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In gimp_drawable_real_{apply,replace}_buffer(), bail if the
applcation region, after intersection with the drawable and mask
extents, is empty.  This avoids trying to create a GeglBuffer with
negative width/height.

... (some sort of corruption)

In gimp_drawable_real_replace_buffer(), adjust the processed buffer
and mask_buffer regions according to the changes made to the
application region, as calculated by intersecting it with the
drawable and mask extents.  This fixes wrong application position
when painting using the heal, dodge/burn, smudge, or convolve
tools, on a drawable whose origin is above/to the left of the
image's origin, and there's a selection active.

... the XCF file

Add a "saving" signal to GimpImage, which is emitted when the image
is about to be saved or exported (but before it's actually saved/
exported).  Connect to this signal in tool-manager, and commit the
current tool in response (unless its GimpToolControl::preserve is
TRUE).

In the performance-log viewer's profile view, retain the current
call-graph path across state changes.

Add undo functionality to the performance-log viewer, which allows
undoing/redoing changes to the sample selection, and the call-graph
state.

Sync with recent changes of the stable flatpak.

Please everyone, feel free to update the list of upcoming
changes/features, if you feel some particular change should be more
prominently exposed in this list (or at the opposite that some change is
not worth mentionning), or for rewording, etc.

We currently construct the tool-options GUI for all the tools at
startup, which takes a significant amount of time.  Instead,
only register the GUI construction function with the tool-options
object, using the new gimp_tools_set_tool_options_gui_func()
function, and use the registered function to construct the GUI when
actually needed.

Fix int-ratio variable formatting when the input is NaN, which can
happen when calculating the standard deviation, if all the values
are infinite.

Fix keyboard sample-range selection.

Deselect all samples when right-clicking a sample graph.

script-fu used to query the information of every PDB procedure on
startup, in order to get the number of parameters for each
procedure.  This was done so that nullary procedures were defined
in such a way as to accept (and ignore) any number of arguments
(and at least one of the scripts we ship relies on this behavior).
However, this requires expensive back-and-forth communication with
the main GIMP process, which notable slowed down script-fu's
startup, and had a non-negligible impact on GIMP's startup time.

Instead, avoid querying procedure information, and implement the
special behavior for nullary procedures at call time.  We do this
by defining, in addition to the "strict" gimp-proc-db-call
procedure, a "permissive" -gimp-proc-db-call internal procedure,
and using the latter to call the predefined PDB procedures.

... after erasing all points

When erasing the last remaining point in the iscissors tool, halt
the tool, rather than leaving the tool active with an empty curve,
which it is not prepared to handle, and which results in a segfault
once trying to add a new point.

Additionally, when erasing the last remaining segment (i.e., the
two last remaining points), don't erase the entire segment (i.e.,
both points), but rather convert the segment to its initial point,
so that, in effect, we only erase the last point of the segment.

This reverts commit d31725a9.

This option is not very useful.  In order to do actual perspective
correction, we need more information, such as the scene's vanishing
point and the camera's focal length.  The measure tool is probably
not the right place to do all that.  Let's simply revert this.

... instead of gtk_dialog_set_alternative_button_order().

When removing the focus widget of a GimpToolWidgetGroup, use the
last child, rather than the first child, as the new focus widget.
This plays nicer with auto-raise, and is probably better anyway.

Add a boolean "perspective correction" option to the measure tool.
When toggled, the measure tool uses two compass widgets, instead of
one.  Straightening the active item in this mode results a
perspective transform that straightens both lines simultaneously,
keeping their origin fixed.

The information displayed in the info window/statusbar always
refers to the currently-focused compass.

When a focused widget is added to a group, make it the new focus-
widget of the group, instead of unsetting its focus if another
widget already has focus.

When removing the focused widget from a group, set a different
widget as the group's focus widget (if one exists), instead of
unsetting the focus widget, so that nonempty groups always have a
focus widget.

In gimp_tool_widget_group_button_press(), explicitly call
gimp_tool_widget_group_hover() before forwarding the event to the
group's hover widget, so that the hover widget gets recalculated.
If a widget is added to the group as a result of a button-press
event, this guarantees that it gets considered as a target for the
same event.

In GimpTransformTools, precalculate the resulting size of the
transformed item(s), and request confirmation if the size grows to
over 10 times the size of the image (in either dimension).  This
protects against transformations that can result in suprprisingly
large items, such as inverted transformations, and, specifically,
perspective-correction transformations performed using the measure
tool, which will be added in the following commits.

Which returns the actual clip mode that will be used by the
drawable for a particular transformation.

In the performance-log viewer, add an option to filter which
threads, and which states of each thread, are included in the
profile.  By default, all threads in the RUNNING state are
included.

In the performance-log viewer, defer updates to the various UI
elements when the selection changes until they're actually shown.
This improves responsiveness when changing the selection.

... added in last commit.

When libbacktrace is available, use it to retrieve source location
information in the Linux GimpBacktrace backend.

... to reduce their verbosity.  Show the full path in the
corresponding tooltip.

Use the less-ambiguous, if just as clumsy,
"format-indent-more/less" icons, to stand for the
caller -> callee, and callee -> caller, directions, respectively.

Fix searching for samples by thread name, in particular, when there
are unnamed threads.

Use GtkMenuButton, instead of GtkButton, for the find-samples
header button.

Add mnemonics to the find-samples popover.

This reverts commit 40854065, which
is no longer necessary after GEGL commit
c8a0b9eff07c8d9122f55f7b7527d51788ae4575.

Simon Mueller authored Sep 10, 2018 and Jehan committed Sep 19, 2018

Simply always check HKCU first. If that lookup did not yield any result,
fall back to HKLM.

... more GLib 2.58 fallout.