The "filename" parameter must be in UTF-8 and in URI format (for
instance file://path for local files, and not just a path).
Cf. `g_file_new_for_uri()` documentation:
@uri: a UTF-8 string containing a URI
it used to be a typedef to gpointer and actually was a cmsHPROFILE.
Change its API to be more "standard", remove the public close()
function. The object caches both the cmsHPROFILE and the data/length
ICC blob, so conversions between the two become obsolete (simply call
get_lcms_profile() or get_icc_profile()).
Adapt everything to the new API, but port it in a naive way for now,
the code doesn't take advantage of the new possibilities yet (like
refcounting).
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.
