Forward mouse wheel events to applications in mouse tracking mode#178
Merged
kdj0c merged 1 commit intokmscon:mainfrom Dec 17, 2025
Merged
Forward mouse wheel events to applications in mouse tracking mode#178kdj0c merged 1 commit intokmscon:mainfrom
kdj0c merged 1 commit intokmscon:mainfrom
Conversation
When an application enables mouse tracking (e.g., vim with 'set mouse=a'), kmscon now forwards mouse wheel events to the application by converting them to button events (button 4 for scroll up, button 5 for scroll down), following the xterm mouse protocol. Previously, wheel events were only handled by kmscon itself for scrolling the terminal history, even when an application requested mouse tracking. This change allows: - Mouse wheel to scroll content in applications like vim, less, etc. when they enable mouse mode - Mouse wheel to continue scrolling kmscon history when no application has enabled mouse tracking (shell prompt) Changes: - Add UTERM_WHEEL case to forward_pointer_event() - Convert wheel events to button 4/5 according to xterm protocol - Use local button variable to allow modification before forwarding
Contributor
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Thanks, that's a useful addition to kmscon. |
Contributor
Author
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There's an update to be done in libtsm too: kmscon/libtsm#5 |
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Fixes mouse wheel support in applications that use mouse tracking mode (e.g., vim, less, tmux).
Problem
When an application enables mouse tracking (like vim with ), kmscon was not forwarding mouse wheel events to the application. The wheel events were only used for scrolling kmscon's own terminal history, even when the application explicitly requested mouse input.
Solution
This PR adds support for forwarding mouse wheel events to applications by converting them to button events following the xterm mouse protocol:
Behavior
Changes
Testing
This fix brings kmscon's mouse wheel behavior in line with other terminal emulators like xterm, urxvt, and gnome-terminal.