generate copy-ctor or copy-assignment operator when UDT contains a zero-sized array }; int a[]; void bar() { int a[]; // error C2133: 'a' : unknown size } Now, this needs some explaination too.

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• Deleting an Image that has been used by a WPF control

  - by Peter

  Hi, I would like to bind an Image to some kind of control an delete it later on. path = @"c:\somePath\somePic.jpg" FileInfo fi = new FileInfo(path); Uri uri = new Uri(fi.FullName, UriKind.Absolute); var img = new System.Windows.Controls.Image(); img.Source = new BitmapImage(uri); Now after this code I would like to delete the file : fi.Delete(); But I cannot do that since the image is being used now. Between code fragment 1 en 2 what can I do to release it? Thanks

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• Drawing Rounded Rectangle in DirectX/3D for 2D

  - by Jengerer

  I'm using Direct3D to draw 2D elements in a C++ application of mine, and it'd be neat if I could create rounded-rectangle GUI elements that were varying in size, but I'm not sure how to do that in the most efficient manner possible. I thought of the "easy" way which would be to have images of the four corners and then just place them in the proper positions, and fill in the rest, but varying radii for the rectangle corners would be a definite plus, and this method doesn't accommodate that feature well. Through my searches I've come across the terms Pixel Shader, Stencil Buffering, and HLSL, but I'm not sure whether these terms are relevant and which one to jump into if so. Thanks in advance, Jengerer

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• Stretch column table in Primefaces

  - by Orange91

  How I can prevent to stretch table when I input long text: Screen: http://zapodaj.net/71821572f2445.jpg.html Meyby is it possible to make the text lines stretched row horizontally? My fragment example table: <p:dataTable id="table" styleClass="table" value="#{userMB.allInactive}" var="inactive" paginator="true" rows="15" rowKey="#{inactive.id}" selection="#{userMB.user}" selectionMode="single" > <f:facet name="header"> Lista kont nieaktywnych </f:facet> <p:column headerText="#{msg.firstName}"> <h:outputText value="#{inactive.firstName}" /> </p:column> I tried <p:column headerText="#{msg.firstName}" width="20px"> styleClass for column: <p:column styleClass="column" headerText="#{msg.firstName}" width="20px"> .column { width: 20px; } but I do not see any change, it does not work.

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• Prevent Visual Studio Web Test from changing request details

  - by keithwarren7

  I have a service that accepts Xmla queries for Analysis services, often times those queries themselves will have a string that contains a fragment that looks something like {{[Time].[Year].[All]}} Recording these requests works fine but when I try to re-run the test I get an error from the test runner... Request failed: Exception occurred: There is no context parameter with the name ' [Time].[Year].[All]' in the WebTestContext This was confusing for some time but when I asked VS to generate a coded version of the test I was able to see the problem a bit better. VS searches for the '{{' and '}}' tokens and makes changes, considering those areas to refer to Context parameters, the code looks like this.Context["\n\t[Time].[Year].[All]"].ToString() Anyone know how to instruct Visual Studio to not perform this replacement operation? Or another way around this issue?

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• C2244 when trying to call the pow function from inline assembly

  - by schrödingers cat

  I would like to call the pow function from inline assembly. The problem is i'm getting error C2244: 'pow' : unable to match function definition to an existing declaration. I'm new to assembly so this may be a trivial question but how do i resolve this? I guess it has something to do with the compiler not beeing able to properly resolve the overload of pow. The following code fragment is causing the error: do_POW: // push first argument to the stack sub esp, size value_type fld qword ptr [ecx] fstp qword ptr [esp] // push second argument to the stack sub esp, size value_type fld qword ptr [ecx - size value_type] fstp qword ptr [esp]and pop fpu stack // call the pow function call pow sub ecx, size value_type fstp qword ptr [ecx] add esp, 2 * size value_type jmp loop_start

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