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synced 2025-11-03 16:46:18 +00:00
We can use ECH to clear sections of lines, so use it for internal panes
(that don't touch an edge). Move all the tty clear code into two common functions rather than having the same bunch of checks everywhere.
This commit is contained in:
nicm
238
tty.c
238
tty.c
@@ -754,6 +754,73 @@ tty_redraw_region(struct tty *tty, const struct tty_ctx *ctx)
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}
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}
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static void
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tty_clear_line(struct tty *tty, const struct window_pane *wp, u_int py,
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u_int px, u_int nx, u_int bg)
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{
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log_debug("%s: %u at %u,%u", __func__, nx, px, py);
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/* Nothing to clear. */
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if (nx == 0)
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return;
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/* If genuine BCE is available, can try escape sequences. */
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if (!tty_fake_bce(tty, wp, bg)) {
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/* Off the end of the line, use EL if available. */
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if (px + nx >= tty->sx && tty_term_has(tty->term, TTYC_EL)) {
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tty_cursor(tty, px, py);
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tty_putcode(tty, TTYC_EL);
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return;
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}
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/* At the start of the line. Use EL1. */
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if (px == 0 && tty_term_has(tty->term, TTYC_EL1)) {
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tty_cursor(tty, px + nx - 1, py);
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tty_putcode(tty, TTYC_EL1);
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return;
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}
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/* Section of line. Use ECH if possible. */
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if (tty_term_has(tty->term, TTYC_ECH)) {
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tty_cursor(tty, px, py);
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tty_putcode1(tty, TTYC_ECH, nx);
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return;
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}
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}
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/* Couldn't use an escape sequence, use spaces. */
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tty_repeat_space(tty, nx);
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}
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static void
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tty_clear_area(struct tty *tty, const struct window_pane *wp, u_int py,
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u_int ny, u_int px, u_int nx, u_int bg)
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{
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u_int yy;
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log_debug("%s: %u,%u at %u,%u", __func__, nx, ny, px, py);
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/* Nothing to clear. */
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if (nx == 0 || ny == 0)
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return;
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/* If genuine BCE is available, can try escape sequences. */
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if (!tty_fake_bce(tty, wp, bg)) {
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if (px == 0 &&
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px + nx >= tty->sx &&
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py + ny >= tty->sy &&
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tty_term_has(tty->term, TTYC_ED)) {
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tty_cursor(tty, 0, py);
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tty_putcode(tty, TTYC_ED);
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return;
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}
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}
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/* Couldn't use an escape sequence, loop over the lines. */
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for (yy = py; yy < py + ny; yy++)
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tty_clear_line(tty, wp, yy, px, nx, bg);
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}
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void
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tty_draw_pane(struct tty *tty, const struct window_pane *wp, u_int py, u_int ox,
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u_int oy)
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@@ -766,7 +833,7 @@ tty_draw_line(struct tty *tty, const struct window_pane *wp,
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struct screen *s, u_int py, u_int ox, u_int oy)
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{
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struct grid_cell gc, last;
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u_int i, j, sx, width;
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u_int i, j, sx, nx, width;
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int flags, cleared = 0;
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char buf[512];
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size_t len;
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@@ -857,16 +924,10 @@ tty_draw_line(struct tty *tty, const struct window_pane *wp,
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tty_putn(tty, buf, len, width);
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}
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if (!cleared && sx < tty->sx) {
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nx = screen_size_x(s) - sx;
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if (!cleared && sx < tty->sx && nx != 0) {
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tty_default_attributes(tty, wp, 8);
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tty_cursor(tty, ox + sx, oy + py);
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if (sx != screen_size_x(s) &&
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ox + screen_size_x(s) >= tty->sx &&
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tty_term_has(tty->term, TTYC_EL) &&
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!tty_fake_bce(tty, wp, 8))
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tty_putcode(tty, TTYC_EL);
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else
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tty_repeat_space(tty, screen_size_x(s) - sx);
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tty_clear_line(tty, wp, oy + py, ox + sx, nx, 8);
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}
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tty->flags = (tty->flags & ~TTY_NOCURSOR) | flags;
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@@ -1012,56 +1073,36 @@ void
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tty_cmd_clearline(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct screen *s = wp->screen;
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u_int sx = screen_size_x(s);
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u_int nx, py = ctx->yoff + ctx->ocy;
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tty_default_attributes(tty, wp, ctx->bg);
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tty_cursor_pane(tty, ctx, 0, ctx->ocy);
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if (tty_pane_full_width(tty, ctx) &&
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!tty_fake_bce(tty, wp, ctx->bg) &&
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tty_term_has(tty->term, TTYC_EL))
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tty_putcode(tty, TTYC_EL);
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else
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tty_repeat_space(tty, sx);
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nx = screen_size_x(wp->screen);
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tty_clear_line(tty, wp, py, ctx->xoff, nx, ctx->bg);
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}
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void
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tty_cmd_clearendofline(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct screen *s = wp->screen;
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u_int sx = screen_size_x(s);
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u_int nx, py = ctx->yoff + ctx->ocy;
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tty_default_attributes(tty, wp, ctx->bg);
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tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
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if (tty_pane_full_width(tty, ctx) &&
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tty_term_has(tty->term, TTYC_EL) &&
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!tty_fake_bce(tty, wp, ctx->bg))
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tty_putcode(tty, TTYC_EL);
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else
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tty_repeat_space(tty, sx - ctx->ocx);
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nx = screen_size_x(wp->screen) - ctx->ocx;
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tty_clear_line(tty, wp, py, ctx->xoff + ctx->ocx, nx, ctx->bg);
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}
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void
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tty_cmd_clearstartofline(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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u_int nx, py = ctx->yoff + ctx->ocy;
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tty_default_attributes(tty, wp, ctx->bg);
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if (ctx->xoff == 0 &&
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tty_term_has(tty->term, TTYC_EL1) &&
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!tty_fake_bce(tty, ctx->wp, ctx->bg)) {
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tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
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tty_putcode(tty, TTYC_EL1);
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} else {
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tty_cursor_pane(tty, ctx, 0, ctx->ocy);
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tty_repeat_space(tty, ctx->ocx + 1);
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}
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nx = screen_size_x(wp->screen) - ctx->ocx;
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tty_clear_line(tty, wp, py, ctx->xoff, ctx->ocx + 1, ctx->bg);
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}
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void
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@@ -1159,116 +1200,69 @@ void
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tty_cmd_clearendofscreen(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct screen *s = wp->screen;
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u_int i, j;
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u_int sx = screen_size_x(s), sy = screen_size_y(s);
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u_int px, py, nx, ny;
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tty_default_attributes(tty, wp, ctx->bg);
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tty_region_pane(tty, ctx, 0, sy - 1);
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tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
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tty_margin_off(tty);
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if (tty_pane_full_width(tty, ctx) &&
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ctx->yoff + wp->sy >= tty->sy - 1 &&
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status_at_line(tty->client) <= 0 &&
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tty_term_has(tty->term, TTYC_ED)) {
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tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
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tty_putcode(tty, TTYC_ED);
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} else if (tty_pane_full_width(tty, ctx) &&
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tty_term_has(tty->term, TTYC_EL) &&
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!tty_fake_bce(tty, wp, ctx->bg)) {
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tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
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tty_putcode(tty, TTYC_EL);
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if (ctx->ocy != sy - 1) {
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tty_cursor_pane(tty, ctx, 0, ctx->ocy + 1);
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for (i = ctx->ocy + 1; i < sy; i++) {
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tty_putcode(tty, TTYC_EL);
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if (i == sy - 1)
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continue;
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tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
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tty->cy++;
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}
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}
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} else {
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tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
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tty_repeat_space(tty, sx - ctx->ocx);
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for (j = ctx->ocy + 1; j < sy; j++) {
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tty_cursor_pane(tty, ctx, 0, j);
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tty_repeat_space(tty, sx);
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}
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}
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px = ctx->xoff;
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nx = screen_size_x(wp->screen);
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py = ctx->yoff + ctx->ocy + 1;
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ny = screen_size_y(wp->screen) - ctx->ocy - 1;
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tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg);
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px = ctx->xoff + ctx->ocx;
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nx = screen_size_x(wp->screen) - ctx->ocx;
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py = ctx->yoff + ctx->ocy;
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tty_clear_line(tty, wp, py, px, nx, ctx->bg);
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}
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void
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tty_cmd_clearstartofscreen(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct screen *s = wp->screen;
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u_int i, j;
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u_int sx = screen_size_x(s), sy = screen_size_y(s);
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u_int px, py, nx, ny;
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tty_default_attributes(tty, wp, ctx->bg);
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tty_region_pane(tty, ctx, 0, sy - 1);
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tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
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tty_margin_off(tty);
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if (tty_pane_full_width(tty, ctx) &&
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tty_term_has(tty->term, TTYC_EL) &&
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!tty_fake_bce(tty, wp, ctx->bg)) {
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tty_cursor_pane(tty, ctx, 0, 0);
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for (i = 0; i < ctx->ocy; i++) {
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tty_putcode(tty, TTYC_EL);
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tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
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tty->cy++;
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}
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} else {
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tty_cursor_pane(tty, ctx, 0, 0);
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for (j = 0; j < ctx->ocy; j++) {
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tty_cursor_pane(tty, ctx, 0, j);
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tty_repeat_space(tty, sx);
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}
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}
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tty_cursor_pane(tty, ctx, 0, ctx->ocy);
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tty_repeat_space(tty, ctx->ocx + 1);
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px = ctx->xoff;
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nx = screen_size_x(wp->screen);
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py = ctx->yoff;
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ny = ctx->ocy - 1;
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tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg);
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px = ctx->xoff;
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nx = ctx->ocx + 1;
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py = ctx->yoff + ctx->ocy;
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tty_clear_line(tty, wp, py, px, nx, ctx->bg);
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}
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void
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tty_cmd_clearscreen(struct tty *tty, const struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct screen *s = wp->screen;
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u_int i, j;
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u_int sx = screen_size_x(s), sy = screen_size_y(s);
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u_int px, py, nx, ny;
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tty_default_attributes(tty, wp, ctx->bg);
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tty_region_pane(tty, ctx, 0, sy - 1);
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tty_region_pane(tty, ctx, 0, screen_size_y(wp->screen) - 1);
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tty_margin_off(tty);
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if (tty_pane_full_width(tty, ctx) &&
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ctx->yoff + wp->sy >= tty->sy - 1 &&
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status_at_line(tty->client) <= 0 &&
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tty_term_has(tty->term, TTYC_ED)) {
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tty_cursor_pane(tty, ctx, 0, 0);
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tty_putcode(tty, TTYC_ED);
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} else if (tty_pane_full_width(tty, ctx) &&
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tty_term_has(tty->term, TTYC_EL) &&
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!tty_fake_bce(tty, wp, ctx->bg)) {
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tty_cursor_pane(tty, ctx, 0, 0);
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for (i = 0; i < sy; i++) {
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tty_putcode(tty, TTYC_EL);
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if (i != sy - 1) {
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tty_emulate_repeat(tty, TTYC_CUD, TTYC_CUD1, 1);
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tty->cy++;
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}
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}
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} else {
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tty_cursor_pane(tty, ctx, 0, 0);
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for (j = 0; j < sy; j++) {
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tty_cursor_pane(tty, ctx, 0, j);
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tty_repeat_space(tty, sx);
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}
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}
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px = ctx->xoff;
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nx = screen_size_x(wp->screen);
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py = ctx->yoff;
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ny = screen_size_y(wp->screen);
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tty_clear_area(tty, wp, py, ny, px, nx, ctx->bg);
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}
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void
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