GUI fixes: Add escape drawing, disable right-click drag, disable double left-click

[mrariden]

• Add escape drawing by hitting escape key.

• Disable unused right-click and drag to zoom behavior. This is not needed because other zoom controls exist and right-click to drag occasionally gets in the way of annotation.

• Disable double left-click to reset the view. This was especially painful when looking at orthoviews in the 3D gui and quickly clicking around to see the orthoviews update.

• Update docs to describe escape draw behavior

• GUI testing protocol

• tests passing

[mrariden]

This would be a good opportunity to de-duplicate the keyPressEvent code that is present in both gui.py and gui3d.py. I would pass the events that can be handled by the parent class up the hierarchy, so the 3D key press code is specific to the 3D GUI.

Done in another PR

[mrariden]

Tests passing on

• Mac
• Ubuntu

GUI manual testing:

Image loading

• Drop image into GUI
• Load from menu
• Right/left arrow keys to load next image in folder

Network

• 'run CPSAM' button works
• Adjusting parameters & hit return to re-run dynamics
  • Diameter
  • Flow threshold
  • cell probability threshold
  • normalization percentiles
  • niter dynamics
• User models work

GUI: display

• Image colors work with drop down and arrow key up/down
• Display data cycles through flows/cellprob/image/restored with drop down and pg up/down
• Auto adjust saturation checkbox and sliders work

GUI: mouse/ROIs

• Right click and draw cell
• Command/ctrl and click to delete cell
• Left click and drag to pan
• Scroll to zoom
• Number of ROIs updates correctly when add/delete cell
• Masks/outline can be turned on/off with checkbox and (Z & X)
• Delete multiple ROIs using region selection works
• Esc to escape drawing

GUI: menus

• All File > saving functions work
• All Edit > functions work
• Models >
  • Add model and remove model works
  • Train new model, adjusting training params/name works
• Help menu items appear when clicked

Filtering

• Sharpen and smooth radius appear correct and make a 'restored' viewer image
• tile_norm blocksize normalizes images per block
• Smoothing in 3D works

[mrariden]

GUI status is good for merging, there are unrelated issues that should be fixed in other PRs:

1. Filter button doesn't work when you click it twice. You need to remove the filter and then apply it with different settings.
2. Click 'auto adjust' saturation doesn't immediately snap to auto adjust.
3. User trained models are incorrect in drop down

[mrariden]

Still need to replace the reset view functionality with a new key