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  • Upload image file: is compression on client side already possible?

    - by Chris
    When offering photo file uploading, usually the user will have badly compressed and huge (10+ megapixels) JPEG files from their cameras or phones. On the server side, these files will get re-compressed to something like 800x600px and JPEG quality 7 or 8. Is it (already) possible to do that re-compression on the client side? So that I would only need to transmit some 100kB (800x600px) and not 3 MB or more. Something like: (1) With javascript's new FileSystem API ( http://slides.html5rocks.com/#filewriter ) it would be possible to read the photo file's data into client side JS. (2) Then it would be necessary to re-encode the JPEG data, which is possible, but I counld not find any library for that (yet). Anybody knows such a library? (3) Last step would be to POST the re-compressed JPEG data to the server side for storage and get a URL to the stored photo file back from the server for inclusion into the client's HTML. I am looking for some jQuery plugin, other JS library or example web page that does this.

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  • How are developers using source control, I am trying to find the most efficient way to do source con

    - by RJ
    I work in a group of 4 .Net developers. We rarely work on the same project at the same time but it does happen from time to time.We use TFS for source control. My most recent example is a project I just placed into production last night that included 2 WCF services and a web application front end. I worked out of a branch called "prod" because the application is brand new and has never seen the light of day. Now that the project is live, I need to branch off the prod branch for features, bugs, etc... So what is the best way to do this? Do I simple create a new branch and sort of archive the old branch and never use it again? Do I branch off and then merge my branch changes back into the prod branch when I want to deploy to production? And what about the file and assembly version. They are currently at 1.0.0.0. When do they change and why? If I fix a small bug, which number changes if any? If I add a feature, which number changes if any? What I am looking for is what you have found to be the best way to efficiently manage source control. Most places I have worked always seem to bang heads with the source control system in on way or another and I would just like to find out what you have found that works the best.

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  • Take a snapshot with JavaFX!

    - by user12610255
    JavaFX 2.2 has a "snapshot" feature that enables you to take a picture of any node or scene. Take a look at the API Documentation and you will find new snapshot methods in the javafx.scene.Scene class. The most basic version has the following signature: public WritableImage snapshot(WritableImage image) The WritableImage class (also introduced in JavaFX 2.2) lives in the javafx.scene.image package, and represents a custom graphical image that is constructed from pixels supplied by the application. In fact, there are 5 new classes in javafx.scene.image: PixelFormat: Defines the layout of data for a pixel of a given format. WritablePixelFormat: Represents a pixel format that can store full colors and so can be used as a destination format to write pixel data from an arbitrary image. PixelReader: Defines methods for retrieving the pixel data from an Image or other surface containing pixels. PixelWriter: Defines methods for writing the pixel data of a WritableImage or other surface containing writable pixels. WritableImage: Represents a custom graphical image that is constructed from pixels supplied by the application, and possibly from PixelReader objects from any number of sources, including images read from a file or URL. The API documentation contains lots of information, so go investigate and have fun with these useful new classes! -- Scott Hommel

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  • How to stop moving the image in objective c?

    - by user1589452
    I have done a coding to check whether the image crossed particular area or not, -(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event { CGPoint loc=[touch locationInView:self.view]; if (touch.view==img2Obj) { NSLog(@"image2"); img2Obj.center=loc; currentx1=img2Obj.frame.origin.x; currenty1=img2Obj.frame.origin.y; //NSLog(@"top left corner x and y is %.1f and %.1f",img2Obj.frame.origin.x,img2Obj.frame.origin.y); [self isImg1InPos]; }} -(void)isImg1InPos { int dx,dy; dx=currentx1-x1; dy=currenty1-y1; if (abs(dx)<5 && abs(dx)<5) { NSLog(@"Image must stop moving after this!!!"); [img2Obj setUserInteractionEnabled:FALSE]; } //NSLog(@"unsigned int is %d",abs(dx)); } I want the image to stop moving when when it passes the condition. [img2Obj setUserInteractionEnabled:FALSE]; But its not working, can anyone tell me how to solve this problem Many thanks in advance

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  • How to control messages to the same port from different emitters?

    - by Alex In Paris
    Scene: A company has many factories X, each emits a message to the same receive port in a Biztalk server Y; if all messages are processed without much delay, each will trigger an outgoing message to another system Z. Problem: Sometimes a factory loses its connection for a half-day or more and, when the connection is reestablished, thousands of messages get emitted. Now, the messages still get processed well by Y (Biztalk can easily handle the load) but system Z can't handle the flood and may lock up and severely delay the processing of all other messages from the other X. What is the solution? Creating multiple receive locations that permits us to pause one X or another would lose us information if the factory isn't smart enough to know whether the message was received or not. What is the basic pattern to apply in Biztalk for this problem? Would some throttling parameters help to limit the flow from any one X? Or are their techniques on the end part of Y which I should use instead ? I would prefer this last one since I can be confident that the message box will remember any failures, which could then be resumed.

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  • Why wouldn't an embedded silverlight control work in a page?

    - by rsteckly
    Hi, I have a silverlight application project in my solution. The other project is a web application project that has a .xap file in ClientBin. When I created the silverlight project, it asked if I wanted the asp.net application to host it (and I said yes). In the root directory, there is a test page for the silverlight control. That loads the control. In another directory, I insert the SAME asp markup to get the silverlight control to launch again. Nothing happens. Why would the silverlight launch on one page and not on the other? Can people help point me to documentation about dependencies that I might not know about? I've put a reference to Silverlight.js on the page as well. Here's the markup: <div id="silverlightControlHost"> <object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%"> <param name="source" value="../ClientBin/Editor.xap"/> <param name="onError" value="onSilverlightError" /> <param name="background" value="white" /> <param name="minRuntimeVersion" value="3.0.40818.0" /> <param name="autoUpgrade" value="true" /> <a href="http://go.microsoft.com/fwlink/?LinkID=149156&v=3.0.40818.0" style="text-decoration:none"> <img src="http://go.microsoft.com/fwlink/?LinkId=108181" alt="Get Microsoft Silverlight" style="border-style:none"/> </a> </object><iframe id="_sl_historyFrame" style="visibility:hidden;height:0px;width:0px;border:0px"></iframe></div> </div>

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  • Can turning off drm_kms_helper polling affect screen brightness control?

    - by dodecaphonic
    I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question. The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot. Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

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  • Directory access control with Apache: do I need to use a specific .htaccess?

    - by Mirror51
    I have an Apache webserver, and in the Apache configuration, I have Alias /backups "/backups" <Directory "/backups"> AllowOverride None Options Indexes Order allow,deny Allow from all </Directory> I can access files via http://127.0.0.1/backups. The problem is everyone can access that. I have a web interface, e.g. http://localhost/adminm that is protected with htaccess and password. Now I don't want separate .htaccess and .htpasswd for /backups, and I don't want a second password prompt when a user clicks on /backups in the web interface. Is there any way to use same .htaccess and .htpasswd for the backups directory?

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  • How do I control an animation with a drag command?

    - by Zishan
    I want to play an animation when someone drags a sprite from it's default position to another selected position. If they drag half of the selected position then animation will be play half. For example, I have 15 frames of a animation for a projectile arm. The projectile arm can be rotated a maximum of 30°, if someone rotates the arm 2° then the animation sprite should show the 2nd frame, if rotated 12° then the animation sprite should show the 6th frame.... and so on. Also when they release the arm, the arm will be reverse back to it's default position and animation frames also will be reverse back to the default first frame. I am new on cocos2D. I know how to make an animation and how to drag a sprite but I have no idea how to combine them. Can anyone give me an idea or any tutorial on how to do this?

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  • how can i replace an image (inside a div) through jquery and ajax.

    - by oo
    I am trying to click on an image and change it to another image through jquery. When i step through the below code, on the serverside, the controller action fires and on the client side, i can see the correct html return in firebug watch window but the image doesn't change at all. any idea why this div is not updating? original div: <div class="inlineDiv" toggle="off" id="22"><img src="../../images/vote-favorite-off1.png" border="0"></div> jquery code: $(document).ready(function() { $('div.inlineDiv').live('click', function() { var id = $(this).attr("id"); var toggle = $(this).attr("toggle"); var url = '/Tracker/Update?id=' + id + '&toggle=' + toggle; $.get(url, function(data) { $(this).html(data); }); }); }); controller action: public ActionResult Update(int id, string toggle) { if (toggle == "off") { return Content("<img src='../../images/vote-favorite-on1.png' border=0'>"); } return Content("<img src='../../images/vote-favorite-off1.png' border=0'>"); }

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  • Rails has_one vs belongs_to semantics

    - by Anurag
    I have a model representing a Content item that contains some images. The number of images are fixed as these image references are very specific to the content. For example, the Content model refers to the Image model twice (profile image, and background image). I am trying to avoid a generic has_many, and sticking to multiple has_one's. The current database structure looks like: contents - id:integer - integer:profile_image_id - integer:background_image_id images - integer:id - string:filename - integer:content_id I just can't figure out how to setup the associations correctly here. The Content model could contain two belongs_to references to an Image, but that doesn't seem semantically right cause ideally an image belongs to the content, or in other words, the content has two images. This is the best I could think of (by breaking the semantics): class Content belongs_to :profile_image, :class_name => 'Image', :foreign_key => 'profile_image_id' belongs_to :background_image, :class_name => 'Image', :foreign_key => 'background_image_id' end Am I way off, and there a better way to achieve this association?

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  • Nouveau forum sur gestionnaires de sources décentralisée (Distributed Version Control System). Posez

    Bonjour, Les DVCS sont en plein essor ces dernières années, et un forum leur est désormais dédié. Avant de poser votre question, n'oubliez pas de consulter les ressources documentaires :La documentation de Git La documentation de Mercurial La FAQ SCM Si vous souhaitez contribuer à la base documentaire francophone sur ce thème, n'hésitez pas à contacter les responsables bénévoles par mail sur conception [AT] redaction [DASH] developpez [DOT] com...

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  • How to get the height of an image and apply that height to a div? [migrated]

    - by Mick79
    I am building a mobile web app and I'm using jquerytools slider on it. i want te slider to show (in proper ratio) across all mobile devices so width of the images is 100% and height is auto in css. However as all the elements are floated and jquerytools slider requires the position be set to absolute, the containing div (#header) doesn't stretch to fit the content. I am trying to use jquery to get the height of the height of the img and apply that height to the header.... however I am having no luck. CSS: #header{ width:100%; position:relative; z-index: 20; /* box-shadow: 0 0 10px white; */ overflow: auto; } .scrollable { position:relative; overflow:hidden; width: 100%; height: 100%; /* box-shadow: 0 0 20px purple; */ /* height:198px; */ z-index: 20; overflow: auto; } .scrollable .items { /* this cannot be too large */ width:1000%; position:absolute; clear:both; /* box-shadow: 0 0 30px green; */ } .items div { float:left; width:10%; height:100%; } /* single scrollable item */ .scrollable img { /* float:left; */ width:100%; height: auto; /* height:198px; */ } /* active item */ .scrollable .active { border:2px solid #000; position:relative; cursor:default; } HTML <div id=header><!-- root element for scrollable --> <div class="scrollable" id="scrollable"> <!-- root element for the items --> <div class="items"> <div> <img src="img/img2.jpg" /> </div> <div> <img src="img/img1.jpg" /> </div> <div> <img src="img/img3.jpg" /> </div> <div> <img src="img/img4.jpg" /> </div> <div> <img src="img/img6.jpg" /> </div> </div><!-- items --> </div><!-- scrollable --> </div><!-- header -->

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  • Applying transformations to NSBitmapImageRep

    - by Adam
    So ... I have an image loaded into an NSBitmapImageRep object, so I am able to examine the contents of specific pixels via a two dimensional array. Now I want to apply a couple of "transformations" to the image, in preparation for some additional processing. If I was manipulating the image manually, in Photoshop, I would: Rotate the image Crop a portion of it and discard the rest Apply a "threshold" transformation (which essentially converts the image to black and white, based on the threshold value I provide) Resample the image to shrink it down a bit (which, although losing some image quality, will speed up the subsequent processing) (not necessarily in that order) Are there objective C methods available to facilitate these specific image manipulations, with the data in the NSBitmapImageRep object? If so, can someone point me to some good examples?

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  • How do I repeatedly move an image by 1 pixel?

    - by Will
    I have a method that is moving a UIImageView called shootImg across the screen: -(IBAction)shoot{ if (appDelegate.shootInt > 0) { if (direction == 1) { shootImg.center = CGPointMake(shootImg.center.x+1, shootImg.center.y); appDelegate.shootInt = appDelegate.shootInt - 1; shootLabel.text = [NSString stringWithFormat:@"%d", appDelegate.shootInt]; } This does seem to work. But it only moves shootImage 1 pixel. What I want to do is make it repeatedly move 1 pixel. I tried a while loop but that didn't seem to work. I'm not using cocos2d or anything like that and if you need to see more code just ask. Thanks :)

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  • In what ways can I test an image slideshow javascript code?

    - by Rahul
    I have a slideshow of images (and links) on a page. These images are part of a JSON response to a request sent after the page loads. The slideshow is set to play at an interval of 2 seconds. The slideshow can be paused, played over, and all other controls a normal slideshow would have. As a Rails dev, I proposed cucumber but the javascript guys in the team are not comfortable with ruby. I saw some cucumber for javascript libraries coming up, still in experimental stage. I checked out jasmine and related tutorials but all I could get from them is how I can carry out any internal functional testing such as credit-cart validation, etc. - which I think could actually be handled in unit testing? (Screw the research I did and) How should I go about testing this and similar components?

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  • How to make Google show my site in search result like the following image? [closed]

    - by Samik Chattopadhyay
    Possible Duplicate: What are the most important things I need to do to encourage Google Sitelinks? Currently Google is displaying my site (http://layzend.info) like this in search result, only the link and meta description without any internal page links - But I want to be the search result like the following where the internal links are also displayed - How is it possible? Please help me to make my site more SEO friendly.

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  • My Windows 7 is getting the "An error occurred. Press control+alt+del" message on boot

    - by Maxrunner
    So I upgraded my ubuntu to 12.10 but the Windows 7 problem seems to have happened not after doing the upgrade but later. I am not sure. Ubuntu is running fine, but how can I recover my Windows7? I tried running BootRepair in Ubuntu but it keeps scanning system endlessly... If I recover Windows with the Windows DVD I assume I will lose the GRUB menu and then not possible to start Ubuntu. How do i then proceed to recover the GRUB? Can I recover using the Ubuntu DVD?

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  • How to make buttons in python/pygame?

    - by user1334014
    I'm making a game in pygame and on the first screen I want there to be buttons that you can press to (i) start the game, (ii) load a new screen with instructions, and (iii) exit the program. I've found this code online for button making, but I don't really understand it (I'm not that good at object oriented programming). If I could get some explanation as to what it's doing that would be great. Also, when I use it and try to open a file on my computer using the file path, I get the error sh: filepath :Permission denied, which I don't know how to solve. #load_image is used in most pygame programs for loading images def load_image(name, colorkey=None): fullname = os.path.join('data', name) try: image = pygame.image.load(fullname) except pygame.error, message: print 'Cannot load image:', fullname raise SystemExit, message image = image.convert() if colorkey is not None: if colorkey is -1: colorkey = image.get_at((0,0)) image.set_colorkey(colorkey, RLEACCEL) return image, image.get_rect() class Button(pygame.sprite.Sprite): """Class used to create a button, use setCords to set position of topleft corner. Method pressed() returns a boolean and should be called inside the input loop.""" def __init__(self): pygame.sprite.Sprite.__init__(self) self.image, self.rect = load_image('button.png', -1) def setCords(self,x,y): self.rect.topleft = x,y def pressed(self,mouse): if mouse[0] > self.rect.topleft[0]: if mouse[1] > self.rect.topleft[1]: if mouse[0] < self.rect.bottomright[0]: if mouse[1] < self.rect.bottomright[1]: return True else: return False else: return False else: return False else: return False def main(): button = Button() #Button class is created button.setCords(200,200) #Button is displayed at 200,200 while 1: for event in pygame.event.get(): if event.type == MOUSEBUTTONDOWN: mouse = pygame.mouse.get_pos() if button.pressed(mouse): #Button's pressed method is called print ('button hit') if __name__ == '__main__': main() Thank you to anyone who can help me.

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  • How to make an Image still when at position at Slick 2D?

    - by SystemNetworks
    For example, I want to put a building down. if I press 2, it will show the building near the character and it is moving with my character. I have done that. Now I wanted to know how do i put it down and stop following my character? I have something called shiftX and shiftY (Which is the position of my character) And my character looks like it is moving because the map and images itself is moving which i call, probePositionX and probePositionY.

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  • Bitmap manipulation as a referenced object

    - by John Maloney
    I am working with a Bitmap object that I add annotations or copyright material to the image and then return the modified bitmap. My problem is that the Bitmap won't hold the changes made to it as it moves along the chain. I am treating it as a reference type and would assume that as it gets passed to each class it would carry the changes made to it. I have verified that the code inside of the MarkImage() classes does function, but which ever one gets called last is the one that has changes. Public Shared Function GetImage(ByVal imageDef As IImageDefinition) As Bitmap Dim image As Bitmap = Drawing.Image.FromFile(imageDef.Path) If Not imageDef.Authorization.IsAllowed(AuthKeys.CanViewWithoutCopyright) Then image = New MarkCopyrightImage(image).MarkImage() End If If Not imageDef.Authorization.IsAllowed(AuthKeys.CanViewWithoutAnnotations) Then image = New MarkAnnotateImage(image).MarkImage() End If Return image End Function How do I write changes to a bitmap object and then pass that object to another class while maintaining the changes? Answers in C# or VB are fine? Thanks

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  • upload new file first check if this file exist already in database or not then if not exist save that in database

    - by Hala Qaseam
    I'm trying to create sql database that contains Image Id (int) Imagename (varchar(50)) Image (image) and in aspx write in upload button this code: protected void btnUpload_Click(object sender, EventArgs e) { //Condition to check if the file uploaded or not if (fileuploadImage.HasFile) { //getting length of uploaded file int length = fileuploadImage.PostedFile.ContentLength; //create a byte array to store the binary image data byte[] imgbyte = new byte[length]; //store the currently selected file in memeory HttpPostedFile img = fileuploadImage.PostedFile; //set the binary data img.InputStream.Read(imgbyte, 0, length); string imagename = txtImageName.Text; //use the web.config to store the connection string SqlConnection connection = new SqlConnection(strcon); connection.Open(); SqlCommand cmd = new SqlCommand("INSERT INTO Image (ImageName,Image) VALUES (@imagename,@imagedata)", connection); cmd.Parameters.Add("@imagename", SqlDbType.VarChar, 50).Value = imagename; cmd.Parameters.Add("@imagedata", SqlDbType.Image).Value = imgbyte; int count = cmd.ExecuteNonQuery(); connection.Close(); if (count == 1) { BindGridData(); txtImageName.Text = string.Empty; ScriptManager.RegisterStartupScript(this, this.GetType(), "alertmessage", "javascript:alert('" + imagename + " image inserted successfully')", true); } } } When I'm uploading a new image I need to first check if this image already exists in database and if it doesn't exist save that in database. Please how I can do that?

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  • Why changing the images name on server results in calling the old ones?

    - by moderns
    I am running a slideshow on Ubuntu 12.04.1 that loads the images (slide1.jpg, slide2.jpg, slide3.jpg.., slide5.jpg) using the Javascript and styles as below: document.getElementById('slide_area').className='slide'+step; .slide1{background-image: url(../upload/slide1.jpg)} .slide2{background-image: url(../upload/slide2.jpg)} .slide3{background-image: url(../upload/slide3.jpg)} .slide4{background-image: url(../upload/slide4.jpg)} .slide5{background-image: url(../upload/slide5.jpg)} When I change the images names (show1.jpg, show2.jpg, show3.jpg.., show5.jpg) and also change the style as below: .slide1{background-image: url(../upload/show1.jpg)} .slide2{background-image: url(../upload/show2.jpg)} .slide3{background-image: url(../upload/show3.jpg)} .slide4{background-image: url(../upload/show4.jpg)} .slide5{background-image: url(../upload/show5.jpg)} And open the network section on Chrome, I see the server is calling the new name and old name for images! I added the header in the index.php: header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); Nothing worked out with me and the slideshow doesn't work properly when I change the name of images even when clearing the browser cache as I load images sequentially (one by one) depending on imageObject.complete property! But without changing the name everything is going perfect and the images are loaded smoothly! Thank you for your help!

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  • In R, How to add Row for Information:

    - by Moe
    Hi, I'm trying to add a Row to my data.frame to spit out the average of the column. This is my data frame: Weight Response 1 Control 59 0.0 2 Treatment 90 0.8 3 Treatment 47 0.1 4 Treamment 106 0.1 5 Control 85 0.7 6 Treatment 73 0.6 7 Control 61 0.2 I'd like it to become: Weight Response 1 Control 59 0.0 2 Treatment 90 0.8 3 Treatment 47 0.1 4 Treamment 106 0.1 5 Control 85 0.7 6 Treatment 73 0.6 7 Control 61 0.2 8 AVERAGES 74 0.3 Thanks!

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