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Fix faux scrolling for line-based touchpads 

Touchpads which use line-based instead of pixel-based updates send
partial scroll requests, so decimal numbers are important. The current
implementation only really used scroll amounts that are either 1 or -1.

This has been fixed and now the line-based touchpads should have very
smooth scrolling, but the pixel-based approach is still WIP and
completely untested.
This commit is contained in:
Christian Dürr 2017-12-18 17:49:57 +01:00 committed by Joe Wilm
parent e0993587e7
commit 14884deba7
1 changed files with 13 additions and 14 deletions
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27
src/input.rs
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@ -373,19 +373,6 @@ impl<'a, A: ActionContext + 'a> Processor<'a, A> {
match delta {
MouseScrollDelta::LineDelta(_columns, lines) => {
let to_scroll = self.ctx.mouse_mut().lines_scrolled + lines;
// Faux scrolling
if self.ctx.terminal_mode().intersects(mode::ALT_SCREEN_BUF) {
if to_scroll > 0. {
// Scroll up three lines
self.ctx.write_to_pty("\x1bOA\x1bOA\x1bOA".as_bytes());
} else {
// Scroll down three lines
self.ctx.write_to_pty("\x1bOB\x1bOB\x1bOB".as_bytes());
}
return;
}
let code = if to_scroll > 0.0 {
64
} else {
@ -393,8 +380,20 @@ impl<'a, A: ActionContext + 'a> Processor<'a, A> {
};
for _ in 0..(to_scroll.abs() as usize) {
self.normal_mouse_report(code);
if self.ctx.terminal_mode().intersects(mode::ALT_SCREEN_BUF) {
// Faux scrolling
if code == 64 {
// Scroll up one line
self.ctx.write_to_pty("\x1bOA".as_bytes());
} else {
// Scroll down one line
self.ctx.write_to_pty("\x1bOB".as_bytes());
}
} else {
self.normal_mouse_report(code);
}
}
self.ctx.mouse_mut().lines_scrolled = to_scroll % 1.0;
},
MouseScrollDelta::PixelDelta(_x, y) => {