Search Results

Search found 21436 results on 858 pages for 'draw order'.

Page 504/858 | < Previous Page | 500 501 502 503 504 505 506 507 508 509 510 511  | Next Page >

  • Flash/ActionScript3 crashes on getPixel/32

    - by Quandary
    Question: The below code crashes flash... Why? The crash causing lines seem to be //var uiColor:uint = bmpd.getPixel(i,j); var uiColor:uint = bmpd.getPixel32(i,j); trace("Color: "+ uiColor); I am trying to take a snapshot of a movieclip and iterate through all pixels in the image and get the pixel's color. import flash.display.BitmapData; import flash.geom.*; function takeSnapshot(mc:MovieClip):BitmapData { var sp:BitmapData = new BitmapData(mc.width, mc.height, true, 0x000000); sp.draw(mc, new Matrix(), new ColorTransform(), "normal"); return sp; } var mcMyClip:MovieClip=new MovieClip() var xxx:cMovieClipLoader=new cMovieClipLoader(); xxx.LoadImageAbsSize(mcMyClip,"http://localhost/flash/images/picture.gif", 500,500) //this.addChild(mcMyClip); function WhenImageIsLoaded() { var bmpd:BitmapData=takeSnapshot(mcMyClip); var i,j:uint; for(i=0; i < bmpd.width;++i) { for(j=0; j < bmpd.height;++j) { //var uiColor:uint = bmpd.getPixel(i,j); var uiColor:uint = bmpd.getPixel32(i,j); trace("Color: "+ uiColor); } } var myBitmap:Bitmap = new Bitmap(bmpd); this.addChild(myBitmap); } setTimeout(WhenImageIsLoaded,1000);

    Read the article

  • GAE formpreview

    - by Niklas R
    I'm trying to enable form preview with Google App Engine. Getting the following error message I suspect being mistaken somewhere: ... handler = handler_class() TypeError: __call__() takes at least 2 arguments (1 given) Can you tell what's wrong with my attempt? Here is some of the code. from django.contrib.formtools.preview import FormPreview class AFormPreview(FormPreview): def done(self, request, cleaned_data): # Do something with the cleaned_data, then redirect # to a "success" page. self.response.out.write('Done!') class AForm(djangoforms.ModelForm): text = forms.CharField(widget=forms.Textarea(attrs={'rows':'11','cols':'70','class':'foo'}),label=_("content").capitalize()) def clean(self): cleaned_data = self.clean_data name = cleaned_data.get("name") if not name: raise forms.ValidationError("No name.") # Always return the full collection of cleaned data. return cleaned_data class Meta: model = A fields = ['category','currency','price','title','phonenumber','postaladress','name','text','email'] #change the order ... ('/aformpreview/([^/]*)', AFormPreview(AForm)), UPDATE: Here's a complete app where the preview is not working. Any ideas are most welcome: import cgi from google.appengine.api import users from google.appengine.ext import db from google.appengine.ext import webapp from google.appengine.ext.webapp import template from google.appengine.ext.webapp.util import run_wsgi_app from google.appengine.ext.db import djangoforms class Item(db.Model): name = db.StringProperty() quantity = db.IntegerProperty(default=1) target_price = db.FloatProperty() priority = db.StringProperty(default='Medium',choices=[ 'High', 'Medium', 'Low']) entry_time = db.DateTimeProperty(auto_now_add=True) added_by = db.UserProperty() class ItemForm(djangoforms.ModelForm): class Meta: model = Item exclude = ['added_by'] from django.contrib.formtools.preview import FormPreview class ItemFormPreview(FormPreview): def done(self, request, cleaned_data): # Do something with the cleaned_data, then redirect # to a "success" page. return HttpResponseRedirect('/') class MainPage(webapp.RequestHandler): def get(self): self.response.out.write('<html><body>' '<form method="POST" ' 'action="/">' '<table>') # This generates our shopping list form and writes it in the response self.response.out.write(ItemForm()) self.response.out.write('</table>' '<input type="submit">' '</form></body></html>') def post(self): data = ItemForm(data=self.request.POST) if data.is_valid(): # Save the data, and redirect to the view page entity = data.save(commit=False) entity.added_by = users.get_current_user() entity.put() self.redirect('/items.html') else: # Reprint the form self.response.out.write('<html><body>' '<form method="POST" ' 'action="/">' '<table>') self.response.out.write(data) self.response.out.write('</table>' '<input type="submit">' '</form></body></html>') class ItemPage(webapp.RequestHandler): def get(self): query = db.GqlQuery("SELECT * FROM Item ORDER BY name") for item in query: self.response.out.write('<a href="/edit?id=%d">Edit</a> - ' % item.key().id()) self.response.out.write("%s - Need to buy %d, cost $%0.2f each<br>" % (item.name, item.quantity, item.target_price)) class EditPage(webapp.RequestHandler): def get(self): id = int(self.request.get('id')) item = Item.get(db.Key.from_path('Item', id)) self.response.out.write('<html><body>' '<form method="POST" ' 'action="/edit">' '<table>') self.response.out.write(ItemForm(instance=item)) self.response.out.write('</table>' '<input type="hidden" name="_id" value="%s">' '<input type="submit">' '</form></body></html>' % id) def post(self): id = int(self.request.get('_id')) item = Item.get(db.Key.from_path('Item', id)) data = ItemForm(data=self.request.POST, instance=item) if data.is_valid(): # Save the data, and redirect to the view page entity = data.save(commit=False) entity.added_by = users.get_current_user() entity.put() self.redirect('/items.html') else: # Reprint the form self.response.out.write('<html><body>' '<form method="POST" ' 'action="/edit">' '<table>') self.response.out.write(data) self.response.out.write('</table>' '<input type="hidden" name="_id" value="%s">' '<input type="submit">' '</form></body></html>' % id) def main(): application = webapp.WSGIApplication( [('/', MainPage), ('/edit', EditPage), ('/items.html', ItemPage), ('/itemformpreview', ItemFormPreview(ItemForm)), ], debug=True) run_wsgi_app(application)

    Read the article

  • ZendX_JQuery dialogContainer usage

    - by Kalle Johansson
    Hi ! I'm aming to make use of the ZendX_JQuery dialogContainer view helper, in order to produce a modal window, were users can input specified information(for example send a message). I'm trying to use the dialogContainer view helper in this fashion. First of, include the ZendX library in the applications library folder. Secondly, include the following row in the initViewHelper method within the Bootstrap.php file "$view-addHelperPath('ZendX/JQuery/View/Helper/', 'ZendX_JQuery_View_Helper');" third, adding the following conditional enabling of js in the layout.phtml "<?php if($this->jQuery()->isEnabled()){ $this->jQuery()->setLocalPath($this->baseUrl() .'/js/jquery/js/jquery-1.4.2.min.js') ->setUiLocalPath($this->baseUrl() .'/js/jquery/js/jquery-ui-1.8.custom.min.js') ->addStylesheet($this->baseUrl() .'/js/jquery/css/ui-lightness/jquery-ui-1.8.custom.css'); echo $this->jQuery(); } ?>" fourth, creating my Application_Form_JQueryForm extending ZendX_JQuery_Form "<?php class Application_Form_JQueryForm extends ZendX_JQuery_Form { private $form; public function init() { $this->form = $this->setAction(Zend_Controller_Front::getInstance()->getBaseUrl() . '/index/index') ->setMethod('post'); $this->form->setDecorators(array( 'FormElements', 'Form', array ('DialogContainer', array( 'id' => 'tabContainer', 'style' => 'width: 600px;', 'title' => 'Send a private message to Kalle', 'JQueryParams' => array( 'tabPosition' => 'top', ), )), )); $topic = new Zend_Form_Element_Text('topic'); $topic->setValue('topic') ->setRequired(true) ->setValidators(array('validators' => array( 'validator' => 'StringLength', 'options' => array(1,15) ))) ->setDecorators(array( 'ViewHelper', 'Description', 'Errors', array('HtmlTag', array('tag' => 'dl')))); $textarea = new Zend_Form_Element_Textarea('textarea'); $textarea->setValue('post a comment') ->setAttribs(array( 'rows' => 4, 'cols' => 20 )) ->setRequired(true) ->setValidators(array('validators' => array( 'validator' => 'StringLength', 'options' => array(1,15) ))) ->setDecorators(array( 'ViewHelper', 'Description', 'Errors', array('HtmlTag', array('tag' => 'dl')))); $submit = new Zend_Form_Element_Submit('submit'); $submit->setLabel('Send your comment') ->setDecorators(array( 'ViewHelper', 'Description', 'Errors', array('Description', array('escape' => false, 'tag' => 'span')), array('HtmlTag', array('tag' => 'dl')))) ->setDescription('or <a href="/index/index/send/false">Cancel</a>'); $this->form->addElements(array($topic, $textarea, $submit)); } }" This form is then instanciated in the controllers action method, and called in the view. And so to the problem of mine, no matter what i try, in order to for instance set, the width of the dialogContainer or any other parameter (color, css, height, so on and so forth), this being in the JQueryForm's setDecorator part for the form, i can't seem to get any change whatsoever in the resulting modal when called in the view, any help in the proper direction would be greatly appreciated Thanks in advance, Kalle Johansson

    Read the article

  • Problem with using APACHE-POI to convert PPT to Image

    - by SpawnCxy
    Hi all, I got a problem when I try to use Apache POI project to convert my PPT to Images.My code as follows: FileInputStream is = new FileInputStream("test.ppt"); SlideShow ppt = new SlideShow(is); is.close(); Dimension pgsize = ppt.getPageSize(); Slide[] slide = ppt.getSlides(); for (int i = 0; i < slide.length; i++) { BufferedImage img = new BufferedImage(pgsize.width, pgsize.height, BufferedImage.TYPE_INT_RGB); Graphics2D graphics = img.createGraphics(); //clear the drawing area graphics.setPaint(Color.white); graphics.fill(new Rectangle2D.Float(0, 0, pgsize.width, pgsize.height)); //render slide[i].draw(graphics); //save the output FileOutputStream out = new FileOutputStream("slide-" + (i+1) + ".png"); javax.imageio.ImageIO.write(img, "png", out); out.close(); It works fine except that all Chinese words are converted to some squares.The png image I got is like following image: Then how can I fix this?Thanks in advance!

    Read the article

  • How to pre-load all deployed assemblies for an AppDomain

    - by Andras Zoltan
    Given an App Domain, there are many different locations that Fusion (the .Net assembly loader) will probe for a given assembly. Obviously, we take this functionality for granted and, since the probing appears to be embedded within the .Net runtime (Assembly._nLoad internal method seems to be the entry-point when Reflect-Loading - and I assume that implicit loading is probably covered by the same underlying algorithm), as developers we don't seem to be able to gain access to those search paths. My problem is that I have a component that does a lot of dynamic type resolution, and which needs to be able to ensure that all user-deployed assemblies for a given AppDomain are pre-loaded before it starts its work. Yes, it slows down startup - but the benefits we get from this component totally outweight this. The basic loading algorithm I've already written is as follows. It deep-scans a set of folders for any .dll (.exes are being excluded at the moment), and uses Assembly.LoadFrom to load the dll if it's AssemblyName cannot be found in the set of assemblies already loaded into the AppDomain (this is implemented inefficiently, but it can be optimized later): void PreLoad(IEnumerable<string> paths) { foreach(path p in paths) { PreLoad(p); } } void PreLoad(string p) { //all try/catch blocks are elided for brevity string[] files = null; files = Directory.GetFiles(p, "*.dll", SearchOption.AllDirectories); AssemblyName a = null; foreach (var s in files) { a = AssemblyName.GetAssemblyName(s); if (!AppDomain.CurrentDomain.GetAssemblies().Any( assembly => AssemblyName.ReferenceMatchesDefinition( assembly.GetName(), a))) Assembly.LoadFrom(s); } } LoadFrom is used because I've found that using Load() can lead to duplicate assemblies being loaded by Fusion if, when it probes for it, it doesn't find one loaded from where it expects to find it. So, with this in place, all I now have to do is to get a list in precedence order (highest to lowest) of the search paths that Fusion is going to be using when it searches for an assembly. Then I can simply iterate through them. The GAC is irrelevant for this, and I'm not interested in any environment-driven fixed paths that Fusion might use - only those paths that can be gleaned from the AppDomain which contain assemblies expressly deployed for the app. My first iteration of this simply used AppDomain.BaseDirectory. This works for services, form apps and console apps. It doesn't work for an Asp.Net website, however, since there are at least two main locations - the AppDomain.DynamicDirectory (where Asp.Net places it's dynamically generated page classes and any assemblies that the Aspx page code references), and then the site's Bin folder - which can be discovered from the AppDomain.SetupInformation.PrivateBinPath property. So I now have working code for the most basic types of apps now (Sql Server-hosted AppDomains are another story since the filesystem is virtualised) - but I came across an interesting issue a couple of days ago where this code simply doesn't work: the nUnit test runner. This uses both Shadow Copying (so my algorithm would need to be discovering and loading them from the shadow-copy drop folder, not from the bin folder) and it sets up the PrivateBinPath as being relative to the base directory. And of course there are loads of other hosting scenarios that I probably haven't considered; but which must be valid because otherwise Fusion would choke on loading the assemblies. I want to stop feeling around and introducing hack upon hack to accommodate these new scenarios as they crop up - what I want is, given an AppDomain and its setup information, the ability to produce this list of Folders that I should scan in order to pick up all the DLLs that are going to be loaded; regardless of how the AppDomain is setup. If Fusion can see them as all the same, then so should my code. Of course, I might have to alter the algorithm if .Net changes its internals - that's just a cross I'll have to bear. Equally, I'm happy to consider SQL Server and any other similar environments as edge-cases that remain unsupported for now. Any ideas!?

    Read the article

  • .NET Oracle Provider: Why will my stored proc not work?

    - by Matt
    I am using the Oracle .NET Provider and am calling a stored procedure in a package. The message I get back is "Wrong number or types in call". I have ensured that the order in which the parameters are being added are in the correct order and I have gone over the OracleDbType's thoroughly though I suspect that is where my problem is. Here is the code-behind: //setup intial stuff, connection and command string msg = string.Empty; string oraConnString = ConfigurationManager.ConnectionStrings["OracleServer"].ConnectionString; OracleConnection oraConn = new OracleConnection(oraConnString); OracleCommand oraCmd = new OracleCommand("PK_MOVEMENT.INSERT_REC", oraConn); oraCmd.CommandType = CommandType.StoredProcedure; try { //iterate the array //grab 3 items at a time and do db insert, continue until all items are gone. Will always be divisible by 3. for (int i = 0; i < theData.Length; i += 3) { //3 items hardcoded for now string millCenter = "0010260510"; string movementType = "RECEIPT"; string feedCode = null; string userID = "GRIMMETTM"; string inventoryType = "INGREDIENT"; //set to FINISHED for feed stuff string movementDate = theData[i + 0]; string ingCode = System.Text.RegularExpressions.Regex.Match(theData[i + 1], @"^([0-9]*)").ToString(); string pounds = theData[i + 2].Replace(",", ""); //setup parameters OracleParameter p1 = new OracleParameter("A_MILL_CENTER", OracleDbType.NVarchar2, 10); p1.Direction = ParameterDirection.Input; p1.Value = millCenter; oraCmd.Parameters.Add(p1); OracleParameter p2 = new OracleParameter("A_INGREDIENT_CODE", OracleDbType.NVarchar2, 50); p2.Direction = ParameterDirection.Input; p2.Value = ingCode; oraCmd.Parameters.Add(p2); OracleParameter p3 = new OracleParameter("A_FEED_CODE", OracleDbType.NVarchar2, 30); p3.Direction = ParameterDirection.Input; p3.Value = feedCode; oraCmd.Parameters.Add(p3); OracleParameter p4 = new OracleParameter("A_MOVEMENT_TYPE", OracleDbType.NVarchar2, 10); p4.Direction = ParameterDirection.Input; p4.Value = movementType; oraCmd.Parameters.Add(p4); OracleParameter p5 = new OracleParameter("A_MOVEMENT_DATE", OracleDbType.NVarchar2, 10); p5.Direction = ParameterDirection.Input; p5.Value = movementDate; oraCmd.Parameters.Add(p5); OracleParameter p6 = new OracleParameter("A_MOVEMENT_QTY", OracleDbType.Int64, 12); p6.Direction = ParameterDirection.Input; p6.Value = pounds; oraCmd.Parameters.Add(p6); OracleParameter p7 = new OracleParameter("INVENTORY_TYPE", OracleDbType.NVarchar2, 10); p7.Direction = ParameterDirection.Input; p7.Value = inventoryType; oraCmd.Parameters.Add(p7); OracleParameter p8 = new OracleParameter("A_CREATE_USERID", OracleDbType.NVarchar2, 20); p8.Direction = ParameterDirection.Input; p8.Value = userID; oraCmd.Parameters.Add(p8); OracleParameter p9 = new OracleParameter("A_RETURN_VALUE", OracleDbType.Int32, 10); p9.Direction = ParameterDirection.Output; oraCmd.Parameters.Add(p9); //open and execute oraConn.Open(); oraCmd.ExecuteNonQuery(); oraConn.Close(); } } catch (OracleException oraEx) { msg = "An error has occured in the database: " + oraEx.ToString(); } catch (Exception ex) { msg = "An error has occured: " + ex.ToString(); } finally { //close connection oraConn.Close(); } return msg;

    Read the article

  • Raytracing (LoS) on 3D hex-like tile maps

    - by herenvardo
    Greetings, I'm working on a game project that uses a 3D variant of hexagonal tile maps. Tiles are actually cubes, not hexes, but are laid out just like hexes (because a square can be turned to a cube to extrapolate from 2D to 3D, but there is no 3D version of a hex). Rather than a verbose description, here goes an example of a 4x4x4 map: (I have highlighted an arbitrary tile (green) and its adjacent tiles (yellow) to help describe how the whole thing is supposed to work; but the adjacency functions are not the issue, that's already solved.) I have a struct type to represent tiles, and maps are represented as a 3D array of tiles (wrapped in a Map class to add some utility methods, but that's not very relevant). Each tile is supposed to represent a perfectly cubic space, and they are all exactly the same size. Also, the offset between adjacent "rows" is exactly half the size of a tile. That's enough context; my question is: Given the coordinates of two points A and B, how can I generate a list of the tiles (or, rather, their coordinates) that a straight line between A and B would cross? That would later be used for a variety of purposes, such as determining Line-of-sight, charge path legality, and so on. BTW, this may be useful: my maps use the (0,0,0) as a reference position. The 'jagging' of the map can be defined as offsetting each tile ((y+z) mod 2) * tileSize/2.0 to the right from the position it'd have on a "sane" cartesian system. For the non-jagged rows, that yields 0; for rows where (y+z) mod 2 is 1, it yields 0.5 tiles. I'm working on C#4 targeting the .Net Framework 4.0; but I don't really need specific code, just the algorithm to solve the weird geometric/mathematical problem. I have been trying for several days to solve this at no avail; and trying to draw the whole thing on paper to "visualize" it didn't help either :( . Thanks in advance for any answer

    Read the article

  • PyQt WebKit CSS background image not showing

    - by Enfors
    I'm making a Twitter client with PyQt, which uses WebKit to draw the tweet list. Now I'm trying to use CSS to set a background image in the WebKit widget - but the image won't show up. This is the relevant part of the CSS: body { background-image: url("gradient2.jpg"); } The file name is correctly spelled, and it is located in the same directory as the Python program, which is also where I start the program from (so the image file should be in PWD). To check if WebKit somehow looks for the image in the wrong directory anyway, I ran my program through strace, which creates a log of all system calls made by the program. And surprisingly, the name of the image does not appear in the log - so it seems as if WebKit doesn't even try to find it. To verify that my CSS is used at all by WebKit, I tried changing it to a solid background color instead of an image: body { background: #CCFFCC; } And that works. So I know that the CSS is used, that's not the problem. Could it be that WebKit refuses to use "ordinary" files in the filesystem, and that I somehow have to create some sort of "resource" file containing my image in Qt Designer?

    Read the article

  • Design by contract: predict methods needed, discipline yourself and deal with code that comes to min

    - by fireeyedboy
    I like the idea of designing by contract a lot (at least, as far as I understand the principal). I believe it means you define intefaces first before you start implementing actual code, right? However, from my limited experience (3 OOP years now) I usually can't resist the urge to start coding pretty early, for several reasons: because my limited experience has shown me I am unable to predict what methods I will be needing in the interface, so I might as well start coding right away. or because I am simply too impatient to write out the whole interfaces first. or when I do try it, I still wind up implementing bits of code already, because I fear I might forget this or that imporant bit of code, that springs to mind when I am designing the interfaces. As you see, especially with the last two points, this leads to a very disorderly way of doing thing. Tasks get mixed up. I should draw a clear line between designing interfaces and actual coding. If you, unlike me, are a good/disciplined planner, as intended above, how do you: ...know the majority of methods you will be needing up front so well? Especially if it's components that implement stuff you are not familiar with yet. ...keep yourself from resisting the urge to start coding right away? ...deal with code that comes to mind when you are designing the intefaces?

    Read the article

  • Qt Object Linker Problem " undefined reverence to vtable"

    - by Thomas
    This is my header: #ifndef BARELYSOCKET_H #define BARELYSOCKET_H #include <QObject> //! The First Draw of the BarelySocket! class BarelySocket: public QObject { Q_OBJECT public: BarelySocket(); public slots: void sendMessage(Message aMessage); signals: void reciveMessage(Message aMessage); private: // QVector<Message> reciveMessages; }; #endif // BARELYSOCKET_H This is my class: #include <QTGui> #include <QObject> #include "type.h" #include "client.h" #include "server.h" #include "barelysocket.h" BarelySocket::BarelySocket() { //this->reciveMessages.clear(); qDebug("BarelySocket::BarelySocket()"); } void BarelySocket::sendMessage(Message aMessage) { } void BarelySocket::reciveMessage(Message aMessage) { } I get the Linker Problem : undefined reference to 'vtable for barelySocket' This should mean, i have a virtual Function not implemented. But as you can see, there is non. I comment the vector cause that should solve the Problem, but i does not. The Message is a complex struct, but even converting it to int did not solve it. I searched Mr G but he could not help me. Thank you for your support, Thomas

    Read the article

  • Creating a shim Stream

    - by spender
    A decompression API that I am using has the following API: Decode(Stream inStream,Stream outStream) I'd like to create a wrapper around this API, such that I can create my own Stream class which offers up the decoded data. Stream decodedStream=new BlaDecodeStream(inStream); So that I can than use this stream as a parameter to the XmlReader constructor in the same way one might use the System.IO.Compression.GZipStream. As far as I can tell, the only other option is set outStream stream to a MemoryStream or to a FileStream and go in two hops. The files I am dealing with are enormous, so neither of these options are particularly attractive. Before I go reinventing the wheel, is there any prior art that I might be able to draw from, or something in the BCL I might have missed? The CircularStream implementation here would go some of the way to helping, but I'm really looking for something similar that would block (as opposed to over/underrun) when the Stream's internal buffer is 'empty' when reading from it and block when the internal buffer is full when writing to it. In this way it could serve as parameter outStream and simultaneously (i.e. from another thread) could be read from by the XmlReader.

    Read the article

  • Flash/Flex: "Warning: filter will not render" problem

    - by davidemm
    In my flex application, I have a custom TitleWindow that pops up in modal fashion. When I resize the browser window, I get this warning: Warning: Filter will not render. The DisplayObject’s filtered dimensions (1286, 107374879) are too large to be drawn. Clearly, I have nothing set with a height of 107374879. After that, any time I mouse over anything in the Flash Player (v. 10), the CPU churns at 100%. When I close the TitleWindow, the problem subsides. Sadly, the warning doesn't seem to indicate which DisplayObject object is too large to draw. I've tried attaching explicit height/widths to the TitleWindow and the components within, but still no luck. [Edit] The plot thickens: I found that the problem only occures when I set the PopUpManager's createPopUp modal parameter to "true." I don't see the behavior when modal is set to "false." It's failing while applying the graying filter to other components that comes from being modal. Any ideas how I can track down the one object that has not been initialized but is being filter during the modal phase? Thanks for reading.

    Read the article

  • How to prevent latex memory overflow

    - by drasto
    I've got a latex macro that makes small pictures. In that picture I need to draw area. Borders of that area are quadratic bezier curves and that area is to be filled. I did not know how to do it so currently I'm "filling" the area by drawing a plenty of bezier curves inside it... This slows down typeseting and when a macro is used multiple times (so tex is drawing really a lot of quadratic bezier curves) it produces following error: ! TeX capacity exceeded, sorry [main memory size=3000000]. How can I prevent this error ? (by freeing memory after macro or such...) Or even better how do I fill the area determined by two quadratic bezier curves? Code that produces error: \usepackage{forloop} \usepackage{picture} \usepackage{eepic} ... \linethickness{\lineThickness\unitlength}% \forloop[\lineThickness]{cy}{\cymin}{\value{cy} < \cymax}{% \qbezier(\ax, \ay)(\cx, \value{cy})(\bx, \by)% }% Here are some example values for variables: \setlength{\unitlength}{0.01pt} \lineThickness=20 %cy is just a counter - inital value is not important \cymin=450 \cymax=900 %from following only the difference between \ax and \bx is important \ax=0 \ay=0 \bx=550 \by=0 Note: To reproduce the error this code have to execute approximately 150 times (could be more depending on your latex memory settings). Thanks a lot for any help

    Read the article

  • like exec command in silverlight(save and load properties of Elements dynamically)

    - by Meysam Javadi
    i have some element in my container and want to save all properties of this elements. i list this element by VisualTreeHelper and save its attributes in DB, question is that how to retrieve this properties and affect them? i think that The Silverlight have some statement that behave like Exec in Sql-Server. i save properties in one line that delimited by semicolon.(if you have any suggestion ,appreciate) Edit: suppose this scenario: End-User choose a tool from Mytoolbox(a container like Grid) ,a dialog shown its properties for creation and finally draw Grid . in resumption he/she choose one element(like Button) and drop it on one of the grid's cell. now i want to save workspace that he/she created! My RootLayout have one container control so any of element are child of this.HERETOFORE i want create one string that contain all general properties(not all of them) and save to DB, and when i load this control, i create an element by the type that i saved and affect it by the properties that i saved; with something like EXEC command. is this possible ? have you new approach for this scenario(Guide me with example please).

    Read the article

  • How to keep text inside a circle using Cairo?

    - by miguelrios
    I a drawing a graph using Cairo (pycairo specifically) and I need to know how can I draw text inside a circle without overlapping it, by keeping it inside the bounds of the circle. I have this simple code snippet that draws a letter "a" inside the circle: ''' Created on May 8, 2010 @author: mrios ''' import cairo, math WIDTH, HEIGHT = 1000, 1000 #surface = cairo.PDFSurface ("/Users/mrios/Desktop/exampleplaces.pdf", WIDTH, HEIGHT) surface = cairo.ImageSurface (cairo.FORMAT_ARGB32, WIDTH, HEIGHT) ctx = cairo.Context (surface) ctx.scale (WIDTH/1.0, HEIGHT/1.0) # Normalizing the canvas ctx.rectangle(0, 0, 1, 1) # Rectangle(x0, y0, x1, y1) ctx.set_source_rgb(255,255,255) ctx.fill() ctx.arc(0.5, 0.5, .4, 0, 2*math.pi) ctx.set_source_rgb(0,0,0) ctx.set_line_width(0.03) ctx.stroke() ctx.arc(0.5, 0.5, .4, 0, 2*math.pi) ctx.set_source_rgb(0,0,0) ctx.set_line_width(0.01) ctx.set_source_rgb(255,0,255) ctx.fill() ctx.set_source_rgb(0,0,0) ctx.select_font_face("Georgia", cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD) ctx.set_font_size(1.0) x_bearing, y_bearing, width, height = ctx.text_extents("a")[:4] print ctx.text_extents("a")[:4] ctx.move_to(0.5 - width / 2 - x_bearing, 0.5 - height / 2 - y_bearing) ctx.show_text("a") surface.write_to_png ("/Users/mrios/Desktop/node.png") # Output to PNG The problem is that my labels have variable amount of characters (with a limit of 20) and I need to set the size of the font dynamically. It must fit inside the circle, no matter the size of the circle nor the size of the label. Also, every label has one line of text, no spaces, no line breaks. Any suggestion?

    Read the article

  • How to resize a Flot graph when its containing div changes size

    - by Will Gorman
    I'm using the Flot graphing library jQuery plugin and I haven't found a good way to handle resizing the graph when it's containing <div> changes size (for example, due to window resizing). When handling the onresize event, I've made sure that the width and height of the containing <div>are updated to the correct size and then tried calling both setupGrid and draw on the plot object but with no effect. I've had some success with the approach of just removing and readding the containing <div> and replotting the graph in it. However, this seems to be prone to getting stuck in infinite resize event loops if I have to add other <div> elements to the document at the same time (like for tooltips for the graph) as I'm guessing those can trigger resize events as well? Is there a good way to handle it that I'm missing? (I'm also using ExplorerCanvas for IE in order to be able to use Flot, if that might have anything to do with it. I haven't really tried in any other browsers yet)

    Read the article

  • C# - WinForms - Exception Handling for Events

    - by JustLooking
    Hi all, I apologize if this is a simple question (my Google-Fu may be bad today). Imagine this WinForms application, that has this type of design: Main application - shows one dialog - that 1st dialog can show another dialog. Both of the dialogs have OK/Cancel buttons (data entry). I'm trying to figure out some type of global exception handling, along the lines of Application.ThreadException. What I mean is: Each of the dialogs will have a few event handlers. The 2nd dialog may have: private void ComboBox_SelectedIndexChanged(object sender, EventArgs e) { try { AllSelectedIndexChangedCodeInThisFunction(); } catch(Exception ex) { btnOK.enabled = false; // Bad things, let's not let them save // log stuff, and other good things } } Really, all the event handlers in this dialog should be handled in this way. It's an exceptional-case, so I just want to log all the pertinent information, show a message, and disable the okay button for that dialog. But, I want to avoid a try/catch in each event handler (if I could). A draw-back of all these try/catch's is this: private void someFunction() { // If an exception occurs in SelectedIndexChanged, // it doesn't propagate to this function combobox.selectedIndex = 3; } I don't believe that Application.ThreadException is a solution, because I don't want the exception to fall all the way-back to the 1st dialog and then the main app. I don't want to close the app down, I just want to log it, display a message, and let them cancel out of the dialog. They can decide what to do from there (maybe go somewhere else in the app). Basically, a "global handler" in between the 1st dialog and the 2nd (and then, I suppose, another "global handler" in between the main app and the 1st dialog). Thanks.

    Read the article

  • Call bindings for DependencyObject when DependencyProperites are changed

    - by melculetz
    Is there a way to notify a DependencyObject's bindinigs when the inner DependencyProperties have changed? For example, I have this class: public class BackgroundDef : DependencyObject { public static readonly DependencyProperty Color1Property = DependencyProperty.Register("Color1", typeof(Color), typeof(Background), new UIPropertyMetadata(Colors.White)); public static readonly DependencyProperty UseBothColorsProperty = DependencyProperty.Register("UseBothColors", typeof(bool), typeof(Background), new UIPropertyMetadata(false)); public static readonly DependencyProperty Color2Property = DependencyProperty.Register("Color2", typeof(Color), typeof(Background), new UIPropertyMetadata(Colors.White)); public Color Color1 { set { SetValue(Color1Property, value); } get { return (Color)GetValue(Color1Property); } } public bool UseBothColors { set { SetValue(UseBothColorsProperty, value); } get { return (bool)GetValue(UseBothColorsProperty); } } public Color Color2 { set { SetValue(Color2Property, value); } get { return (Color)GetValue(Color2Property); } } } For which I have 3 separate two-way bindings that set the values for Color1, Color2 and UseBothColors. But I also have a binding for a BackgroundDef instance, which should create a Brush and draw the background of a button (either a single color, or two gradient colors). My problem is that the two-way bindings for the DependencyProperties update the properties, but the binding for the class instance is not called, as apparently the entire object does not change. Any idea how I could call the bindings for the DependencyObject when the DependencyProperties are changed?

    Read the article

  • Add KO "data-bind" attribute on $(document).ready

    - by M.Babcock
    Preface I've rarely ever been a JS developer and this is my first attempt at doing something with Knockout.js. The question to follow likely illustrates both points. Backgound I have a fairly complex MVC3 application that I'm trying to get to work with KO (v2.0.0.0). My MVC app is designed to generically control which fields appear in the view (and how they are added to the view). It makes use of partial views to decide what to draw in the view based on the user's permissions (If the user is in group A then show control A, if the user in group B then show control B or possibly if the user is in group A don't include the control at all). Also, my model is very flat so I'm not sure the built-in ability to apply my ViewModel to a specific portion of the view will help. My solution to this problem is to provide an action in my controller that responds with an object in JSON format with that contains the JQuery selector and the content to assign to the "data-bind" attribute and bind the ViewModel to the View in the $(document).ready event using the values provided. Failed Proof-of-concept My first attempt at proving that this works doesn't actually seem to work, and by "doesn't work" I mean it just doesn't bind the values at all (as can be seen in this jsfiddle). I've tried it with the applyBindings inside of the ready event and not, but it doesn't seem to make any bit of difference. Question What am I doing wrong? Or is this just not something that can work with KO (though I've seen at least one example online doing the same thing and it supposedly works)? Like I said in the preface, I've only ever pretended to be a JS developer (though I've generally gotten it to work in the past) so I'm at a loss where to start trying to figure out what I'm doing wrong. Hopefully this isn't a real noob question.

    Read the article

  • XNA Reach profile with VMWare - Vertex Buffers not working?

    - by Nektarios
    Running XNA app, using Reach profile, in VMWare Fusion host OS Mac OSX, VM is Windows XP SP 3 (my dual-boot OS). Running on MacBook Pro w/NVidia 320M graphics card When I am booted in to XP natively, my code works. The code is drawing cubes that are set up using vertex buffers When another friend runs this same code on Windows 7, it also works for him just fine When I am running my code in the VM, it doesn't work. I have billboarding sprites running in a shader program and this part displays fine. I get no crashing or errors, the geometry just doesn't appear. I tried Debug and Release. This is very basic operation so I'm thinking VMWare isn't the problem, but it's my code.... My init code: var vertexArray = verts.ToArray(); var indexArray = indices.ToArray(); indexBuffer = new IndexBuffer(GraphicsDevice, typeof(Int16), indexArray.Length, BufferUsage.WriteOnly); indexBuffer.SetData(indexArray); vertexBuffer = new VertexBuffer(GraphicsDevice, typeof(VertexPositionColor), vertexArray.Length, BufferUsage.WriteOnly); vertexBuffer.SetData(vertexArray); My Draw code: // problem isn't here, tried no cull GraphicsDevice.RasterizerState = RasterizerState.CullClockwise; GraphicsDevice.BlendState = BlendState.AlphaBlend; GraphicsDevice.DepthStencilState = new DepthStencilState() { DepthBufferEnable = true }; // Update View and Projection TileEffect.View = ((Game1)Game).Camera.View; TileEffect.Projection = ((Game1)Game).Camera.Projection; TileEffect.CurrentTechnique.Passes[0].Apply(); GraphicsDevice.SetVertexBuffer(vertexBuffer); GraphicsDevice.Indices = indexBuffer; GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList, 0, 0, indices.Count, 0, indices.Count / 3); For LoadContent: TileEffect = new BasicEffect(GraphicsDevice) { World = Matrix.Identity, View = ((Game1)Game).Camera.View, Projection = ((Game1)Game).Camera.Projection, VertexColorEnabled = true };

    Read the article

  • Track "commands" send to WPF window by touchpad (Bamboo)

    - by Christian
    Hi, I just bought a touchpad wich allows drawing and using multitouch. The api is not supported fully by windows 7, so I have to rely on the build in config dialog. The basic features are working, so if I draw something in my WPF tool, and use both fingers to do a right click, I can e.g. change the color. What I want to do now is assign other functions to special features in WPF. Does anybody know how to find out in what way the pad communicates with the app? It works e.g. in Firefox to scroll, like it should (shown on this photo). But I do not know how to hookup the scroll event, I tried a Scrollviewer (which ignores my scroll attempts) and I also hooked up an event with the keypressed, but it does not fire (I assume the pad does not "press a key" but somehow sends the "scroll" command direclty. How can I catch that command in WPF? Thanks a lot, Chris [EDIT] I got the scroll to work, but only up and down, not left and right. It was just a stupid "listbox in scrollviewer" mistake. But still not sure about commands like ZOOM in (which is working even in paint).. Which API contains such things? [EDIT2] Funny, the zoom works in Firefox, the horizontal scrolling does not. But, in paint, the horizontal scrolling works... [EDIT 3] Just asked in the wacom forum, lets see about vendor support reaction time... http://forum.wacom.eu/viewtopic.php?f=4&t=1939 Here is a picture of the config surface to get the idea what I am talking about: (Bamboo settings, I try to catch these commands in WPF)

    Read the article

  • Need help making a check statement to make sure al the controls are not blank

    - by Michael Quiles
    This is for a tic tac toe game. I need help making a check statement to see if all the controls' Texts are non-blank, and if they are, you have a draw (if someone had won the previous code would have discovered that). Can you give me a good example using my code. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Drawing; namespace MyGame { public class Result1 { static private int[,] Winners = new int[,] { // main gameplay Ex: if x is on 0,1,2 x is the winner {0,1,2}, {3,4,5}, {6,7,8}, {0,3,6}, {1,4,7}, {2,5,8}, {0,4,8}, {2,4,6}, }; static public bool CheckWinner(Button[] myControls) { //bolean statement to check for the winner bool gameOver = false; for (int i = 0; i < 8; i++) { int a = Winners[i, 0]; int b = Winners[i, 1]; int c = Winners[i, 2]; Button b1 = myControls[a], b2 = myControls[b], b3 = myControls[c]; if (b1.Text == "" || b2.Text == "" || b3.Text == "") continue; if (b1.Text == b2.Text && b2.Text == b3.Text) { b1.BackColor = b2.BackColor = b3.BackColor = Color.LightCoral; b1.Font = b2.Font = b3.Font = new System.Drawing.Font("Microsoft Sans Serif", 32F, System.Drawing.FontStyle.Italic & System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); gameOver = true; xWinnerForm xWinnerForm = new xWinnerForm(); xWinnerForm.ShowDialog(); //only works with show not showDialog method gets overloaded (b1.Text + " is the Winner"); to get around this I added and image showing the last player } } return gameOver; } } }

    Read the article

  • QT- QImage and multi-threading problem.

    - by umanga
    Greetings all, Please refer to image at : http://i48.tinypic.com/316qb78.jpg We are developing an application to extract cell edges from MRC images from electron microscope. MRC file format stores volumetric pixel data (http://en.wikipedia.org/wiki/Voxel) and we simply use 3D char array(char***) to load and store data (gray scale values) from a MRC file. As shown in the image,there are 3 viewers to display XY,YZ and ZX planes respectively. Scrollbars on the top of the viewers use to change the image slice along an axis. Here is the steps we do when user changes the scrollbar position. 1) get the new scrollbar value.(this is the selected slice) 2) for the relavant plane (YZ,XY or ZX), generate (char* slice;) array for the selected slice by reading 3D char array (char***) 3) Create a new QImage* (Format_RGB888) and set pixel values by reading 'slice' (using img-setPixel(x,y,c);) 4) This new QImage* is painted in the paintEvent() method. We are going to execute "edge-detection" process in a seperate thread since it is an intensive process.During this process we need to draw detected curve (set of pixels) on top of above QImage*.(as a layer).This means we need to call drawPoint() methods outside the QT thread. Is it the best wayto use QImage for this case? What is the best way to execute QT drawing methods from another thread? thanks in advance,

    Read the article

  • Does anyone have database, programming language/framework suggestions for a GUI point of sale system

    - by Jason Down
    Our company has a point of sale system with many extras, such as ordering and receiving functionality, sales and order history etc. Our main issue is that the system was not designed properly from the ground up, so it takes too long to make fixes and handle requests from our customers. Also, the current technology we are using (Progress database, Progress 4GL for the language) incurs quite a bit of licensing expenses on our customers due to mutli-user license fees for database connections etc. After a lot of discussion it is looking like we will probably start over from scratch (while maintaining the current product at least for the time being). We are looking for a couple of things: Create the system with a nice GUI front end (it is currently CHUI and the application was not built in a way that allows us to redesign the front end... no layering or separation of business logic and gui...shudder). Create the system with the ability to modularize different functionality so the product doesn't have to include all features. This would keep the cost down for our current customers that want basic functionality and a lower price tag. The bells and whistles would be available for those that would want them. Use proper design patterns to make the product easy to add or change any part at any time (i.e. change the database or change the front end without needing to rewrite the application or most of it). This is a problem today because the Progress 4GL code is directly compiled against the database. Small changes in the database requires lots of code recompiling. Our new system will be Linux based, with a possibility of a client application providing functionality from one or more windows boxes. So what I'm looking for is any suggestions on which database and/or framework or programming language(s) someone might recommend for this sort of product. Anyone that has experience in this field might be able to point us in the right direction or even have some ideas of what to avoid. We have considered .NET and SQL Express (we don't need an enterprise level DB), but that would limit us to windows (as far as I know anyway). I have heard of Mono for writing .NET code in a Linux environment, but I don't know much about it yet. We've also considered a Java and MySql based implementation. To summarize we are looking to do the following: Keep licensing costs down on the technology we will use to develop the product (Oracle, yikes! MySQL, nice.) Deliver a solution that is easily maintainable and supportable. A solution that has a component capable of running on "old" hardware through a CHUI front end. (some of our customers have 40+ terminals which would be a ton of cash in order to convert over to a PC). Suggestions would be appreciated. Thanks [UPDATE] I should note that we are currently performing a total cost analysis. This question is intended to give us a couple of "educated" options to look into to include in or analysis. Anyone who could share experiences/suggestions about client/server setups would be appreciated (not just those who have experience with point of sale systems... that would just be a bonus).

    Read the article

  • Creating a UIImage from a rotated UIImageView...

    - by Magic Bullet Dave
    I have a UIImageView with an image in it. I have rotated the image prior to display by setting the transform property of the UIImageView to CGAffineTransformMakeRotation(angle) where angle is the angle in radians. I want to be able to create another UIImage that corresponds to the rotated version that I can see in my view. I am almost there, by rotating the image context I get a rotated image: - (UIImage *) rotatedImageFromImageView: (UIImageView *) imageView { UIImage *rotatedImage; // Get image width, height of the bonuding rectangle CGRect boundingRect = [self getBoundingRectAfterRotation: imageView.bounds byAngle:angle]; // Create a graphics context the size of the boundinf rectangle UIGraphicsBeginImageContext(boundingRect.size); CGContextRef context = UIGraphicsGetCurrentContext(); // Rotate and translate the context CGAffineTransform ourTransform = CGAffineTransformIdentity; ourTransform = CGAffineTransformConcat(ourTransform, CGAffineTransformMakeRotation(angle)); CGContextConcatCTM(context, ourTransform); // Draw the image into the context CGContextDrawImage(context, CGRectMake(0, 0, imageView.image.size.width, imageView.image.size.height), imageView.image.CGImage); // Get an image from the context rotatedImage = [UIImage imageWithCGImage: CGBitmapContextCreateImage(context)]; // Clean up UIGraphicsEndImageContext(); return rotatedImage; } However the image is not rotated about its centre. I have tried all kinds of transforms concatenated with my rotate to get it to rotate around the centre but to no avail. Am I missing a trick? Is this even possible since I am rotating the context not the image? Getting desperate to make this work now, so any help would be appreciated. Dave

    Read the article

< Previous Page | 500 501 502 503 504 505 506 507 508 509 510 511  | Next Page >