View Markdown source ↗

Revision Graph and comparison viewport navigation

Source baseline: TortoiseGit 7338078f8ddd924b8cddee35f512f2286072136d. This family covers navigation of the existing graph and editor views. It does not certify the whole application or every physical input device.

Revision Graph

RevisionGraphDlgFunc.cpp::DoZoom rescales both scroll positions by the ratio between the new and old zoom. The native graph applies that contract to toolbar, View-menu, percentage-box, fit and modifier-wheel routes. Native scroll bounds clamp the result after the canvas is resized. This preserves the inspected graph location where the resulting viewport can contain it; it does not substitute a pointer-centered zoom policy for the source origin-scaling contract. Invalid percentages retain the current zoom and viewport.

With the graph canvas focused, arrows move the viewport twenty native points and Page Up/Down move it by half its height, following RevisionGraphDlg.cpp::PreTranslateMessage. Native field editing and unrelated modified shortcuts keep their normal AppKit routes. Escape first cancels an active canvas or overview pan. The graph remains open after this cancellation; normal close behavior remains available when no gesture is active.

Canvas panning and overview navigation capture the accepted press and its owning graph/layout state. Orphan drag events and events after reload, zoom, modal ownership, Quit or closure cannot move the viewport. The overview can still recenter on an accepted click. Native open/closed hand cursors represent the source pan cursors; blocked and retired views release their gesture feedback. The source anchors are RevisionGraphWnd.cpp::CancelMouseZoom, mouse handlers and OnSetCursor. No working rectangle-zoom or middle-button feature is inferred from inactive source remnants.

Compare and Merge

TortoiseMerge/MainFrm.cpp::OnViewLineUpDown and OnViewLineLeftRight scroll all available text views by one displayed line or one character cell. The native commands apply these operations to the current two-pane, combined or three-pane presentation without changing source text, caret selection, saved state or Undo history. Wrapped and folded views use their current displayed geometry. Normal caret-arrow behavior remains unchanged.

The pinned source has command handlers but no corresponding menu or accelerator entry in its resource files. Native menu discovery is therefore a macOS adaptation, rather than a claim of a matching Windows shortcut. Current owned editor/menu guards reject commands during competing operations, sheets and retired or replaced documents.

Verification and remaining work

The dated grouped checkpoint records the actual app build, native scenarios, failures and focused repairs. Private repositories, preferences and receiver windows separate these checks from user-owned sessions. No Core production changes are required for this native navigation family.

Native points, font-cell and viewport metrics replace Windows device pixels. Physical keyboard layouts, mouse/trackpad timing, VoiceOver, complete source layout, installed signed Finder/App Store workflows, minimum-version/Intel and full hosted integration remain separate acceptance requirements.