add undo and redo buttons, can undo all interactions. The reset button
is equivalent to undoing all operations and lets you press redo to get
back to before you reset. Doing something after undo will of course
clear all redo events.
Make sure that temporarily setting/unsetting tool->control's "preserve
tool across image changes" does not mess up the default value:
Introduce gimp_tool_control_push/pop_preserve() which restores the old
state automatically, and use it in all tools, instead of saying
set_preserve(TRUE/FALSE) around image changes.
gimp_transform_tool_real_transform(): make sure we clip layer masks
and channels to their original extents also when transforming them
completely (not just a selection of them).
There are still many uses of literal SHIFT and MOD1 left, but all uses
of CONTROL are gone. Should work exactly as before on Win/X11, and
still has some glitches on OSX.
For example starting GIMP and pressing
Ctrl-N Enter Shift-T (or Shift-R or Shift-P)
showed warnings on the console, and with window manager's
focus mode set to 'click' it was also possible to crash GIMP.
which removes a lot of code from the transform tool, and reduces the
number of canvas items used for the transform grid from possibly
gazillions to one.
The generic shutdown triggered by shift-click executing copes with an
already halted tool, but we don't want to add checks to tons of
button_release functions.
Instead, add drawable, transform, x1, y1 etc. properties. This is
cleaner and has the nice side effect of not leaving artifacts, because
the changed state of the transform tool doesn't affect the extents
calculation any longer.
and use the stuff from GimpTransformOptions directly. The copied
values were only there because of XOR drawing. Also did some more
cleanup and junk removal.
And remove all the complicated handling code entirely. This makes
GimpTransformTool a lot less complex. As a nice side effect, the
preview is now always 100% in sync with the grid and handles.
instead of keeping them around as members. This is another artifact
from ancient times. Also get rid of some more legacy junk
code. Disable more code in GimpTransformToolUndo but keep it around
even though it does nothing at the moment.
It made the transform code hard to read and never belonged into the
tile manager anyway. It's a simple pixel buffer that should not know
about any position in an image. Instead, pass around the offsets of
tile managers explicitly, so everything is less obscure for the price
of having more parameters. This will also help replacing TileManagers
with GeglBuffers.
