LMMS/lmms

Piano roll pitch bend doesn't cause gui update

Open

#7,675 创建于 2025年2月1日

在 GitHub 查看
 (0 评论) (0 反应) (0 负责人)C++ (7,132 star) (961 fork)batch import
buggood first issuegui

描述

System Information

Linux Mint x86_64 Cinnamon

LMMS Version(s)

nightly

Most Recent Working Version

No response

Bug Summary

In the piano roll, when the pitch bending feature is used on a note, if an automation node is updated via double clicking, the piano roll window will not update and the pitch bending line will stay the same until the cursor hovers over it.

Expected Behaviour

The piano roll updates when the automation node changes value.

Steps To Reproduce

Open a new project, create and open a midi clip, place a note and use the pitch bending tool on it. Create 2 automation nodes in the automation editor and double click one of them to change it's value. When the value is changed the automation editor will update, but the piano roll will not show the updated pitch bending line.

Logs

Screenshots / Minimum Reproducible Project

No response

Please search the issue tracker for existing bug reports before submitting your own.

  • I have searched all existing issues and confirmed that this is not a duplicate.

贡献者指南

技术栈
cpp
领域
desktop
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
C++Qt basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
70
研究方向
Investigate the piano roll's pitch bend rendering code, likely in the PianoRoll class. When an automation node value is changed, the automation editor updates but the piano roll does not. Ensure that after modifying the automation node, the piano roll's widget is triggered to repaint its pitch bend line. Look for existing update/repaint calls in similar scenarios and apply to this case.