Re: Fw: Re: [Gimp-developer] What to do when zooming in? (bug #79384)

2002-04-24 Thread Raphaël Quinet

I got a reply from Miles O'Neal about my previous messsage.  Since he
cannot post to the list, here is his reply followed by my comments:

On Tue, 23 Apr 2002 11:34:01 -0500, Miles O'Neal [EMAIL PROTECTED] wrote:
 On Tue, 23 Apr 2002 15:41:08 +0200, Raphaël Quinet [EMAIL PROTECTED] wrote:
  I am not sure that I understand the point about the focus behavior.  The
  shortcut keys will only be received by the window that has the current
  focus.  What I was suggesting is that the GIMP checks explicitely if the
  coordinates of the mouse pointer are within the image window.  If it is
  in the image window (regardless of the focus model), then the GIMP would
  zoom towards that point.  If not, then the current zoom behavior would be
  used.
 
 I understand that.  My point is that with
 focus follows pointer, there is a very high
 probability that the cursor will be in the
 image window, but not where the user is looking.
 Yes, it *could* be elsewhere within the image
 panel, but since the image usually dominates
 the real estate, the most likely place for the
 cursor is inside the image window, itself.
 
 If you're mostly used to click to focus,
 this may not make sense unless you switch
 models (usually via your window manager) and
 play around.
 
 It's not a major disaster if zoom center
 defaults to cursor pointer - just an annoyance.
 If it annoys far less people than the current
 behavior, that's OK.  I have no idea what the
 percentage of users is that uses each type of
 focus.

I have always been a focus follows pointer user, so I am well aware of
what this means.  But I don't think that the choice of focus mode has a
significant influence on the zoom-in behavior.  While using the GIMP, I
usually move the mouse a lot because most operations (e.g., selections)
require the mouse.  So I usually know where the mouse pointer is and I
do not think that I would zoom in on the wrong area by accident.

Anyway, it looks like most developers do not care much about how the
zoom shortcuts behave (considering the low number of replies), so there
is no strong preference for one or the other solution.

-Raphaël
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Re: [Gimp-developer] Using Gimp

2002-04-24 Thread Tuomas Kuosmanen

On Tue, 2002-04-23 at 23:57, Russell St.Fleur wrote:
I created a plug-in for gimp and when given certain parameters add text
to the file.  I would like to know if there is a way for the plug-in to
work ie.. add the text to the file via the command line.

This plug-in is stored on a Server and being accessed by other client
machines.  I want them to be able to open a window access the server,
run the program without getting the dreaded Gtk-WARNING **: cannot open
display error. Just straight command line editing of an image and
outputing it to a format.

This is because Gimp needs an X display to work. Now, there is a way to
work around this, either just point it to some machine that gives it
access to the DISPLAY, or use the virtual framebuffer of the linux
kernel (if the machine runs linux) and run an framebuffer X server on
it.

But you probably dont want to do that, since ImageMagick suits your task
much better; see http://www.imagemagick.org/ - it is a poweful
commandline tool that can also add text to images. And it has C, C++,
Perl and Java API that you can use to write a small program or have it
as part of a larger one. And it does not depend on a $DISPLAY, it can
use truetype fonts directly from files.

I use that myself with my webcam script to add the date and time and
caption for example.

I hope this helps

Tuomas

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Re: [Gimp-developer] Using Gimp

2002-04-24 Thread Tino Schwarze

On Wed, Apr 24, 2002 at 12:55:15PM +0300, Tuomas Kuosmanen wrote:

 This plug-in is stored on a Server and being accessed by other client
 machines.  I want them to be able to open a window access the server,
 run the program without getting the dreaded Gtk-WARNING **: cannot open
 display error. Just straight command line editing of an image and
 outputing it to a format.
 
 This is because Gimp needs an X display to work. Now, there is a way to
 work around this, either just point it to some machine that gives it
 access to the DISPLAY, or use the virtual framebuffer of the linux
 kernel (if the machine runs linux) and run an framebuffer X server on
 it.

Hm. I suppose, Xvfb is the better choice here as there is no need to
actually see anything. It also does not need any graphics hardware.

Citing the man page:
  The  X  community  has found  many  other  novel uses for Xvfb,
  including testing clients against unusual depths and screen
  configurations, doing batch processing with Xvfb as a background
  rendering engine, load testing, as an aid to porting the X server to a
  new  platform,  and providing an unobtrusive way to run applications
  that don't really need an X server but insist on having one anyway.

Bye, Tino.

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Re: [Gimp-developer] Using Gimp

2002-04-24 Thread Sven Neumann

Hi,

[EMAIL PROTECTED] (Tino Schwarze) writes:

  This is because Gimp needs an X display to work. Now, there is a way to
  work around this, either just point it to some machine that gives it
  access to the DISPLAY, or use the virtual framebuffer of the linux
  kernel (if the machine runs linux) and run an framebuffer X server on
  it.
 
 Hm. I suppose, Xvfb is the better choice here as there is no need to
 actually see anything. It also does not need any graphics hardware.

or (if you are brave) try to use gimp-1.3 which doesn't need an X
display at all if started with the --no-interface command-line option.


Salut, Sven
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[Gimp-developer] Why is GIMP 1.3.x user interface much slower than 1.2.x?

2002-04-24 Thread Raphaël Quinet

This is something that has been bothering me for a while, and maybe I am
not the only one who has noticed this.  I have compiled the CVS HEAD
version and the 1.2.3 version on the same old machine (a Pentium 200)
and the CVS version is significantly slower than the 1.2.x version.  Of
course, there is a lot of debugging code in 1.3.x, but I am surprised
that the differences are so significant on that machine.

Some simple operations such as accessing the menus (both the pop-up menus
and the menus from the toolbox), refreshing the toolbox or refreshing the
contents of the docks take approximatively 5 to 6 times longer than with
the old 1.2.3 version.  The delays are significant enough to disturb the
normal flow of operations (at least for me).

Does anybody know what could be the source of these delays?  Is this due
to the GIMP itself (debugging code, new user interface) or is this due to
the fact that the CVS version uses GTK+ 2.0 instead of GTK+ 1.2.x?

-Raphaël
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[Gimp-developer] Re: What to do when zooming in? (bug #79384)

2002-04-24 Thread Guillermo S. Romero / Familia Romero

[EMAIL PROTECTED] (2002-04-24 at 1306.29 +0300):
 For the record, I would probably like zoom on pointer since then you
 can avoid the panning-after-zooming to find the place of the image. And

Yes, it would be great, place where you want, hit key and zoom
there. Saves the switch to zoom tool and back.

 that is how the zoom tool works too, doesnt it already zoom centered on
 where you click? I mean, I dont know since I never use it, being so used
 to the shortcuts.

It does, where you click becomes the centre of the window.

I think too that zoom should track mouse, or if mouse is out (sloppy
focus, ie, or over widgets around image) zoom based in centre.

GSR
 
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Re: [Gimp-developer] Why is GIMP 1.3.x user interface much slower than 1.2.x?

2002-04-24 Thread Sven Neumann

Hi,

RaphaXl Quinet [EMAIL PROTECTED] writes:

 This is something that has been bothering me for a while, and maybe I am
 not the only one who has noticed this.  I have compiled the CVS HEAD
 version and the 1.2.3 version on the same old machine (a Pentium 200)
 and the CVS version is significantly slower than the 1.2.x version.  Of
 course, there is a lot of debugging code in 1.3.x, but I am surprised
 that the differences are so significant on that machine.
 
 Some simple operations such as accessing the menus (both the pop-up menus
 and the menus from the toolbox), refreshing the toolbox or refreshing the
 contents of the docks take approximatively 5 to 6 times longer than with
 the old 1.2.3 version.  The delays are significant enough to disturb the
 normal flow of operations (at least for me).
 
 Does anybody know what could be the source of these delays?  Is this due
 to the GIMP itself (debugging code, new user interface) or is this due to
 the fact that the CVS version uses GTK+ 2.0 instead of GTK+ 1.2.x?

Hard to say. It's been said that GTK+-2.0 is substantially slower than
1.2. I don't notice much difference here but then my machine is
probably fast enough. Have you played with testgtk; do you notice the
same problems there?

Of course GIMP-1.3 has lots of room for improvement. One thing that is
on our TODO is to change GimpPreview so it can use GdkPixbuf directly.
We'd avoid the conversion to TempBuf and could use the (optionally 
hardware accelerated) pixbuf render routines.

Since we use a model-view concept in GIMP-1.3, we use a lot of signal
emissions to synchronize the UI with the core data structs. You could
get a noticeable speedup by compiling glib without debugging (default
since 2.0) and make sure that app/core/gimpmarshal.[ch] is generated
using a recent version of glib-genmarshal. Newer versions access the
GValues used in signal emissions directly instead of going thru
extensive type checks. Basically you should have some code like this
in app/core/gimpmarshal.c:

#ifdef G_ENABLE_DEBUG
#define g_marshal_value_peek_boolean(v)  g_value_get_boolean (v)
#else
#define g_marshal_value_peek_boolean(v)  (v)-data[0].v_int
#endif

For further optimizations we should do some profiling first since it
doesn't make sense to remove useful debugging code unless it shows up
significantly in the profile.


Salut, Sven
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Re: [Gimp-developer] Why is GIMP 1.3.x user interface much slower than 1.2.x?

2002-04-24 Thread Raphaël Quinet

On 24 Apr 2002 15:26:05 +0200, Sven Neumann [EMAIL PROTECTED] wrote:
 Raphaël Quinet [EMAIL PROTECTED] writes:
  Does anybody know what could be the source of these delays?  Is this due
  to the GIMP itself (debugging code, new user interface) or is this due to
  the fact that the CVS version uses GTK+ 2.0 instead of GTK+ 1.2.x?
 
 Hard to say. It's been said that GTK+-2.0 is substantially slower than
 1.2. I don't notice much difference here but then my machine is
 probably fast enough. Have you played with testgtk; do you notice the
 same problems there?

Yes, I have played with testgtk in both versions.  Unfortunately the
interface has changed so it is hard to compare the performance in both
cases.  The new one from GTK+ 2.0 is definitely slower, but it is
difficult to say if that would explain the difference seen in the GIMP.

Maybe I need to find an even slower computer than my PC at home, so
that I can compare how fast GTK+ 2.0 redraws its widgets compared to
1.2.x.

 Since we use a model-view concept in GIMP-1.3, we use a lot of signal
 emissions to synchronize the UI with the core data structs. You could
 get a noticeable speedup by compiling glib without debugging (default
 since 2.0) and make sure that app/core/gimpmarshal.[ch] is generated
 using a recent version of glib-genmarshal.

Yes, I also get glib and gtk+ from anonymous CVS (updated during the
week-end) so I should have the correct version.

 For further optimizations we should do some profiling first since it
 doesn't make sense to remove useful debugging code unless it shows up
 significantly in the profile.

Of course!  It is much too early to remove the debugging code from CVS
HEAD and it would be foolish to start optimizing anything before the
code is reasonably stable.  And, as you pointed out, no optimization
should be attempted before having a good profiling report.  I was not
trying to find a way to improve the speed of the current GIMP 1.3.x
(not yet, at least), but I was curious to know if anybody had an idea
about what was making it so slow.

-Raphaël
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Re: [Gimp-developer] Why is GIMP 1.3.x user interface much slower than 1.2.x?

2002-04-24 Thread Sven Neumann

Hi,

RaphaXl Quinet [EMAIL PROTECTED] writes:

 Yes, I have played with testgtk in both versions.  Unfortunately the
 interface has changed so it is hard to compare the performance in both
 cases.  The new one from GTK+ 2.0 is definitely slower, but it is
 difficult to say if that would explain the difference seen in the GIMP.
 
 Maybe I need to find an even slower computer than my PC at home, so
 that I can compare how fast GTK+ 2.0 redraws its widgets compared to
 1.2.x.

GTK+-2.0 draws its widgets double-buffered which definitely does not
make it faster (but reduces flickering). It might be interesting to 
disable this feature by undefining USE_BACKING_STORE in gdkwindow.c.

  Since we use a model-view concept in GIMP-1.3, we use a lot of signal
  emissions to synchronize the UI with the core data structs. You could
  get a noticeable speedup by compiling glib without debugging (default
  since 2.0) and make sure that app/core/gimpmarshal.[ch] is generated
  using a recent version of glib-genmarshal.
 
 Yes, I also get glib and gtk+ from anonymous CVS (updated during the
 week-end) so I should have the correct version.

gimpmarshal.[ch] might nevertheless not have been rebuilt since there's
no dependency to glib-genmarshal. You better have a look at the files
or touch gimpmarshal.list to force regeneration.


Salut, Sven
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Re: [Gimp-developer] action files in GIMP?

2002-04-24 Thread pcg

On Fri, Apr 19, 2002 at 10:34:19PM +0300, Tor Lillqvist [EMAIL PROTECTED] wrote:
   and Gtk is proven to be hard to port to that environment.
 ... but I still fear that porting gimp-perl might be quite a task.

Why? I apart from trivial changes (gimp-perl has to parse the output of
gimptool -n --install-admin-bin because gimptool doesn't have an option
to output the pluginpath and can't be edited under windows), it compiled
out of the box five minutes ago under windows 2000 using cygwin and the
binaries from www.gimp.org/win32 (which, as I read it, are not really
compatible with my environment anyways).

I think the remaining problems are highly trivial (e.g. possible reliance
on / instead of \, which mostly isn't a problem under windows anyways,
socket functions etc.)

It's just that this has to do somebody who knows windows better then me (I
lack the time  compiler to compile gimp c for windows just to test it).

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Re: [Gimp-developer] Tool Plug-In Changes

2002-04-24 Thread Nathan C Summers

On 23 Apr 2002, Michael Natterer wrote:

 Hi Rock,
 
 sorry I did not comment on this earlier, I was quite busy since
 returning from Guadec.

After a few weeks of silence, I figured that you didn't have anything 
more to say, so I started commiting again. I have my own schedule, too.
 
 As mentioned in an earlier mail from Sven,

Really I got the impression from that email that you were concerned mostly
about the few bugfixes that accidentally got overwritten.  The fact that
you didn't send me anything else for weeks later reinforced that.  
Resurrecting the bugfixes was fairly trivial, as was weeding out the few
remaining segfaults. They would have been in weeks earlier had you simply
asked for them.

 we are not at all happy with the introducion of plug-in tools and the
 ongoing exposure of the internal object structure outside the core.

I understand some of your objections. What I entirely do NOT understand is
why it has taken you so long to say anything concrete about my plans.  I
had heard some vague comments on irc, but nothing solid, and certainly
nothing I didn't think I had resolved long before now. There is absolutely
nothing you say here that you couldn't have said after looking at the
plans I gave with the patch and two emails I sent to the list on the 23rd
and 24 of Febuary, and very little of it couldn't have been said after
looking at the original RFC I posted on December 17 of last year.  After
getting no response to any of those messages, I assumed that there were no
objections.

I have spent all of my free time working on tool plugins from the time I
sent in the first RFC until the present date. Months have passed. I'm
pretty busy with school and work, so I haven't had much time to work on
it, but I've done practically nothing else with my free time. Yet I heard 
nothing from you before now, even when I solicited comments repeatedly.

Why do you think that your time is orders of magnitude more important than
mine?

 While I have no doubt that it's implementable in a nice and working
 way, I think it is the wrong way to go. Tools are an internal
 implementation detail that is closely related to ugly things like
 GdkEvents and fast response to user input.

I don't find the tool class to be particularly ugly, myself. It is
low-level, of course, but it seems to be pretty logical. GdkEvents have to
be dealt with by any plugin author. They're hardly obscure or ugly. It
would be nice if they were delivered in terms of image coordinates, of
course, but other than that, pretty much everything in the GdkEvent is
needed by the plugin. At the minimum, it needs to know location, pressure,
and which shift buttons are being pressed. Of course, for special cases it
doesn't need to know all of that, but for a general purpose api, that much
is needed. It would be very easy to change the code to use something other
than GdkEvents, certainly no harder than it was before.

We've discussed response time before. I expect that most people will load 
most tool plugins into the core most of the time. But it's nice to have a 
mode where a crashing plugin doesn't crash everything, and that is only 
possible if the plugin is in a different address space. Response time, of 
course, will suffer, but response time isn't everything, especially when 
debugging.

Thus people could try out plugins in a safe mode before trusting them, and 
developers could more easily do a compile-test-debug cycle without 
spending a lot of time restarting gimp. 

(Well, there is another way to shorten the edit-compile-debug cycle for
tools. We could implement checkpointing and restore the checkpoint on
SIGSEGV... But that would be a nightmare!)
 
 We should not add further tools, but drastically reduce their number
 by separating their ui from the core. 

I agree that better ui/logic separation is needed with the tools.  That 
gives me an idea...but that is for a different email.

 Then we make the factored out core code (their actual functionality)
 accessible via both the PDB and a module API. This is close to be
 finished for the paint tools. In the end, there will be *one* paint tool
 with a variety of paint_core implementations, each of them optionally
 featuring it's own tool options.
 
 The same holds true for the ImageMap tools, they will probably all
 collapse into one single tool which simply uses the image_map modules
 which are compiled in or loaded.

This is the first I've heard of any of these plans.  I knew you had 
factored out the PaintCore, but I didn't know about your idea of  
eventually unifying all of the paint tools into one descendant of the 
GimpTool class. It is almost impossible for the rest of us to make 
improvements to Gimp when you keep on making huge changes without telling 
the other developers about your plans. Please spend a bit of time sharing 
your plans with the rest of us -- after all, it's much less than what you 
expect from us.

 The tool itself is an ugly piece of code which is particularly 

Re: [Gimp-developer] SVG format

2002-04-24 Thread Branko Collin

On 24 Apr 2002, at 16:28, DENAT Christian DvSI/SIReS/GRE wrote:

 I'm currently looking for svg tools on win32 and look into the
 gimp.org site to see if gimp supports such vector format.
 
 It seems that the answer is no. 
 Please could you confirm this or at least could yout indicate me if
 there are some plans for such development ?

I have not heard of any such plans. 

Google turns up a set of tools to convert bitmap images through GIMP 
paths into SVG files for Sodipodi to work with: 
http://sjbrown.geeky.net/gimp2sodi/HOWTO.html

Same search: Raph Levien is planning on doing a full-fledged SVG 
implementation in the Gnome framework. I don't know how this 
(w|c)ould fit in with GIMP.

What exactly are you looking for: a plug-in vector editor (like 
gfig), perhaps with vector layers? Or a SVG loader, like the 
Postscript loader?

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Re: Fw: Re: [Gimp-developer] What to do when zooming in? (bug #79384)

2002-04-24 Thread Branko Collin

On 24 Apr 2002, at 10:41, Raphaël Quinet wrote:

 I got a reply from Miles O'Neal about my previous messsage.  Since he
 cannot post to the list, here is his reply followed by my comments:

 On Tue, 23 Apr 2002 11:34:01 -0500, Miles O'Neal [EMAIL PROTECTED]
 wrote:
 On Tue, 23 Apr 2002 15:41:08 +0200, Raphaël Quinet
 [EMAIL PROTECTED] wrote:
  I am not sure that I understand the point about
  the focus behavior.  The shortcut keys will only
  be received by the window that has the current
  focus.  What I was suggesting is that the GIMP
  checks explicitely if the coordinates of the mouse
  pointer are within the image window.  If it is in the
  image window (regardless of the focus model), then
  the GIMP would zoom towards that point.  If not,
  then the current zoom behavior would be used.

 I understand that.  My point is that with focus follows
 pointer, there is a very high probability that the cursor
 will be in the image window, but not where the user is
 looking.

 Yes, it *could* be elsewhere within the image panel, but
 since the image usually dominates the real estate, the
 most likely place for the cursor is inside the image window,
 itself. If you're mostly used to click to focus, this may
 not make sense unless you switch models (usually via
 your window manager) and play around.

 It's not a major disaster if zoom center defaults to cursor
 pointer - just an annoyance. If it annoys far less people than
 the current behavior, that's OK.  I have no idea what the
 percentage of users is that uses each type of focus.

The proposed keyboard shortcut _only_ zooms around the mouse pointer
because you want it to. Just like the paint brush paints because you
want it to. You would not use the short cut if you did not want to
zoom the area around the mouse pointer

I don't think the proposal tries to replace the existing zoom tools,
but add an extra one.

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[Gimp-developer] clone tool segfault.

2002-04-24 Thread David Odin

  Hi,

Currently in CVS HEAD, selecting the clone tool makes gimp segfault.
I don't understand all the issues, but this patch fix the segfault:
--- gimpclonetool.c 21 Apr 2002 07:30:53 -  1.90
+++ gimpclonetool.c 24 Apr 2002 19:44:42 -
@@ -172,13 +172,13 @@
   GIMP_CURSOR_MODIFIER_NONE   /* 
toggle_cursor_modifier */);


-  clone_core-init_callback  = gimp_clone_init_callback;
+/*  clone_core-init_callback  = gimp_clone_init_callback;
   clone_core-finish_callback= gimp_clone_finish_callback;
   clone_core-pretrace_callback  = gimp_clone_pretrace_callback;
   clone_core-posttrace_callback = gimp_clone_posttrace_callback;
-  clone_core-callback_data  = clone;
+  clone_core-callback_data  = clone;*/

-  paint_tool-core = GIMP_PAINT_CORE (clone_core);
+  paint_tool-core = g_object_new (GIMP_TYPE_CLONE, NULL);
 }

 static void
-

Can I commit, or is someone else working on this?

  Regards,
   
DindinX

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[Gimp-developer] Thank you

2002-04-24 Thread James D Strandboge

Dear Gimp developers,

The gimp is absolutely is one of my indispensable apps.  With it I have
been able to create cool graphics for web design and photo manipulation
for pictures of my family.  I sell people on checking out linux and
free/open source software by touting the power and usability of the
gimp.  It is a great, great program.

I appreciate all the hard work that has gone into making the gimp, and
just wanted to say 'Thank You.'

Jamie Strandboge

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[Gimp-developer] How many points can be drawn with one call to gimp-paintbrush?

2002-04-24 Thread Jeff Trefftzs

I'm working with L-Systems, using the GIMP as the image visualization engine, 
and doing the actual string rewriting, etc. in perl-fu.  My test images tend 
to get pretty complicated pretty fast - the one running now is interpreting 
88,940 symbols in the l-system.  While the number of lines that gets drawn 
isn't quite this large, we're still talking in terms of tens of thousands of 
calls to gimp_paintbrush.  At the moment I call gimp_paintbrush once for each 
line segment, as it gets processed from the command string (those 88,940 
symbols I mentioned earlier).  I was wondering if there might be a noticeable 
performance improvement if I were to accumulate a large number of line 
segments (saving their coordinates in an array), and making one call to 
gimp_paintbrush with some large number of line segments.   Is there a known 
upper limit to the number of end points that can go into the array passed to 
gimp_paintbrush?


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http://gug.sunsite.dk/gallery.php?artist=68 Gimp Gallery
http://trefftzs.topcities.com/home.html Photo galleries



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