tmate/screen-write.c

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/* $Id: screen-write.c,v 1.8 2008-06-18 18:52:44 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
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#define screen_write_limit(s, v, lower, upper) do { \
if (v < lower) { \
v = lower; \
SCREEN_DEBUG3(s, v, lower, upper); \
} \
if (v > upper) { \
v = upper; \
SCREEN_DEBUG3(s, v, lower, upper); \
} \
} while (0)
/* Initialise writing with a window. */
void
screen_write_start_window(struct screen_write_ctx *ctx, struct window *w)
{
struct screen *t = w->screen;
screen_write_start(ctx, t, tty_write_window, w);
}
/* Initialise writing with a client. */
void
screen_write_start_client(struct screen_write_ctx *ctx, struct client *c)
{
struct screen *t = c->session->curw->window->screen;
screen_write_start(ctx, t, tty_write_client, c);
}
/* Initialise writing with a session. */
void
screen_write_start_session(struct screen_write_ctx *ctx, struct session *s)
{
struct screen *t = s->curw->window->screen;
screen_write_start(ctx, t, tty_write_session, s);
}
/* Initialise writing. */
void
screen_write_start(struct screen_write_ctx *ctx,
struct screen *s, void (*write)(void *, int, ...), void *data)
{
ctx->write = write;
ctx->data = data;
ctx->s = s;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSOROFF);
}
/* Finalise writing. */
void
screen_write_stop(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
if (ctx->write != NULL && s->mode & MODE_CURSOR)
ctx->write(ctx->data, TTY_CURSORON);
}
/* Set screen title. */
void
screen_write_set_title(struct screen_write_ctx *ctx, char *title)
{
struct screen *s = ctx->s;
xfree(s->title);
s->title = title;
}
/* Put a character. */
void
screen_write_put_character(struct screen_write_ctx *ctx, u_char ch)
{
struct screen *s = ctx->s;
if (s->cx == screen_size_x(s)) {
s->cx = 0;
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if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CHARACTER, '\r');
screen_write_cursor_down_scroll(ctx);
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} else if (!screen_in_x(s, s->cx) || !screen_in_y(s, s->cy)) {
SCREEN_DEBUG(s);
return;
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}
screen_display_set_cell(s, s->cx, s->cy, ch, s->attr, s->colr);
s->cx++;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CHARACTER, ch);
}
/* Put a string right-justified. */
size_t printflike2
screen_write_put_string_rjust(
struct screen_write_ctx *ctx, const char *fmt, ...)
{
struct screen *s = ctx->s;
va_list ap;
size_t size;
char *msg, *ptr;
va_start(ap, fmt);
size = vasprintf(&msg, fmt, ap);
va_end(ap);
ptr = msg;
if (size > screen_size_x(s)) {
ptr += size - screen_size_x(s);
size = screen_size_x(s);
}
screen_write_move_cursor(ctx, screen_size_x(s) - size, s->cy);
for (; *ptr != '\0'; ptr++) {
if (s->cx == screen_size_x(s))
break;
screen_write_put_character(ctx, *ptr);
}
xfree(msg);
return (size);
}
/* Put a string, truncating at end of line. */
void printflike2
screen_write_put_string(struct screen_write_ctx *ctx, const char *fmt, ...)
{
struct screen *s = ctx->s;
va_list ap;
char *msg, *ptr;
va_start(ap, fmt);
vasprintf(&msg, fmt, ap);
va_end(ap);
for (ptr = msg; *ptr != '\0'; ptr++) {
if (s->cx == screen_size_x(s))
break;
screen_write_put_character(ctx, *ptr);
}
xfree(msg);
}
/* Set screen attributes. */
void
screen_write_set_attributes(
struct screen_write_ctx *ctx, u_char attr, u_char colr)
{
struct screen *s = ctx->s;
if (s->attr != attr || s->colr != colr) {
s->attr = attr;
s->colr = colr;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_ATTRIBUTES, attr, colr);
}
}
/* Set scroll region. */
void
screen_write_set_region(struct screen_write_ctx *ctx, u_int upper, u_int lower)
{
struct screen *s = ctx->s;
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screen_write_limit(s, upper, 0, screen_last_y(s));
screen_write_limit(s, lower, 0, screen_last_y(s));
if (upper > lower) {
SCREEN_DEBUG2(s, upper, lower);
return;
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}
/* Cursor moves to top-left. */
s->cx = 0;
s->cy = upper;
s->rupper = upper;
s->rlower = lower;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_SCROLLREGION, s->rupper, s->rlower);
}
/* Move cursor up and scroll if necessary. */
void
screen_write_cursor_up_scroll(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
if (s->cy == s->rupper)
screen_display_scroll_region_down(s);
else if (s->cy > 0)
s->cy--;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_REVERSEINDEX);
}
/* Move cursor down and scroll if necessary */
void
screen_write_cursor_down_scroll(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
if (s->cy == s->rlower)
screen_display_scroll_region_up(s);
else if (s->cy < screen_last_y(s))
s->cy++;
if (ctx->write != NULL) /* XXX FORWARDINDEX */
ctx->write(ctx->data, TTY_CHARACTER, '\n');
}
/* Move cursor up. */
void
screen_write_cursor_up(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_above_y(s, s->cy) - 1);
s->cy -= n;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
/* Move cursor down. */
void
screen_write_cursor_down(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_below_y(s, s->cy) - 1);
s->cy += n;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
/* Move cursor left. */
void
screen_write_cursor_left(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_left_x(s, s->cx) - 1);
s->cx -= n;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
/* Move cursor right. */
void
screen_write_cursor_right(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_right_x(s, s->cx) - 1);
s->cx += n;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
/* Delete lines. */
void
screen_write_delete_lines(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_below_y(s, s->cy));
if (s->cy < s->rupper || s->cy > s->rlower)
screen_display_delete_lines(s, s->cy, n);
else
screen_display_delete_lines_region(s, s->cy, n);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_DELETELINE, n);
}
/* Delete characters. */
void
screen_write_delete_characters(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_right_x(s, s->cx));
screen_display_delete_characters(s, s->cx, s->cy, n);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_DELETECHARACTER, n);
}
/* Insert lines. */
void
screen_write_insert_lines(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_below_y(s, s->cy));
if (s->cy < s->rupper || s->cy > s->rlower)
screen_display_insert_lines(s, s->cy, n);
else
screen_display_insert_lines_region(s, s->cy, n);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_INSERTLINE, n);
}
/* Insert characters. */
void
screen_write_insert_characters(struct screen_write_ctx *ctx, u_int n)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 1, screen_right_x(s, s->cx));
screen_display_insert_characters(s, s->cx, s->cy, n);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_INSERTCHARACTER, n);
}
/* Move the cursor. */
void
screen_write_move_cursor(struct screen_write_ctx *ctx, u_int n, u_int m)
{
struct screen *s = ctx->s;
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screen_write_limit(s, n, 0, screen_last_x(s));
screen_write_limit(s, m, 0, screen_last_y(s));
s->cx = n;
s->cy = m;
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
/* Full to end of screen. */
void
screen_write_fill_end_of_screen(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
u_int i;
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screen_display_fill_area(s, s->cx, s->cy,
screen_right_x(s, s->cx), 1, SCREEN_DEFDATA, s->attr, s->colr);
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screen_display_fill_area(s, 0, s->cy + 1, screen_size_x(s),
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screen_below_y(s, s->cy + 1), SCREEN_DEFDATA, s->attr, s->colr);
if (ctx->write != NULL) {
ctx->write(ctx->data, TTY_CLEARENDOFLINE);
for (i = s->cy + 1; i < screen_size_y(s); i++) {
ctx->write(ctx->data, TTY_CURSORMOVE, i, 0);
ctx->write(ctx->data, TTY_CLEARENDOFLINE);
}
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
}
/* Fill entire screen. */
void
screen_write_fill_screen(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
u_int i;
screen_display_fill_area(s, 0, 0, screen_size_x(s), screen_size_y(s),
SCREEN_DEFDATA, s->attr, s->colr);
if (ctx->write != NULL) {
for (i = 0; i < screen_size_y(s); i++) {
ctx->write(ctx->data, TTY_CURSORMOVE, i, 0);
ctx->write(ctx->data, TTY_CLEARENDOFLINE);
}
ctx->write(ctx->data, TTY_CURSORMOVE, s->cy, s->cx);
}
}
/* Fill to end of line. */
void
screen_write_fill_end_of_line(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
screen_display_fill_area(s, s->cx, s->cy,
screen_right_x(s, s->cx), 1, SCREEN_DEFDATA, s->attr, s->colr);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CLEARENDOFLINE);
}
/* Fill to start of line. */
void
screen_write_fill_start_of_line(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
screen_display_fill_area(s, 0, s->cy,
screen_left_x(s, s->cx), 1, SCREEN_DEFDATA, s->attr, s->colr);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CLEARSTARTOFLINE);
}
/* Fill entire line. */
void
screen_write_fill_line(struct screen_write_ctx *ctx)
{
struct screen *s = ctx->s;
screen_display_fill_area(s, 0, s->cy,
screen_size_x(s), s->cy, SCREEN_DEFDATA, s->attr, s->colr);
if (ctx->write != NULL)
ctx->write(ctx->data, TTY_CLEARLINE);
}
/* Set a screen mode. */
void
screen_write_set_mode(struct screen_write_ctx *ctx, int mode)
{
struct screen *s = ctx->s;
s->mode |= mode;
if (ctx->write == NULL)
return;
if (mode & MODE_INSERT)
ctx->write(ctx->data, TTY_INSERTON);
if (mode & MODE_KCURSOR)
ctx->write(ctx->data, TTY_KCURSORON);
if (mode & MODE_KKEYPAD)
ctx->write(ctx->data, TTY_KKEYPADON);
if (mode & MODE_MOUSE)
ctx->write(ctx->data, TTY_MOUSEON);
}
/* Clear a screen mode. */
void
screen_write_clear_mode(struct screen_write_ctx *ctx, int mode)
{
struct screen *s = ctx->s;
s->mode &= ~mode;
if (ctx->write == NULL)
return;
if (mode & MODE_INSERT)
ctx->write(ctx->data, TTY_INSERTOFF);
if (mode & MODE_KCURSOR)
ctx->write(ctx->data, TTY_KCURSOROFF);
if (mode & MODE_KKEYPAD)
ctx->write(ctx->data, TTY_KKEYPADOFF);
if (mode & MODE_MOUSE)
ctx->write(ctx->data, TTY_MOUSEOFF);
}
/* Copy cells from another screen. */
void
screen_write_copy_area(struct screen_write_ctx *ctx,
struct screen *src, u_int nx, u_int ny, u_int ox, u_int oy)
{
struct screen *s = ctx->s;
struct screen_redraw_ctx rctx;
int saved_mode;
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screen_write_limit(s, nx, 1, screen_right_x(s, s->cx));
screen_write_limit(s, ny, 1, screen_below_y(s, s->cy));
screen_display_copy_area(ctx->s, src, s->cx, s->cy, nx, ny, ox, oy);
if (ctx->write != NULL) {
/* Save mode XXX hack */
saved_mode = ctx->s->mode;
ctx->s->mode &= ~MODE_CURSOR;
screen_redraw_start(&rctx, ctx->s, ctx->write, ctx->data);
screen_redraw_area(&rctx, s->cx, s->cy, nx, ny);
screen_redraw_stop(&rctx);
ctx->s->mode = saved_mode;
}
}