C++ screen_write_cursormove函数代码示例

void
window_copy_scroll_down(struct window_pane *wp, u_int ny)
{
	struct window_copy_mode_data	*data = wp->modedata;
	struct screen			*s = &data->screen;
	struct screen_write_ctx		 ctx;

	if (ny > screen_hsize(&wp->base))
		return;

	if (data->oy > screen_hsize(&wp->base) - ny)
		ny = screen_hsize(&wp->base) - data->oy;
	if (ny == 0)
		return;
	data->oy += ny;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_insertline(&ctx, ny);
	window_copy_write_lines(wp, &ctx, 0, ny);
	if (s->sel.flag && screen_size_y(s) > ny) {
		window_copy_update_selection(wp);
		window_copy_write_line(wp, &ctx, ny);
	} else if (ny == 1) /* nuke position */
		window_copy_write_line(wp, &ctx, 1);
	screen_write_cursormove(&ctx, data->cx, data->cy);
	window_copy_update_selection(wp);
	screen_write_stop(&ctx);
}

void
window_copy_scroll_up(struct window_pane *wp, u_int ny)
{
	struct window_copy_mode_data	*data = wp->modedata;
	struct screen			*s = &data->screen;
	struct screen_write_ctx		 ctx;

	if (data->oy < ny)
		ny = data->oy;
	if (ny == 0)
		return;
	data->oy -= ny;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_deleteline(&ctx, ny);
	window_copy_write_lines(wp, &ctx, screen_size_y(s) - ny, ny);
	window_copy_write_line(wp, &ctx, 0);
	if (screen_size_y(s) > 1)
		window_copy_write_line(wp, &ctx, 1);
	if (screen_size_y(s) > 3)
		window_copy_write_line(wp, &ctx, screen_size_y(s) - 2);
	if (s->sel.flag && screen_size_y(s) > ny) {
		window_copy_update_selection(wp);
		window_copy_write_line(wp, &ctx, screen_size_y(s) - ny - 1);
	}
	screen_write_cursormove(&ctx, data->cx, data->cy);
	window_copy_update_selection(wp);
	screen_write_stop(&ctx);
}

void
window_copy_write_line(
    struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
{
	struct window_copy_mode_data	*data = wp->modedata;
	struct screen			*s = &data->screen;
	struct options			*oo = &wp->window->options;
	struct grid_cell		 gc;
	char				 hdr[32];
	size_t	 			 last, xoff = 0, size = 0;

	memcpy(&gc, &grid_default_cell, sizeof gc);
	colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
	colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
	gc.attr |= options_get_number(oo, "mode-attr");

	last = screen_size_y(s) - 1;
	if (py == 0) {
		size = xsnprintf(hdr, sizeof hdr,
		    "[%u/%u]", data->oy, screen_hsize(data->backing));
		if (size > screen_size_x(s))
			size = screen_size_x(s);
		screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
		screen_write_puts(ctx, &gc, "%s", hdr);
	} else if (py == last && data->inputtype != WINDOW_COPY_OFF) {
		if (data->inputtype == WINDOW_COPY_NUMERICPREFIX) {
			xoff = size = xsnprintf(hdr, sizeof hdr,
			    "Repeat: %u", data->numprefix);
		} else {
			xoff = size = xsnprintf(hdr, sizeof hdr,
			    "%s: %s", data->inputprompt, data->inputstr);
		}
		screen_write_cursormove(ctx, 0, last);
		screen_write_puts(ctx, &gc, "%s", hdr);
	} else
		size = 0;

	screen_write_cursormove(ctx, xoff, py);
	screen_write_copy(ctx, data->backing, xoff,
	    (screen_hsize(data->backing) - data->oy) + py,
	    screen_size_x(s) - size, 1);

	if (py == data->cy && data->cx == screen_size_x(s)) {
		memcpy(&gc, &grid_default_cell, sizeof gc);
		screen_write_cursormove(ctx, screen_size_x(s) - 1, py);
		screen_write_putc(ctx, &gc, '$');
	}
}

/* Handle CSI private SM. */
void
input_csi_dispatch_sm_private(struct input_ctx *ictx)
{
	u_int	i;

	for (i = 0; i < ictx->param_list_len; i++) {
		switch (input_get(ictx, i, 0, -1)) {
		case 1:		/* DECCKM */
			screen_write_mode_set(&ictx->ctx, MODE_KCURSOR);
			break;
		case 3:		/* DECCOLM */
			screen_write_cursormove(&ictx->ctx, 0, 0);
			screen_write_clearscreen(&ictx->ctx);
			break;
		case 7:		/* DECAWM */
			screen_write_mode_set(&ictx->ctx, MODE_WRAP);
			break;
		case 25:	/* TCEM */
			screen_write_mode_set(&ictx->ctx, MODE_CURSOR);
			break;
		case 1000:
			screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
			screen_write_mode_set(&ictx->ctx, MODE_MOUSE_STANDARD);
			break;
		case 1002:
			screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
			screen_write_mode_set(&ictx->ctx, MODE_MOUSE_BUTTON);
			break;
		case 1003:
			screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
			screen_write_mode_set(&ictx->ctx, MODE_MOUSE_ANY);
			break;
		case 1004:
			if (ictx->ctx.s->mode & MODE_FOCUSON)
				break;
			screen_write_mode_set(&ictx->ctx, MODE_FOCUSON);
			ictx->wp->flags |= PANE_FOCUSPUSH; /* force update */
			break;
		case 1005:
			screen_write_mode_set(&ictx->ctx, MODE_MOUSE_UTF8);
			break;
		case 1006:
			screen_write_mode_set(&ictx->ctx, MODE_MOUSE_SGR);
			break;
		case 47:
		case 1047:
			window_pane_alternate_on(ictx->wp, &ictx->cell, 0);
			break;
		case 1049:
			window_pane_alternate_on(ictx->wp, &ictx->cell, 1);
			break;
		case 2004:
			screen_write_mode_set(&ictx->ctx, MODE_BRACKETPASTE);
			break;
		default:
			log_debug("%s: unknown '%c'", __func__, ictx->ch);
			break;
		}
	}
}

/* Copy from another screen. */
void
screen_write_copy(struct screen_write_ctx *ctx,
    struct screen *src, u_int px, u_int py, u_int nx, u_int ny)
{
	struct screen		*s = ctx->s;
	struct grid		*gd = src->grid;
	struct grid_line	*gl;
	const struct grid_cell	*gc;
	const struct grid_utf8	*gu;
	struct utf8_data	 utf8data;
	u_int		 	 xx, yy, cx, cy, ax, bx;

	cx = s->cx;
	cy = s->cy;
	for (yy = py; yy < py + ny; yy++) {
		gl = &gd->linedata[yy];
		if (yy < gd->hsize + gd->sy) {
			/*
			 * Find start and end position and copy between
			 * them. Limit to the real end of the line then use a
			 * clear EOL only if copying to the end, otherwise
			 * could overwrite whatever is there already.
			 */
			if (px > gl->cellsize)
				ax = gl->cellsize;
			else
				ax = px;
			if (px + nx == gd->sx && px + nx > gl->cellsize)
				bx = gl->cellsize;
			else
				bx = px + nx;

			for (xx = ax; xx < bx; xx++) {
				if (xx >= gl->cellsize)
					gc = &grid_default_cell;
				else
					gc = &gl->celldata[xx];
				if (!(gc->flags & GRID_FLAG_UTF8)) {
					screen_write_cell(ctx, gc, NULL);
					continue;
				}
				/* Reinject the UTF-8 sequence. */
				gu = &gl->utf8data[xx];
				utf8data.size = grid_utf8_copy(
				    gu, utf8data.data, sizeof utf8data.data);
				utf8data.width = gu->width;
				screen_write_cell(ctx, gc, &utf8data);
			}
			if (px + nx == gd->sx && px + nx > gl->cellsize)
				screen_write_clearendofline(ctx);
		} else
			screen_write_clearline(ctx);
		cy++;
		screen_write_cursormove(ctx, cx, cy);
	}
}

/* Handle CSI private RM. */
void
input_csi_dispatch_rm_private(struct input_ctx *ictx)
{
	struct window_pane	*wp = ictx->wp;
	u_int			 i;

	for (i = 0; i < ictx->param_list_len; i++) {
		switch (input_get(ictx, i, 0, -1)) {
		case 1:		/* DECCKM */
			screen_write_mode_clear(&ictx->ctx, MODE_KCURSOR);
			break;
		case 3:		/* DECCOLM */
			screen_write_cursormove(&ictx->ctx, 0, 0);
			screen_write_clearscreen(&ictx->ctx);
			break;
		case 7:		/* DECAWM */
			screen_write_mode_clear(&ictx->ctx, MODE_WRAP);
			break;
		case 12:
			screen_write_mode_clear(&ictx->ctx, MODE_BLINKING);
			break;
		case 25:	/* TCEM */
			screen_write_mode_clear(&ictx->ctx, MODE_CURSOR);
			break;
		case 1000:
		case 1001:
		case 1002:
			screen_write_mode_clear(&ictx->ctx, ALL_MOUSE_MODES);
			break;
		case 1004:
			screen_write_mode_clear(&ictx->ctx, MODE_FOCUSON);
			break;
		case 1005:
			screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_UTF8);
			break;
		case 1006:
			screen_write_mode_clear(&ictx->ctx, MODE_MOUSE_SGR);
			break;
		case 47:
		case 1047:
			window_pane_alternate_off(wp, &ictx->cell.cell, 0);
			break;
		case 1049:
			window_pane_alternate_off(wp, &ictx->cell.cell, 1);
			break;
		case 2004:
			screen_write_mode_clear(&ictx->ctx, MODE_BRACKETPASTE);
			break;
		default:
			log_debug("%s: unknown '%c'", __func__, ictx->ch);
			break;
		}
	}
}

struct screen *
window_copy_init(struct window_pane *wp)
{
	struct window_copy_mode_data	*data;
	struct screen			*s;
	struct screen_write_ctx	 	 ctx;
	u_int				 i;
	int				 keys;

	wp->modedata = data = xmalloc(sizeof *data);
	data->oy = 0;
	data->cx = wp->base.cx;
	data->cy = wp->base.cy;

	data->lastcx = 0;
	data->lastsx = 0;

	data->rectflag = 0;

	data->inputtype = WINDOW_COPY_OFF;
	data->inputprompt = NULL;
	data->inputstr = xstrdup("");
	data->numprefix = 0;

	data->searchtype = WINDOW_COPY_OFF;
	data->searchstr = NULL;

	wp->flags |= PANE_FREEZE;
	bufferevent_disable(wp->event, EV_READ|EV_WRITE);

	s = &data->screen;
	screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
	if (options_get_number(&wp->window->options, "mode-mouse"))
		s->mode |= MODE_MOUSE;

	keys = options_get_number(&wp->window->options, "mode-keys");
	if (keys == MODEKEY_EMACS)
		mode_key_init(&data->mdata, &mode_key_tree_emacs_copy);
	else
		mode_key_init(&data->mdata, &mode_key_tree_vi_copy);

	s->cx = data->cx;
	s->cy = data->cy;

	screen_write_start(&ctx, NULL, s);
	for (i = 0; i < screen_size_y(s); i++)
		window_copy_write_line(wp, &ctx, i);
	screen_write_cursormove(&ctx, data->cx, data->cy);
	screen_write_stop(&ctx);

	return (s);
}

void
window_copy_redraw_lines(struct window_pane *wp, u_int py, u_int ny)
{
	struct window_copy_mode_data	*data = wp->modedata;
	struct screen_write_ctx	 	 ctx;
	u_int				 i;

	screen_write_start(&ctx, wp, NULL);
	for (i = py; i < py + ny; i++)
		window_copy_write_line(wp, &ctx, i);
	screen_write_cursormove(&ctx, data->cx, data->cy);
	screen_write_stop(&ctx);
}

/* Reset screen state. */
void
screen_write_reset(struct screen_write_ctx *ctx)
{
	struct screen	*s = ctx->s;

	screen_reset_tabs(s);
	screen_write_scrollregion(ctx, 0, screen_size_y(s) - 1);

	s->mode &= ~(MODE_INSERT|MODE_KCURSOR|MODE_KKEYPAD|MODE_FOCUSON);
	s->mode &= ~(ALL_MOUSE_MODES|MODE_MOUSE_UTF8|MODE_MOUSE_SGR);

	screen_write_clearscreen(ctx, 8);
	screen_write_cursormove(ctx, 0, 0);
}

void
window_more_write_line(
    struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
{
	struct window_more_mode_data	*data = wp->modedata;
	struct screen			*s = &data->screen;
	struct options			*oo = &wp->window->options;	
	struct grid_cell		 gc;
	char   				*msg, hdr[32];
	size_t	 			 size;
 	int				 utf8flag;

	utf8flag = options_get_number(&wp->window->options, "utf8");
	memcpy(&gc, &grid_default_cell, sizeof gc);

	if (py == 0) {
		size = xsnprintf(hdr, sizeof hdr,
		    "[%u/%u]", data->top, ARRAY_LENGTH(&data->list));
		screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
		colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
		colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
		gc.attr |= options_get_number(oo, "mode-attr");
		screen_write_puts(ctx, &gc, "%s", hdr);
		memcpy(&gc, &grid_default_cell, sizeof gc);
	} else
		size = 0;

	screen_write_cursormove(ctx, 0, py);
	if (data->top + py  < ARRAY_LENGTH(&data->list)) {
		msg = ARRAY_ITEM(&data->list, data->top + py);
		screen_write_nputs(
		    ctx, screen_size_x(s) - size, &gc, utf8flag, "%s", msg);
	}
	while (s->cx < screen_size_x(s) - size)
		screen_write_putc(ctx, &gc, ' ');
}

/* Reset screen state. */
void
screen_write_reset(struct screen_write_ctx *ctx)
{
	screen_reset_tabs(ctx->s);

	screen_write_scrollregion(ctx, 0, screen_size_y(ctx->s) - 1);

	screen_write_insertmode(ctx, 0);
	screen_write_kcursormode(ctx, 0);
	screen_write_kkeypadmode(ctx, 0);
	screen_write_mousemode_off(ctx);

	screen_write_clearscreen(ctx);
	screen_write_cursormove(ctx, 0, 0);
}

/* Copy from another screen. */
void
screen_write_copy(struct screen_write_ctx *ctx,
    struct screen *src, u_int px, u_int py, u_int nx, u_int ny)
{
	struct screen		*s = ctx->s;
	struct grid		*gd = src->grid;
	struct grid_line	*gl;
	const struct grid_cell	*gc;
	struct utf8_data	 ud;
	u_int		 	 xx, yy, cx, cy, ax, bx;

	cx = s->cx;
	cy = s->cy;
	for (yy = py; yy < py + ny; yy++) {
		gl = &gd->linedata[yy];
		if (yy < gd->hsize + gd->sy) {
			/*
			 * Find start and end position and copy between
			 * them. Limit to the real end of the line then use a
			 * clear EOL only if copying to the end, otherwise
			 * could overwrite whatever is there already.
			 */
			if (px > gl->cellsize)
				ax = gl->cellsize;
			else
				ax = px;
			if (px + nx == gd->sx && px + nx > gl->cellsize)
				bx = gl->cellsize;
			else
				bx = px + nx;

			for (xx = ax; xx < bx; xx++) {
				if (xx >= gl->cellsize)
					gc = &grid_default_cell;
				else
					gc = &gl->celldata[xx];
				grid_cell_get(gc, &ud);
				screen_write_cell(ctx, gc);
			}
			if (px + nx == gd->sx && px + nx > gl->cellsize)
				screen_write_clearendofline(ctx);
		} else
			screen_write_clearline(ctx);
		cy++;
		screen_write_cursormove(ctx, cx, cy);
	}
}

void
window_more_scroll_up(struct window_pane *wp)
{
	struct window_more_mode_data	*data = wp->modedata;
	struct screen_write_ctx		 ctx;

	if (data->top == 0)
		return;
	data->top--;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_insertline(&ctx, 1);
	window_more_write_line(wp, &ctx, 0);
	window_more_write_line(wp, &ctx, 1);
	screen_write_stop(&ctx);
}

void
window_more_scroll_down(struct window_pane *wp)
{
	struct window_more_mode_data	*data = wp->modedata;
	struct screen			*s = &data->screen;
	struct screen_write_ctx		 ctx;

	if (data->top >= ARRAY_LENGTH(&data->list))
		return;
	data->top++;

	screen_write_start(&ctx, wp, NULL);
	screen_write_cursormove(&ctx, 0, 0);
	screen_write_deleteline(&ctx, 1);
	window_more_write_line(wp, &ctx, screen_size_y(s) - 1);
	window_more_write_line(wp, &ctx, 0);
	screen_write_stop(&ctx);
}

/* Flush outstanding cell writes. */
static void
screen_write_flush(struct screen_write_ctx *ctx)
{
	struct screen	*s = ctx->s;
	struct tty_ctx	 ttyctx;
	u_int		 x, y, offset, cx, cy, dirty;
	struct grid_cell gc;

	if (ctx->dirty == 0)
		return;
	dirty = 0;
	log_debug("%s: dirty %u", __func__, ctx->dirty);

	cx = s->cx;
	cy = s->cy;

	offset = 0;
	for (y = 0; y < screen_size_y(s); y++) {
		for (x = 0; x < screen_size_x(s); x++) {
			offset++;
			if (!bit_test(s->dirty, offset - 1))
				continue;
			bit_clear(s->dirty, offset - 1);

			screen_write_cursormove(ctx, x, y);
			grid_view_get_cell(s->grid, x, y, &gc);

			screen_write_initctx(ctx, &ttyctx);
			ttyctx.cell = &gc;
			tty_write(tty_cmd_cell, &ttyctx);
			ctx->written++;

			if (++dirty == ctx->dirty)
				break;
		}
		if (dirty == ctx->dirty)
			break;
	}
	ctx->dirty = 0;

	s->cx = cx;
	s->cy = cy;
}