Re: [Gimp-user] Gradient tool : how to modify the gradient ?

[Rick Strong]

"...if you can't duplicate something from the Gradient editor then go to the 
Gradients list and duplicate it from there."


No can do either way.

Rick S

-Original Message- 
From: Richard

Sent: Monday, December 19, 2016 8:15 PM
To: Mark Morin ; gimp-user-list@gnome.org
Subject: Re: [Gimp-user] Gradient tool : how to modify the gradient ?

Does it seem like this question comes up on a monthly basis?


GIMP could REALLY use some ability to make ad-hoc edits to its otherwise 
ready-only assets (gradients and brush dynamics, vector brushes, etc.). 
Requiring users to duplicate one of these before they're allowed to change 
any of those settings is one reason I dumped literally ALL of the preset 
brush dynamics from my GIMP installation.  And, I'd wager, it's probably one 
of many reasons why GIMP 2.8 moved 'brush size' out of the brush editor and 
into the tool options.



But -- (less rant, more on the topic, I agree) -- if you can't duplicate 
something from the Gradient editor then go to the Gradients list and 
duplicate it from there.



-- Stratadrake
strata_ran...@hotmail.com

Numbers may not lie, but neither do they tell the whole truth.



From: gimp-user-list  on behalf of Mark 
Morin 

Sent: Sunday, December 18, 2016 3:17 PM
To: gimp-user-list@gnome.org
Subject: Re: [Gimp-user] Gradient tool : how to modify the gradient ?

right click on the gradient you want to copy

select "duplicate gradient"

an editable copy of that gradient will open.



On 12/18/2016 5:49 PM, Rick Strong wrote:

WIN 7 64 bit;  V. 2.8.16
I can't find any way to save the non-writable gradient to a copy that
I can edit. I've got the "Edit Gradient" tab up, and can see the
gradient, but there is no button/option to "save-as". There is a
"save" button, but that only saves that same gradient.

I must be missing something.

Rick S.

-Original Message- From: PierUgo
Sent: Sunday, December 18, 2016 1:27 PM
To: gimp-user-list@gnome.org
Subject: Re: [Gimp-user] Gradient tool : how to modify the gradient ?

Le 18/12/2016 à 14:25, rich2005 a écrit :

Hi,

I'm trying to use the gradient tool, but I would like to modify the
gradient law. I guess that the modification takes place here :
http://prntscr.com/dkv3rp

[http://image.prntscr.com/image/9f4724d7f8644df3a70a2f314debd2d8.png]

Screenshot
prntscr.com
Captured with Lightshot



but I can't do any modification.

When hovering the black and white triangle it says "click : select;
drag
: move.." etc, but these triangles don't react to any mouse action.

I have the same issue either on macOS or on Windows, so I probably
miss
something in the Gimp usage itself.

Gimp 2.18

Any help appreciated


The standard Gimp gradients are normally marked as non-writable so
you can not
edit them , see:

Edit -> Preferences -> Folders -> Gradients

Best leave it that way and duplicate the gradient you want to edit.
That saves
to your Gimp profile.

example attached.

rich: www.gimp-forum.net

Gimp-Forum.net
www.gimp-forum.net
Board Statistics: Our members have made a total of 630 posts in 118 threads. 
We currently have 52 members registered. Please welcome our newest member, 
strifemit





Attachments:
*
http://www.gimpusers.com/system/attachments/369/original/edit-gradient.jpg



That solved my problem, thanks.


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[http://www.gimpusers.com/system/attachments/369/original/edit-gradient.jpg]

Re: [Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[mark_at_yahoo via gimp-user-list]

On 12/19/2016 08:14 AM, Steve Kinney wrote:

To duplicate this behavior, use the tear off menu function on Linux.
That's it:  As far as I know, it's the same with all distros and window
managers:  I have seen it on Ubuntu and Mint (both Debian based) and
under Gnome, Cinnamon and XFCE4.  I think it's a GTK+ thing but don't
quote me on that.

Work-around:  Left click the menu item on the torn-off menu to select
it, then press the space bar on your keyboard to "make it work."
Thanks for the work-around! That makes it clumsily, marginally better 
than going through two-level pulldowns, usable.


So this is a longstanding bug? I vaguely remember doing it 
sans-workaround "way back when" == unknown version. It was an important 
part of my workflow. Getting more convinced that nobody uses this part 
of the UI anymore. I wonder if it's worth filing on Bugzilla or if it'll 
be a "will not fix", especially if it falls in the cracks between GIMP 
and gtk (can't even find GTK+ or generic "gtk" in the Bugzilla product 
list, just specific sub-projects).


Thanks again for the quick and helpful reply. The gimp-user-list: Still 
coming through with mission-critical information after all these years!




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[Gimp-user] Keep Aspect not working

[rich2005]

>i have an image sized 650x1000.
>if i go to  image > scale image and lock the chain to Keep Aspect and
>resize width to 655, the height is adjusted to 1008 - 3 px more - why?

Gimp works in pixels, and whole numbers, there is a round up/round down
involved.

1000 / 650 is a ratio of 1.53846.. multiply that by 655 and you get 1007.6923
which rounds up to 1008.

What is wrong with that or do you require an image 655 x 1000 pix, in which case
you probably need to resize the canvas rather than scale the image. If you do
want to scale to 655 x 1000 pix then ***break*** the link between width and
height.

Even better, start again using the correct values.

rich: www.gimp-forum.net

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Re: [Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[mark_at_yahoo via gimp-user-list]

On 12/19/2016 09:04 AM, mark_at_yahoo via gimp-user-list wrote:

So this is a longstanding bug? I vaguely remember doing it
sans-workaround "way back when" == unknown version.


Late-breaking news: I went into my personal, "posts I found interesting 
enough to save" archives of this list and found a 2004 notice about 
removing tear-off menu configuration from the preferences dialog. I had 
already looked there in 2.8 and there was nothing.


I just now experimented and found that adding "(tearoff-menus no)" to my 
~/.gimp-2.8/gimprc *does* turn them off; the "--" line at the top of 
the secondary menu no longer appears. Setting it back to "yes" 
re-enables them, as of course does leaving out the tag completely. The 
tag isn't in any of the system-wide configuration files 
(/usr/share/gimp/2.0/themes/*/gtkrc on my distro) so I'm guessing the 
compiled-in default is "yes".


So it's still in the codebase, just probably dusty and untouched for 10+ 
years.


Sorry for the spam -- likely nobody's interested in any of this -- but 
thanks again to Steve for helping me out.



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[Gimp-user] can't keep proportions

[programmer_ceds]

>hello, i'm making an image which needs to have a certain width and
>length. problem is that when i use the tool Filters > Decor > Border
>and add the same exact number of px the Y and X columns, the image
>does not maintain proportions with the border added. why?it should add
>the same exact amount of pixels to the x and to y and keep proportions
>but it doesn't.  thanks.

If you add the same number of pixels to both the width and the height the aspect
ratio will change UNLESS the image is square (height = width) - this is a simple
consequence of basic arithmetic.

If you want the aspect ratio to be unaltered you will need to add more pixels on
the shortest sides of the image than you do on the longest sides - how may more
being determined by the aspect ratio of the original image.

For example if the image was 400 x 200 pixels adding a 10 pixel border to all
sides would give 420 x 220 - which alters the aspect ratio. Adding 10 pixels
each side and 5 pixels top and bottom gives 420 x 210 which preserves the aspect
ratio.

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[Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[programmer_ceds]

>After 13+ years I let my subscription to gimp-user-list lapse due to 
>excessive bounces (don't know why that was happening). I wasn't 
>following it too much anymore. So of course a month later I have to do
>some Gimping, run into problems, and need to re-subscribe. Teaches me
>a
>lesson. ;)
>
>The "arrow.scm" plugin at http://registry.gimp.org/node/20269 doesn't 
>work under 2.8.16 -- setting the stroke width has no effect (and it 
>doesn't use the global brush width, either). I hacked up a fix: It
>looks
>like gimp-context-set-brush-size is now required instead of or in 
>addition to gimp-brush-set-radius. The script hasn't been touched
>since
>2009, and the last comment on the web page is 2013. What's the
>protocol
>for submitting a patch, or should I just keep a working copy for
>myself?
>
>Problem #2: Tear-off menus (2.8.16 again) don't work, at least in my 
>environment (Linux, X11, FVWM window manager). For example, 
>right-click-and-hold in an image window, move down to "Colors >", move
>across to the submenu and down to "Invert" and release -- that works. 
>But right-click-and-hold, move down to "Colors >", move across to the 
>top "-" line and release to create a tear-off menu. Then in that
>new
>"Colors" menu/window, click on "Invert" and nothing happens.
>(Actually,
>something does -- the message area in the lower right corner of the 
>image window changes to say "Invert the colors", but the image doesn't
>change.) Same (no)thing with menu items that should pop up a dialog 
>window, like "Levels...". But doing a deeper submenu from the tear-off
>menu, like "Map >" and then "Alien map..." from there does work.
>
>I couldn't find this on Bugzilla. Can anyone else recreate it? I'm 
>guessing it hasn't shown up because everyone's on Windows or some
>fancy
>Linux "desktop environment" and/or does the thing where you dock all
>the
>menus/windows/dialogs into the main image window (I don't know how to
>do
>that, nor why I'd want to).
>
>Thanks for any suggestions. Also for keeping gimp-user-list alive.
>Were
>there lots of posts about changing "File -> Save As..." back to allow 
>saving to JPEG/PNG/etc in addition to XCF instead of having to use
>"File
>-> Export" while I was gone? ;)

I have made a number of changes to this script over the years, the most recent,
in 2014, being to allow curved arrows. I added an entry to the registry with a
note to say that I couldn't upload the script but posted a link to it instead.
There were a number of other changes that I had made to the script before that
but I'm not sure whether or not they address the brush issue that you have.
perhaps you could try my version of the script. If necessary we could amalgamate
the changes to get a script that corrects a number of issues with the original
script, draws curved arrows and solves your problem.

I don't know of a site that hosts GIMP scripts whilst the registry is
unavailable but I am happy to replace the zip file on my site with an updated
one for the time being.

The latest version of the script:

http://www.programmer97.talktalk.net/Files/arrow.zip

The GIMP registry page for the version of the script that includes curved
arrows:

http://registry.gimp.org/node/28566

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[Gimp-user] Keep Aspect not working

[Mattia]

i have an image sized 650x1000.
if i go to  image > scale image and lock the chain to Keep Aspect and resize
width to 655, the height is adjusted to 1008 - 3 px more - why?

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[Gimp-user] can't keep proportions

[rich2005]

>hello, i'm making an image which needs to have a certain width and
>length. problem is that when i use the tool Filters > Decor > Border
>and add the same exact number of px the Y and X columns, the image
>does not maintain proportions with the border added. why?it should add
>the same exact amount of pixels to the x and to y and keep proportions
>but it doesn't.  thanks.

If you need the border inside the canvas then

Select -> All   ctrl-A

Edit -> Stroke Selection with the width twice the required border size.

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Re: [Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[mark_at_yahoo via gimp-user-list]

On 12/19/2016 03:01 AM, programmer_ceds wrote:

I have made a number of changes to this script over the years, the most recent,
in 2014, being to allow curved arrows. I added an entry to the registry with a
note to say that I couldn't upload the script but posted a link to it instead.
There were a number of other changes that I had made to the script before that
but I'm not sure whether or not they address the brush issue that you have.
perhaps you could try my version of the script. If necessary we could amalgamate
the changes to get a script that corrects a number of issues with the original
script, draws curved arrows and solves your problem.

I don't know of a site that hosts GIMP scripts whilst the registry is
unavailable but I am happy to replace the zip file on my site with an updated
one for the time being.

The latest version of the script:

http://www.programmer97.talktalk.net/Files/arrow.zip

The GIMP registry page for the version of the script that includes curved
arrows:

http://registry.gimp.org/node/28566



Thanks, programmer_ceds. Yes, I saw your page on the registry but 
didn't follow the link to the actual script. My bad.


(BTW, I got your post to the list hours after my previous replies. This 
had been happening for the last year or two I was on the list -- I'd get 
posts out of order, and delayed up to a day or more. Maybe it's related 
to why the mailman server was getting bounces from me and kicked me off 
the list.)


I just now tried your script and it works. Looking at the code, you did 
change gimp-brush-set-radius to gimp-context-set-brush-size (which is 
the only thing I did), plus of course much more to support curves. Nice 
work, all of it.


I think I saw one small problem in that if the path has more than two 
points and "double headed arrows" is turned on the script uses the 
path's first and second points instead of first and last like the popup 
warning says (nice touch having the popup). And if you're in the mood 
for coding I'd suggest adding another toggle to change between absolute 
and relative values instead of using negative numbers for relative as 
per the original script. But it's not that important.


If the registry ever gets working again I think yours should replace the 
original because it's a complete superset of the that one's 
functionality. Thanks again for your work.


--
MARK
markr...@yahoo.com
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Re: [Gimp-user] can't keep proportions

[Jay Smith]

Mattia,

You said:


also, it's not clear to me why 400 x 200 and 420 x 220 is not keeping
aspect ratio? the vertical increases exactly the same amount of the
horizontal


It sounds to me like the problem is that you are confusing "same amount" 
with "same proportion".  They are _not_ the same thing.


Increasing 200 to 220 is a proportional increase of 10%.

If you increase 400 by 10%, that becomes 440, _not_ 420!

Jay


On 12/19/2016 03:18 PM, Mattia wrote:

thank you for the help, much appreciated.
this will cause the border to look uneven however, isn't there a work around to
this?
also, it's not clear to me why 400 x 200 and 420 x 220 is not keeping aspect
ratio? the vertical increases exactly the same amount of the horizontal


If you add the same number of pixels to both the width and the height
the aspect ratio will change UNLESS the image is square (height =
width) - this is a simple consequence of basic arithmetic.

If you want the aspect ratio to be unaltered you will need to add more
pixels on the shortest sides of the image than you do on the longest
sides - how may more being determined by the aspect ratio of the
original image.

For example if the image was 400 x 200 pixels adding a 10 pixel border
to all sides would give 420 x 220 - which alters the aspect ratio.
Adding 10 pixels each side and 5 pixels top and bottom gives 420 x 210
which preserves the aspect ratio.




--
Jay Smith

e-mail: j...@jaysmith.com  mailto:j...@jaysmith.com
website: http://www.JaySmith.com

Jay Smith & Associates
P.O. Box 650
Snow Camp, NC  27349  USA

Phone: Int+US+336-376-9991
Toll-Free Phone in US & Canada:
1-800-447-8267
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[Gimp-user] Bug in "arrow" plugin, possible bug with tear-off menus

[programmer_ceds]

>Thanks, programmer_ceds. Yes, I saw your page on the registry but 
>didn't follow the link to the actual script. My bad.
>
>(BTW, I got your post to the list hours after my previous replies.
>This
>had been happening for the last year or two I was on the list -- I'd
>get
>posts out of order, and delayed up to a day or more. Maybe it's
>related
>to why the mailman server was getting bounces from me and kicked me
>off
>the list.)
>
>I just now tried your script and it works. Looking at the code, you
>did
>change gimp-brush-set-radius to gimp-context-set-brush-size (which is 
>the only thing I did), plus of course much more to support curves.
>Nice
>work, all of it.
>
>I think I saw one small problem in that if the path has more than two 
>points and "double headed arrows" is turned on the script uses the 
>path's first and second points instead of first and last like the
>popup
>warning says (nice touch having the popup). And if you're in the mood 
>for coding I'd suggest adding another toggle to change between
>absolute
>and relative values instead of using negative numbers for relative as 
>per the original script. But it's not that important.
>
>If the registry ever gets working again I think yours should replace
>the
>original because it's a complete superset of the that one's 
>functionality. Thanks again for your work.

The script was really only intended to work with a path of 2 points only but I
will look at modifying it to place the second arrow at the final point of the
curve.

Having just checked, there is also an issue if a single arrow head is drawn
based on the last point of a path with more than two points - the centre of the
arrow doesn't lie along the final segment of the path. The easy approach would
be to only allow the script to work on paths with two points but I'll think
about it.

Regarding the relative/absolute values - there are two of the controls where
this would have to be done if they are to operate independently and give the
greatest flexibility. Again I'll think about this.

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[Gimp-user] can't keep proportions

[programmer_ceds]

>also, it's not clear to me why 400 x 200 and 420 x 220 is not keeping
>aspect ratio? the vertical increases exactly the same amount of the
>horizontal

To put it slightly differently you can think of the aspect ratio as being the
width divided by the height.

400/200 = 2.0

420/220 = 1.90909 (approximately)

so the aspect ratios are not the same.

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[Gimp-user] can't keep proportions

[rich2005]

>i think when adding the border the canvas also expands to contain it,
>no?
>the border is inside the canvas then, right?

Canvas size remains the same, border is inside the canvas.

You are stroking a selection, the width of the stroke is half inside the canvas,
hence the need to double the required size.

rich: www.gimp-forum.net

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[Gimp-user] can't keep proportions

[Mattia]

thank you for the help, much appreciated.
this will cause the border to look uneven however, isn't there a work around to
this?
also, it's not clear to me why 400 x 200 and 420 x 220 is not keeping aspect
ratio? the vertical increases exactly the same amount of the horizontal

>If you add the same number of pixels to both the width and the height
>the aspect ratio will change UNLESS the image is square (height =
>width) - this is a simple consequence of basic arithmetic.
>
>If you want the aspect ratio to be unaltered you will need to add more
>pixels on the shortest sides of the image than you do on the longest
>sides - how may more being determined by the aspect ratio of the
>original image.
>
>For example if the image was 400 x 200 pixels adding a 10 pixel border
>to all sides would give 420 x 220 - which alters the aspect ratio.
>Adding 10 pixels each side and 5 pixels top and bottom gives 420 x 210
>which preserves the aspect ratio.

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[Gimp-user] can't keep proportions

[Mattia]

i think when adding the border the canvas also expands to contain it, no?
the border is inside the canvas then, right?

>If you need the border inside the canvas then
>
>Select -> All   ctrl-A
>
>Edit -> Stroke Selection with the width twice the required border
>size.

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[Gimp-user] can't keep proportions

[Mattia]

hello, i'm making an image which needs to have a certain width and length.
problem is that when i use the tool Filters > Decor > Border and add the same
exact number of px the Y and X columns, the image does not maintain proportions
with the border added. why?it should add the same exact amount of pixels to the
x and to y and keep proportions but it doesn't.  thanks.

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[Gimp-user] Curve blend from path

[leunam]

Hi Gimp users, I'd like to know if there is a (simple) way to load the curves
for the curve blend filter from a path. Background: I'd like to create a special
kind of little planet projection for which I need to distort the base image in a
way that allows me to define the horizon by a path. If the curve blend filter is
not your first choice, any other ideas are welcome. Thanks a lot in advance!

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Re: [Gimp-user] Gradient tool : how to modify the gradient ?

[Richard]

Does it seem like this question comes up on a monthly basis?


GIMP could REALLY use some ability to make ad-hoc edits to its otherwise 
ready-only assets (gradients and brush dynamics, vector brushes, etc.).  
Requiring users to duplicate one of these before they're allowed to change any 
of those settings is one reason I dumped literally ALL of the preset brush 
dynamics from my GIMP installation.  And, I'd wager, it's probably one of many 
reasons why GIMP 2.8 moved 'brush size' out of the brush editor and into the 
tool options.


But -- (less rant, more on the topic, I agree) -- if you can't duplicate 
something from the Gradient editor then go to the Gradients list and duplicate 
it from there.


-- Stratadrake
strata_ran...@hotmail.com

Numbers may not lie, but neither do they tell the whole truth.



From: gimp-user-list  on behalf of Mark Morin 

Sent: Sunday, December 18, 2016 3:17 PM
To: gimp-user-list@gnome.org
Subject: Re: [Gimp-user] Gradient tool : how to modify the gradient ?

right click on the gradient you want to copy

select "duplicate gradient"

an editable copy of that gradient will open.



On 12/18/2016 5:49 PM, Rick Strong wrote:
> WIN 7 64 bit;  V. 2.8.16
> I can't find any way to save the non-writable gradient to a copy that
> I can edit. I've got the "Edit Gradient" tab up, and can see the
> gradient, but there is no button/option to "save-as". There is a
> "save" button, but that only saves that same gradient.
>
> I must be missing something.
>
> Rick S.
>
> -Original Message- From: PierUgo
> Sent: Sunday, December 18, 2016 1:27 PM
> To: gimp-user-list@gnome.org
> Subject: Re: [Gimp-user] Gradient tool : how to modify the gradient ?
>
> Le 18/12/2016 à 14:25, rich2005 a écrit :
>>> Hi,
>>>
>>> I'm trying to use the gradient tool, but I would like to modify the
>>> gradient law. I guess that the modification takes place here :
>>> http://prntscr.com/dkv3rp
[http://image.prntscr.com/image/9f4724d7f8644df3a70a2f314debd2d8.png]

Screenshot
prntscr.com
Captured with Lightshot


>>> but I can't do any modification.
>>>
>>> When hovering the black and white triangle it says "click : select;
>>> drag
>>> : move.." etc, but these triangles don't react to any mouse action.
>>>
>>> I have the same issue either on macOS or on Windows, so I probably
>>> miss
>>> something in the Gimp usage itself.
>>>
>>> Gimp 2.18
>>>
>>> Any help appreciated
>>
>> The standard Gimp gradients are normally marked as non-writable so
>> you can not
>> edit them , see:
>>
>> Edit -> Preferences -> Folders -> Gradients
>>
>> Best leave it that way and duplicate the gradient you want to edit.
>> That saves
>> to your Gimp profile.
>>
>> example attached.
>>
>> rich: www.gimp-forum.net
Gimp-Forum.net
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>>
>> Attachments:
>> *
>> http://www.gimpusers.com/system/attachments/369/original/edit-gradient.jpg
>>
>
> That solved my problem, thanks.
>
>
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