Make all dragging actions abortable with right click

[Keavon]

This is an ongoing list of all actions we find which need to be made abortable by right-clicking. Right clicking should be possible anywhere in or outside the app window, not just over the widget that's being dragged.

Node graph

• Dragging nodes should restore their initial positions
• Dragging a wire should restore its initial connection
  • Moved to Proper node graph interaction aborting with Esc/RMB #2336:

    • Esc needs to not close the graph

• Box selection should, upon right clicking, restore the selection before drag-selecting
  • Moved to Proper node graph interaction aborting with Esc/RMB #2336:

    • Esc needs to not close the graph

Layers panel

• Moved to: Make dragging layers to rearrange them abortable with Esc/RMB #2335

  • Dragging to rearrange layers (in Firefox, this actually confirms the action instead of aborting it, in Chrome it just does nothing)

Workspace

• Resizing the gutter between panel areas

Color picker

• Saturation/Value square
• Hue track
• Alpha track
• Gradient spectrum input knobs

Viewport

• Scrollbars

Tools

• Moved to: Restore prior selection after aborting a dragged box/lasso selection #2279

  • Select & Path tools: drag-selecting, upon right clicking, should restore the selection before drag-selecting (details and explanation webcast in this discussion on Discord)

Header bar and widgets

• Moved to: Menu lists should allow dragging from their spawner and releasing on a selection #2280

  • Menu bar entries should—first of all, open on mousedown and let you drag down and release on an entry—then right click in the menu to abort and close it
  • Same as above for dropdown menus

[a-khushal]

@Keavon is this the expected behaviour??
https://github.com/user-attachments/assets/19489765-4ab1-4f29-a9f7-9b14bae62589

[Keavon]

@a-khushal did you upload the wrong video?

[a-khushal]

@Keavon The video is the solution for this issue: "Menu bar entries should—first of all, open on mousedown and let you drag down and release on an entry—then right click in the menu to abort and close it", whenever mousedown happens on a menu, it opens the dropdown, and when dragged down and released on an entry, it selects that entry

[Keavon]

@a-khushal I see, although I won't be able to tell much from the video. Please open a PR and I'll try it out.

[a-khushal]

@Keavon please refer #2164