other things) listen on this property to detect overlay bounds/spatial
representation changes, instead of using a global listener on
DisplayOpts instances. ModelOpts is correspondingly broken, but about to
be fixed.

display on linux/gtk

property change.

Refactored colour map texture a bit, as GLMasks were behaving badly due
to bugs, and minor ambiguities

 - All GLObjects test to see if opts instances have a parent, before
   doing things with their sync properties.
 - Render.py bug - using fsl/utils/layout functions, passing
   showLabels=True, but then passing no labels. Renderpy usage fixed,
   and layout test added (reverts to showLabels=False if no labels are
   provided)
 - CanvasPanel screenshot was passing all overlays, instead of just
   enabled/saved ones
 - settingspy imports wx inside functions, in case we're running in
   headless mode
 - In my SliceCanvas.genGLObject refactoring, I removed a critical piece
   of functionality - genGLObject(updateRenderTextures=True) was not
   updating render textures.

 - RenderTexture unbinds itself on frame buffer configuration fail,
   before raising an error.
 - RenderTexture was potentially doing integer division on texture
   size ratio calculation
 - GL21 LineVector software draw could possibly be called before
   line vertices had been created.
 - Line/RGB vector command line args were not enabled
 - RGBVector was not initialising texture interpolation correctly

SimpleMessageDialog, which just displays a plain message, and
TimeoutDialog, which shows said message, and disappears after a
timeout. ProcessingDialog now inherits form SimpleMessageDialog.

Another dialog, TextEditDialog, shows an editable/selectable piece of
text. This is used by a new CanvasPanel action, showCommandLineArgs,
which pops up a dialog allowing the user to copy the command line to
recreate the currently visible scene.

the current 3D volume, instead of the global 4D min/max.

Cosmetic updates to fslview_parseargs

all. Replaced the old contrast scaling equation with somthing simpler to
invert (and replaced the previously-incorrect inverted scale->contrast
equation). VolumeOpts was incorrectly flipping the resulting bricon
values, as well.

Other small changes - fsldirdlg layout tweak, and ActionButton now does
not require the action to be listed in the strings module.

already set). Related: atlases module does not give up on first import
if FSLDIR is not set - it checks on each function call.

module, just in case I decide to use a different approach to settings
persistence. Overlay module saves the last used directory as a setting,
and does it properly, unlike before.

featresults loadClusterResults function transforms them into
voxels. Max movie mode rate changed to 1 second.

coordinates are in standard space, rather than voxels. Fixed the former,
but not the latter.

font colour/weight  changing on atlas state - no longer dependent
on region lists being generated; instead, the region filter is tested
against the atlas descriptions (all of which have been loaded).

instead of in layouts. BitmapComboBox  does not get disabled properly,
which is causing me headaches.

overlay volume widget is disabled for non-4D images.

OverlaySelectPanel anymore, so it has been deleted. ClusterPanel sets an
appropriate minimum size.

__init__.

the future, I will probably make this more configurable (giving the
ability to link volume display ranges).

CanvasSettingsPanel, which uses WidgetList to display/organise
its controls.

2. DisplayContext (and CanvasPanel) has a new property,
'syncOverlayDisplay`, which syncs/unsyncs Display/DisplayOpts properties
to/from the parent instances.

the VolumeOpts.cmap widget in overlay display panel.

a long time ago. Overlay order was not being preserved when overlays
were removed from the list.

overwriting the values of newly added overlay display properties.

methods. FSLViewPanel sets the wx window variant on control panels, but
it doesn't seem to have an effect.

values when performing recursive class hierarchy search.