Handling mouse events on transparent window conditionally
Hi, I am developing an Desktop application in which I should be able to take mouse events on transparent window. But, transparent NSWindow does not take mouse events. So, I have set setIgnoreMouseEvents to NO which allows the transparent window to take mouse events. I have the problem in the following scenario: There is dynamically created rectangular shape on this window. The transparent window should not take mouse events in this region; it should be delegated to the window (of some other app) that is present behind this shape. For this purpose, if the mouseDown event is inside the shape I am setting setIgnoreMouseEvents to YES. Now, if the user performs mouse events in the area outside the shape the transparent window should take the event. Since, setIgnoreMouseEvents is set to YES, window does not take mouse events. There is no way to identify that mouseDown event has occurred so that I can set setIgnoreMouseEvents to NO. Could someone suggest me some best method to handle mouse events on transparent window? Thanks and Regards, Deepa--- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: Event Tap(CFMachPortRef) problem for Hot Key- callback is not invoked
Hi Daniel,
Thank you for the response.
Our app provides the user with an option of using system shortcut keys for
capturing.
For example,
Suppose Cmd+Shift+4 is the system shortcut used to capture the full screen;
user can use the same combination of keys to capture the full screen from my
app.
If I use the Hot key API RegisterEventHotKey(), I cannot override the system
behavior with my app behavior for the shortcut Cmd+Shift+4.
So, I am using the tapping mechanism if user wants to override system behavior.
But, sometimes I do not get any callback. How do I solve this?
Regards,
Deepa
On 08-Mar-2011, at 2:31 PM, Jean-Daniel Dupas wrote:
Le 8 mars 2011 à 04:40, Deepa a écrit :
Hi,
I am developing a desktop application that supports one of the feature
through Hot Key. I am using Event Tap for this to work.
But, sometimes (randomly) the callback is not invoked; Hot Key does not work
and hence the feature seems to be not working.
Could someone help me out in identifying the problem here.
Following is the code snippet:
-( void )startEventTapinThread //Called in a separate thread.
{
NSAutoreleasePool *pool =[ [ NSAutoreleasePool alloc] init];
CFRunLoopRef runloop =(CFRunLoopRef)CFRunLoopGetCurrent();
CGEventMask interestedEvents =
CGEventMaskBit(kCGEventFlagsChanged)|CGEventMaskBit(kCGEventKeyDown);
CFMachPortRef eventTap = CGEventTapCreate(kCGSessionEventTap,
kCGHeadInsertEventTap, 0, interestedEvents, myCGEventCallback, self);
//self is the object pointer our method
CFRunLoopSourceRef source =
CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0);
CFRunLoopAddSource((CFRunLoopRef)runloop , source,
kCFRunLoopCommonModes);
CFRunLoopRun();
[ pool release];
}
CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type,
CGEventRef event, void *refcon)
{
CGEventType eventType = CGEventGetType(event);
//execute the code related to feature
}
Why you don't use the HotKey API instead (RegisterEventHotKey()) ? It does
not require root access or accessibility enabled and it works quite well.
-- Jean-Daniel
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Event Tap(CFMachPortRef) problem for Hot Key- callback is not invoked
Hi,
I am developing a desktop application that supports one of the feature through
Hot Key. I am using Event Tap for this to work.
But, sometimes (randomly) the callback is not invoked; Hot Key does not work
and hence the feature seems to be not working.
Could someone help me out in identifying the problem here.
Following is the code snippet:
-( void )startEventTapinThread //Called in a separate thread.
{
NSAutoreleasePool *pool =[ [ NSAutoreleasePool alloc] init];
CFRunLoopRef runloop =(CFRunLoopRef)CFRunLoopGetCurrent();
CGEventMask interestedEvents =
CGEventMaskBit(kCGEventFlagsChanged)|CGEventMaskBit(kCGEventKeyDown);
CFMachPortRef eventTap = CGEventTapCreate(kCGSessionEventTap,
kCGHeadInsertEventTap, 0, interestedEvents, myCGEventCallback, self);
//self is the object pointer our method
CFRunLoopSourceRef source =
CFMachPortCreateRunLoopSource(kCFAllocatorDefault, eventTap, 0);
CFRunLoopAddSource((CFRunLoopRef)runloop , source,
kCFRunLoopCommonModes);
CFRunLoopRun();
[ pool release];
}
CGEventRef myCGEventCallback(CGEventTapProxy proxy, CGEventType type,
CGEventRef event, void *refcon)
{
CGEventType eventType = CGEventGetType(event);
//execute the code related to feature
}
Thanks and Regards,
Deepa---
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API to check if the screen is zoomed
Hi, I am developing an Desktop application in which I want to perform some operation if the System screen is zoomed. Is there any API to identify if the screen is zoomed or not. If notification is the solution that will not work for me. Because, the screen might have been zoomed before my app is launched. Is there any way to handle this? Thanks and Regards, Deepa--- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
The 'Open with' option is automatically changed with my app when my app is installed
Hi, I am developing an Desktop application which organizes and plays movie files. So, I have added the mp4, mov, avi, m4v (mp4, mov, avi, m4v extensions) as document type under Properties of my application target. The problem is that when the user installs my app in Applications folder of his system, the default option for opening the mp4 movie file changes to Voila from QuickTime Player automatically. The default option is nothing but the 'Open With' option provided in the Info window of a file. This happens for most of the users. Why is this happening? How do I solve this? Thanks and Regards, Deepa--- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: original image size is not retained when it is exported as PDF using CGImageDestinationRef
Thank you Kyle, David. Regards, Deepa On 01-Mar-2011, at 1:31 PM, Kyle Sluder wrote: On Feb 28, 2011, at 8:29 PM, Deepa de...@robosoftin.com wrote: The CoreGraphics-Dev is not getting listed under Apple Mailing lists. Could you please mention the steps to register to this category of Apple Mailing list? I think he meant quartz-dev. --Kyle Sluder --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Re: original image size is not retained when it is exported as PDF using CGImageDestinationRef
Hi David, Thank you for the response. On 01-Mar-2011, at 2:47 AM, David Duncan wrote: On Feb 25, 2011, at 4:16 AM, Deepa wrote: Please correct if I am posting to wrong mailing list. In general for CG functions, the CoreGraphics-Dev list is a better choice. The CoreGraphics-Dev is not getting listed under Apple Mailing lists. Could you please mention the steps to register to this category of Apple Mailing list? I am developing a Desktop application that supports exporting an PNG image to different image formats. When I export my PNG to (Refer the first link) to PDF format, it appears as shown in link2. http://www.flickr.com/photos/36018837@N05/5472635835/ (Original Image) http://www.flickr.com/photos/36018837@N05/5473232908/ (Exported Image) In general, you should use a service that allows you to post the actual files involved, as flickr appears to be making it rather difficult to obtain the originals (and I'm not certain if I could obtain a PDF for the exported image or not). The image has become larger. My first guess would be that the source image has a DPI 72, which would cause its display size to be smaller than that of the PDF. Barring that, ImageIO's PDF export may just be to make the image a size that fits the page. I think the problem might be due to that ImageIO's PDF export may just be to make the image a size that fits the page. I would recommend that rather than allowing ImageIO to export to PDF that you use the CG APIs to generate PDF data yourself, where you can have control over the process. As you said, I might have to try this out. -- David Duncan Regards, Deepa --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Conditionally adding NSButtonCell to a column of NSTableview and allowing button cell to take action even if the corresponding row is not allowed to be selected
Hi, I am developing an Desktop application for 10.5, 10.6. My requirements are as follows: I am already displaying a NSTableview with one column. The tableview is disabled and I do not allow the user to select any row of the tableview. In each row of this column I display a NSTextFieldCell. Now, I want to add one more column that displays NSButtonCell in a row when some condition on that row is satisfied. User should be able to click on this button and send some action. If I disable the tableview or if I do not allow the user to select the row of a tableview, the button cell does not take any action. How do I achieve this? Also, what is the best way to conditionally add a cell to a row? Thanks in advance. Regards, Deepa--- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
original image size is not retained when it is exported as PDF using CGImageDestinationRef
Hi,
Please correct if I am posting to wrong mailing list.
I am developing a Desktop application that supports exporting an PNG image to
different image formats.
When I export my PNG to (Refer the first link) to PDF format, it appears as
shown in link2.
http://www.flickr.com/photos/36018837@N05/5472635835/ (Original Image)
http://www.flickr.com/photos/36018837@N05/5473232908/ (Exported Image)
The image has become larger.
Why does this happen? Am I doing something wrong in the code? How do I solve
this?
Following is the code snippet that I use for export:
//filePath: Destination path
//exportType: kUTTypePDF
CGImageDestinationRef imageDestination =
CGImageDestinationCreateWithURL((CFURLRef)filePath,(CFStringRef
)exportType,1,NULL);
BOOL success = NO;
if( imageDestination != NULL )
{
CGImageRef imageRef = [ inImage createCGImage ];
if( imageRef != NULL )
{
CGImageDestinationAddImage(imageDestination, imageRef, NULL);
success = CGImageDestinationFinalize(imageDestination);
CGImageRelease(imageRef );
}
CFRelease( imageDestination );
}
Thanks in advance.
Regards,
Deepa
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Reading image from system clipboard
Hi, I am developing an desktop app for which I want to implement a behavior which is similar to 'New from clipboard' of Preview application. I tried using NSPasteboard: // To get file copied to clipboard from Finder NSArray *files = [[NSPasteboard generalPasteboard] propertyListForType: NSFilenamesPboardType]; This returns array of files copied to the clipboard // To get tiff image NSData *pbData = [[NSPasteboard generalPasteboard] dataForType: NSTIFFPboardType]; CIImage *pbImg = [CIImage imageWithData: pbData]; But this doesn't return null (tiff image data was copied to the clipboard). Am I doing something wrong here??? Can someone help me out to sove this problem. I also wanted to know a method which copies and reads jpeg/gif/png image formats to/from system clipboard. Thanks in advance. Thanks and Regards, Deepa de...@robosoftin.com --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Problem in copying files to the system clipboard
Hi, I am developing an desktop application in which I want to copy the multiple image files to the system clipboard. When I try to paste it in the Finder, the image files should be pasted. This is the behavior similar to Finder Copy-Paste. (I want to copy the file paths which when pasted, actual file is pasted; Not file paths in text/string format). I tried using NSFilenamesPboardType, NSFIleContentsPboardType. But system clipboard doesn't accept it. The code using NSFilenamesPboardType: NSPasteboard *pasteboard =[NSPasteboard pasteboardWithName: NSGeneralPboard]; [pasteboard declareTypes:[NSArray arrayWithObjects:NSFilenamesPboardType,nil] owner:nil]; [pasteboard setPropertyList: filePaths forType: NSFilenamesPboardType]; // filePaths is array of files paths of images When I tried to access propertyList from the pasteboard within the application, I could get the array of file paths. But, it doesn't add anything to the system clipboard. So, I am not able to copy the files to the other applications. (I don't want to use Drag and Drop to support inter-app copy-paste). Could anyone help me out to solve this problem. Thanks in advance. Thanks and Regards, Deepa de...@robosoftin.com --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Web cam: Camera used by another application
Hi, I am using QTKit APIs for streaming from webcam. I get the error message 'Camera used by another application' for some of the webcams. But, no other application was using this webcam. The applications like Photobooth, iChat can stream properly from this webcam Following are the steps to stream from the device: 1. Open the input device: [inputDevice open: error] It opens the device successfully without any error. 2. add input device to capture session: [captureSession addInput: inputDevice error: error] 3. Call [captureSession startRunning] But, it displays a message 'Camera used by another application' in QTCaptureView( We are not sure whether it is put up by QTkit framework or the webcam driver). We also get the following console log: usbConnectToCam-USBDeviceOpen: Error: kIOReturnExclusiveAccess - exclusive access and device already open Can anyone help me out to solve this problem. Thanks in advance, Deepa de...@robosoftin.com --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
Query regarding cursor change
Hi, I am developing an application for Leopard which is similar to the feature 'Open a part of this page in Dashboard' in Safari. In addition to this, I also want to change the cursor when it enters specific area. I have added a transparent window as a child of my Main Window and am handling all my drawing(Highlight) in the view added to the child window. But, this child window cannot be made key window in my application for the following reasons: i) Menu validation problems ii) If web view is placed in main window, scrollbar of the web view looks disabled when child window is key window. iii) If web view is placed in key window, then scrollbar of the web view looks disabled when we click on main window. But, cursor will change only if the child window is key window. Is there any other way to track the cursor change. Can someone help me out to resolve this issue. Thanks and regards, Deepa de...@robosoftin.com --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
MobileMe API for uploading photos
Hi All, Are there any APIs available for uploading photos to MobileMe account? Thanks in advance. Regards, Deepa --- Robosoft Technologies - Come home to Technology Disclaimer: This email may contain confidential material. If you were not an intended recipient, please notify the sender and delete all copies. Emails to and from our network may be logged and monitored. This email and its attachments are scanned for virus by our scanners and are believed to be safe. However, no warranty is given that this email is free of malicious content or virus. ___ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
