1. 22 Nov, 2018 3 commits
    • Jehan's avatar
      app: make sure we reset tool modifier state before saving options. · dd3d9ab3
      Jehan authored
      I had this funny behavior when I was quitting GIMP with the active tool
      using modifiers (for instance bucket fill). Each time I'd quit with
      ctrl-q (and if the image is not dirty), the options would use the value
      from the modifier state and be saved as-is. Hence at next restart, the
      default value was always different!
      dd3d9ab3
    • Jehan's avatar
      app: properly (bucket) fill created splines and segments in line art. · 5a4754f3
      Jehan authored
      For this, I needed distmap of the closed version of the line art (after
      splines and segments are created). This will result in invisible stroke
      borders added when flooding in the end. These invisible borders will
      have a thickness of 0.0, which means that flooding will stop at once
      after these single pixels are filled, which makes it quick, and is
      perfect since created splines and segments are 1-pixel thick anyway.
      Only downside is having to run "gegl:distance-transform" a second time,
      but this still stays fast.
      5a4754f3
    • Jehan's avatar
      app: replace gegl:watershed-transform with custom algorithm. · 3467acf0
      Jehan authored
      We don't really need to flow every line art pixel and this new
      implementation is simpler (because we don't actually need over-featured
      watershedding), and a lot lot faster, making the line art bucket fill
      now very reactive.
      For this, I am keeping the computed distance map, as well as local
      thickness map around to be used when flooding the line art pixels
      (basically I try to flood half the stroke thickness).
      
      Note that there are still some issues with this new implementation as it
      doesn't properly flood yet created (i.e. invisible) splines and
      segments, and in particular the ones between 2 colored sections. I am
      going to fix this next.
      3467acf0
  2. 21 Nov, 2018 1 commit
  3. 20 Nov, 2018 2 commits
    • Jehan's avatar
      app: fix a line art leak in bucket fill tool. · 36c885a6
      Jehan authored
      Introduced in commit b4e12fbb:
      gimp_pickable_contiguous_region_prepare_line_art_async() was running
      gimp_pickable_flush(), which provokes the "rendered" signal on the
      image projection when a change occured. As a result, it was calling
      gimp_bucket_fill_compute_line_art() within itself and since
      tool->priv->async was not set yet, none of the call were canceled. Hence
      the same line art is computed twice, but one is leaked.
      Make sure we block this signal handler as a solution.
      36c885a6
    • Jehan's avatar
      app: priority map now unneeded for gegl:watershed-transform. · 963eef82
      Jehan authored
      This commit is based on GEGL master as I just made the auxiliary buffer
      of gegl:watershed-transform optional for basic cases.
      It doesn't necessarily makes the whole operation that much faster
      according to my tests, but it makes the code simpler as creating this
      priority map was quite unnecessary.
      963eef82
  4. 19 Nov, 2018 10 commits
    • Ell's avatar
      libgimpbase, libgimp, app: pass misc. GEGL config to plug-ins · c288b28a
      Ell authored
      Pass the GEGL tile-cache size, swap path, and thread-count to plug-
      ins as part of their config, and have libgimp set the plug-in's
      GeglConfig accordingly upon initialization.
      c288b28a
    • Ell's avatar
      app: add gimp_pickable_contiguous_region_prepare_line_art_async() ... · b4e12fbb
      Ell authored
      ... and use in bucket-fill tool
      
      Add gimp_pickable_contiguous_region_prepare_line_art_async(), which
      computes a line-art asynchronously, and use it in the bucket-fill
      tool, instead of having the tool create the async op.
      
      This allows the async to keep running even after the pickable dies,
      since we only need the pickable's buffer, and not the pickable
      itself.  Previously, we reffed the pickable for the duration of the
      async, but we could still segfault when unreffing it, if the
      pickable was a drawable, and its parent image had already died.
      
      Furthermore, let the async work on a copy of the pickable's buffer,
      rather than the pickable's buffer directly.  This avoids some race
      conditions when the pickable is the image (i.e., when "sample
      merged" is active), since then we're using image projection's
      buffer, which is generally unsafe to use in different threads
      concurrently.
      
      Also, s/! has_alpha/has_alpha/ when looking for transparent pixels,
      and quit early, at least during this stage, if the async in
      canceled.
      b4e12fbb
    • Ell's avatar
      app: in bucket-fill tool, cancel async on tool destruction · 663a6c70
      Ell authored
      When computing line-art, don't ref the bucket-fill tool in the
      async data, and rather cancel any ongoing async upon tool
      destruction, so that the async callback doesn't attept to touch the
      now-dead tool.  This avoids segfaulting in the async callback when
      switching to a different tool, while a line-art async operation is
      active.
      
      Additionally, always cancel any previous async operation in
      gimp_bucket_fill_compute_line_art(), even if not starting a new
      one.
      663a6c70
    • Ell's avatar
      app: in gimp-parallel, boost priority of waited-upon asyncs · 62baffed
      Ell authored
      When an async that was created through
      gimp_parallel_run_async[_full](), and whose execution is still
      pending, is being waited-upon, maximize its priority so that it
      gets executed before all other pending asyncs.
      
      Note that we deliberately don't simply execute the async in the
      calling thread in this case, to allow timed-waits to fail (which is
      especially important for gimp_wait()).
      62baffed
    • Ell's avatar
      app: add GimpAsync::waiting signal · 965da12b
      Ell authored
      ... which is emitted when the async is being waited-upon, blocking
      execution.
      965da12b
    • Ell's avatar
      app: in bucket-fill tool, fix potential leak when computing line-art · 2e45c4c8
      Ell authored
      In the line-art async function, pass ownership over the resulting
      buffer to the async object, so that the buffer is properly freed in
      case the async in canceled after line-art computation is complete,
      but before the completion callback is called.
      
      Also, clear the tool's async pointer in the completion callback, to
      avoid leaking the last issued async.
      2e45c4c8
    • Ell's avatar
      app: in the bucket-fill tool, avoid CRITICALs when computing line-art ... · 4575949c
      Ell authored
      ... when the current image/drawable are NULL.
      4575949c
    • Jehan's avatar
    • Jehan's avatar
      app: better handle drawable and image update for line art computation. · 04726533
      Jehan authored
      The "update" signal on drawable or projection can actually be emitted
      many times for a single painting event. Just add new signals ("painted"
      on GimpDrawable and "rendered" on GimpProjection) which are emitted once
      for a single update (from user point of view), at the end, after actual
      rendering is done (i.e. after the various "update" signals).
      
      Also better support the sample merge vs current drawable paths for
      bucket fill.
      04726533
    • Jehan's avatar
      app: remove now useless erosion size option. · 3f58a385
      Jehan authored
      Since commit b00037b8, erosion size is not used anymore, as this step
      has been removed, and the end point detection now uses local thickness
      of strokes instead.
      3f58a385
  5. 18 Nov, 2018 1 commit
    • Michael Natterer's avatar
      Issue #2224 - Use the "Swap folder" setting for the GEGL cache · a29f73bd
      Michael Natterer authored
      Move swap/cache and temporary files out the GIMP user config dir:
      
      libgimpbase: add gimp_cache_directory() and gimp_temp_directory()
      which return the new default values inside XDG_CACHE_HOME and the
      system temp directory. Like all directories from gimpenv.[ch] the
      values can be overridden by environment variables. Improve API docs
      for all functions returning directories.
      
      Add new config file substitutions ${gimp_cache_dir} and
      ${gimp_temp_dir}.
      
      Document all the new stuff in the gimp and gimprc manpages.
      
      app: default "swap-path" and "temp-path" to the new config file
      substitutions. On startup and config changes, make sure that the swap
      and temp directories actually exist.
      
      In the preferences dialog, add reset buttons to all file path pages.
      a29f73bd
  6. 16 Nov, 2018 2 commits
    • Jehan's avatar
      app: improve end point detection for smart colorization. · b00037b8
      Jehan authored
      Previous algorithm was relying on strokes of small radius to detect
      points of interest. In order to work with various sizes of strokes, we
      were computing an approximate median stroke thickness, then using this
      median value to erode the binary line art.
      
      Unfortunately this was not working that well for very fat strokes, and
      also it was potentially opening holes in the line art. These holes were
      usually filled back later during the spline and segment creations. Yet
      it could not be totally assured, and we had some experience where color
      filling would leak out of line art zones without any holes from the
      start (which is the opposite of where this new feature is supposed to
      go)!
      
      This updated code computes instead some radius estimate for every border
      point of strokes, and the detection of end points uses this information
      of local thickness. Using local approximation is obviously much more
      accurate than a single thickness approximation for the whole drawing,
      while not making the processing slower (in particular since we got rid
      of the quite expensive erosion step).
      This fixes the aforementionned issues (i.e. work better with fat strokes
      and do not create invisible holes in closed lines), and also is not
      subject to the problem of mistakenly increasing median radius when you
      color fill in sample merge mode (i.e. using also the color data in the
      input)!
      Also it is algorithmically less intensive, which is obviously very good.
      
      This new version of the algorithm is a reimplementation in GIMP of new
      code by Sébastien Fourey and David Tschumperlé, as a result of our many
      discussions and tests with the previous algorithm.
      
      Note that we had various tests, experiments and propositions to try and
      improve these issues. Skeletonization was evoked, but would have been
      most likely much slower. Simpler erosion based solely on local radius
      was also a possibility but it may have created too much noise (skeleton
      barbs), with high curvature, hence may have created too many new
      artificial endpoints.
      This new version also creates more endpoints though (and does not seem
      to lose any previously detected endpoints), which may be a bit annoying
      yet acceptable with the new bucket fill stroking interaction. In any
      case, on simple examples, it seems to do the job quite well.
      b00037b8
    • Jehan's avatar
      app: force the image flush after a selection fill. · 287d90ba
      Jehan authored
      Other bucket fills are now done as filter until committed, but basic
      selection fill is still done automatically. So let's make sure the
      canvas is updated immediately (as it used to be before my changes).
      287d90ba
  7. 15 Nov, 2018 3 commits
  8. 14 Nov, 2018 18 commits
    • Ell's avatar
      app: more gimp-parallel fixes · 05a4437d
      Ell authored
      Fix indentation in gimp-parallel.{cc,h}.
      
      Remove unused typedefs in gimp-parallel.h.
      
      s/Gimp/Gegl/ in function-type cast in gimphistogram.c.
      05a4437d
    • Ell's avatar
      app: indentation fix in gimp-parallel.cc · 115fc174
      Ell authored
      115fc174
    • Ell's avatar
      app: remove gimp_parallel_distribute(); use gegl_parallel_distribute() · 2736cee5
      Ell authored
      The parallel_distribute() family of functions has been migrated to
      GEGL.  Remove the gimp_parallel_distribute() functions from
      gimp-parallel, and replace all uses of these functions with the
      corresponding gegl_parallel_distrubte() functions.
      2736cee5
    • Ell's avatar
      configure.ac: require GEGL >= 0.4.13 · 43e3939d
      Ell authored
      43e3939d
    • Jehan's avatar
      969143c4
    • Jehan's avatar
      app: edit the bucket fill tool options with new line art options. · 824af124
      Jehan authored
      I have not added all the options for this new tool yet, but this sets
      the base. I also added a bit of TODO for several places where we need to
      make it settable, in particular the fuzzy select tool, but also simply
      PDB calls (this will need to be a PDB context settings.
      
      Maybe also I will want to make some LineArtOptions struct in order not
      to have infinite list of parameters to functions. And at some point, it
      may also be worth splitting a bit process with other type of
      selection/fill (since they barely share any settings anyway).
      
      Finally I take the opportunity to document a little more the parameters
      to gimp_lineart_close(), which can still be improved later (I should
      have documented these straight away when I re-implemented this all from
      G'Mic code, as I am a bit fuzzy on some details now and will need to
      re-understand code).
      824af124
    • Jehan's avatar
      app: bucket fill tool with a "paint-style" interaction. · e1c40506
      Jehan authored
      Rather than just having a click interaction, let's allow to "paint" with
      the bucket fill. This is very useful for the new "line art" colorization
      since it tends to over-segment the drawing. Therefore being able to
      stroke through the canvas (rather than click, up, move, click, etc.)
      makes the process much simpler. This is also faster since we don't have
      to recompute the line art while a filling is in-progress.
      Note that this new behavior is not only for the line art mode, but also
      any other fill criterion, for which it can also be useful.
      
      Last change of behavior as a side effect: it is possible to cancel the
      tool changes the usual GIMP way (for instance by right clicking when
      releasing the mouse button).
      e1c40506
    • Jehan's avatar
      app: make line art pre-computation in threads. · a3cda4ab
      Jehan authored
      This makes the speed sensation of the tool much faster as line art can
      be computed in dead time when you start the tool or when you move the
      pointer.
      a3cda4ab
    • Jehan's avatar
      app: compute line art in advance. · f246f404
      Jehan authored
      Right now, this is mostly meaningless as it is still done sequentially.
      But I am mostly preparing the field to pre-compute the line art as
      background thread.
      f246f404
    • Jehan's avatar
      app: fix line art labellization. · 93a49951
      Jehan authored
      The older labelling based off CImg code was broken (probably because of
      me, from my port). Anyway I realized what it was trying to do was too
      generic, which is why we had to fix the result later (labeling all
      non-stroke pixels as 0, etc.). Instead I just implemented a simpler
      labelling and only look for stroke regions. It still over-label a bit
      the painting but a lot less, and is much faster.
      93a49951
    • Jehan's avatar
      app: better use GeglBufferIterator! · c4ff8154
      Jehan authored
      I don't actually need to loop through borders first. This is what the
      abyss policy is for, and I can simply check the iterator position to
      verify I am within buffer boundaries or not.
      This simplifies the code a lot.
      c4ff8154
    • Jehan's avatar
      app: directly update the mask buffer with gegl_node_blit_buffer(). · f02993fb
      Jehan authored
      No need to create a temporary buffer for this.
      f02993fb
    • Jehan's avatar
      app: create a simple priority map for line art selection flooding. · 410c7475
      Jehan authored
      We actually don't need to compute distance map. I just make the simplest
      priority map, with 1 any line art pixel and 0 any other pixel (in mask
      or not), lowest priority being propagated first.
      And let the flooding begin!
      410c7475
    • Jehan's avatar
      app: with recent gegl:watershed-transform, no need for intermediate... · e905ea7b
      Jehan authored
      ... labels buffer.
      We can watershed directly the mask buffer being correctly flagged.
      This commit relies on merge request gegl!8 being accepted and merged.
      e905ea7b
    • Jehan's avatar
      app: use char array for temporary data (rather than a GEGL buffer). · 0c80f8a7
      Jehan authored
      Also use more GeglBufferIterator on input GEGL buffer.
      Using a char array is much less expensive and accelerated the line
      erosion a lot!
      Moving to GeglBufferIterator is not finished, but I do in steps.
      0c80f8a7
    • Jehan's avatar
      app: use simpler allocated variables. · f975f15e
      Jehan authored
      Allocating double-level arrays is just very inefficient.
      f975f15e
    • Jehan's avatar
      f19181dc
    • Jehan's avatar
      app: fix stroke labels in gimp_lineart_estimate_stroke_width(). · 910d7934
      Jehan authored
      I must make sure that stroke pixels are labelled 0 and non-stroke other
      than 0.
      910d7934