starred/terminal
1
0
Fork 0
mirror of https://github.com/microsoft/terminal.git synced 2026-02-04 05:35:20 +00:00
Code Issues 19.0k Packages Projects Releases 20 Wiki Activity

[PR #9980] First three interactivity fixes #27843

New Issue
Open
opened 2026-01-31 09:24:36 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 09:24:36 +00:00
Owner
Copy Link

Original Pull Request: https://github.com/microsoft/terminal/pull/9980

State: closed
Merged: Yes

Summary of the Pull Request

This PR encompasses the first three bugs we found post-#9820.

A: Mousedown, select, SCROLL does a weird thing with endpoints that doesn't happen in stable

We were using the terminal position to set the selection anchor, when we should have used the pixel position.

This is fixed in 4f4df01.

B: Trackpad scrolling down with small increments seems buggy

This one's the most complicated. The touchpad sends very many small scroll deltas, less than one row at a time. The control scrollbar can store a double, so small deltas can accumulate. Originally, these would accumulate in the scrollbar, and we'd only read that out as an int in the scrollbar updater, which is throttled.

In the interactivity split, there's no place for us to store that double. We immediately narrow to an int for ControlInteractivity::_updateScrollbar.

So this introduces a double inside ControlInteractivity as a fake scrollbar, with which to accumulate to.

This is fixed in 33d29fa...0fefc5b

C: Looks like there's a selection issue when you click and drag too quickly.

The diff for this one is:

1.8main
if (_singleClickTouchdownPos)
{
    // Figure out if the user's moved a quarter of a cell's smaller axis away from the clickdown point
    auto& touchdownPoint{ *_singleClickTouchdownPos };
    auto distance{ std::sqrtf(std::powf(cursorPosition.X - touchdownPoint.X, 2) + std::powf(cursorPosition.Y - touchdownPoint.Y, 2)) };
    const til::size fontSize{ _actualFont.GetSize() };

    const auto fontSizeInDips = fontSize.scale(til::math::rounding, 1.0f / _renderEngine->GetScaling());
    if (distance >= (std::min(fontSizeInDips.width(), fontSizeInDips.height()) / 4.f))
    {
        _terminal->SetSelectionAnchor(_GetTerminalPosition(touchdownPoint));
        // stop tracking the touchdown point
        _singleClickTouchdownPos = std::nullopt;
    }
}

if (_singleClickTouchdownPos)
{
    // Figure out if the user's moved a quarter of a cell's smaller axis away from the clickdown point
    auto& touchdownPoint{ *_singleClickTouchdownPos };
    float dx = ::base::saturated_cast<float>(pixelPosition.x() - touchdownPoint.x());
    float dy = ::base::saturated_cast<float>(pixelPosition.y() - touchdownPoint.y());
    auto distance{ std::sqrtf(std::powf(dx, 2) +
                              std::powf(dy, 2)) };

    const auto fontSizeInDips{ _core->FontSizeInDips() };
    if (distance >= (std::min(fontSizeInDips.width(), fontSizeInDips.height()) / 4.f))
    {
        _core->SetSelectionAnchor(terminalPosition);
        // stop tracking the touchdown point
        _singleClickTouchdownPos = std::nullopt;
    }
}

        _terminal->SetSelectionAnchor(_GetTerminalPosition(touchdownPoint));

vs

        _core->SetSelectionAnchor(terminalPosition);

We're now using the location of the drag event as the selection anchor, instead of the location that the user initially clicked. Oops.

PR Checklist

  • Checks three boxes, though I'll be shocked if they're the last.
  • I work here
  • Tests added/passed 🎉🎉🎉
  • [n/a] Requires documentation to be updated

Detailed Description of the Pull Request / Additional comments

All three have tests, 🙌🙌🙌🙌

Validation Steps Performed

Manual, and automated via tests

**Original Pull Request:** https://github.com/microsoft/terminal/pull/9980 **State:** closed **Merged:** Yes --- ## Summary of the Pull Request This PR encompasses the first three bugs we found post-#9820. ### A: Mousedown, select, SCROLL does a weird thing with endpoints that doesn't happen in stable We were using the terminal position to set the selection anchor, when we should have used the pixel position. This is fixed in 4f4df01. ### B: Trackpad scrolling down with small increments seems buggy This one's the most complicated. The touchpad sends very many small scroll deltas, less than one row at a time. The control scrollbar can store a `double`, so small deltas can accumulate. Originally, these would accumulate in the scrollbar, and we'd only read that out as an `int` in the scrollbar updater, which is throttled. In the interactivity split, there's no place for us to store that double. We immediately narrow to an `int` for `ControlInteractivity::_updateScrollbar`. So this introduces a double inside `ControlInteractivity` as a fake scrollbar, with which to accumulate to. This is fixed in 33d29fa...0fefc5b ### C: Looks like there's a selection issue when you click and drag too quickly. The diff for this one is: <table> <tr><td>1.8</td><td>main</td></tr> <tr> <td> ```c++ if (_singleClickTouchdownPos) { // Figure out if the user's moved a quarter of a cell's smaller axis away from the clickdown point auto& touchdownPoint{ *_singleClickTouchdownPos }; auto distance{ std::sqrtf(std::powf(cursorPosition.X - touchdownPoint.X, 2) + std::powf(cursorPosition.Y - touchdownPoint.Y, 2)) }; const til::size fontSize{ _actualFont.GetSize() }; const auto fontSizeInDips = fontSize.scale(til::math::rounding, 1.0f / _renderEngine->GetScaling()); if (distance >= (std::min(fontSizeInDips.width(), fontSizeInDips.height()) / 4.f)) { _terminal->SetSelectionAnchor(_GetTerminalPosition(touchdownPoint)); // stop tracking the touchdown point _singleClickTouchdownPos = std::nullopt; } } ``` </td> <td> ```c++ if (_singleClickTouchdownPos) { // Figure out if the user's moved a quarter of a cell's smaller axis away from the clickdown point auto& touchdownPoint{ *_singleClickTouchdownPos }; float dx = ::base::saturated_cast<float>(pixelPosition.x() - touchdownPoint.x()); float dy = ::base::saturated_cast<float>(pixelPosition.y() - touchdownPoint.y()); auto distance{ std::sqrtf(std::powf(dx, 2) + std::powf(dy, 2)) }; const auto fontSizeInDips{ _core->FontSizeInDips() }; if (distance >= (std::min(fontSizeInDips.width(), fontSizeInDips.height()) / 4.f)) { _core->SetSelectionAnchor(terminalPosition); // stop tracking the touchdown point _singleClickTouchdownPos = std::nullopt; } } ``` </td> </tr> </table> ```c++ _terminal->SetSelectionAnchor(_GetTerminalPosition(touchdownPoint)); ``` vs ```c++ _core->SetSelectionAnchor(terminalPosition); ``` We're now using the location of the drag event as the selection anchor, instead of the location that the user initially clicked. Oops. ## PR Checklist * [x] Checks three boxes, though I'll be shocked if they're the last. * [x] I work here * [x] Tests added/passed 🎉🎉🎉 * [n/a] Requires documentation to be updated ## Detailed Description of the Pull Request / Additional comments All three have tests, 🙌🙌🙌🙌 ## Validation Steps Performed Manual, and automated via tests
claunia added the pull-request label 2026-01-31 09:24:36 +00:00
Sign in to join this conversation.
No Branch/Tag Specified
Branches Tags
Labels
Clear labels
⛺ Reserved
A11yCO
A11yMAS
A11ySev1
A11ySev2
A11ySev3
A11yTTValidated
A11yUsable
A11yVoiceAccess
A11yWCAG
Area-Accessibility
Area-AtlasEngine
Area-AzureShell
Area-Build
Area-Build
Area-Chat
Area-CmdPal
Area-CodeHealth
Area-Commandline
Area-CookedRead
Area-DefApp
Area-Extensibility
Area-Fonts
Area-GroupPolicy
Area-i18n
Area-Input
Area-Interaction
Area-Interop
Area-Localization
Area-Output
Area-Performance
Area-Portable
Area-Quality
Area-Remoting
Area-Rendering
Area-Schema
Area-Server
Area-Settings
Area-SettingsUI
Area-ShellExtension
Area-ShellExtension
Area-ShellExtension
Area-Suggestions
Area-Suggestions
Area-TerminalConnection
Area-TerminalControl
Area-Theming
Area-UserInterface
Area-VT
Area-Windowing
Area-WPFControl
AutoMerge
Blocking-Ingestion
Culprit-Centennial
Culprit-WinUI
Disability-All
Disability-Blind
Disability-LowVision
Disability-Mobility
External-Blocked-WinUI3
Fixed
Gathering-Data
good first issue
HCL-E+D
HCL-WindowsTerminal
Help Wanted
Impact-Compatibility
Impact-Compliance
Impact-Correctness
Impact-Visual
In-PR
InclusionBacklog
InclusionBacklog-Windows TerminalWin32
InclusionCommitted-202206
Issue-Bug
Issue-Docs
Issue-Feature
Issue-Feature
Issue-Question
Issue-Samples
Issue-Scenario
Issue-Task
Needs-Attention
Needs-Author-Feedback
Needs-Bisect
Needs-Discussion
Needs-Repro
Needs-Tag-Fix
Needs-Tag-Fix
Needs-Triage
No-Recent-Activity
Priority-0
Priority-1
Priority-2
Priority-3
Product-Cmd.exe
Product-Colortool
Product-Colortool
Product-Colortool
Product-Conhost
Product-Conpty
Product-Meta
Product-Powershell
Product-Terminal
Product-WSL
pull-request
Mirrored from GitHub Pull Request
 Resolution-Answered
Resolution-By-Design
Resolution-Duplicate
Resolution-External
Resolution-Fix-Available
Resolution-Fix-Committed
Resolution-No-Repro
Resolution-Won't-Fix
Severity-Blocking
Severity-Crash
Severity-DataLoss
spam
this-will-be-a-breaking-change
Tracking-External
WindowsTerminal_Win32
Work-Item
zAskModeBug
zInbox-Bug
No Label pull-request
Milestone
No items
No Milestone
Projects
Clear projects
No project
Assignees
Clear assignees
claunia
No Assignees
1 Participants
Notifications
Due Date
No due date set.
Dependencies

No dependencies set.

Reference: starred/terminal#27843
Delete Branch "%!s()"

Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?