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For GTK runtime, don't call cursorPosCallback if cursor pos didn't actually change. (#4973)

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Fixes #3345

Piggybacking on the logic introduced PR
https://github.com/ghostty-org/ghostty/pull/3997, this patch prevents
mouse motion events with the same cursor position triggered by the
window title updating from un-hiding the mouse even when
`mouse-hide-while-typing` config item is true.
This commit is contained in:
Mitchell Hashimoto
2025-01-12 07:21:39 -08:00
committed by GitHub
parent e3b6bb71a0 faea09bbde
commit caddf59db5
1 changed files with 27 additions and 21 deletions
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18
src/apprt/gtk/Surface.zig
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@ -1496,17 +1496,22 @@ fn gtkMouseMotion(
.y = @floatCast(scaled.y),
};
// When the GLArea is resized under the mouse, GTK issues a mouse motion
// event. This has the unfortunate side effect of causing focus to potentially
// change when `focus-follows-mouse` is enabled. To prevent this, we check
// if the cursor is still in the same place as the last event and only grab
// focus if it has moved.
// There seem to be at least two cases where GTK issues a mouse motion
// event without the cursor actually moving:
// 1. GLArea is resized under the mouse. This has the unfortunate
// side effect of causing focus to potentially change when
// `focus-follows-mouse` is enabled.
// 2. The window title is updated. This can cause the mouse to unhide
// incorrectly when hide-mouse-when-typing is enabled.
// To prevent incorrect behavior, we'll only grab focus and
// continue with callback logic if the cursor has actually moved.
const is_cursor_still = @abs(self.cursor_pos.x - pos.x) < 1 and
@abs(self.cursor_pos.y - pos.y) < 1;
if (!is_cursor_still) {
// If we don't have focus, and we want it, grab it.
const gl_widget = @as(*c.GtkWidget, @ptrCast(self.gl_area));
if (!is_cursor_still and c.gtk_widget_has_focus(gl_widget) == 0 and self.app.config.@"focus-follows-mouse") {
if (c.gtk_widget_has_focus(gl_widget) == 0 and self.app.config.@"focus-follows-mouse") {
self.grabFocus();
}
@ -1521,6 +1526,7 @@ fn gtkMouseMotion(
log.err("error in cursor pos callback err={}", .{err});
return;
};
}
}
fn gtkMouseLeave(