Add a GimpTransformGridTool::matrix_to_info() virtual function,
which should extract the tool-specific transformation parameters
given a transformation matrix, and the old parameter set (which is
needed in some tools, to derive the parameters that aren't encoded
in the matrix, such as the pivot point). The transformation matrix
can be any combination of matrices calculated by the tool, and
their inverses. Subclasses should only implement this function if
every such matrix can be mapped back to transformation parameters.
This is currently the case for all the transform-grid tools, except
for the shear tool (since it only supports shearing along one of
the horizontal or the vertical directions, however, the combined
matrix may require shearing in both directions).
When a transform-grid tool implements this function, show a chain-
button between the two transform-direction radio-buttons in the
tool options. When the chain-button is linked, whenever the
transform corresponding to the active direction is modified, adjust
the transform corresponding to the non-active direction such that
the overall transform remains the same.
One notable workflow that this enables is transforming a layer
while adjusting a different area than its boundary, by first
defining the area while the transform-directions are linked, and
then transforming the area while the transform-directions are
unlinked.
In GimpTransformGridTool, allow performing simultaneous forward
(normal) and backward (corrective) transforms, by having each
transform direction operate on an independent set of parameters.
In other words, whereas the transform-grid tools previously had a
single transform, which could be applied either normally or
correctively using the "direction" tool-option, they now have two
independent transforms, one applied normally and the other
applied correctively, which are toggled using the "direction"
option. The overall transform is the combination of the backward
transform, followed by the forward transform.
Another way to think about it, is that the tool transforms a source
shape into a destination shape. The source shape is defined by the
backward transform, and the destination shape is defined by the
forward transform. Wherewas previously only one of these shapes
could be controlled (the other shape always being the item bounds),
it's now possible to control both shapes in a single transform.
The next commit will allow modifying both shapes simultaneously,
making this even more useful.
Note that since both transforms start off as the identity, using
only one of the transform directions has the same behavior as
before.
Add an undo_desc field to GimpTransformToolClass, which subclasses
should set to the tool's default undo description. Provide a
default implementation for the get_undo_desc() vfunc, which returns
(a copy of) undo_desc. This simplifies transform tools that have a
static undo descrption, as well as provides a fallback when a
detailed undo description can't be generated (not currently
relevant, but will be used in the next commit).
When rotating an item around its center using the rotate tool,
i.e., if the pivot point hasn't been moved, don't include the pivot
coordinates in the undo description.
In GimpToolCompass, add a read-only "effective-orientation"
property, which returns the actual orientation of the compass; in
particular, if the "orientation" property is set to AUTO,
"effective-orientation" returns HORIZONTAL or VERTICAL, depending
on the current compass direction. In 3-point mode, the property
always returns AUTO.
In GimpMeasureTool, don't try to access the "straighten" button
when halting the tool if it's NULL, which can happen when the
measure tool is selected upon startup, but is changed before its
tool-options GUI is constructed.
In gimp_transform_matrix_generic(), apply the resulting matrix even
if the transformation is invalid, since GimpGenericTransformTool
relies on the matrix to properly update the transform-grid widget.
In GimpTransformGridTool, when the "show-preview" tool-option
changes, don't take the transform validity into account when
deciding whether to hide the current layer -- it should only affect
the visibility of the preview, not the layer.
...1920*1980 resolution
In GimpOperationTool, make the generated GUI scrollable if it is
higher than half the monitor's workarea. This is meant as a last
resort for generated GUIs that do not have a custom constructor that
makes them usable using better layouts.
gimplanguagestore-parser.c (parse_iso_codes): instead of
special-casing Windows and OS X, use ENABLE_RELOCATABLE_RESOURCES and
find the package relative to ${gimp_installation_directory}, so
relocating it works on all platforms (also flatpack, snap, whatever),
given the --enable-relocatable-bundle configure switch is used.
In pygimp/plug-ins/Makefile.am, fix the rule for the generated
plug-in files, so that they're re-copied to the build dir upon
changes to the source plug-in files.
When initializaing the perspective-clone tool in paint mode, the
GimpDrawTool may already be active, causing the call to
gimp_draw_tool_start() to fail with a CRITICAL. Stop the draw tool
first, if active, to avoid that.
In GimpPerspectiveCloneTool, use PIXEL_CENTER cursor precision
while setting the source, and place the source-position handle at
the center of the selected pixel, rather than at its top-left
corner.
Additionally, disable the paint tool while adjusting the
perspective, so that the brush outline isn't shown, and the cursor
precision remains SUBPIXEL, even if the hard-edge option is
toggled.
... which can use to enable/disable certain aspects of
GimpPaintTool (in particular, brush-outline drawing). Should be
used by subclasses, to temporarily disable the paint tool while in
a non-paint mode (currently, this is only needed by the
perspective-clone tool; see next commit.)
In paint options as well in layer list.
I also updated an opacity spin scale in GimpBrushSelect core widget, but
this one doesn't look like it is used anywhere anymore.
gimp_plug_in_handle_proc_install(): print the procedure name when
bailing out of a wrong proc install call. For an obsolete full-path
menu label, also print the label. Original patch by Liam Quin.
This plug-in failed to cross-build because these macros were not defined
in the `float.h` of my MinGW64 environment (and they are used in some
ilmbase headers). Just define them ourselves if they are absent. I do
this only on MinGW environment because these should really be defined on
Linux (and other UNIX-like, I guess?) and if they are not, we may have a
bigger issue.
Ell