Place overflowing menus to the left of the cursor

[aribradshaw]

Resolves: musescore/MuseScore#33930

When a top-level context menu did not fit to the right of the cursor, MenuView::updateGeometry() only subtracted the screen overlap. This pinned the menu to the screen's right edge and detached it from the cursor.

Use the same left-of-anchor geometry already used for cascading menus. The menu's content now ends at the cursor position when it cannot fit on the right. Screen geometry remains the fit boundary, so the menu may still extend beyond the MuseScore window when the display has room.

Previous related work: musescore/MuseScore#33867 corrected the popup-position state in this branch and exposed the remaining horizontal clamp, but did not change the clamp itself.

Testing:

• git diff --check passes.

• The changed file passes the repository's pinned Uncrustify configuration.

• Configured the MuseScore consumer with Qt 6.10.2, MSVC 19.51, and Ninja on Windows.

• Built muse_uicomponents_qml and muse_uicomponents_qml_tests successfully.

• Ran MenuViewTests.OverflowingTopLevelMenuOpensLeftOfCursor with QT_QPA_PLATFORM=offscreen; it passed and directly exercised MenuView::updateGeometry().

• Ran the complete offscreen UI-components suite: 21 tests from 6 suites passed.

• The full application sources compiled and MuseScoreStudio5.exe linked after a local Windows long-path/debug-symbol workaround. Behavioral verification remained headless, so the combined manual-runtime checklist item below remains unchecked.

• I signed the CLA as aribradshawaz:

• The title of the PR describes the problem it addresses.

• Each commit's message describes its purpose and effects, and references the issue it resolves. If changes are extensive, there is a sequence of easily reviewable commits.

• The code in the PR follows the coding rules.

• I understand all aspects of the code I'm contributing and I'm able to explain it if requested.

• The code compiles and runs on my machine, preferably after each commit individually. I have manually tested and verified that my changes fulfil their intended purpose.

• No prior attempts to resolve this problem exist, or if they do, I listed them in my PR description and described how I avoided repeating past mistakes.

• There are no unnecessary changes.

• I created a unit test or vtest to verify the changes I made (if applicable).

Build configuration

audacity: audacity/audacity/master
audacity platforms: linux_x64
musescore: musescore/MuseScore/main
musescore platforms: linux_x64

[coderabbitai]

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• framework/uicomponents/qml/Muse/UiComponents/tests/menuview_tests.cpp

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📝 Walkthrough

Walkthrough

When a non-cascading menu exceeds the right boundary, MenuView moves it left from the parent’s global position by its full width. The change adds test access and geometry tests that verify placement near the cursor and against the screen boundary.

Merge Risk: ⚪ Minimal · up to e1240

This localized menu-positioning change is supported by targeted tests and successful builds, with no actionable merge-blocking risk remaining beyond normal checks and review.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: positioning overflowing menus to the left of the cursor.
Description check	✅ Passed	The description explains the problem, solution, linked issue, testing, checklist status, and build configuration; the unchecked manual-runtime item is clearly justified.
Linked Issues check	✅ Passed	The implementation and tests satisfy issue #33930 by opening overflowing menus left of the cursor while retaining screen geometry as the fit boundary.
Out of Scope Changes check	✅ Passed	All changes support the menu-positioning fix or its regression coverage, with no unrelated code changes identified.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[mathesoncalum]

[ ] I signed the CLA as username:

Hi! First things first if you'd like to contribute you'll need to sign CLA (https://musescore.org/en/cla). Once you've done that please update this part of the description so that it points to your musescore.org username.

[ ] The code compiles and runs on my machine, preferably after each commit individually. I have manually tested and verified that my changes fulfil their intended purpose.

Is there a reason this part of the checklist wasn't ticked?

[aribradshaw]

Thanks. I have now signed the CLA as aribradshawaz and updated the checklist.

The compile/run item was left unchecked deliberately. I validated the one-file change with git diff --check and the repository's pinned Uncrustify configuration, but this Windows checkout does not yet have the MuseScore Qt toolchain, so I have not claimed a full local build or manual runtime verification. I am working through that environment now and will update the checklist only after it is actually completed.

[aribradshaw]

Follow-up on validation: I installed Qt 6.10.2 and added a focused regression test that invokes the production MenuView::updateGeometry() implementation using Qt's offscreen platform. It verifies that an overflowing top-level menu's content edge aligns with the cursor rather than the virtual screen edge.

Results:

• Focused regression test: passed.
• Complete muse_uicomponents_qml_tests suite: 21 tests from 6 suites passed.
• No window was shown and no desktop interaction was used.

I checked the unit-test item in the description. I left the combined compile/run/manual item unchecked because the behavioral verification was intentionally headless rather than an interactive GUI session.

The PR still has the CLA not signed label even though I signed as aribradshawaz. Please let me know if another account-linking step is required.

[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In `@framework/uicomponents/qml/Muse/UiComponents/tests/menuview_tests.cpp`:
- Around line 88-111: Add a separate geometry test case around
MenuViewTestAccess::updateGeometry using a parentWindow narrower than
availableGeometry, position the anchor near the parent window’s right edge, and
assert that the menu extends past the window boundary while remaining within
availableGeometry; keep the existing screen-edge coverage intact.

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Configuration used: Path: .coderabbit.yaml

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📥 Commits

Reviewing files that changed from the base of the PR and between 994a80c and a6b0821.

📒 Files selected for processing (3)

• framework/uicomponents/qml/Muse/UiComponents/menuview.h
• framework/uicomponents/qml/Muse/UiComponents/tests/CMakeLists.txt
• framework/uicomponents/qml/Muse/UiComponents/tests/menuview_tests.cpp

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