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618 lines
14 KiB
C
618 lines
14 KiB
C
/* $Id: screen-write.c,v 1.15 2008-09-26 06:45:26 nicm Exp $ */
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/*
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* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <string.h>
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#include "tmux.h"
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/* Initialise writing with a window. */
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void
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screen_write_start_window(struct screen_write_ctx *ctx, struct window *w)
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{
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struct screen *t = w->screen;
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screen_write_start(ctx, t, tty_write_window, w);
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}
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/* Initialise writing with a client. */
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void
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screen_write_start_client(struct screen_write_ctx *ctx, struct client *c)
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{
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struct screen *t = c->session->curw->window->screen;
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screen_write_start(ctx, t, tty_write_client, c);
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}
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/* Initialise writing with a session. */
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void
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screen_write_start_session(struct screen_write_ctx *ctx, struct session *s)
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{
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struct screen *t = s->curw->window->screen;
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screen_write_start(ctx, t, tty_write_session, s);
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}
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/* Initialise writing. */
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void
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screen_write_start(struct screen_write_ctx *ctx,
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struct screen *s, void (*write)(void *, int, ...), void *data)
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{
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ctx->write = write;
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ctx->data = data;
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ctx->s = s;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORMODE, 0);
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}
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/* Finish writing. */
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void
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screen_write_stop(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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if (ctx->write != NULL && s->mode & MODE_CURSOR)
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ctx->write(ctx->data, TTY_CURSORMODE, 1);
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}
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/* Write character. */
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void
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screen_write_putc(
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struct screen_write_ctx *ctx, struct grid_cell *gc, u_char ch)
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{
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gc->data = ch;
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screen_write_cell(ctx, gc);
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}
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/* Write string. */
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void printflike3
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screen_write_puts(
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struct screen_write_ctx *ctx, struct grid_cell *gc, const char *fmt, ...)
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{
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va_list ap;
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char *msg, *ptr;
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va_start(ap, fmt);
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xvasprintf(&msg, fmt, ap);
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va_end(ap);
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for (ptr = msg; *ptr != '\0'; ptr++)
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screen_write_putc(ctx, gc, (u_char) *ptr);
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xfree(msg);
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}
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/* Copy from another screen. */
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void
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screen_write_copy(struct screen_write_ctx *ctx,
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struct screen *src, u_int px, u_int py, u_int nx, u_int ny)
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{
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struct screen *s = ctx->s;
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struct grid_data *gd = src->grid;
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const struct grid_cell *gc;
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u_int xx, yy, cx, cy;
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cx = s->cx;
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cy = s->cy;
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for (yy = py; yy < py + ny; yy++) {
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for (xx = px; xx < px + nx; xx++) {
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if (xx >= gd->sx || yy >= gd->hsize + gd->sy)
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gc = &grid_default_cell;
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else
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gc = grid_peek_cell(gd, xx, yy);
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screen_write_cell(ctx, gc);
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}
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cy++;
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screen_write_cursormove(ctx, cx, cy);
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}
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}
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/* Cursor up by ny. */
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void
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screen_write_cursorup(struct screen_write_ctx *ctx, u_int ny)
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{
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struct screen *s = ctx->s;
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if (ny > s->cy)
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ny = s->cy;
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if (ny == 0)
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ny = 1;
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s->cy -= ny;
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if (ctx != NULL)
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ctx->write(ctx->data, TTY_CURSORUP, ny);
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}
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/* Cursor down by ny. */
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void
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screen_write_cursordown(struct screen_write_ctx *ctx, u_int ny)
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{
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struct screen *s = ctx->s;
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if (ny > screen_size_y(s) - 1 - s->cy)
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ny = screen_size_y(s) - 1 - s->cy;
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if (ny == 0)
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ny = 1;
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s->cy += ny;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORDOWN, ny);
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}
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/* Cursor right by nx. */
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void
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screen_write_cursorright(struct screen_write_ctx *ctx, u_int nx)
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{
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struct screen *s = ctx->s;
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if (nx > screen_size_x(s) - 1 - s->cx)
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nx = screen_size_x(s) - 1 - s->cx;
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if (nx == 0)
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nx = 1;
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s->cx += nx;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORRIGHT, nx);
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}
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/* Cursor left by nx. */
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void
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screen_write_cursorleft(struct screen_write_ctx *ctx, u_int nx)
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{
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struct screen *s = ctx->s;
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if (nx > s->cx)
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nx = s->cx;
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if (nx == 0)
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nx = 1;
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s->cx -= nx;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORLEFT, nx);
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}
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/* Insert nx characters. */
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void
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screen_write_insertcharacter(struct screen_write_ctx *ctx, u_int nx)
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{
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struct screen *s = ctx->s;
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if (nx > screen_size_x(s) - 1 - s->cx)
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nx = screen_size_x(s) - 1 - s->cx;
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if (nx == 0)
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nx = 1;
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grid_view_insert_cells(s->grid, s->cx, s->cy, nx);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_INSERTCHARACTER, nx);
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}
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/* Delete nx characters. */
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void
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screen_write_deletecharacter(struct screen_write_ctx *ctx, u_int nx)
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{
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struct screen *s = ctx->s;
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if (nx > screen_size_x(s) - 1 - s->cx)
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nx = screen_size_x(s) - 1 - s->cx;
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if (nx == 0)
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nx = 1;
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grid_view_delete_cells(s->grid, s->cx, s->cy, nx);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_DELETECHARACTER, nx);
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}
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/* Insert ny lines. */
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void
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screen_write_insertline(struct screen_write_ctx *ctx, u_int ny)
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{
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struct screen *s = ctx->s;
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if (ny > screen_size_y(s) - 1 - s->cy)
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ny = screen_size_y(s) - 1 - s->cy;
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if (ny == 0)
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ny = 1;
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if (s->cy < s->rupper || s->cy > s->rlower)
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grid_view_insert_lines(s->grid, s->cy, ny);
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else {
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grid_view_insert_lines_region(
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s->grid, s->rupper, s->rlower, s->cy, ny);
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}
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_INSERTLINE, ny);
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}
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/* Delete ny lines. */
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void
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screen_write_deleteline(struct screen_write_ctx *ctx, u_int ny)
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{
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struct screen *s = ctx->s;
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if (ny > screen_size_y(s) - 1 - s->cy)
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ny = screen_size_y(s) - 1 - s->cy;
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if (ny == 0)
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ny = 1;
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if (s->cy < s->rupper || s->cy > s->rlower)
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grid_view_delete_lines(s->grid, s->cy, ny);
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else {
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grid_view_delete_lines_region(
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s->grid, s->rupper, s->rlower, s->cy, ny);
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}
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_DELETELINE, ny);
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}
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/* Clear line at cursor. */
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void
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screen_write_clearline(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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grid_view_clear(s->grid, 0, s->cy, screen_size_x(s), 1);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARLINE);
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}
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/* Clear to end of line from cursor. */
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void
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screen_write_clearendofline(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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grid_view_clear(s->grid, s->cx, s->cy, screen_size_x(s) - s->cx, 1);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARENDOFLINE);
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}
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/* Clear to start of line from cursor. */
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void
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screen_write_clearstartofline(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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grid_view_clear(s->grid, 0, s->cy, s->cx + 1, 1);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARSTARTOFLINE);
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}
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/* Move cursor to px,py. */
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void
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screen_write_cursormove(struct screen_write_ctx *ctx, u_int px, u_int py)
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{
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struct screen *s = ctx->s;
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if (px > screen_size_x(s) - 1)
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px = screen_size_x(s) - 1;
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if (py > screen_size_y(s) - 1)
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py = screen_size_y(s) - 1;
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s->cx = px;
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s->cy = py;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORMOVE, px, py);
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}
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/* Set cursor mode. */
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void
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screen_write_cursormode(struct screen_write_ctx *ctx, int state)
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{
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struct screen *s = ctx->s;
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if (state)
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s->mode |= MODE_CURSOR;
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else
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s->mode &= ~MODE_CURSOR;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CURSORMODE, state);
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}
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/* Reverse index (up with scroll). */
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void
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screen_write_reverseindex(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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if (s->cy == s->rupper)
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grid_view_scroll_region_down(s->grid, s->rupper, s->rlower);
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else if (s->cy > 0)
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s->cy--;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_REVERSEINDEX);
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}
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/* Set scroll region. */
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void
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screen_write_scrollregion(
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struct screen_write_ctx *ctx, u_int rupper, u_int rlower)
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{
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struct screen *s = ctx->s;
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if (rupper > screen_size_y(s) - 1)
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rupper = screen_size_y(s) - 1;
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if (rlower > screen_size_y(s) - 1)
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rlower = screen_size_y(s) - 1;
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if (rupper > rlower)
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return;
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/* Cursor moves to top-left. */
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s->cx = 0;
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s->cy = rupper;
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s->rupper = rupper;
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s->rlower = rlower;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_SCROLLREGION, rupper, rlower);
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}
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/* Set insert mode. */
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void
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screen_write_insertmode(struct screen_write_ctx *ctx, int state)
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{
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struct screen *s = ctx->s;
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if (state)
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s->mode |= MODE_INSERT;
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else
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s->mode &= ~MODE_INSERT;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_INSERTMODE, state);
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}
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/* Set mouse mode. */
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void
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screen_write_mousemode(struct screen_write_ctx *ctx, int state)
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{
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struct screen *s = ctx->s;
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if (state)
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s->mode |= MODE_MOUSE;
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else
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s->mode &= ~MODE_MOUSE;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_MOUSEMODE, state);
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}
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/* Line feed (down with scroll). */
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void
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screen_write_linefeed(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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if (s->cy == s->rlower)
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grid_view_scroll_region_up(s->grid, s->rupper, s->rlower);
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else if (s->cy < screen_size_x(s) - 1)
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s->cy++;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_LINEFEED);
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}
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/* Carriage return (cursor to start of line). */
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void
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screen_write_carriagereturn(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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s->cx = 0;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CARRIAGERETURN);
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}
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/* Set keypad cursor keys mode. */
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void
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screen_write_kcursormode(struct screen_write_ctx *ctx, int state)
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{
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struct screen *s = ctx->s;
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if (state)
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s->mode |= MODE_KCURSOR;
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else
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s->mode &= ~MODE_KCURSOR;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_KCURSORMODE);
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}
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/* Set keypad number keys mode. */
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void
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screen_write_kkeypadmode(struct screen_write_ctx *ctx, int state)
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{
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struct screen *s = ctx->s;
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if (state)
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s->mode |= MODE_KKEYPAD;
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else
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s->mode &= ~MODE_KKEYPAD;
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_KKEYPADMODE);
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}
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/* Clear to end of screen from cursor. */
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void
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screen_write_clearendofscreen(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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u_int sx, sy;
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sx = screen_size_x(s);
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sy = screen_size_y(s);
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grid_view_clear(s->grid, s->cx, s->cy, sx - s->cx, 1);
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grid_view_clear(s->grid, 0, s->cy + 1, sx, sy - (s->cy + 1));
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARENDOFSCREEN);
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}
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/* Clear to start of screen. */
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void
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screen_write_clearstartofscreen(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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u_int sx, sy;
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sx = screen_size_x(s);
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sy = screen_size_y(s);
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if (s->cy > 0)
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grid_view_clear(s->grid, 0, 0, sx, s->cy - 1);
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grid_view_clear(s->grid, 0, s->cy, s->cx, 1);
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARSTARTOFSCREEN);
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}
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/* Clear entire screen. */
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void
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screen_write_clearscreen(struct screen_write_ctx *ctx)
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{
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struct screen *s = ctx->s;
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grid_view_clear(s->grid, 0, 0, screen_size_x(s), screen_size_y(s));
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if (ctx->write != NULL)
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ctx->write(ctx->data, TTY_CLEARSCREEN);
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}
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/* Write cell data. */
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void
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screen_write_cell(struct screen_write_ctx *ctx, const struct grid_cell *gc)
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{
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struct screen *s = ctx->s;
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struct grid_data *gd = s->grid;
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u_int width, xx;
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const struct grid_cell *hc;
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struct grid_cell *ic, tc;
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width = utf8_width(gc->data);
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/* If the character is wider than the screen, don't print it. */
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if (width > screen_size_x(s)) {
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memcpy(&tc, gc, sizeof tc);
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tc.data = '_';
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width = 1;
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gc = &tc;
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}
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/* Check this will fit on the current line; scroll if not. */
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if (s->cx >= screen_size_x(s) + 1 - width) {
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screen_write_carriagereturn(ctx);
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screen_write_linefeed(ctx);
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}
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/* Sanity checks. */
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if (s->cx > screen_size_x(s) - 1 || s->cy > screen_size_y(s) - 1)
|
|
return;
|
|
|
|
/*
|
|
* UTF-8 wide characters are a bit of an annoyance. They take up more
|
|
* than one cell on the screen, so following cells must not be drawn by
|
|
* marking them as padding.
|
|
*
|
|
* So far, so good. The problem is, when overwriting a padding cell, or
|
|
* a UTF-8 character, it is necessary to also overwrite any other cells
|
|
* which covered by the same character.
|
|
*/
|
|
hc = grid_view_peek_cell(gd, s->cx, s->cy);
|
|
if (hc->flags & GRID_FLAG_PADDING) {
|
|
/*
|
|
* A padding cell, so clear any following and leading padding
|
|
* cells back to the character. Don't overwrite the current
|
|
* cell as that happens later anyway.
|
|
*/
|
|
xx = s->cx;
|
|
while (xx-- > 0) {
|
|
hc = grid_view_peek_cell(gd, xx, s->cy);
|
|
if (!(hc->flags & GRID_FLAG_PADDING))
|
|
break;
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
}
|
|
|
|
/* Overwrite the character at the start of this padding. */
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
|
|
/* Overwrite following padding cells. */
|
|
xx = s->cx;
|
|
while (++xx < screen_size_x(s)) {
|
|
hc = grid_view_peek_cell(gd, xx, s->cy);
|
|
if (!(hc->flags & GRID_FLAG_PADDING))
|
|
break;
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
}
|
|
} else if (utf8_width(hc->data) > 1) {
|
|
/*
|
|
* An UTF-8 wide cell; overwrite following padding cells only.
|
|
*/
|
|
xx = s->cx;
|
|
while (++xx < screen_size_x(s)) {
|
|
hc = grid_view_peek_cell(gd, xx, s->cy);
|
|
if (!(hc->flags & GRID_FLAG_PADDING))
|
|
break;
|
|
grid_view_set_cell(gd, xx, s->cy, &grid_default_cell);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the new character is UTF-8 wide, fill in padding cells. Have
|
|
* already ensured there is enough room.
|
|
*/
|
|
for (xx = s->cx + 1; xx < s->cx + width; xx++) {
|
|
ic = grid_view_get_cell(gd, xx, s->cy);
|
|
ic->flags |= GRID_FLAG_PADDING;
|
|
}
|
|
|
|
/* Write the actual cell. */
|
|
grid_view_set_cell(gd, s->cx, s->cy, gc);
|
|
s->cx += width;
|
|
|
|
if (ctx->write != NULL) {
|
|
if (screen_check_selection(ctx->s, s->cx, s->cy)) {
|
|
memcpy(&tc, gc, sizeof tc);
|
|
tc.attr |= GRID_ATTR_REVERSE;
|
|
ctx->write(ctx->data, TTY_CELL, &tc);
|
|
} else
|
|
ctx->write(ctx->data, TTY_CELL, gc);
|
|
}
|
|
}
|