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Windows Smoke Test: Space + Left-Drag Canvas Pan

This is a temporary validation artifact for the fix that prevents Space + left-click drag from inserting a space into the focused terminal on Windows.

Delete this file after the Windows validation pass is complete unless it is explicitly needed longer.

Target

  • Repository: peters/horizon
  • Branch/PR: fix for Windows Space + left-click drag leaking Space into the focused terminal
  • Platform: Windows 11 preferred, Windows 10 acceptable
  • Tester: separate agent or machine, not this Linux workstation

Build Or Install

Choose one:

  1. Build from source on the PR branch
    • Install Rust stable >= 1.88
    • Clone the PR branch
    • Run cargo run --release
  2. Use the PR CI artifact if one is attached
    • Download the Windows build artifact for the PR
    • Launch horizon.exe

Test Setup

  1. Start Horizon with a clean session if practical.
  2. Create one workspace and one terminal panel.
  3. In the terminal, run a command that makes inserted spaces obvious, for example:
    • python -q
    • cmd
    • powershell
  4. Click inside the terminal so it is definitely the focused input target.

Baseline Checks

  1. Press Space once without dragging.
    • Expected: one space is inserted into the terminal.
  2. Type a, Space, b.
    • Expected: the terminal receives a b in that order.
  3. Hold Space, release it without clicking.
    • Expected: one space is inserted, with no stuck input state afterward.

Primary Regression Checks

  1. Focus the terminal.
  2. Hold Space.
  3. Press and hold left mouse.
  4. Drag the canvas several hundred pixels.
  5. Release left mouse, then release Space.
    • Expected: the canvas pans.
    • Expected: no space is inserted into the terminal.
    • Expected: no extra key-up escape sequence or visible artifact appears in the terminal.
  6. Repeat the same flow starting the drag from:
    • terminal body
    • panel titlebar
    • empty canvas

Edge Cases

  1. Hold Space, then press another key such as A before releasing Space.
    • Expected: if no drag occurred, input order remains sane and Horizon does not get stuck in pan mode.
  2. Hold Space, click without moving, then release.
    • Expected: no accidental panel drag or resize.
    • Expected: the terminal does not receive stray spaces from a click-only gesture.
  3. Hold middle mouse and drag.
    • Expected: canvas panning still works.
  4. Use Ctrl+click or Cmd+click style terminal link interactions if available on the platform.
    • Expected: the fix does not break existing modifier-based interactions.
  5. With multiple panels open, focus one terminal and perform the regression check.
    • Expected: no other terminal receives the leaked space.

Persistence And Relaunch

  1. Pan the canvas after the fix.
  2. Close Horizon cleanly.
  3. Relaunch Horizon.
    • Expected: normal persisted layout behavior remains unchanged.
    • Expected: the fix does not introduce stuck pan state after relaunch.

Visual Regression Checks

  1. Capture a screenshot right after launch.
  2. Capture a screenshot after a successful Space + left-drag pan.
  3. Resize the main window and repeat the pan gesture once.
    • Expected: panel chrome, workspace labels, and terminal rendering remain stable.
    • Expected: no jitter, snap-back, or unexpected window movement occurs.

Report Back

Include the following in the PR comment or test report:

  • Windows version
  • How Horizon was launched
  • Pass/fail for each primary regression check
  • Any additional bugs found during the gesture test
  • Launch screenshot and post-pan screenshot