Re: Icon Overlay on Mac OSX

[KappA]

Thanks. Yeah this too seems a bit messy, as you also have to take the quick
look preview into consideration. (when switching the various Finder views).

On Thu, Aug 2, 2012 at 10:37 PM, Charles Srstka wrote:

> On Aug 2, 2012, at 9:26 PM, Jens Alfke  wrote:
>
> On Aug 2, 2012, at 6:54 PM, KappA  wrote:
>
> get the attributes
> get the icon
> composite the overlay
> set the icon
> set the attributes
>
>
> This has an obvious race condition, but it should work most of the time.
> If you don't change the icon often, you should be OK.
>
>
> Again, except for the fact that you will overwrite any custom icons that
> the user has decided to put on the files.
>
> Charles
>
>
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Re: Icon Overlay on Mac OSX

[Charles Srstka]

On Aug 2, 2012, at 9:26 PM, Jens Alfke  wrote:

> On Aug 2, 2012, at 6:54 PM, KappA  wrote:
> 
>> get the attributes
>> get the icon
>> composite the overlay
>> set the icon
>> set the attributes
> 
> This has an obvious race condition, but it should work most of the time. If 
> you don't change the icon often, you should be OK.

Again, except for the fact that you will overwrite any custom icons that the 
user has decided to put on the files.

Charles

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Re: Icon Overlay on Mac OSX

[Jens Alfke]

On Aug 2, 2012, at 6:54 PM, KappA  wrote:

> get the attributes
> get the icon
> composite the overlay
> set the icon
> set the attributes

This has an obvious race condition, but it should work most of the time. If you 
don't change the icon often, you should be OK.

> I am not sure how this affects MD5 checksum, I am going to look into that 
> next...

It doesn't, because it doesn't affect the contents of the file. Unless you use 
a fancy checksum tool that incorporates all the extended-attribute metadata.

It *is* going to affect the disk space used, though. Since a 512x512 32-bit 
icon is a megabyte in size, that means you may be adding 1MB per file you 
badge. That can add up. And it's not at all obvious to a user where that space 
went, or how to recover it. So I would avoid doing this to lots of files.

It also slows down the Finder a bit since it has to open the file and read the 
icon instead of just looking it up from a cache based on the file-type. (This 
can be really painful when viewing that folder over AFP file sharing, in fact 
IIRC the Finder may turn off the display of custom icons on remote folders for 
this reason.)

—Jens
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Re: Icon Overlay on Mac OSX

[KappA]

I have been playing around with that -

get the attributes
get the icon
composite the overlay
set the icon
set the attributes

When I print out the attributes before/after they match - now this only
works for files that you have access to (it failed for a few files owned by
root).

I am not sure how this affects MD5 checksum, I am going to look into that
next...

On Thu, Aug 2, 2012 at 9:21 PM, Alfian Busyro wrote:

> Which you guys mean I have to create the overlay to an Image it self then
> stick it to a file icon ?
> I'd try this before but nothing was changed. maybe I'll have try this once
> again.
>
> And for file attributes, can we use setAttributes:ofItemAtPath:**error:
> from NSFileManager ?
> because there is NSFileModificationDate attributes for in this function.
>
> Regards,
> Alfian
>
> On 12/08/03 5:47, Charles Srstka wrote:
>
>> On Aug 2, 2012, at 3:41 PM, KappA  wrote:
>>
>>  I believe setIcon updates the file modification date... (please check as
>>> I
>>> can't remember for sure)... which might go against what a file tracking
>>> system might be trying to do.
>>>
>>> i.e. will give false file modification updates because of setting the
>>> updated icons.
>>>
>>> If there is a way to do that without updating the file attributes, it
>>> would
>>> work perfectly...
>>>
>> In addition to this, it will hose any custom icons that the user might
>> have set on the files.
>>
>> Charles
>>
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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

Which you guys mean I have to create the overlay to an Image it self 
then stick it to a file icon ?
I'd try this before but nothing was changed. maybe I'll have try this 
once again.


And for file attributes, can we use setAttributes:ofItemAtPath:error: 
from NSFileManager ?

because there is NSFileModificationDate attributes for in this function.

Regards,
Alfian

On 12/08/03 5:47, Charles Srstka wrote:

On Aug 2, 2012, at 3:41 PM, KappA  wrote:


I believe setIcon updates the file modification date... (please check as I
can't remember for sure)... which might go against what a file tracking
system might be trying to do.

i.e. will give false file modification updates because of setting the
updated icons.

If there is a way to do that without updating the file attributes, it would
work perfectly...

In addition to this, it will hose any custom icons that the user might have set 
on the files.

Charles

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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

Which you guys mean I have to create the overlay to an Image it self 
then stick it to a file icon ?
I'd try this before but nothing was changed. maybe I'll have try this 
once again.


And for file attributes, can we use setAttributes:ofItemAtPath:error: 
from NSFileManager ?

because there is NSFileModificationDate attributes for in this function.

Regards,
Alfian

On 12/08/03 5:47, Charles Srstka wrote:

On Aug 2, 2012, at 3:41 PM, KappA  wrote:


I believe setIcon updates the file modification date... (please check as I
can't remember for sure)... which might go against what a file tracking
system might be trying to do.

i.e. will give false file modification updates because of setting the
updated icons.

If there is a way to do that without updating the file attributes, it would
work perfectly...

In addition to this, it will hose any custom icons that the user might have set 
on the files.

Charles

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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

I'll take a look of this.

Thanks,
Alfian

On 12/08/02 14:55, Charles Srstka wrote:

On Aug 2, 2012, at 12:47 AM, Jens Alfke  wrote:


On Jul 18, 2012, at 2:42 AM, Alfian Busyro  wrote:


I tried this CTBadge, and it gave me a custom application icon after I run it.
So a little bit different with what I want to do though.
Do you have any idea how to implement this to the finder , without injecting it 
like dropbox did.

Set custom icons for the files? (I have no idea how custom file icons are done 
nowadays, though. They used to be stored in the resource fork, but that's been 
deprecated for a decade now. Maybe they're in extended file attributes?)

They're still in the resource fork (which itself is an extended file attribute).

Charles

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Re: Icon Overlay on Mac OSX

[Charles Srstka]

On Aug 2, 2012, at 3:41 PM, KappA  wrote:

> I believe setIcon updates the file modification date... (please check as I
> can't remember for sure)... which might go against what a file tracking
> system might be trying to do.
> 
> i.e. will give false file modification updates because of setting the
> updated icons.
> 
> If there is a way to do that without updating the file attributes, it would
> work perfectly...

In addition to this, it will hose any custom icons that the user might have set 
on the files.

Charles

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Re: Icon Overlay on Mac OSX

[KappA]

I believe setIcon updates the file modification date... (please check as I
can't remember for sure)... which might go against what a file tracking
system might be trying to do.

i.e. will give false file modification updates because of setting the
updated icons.

If there is a way to do that without updating the file attributes, it would
work perfectly...

Kappa.

On Thu, Aug 2, 2012 at 4:22 PM, Uli Kusterer
wrote:

> On 02.08.2012, at 07:47, Jens Alfke  wrote:
> > Set custom icons for the files? (I have no idea how custom file icons
> are done nowadays, though. They used to be stored in the resource fork, but
> that's been deprecated for a decade now. Maybe they're in extended file
> attributes?)
>
>  NSWorkspace has a setIcon: forPath: method (or something like that) for
> this purpose. I think it was added around 10.6, might even be older. Or
> maybe it was NSFileManager. I mentioned it previously in this thread, not
> gonna look it up a second time.
>
> Cheers,
> -- Uli Kusterer
> "The Witnesses of TeachText are everywhere..."
>
>
>
>
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Re: Icon Overlay on Mac OSX

[Uli Kusterer]

On 02.08.2012, at 07:47, Jens Alfke  wrote:
> Set custom icons for the files? (I have no idea how custom file icons are 
> done nowadays, though. They used to be stored in the resource fork, but 
> that's been deprecated for a decade now. Maybe they're in extended file 
> attributes?)

 NSWorkspace has a setIcon: forPath: method (or something like that) for this 
purpose. I think it was added around 10.6, might even be older. Or maybe it was 
NSFileManager. I mentioned it previously in this thread, not gonna look it up a 
second time.

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."




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Re: Icon Overlay on Mac OSX

[Charles Srstka]

On Aug 2, 2012, at 12:47 AM, Jens Alfke  wrote:

> On Jul 18, 2012, at 2:42 AM, Alfian Busyro  wrote:
> 
>> I tried this CTBadge, and it gave me a custom application icon after I run 
>> it.
>> So a little bit different with what I want to do though.
>> Do you have any idea how to implement this to the finder , without injecting 
>> it like dropbox did.
> 
> Set custom icons for the files? (I have no idea how custom file icons are 
> done nowadays, though. They used to be stored in the resource fork, but 
> that's been deprecated for a decade now. Maybe they're in extended file 
> attributes?)

They're still in the resource fork (which itself is an extended file attribute).

Charles

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Re: Icon Overlay on Mac OSX

[Jens Alfke]

On Jul 18, 2012, at 2:42 AM, Alfian Busyro  wrote:

> I tried this CTBadge, and it gave me a custom application icon after I run it.
> So a little bit different with what I want to do though.
> Do you have any idea how to implement this to the finder , without injecting 
> it like dropbox did.

Set custom icons for the files? (I have no idea how custom file icons are done 
nowadays, though. They used to be stored in the resource fork, but that's been 
deprecated for a decade now. Maybe they're in extended file attributes?)

—Jens
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Re: Icon Overlay on Mac OSX

[Charles Srstka]

On Jul 18, 2012, at 4:42 AM, Alfian Busyro  wrote:

> Hi Gideon,
> Thanks for your reply.
> 
> I tried this CTBadge, and it gave me a custom application icon after I run it.
> So a little bit different with what I want to do though.
> Do you have any idea how to implement this to the finder , without injecting 
> it like dropbox did.
> 
> With Regards,
> 
> Alfian

Nope.

Charles

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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

Hi Gideon,
Thanks for your reply.

I tried this CTBadge, and it gave me a custom application icon after I 
run it.

So a little bit different with what I want to do though.
Do you have any idea how to implement this to the finder , without 
injecting it like dropbox did.


With Regards,

Alfian

On 12/07/18 14:45, Gideon King wrote:
You might like to check out CTBadge - there are a couple of minor 
memory issues in the current release which will be picked up in 
Xcode's analyze function, but apart from that, it will probably point 
you in the right direction.


http://blog.oofn.net/2006/01/08/badging-for-everyone/


Regards

Gideon


On 09/07/2012, at 3:34 PM, Alfian Busyro > wrote:



Hi,

I'm a newbie in Cocoa framework, XCode and also Obj-C.
I'm still struggling to create an icon overlay in finder like the one 
in that dropbox did.





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Re: Icon Overlay on Mac OSX

[koko]

On Jul 22, 2012, at 11:02 PM, Alfian Busyro wrote:

>> So essentially you'd be building a (very limited and much simpler) 
>> mini-Finder that only does what is needed for your application.

We do this with our apps and it is a good approach.

-koko

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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

Actually I'd like to do this.
But I'm not the man who made the specification,
and my superior want it in the app.

Btw, thanks for all replies.

Regards,
Alfian

On 12/07/21 2:28, Uli Kusterer wrote:

On 18.07.2012, at 12:37, Alfian Busyro wrote:

Just like I thought, injecting code is not a good way to do this.
So, is it impossible to do this without injecting code to Finder ?

BTW -- just because nobody has mentioned it yet: You can also take the approach 
many other applications use: Create your own window, with your own list of 
files, and show whatever information you wanted to show in an overlay on 
Finder's icon. You can ask NSWorkspace for the icon you should show for a file, 
and then display that in one column of your NSTableView, for example. And 
NSWorkspace can also open a file just like Finder would do. And you can ask 
NSFileManager for the list of files in a particular folder. So essentially 
you'd be building a (very limited and much simpler) mini-Finder that only does 
what is needed for your application.

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.masters-of-the-void.com






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Re: Icon Overlay on Mac OSX

[Uli Kusterer]

On 18.07.2012, at 12:37, Alfian Busyro wrote:
> Just like I thought, injecting code is not a good way to do this.
> So, is it impossible to do this without injecting code to Finder ?

BTW -- just because nobody has mentioned it yet: You can also take the approach 
many other applications use: Create your own window, with your own list of 
files, and show whatever information you wanted to show in an overlay on 
Finder's icon. You can ask NSWorkspace for the icon you should show for a file, 
and then display that in one column of your NSTableView, for example. And 
NSWorkspace can also open a file just like Finder would do. And you can ask 
NSFileManager for the list of files in a particular folder. So essentially 
you'd be building a (very limited and much simpler) mini-Finder that only does 
what is needed for your application.

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://www.masters-of-the-void.com




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Re: Icon Overlay on Mac OSX

[David Catmull]

Uli Kusterer  wrote:
> In the old days, one could use Icon Services calls to change the icon used 
> for a particular file type, that might even save you the renaming, but Icon 
> Services is probably considered "old" API these days, and I'm not sure if 
> changes to icons in your app using Icon Services will still affect Finder. 
> Anyway, it's worth a try.

That worked back in Mac OS 9, but as of Mac OS X, changing icons like that 
doesn't affect other applications.
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Re: Icon Overlay on Mac OSX

[Lee Ann Rucker]

On Jul 8, 2012, at 10:34 PM, Alfian Busyro wrote:
> 
> 
> I want to ask you guy's opinion about this issue.

My opinion: No way on earth am I letting Dropbox near my system.

> And if some of you guys have an experience with it, please share it with me.

There are official ways to change the Dock icon - see [NSApplication dockTile] 
- and you can have some fun with that. That would be a cool newbie project; I 
think there's even a sample app for it.

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Re: Icon Overlay on Mac OSX

[Jens Alfke]

On Jul 18, 2012, at 3:37 AM, Alfian Busyro  wrote:

> Just like I thought, injecting code is not a good way to do this.
> So, is it impossible to do this without injecting code to Finder ?

Yes, it is impossible. The Finder is not meant to be extended/hacked and has no 
API for this. This is absolutely not something you should be attempting as a 
newbie project. Please think of something easier to do.

—Jens
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Re: Icon Overlay on Mac OSX

[Uli Kusterer]

On 18.07.2012, at 12:37, Alfian Busyro wrote:
> Just like I thought, injecting code is not a good way to do this.
> So, is it impossible to do this without injecting code to Finder ?

 For what purpose do you need this? If you only need a small number of 
animation steps, you could just set up a different filename suffix for each 
step, specify a different icon (all in your Info.plist) and then rename the 
file whenever you need the next step. Would that work in your case?

 In the old days, one could use Icon Services calls to change the icon used for 
a particular file type, that might even save you the renaming, but Icon 
Services is probably considered "old" API these days, and I'm not sure if 
changes to icons in your app using Icon Services will still affect Finder. 
Anyway, it's worth a try.

 Finally, you could use a custom icon (the kind you get when you click on the 
icon in a file's "Get Info" window in Finder and paste a graphic there). But of 
course, if there is any chance that your files already have a custom icon 
because the user set one on it, your code would replace that icon, which isn't 
nice. But for a newly-downloaded file, you could probably do that. I think 
there might be a setIcon:forFile: (or something like that) method in 
NSFileManager or NSWorkspace for setting a custom icon on a file.

Cheers,
-- Uli Kusterer
"The Witnesses of TeachText are everywhere..."
http://groups.yahoo.com/group/mac-gui-dev/




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Re: Icon Overlay on Mac OSX

[Alfian Busyro]

Just like I thought, injecting code is not a good way to do this.
So, is it impossible to do this without injecting code to Finder ?

With Regards,

Alfian

On 12/07/18 15:18, Kyle Sluder wrote:

On Mon, Jul 9, 2012, at 02:34 PM, Alfian Busyro wrote:

I want to ask you guy's opinion about this issue.
And if some of you guys have an experience with it, please share it with
me.

As said before, there is no supported way to do this. You should not
attempt it. Discussion about methods of injecting code into the Finder,
etc. are off-topic for this list.

--Kyle Sluder



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Re: Icon Overlay on Mac OSX

[Charles Srstka]

On Jul 9, 2012, at 12:34 AM, Alfian Busyro wrote:

> I'm a newbie in Cocoa framework, XCode and also Obj-C.
> I'm still struggling to create an icon overlay in finder like the one in that 
> dropbox did.
> During my investigation about this I found that dropbox was using injection 
> method to the finder code using mach_star 
> (https://github.com/rentzsch/mach_star). you can find the discussion in here 
> : http://stackoverflow.com/questions/1294335/how-to-write-os-x-finder-plugin.
> but there's no exact example and how-to, that makes it very difficult to 
> implement.
> And also I found this discussion too, I don't know it's related or not :
> https://discussions.apple.com/thread/2536878?start=0&tstart=0.
> It also makes me confused, because I'm a newbie :D .
> 
> I want to ask you guy's opinion about this issue.
> And if some of you guys have an experience with it, please share it with me.

Please don’t do this kind of stuff. The use of code injection is one of the 
reasons I refuse to use Dropbox on OS X. It’s ugly, it’s fragile, and it’s 
prone to cause weird behavior and instability issues.

Charles

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Re: Icon Overlay on Mac OSX

[Kyle Sluder]

On Mon, Jul 9, 2012, at 02:34 PM, Alfian Busyro wrote:
> I want to ask you guy's opinion about this issue.
> And if some of you guys have an experience with it, please share it with
> me.

As said before, there is no supported way to do this. You should not
attempt it. Discussion about methods of injecting code into the Finder,
etc. are off-topic for this list.

--Kyle Sluder
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Re: Icon Overlay on Mac OSX

[Gideon King]

You might like to check out CTBadge - there are a couple of minor memory issues 
in the current release which will be picked up in Xcode's analyze function, but 
apart from that, it will probably point you in the right direction.

http://blog.oofn.net/2006/01/08/badging-for-everyone/


Regards

Gideon


On 09/07/2012, at 3:34 PM, Alfian Busyro  wrote:

> Hi,
> 
> I'm a newbie in Cocoa framework, XCode and also Obj-C.
> I'm still struggling to create an icon overlay in finder like the one in that 
> dropbox did.

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Icon Overlay on Mac OSX

[Alfian Busyro]

Hi,

I'm a newbie in Cocoa framework, XCode and also Obj-C.
I'm still struggling to create an icon overlay in finder like the one in 
that dropbox did.
During my investigation about this I found that dropbox was using 
injection method to the finder code using mach_star 
(https://github.com/rentzsch/mach_star). you can find the discussion in 
here : 
http://stackoverflow.com/questions/1294335/how-to-write-os-x-finder-plugin.
but there's no exact example and how-to, that makes it very difficult to 
implement.

And also I found this discussion too, I don't know it's related or not :
https://discussions.apple.com/thread/2536878?start=0&tstart=0.
It also makes me confused, because I'm a newbie :D .

I want to ask you guy's opinion about this issue.
And if some of you guys have an experience with it, please share it with me.

Thanks,

Best Regards,
Alfian
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