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Instead of having a complicated check to see if the cursor is in the last

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position to avoid an explicit wrap, actually move it there.

Some UTF-8 fixes to come.
This commit is contained in:
Nicholas Marriott
2009-10-17 08:24:46 +00:00
parent 70355021d8
commit 43d62c1ae3
3 changed files with 65 additions and 44 deletions
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68
screen-write.c
View File

@@ -22,7 +22,7 @@
#include "tmux.h"
void screen_write_initctx(struct screen_write_ctx *, struct tty_ctx *);
void screen_write_initctx(struct screen_write_ctx *, struct tty_ctx *, int);
void screen_write_overwrite(struct screen_write_ctx *);
/* Initialise writing with a window. */
@@ -418,9 +418,14 @@ screen_write_copy(struct screen_write_ctx *ctx,
/* Set up context for TTY command. */
void
screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
screen_write_initctx(
struct screen_write_ctx *ctx, struct tty_ctx *ttyctx, int save_last)
{
struct screen *s = ctx->s;
struct grid *gd = s->grid;
const struct grid_cell *gc;
const struct grid_utf8 *gu;
u_int xx;
ttyctx->wp = ctx->wp;
@@ -429,6 +434,23 @@ screen_write_initctx(struct screen_write_ctx *ctx, struct tty_ctx *ttyctx)
ttyctx->orlower = s->rlower;
ttyctx->orupper = s->rupper;
if (!save_last)
return;
/* Save the last cell on the screen. */
gc = NULL;
for (xx = 1; xx < screen_size_x(s); xx++) {
gc = grid_view_peek_cell(gd, screen_size_x(s) - xx, s->cy);
if (!(gc->flags & GRID_FLAG_PADDING))
break;
}
ttyctx->last_width = xx;
memcpy(&ttyctx->last_cell, gc, sizeof ttyctx->last_cell);
if (gc->flags & GRID_FLAG_UTF8) {
gu = grid_view_peek_utf8(gd, screen_size_x(s) - xx, s->cy);
memcpy(&ttyctx->last_utf8, gu, sizeof ttyctx->last_utf8);
}
}
/* Cursor up by ny. */
@@ -541,7 +563,7 @@ screen_write_alignmenttest(struct screen_write_ctx *ctx)
struct grid_cell gc;
u_int xx, yy;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
memcpy(&gc, &grid_default_cell, sizeof gc);
gc.data = 'E';
@@ -576,7 +598,7 @@ screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx)
if (nx == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cx <= screen_size_x(s) - 1)
grid_view_insert_cells(s->grid, s->cx, s->cy, nx);
@@ -600,7 +622,7 @@ screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
if (nx == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cx <= screen_size_x(s) - 1)
grid_view_delete_cells(s->grid, s->cx, s->cy, nx);
@@ -625,7 +647,7 @@ screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
if (ny == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
grid_view_insert_lines(s->grid, s->cy, ny);
@@ -639,7 +661,7 @@ screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
if (ny == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cy < s->rupper || s->cy > s->rlower)
grid_view_insert_lines(s->grid, s->cy, ny);
@@ -666,7 +688,7 @@ screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
if (ny == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
grid_view_delete_lines(s->grid, s->cy, ny);
@@ -680,7 +702,7 @@ screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
if (ny == 0)
return;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cy < s->rupper || s->cy > s->rlower)
grid_view_delete_lines(s->grid, s->cy, ny);
@@ -698,7 +720,7 @@ screen_write_clearline(struct screen_write_ctx *ctx)
struct screen *s = ctx->s;
struct tty_ctx ttyctx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
grid_view_clear(s->grid, 0, s->cy, screen_size_x(s), 1);
@@ -713,7 +735,7 @@ screen_write_clearendofline(struct screen_write_ctx *ctx)
struct tty_ctx ttyctx;
u_int sx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
sx = screen_size_x(s);
@@ -731,7 +753,7 @@ screen_write_clearstartofline(struct screen_write_ctx *ctx)
struct tty_ctx ttyctx;
u_int sx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
sx = screen_size_x(s);
@@ -777,7 +799,7 @@ screen_write_reverseindex(struct screen_write_ctx *ctx)
struct screen *s = ctx->s;
struct tty_ctx ttyctx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
if (s->cy == s->rupper)
grid_view_scroll_region_down(s->grid, s->rupper, s->rlower);
@@ -861,7 +883,7 @@ screen_write_linefeed(struct screen_write_ctx *ctx, int wrapped)
{
struct tty_ctx ttyctx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
screen_write_linefeedscreen(ctx, wrapped);
@@ -909,7 +931,7 @@ screen_write_clearendofscreen(struct screen_write_ctx *ctx)
struct tty_ctx ttyctx;
u_int sx, sy;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
sx = screen_size_x(s);
sy = screen_size_y(s);
@@ -929,7 +951,7 @@ screen_write_clearstartofscreen(struct screen_write_ctx *ctx)
struct tty_ctx ttyctx;
u_int sx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
sx = screen_size_x(s);
@@ -950,7 +972,7 @@ screen_write_clearscreen(struct screen_write_ctx *ctx)
struct screen *s = ctx->s;
struct tty_ctx ttyctx;
screen_write_initctx(ctx, &ttyctx);
screen_write_initctx(ctx, &ttyctx, 0);
grid_view_clear(s->grid, 0, 0, screen_size_x(s), screen_size_y(s));
@@ -1004,8 +1026,12 @@ screen_write_cell(
}
memcpy(tmp_gu->data + i, udata, UTF8_SIZE - i);
/* Assume the previous character has just been input. */
screen_write_initctx(ctx, &ttyctx);
/*
* Assume the previous character has just been input.
* XXX There is no guarantee this is true, need to redraw
* entire line.
*/
screen_write_initctx(ctx, &ttyctx, 0);
ttyctx.ptr = udata;
tty_write(tty_cmd_utf8character, &ttyctx);
return;
@@ -1019,6 +1045,9 @@ screen_write_cell(
gc = &tmp_gc;
}
/* Initialise the redraw context, saving the last cell. */
screen_write_initctx(ctx, &ttyctx, 1);
/* If in insert mode, make space for the cells. */
if (s->mode & MODE_INSERT && s->cx <= screen_size_x(s) - width) {
xx = screen_size_x(s) - s->cx - width;
@@ -1063,7 +1092,6 @@ screen_write_cell(
grid_view_set_utf8(gd, s->cx, s->cy, &gu);
/* Move the cursor. */
screen_write_initctx(ctx, &ttyctx);
s->cx += width;
/* Draw to the screen if necessary. */

5
tmux.h
View File

@@ -970,6 +970,11 @@ struct tty_ctx {
u_int orupper;
u_int orlower;
/* Saved last cell on line. */
struct grid_cell last_cell;
struct grid_utf8 last_utf8;
u_int last_width;
};
/* Mouse input. */

34
tty.c
View File

@@ -456,7 +456,7 @@ tty_draw_line(struct tty *tty, struct screen *s, u_int py, u_int ox, u_int oy)
/*
* Don't move the cursor to the start permission if it will wrap there
* itself; much the same as the conditions in tty_cmd_cell.
* itself.
*/
gl = NULL;
if (py != 0)
@@ -842,33 +842,21 @@ tty_cmd_cell(struct tty *tty, const struct tty_ctx *ctx)
{
struct window_pane *wp = ctx->wp;
struct screen *s = wp->screen;
struct grid_line *gl;
u_int wx, wy;
u_int cx;
tty_region_pane(tty, ctx, ctx->orupper, ctx->orlower);
wx = ctx->ocx + wp->xoff;
wy = ctx->ocy + wp->yoff;
/*
* If:
*
* - the line was wrapped:
* - the cursor is beyond the edge of the screen,
* - the desired position is at the left,
* - and either a) the desired next line is the one below the current
* or b) the current line is the bottom of the scroll region,
*
* Then just printing the next character will be enough to scroll into
* place, so don't do an explicit cursor move.
* Should the cursor be in the last cursor position ready for a natural
* wrap? If so - and it isn't - move to and rewrite the last cell.
*/
gl = NULL;
if (ctx->ocy != 0)
gl = &s->grid->linedata[s->grid->hsize + ctx->ocy - 1];
if (wy == 0 || (gl != NULL && !(gl->flags & GRID_LINE_WRAPPED)) ||
tty->cx < tty->sx || /* not at edge of screen */
wx != 0 || /* don't want 0 next */
(wy != tty->cy + 1 && tty->cy != ctx->orlower + wp->yoff))
if (ctx->ocx + wp->xoff > tty->sx - ctx->last_width) {
if (tty->cx < tty->sx) {
cx = screen_size_x(s) - ctx->last_width;
tty_cursor_pane(tty, ctx, cx, ctx->ocy);
tty_cell(tty, &ctx->last_cell, &ctx->last_utf8);
}
} else
tty_cursor_pane(tty, ctx, ctx->ocx, ctx->ocy);
tty_cell(tty, ctx->cell, ctx->utf8);