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Add scroll-middle copy mode command to make cursor line in the middle,

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from Varun Kumar E in GitHub issue 3307.
This commit is contained in:
nicm 2022-08-23 08:14:19 +00:00
parent 7c2dcd7238
commit 416c27c995
3 changed files with 34 additions and 0 deletions
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1
key-bindings.c
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@ -605,6 +605,7 @@ key_bindings_init(void)
"bind -Tcopy-mode-vi h { send -X cursor-left }",
"bind -Tcopy-mode-vi j { send -X cursor-down }",
"bind -Tcopy-mode-vi k { send -X cursor-up }",
"bind -Tcopy-mode-vi z { send -X scroll-middle }",
"bind -Tcopy-mode-vi l { send -X cursor-right }",
"bind -Tcopy-mode-vi n { send -X search-again }",
"bind -Tcopy-mode-vi o { send -X other-end }",

1
tmux.1
View File

@ -1808,6 +1808,7 @@ The following commands are supported in copy mode:
.It Li "search-forward <for>" Ta "/" Ta ""
.It Li "search-forward-incremental <for>" Ta "" Ta "C-s"
.It Li "search-forward-text <for>" Ta "" Ta ""
.It Li "scroll-middle" Ta "z" Ta ""
.It Li "search-reverse" Ta "N" Ta "N"
.It Li "select-line" Ta "V" Ta ""
.It Li "select-word" Ta "" Ta ""

32
window-copy.c
View File

@ -1250,6 +1250,32 @@ window_copy_cmd_cursor_right(struct window_copy_cmd_state *cs)
return (WINDOW_COPY_CMD_NOTHING);
}
static enum window_copy_cmd_action
window_copy_cmd_scroll_middle(struct window_copy_cmd_state *cs)
{
struct window_mode_entry *wme = cs->wme;
struct window_copy_mode_data *data = wme->data;
u_int mid_value, oy, delta;
int scroll_up; /* >0 up, <0 down */
mid_value = (screen_size_y(&data->screen) - 1) / 2;
scroll_up = data->cy - mid_value;
delta = abs(scroll_up);
oy = screen_hsize(data->backing) + data->cy - data->oy;
log_debug ("XXX %u %u %u %d %u", mid_value, oy, delta, scroll_up, data->oy);
if (scroll_up > 0 && data->oy >= delta) {
window_copy_scroll_up(wme, delta);
data->cy -= delta;
} else if (scroll_up < 0 && oy >= delta) {
window_copy_scroll_down(wme, delta);
data->cy += delta;
}
window_copy_update_selection(wme, 0, 0);
return (WINDOW_COPY_CMD_REDRAW);
}
static enum window_copy_cmd_action
window_copy_cmd_cursor_up(struct window_copy_cmd_state *cs)
{
@ -2780,6 +2806,12 @@ static const struct {
.clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
.f = window_copy_cmd_scroll_down_and_cancel
},
{ .command = "scroll-middle",
.minargs = 0,
.maxargs = 0,
.clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
.f = window_copy_cmd_scroll_middle
},
{ .command = "scroll-up",
.minargs = 0,
.maxargs = 0,