Improve display panel title bar

[cmeyer]

• make it match panel platform style
• macos: filled 'x' button on the left
• windows: title aligned left
• add a distinct 'edit' or equivalent icon (pencil?) button to help users find title/info editing
• consider adding size/storage info when available layout space allows it
• "(4)(512,512)(1024,) [1024MB]"

[jamesrussell216]

@cmeyer quick question on this one - on your last two points why is it important to have that info in the title? Every piece of additional info that goes in there dilutes what I'd argue is the important information - the actual title. Surely having that info in the Inspector is sufficient?

[cmeyer]

It already shows up as a tool-tip - but I think having the "space used" would be helpful.

[jamesrussell216]

What do you mean by "spaced used" @cmeyer ? Do you mean literally using the space because it's there?

[cmeyer]

Something like "45MB" meaning 45MB used on disk.

If we add compression storage, we might want something like "45MB disk/90MB memory" meaning "45MB storage on disk" but "90MB when loaded in memory". I know that could be confusing, so I'm open to other ideas, but both are valid/useful pieces of information. Note: the memory usage is difficult to quantify since HDF5 files are memory mapped and don't necessarily use RAM.

An alternative to the memory memory is to have something like Firefox and Chrome have, which is a window that shows resources being used, i.e. if memory is being used.

In any case, this sounds like a different issue that shouldn't go into the title bar. I've edited the top comment to remove that part of the request.

[cmeyer]

I had experimented with this, but seemingly didn't keep anything other than this minimal code snippet to experiment with:

diff --cc nion/swift/Panel.py
index a8aa52c3,a8aa52c3..9c50c3b3
--- a/nion/swift/Panel.py
+++ b/nion/swift/Panel.py
@@@ -440,7 -440,7 +440,7 @@@ class HeaderCanvasItem(CanvasItem.Canva
                  drawing_context.text_align = 'center'
                  drawing_context.text_baseline = 'bottom'
                  drawing_context.fill_style = '#000'
--                drawing_context.fill_text(self.title, canvas_size.width // 2, canvas_size.height - self.__text_offset)
++                drawing_context.fill_text(self.title + " \N{LOWER RIGHT PENCIL}", canvas_size.width // 2, canvas_size.height - self.__text_offset)

[jamesrussell216]

Notes:

@Tiomat85 has put in a PR for the edit functionality so hopefully we can tick that off.

Other items on here are styling questions - we will have some trouble doing the MacOS one as we don't have macs! How do we want to handle this from an Issue admin point of view? We can go and move the title to be left aligned (@cmeyer - is that just for Windows or MacOS as well? I'm guessing the former but want to check) we can do the Windows side but you might need to pick up the MacOS side!