mouse

Overview ¶

Package mouse demonstrates the click, double-click, wheel and drag affordances tuilib components expose when the app shell enables mouse input (app.Options.Mouse = app.MouseClick).

Nothing here is mouse-specific plumbing: the screen holds three ordinary components in a focus.Group and routes messages the usual way. Every behaviour below falls out of components knowing the rect layout gave them.

What to try:

• Click any pane to focus it — the border flips to its active colour.
• Click a row to move the cursor there; double-click to open it, the mouse spelling of enter (rule 14).
• Click a sortable table header to sort by it; click again to flip.
• Click a ▸/▾ glyph in the tree to expand or collapse that node. One click, because the glyph is drawn to say "this opens".
• Roll the wheel over any pane — including an unfocused one. The wheel does what ↓/j does for that component and never steals focus.
• Drag a scrollbar thumb, or click anywhere on its track to jump.
• Click a breadcrumb crumb to jump back up the stack, and the "? help" affordance in the statusbar to open the panel.