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TUI: Reset cursor color when applicable #8572

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Resets the TUI cursor color if:
- current 'guicursor' mode does not specify a highlight group
- cursor highlight group has "inverse" or "reverse" flag
- on Nvim exit

We interpret,  "inverse" to mean "default cursor".

Example:

    hi Cursor guifg=bg guibg=fg
    set termguicolors
    set guicursor=n-v-c-sm:block,i-ci-ve:ver25-Cursor,r-cr-o:hor20

    * When the cursor shape is block, its color will be "inverse"
    * When the cursor shape is I-beam, its color will be `hi Cursor`.

This is useful e.g. to prevent `set listchars=eol:¬` causing your cursor
color to a low contrast color in insert mode because you cursor are
often at EOL in insert mode.

close #8572
This commit is contained in:
Yichao Zhou 2018-06-16 19:28:28 -07:00 committed by Justin M. Keyes
parent 4fa3492a6f
commit 7f990741f7
2 changed files with 36 additions and 7 deletions
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16
runtime/doc/options.txt
View File

@ -2789,17 +2789,27 @@ A jump table for the options with a short description can be found at |Q_op|.
of the numbers is zero, there is no blinking. E.g.: >
:set guicursor=n:blinkon0
< {group-name}
a highlight group name, that sets the color and font
for the cursor
Highlight group name that sets the color and font for
the cursor. |inverse|/reverse and no group-name are
interpreted as "the host terminal default cursor
colors" which usually invert bg and fg colors.
{group-name}/{group-name}
Two highlight group names, the first is used when
no language mappings are used, the other when they
are. |language-mapping|
Examples of parts:
n-c-v:block-nCursor in Normal, Command-line and Visual mode, use a
n-c-v:block-nCursor In Normal, Command-line and Visual mode, use a
block cursor with colors from the "nCursor"
highlight group
n-v-c-sm:block,i-ci-ve:ver25-Cursor,r-cr-o:hor20
In Normal et al. modes, use a block cursor
with the default colors defined by the host
terminal. In Insert-likes modes, use
a vertical bar cursor with colors from
"Cursor" highlight group. In Replace-likes
modes, use a underline cursor with
default colors.
i-ci:ver30-iCursor-blinkwait300-blinkon200-blinkoff150
In Insert and Command-line Insert mode, use a
30% vertical bar cursor with colors from the

27
src/nvim/tui/tui.c
View File

@ -100,6 +100,7 @@ typedef struct {
bool mouse_enabled;
bool busy, is_invisible;
bool cork, overflow;
bool cursor_color_changed;
cursorentry_T cursor_shapes[SHAPE_IDX_COUNT];
HlAttrs clear_attrs;
kvec_t(HlAttrs) attrs;
@ -112,6 +113,7 @@ typedef struct {
int enable_lr_margin, disable_lr_margin;
int set_rgb_foreground, set_rgb_background;
int set_cursor_color;
int reset_cursor_color;
int enable_focus_reporting, disable_focus_reporting;
int resize_screen;
int reset_scroll_region;
@ -186,10 +188,12 @@ static void terminfo_start(UI *ui)
data->busy = false;
data->cork = false;
data->overflow = false;
data->cursor_color_changed = false;
data->showing_mode = SHAPE_IDX_N;
data->unibi_ext.enable_mouse = -1;
data->unibi_ext.disable_mouse = -1;
data->unibi_ext.set_cursor_color = -1;
data->unibi_ext.reset_cursor_color = -1;
data->unibi_ext.enable_bracketed_paste = -1;
data->unibi_ext.disable_bracketed_paste = -1;
data->unibi_ext.enable_lr_margin = -1;
@ -278,6 +282,9 @@ static void terminfo_stop(UI *ui)
unibi_out(ui, unibi_cursor_normal);
unibi_out(ui, unibi_keypad_local);
unibi_out(ui, unibi_exit_ca_mode);
if (data->cursor_color_changed) {
unibi_out_ext(ui, data->unibi_ext.reset_cursor_color);
}
// Disable bracketed paste
unibi_out_ext(ui, data->unibi_ext.disable_bracketed_paste);
// Disable focus reporting
@ -965,9 +972,19 @@ static void tui_set_mode(UI *ui, ModeShape mode)
cursorentry_T c = data->cursor_shapes[mode];
if (c.id != 0 && c.id < (int)kv_size(data->attrs) && ui->rgb) {
int color = kv_A(data->attrs, c.id).rgb_bg_color;
UNIBI_SET_NUM_VAR(data->params[0], color);
unibi_out_ext(ui, data->unibi_ext.set_cursor_color);
HlAttrs aep = kv_A(data->attrs, c.id);
if (aep.rgb_ae_attr & HL_INVERSE) {
// We interpret "inverse" as "default" (no termcode for "inverse"...).
// Hopefully the user's default cursor color is inverse.
unibi_out_ext(ui, data->unibi_ext.reset_cursor_color);
} else {
UNIBI_SET_NUM_VAR(data->params[0], aep.rgb_bg_color);
unibi_out_ext(ui, data->unibi_ext.set_cursor_color);
data->cursor_color_changed = true;
}
} else if (c.id == 0) {
// No cursor color for this mode; reset to default.
unibi_out_ext(ui, data->unibi_ext.reset_cursor_color);
}
int shape;
@ -1774,8 +1791,10 @@ static void augment_terminfo(TUIData *data, const char *term,
// This seems to be supported for a long time in VTE
// urxvt also supports this
data->unibi_ext.set_cursor_color = (int)unibi_add_ext_str(
ut, NULL, "\033]12;#%p1%06x\007");
ut, "ext.set_cursor_color", "\033]12;#%p1%06x\007");
}
data->unibi_ext.reset_cursor_color = (int)unibi_add_ext_str(
ut, "ext.reset_cursor_color", "\x1b]112\x07");
/// Terminals usually ignore unrecognized private modes, and there is no
/// known ambiguity with these. So we just set them unconditionally.