The object offset is calculated correctly for channels in the
GIMP_IS_ITEM() case using gimp_item_bounds().
Also did some general formatting cleanup in the entire file.
Which returns a boolean indicating if there is content at all, and the
bounds as double x, y, width, height because for most use cases that's
better than x1, y1, x2, y2. Wrap the method with two functions
gimp_item_bounds() which returns integer bounds and
gimp_item_bounds_f() which returns the original double bounds.
...but they aren't clipped
gimp_display_shell_profile_can_convert_to_u8(): allow the shortcut of
converting directly to 8-bit for display only for GIMP_COMPONENT_TYPE_U8.
This might be an lcms bug, the code can be enabled again for U16 and
U32 if it's indeed an lcms bug and it gets fixed.
...certain sets of linked layers
Fix the move tool (GimpEditSelectionTool) using the same principle
as the other "linked item" features, just a bit more complicated...
Never translate the active item and its linked items separately,
always translate the entire list at once.
The linked logic was distributed across the entire file. Changed the
code to prepare lists of items that are translated live (layers and
vectors), and items that are translated at the end (channels, masks
and the selection). In the motion and button release functions, simply
use the prepared lists without any further duplicated checking.
Also clean up the stuff a bit, there is more cleanup needed but first
the fix...
...certain sets of linked layers
Fix for translating layers from the PDB, and with the cursor keys
for gimpeditselectiontool. Moving layers with the mouse is still broken.
The approach is exactly the same as in 25a696c7.
...certain sets of linked layers
Fix this bug for flip, rotate and general transforms (not for move yet):
gimp_item_linked_flip,rotate,transform(): always transform the passed
item too (do not filter it out of the list of items), so these functions
do the entire job of transforming a linked group now. Transforming the
active item separately didn't work (and is not implementable) if both
a layer and its parent layer group were linked.
flip tool, transform tool, layer->transform callbacks: don't call
gimp_item_foo() *and* (if the item is linked) gimp_item_linked_foo().
Instead call gimp_item_linked_foo() if the item is linked, and
gimp_item_foo() otherwise.
This commit also kills the mis-feature of transforming the selected
pixels of the active layer, and then the linked items completely. We
now either only transform the selected area *or* the linked group.
