Stop screen drag when drawing on a canvas

I'm trying to do a signature capture on a HTML5 canvas. When I try to use a stylus to write on the canvas all it does is drag the screen around. Is there a way to disable the screen drag for certain elements or for the whole web page?
I've tried the Meta "viewport" setting to size the device width and height and also played with the @media "visual" in the CSS but also with no success.
Thanks in advance.
Terry

It's not possible to do this in the current version of Firefox for Android, but you will be able to do it soon using touch events. As long as the Firefox toolbars are off-screen, you can call "event.preventDefault()" on the "touchstart" event to stop the page from scrolling. For more documentation, see:
http://www.w3.org/TR/touch-events/
https://wiki.mozilla.org/Fennec/Features/touch
Touch events are already supported by Safari and by the default Android Browser. They will be also be supported in Firefox 6 for Android, which will be released in August 2011. You can start testing Firefox 6 with touch event support today by downloading an Aurora build:
https://wiki.mozilla.org/Mobile/Platforms/Android#Download_Aurora
(Note: the touch event standard is still in development, and not all browsers support all parts of the specification.)

Similar Messages

  • Stop screen blanking when projector connected?

    Hey all,
    Is there a way to stop screen blanking when a projector is connected? I often leave my MBP connected to a projector, and it gets annoying having to move the mouse every few minutes to keep the projector screen going.
    Thanks!

    What you are experiencing is probably your computer trying to start up its Screen Saver or putting the display to sleep. You can disable both of these in the Energy Saver pane of System Preferences.

  • How To Stop Screen Rotating When Tilting

    That's the question...
    How Do I Stop The Screen Rotating When Tilting?  Drives me nuts!

    Try double clicking the Home button and on the bottom row of the screen go completly to the left past the mucic control and tap on the circle arrow.  That will lock the screen rotation.  This works for the 3 and 4 G iPods. There is no rotation lock for the earlier iPods.

  • How to stop screen expansion when I awake in new os update

    When I awake my Z10 the screen expands or magnifies itself so I have to squeeze it to fit all the screen in. Very annoying any ideas how to stop it?
    Solved!
    Go to Solution.

    Hi pgaffney,
    Please see the following forum post for a resolution to this issue.
    Please go into Settings > Accessibility, and ensure the "Magnify Mode" is disabled.
    Did someone help you? Click Like! Did a post solve your issue? Click Accept as Solution!

  • Line drag when drawing in CS5 with a Wacom

    I am drawing with a brush, using either an Intuos or a Cintiq. Once I have completed one stroke, I lift the pen, place it in a new position, to begin the next stroke. A glitch mistakenly joins the last stroke and the new one wiith a straight line which appears as soon as I start the new line. This happens wether I am using constrained (option key) stroke or not. Why am I having this problem?

    Thanks for the reply. =]
    1GB of RAM seemed to be the average on computers when I bought it, about a year ago. I actually have Photoshop CS4 running and using up less memory than Photoshop Elements 4 was (I think it's currently set to use about 250 MB), and PSE has never had any problems with brush lag.
    If by video card you mean graphics card (Sorry, I'm not very techie-minded), it's an Nvidia GeForce 7050 / nForce 610i. This is what it says on the properties for the video card:
    Driver version: 195.62
    Total available graphics: 383 MB
    Dedicated video memory: 256 MB
    System video memory: 0 MB
    Shared system memory: 127 MB
    Don't know if any of that helps. =/
    I've tried turning off the OpenGL but it makes no difference.
    Is there actually a way to get more RAM? I probably sound really stupid here. But I've always been told there's no way to add more RAM to a computer.
    1 gig of RAM on 32 bit Vista is not that much. Between the OS and the Video card address space alone is using all the RAM up and I can bet you that everything else is being written to the hard drive slwoing things down.
    What video card do you have and how much ram do you have on it?
    Try turning off opengl in photoshop.
    You still need more RAM though.
    >

  • How do I stop screen movement when mouse goes to corners?

    Any Suggestions?

    Hi Jeff,
    I think you accidentally hit CMD+Option+8, do it again, or open System Preferencess>Universal Access>Seeing & turn Zoom OFF.

  • How do I get the screen to refresh when drawing a line larger than the art board

    How do I get the screen to refresh properly when drawing a line larger than the art board when the screen scrolls? Everything turns white in CS6, CS5 and CS4.

    Existing art - not the new art.  The new art just gets a proxy shape - seen in my example as the blue rectangle.  The existing art is what gets smeared as you drag past the edge of the screen.  If it's anything other than an Ilustrator thing, it's a Mac thing. I've never known it to be any other way other than maybe in the past showing blank white instead of stuttered art on probably 10 different macs over the years.
    Take any art that you've ever created.  Zoom in so that your art is bigger than your screen (so that there's somewhere to scroll).  Rectangle tool (or move, scale, rotate(?) something, or draw a line) Start your rectangle anywhere, drag so that you are at the edge of the screen, causing it to scroll.  The existing art will get all effed up.  The rectangle you're drawing will draw as you expect it to - that's not the issue.
    How does Wade take his videos?

  • A magazine's app on my iPad has stopped working.  When I open the Newsstand folder and click on the app, the screen dims briefly, then returns to the Newsstand folder. The other app in my Newsstand folder (Wall Street Journal) opens without any problem.

    A magazine's app on my iPad has stopped working.  When I open the Newsstand folder and click on the app, the screen dims briefly, then returns to the Newsstand folder. The other app in my Newsstand folder (Wall Street Journal) opens without any problem, and this magazine's app opens just fine on my wife's iPad.
    I have deleted the app and reinstalled it from the Apple store and that makes no difference.  I have also done a hard reboot on my iPad with no result.
    Any thoughts about what might be wrong? 

    Hey everyone in Apple world!
    I figured out how to fix the flashing yellow screen problem that I've been having on my MBP!  Yessssss!!!
    I found this super handy website with the golden answer: http://support.apple.com/kb/HT1379
    I followed the instructions on this page and here's what I did:
    Resetting NVRAM / PRAM
    Shut down your Mac.
    Locate the following keys on the keyboard: Command (⌘), Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    Turn on the computer.
    Press and hold the Command-Option-P-R keys before the gray screen appears.
    Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.
    I went through the 6 steps above twice, just to make sure I got rid of whatever stuff was holding up my bootup process.  Since I did that, my MBP boots up just like normal.  No flashing yellow screen anymore!!   
    (Note that I arrived at this solution when I first saw this page: http://support.apple.com/kb/TS2570?viewlocale=en_US)
    Let me know if this works for you!
    Elaine

  • I recently Updated my phone and my front camera stopped working its pitch black but still shows the icons on the screen but when i get off the app and get back on and flip the camera to my face view it works fine

    I recently Updated my phone and my front camera stopped working its pitch black but still shows the icons on the screen but when i get off the app and get back on and flip the camera to my face view it works fine

    Hi there Fgonzalez2015,
    You may find the camera troubleshooting steps in the article below helpful.
    Get help with the camera on your iPhone, iPad, or iPod touch
    You see a closed lens or black screen
    If you see a closed lens or black screen when you open the Camera app, try these steps:
    Make sure that there’s nothing blocking the camera lens. If you’re using a case, try removing it.
    Force the app to close, then open the Camera app again.
    Restart your device, then open the Camera app again.
    If your device has a front and rear camera, try both cameras by tapping the camera swap icon . If you see the closed lens or black screen on only one camera, take your device to an Apple Retail Store or Authorized Service Provider for more help.
    -Griff W.  

  • A magnet fell on my macbook "late 2007 series black" and it stopped working. When i start my macbook up it sits on the white screen. i tried inserting the snow leopard disk to do a clean install but the disk ejects and all i see is the pointer.help please

    A magnet fell on my macbook "late 2007 series black" and it stopped working. When i start my macbook up it sits on the white screen. i tried inserting the snow leopard disk to do a clean install but the disk ejects and all i see is the pointer. i even bought a new hard drive to do the clean install but the same thing happens. Please Help

    Your problem is not Boot Camp, in fact, is your optical drive. Win XP requires indeed sp2, but also the internal drive, does not work from external optical drive.
    For other possible tricks, please use the appropriate Boot Camp forum, not here. Mac OS X may be installed from both external and internal optical drive and/or internal/external partition of a disk, any disk. Windows is not so generous.

  • Screen flicker when dragging documents

    Does anyone experince screen flicker when dragging files from the Finder to the Desktop?
    Here's a short video showing the problem.

    I am running Mountain Lion (OS X 10.8 (12A206j)) and just started to experience similar issues (see image below)  When scrolling up or down a webpage.  It happens randomly, and there are only a few applications open (Photoshop, Pages Safari). I have reset PRAM, but am not holding my breath on that...

  • My 13" macbook just stopped working. When you turn it on you get a white screen and hear a repetitive clicking sound on the left side. Is this the hard drive? Any suggestions on replacement drives?

    My 13" macbook just stopped working. When you turn it on you get a white screen and hear a repetitive clicking sound on the left side. Is this the hard drive? Any suggestions on replacement drives?
    Thanks

    Put your install DVD into the optical drive (CD/DVD drive) and reboot. Be sure to either use the disc that came with your Mac, or, if you installed a later Mac OS X version from disc, use the newer disc. As soon as you hear the boot chime, hold down the "c" key on your keyboard (or the Option Key until the Install Disk shows up) until the apple shows up. That will force your MacBook to boot from the install DVD in the optical drive.
    When it does start up, you'll see a panel asking you to choose your language. Choose your language and press the Return key on your keyboard once. It will then present you with an Installation window. Completely ignore this window and click on Utilities in the top menu and scroll down to Disk Utility and click it. When it comes up is your Hard Drive in the list on the left?
    If it is, then click on the Mac OS partition of your hard drive in the left hand list. Then select the First Aid Tab and run Repair Disk. The Repair Disk button won't be available until you've clicked on the Mac OS partition on your hard drive. If that repairs any problems run it again until the green OK appears and then run Repair Permissions. After repairing use Startup Disk from the same menu to choose your hard drive for restarting from your hard drive.
    If your hard drive isn’t recognized in Disk Utility then your hard drive is probably dead.

  • Blue Screen Crash when iTunes version 9.2 accesses iTunes store

    I have posted on a previous issue regardng blue screen crash when upgrading to iTunes v9.2 but have done a few other things to try to locate the problem.
    Firstly, as this is a shared computer I used a colleagues login details to login into their desktop. Then opened iTunes from there. It opened perfectly normally and found and played music stored on the computer. However, as I had noticed that iTunes was crashing when I was logged in as it was trying to access the iTunes store I then tried to accesss the iTunes store from within iTunes on my colleagues desktop. Hey presto, blue screen crash with the following error:
    * STOP: 0x0000007E (0x0000005, 0xBF271800, 0xA811350c, 0xA8113208)
    * ati3duag.dll - Address BF271800 base at BF16B000, Datestamp 46eb3954
    I then restarted my computer, unplugged it from the network and started iTunes in my desktop. It started normally with no problems. I even synchronised my iPhone without any problems to my music and Outlook (Calendar & Contacts).
    I removed my iPhone, then tried to access the iTunes music store and guess what it went half way through the process and gave the Blue Screen error again.
    Just for completeness sake I did the same thing using my colleagues desktop iTunes access and iTunes did the same thing again (without synching my phone obviously) and when trying to access the store it gets half way through, hangs and then it crashes.
    Any ideas???

    ati3duag.dll
    You're having trouble with the drivers for your ATI Radeon video card or display adapter, lord.
    If you've got a name brand PC and the video card or display adaptor came installed with the PC, head to the drivers and downloads page for your particular model of PC at the PC manufacturers website and try updating your video driver or display adaptor driver.
    If the PC is custom/home-built, or you've added the Radeon to the system yourself, head to the AMD support website (AMD now owns ATI) and look for updated drivers for your particular model of video card or display adaptor.
    If you're already up to date on your drivers, or updating didn't help with the BSOD, try heading into your Device manager and reinstalling your video drivers or Display adaptor drivers.
    Do any of those measures give you any relief?

  • ITextRangeProvider.Move constantly called by screen reader when at end of line.

    I am currently implementing ITextRangeProvider and ITextRange interfaces to allow screen readers
    to gather information from a custom RichText control.
    I am currently having a problem with the JAWS screen reader. 
    When I navigate to the end or beginning of line using the right or left arrow keys JAWS will constantly call ITextRangeProvider.Move in an endless loop. This also blocks the ability to move the caret with the right and left arrow keys. 
    My application appears frozen. This does not happen with the built-in Narrator screen reader.
    When I navigate via the right and left arrow keys on a line of text (without reaching the beginning
    or end of line) the following trace output is generated (The result of right arrowing to the period character “.”:
    int ITextRangeProvider.CompareEndpoints
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Character, int count=1)
    string ITextRangeProvider.GetText(int maxLength=1)
    string ITextRangeProvider.GetText selectedText.Length=1 selectedText="."
    This output repeats 12 times in a row before it stops. 
    Also, when I move the caret my caret location changed handler calls:
    This.radRichTextBoxAutomationPeer.RaiseAutomationEvent(AutomationEvents.TextPatternOnTextSelectionChanged);
    In my Visual Studio output window I see the following:
    RaiseSelectionChanged='ScreenReaderIntegration.TextProvider.RaiseSelectionChanged()' is
    a 'method', which is not valid in the given context
    The repeated trace output for each character and the "method not valid in given context"
    message are consistent for every character right or left arrow navigation except when I right arrow past the last character (in this case the “.”). 
    When I right arrow past the period the lockup and blocked cursor movement happens, the following trace output is generated 7 times:
    int ITextRangeProvider.CompareEndpoints
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Character, int count=1)
    string ITextRangeProvider.GetText(int maxLength=1)
    string ITextRangeProvider.GetText selectedText.Length=2 selectedText="\r\n"
    Then the following trace output happens once:
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.ExpandToEnclosingUnit(TextUnit unit=Format)
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    string ITextRangeProvider.GetText(int maxLength=-1)
    string ITextRangeProvider.GetText selectedText.Length=0 selectedText=""
    Then the following trace output happens in an endless loop while I can no longer move the caret:
    ITextRangeProvider.Move unit=Format count=1
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Format, int count=1)
    int ITextRangeProvider.CompareEndpoints
    string ITextRangeProvider.GetText(int maxLength=-1)
    string ITextRangeProvider.GetText selectedText.Length=0 selectedText=""
    Is this a JAWS screen reader problem because Narrator does not show the same behavior?
    Or, is this a problem with my interface implementation and are there any suggestions as to how
    to proceed to solve this problem?

    I am currently implementing ITextRangeProvider and ITextRange interfaces to allow screen readers
    to gather information from a custom RichText control.
    I am currently having a problem with the JAWS screen reader. 
    When I navigate to the end or beginning of line using the right or left arrow keys JAWS will constantly call ITextRangeProvider.Move in an endless loop. This also blocks the ability to move the caret with the right and left arrow keys. 
    My application appears frozen. This does not happen with the built-in Narrator screen reader.
    When I navigate via the right and left arrow keys on a line of text (without reaching the beginning
    or end of line) the following trace output is generated (The result of right arrowing to the period character “.”:
    int ITextRangeProvider.CompareEndpoints
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Character, int count=1)
    string ITextRangeProvider.GetText(int maxLength=1)
    string ITextRangeProvider.GetText selectedText.Length=1 selectedText="."
    This output repeats 12 times in a row before it stops. 
    Also, when I move the caret my caret location changed handler calls:
    This.radRichTextBoxAutomationPeer.RaiseAutomationEvent(AutomationEvents.TextPatternOnTextSelectionChanged);
    In my Visual Studio output window I see the following:
    RaiseSelectionChanged='ScreenReaderIntegration.TextProvider.RaiseSelectionChanged()' is
    a 'method', which is not valid in the given context
    The repeated trace output for each character and the "method not valid in given context"
    message are consistent for every character right or left arrow navigation except when I right arrow past the last character (in this case the “.”). 
    When I right arrow past the period the lockup and blocked cursor movement happens, the following trace output is generated 7 times:
    int ITextRangeProvider.CompareEndpoints
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Character, int count=1)
    string ITextRangeProvider.GetText(int maxLength=1)
    string ITextRangeProvider.GetText selectedText.Length=2 selectedText="\r\n"
    Then the following trace output happens once:
    void ITextRangeProvider.MoveEndpointByRange
    void ITextRangeProvider.ExpandToEnclosingUnit(TextUnit unit=Format)
    void ITextRangeProvider.MoveEndpointByRange
    int ITextRangeProvider.CompareEndpoints
    string ITextRangeProvider.GetText(int maxLength=-1)
    string ITextRangeProvider.GetText selectedText.Length=0 selectedText=""
    Then the following trace output happens in an endless loop while I can no longer move the caret:
    ITextRangeProvider.Move unit=Format count=1
    int ITextRangeProvider.MoveEndpointByUnit(TextPatternRangeEndpoint endpoint, TextUnit
    unit=Format, int count=1)
    int ITextRangeProvider.CompareEndpoints
    string ITextRangeProvider.GetText(int maxLength=-1)
    string ITextRangeProvider.GetText selectedText.Length=0 selectedText=""
    Is this a JAWS screen reader problem because Narrator does not show the same behavior?
    Or, is this a problem with my interface implementation and are there any suggestions as to how
    to proceed to solve this problem?

  • Serious screen lag when typing in fields with Safari, Chrome, etc.

    With my MacBook Pro 15" i7 I'm experiencing a serious lag time when typing comments in posts online... like right now.. I'll type a few words and nothing shows up on the screen until I stop typing. Then the rest of the words leisurely fill in after I stop.
    This happens in Safari, Chrome, Firefox, etc. On my iMac 27" i7 and MacPro, using the same Airport wi-fi in my house, I do not experience this.
    When I type in Mail, TextEdit, etc., as I type the letters show up as fast as I can type.
    I've got 8GB of RAM, 4GB of free RAM, a MacBook Pro15" i7, 500GB 7200 RPM HDD with plenty of space on it, recently fixed permissions, checked disk with Disk Utility AND DiskWarrior, re-booted, cleared caches, checked for current firmware... what now?
    This doesn't happen on my other Macs, so I know something is up with this machine. (I typed that entire last sentence in before anything showed up on the screen - then when I stopped, after a few seconds, the words filled in.)
    Driving me bonkers! Can anyone offer a solution?

    Im am having the same problems never happen before -15inch macbook pro i7 4 gb ram 500 gb 7200 rpm hd... curious that we both have the 7200 rpm!!?? ....On 2nd laptop same problem and after days with apple online and store -still no answer ....  Here is a link for another thread i'm on with further lag issues im having...
    http://forums.macrumors.com/showthread.php?p=12450126&posted=1#post12450126

Maybe you are looking for