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• Regular expression, how to find all tags A which do not contain tag IMG inside it?

  - by Kirzilla

  Hello, Let's suppose that we have such HTML code. We need to get all <a href=""></a> tags which DO NOT contain img tag inside it. <a href="http://domain1.com"><span>Here is link</span></a> <a href="http://domain2.com" title="">Hello</a> <a href="http://domain3.com" title=""><img src="" /></a> <a href="http://domain4" title=""> I'm the image <img src="" /> yeah</a> I'm using this regular expression to find out all links preg_match_all("!<a[^>]+href=\"?'?([^ \"'>]+)\"?'?[^>]*>(.*?)</a>!is", $content, $out); I can modify it preg_match_all("!<a[^>]+href=\"?'?([^ \"'>]+)\"?'?[^>]*>([^<>]+?)</a>!is", $content, $out); But how can I tell to exclude results containing <img substring inside of <a href=""></a>? Thank you

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• Highlighting a custom UIButton

  - by Dan Ray

  The app I'm building has LOTS of custom UIButtons laying over top of fairly precisely laid out images. Buttonish, controllish images and labels and what have you, but with a clear custom-style UIButton sitting over top of it to handle the tap. My client yesterday says, "I want that to highlight when you tap it". Never mind that it immediately pushes on a new uinavigationcontroller view... it didn't blink, and so he's confused. Oy. Here's what I've done to address it. I don't like it, but it's what I've done: I subclassed UIButton (naming it FlashingUIButton). For some reason I couldn't just configure it with a background image on control mode highlighted. It never seemed to hit the state "highlighted". Don't know why that is. So instead I wrote: -(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { [self setBackgroundImage:[UIImage imageNamed:@"grey_screen"] forState:UIControlStateNormal]; [self performSelector:@selector(resetImage) withObject:nil afterDelay:0.2]; [super touchesBegan:touches withEvent:event]; } -(void)resetImage { [self setBackgroundImage:nil forState:UIControlStateNormal]; } This happily lays my grey_screen.png (a 30% opaque black box) over the button when it's tapped and replaces it with happy emptyness .2 of a second later. This is fine, but it means I have to go through all my many nibs and change all my buttons from UIButtons to FlashingUIButtons. Which isn't the end of the world, but I'd really hoped to address this as a UIButton category, and hit all birds with one stone. Any suggestions for a better approach than this one?

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• Passing XML data and user from coldfusion page to .NET page

  - by Mark Rullo

  I'd appreciate some input on this situation, I can't figure out the best way to do this. I have some data that's being prepared for me in a ColdFusion app and in an IFrame within the CF app we want to display some graphs (not strictly an image, it's an entire page) being generated on the .NET side of things. I'd like to pass XML data from the CF side to .NET as well as the user. On the .NET side I'm putting the data in a session so the user can sift through it without the need to have it re-queried and re-passed from CF. What I've tried: Generating XML with CF, putting it in a hidden form field, auto-submitting (with JS) a the form to the .NET side. The issue I'm having with this approach is the encoding being done on the form post. The data has entries like <entry data="hello &amp; goodbye">. It's an issue because it's being URL encdeded, Posted, and when I get it on the .NET side I get <entry data="hello & goodbye"> which isn't properly formed XML. What I'd like to avoid: An intermediary DB approach (dropping the data in a DB on CF, picking it up with .NET) I'd like to only display what is passed to the page. I have security concerns with the data, it's very sensitive. Passing the data to a webservice, returning a GUID, forwarding the user with a URL Parameter to access the passed in data. I think that'd be risky if someone happened on a link to that data. I can't take that risk. I was thinking of passing the data with JSON, but I'm very unfamiliar with it. Thoughts? Thanks for your time folks.

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• GIT: head has dissapeared, want to merge it into master.

  - by samgoody

  The top image is the output of: git reflog. The bottom is what GITK in GIT GUI (msysgit) shows me when I look at all branch history. The last few commits do not show on GIT GUI. Why do they not show on GITK (at least as a branch or something)? How do I merge them into master? I gather this happened when I checked out tag 0.42. Why is that not the same as master? (I had tagged the master in its latest state) When I click push, why does the remote repo claim to be up to date.. shouldn't it try to update these commits into whatever branch they are in? The first of the questions is important - I would like to begin to understand what GIT is thinking. It's more oracle than logic at this point. If it makes a difference to see the earlier history, the project is a [pretty powerful] JS color picker that can be viewed here in its entirety.

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• Should I really use a UITableView in this situation?

  - by mystify

  Imagine you have a view like this: At the top, there is an UISegmentedControl with two segments. It functions like a tab. Pressing one segment will activate this particular content below that UISegmentedControl. Below the UISegmentedControl are some switches. These modify the way how the content should be rendered. And finally, below those switches, there's a table. Imagine a table not in sense of UITableView, but just what it really is: A table. It shows little messages like twitter messages or chat messages for example, one below the other. Like you know it from skype and other chats. Basically they're just rows with some formatting. A label, some image views, some lines, a background. Pretty basic. The data comes from an array. No core data. The whole thing including the segmented control and setup switches must be scrollable. So what I did is: I put all this stuff in an UIScrollView. Now I have to make the decision if I would use a UITableView inside there for that table part, or if I would just print a lot of rows on to the scroll view (with -drawRect:). But some problems stick in my head: Can I put a UITableView inside a UIScrollView? I assume this makes a lot of problems. I don't want that the table part is separately scrollable. Again imagine that view: First there are some basic choice things (segmented control, switches). Then there comes the table. When you scroll, the whole thing scrolls. That's mainly because this first part with the settings can be pretty big, so you would want to scroll it away. The next thing is: Can I customize UITableView in such a way, that it consists of two parts? One for that settings part, and one for the actual data to display?

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• Mechanize form submit not going to the correct response page, no errors as to why. Something I'm doing?

  - by Zack Shapiro

  I threw this all in one controller for testing purposes. My code fills out the form correctly for adding a new address to your Amazon account. There are two buttons that submit this form, one takes you to add a new address which is what I don't want, and the other is just a Save & Continue input/image. When I submit the form via that button, as I do below, the form is still on the page, filled out as I have with my code. Inspecting the page titles, they're the same. There are no discernible errors that Mechanize or Amazon spit back. Any ideas? class AmazonCrawler def initialize @agent = Mechanize.new do |agent| agent.user_agent_alias = 'Mac Safari' agent.follow_meta_refresh = true agent.redirect_ok = true end end def login # login_url = "https://www.amazon.com/ap/signin?_encoding=UTF8&openid.assoc_handle=usflex&openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.mode=checkid_setup&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.ns.pape=http%3A%2F%2Fspecs.openid.net%2Fextensions%2Fpape%2F1.0&openid.pape.max_auth_age=0&openid.return_to=https%3A%2F%2Fwww.amazon.com%2Fgp%2Fcss%2Fhomepage.html%3Fie%3DUTF8%26ref_%3Dgno_yam_ya" login_url = "https://www.amazon.com/gp/css/account/address/view.html?ie=UTF8&ref_=ya_add_address&viewID=newAddress" @agent.get(login_url) form = @agent.page.forms.first form.email = "[email protected]" form.radiobuttons.first.value = "0" form.radiobuttons.last.check form.password = "my_password" dashboard = @agent.submit(form) end end class UsersController < ApplicationController def index response = AmazonCrawler.new.login form = response.forms[1] # fill out form form.enterAddressFullName == "Your Name" form.enterAddressAddressLine1 = "123 Main Street" form.enterAddressAddressLine2 = "Apartment 34" form.enterAddressCity = "San Francisco" form.enterAddressStateOrRegion = "CA" form.enterAddressPostalCode = "94101" form.enterAddressPhoneNumber = "415-555-1212" form.AddressType = "RES" new_response = form.submit( form.button_with(value: /Save.*Continue/) ) end end

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• PHP: Problem with reading Files

  - by mathiregister

  hello guys, i wonder what i'm doing wrong! i want to read a folder and run through the existing files, checking if they are either images or textfiles. if there are textfiles they should be put into a div, if there are images the should be output as an image. <?php $path = 'thumbs'; if ($handle = opendir($path)) { while (false !== ($file = readdir($handle))) { $ext = pathinfo($file, PATHINFO_EXTENSION); if ($ext == "jpg" || $ext == "jpeg" || $ext == "gif" || $ext == "png") { print "<img class='thumb' src='$path/$file'/>"; } else if ($ext == "txt" || $ext == "rtf") { //read text $lines = file_get_contents($file); $lines = str_replace("\n","<br/>",$lines); print "<div class='text'>" . $lines . "</div>"; //read text } } closedir($handle); } ?> there seems to be a problem i can't find, because ALL IMAGES get put out, however only ONE of a few textfiles gets printed. Any ideas why it only prints out one textfile??? thank you for your help!

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• WinForms Dynamic Label

  - by tolga

  I am creating dynamic labels and letting users change attributes of the labes like backcolor and so by sending unicode. However I don't know how to check if the label exists therefore I can't manipulate the dynamicly created label. below is my code: if ((InputBox.Text.StartsWith("p")) && (InputBox.Text.EndsWith("}")))// only process if the message starts with p and ends with } { string Message = InputBox.Text; InputBox.Text = "";// Clear the box when done. // Butt1 message line if (Message.StartsWith("plabelt1")) { if (Message.StartsWith("plabelt1_BackColor")) { Message = Message.Substring(19); //labelt1.BackColor = System.Drawing.Color.FromName(Message.Replace("}", "")); } } private void ImageBox_DragDrop(object sender, DragEventArgs e) { //Graphics g = ImageBox.CreateGraphics(); //g.DrawImage((Image)e.Data.GetData(DataFormats.Bitmap), //new Point(e.X - this.Left, e.Y - this.Top - 150)); Point p2 = PointToClient(Cursor.Position); Label buttlbl_ = new Label(); labelCount++; buttlbl_.Name = "labelt" + labelCount.ToString(); buttlbl_.Location = new Point(p2.X, p2.Y); buttlbl_.Size = new System.Drawing.Size(37, 37); buttlbl_.BackColor = System.Drawing.Color.DarkGray; this.Controls.Add(buttlbl_); buttlbl_.BringToFront(); ImageBox.Invalidate(); } } Any suggestions?

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• Color banding only on Android 4.0+

  - by threeshinyapples

  On emulators running Android 4.0 or 4.0.3, I am seeing horrible colour banding which I can't seem to get rid of. On every other Android version I have tested, gradients look smooth. I have a SurfaceView which is configured as RGBX_8888, and the banding is not present in the rendered canvas. If I manually dither the image by overlaying a noise pattern at the end of rendering I can make the gradients smooth again, though obviously at a cost to performance which I'd rather avoid. So the banding is being introduced later. I can only assume that, on 4.0+, my SurfaceView is being quantized to a lower bit-depth at some point between it being drawn and being displayed, and I can see from a screen capture that gradients are stepping 8 values at a time in each channel, suggesting a quantization to 555 (not 565). I added the following to my Activity onCreate function, but it made no difference. getWindow().setFormat(PixelFormat.RGBA_8888); getWindow().addFlags(WindowManager.LayoutParams.FLAG_DITHER); I also tried putting the above in onAttachedToWindow() instead, but there was still no change. (I believe that RGBA_8888 is the default window format anyway for 2.2 and above, so it's little surprise that explicitly setting that format has no effect on 4.0+.) Which leaves the question, if the source is 8888 and the destination is 8888, what is introducing the quantization/banding and why does it only appear on 4.0+? Very puzzling. I wonder if anyone can shed some light?

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• How to navigate to a UITableView position by the cell it's title using indexing

  - by BarryK88

  I'm using a UITableView filled with a around 200 cells containing a title, subtitle and thumbnail image. I want to a have a selection method just like within the contact App from Apple where you can select a character from the alphabet. I'm at the point where I've drawn the selection interface (A,B,C etc), and via it's delegate I'm retrieving the respective index and title (i.e: A = 1, B = 2, C = 3 etc.). Now I want to navigate to the first cell, where the first character of the cell it's title is starting with the selected index character. Just like the contacts App. Can someone give me a direction for how to implement such functionality. - (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index I filled my sectionIndex by means of - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView { if(searching) return nil; NSMutableArray *tempArray = [[NSMutableArray alloc] init]; [tempArray addObject:@"A"]; [tempArray addObject:@"B"]; [tempArray addObject:@"C"]; [tempArray addObject:@"D"]; [tempArray addObject:@"E"]; [tempArray addObject:@"F"]; [tempArray addObject:@"G"]; [tempArray addObject:@"H"]; [tempArray addObject:@"I"]; [tempArray addObject:@"J"]; [tempArray addObject:@"K"]; [tempArray addObject:@"L"]; [tempArray addObject:@"M"]; [tempArray addObject:@"N"]; [tempArray addObject:@"O"]; [tempArray addObject:@"P"]; [tempArray addObject:@"Q"]; [tempArray addObject:@"R"]; [tempArray addObject:@"S"]; [tempArray addObject:@"T"]; [tempArray addObject:@"U"]; [tempArray addObject:@"V"]; [tempArray addObject:@"W"]; [tempArray addObject:@"X"]; [tempArray addObject:@"Y"]; [tempArray addObject:@"Z"]; return tempArray; }

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• Bind two images together to be dragged

  - by Ryan Beaulieu

  I'm looking for some help with a script to drag two images together at once. I currently have a script that allows me to drag thumbnail images into a collection bin to be saved later. However, some of my thumbnails have an image positioned over the top of them to represent these thumbnail images as "unknown" plants. I was wondering if someone could point me in the right direction as to how I would go about binding these two images together to be dragged. Here is my code: $(document).ready(function() { var limit = 16; var counter = 0; $("#mainBin1, #mainBin2, #mainBin3, #mainBin4, #mainBin5, #bin_One_Hd, #bin_Two_Hd, #bin_Three_Hd, #bin_Four_Hd, #bin_Five_Hd").droppable({ accept: ".selector, .plant_Unknown", drop: function(event, ui) { counter++; if (counter == limit) { $(this).droppable("disable"); } $(this).append($(ui.draggable).clone()); $("#cbOptions").show(); $(".item").draggable({ containment: "parent", grid: [72,72], }); } }); $(".selector").draggable({ helper: "clone", revert: "invalid", revertDuration: 700, opacity: 0.75, }); $(".plant_Unknown").draggable({ helper: "clone", revert: "invalid", revertDuration: 700, opacity: 0.75, }); }); Any help would be greatly appreciated. Thanks. EDIT: Website

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• Find and Replace using Perl for a dynamic url based on wordpress post

  - by user1068544

  How do you find the following div using perl. The url and image location will consistently change based on the post url, so i need to use a wild card. I must use a regular expression because I am limited in what i can use due to the software i am using. http://community.autoblogged.com/entries/344640-common-search-and-replace-patterns <div class="tweetmeme_button" style="float: right; margin-left: 10px;"> <a href="http://api.tweetmeme.com/share?url=http%3A%2F%2Fjumpinblack.com%2F2011%2F11%2F25%2Fdrake-and-rick-ross-you-only-live-once-ep-mixtape-2011-download%2F"><br /> <img src="http://api.tweetmeme.com/imagebutton.gif?url=http%3A%2F%2Fjumpinblack.com%2F2011%2F11%2F25%2Fdrake-and-rick-ross-you-only-live-once-ep-mixtape-2011-download%2F&amp;source=jumpinblack1&amp;style=compact&amp;b=2" height="61" width="50" /><br /> </a> </div> I tried using <div class="tweetmeme_button" style="float: right; margin-left: 10px;">.*<\/div>

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• Best way to import a pack or "system" of new classes??

  - by Joe Blow

  Here's an Advanced question for Advanced developers. So I've written a largish "subsystem". It is essentially a UIViewController called CleverViewController which is a UIViewController. Now, there are a large number of supporting classes (about ten) that do the hard work: perform math functions, image processing, purely logical functions, build images or what have you with thousands of lines of code. (To do this, I simply started a new XCode project / app "Scratchpad" which does little other than load and launch the CleverViewController. So currently it works as an app, which launches CleverViewController. The ten or so classes I mention that are part of the "subsystem" simply sit there in that project/app.) So now, we will use CleverViewController, the new technology generally, in various apps. (Or perhaps friends would want to use it, etc.) What's the best way to "do" this? Have I screwed everything up, and really it should just be ONE (pretty big) class rather than a dozen classes? (I could understand that then as I would simply add that new (big) class where needed, like adding any other class.) Do I have to make a "framework" like the Apple frameworks? (If so, what the hell are they, how do you do it, etc?!?) In fact, do you just have to lamely include all of the dozen classes and that's that (obviously perhaps putting them in a grouped subfolder). What about all the headers and so on? (Currently I just have the dozen includes in the pch file of the scratchpad project.) Shouldn't it be easy to "maintain" this "subsystem" separately and so on? I'm afraid I know nothing about this: if the answer is obvious, hit me over the head and let me know. Thank you for any info on this !

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• Is there a selector or a work around to select any element with no children.

  - by rnaud

  Looking at the CSS3 specs, I can't find any way to select any element that has no children. Let me explain. <body> <h1>Main Page</h1> <div id="main"> <div class="post"> <h2>Article 1</h1> <p>some text</p> </div> <div class="post"> <h2>Article 2</h1> <p>some text</p> </div> </div> </body> I'm looking for a CSS syntax to select the h1, the two h2 and the two p. A way to select in any page, all elements with no children. Any suggestion ? Sorry, I forgot to add the "empty" part, I am actually already using the *:empty selector, but it's not working for any tag that has a nodeText as a child. So it's working for any input, image, object, but not for h2, h1, or any p.

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• Move and rename file in android

  - by Andre Fróes

  I am trying to copy a file to another folder in the android, but so far, i got no success. I manage to do so with a selected image and when taking a photo, but not with files. I've read and tried several solutions passed by the community (searched over the forum and the internet), but none of it was able to solve my problem when copying. First things first. I added the permissions to my manifest: <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> after that, before copying a file, i print its filepath and the directory file path: 06-10 11:11:11.700: I/System.out(1442): /mimetype/storage/sdcard/Misc/Javascript erros for Submit and Plan buttons in IE.doc 06-10 11:11:11.710: I/System.out(1442): /storage/sdcard/mywfm/checklist-files both exists: to copy the file to the expected folder I used the FileUtils: try { FileUtils.copyFile(selectedFile, dir); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } The problem is: I get no exception and the file isn't there. I tried this solution either: How to move/rename file from internal app storage to external storage on Android? same thing, no exception, but no file either.

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• Can't see anything wrong with simple code

  - by melee

  Here is my implementation file: using namespace std; #include <iostream> #include <iomanip> #include <string> #include <stack> //line 5 #include "proj05.canvas.h" //----------------Constructor----------------// Canvas::Canvas() //line 10 { Title = ""; Nrow = 0; Ncol = 0; image[][]; // line 15 PixelCoordinates.r = 0; PixelCoordinates.c = 0; } //-------------------Paint------------------// line 20 void Canvas::Paint(int R, int C, char Color) { cout << "Paint to be implemented" << endl; } The errors I'm getting are these: proj05.canvas.cpp: In function 'std::istream& operator>>(std::istream&, Canvas&)': proj05.canvas.cpp:11: error: expected `;' before '{' token proj05.canvas.cpp:22: error: a function-definition is not allowed here before '{' token proj05.canvas.cpp:24: error: expected `}' at end of input proj05.canvas.cpp:24: error: expected `}' at end of input These seem like simple syntax errors, but I am not sure what's wrong. Could someone decode these for me? I'd really appreciate it, thanks for your time!

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• disable .click function on an anchor in jquery

  - by user554014

  This is written in an external .js with jquery... I have two windows that slide in and out of view like: $(document).ready(function() { // hides gallery1 as soon as the DOM is ready $('#gallery1').hide(); // shows the menu on click $('#showgal1').click(function() { $('#gallery1').delay(490).show('slide', {direction:'left'}); $('#gallery2').hide('slide', {direction:'right'}); //need code to disable showgal1 and enable showgal2 }); $('#showgal2').click(function() { $('#gallery2').delay(490).show('slide', {direction:'right'}); $('#gallery1').hide('slide', {direction:'left'}); //need code to disable showgal2 and enable showgal1 }); }); 'gallery1' and 'gallery2' are DIV's with flash image galleries and 'showgal1' and 'showgal2' are id's of anchors... looks like <a href="#" id="showgal1">gallery 1</a> I cannot find a way to disable the .click function when one is clicked and re-enable the other... i want to disable 'showgal1' by default and when 'showgal2' event takes place it removes the attribute and makes 'showgal2' disabled until 'showgal1' is clicked... the .attr('disabled','disabled') hasn't worked yet...

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• How can I prevent the scaling of a UIWebview's content after reorientation?

  - by frankhermes

  I'm building an iOS 5/6 app that has a UIWebView. It loads some HTML that I have embedded in my app. Now when I rotate my device, the WebView changes its size (as I want it to fill the entire width of the screen). And then it gets weird: some content gets scaled up and some content doesn't get scaled up. See this image with some example text in it: As you can see, the header (H6) stays the same, while the paragraph gets scaled up. Does anybody have an idea how to prevent this? I want the html to look the same in landscape as it does in portrait mode. I've tried setting the viewport scaling to 1: <meta name="viewport" content="initial-scale=1.0,max-scale=1.0"> but that doesn't help. The body's font-size style is set to 14px, but changing that to 14pt or a percentage also made no difference. Setting the width of the body to 100% also didn't help. Strangely, removing the line break (<br/>) that's in the text fixes it but I need line breaks to be in there so that's no solution. The only thing that does work is reloading the UIWebView's content after an orientation change, but that doesn't prevent it from looking wrong during rotation, and it resets any scrolling that the user may have done. Any ideas?

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• how to tune BufferedInputStream read()?

  - by technomax

  I am reading a BLOB column from a Oracle database, then writing it to a file as follows: public static int execute(String filename, BLOB blob) { int success = 1; try { File blobFile = new File(filename); FileOutputStream outStream = new FileOutputStream(blobFile); BufferedInputStream inStream = new BufferedInputStream(blob.getBinaryStream()); int length = -1; int size = blob.getBufferSize(); byte[] buffer = new byte[size]; while ((length = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, length); outStream.flush(); } inStream.close(); outStream.close(); } catch (Exception e) { e.printStackTrace(); System.out.println("ERROR(img_exportBlob) Unable to export:"+filename); success = 0; } } The file size is around 3MB and it takes 40-50s to read the buffer. Its actually a 3D image data. So, is there any way by which I can reduce this time?

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• jQuery async ajax query and returning value problem (scope, closure)

  - by glebovgin

  Hi. Code not working because of async query and variable scope problem. I can't understand how to solve this. Change to $.ajax method with async:false - not an option. I know about closures, but how I can implement it here - don't know. I've seen all topics here about closures in js and jQuery async problems - but still nothing. Help, please. Here is the code: var map = null; var marker; var cluster = null; function refreshMap() { var markers = []; var markerImage = new google.maps.MarkerImage('/images/image-1_32_t.png', new google.maps.Size(32, 32)); $.get('/get_users.php',{},function(data){ if(data.status == 'error') return false; var users = data.users; // here users.length = 1 - this is ok; for(var i in users) { //here I have every values from users - ok var latLng = new google.maps.LatLng(users[i].lat, users[i].lng); var mark = new google.maps.Marker({ position: latLng, icon: markerImage }); markers.push(mark); alert(markers.length); // length 1 } },'json'); alert(markers.length); // length 0 //if I have alert() above - I get result cluster = new MarkerClusterer(map, markers, { maxZoom: null, gridSize: null }); } Thanks.

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• Using unions to simplify casts

  - by Steven Lu

  I realize that what I am trying to do isn't safe. But I am just doing some testing and image processing so my focus here is on speed. Right now this code gives me the corresponding bytes for a 32-bit pixel value type. struct Pixel { unsigned char b,g,r,a; }; I wanted to check if I have a pixel that is under a certain value (e.g. r, g, b <= 0x10). I figured I wanted to just conditional-test the bit-and of the bits of the pixel with 0x00E0E0E0 (I could have wrong endianness here) to get the dark pixels. Rather than using this ugly mess (*((uint32_t*)&pixel)) to get the 32-bit unsigned int value, i figured there should be a way for me to set it up so I can just use pixel.i, while keeping the ability to reference the green byte using pixel.g. Can I do this? This won't work: struct Pixel { unsigned char b,g,r,a; }; union Pixel_u { Pixel p; uint32_t bits; }; I would need to edit my existing code to say pixel.p.g to get the green color byte. Same happens if I do this: union Pixel { unsigned char c[4]; uint32_t bits; }; This would work too but I still need to change everything to index into c, which is a bit ugly but I can make it work with a macro if i really needed to.

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• Designing for varying mobile device resolutions, i.e. iPhone 4 & iPhone 3G

  - by Josh

  As the design community moves to design applications & interfaces for mobile devices, a new problem has arisen: Varying Screen DPI's. Here's the situation: Touch: * iPhone 3G/S ~ 160 dpi * iPhone 4 ~ 300 dpi * iPad ~ 126 dpi * Android device @ 480p ~ 200 dpi Point / click: * Laptop @ 720p ~ 96 dpi * Desktop @ 720p ~ 72 dpi There is certainly a clear distinction between desktop and mobile so having two separate front-ends to the same app is logical, especially when considering one is "touch"-based and the other is "point/click"-based. The challenge lies in designing static graphical elements that will scale between, say, 160 dpi and 300+ dpi, and get consistent and clean design across zoom levels. Any thoughts on how to approach this? Here are some scenarios, but each has drawbacks as well: * Design a single set of assets (high resolution), then adjust zoom levels based on detected resolution / device o Drawbacks: Performance caused by code layering, varying device support of Zoom * Develop & optimize multiple variations of image and CSS assets, then hide / show each based on device o Drawbacks: Extra work in design & QA. Anyone have thoughts or experience on how to deal with this? We should certainly be looking at methods that use / support HTML5 and CSS3.

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• How do I force a DIV block to extend to the bottom of a page even if it has no content?

  - by Vince Panuccio

  In the markup shown below, I'm trying to get the content div to stretch all the way to the bottom of the page but it's only stretching if there's content to display. The reason I want to do this is so the vertical border still appears down the page even if there isn't any content to display. Here is my code <body> <form id="form1"> <div id="header"> <a title="Home" href="index.html" /> </div> <div id="menuwrapper"> <div id="menu"> </div> </div> <div id="content"> </div> and my CSS body { font-family: Trebuchet MS, Verdana, MS Sans Serif; font-size:0.9em; margin:0; padding:0; } div#header { width: 100%; height: 100px; } #header a { background-position: 100px 30px; background: transparent url(site-style-images/sitelogo.jpg) no-repeat fixed 100px 30px; height: 80px; display: block; } #header, #menuwrapper { background-repeat: repeat; background-image: url(site-style-images/darkblue_background_color.jpg); } #menu #menuwrapper { height:25px; } div#menuwrapper { width:100% } #menu, #content { width:1024px; margin: 0 auto; } div#menu { height: 25px; background-color:#50657a; } Thanks for taking a look.

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• SVG 100% document height don't work

  - by whizzo

  I'm trying to fill a document with a SVG image using the width="100%" and height="100%" properties, I have height="100%" in html and body tags too, and different colours for body(red) and svg(blue). Result is a full height svg but with a scrollbar in the right, and a thin line of red(body) at the bottom. ¿How can I fill the document with the svg without the scrollbar? Thanks. The code: <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>SVG full page</title> <style> html, body { margin: 0; padding: 0; height: 100%; background-color: #ff0000; } </style> </head> <body> <svg width="100%" height="100%"> <rect x="0" y="0" width="100%" height="100%" fill="#0000ff"></rect> </svg> </body> </html>

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• MVC design pattern in complex iPad app: is one fat controller acceptable?

  - by nutsmuggler

  I am building a complex iPad application; think of it as a scrapbook. For the purpose of this question, let's consider a page with two images over it. My main view displays my doc data rendered as a single UIImage; this because I need to do some global manipulation over them. This is my DisplayView. When editing I need to instantiate an EditorView with my two images as subviews; this way I can interact with a single image, (rotate it, scale it, move it). When editing is triggered, I hide my DisplayView and show my EditorView. In a iPhone app, I'd associate each main view (that is, a view filling the screen) to a view controller. The problem is here there is just one view controller; I've considered passing the EditorView via a modal view controller, but it's not an option (there a complex layout with a mask covering everything and palettes over it; rebuilding it in the EditorView would create duplicate code). Presently the EditorView incorporates some logic (loads data from the model, invokes some subviews for fine editing, saves data back to the model); EditorView subviews also incorporate some logic (I manipulate images and pass them back to the main EditorView). I feel this logic belongs more to a controller. On the other hand, I am not sure making my only view controller so fat a good idea. What is the best, cocoa-ish implementation of such a class structure? Feel free to ask for clarifications. Cheers.

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