Spacebar grab multi-directional view panning

[nekohayo]

For those who are not using a multitouch/multi-scroll-direction trackpad, but rather a desktop computer with a mouse, and who are used to panning with the spacebar (like in GIMP, Inkscape, etc.), it would be nice to have the ability to do so in Minder too. When no node or sidebar widget is selected for editing, holding the spacebar would allow panning simultaneously on X and Y by moving the mouse, until the spacebar is released.

[phase1geo]

This can already be accomplished by holding down the Control key while moving the mouse. I believe this is documented in the Shortcuts cheat sheet.

[nekohayo]

Doesn't work here in version 1.11.2 (from Fedora 33, but I understand it to be roughly the same thing as version 1.11.3), and it does not show up in the keyboard shortcuts dialog... but in any case Ctrl+mousemove isn't standard, spacebar+mousemove is (in all creative apps I've encountered)... besides, ctrl+mousemove would interfere with multi-selections, I would not recommend that to be bound to panning.

[phase1geo]

I misspoke. You can either use the middle mouse click + drag or Alt + mouse movement to pan the canvas.

[nekohayo]

Ah! I didn't realize that because it's not in the shortcuts cheatsheet dialog nor the github README (but, to your credit, it is in https://github.com/phase1geo/Minder/wiki/Canvas, which I had to expressedly look out for now that I've been told the feature actually exists, as there is no built-in user manual in the app other than the shortcuts cheatsheet).

Asides from "maybe it'd be worth having in the readme's cheetsheet too", I would also have two software-side suggestions:

• Supporting the spacebar shortcut as well as the Alt one. Normally there are no downsides, the only corner case is if the user is already editing a node's title and uses spacebar instead of alt, in that case it will insert spaces instead of toggling pan mode, but that's normal/expected. Just an idea in case you'd like to consider it.
• Having the mouse cursor change (to the multidirectional 4-ways-move arrows, instead of the regular arrow cursor; I believe the standard 4-way move cursor that we see in GIMP and Inkscape is "GDK_FLEUR" according to this page) when Alt (and possibly Spacebar) is held down over the canvas. This would make it more discoverable because when I see that cursor while pressing a key, I know exactly what it does, and I might have discovered it spontaneously simply by interacting with the app if it had been there. That cursor should also be used while middle-click-dragging.

[phase1geo]

I can confirm that the pan mouse shortcut is documented under the "Mouse Events" panel in the shortcuts cheetsheat. If it's not there for 1.11.2, it is there in 1.11.3 (and later).