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  • Cannot pull correct data from a Javascript array into an HTML form

    - by Isaac
    I am trying to return the description value of the corresponding author name and book title(that are typed in the text boxes). The problem is that the first description displays in the text area no matter what. <h1>Bookland</h1> <div id="bookinfo"> Author name: <input type="text" id="authorname" name="authorname"></input><br /> Book Title: <input type="text" id="booktitle" name="booktitle"></input><br /> <input type="button" value="Find book" id="find"></input> <input type="button" value="Clear Info" id="clear"></input><br /> <textarea rows="15" cols="30" id="destin"></textarea> </div> JavaScript: var bookarray = [{Author: "Thomas Mann", Title: "Death in Venice", Description: "One of the most famous literary works of the twentieth century, this novella embodies" + "themes that preoccupied Thomas Mann in much of his work:" + "the duality of art and life, the presence of death and disintegration in the midst of existence," + "the connection between love and suffering and the conflict between the artist and his inner self." }, {Author: "James Joyce", Title: "A portrait of the artist as a young man", Description: "This work displays an unusually perceptive view of British society in the early 20th century." + "It is a social comedy set in Florence, Italy, and Surrey, England." + "Its heroine, Lucy Honeychurch, struggling against straitlaced Victorian attitudes of arrogance, narroe mindedness and sobbery, falls in love - while on holiday in Italy - with the socially unsuitable George Emerson." }, {Author: "E. M. Forster", Title: "A room with a view", Description: "This book is a fictional re-creation of the Irish writer'sown life and early environment." + "The experiences of the novel's young hero,unfold in astonishingly vivid scenes that seem freshly recalled from life" + "and provide a powerful portrait of the coming of age of a young man ofunusual intelligence, sensitivity and character. " }, {Author: "Isabel Allende", Title: "The house of spirits", Description: "Allende describes the life of three generations of a prominent family in Chile and skillfully combines with this all the main historical events of the time, up until Pinochet's dictatorship." }, {Author: "Isabel Allende", Title: "Of love and shadows", Description: "The whole world of Irene Beltran, a young reporter in Chile at the time of the dictatorship, is destroyed when" + "she discovers a series of killings carried out by government soldiers." + "With the help of a photographer, Francisco Leal, and risking her life, she tries to come up with evidence against the dictatorship." }] function searchbook(){ for(i=0; i &lt; bookarray.length; i++){ if ((document.getElementById("authorname").value &amp; document.getElementById("booktitle").value ) == (bookarray[i].Author &amp; bookarray[i].Title)){ document.getElementById("destin").value =bookarray[i].Description return bookarray[i].Description } else { return "Not Found!" } } } document.getElementById("find").addEventListener("click", searchbook, false)

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  • The correct way to Fire-and-Forget an asynchronous delegate

    - by Programming Hero
    Consider me rusty on the subject of asynchronous delegates. If I want to call a method asynchronously, in a fire-and-forget style, is this an appropriate way to do it? Action action = DoSomething; action.BeginInvoke(action.EndInvoke, null); The DoSomething() method catches all exceptions and deals with them internally. Is the call to EndInvoke appropriate? Required? Is there a clearer way to achieve the same behaviour?

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  • Correct way to load image into UIWebView from NSData object

    - by rustyshelf
    I have downloaded a gif image into an NSData object (I've checked the contents of the NSData object and it's definitely populated). Now I want to load that image into my UIWebView. I've tried the following: [webView loadData:imageData MIMEType:@"image/gif" textEncodingName:nil baseURL:nil]; but I get a blank UIWebView. Loading the image from the same URL directly works fine: NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:imageUrl]]; [imageView loadRequest:request]; Do I need to set the textEncodingName to something, or am I doing something else wrong? I want to load the image manually so I can report progress to the user, but it's an animated gif, so when it's done I want to show it in a UIWebView. Edit: Perhaps I need to wrap my image in HTML somehow? Is there a way to do this without having to save it to disk?

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  • R regex to validate user input is correct.

    - by John
    I'm trying to practice writing better code, so I wanted to validate my input sequence with regex to make sure that the first thing I get is a single letter A to H only, and the second is a number 1 to 12 only. I'm new to regex and not sure what the expression should look like. I'm also not sure what type of error R would throw if this is invalidated? In Perl it would be something like this I think: =~ m/([A-M]?))/) Here is what I have so far for R: input_string = "A1" first_well_row = unlist(strsplit(input_string, ""))[1] # get the letter out first_well_col = unlist(strsplit(input_string, ""))[2] # get the number out

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  • Enable iPhone accelerometer while screen is locked..

    - by kamziro
    So apparently it is possible to keep the processor going processing stuff while the screen is locked, as indicated here: http://stackoverflow.com/questions/1551712/running-iphone-apps-while-in-sleep-mode However, after testing with the example code, UIAccelerometer will just stop giving value as soon as the device is locked pronto. Is there a way to force otherwise?

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  • asp:RadioButtonList doesn't set correct selected item on load

    - by Nir
    I have this code: <asp:RadioButtonList ID="rblExpDate" runat="server" > <asp:ListItem Selected="True" Text="No expiration date"></asp:ListItem> <asp:ListItem Text="Expires on:"></asp:ListItem> </asp:RadioButtonList> that I would like to be always, on page load, to mark the first option ("no expiration date"). However, if the user marks the second option and reloads, the second option is selected, even though I do this on page load: rblExpDate.Items[0].Selected = true; rblExpDate.SelectedIndex = 0; Appreciate your help!

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  • Correct handling of OnMouseWheel events in Ext-GWT

    - by Kevin Loney
    I'm trying to figure out which property of BoxComponentEvent will tell me if the generated OnMouseWheel event was a scroll-up or scroll-down event. I have output the values of all the properties BoxComponentEvent exposes; and all of them (with the exception of the coordinates at which the event took place) stay the same regardless. Google and the Ext-GWT docs have been pretty useless for providing a concrete example. public class MyPanel extends ContentPanel { // ... public MyPanel() { addListener(Events.OnMouseWheel, new Listener<BoxComponentEvent>() { public void handleEvent(BoxComponentEvent be) { // What happens here to distinguish scroll-up and scroll-down? } }); } protected void afterRender() { super.afterRender(); el().addEventsSunk(Events.OnMouseWheel.getEventCode()); } // ... }

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  • Enable 2-way databinding on nested listview

    - by Lars Pedersen
    I have a ASP.NET FormView, that - via an ObjectDataSource - is bound to my EventOrder-object: [Serializable] public class EventOrder { [Serializable] public class OrderTicket { public int Qty { get; set; } public int Id { get { return this.Ticket.Id; } } public Ticket Ticket { get; set; } public double TicketPrice { get; set; } } [Serializable] public class OrderExtra { public int Qty { get; set; } public int Id { get { return this.Extra.Id; } } public Extra Extra { get; set; } } public Event Event { get; set; } public List<OrderTicket> OrderTickets { get; set; } public List<OrderExtra> OrderExtras { get; set; } public UserProfile UserProfile { get; set; } public List<Fee> Fees { get; set; } public List<Discount> Discounts { get; set; } public EventOrder() { this.OrderExtras = new List<OrderExtra>(); this.OrderTickets = new List<OrderTicket>(); this.Fees = new List<Fee>(); this.Discounts = new List<Discount>(); } } In my FormView, I have a bindingexpression on an inner listview for my collection of OrderTickets: <asp:ListView Visible="false" runat="server" DataKeyNames="Id" ID="lvTickets" DataSource='<%# Bind("OrderTickets") %>'> <ItemTemplate> <asp:TextBox ID="TextBox5" Text='<%# Bind("Qty") %>' runat="server"></asp:TextBox> <asp:Label ID="Label1" runat="server" Text='<%# Eval("Ticket.Title") %>'></asp:Label> <asp:Label ID="Label2" runat="server" Text='<%# Eval("TicketPrice") %>'></asp:Label><br /> </ItemTemplate> My problem is that the Qty-property isn't databound to the object when the parent container is updated. Is it possible to have this kind of parent-child relation with 2-way databinding? Can I force the child listview to update it's bound dataobject when I submit the form?

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  • KSoap2 list handling - is this the correct way?

    - by oozoo
    Hello, ksoap-newbie here I have a basic soap service running on glassfish, that returns List<String> like this <?xml version="1.0" encoding="UTF-8"?> <S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"> <S:Body> <ns2:getNamesResponse xmlns:ns2="http://namespace/"> <return>Name1</return> <return>Name2</return> </ns2:getNamesResponse> </S:Body> </S:Envelope> now in ksoap2 (android) I have to iterate the soap-object properties to get my list back: SoapObject result = (SoapObject) envelope.bodyIn; for(int i=0;i<result.getPropertyCount();i++) { list.add(result.getProperty(i)); } is there a better way? I couldn't find any class mapper in my implementation. thanks in advance

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  • AJAX call in for loop won't return values to correct array positions

    - by Heilemann
    I need to get a range of pages using AJAX and put them into an array, where their given place in the array is equal to the i of a for loop (it's a caching-like function for blog pages, and the range of the for loop is entirely variable). I'm doing something akin to the following: var bongo = new Array(); for (i = 0; i < 10; i++) { jQuery.ajax({ type: "GET", url: http://localhost, data: queryString, success: function(request) { bongo[i] = request } }) } The problem is, that unless I add async: false to the .ajax options (which would make it... SJAX?), which causes the requests to basically pause the browser, going against what I'm trying to do, the i in the success callback will always end up being 11, whereas I of course want it to pour the returned data into each slot of the array from 0 to 10. I've tried replacing the line with this: bongo[i] = jQuery.ajax({ type: "GET", url: http://localhost, data: queryString }).responseText But that made no difference.

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  • Programatically enable / disable multitouch finger input?

    - by winSharp93
    I have a multitoch-enabled tablet PC running Windows 7. However, when using the stylus pen and getting too far away from the display, I often accidently hit it with my fingers which causes unwanted mouse-clicks. The solution is navigating to "Control Panel - Pen- and Finger Input - Finger Input" and deactivate the checkbox "Use the finger as an input device" (all titles translated so they might be different on an English windows). Now I am wondering whether I can do this programatically, too, so I would be able to write a little tray app for this. I tried using Process Monitor to find out registry keys, however, I did not find one which really shows the same effect as the checkbox. Does anyone know how to access this property (without using UI-Automation)? Cheers winSharp93

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  • is this correct use of jquery's document.ready?

    - by Haroldo
    The below file contains all the javascript for a page. Performance is the highest priority. Is this the most efficient way? Do all click/hover events need to to be inside the doc.ready? //DOCUMENT.READY EVENTS //--------------------------------------------------------------------------- $(function(){ // mark events as not loaded $('.event').data({ t1_loaded: false, t2_loaded: false, t3_loaded: false, art_req: false }); //mark no events have been clicked $('#wrap_right').data('first_click_made', false); // cal-block event click $('#cal_blocks div.event, #main_search div.event').live('click', function(){ var id = $(this).attr('id').split('e')[1]; event_click(id); }); // jq history $.historyInit(function(hash){ if(hash) { event_click(hash); } }); // search $('#search_input').typeWatch ({ callback: function(){ var q = $('#search_input').attr('value'); search(q); }, wait : 350, highlight : false, captureLength : 2 }); $('#search_input, #main_search div.close').live('click',function(){ $(this).attr("value",""); reset_srch_res(); }); $('#main_search').easydrag(); $('a.dialog').colorbox(); //TAB CLICK -> AJAX LOAD TAB $('#wrap_right .rs_tabs li').live('click', function(){ $this = $(this); var id = $('#wrap_right').data('curr_event'); var tab = parseInt($this.attr('rel')); //hide other tabs $('#rs_'+id+' .tab_body').hide(); //mark current(clicked) tab $('#rs_'+id+' .rs_tabs li').removeClass('curr_tab'); $this.addClass('curr_tab'); //is the tab already loaded and hidden? var loaded = $('#e'+id).data('t'+tab+'_loaded'); //console.log('id: '+id+', tab: '+tab+', loaded: '+loaded); if(loaded === true) { $('#rs_'+id+' .tab'+tab).show(); if (tab == 2) { art_requested(id); } } else { //ajax load in the tab $('#rs_'+id+' .tab'+tab).load('index_files/tab'+tab+'.php?id='+id, function(){ //after load callback if (tab == 1) { $('#rs_' + id + ' .frame').delay(600).fadeIn(600) }; if (tab == 2) { art_requested(id); } }); //mark tab as loaded $('#e'+id).data('t'+tab+'_loaded', true); //fade in current tab $('#rs_'+id+' .tab'+tab).show(); } }) }); // LOAD RS FUNCTIONS //--------------------------------------------------------------------------- function event_click(id){ window.location.hash = id; //mark current event $('#wrap_right').data('curr_event', id); //hide any other events if($('#wrap_right').data('first_click_made') === true) { $('#wrap_right .event_rs').hide(); } //frame loaded before? var loaded = $('#e'+id).data('t1_loaded'); if(loaded === true) { $('#rs_'+id).show(); } else { create_frame(id); } //open/load the first tab $('#rs_'+id+' .t1').click(); $('#wrap_right').data('first_click_made', true); $('#cal_blocks').scrollTo('#e'+id, 1000, {offset: {top:-220, left:0}}); } function create_frame(id){ var art = ents[id].art; var ven = ents[id].ven; var type = ents[id].gig_club; //select colours for tabs if(type == 1){ var label = 'gig';} else if(type == 2){ var label = 'club';} else if(type == 0){ var label = 'other';} //create rs container for this event var frame = '<div id="rs_'+id+'" class="event_rs">'; frame += '<div class="title_strip"></div>'; frame += '<div class="rs_tabs"><ul class="'+label+'"><li class="t1 nav_tab1 curr_tab hand" rel="1"></li>'; if(art == 1){frame += '<li class="t2 nav_tab2 hand" rel="2"></li>';} if(ven == 1){frame += '<li class="t3 nav_tab2 hand" rel="3"></li>';} frame += '</ul></div>'; frame += '<div id="rs_content"><div class="tab_body tab1" ></div>'; if(art == 1){frame += '<div class="tab_body tab2"></div>';} if(ven == 1){frame += '<div class="tab_body tab3"></div>';} frame += '</div>'; frame += '</div>'; $('#wrap_right').append(frame); //mark current event in cal-blocks $('#cal_blocks .event_sel').removeClass('event_sel'); $('#e'+id).addClass('event_sel'); if($('#wrap_right').data('first_click_made') === false) { $('#wrap_right').delay(500).slideDown(); $('#rs_'+id+' .rs_tabs').delay(800).fadeIn(); } }; // FUNCTIONS //--------------------------------------------------------------------------- //check to see if an artist has been requested function art_requested(id){ var art_req = $('#e'+id).data('art_req'); if(art_req !== false) { //alert(art_req); $('#art_'+art_req).click(); } } //scroll artist panes smoothly (scroll bars cause glitches otherwise) function before (){ if(!IE){$('#art_scrollable .bio_etc').css('overflow','-moz-scrollbars-none');} } function after (){ if(!IE){$('#art_scrollable .bio_etc').css('overflow','auto');} } function prep_media_carousel(){ //youtube and soundcloud player $("#rs_content .yt_scrollable a.yt, #rs_content .yt_scrollable a.sc").colorbox({ overlayClose : false, opacity : 0 }); $("#colorbox").easydrag(true); $('#cboxOverlay').remove(); } function make_carousel_scrollable(unique_id){ $('#scroll_'+unique_id).scrollable({ size:1, clickable:false, nextPage:'#r_'+unique_id, prevPage:'#l_'+unique_id }); } function check_l_r_arrows(total, counter, art_id){ //left arrow if(counter > 0) { $('#l_'+art_id).show(); $('#l_'+art_id+'_inactive').hide(); } else { $('#l_'+art_id).hide(); $('#l_'+art_id+'_inactive').show(); } //right arrow if(counter < total-3) { $('#r_'+art_id).show(); $('#r_'+art_id+'_inactive').hide(); } else { $('#r_'+art_id).hide(); $('#r_'+art_id+'_inactive').show(); } } function reset_srch_res(){ $('#main_search').fadeOut(400).children().remove(); } function search(q){ $.ajax({ type: 'GET', url: 'index_files/srch/search.php?q='+q, success: function(e) { $('#main_search').html(e).show(); } }); }

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  • Correct way to perform an update using ADO.Net Entity Model in .net 4

    - by sf
    Hi, I just wanted to clarify if this is the appropriate way to perform an update using a designer generated ADO.NET Entity Model. I was wondering if there was a way to perform an update without creating the sqlMenu object. public class MenusRepository { public void UpdateMenu(Menu menu) { // _context is instantiated in constructor Menu sqlMenu = (from m in _context.Menus where m.MenuId == menu.MenuId select m).FirstOrDefault(); if (sqlMenu == null) throw new ArgumentException("Can't update a Menu which does not exist"); // associate values here sqlMenu.Name = menu.Name; _context.SaveChanges(); } }

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  • Enable debug logging in maven jetty 7 plugin

    - by wds
    I'm running a java webapp with a simple mvn jetty:run, using the latest jetty plugin, but I can't seem to find a way to tell jetty to output DEBUG messages to console (for the embedded jetty instance, not the plugin itself). It's currently outputting only WARN and INFO messages. I've tried setting -DDEBUG and -DVERBOSE, but they don't do anything. I've already had a look at the documentation, but it doesn't seem to cover this.

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  • highcharts correct json input

    - by Linus
    i am trying to do a basic column chart. i have looked the examples but not sure why i do not see any graph (lines). I can see the title and subtitle appear an no javascript errors in firebug. any help please $(function () { var chart; $(document).ready(function() { chart = new Highcharts.Chart({ chart: { renderTo: 'container', type: 'column', events: { load: requestData } }, title: { text: 'Some title' }, subtitle: { text: 'subtitle' }, xAxis: { categories: [], title: { text: null } }, yAxis: { min: 0, title: { text: 'y-Axis', align: 'high' } }, tooltip: { formatter: function() { return ''+ this.series.name +': '+ this.y +' '; } }, plotOptions: { bar: { dataLabels: { enabled: true } } }, legend: { layout: 'vertical', align: 'right', verticalAlign: 'top', x: -100, y: 100, floating: true, borderWidth: 1, backgroundColor: '#FFFFFF', shadow: true }, credits: { enabled: false }, series:[] }); }); function requestData() { $.ajax({ url: 'test.json', success: function(data) { options.series[0].push(data); chart.redraw(); }, cache: false }); } }); my json input file is below [ { name: 'name1', y: [32.6,16.6,1.5] }, { name: 'name2', y: [6.7,0.2,0.6] }, { name: 'name3', y: [1,3.7,0.7] }, { name: 'name4', y: [20.3,8.8,9.5] },{ name: 'name5', y: [21.5,10,7.2] }, { name: 'name6', y: [1.4,1.8,3.7] }, { name: 'name7', y: [8.1,0,0] }, { name: 'name8', y: [28.9,8.9,6.6] } ]

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  • Please help me correct the small bugs in this image editor

    - by Alex
    Hi, I'm working on a website that will sell hand made jewelry and I'm finishing the image editor, but it's not behaving quite right. Basically, the user uploads an image which will be saved as a source and then it will be resized to fit the user's screen and saved as a temp. The user will then go to a screen that will allow them to crop the image and then save it to it's final versions. All of that works fine, except, the final versions have 3 bugs. First is some black horizontal line on the very bottom of the image. Second is an outline of sorts that follows the edges. I thought it was because I was reducing the quality, but even at 100% it still shows up... And lastly, I've noticed that the cropped image is always a couple of pixels lower than what I'm specifying... Anyway, I'm hoping someone whose got experience in editing images with C# can maybe take a look at the code and see where I might be going off the right path. Oh, by the way, this in an ASP.NET MVC application. Here's the code: using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.IO; using System.Linq; using System.Web; namespace Website.Models.Providers { public class ImageProvider { private readonly ProductProvider ProductProvider = null; private readonly EncoderParameters HighQualityEncoder = new EncoderParameters(); private readonly ImageCodecInfo JpegCodecInfo = ImageCodecInfo.GetImageEncoders().Single( c => (c.MimeType == "image/jpeg")); private readonly string Path = HttpContext.Current.Server.MapPath("~/Resources/Images/Products"); private readonly short[][] Dimensions = new short[3][] { new short[2] { 640, 480 }, new short[2] { 240, 0 }, new short[2] { 80, 60 } }; ////////////////////////////////////////////////////////// // Constructor ////////////////////////////////////////// ////////////////////////////////////////////////////////// public ImageProvider( ProductProvider ProductProvider) { this.ProductProvider = ProductProvider; HighQualityEncoder.Param[0] = new EncoderParameter(Encoder.Quality, 100L); } ////////////////////////////////////////////////////////// // Crop ////////////////////////////////////////////// ////////////////////////////////////////////////////////// public void Crop( string FileName, Image Image, Crop Crop) { using (Bitmap Source = new Bitmap(Image)) { using (Bitmap Target = new Bitmap(Crop.Width, Crop.Height)) { using (Graphics Graphics = Graphics.FromImage(Target)) { Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic; Graphics.SmoothingMode = SmoothingMode.HighQuality; Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality; Graphics.CompositingQuality = CompositingQuality.HighQuality; Graphics.DrawImage(Source, new Rectangle(0, 0, Target.Width, Target.Height), new Rectangle(Crop.Left, Crop.Top, Crop.Width, Crop.Height), GraphicsUnit.Pixel); }; Target.Save(FileName, JpegCodecInfo, HighQualityEncoder); }; }; } ////////////////////////////////////////////////////////// // Crop & Resize ////////////////////////////////////// ////////////////////////////////////////////////////////// public void CropAndResize( Product Product, Crop Crop) { using (Image Source = Image.FromFile(String.Format("{0}/{1}.source", Path, Product.ProductId))) { using (Image Temp = Image.FromFile(String.Format("{0}/{1}.temp", Path, Product.ProductId))) { float Percent = ((float)Source.Width / (float)Temp.Width); short Width = (short)(Temp.Width * Percent); short Height = (short)(Temp.Height * Percent); Crop.Height = (short)(Crop.Height * Percent); Crop.Left = (short)(Crop.Left * Percent); Crop.Top = (short)(Crop.Top * Percent); Crop.Width = (short)(Crop.Width * Percent); Img Img = new Img(); this.ProductProvider.AddImageAndSave(Product, Img); this.Crop(String.Format("{0}/{1}.cropped", Path, Img.ImageId), Source, Crop); using (Image Cropped = Image.FromFile(String.Format("{0}/{1}.cropped", Path, Img.ImageId))) { this.Resize(this.Dimensions[0], String.Format("{0}/{1}-L.jpg", Path, Img.ImageId), Cropped, HighQualityEncoder); this.Resize(this.Dimensions[1], String.Format("{0}/{1}-T.jpg", Path, Img.ImageId), Cropped, HighQualityEncoder); this.Resize(this.Dimensions[2], String.Format("{0}/{1}-S.jpg", Path, Img.ImageId), Cropped, HighQualityEncoder); }; }; }; this.Purge(Product); } ////////////////////////////////////////////////////////// // Queue ////////////////////////////////////////////// ////////////////////////////////////////////////////////// public void QueueFor( Product Product, HttpPostedFileBase PostedFile) { using (Image Image = Image.FromStream(PostedFile.InputStream)) { this.Resize(new short[2] { 1152, 0 }, String.Format("{0}/{1}.temp", Path, Product.ProductId), Image, HighQualityEncoder); }; PostedFile.SaveAs(String.Format("{0}/{1}.source", Path, Product.ProductId)); } ////////////////////////////////////////////////////////// // Purge ////////////////////////////////////////////// ////////////////////////////////////////////////////////// private void Purge( Product Product) { string Source = String.Format("{0}/{1}.source", Path, Product.ProductId); string Temp = String.Format("{0}/{1}.temp", Path, Product.ProductId); if (File.Exists(Source)) { File.Delete(Source); }; if (File.Exists(Temp)) { File.Delete(Temp); }; foreach (Img Img in Product.Imgs) { string Cropped = String.Format("{0}/{1}.cropped", Path, Img.ImageId); if (File.Exists(Cropped)) { File.Delete(Cropped); }; }; } ////////////////////////////////////////////////////////// // Resize ////////////////////////////////////////////// ////////////////////////////////////////////////////////// public void Resize( short[] Dimensions, string FileName, Image Image, EncoderParameters EncoderParameters) { if (Dimensions[1] == 0) { Dimensions[1] = (short)(Image.Height / ((float)Image.Width / (float)Dimensions[0])); }; using (Bitmap Bitmap = new Bitmap(Dimensions[0], Dimensions[1])) { using (Graphics Graphics = Graphics.FromImage(Bitmap)) { Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic; Graphics.SmoothingMode = SmoothingMode.HighQuality; Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality; Graphics.CompositingQuality = CompositingQuality.HighQuality; Graphics.DrawImage(Image, 0, 0, Dimensions[0], Dimensions[1]); }; Bitmap.Save(FileName, JpegCodecInfo, EncoderParameters); }; } } } Here's one of the images this produces:

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  • FFmpeg avcodec_find_encoder problem

    - by net
    I'm newbie in ffmpeg. my problem is "avcodec_find_encoder(CODEC_ID_H264);" func always returning null. ffmpeg configure is below on my ubuntu system. ./ffmpeg FFmpeg version SVN-r26306, Copyright (c) 2000-2011 the FFmpeg developers built on Jan 11 2011 10:34:49 with gcc 4.4.5 configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-x11grab libavutil 50.36. 0 / 50.36. 0 libavcore 0.16. 0 / 0.16. 0 libavcodec 52.108. 0 / 52.108. 0 libavformat 52.92. 0 / 52.92. 0 libavdevice 52. 2. 3 / 52. 2. 3 libavfilter 1.72. 0 / 1.72. 0 libswscale 0.12. 0 / 0.12. 0 libpostproc 51. 2. 0 / 51. 2. 0 as you can see, configuration contains --enable-libx264 so I think avcodec_find_encoder(CODEC_ID_H264); have to return something not null... please let me know how to solve this problem? ps) when i compile my test program, using below gcc -o test test.c -lavutil -lavformat -lavcodec -lx264 -lz -lm thanks

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  • correct fisheye distortion

    - by Will
    I have some points that describe positions in a picture taken with a fisheye lens. I've found this description of how to generate a fisheye effect, but not how to reverse it. How do you calculate the radial distance from the centre to go from fisheye to rectilinear? My function stub looks like this: Point correct_fisheye(const Point& p,const Size& img) { // to polar const Point centre = {img.width/2,img.height/2}; const Point rel = {p.x-centre.x,p.y-centre.y}; const double theta = atan2(rel.y,rel.x); double R = sqrt((rel.x*rel.x)+(rel.y*rel.y)); // fisheye undistortion in here please //... change R ... // back to rectangular const Point ret = Point(centre.x+R*cos(theta),centre.y+R*sin(theta)); fprintf(stderr,"(%d,%d) in (%d,%d) = %f,%f = (%d,%d)\n",p.x,p.y,img.width,img.height,theta,R,ret.x,ret.y); return ret; }

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  • Correct XML serialization and deserialization of "mixed" types in .NET

    - by Stefan
    My current task involves writing a class library for processing HL7 CDA files. These HL7 CDA files are XML files with a defined XML schema, so I used xsd.exe to generate .NET classes for XML serialization and deserialization. The XML Schema contains various types which contain the mixed="true" attribute, specifying that an XML node of this type may contain normal text mixed with other XML nodes. The relevant part of the XML schema for one of these types looks like this: <xs:complexType name="StrucDoc.Paragraph" mixed="true"> <xs:sequence> <xs:element name="caption" type="StrucDoc.Caption" minOccurs="0"/> <xs:choice minOccurs="0" maxOccurs="unbounded"> <xs:element name="br" type="StrucDoc.Br"/> <xs:element name="sub" type="StrucDoc.Sub"/> <xs:element name="sup" type="StrucDoc.Sup"/> <!-- ...other possible nodes... --> </xs:choice> </xs:sequence> <xs:attribute name="ID" type="xs:ID"/> <!-- ...other attributes... --> </xs:complexType> The generated code for this type looks like this: /// <remarks/> [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "2.0.50727.3038")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.XmlTypeAttribute(TypeName="StrucDoc.Paragraph", Namespace="urn:hl7-org:v3")] public partial class StrucDocParagraph { private StrucDocCaption captionField; private object[] itemsField; private string[] textField; private string idField; // ...fields for other attributes... /// <remarks/> public StrucDocCaption caption { get { return this.captionField; } set { this.captionField = value; } } /// <remarks/> [System.Xml.Serialization.XmlElementAttribute("br", typeof(StrucDocBr))] [System.Xml.Serialization.XmlElementAttribute("sub", typeof(StrucDocSub))] [System.Xml.Serialization.XmlElementAttribute("sup", typeof(StrucDocSup))] // ...other possible nodes... public object[] Items { get { return this.itemsField; } set { this.itemsField = value; } } /// <remarks/> [System.Xml.Serialization.XmlTextAttribute()] public string[] Text { get { return this.textField; } set { this.textField = value; } } /// <remarks/> [System.Xml.Serialization.XmlAttributeAttribute(DataType="ID")] public string ID { get { return this.idField; } set { this.idField = value; } } // ...properties for other attributes... } If I deserialize an XML element where the paragraph node looks like this: <paragraph>first line<br /><br />third line</paragraph> The result is that the item and text arrays are read like this: itemsField = new object[] { new StrucDocBr(), new StrucDocBr(), }; textField = new string[] { "first line", "third line", }; From this there is no possible way to determine the exact order of the text and the other nodes. If I serialize this again, the result looks exactly like this: <paragraph> <br /> <br />first linethird line </paragraph> The default serializer just serializes the items first and then the text. I tried implementing IXmlSerializable on the StrucDocParagraph class so that I could control the deserialization and serialization of the content, but it's rather complex since there are so many classes involved and I didn't come to a solution yet because I don't know if the effort pays off. Is there some kind of easy workaround to this problem, or is it even possible by doing custom serialization via IXmlSerializable? Or should I just use XmlDocument or XmlReader/XmlWriter to process these documents?

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  • Correct use of WSDL-generated sources

    - by John K
    How can I easily convert between manually written classes and WSDL-generated equivalents? I have a Java SE 6 thick client that calls a web service to get and store data. The client has a DAO that works with my entity classes, calls <Entity.toDto() to convert them to DTOs, and sends/receives that data with the web service. My issue stems from the fact that the entity classes live on both sides of the service interface: client and server. Each entity has a constructor from the DTO and a toDto function: public class EntityClass { public EntityClass(EntityClassDto dto); public EntityClassDto toDto(); ... } This means I have a handwritten DTO class that the client and server both use. However, the service interface expects the WSDL-generated classes. I have tried writing conversion code between the hand-written DTO and the WSDL-generated DTO and it is tedious and error-prone. What is a reasonable alternative to this? Some back-story: The thick client should be able to have a configurable backend: either direct to the DB or through this web service. The aforementioned DAO is the web service based implementation and another imlpementation that is JPA-based exists.

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  • FFmpeg audio dont work in converted videos

    - by Juddy Swaft
    NOTICE: when i convert videos via terminal and download them from ftp into pc the audio works fine. I use: if($ext == "avi" && $convert_avi == true) { $convert_source = _VIDEOS_DIR_PATH.$new_name; $conv_name = substr(md5($file['name'].rand(1,888)), 2, 10).".mp4"; $converted_file = _VIDEOS_DIR_PATH.$conv_name; $ffmpeg_command = 'ffmpeg -i '.$convert_source.' -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 '.$converted_file; echo exec($ffmpeg_command); $sql = "UPDATE pm_temp SET url = '".$conv_name."' WHERE url = '".$new_name."' LIMIT 1"; $result = @mysql_query($sql); unlink($convert_source); } This code to convert avi to mp4 ffmpeg concole output: root@1tb:~# ffmpeg -i sample.avi -acodec libmp3lame -vcodec libx264 -s 1280x720 -ar 44100 -async 44100 -r 29.970 -ac 2 -qscale 5 goodsample.mp4 ffmpeg version 0.7.15, Copyright (c) 2000-2013 the FFmpeg developers built on Feb 22 2013 07:18:58 with gcc 4.4.5 configuration: --enable-libdc1394 --prefix=/usr --extra-cflags='-Wall -g ' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libfreetype --enable-libschroedinger --disable-encoder=libschroedinger - s libavutil 50. 43. 0 / 50. 43. 0 libavcodec 52.123. 0 / 52.123. 0 libavformat 52.111. 0 / 52.111. 0 libavdevice 52. 5. 0 / 52. 5. 0 libavfilter 1. 80. 0 / 1. 80. 0 libswscale 0. 14. 1 / 0. 14. 1 libpostproc 51. 2. 0 / 51. 2. 0 [mp3 @ 0x191d4100] Header missing [mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected Input #0, avi, from 'sample.avi': Metadata: encoder : VirtualDubMod 1.5.10.2 (build 2540/release) Duration: 00:01:01.81, start: 0.000000, bitrate: 1194 kb/s Stream #0.0: Video: mpeg4, yuv420p, 640x352 [PAR 1:1 DAR 20:11], 23.98 tbr, Stream #0.1: Audio: mp3, 48000 Hz, stereo, s16, 128 kb/s [buffer @ 0x191d1c80] w:640 h:352 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param: [scale @ 0x191d6880] w:640 h:352 fmt:yuv420p -> w:1280 h:720 fmt:yuv420p flags:0 [libx264 @ 0x191ce5a0] Default settings detected, using medium profile [libx264 @ 0x191ce5a0] using SAR=45/44 [libx264 @ 0x191ce5a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle S [libx264 @ 0x191ce5a0] profile High, level 3.1 [libx264 @ 0x191ce5a0] 264 - core 118 - H.264/MPEG-4 AVC codec - Copyleft 2003-2 6 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_off 1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_l Output #0, mp4, to 'goodsample.mp4': Metadata: encoder : Lavf52.111.0 Stream #0.0: Video: libx264, yuv420p, 1280x720 [PAR 45:44 DAR 20:11], q=2-31 Stream #0.1: Audio: libmp3lame, 44100 Hz, stereo, s16, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop, [?] for help [mp3 @ 0x191d4100] Header missing Error while decoding stream #0.1 [mpeg4 @ 0x191d1dc0] Invalid and inefficient vfw-avi packed B frames detected [mp3 @ 0x191d4100] incomplete frame 9467kB time=00:01:00.32 bitrate=1285.5kbits/ Error while decoding stream #0.1 frame= 1852 fps= 20 q=29.0 Lsize= 9652kB time=00:01:01.72 bitrate=1280.9kbits video:9121kB audio:483kB global headers:0kB muxing overhead 0.499688% frame I:11 Avg QP:16.78 size: 51456 [libx264 @ 0x191ce5a0] frame P:784 Avg QP:20.81 size: 8954 [libx264 @ 0x191ce5a0] frame B:1057 Avg QP:26.06 size: 1659 [libx264 @ 0x191ce5a0] consecutive B-frames: 22.0% 3.1% 7.5% 67.4% [libx264 @ 0x191ce5a0] mb I I16..4: 31.1% 59.8% 9.1% [libx264 @ 0x191ce5a0] mb P I16..4: 1.8% 2.6% 0.2% P16..4: 24.3% 7.0% 4.0 [libx264 @ 0x191ce5a0] mb B I16..4: 0.1% 0.1% 0.0% B16..8: 22.7% 0.8% 0.2 [libx264 @ 0x191ce5a0] 8x8 transform intra:57.0% inter:72.6% [libx264 @ 0x191ce5a0] coded y,uvDC,uvAC intra: 44.4% 33.3% 10.3% inter: 7.6% 5. [libx264 @ 0x191ce5a0] i16 v,h,dc,p: 68% 14% 8% 10% [libx264 @ 0x191ce5a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 14% 27% 5% 7% 7% 6 [libx264 @ 0x191ce5a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 14% 14% 6% 10% 9% 7 [libx264 @ 0x191ce5a0] i8c dc,h,v,p: 67% 13% 17% 3% [libx264 @ 0x191ce5a0] Weighted P-Frames: Y:1.9% UV:0.4% [libx264 @ 0x191ce5a0] ref P L0: 62.2% 12.8% 10.3% 14.5% 0.2% [libx264 @ 0x191ce5a0] ref B L0: 88.1% 5.5% 6.4% [libx264 @ 0x191ce5a0] ref B L1: 95.7% 4.3% [libx264 @ 0x191ce5a0] kb/s:1209.03 I know there is couple errors tough, but i dont know hot to fix it. Also i would be very thankfull if someone can help reduce video size but is not main problem video weights as original avi but sill.

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  • What is the correct way to pass an object to WebApi RC controller

    - by Diver Dan
    I have a webapi project running rc I have a very basic controlller like [System.Web.Http.HttpPost] public void Update(Business business) { //if (business.Id == Guid.Empty) //{ // throw new HttpResponseException("Business ID not provided", HttpStatusCode.BadRequest); //} _repository.Update(business); //if (!isUpdated) //{ // throw new HttpResponseException("Business not found", HttpStatusCode.NotFound); //} } I found an example using HttpClient however it doesnt work with rc using (var client = new HttpClient()) { try { string url = string.Format("{0}{1}", ConfigurationManager.AppSettings["ApiBaseUrl"].ToString(),apiMethod); HttpRequestMessage request = new HttpRequestMessage(); MediaTypeFormatter[] formatter = new MediaTypeFormatter[] { new JsonMediaTypeFormatter() }; var content = request.CreateContent<Business>( business, MediaTypeHeaderValue.Parse("application/json"), formatter, new FormatterSelector()); HttpResponseMessage response = client.PostAsync(url, content).Result; return response.Content.ToString(); } catch (Exception ex) { return null; } } I get an error Method not found: 'Void System.Net.Http.Headers.HttpHeaders.AddWithoutValidation(System.String, System.String)'. Passing the data from jquery is a piece of cake however I need call the api from code behind vs client side. Can someone point me in the right direction for calling the webapi? Thank you

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