tmux/window-copy.c
2007-11-27 19:43:50 +00:00

564 lines
13 KiB
C

/* $Id: window-copy.c,v 1.12 2007-11-27 19:43:50 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"
void window_copy_init(struct window *);
void window_copy_resize(struct window *, u_int, u_int);
void window_copy_draw(
struct window *, struct screen_draw_ctx *, u_int, u_int);
void window_copy_key(struct window *, int);
void window_copy_draw_position(struct window *, struct screen_draw_ctx *);
void window_copy_copy_selection(struct window *);
void window_copy_copy_line(
struct window *, char **, size_t *, size_t *, u_int, u_int, u_int);
u_int window_copy_find_length(struct window *, u_int);
void window_copy_move_cursor(struct window *);
void window_copy_cursor_bol(struct window *);
void window_copy_cursor_eol(struct window *);
void window_copy_cursor_left(struct window *);
void window_copy_cursor_right(struct window *);
void window_copy_cursor_up(struct window *);
void window_copy_cursor_down(struct window *);
void window_copy_draw_lines(struct window *, u_int, u_int);
void window_copy_scroll_left(struct window *, u_int);
void window_copy_scroll_right(struct window *, u_int);
void window_copy_scroll_up(struct window *, u_int);
void window_copy_scroll_down(struct window *, u_int);
const struct window_mode window_copy_mode = {
window_copy_init,
window_copy_resize,
window_copy_draw,
window_copy_key
};
struct window_copy_mode_data {
u_int ox;
u_int oy;
u_int cx;
u_int cy;
u_int size;
int selflag;
u_int selx;
u_int sely;
};
void
window_copy_init(struct window *w)
{
struct window_copy_mode_data *data;
w->modedata = data = xmalloc(sizeof *data);
data->ox = data->oy = 0;
data->cx = w->screen.cx;
data->cy = w->screen.cy;
data->size = w->screen.hsize;
data->selflag = 0;
w->screen.mode |= (MODE_BACKGROUND|MODE_BGCURSOR);
}
void
window_copy_resize(unused struct window *w, unused u_int sx, unused u_int sy)
{
}
void
window_copy_draw_position(struct window *w, struct screen_draw_ctx *ctx)
{
struct window_copy_mode_data *data = w->modedata;
char *ptr, buf[32];
size_t len;
len = xsnprintf(
buf, sizeof buf, "[%u,%u/%u]", data->ox, data->oy, data->size);
if (len <= screen_size_x(ctx->s))
ptr = buf;
else {
ptr = buf + len - screen_size_x(ctx->s);
len -= len - screen_size_x(ctx->s);
}
screen_draw_cells(ctx, 0, 0, screen_size_x(ctx->s) - len);
screen_draw_move_cursor(ctx, screen_size_x(ctx->s) - len, 0);
screen_draw_set_attributes(ctx, 0, status_colour);
screen_draw_write_string(ctx, "%s", ptr);
}
void
window_copy_draw(
struct window *w, struct screen_draw_ctx *ctx, u_int py, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
if (s->hsize != data->size) {
data->oy += s->hsize - data->size;
data->size = s->hsize;
}
screen_draw_set_offset(ctx, data->ox, data->oy);
screen_draw_set_selection(ctx,
data->selflag, data->selx, data->sely,
data->cx + data->ox, data->size + data->cy - data->oy);
if (py != 0)
screen_draw_lines(ctx, py, ny);
else {
if (ny > 1)
screen_draw_lines(ctx, py + 1, ny - 1);
window_copy_draw_position(w, ctx);
}
window_copy_move_cursor(w);
}
void
window_copy_key(struct window *w, int key)
{
struct window_copy_mode_data *data = w->modedata;
u_int oy, sy;
sy = screen_size_y(&w->screen);
oy = data->oy;
switch (key) {
case 'Q':
case 'q':
goto done;
case 'h':
case KEYC_LEFT:
window_copy_cursor_left(w);
return;
case 'l':
case KEYC_RIGHT:
window_copy_cursor_right(w);
return;
case 'k':
case 'K':
case KEYC_UP:
window_copy_cursor_up(w);
return;
case 'j':
case 'J':
case KEYC_DOWN:
window_copy_cursor_down(w);
return;
case '\025': /* C-u */
case KEYC_PPAGE:
if (data->oy + sy > data->size)
data->oy = data->size;
else
data->oy += sy;
break;
case '\006': /* C-f */
case KEYC_NPAGE:
if (data->oy < sy)
data->oy = 0;
else
data->oy -= sy;
break;
case '\000': /* C-space */
case ' ':
data->selflag = !data->selflag;
data->selx = data->cx + data->ox;
data->sely = data->size + data->cy - data->oy;
oy = -1; /* XXX */
break;
case '\033':
data->selflag = 0;
oy = -1; /* XXX */
break;
case '\027': /* C-w */
case '\r': /* enter */
if (data->selflag)
window_copy_copy_selection(w);
goto done;
case '\001': /* C-a */
window_copy_cursor_bol(w);
return;
case '\005': /* C-e */
window_copy_cursor_eol(w);
return;
}
if (data->oy != oy) {
server_redraw_window(w);
window_copy_move_cursor(w);
}
return;
done:
w->mode = NULL;
xfree(w->modedata);
w->screen.mode &= ~MODE_BACKGROUND;
recalculate_sizes();
server_redraw_window(w);
}
void
window_copy_copy_selection(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
char *buf;
size_t len, off;
u_int i, xx, yy, sx, sy, ex, ey;
len = BUFSIZ;
buf = xmalloc(len);
off = 0;
*buf = '\0';
/* Find start and end. */
xx = data->cx + data->ox;
yy = data->size + data->cy - data->oy;
if (xx < data->selx || (yy == data->sely && xx < data->selx)) {
sx = xx; sy = yy;
ex = data->selx; ey = data->sely;
} else {
sx = data->selx; sy = data->sely;
ex = xx; ey = yy;
}
/* Trim ex to end of line. */
xx = window_copy_find_length(w, ey);
if (ex > xx)
ex = xx;
log_debug("copying from %u,%u to %u,%u", sx, sy, ex, ey);
/* Copy the lines. */
if (sy == ey)
window_copy_copy_line(w, &buf, &off, &len, sy, sx, ex);
else {
xx = window_copy_find_length(w, sy);
window_copy_copy_line(w, &buf, &off, &len, sy, sx, xx);
if (ey - sy > 1) {
for (i = sy + 1; i < ey - 1; i++) {
xx = window_copy_find_length(w, i);
window_copy_copy_line(
w, &buf, &off, &len, i, 0, xx);
}
}
window_copy_copy_line(w, &buf, &off, &len, ey, 0, ex);
}
/* Terminate buffer, overwriting final \n. */
if (off != 0)
buf[off - 1] = '\0';
if (paste_buffer != NULL)
xfree(paste_buffer);
paste_buffer = buf;
}
void
window_copy_copy_line(struct window *w,
char **buf, size_t *off, size_t *len, u_int sy, u_int sx, u_int ex)
{
struct screen *s = &w->screen;
u_char i, xx;
if (sx > ex)
return;
xx = window_copy_find_length(w, sy);
if (ex > xx)
ex = xx;
if (sx > xx)
sx = xx;
if (sx < ex) {
for (i = sx; i < ex; i++) {
*buf = ensure_size(*buf, len, 1, *off + 1);
(*buf)[*off] = s->grid_data[sy][i];
(*off)++;
}
}
*buf = ensure_size(*buf, len, 1, *off + 1);
(*buf)[*off] = '\n';
(*off)++;
}
u_int
window_copy_find_length(struct window *w, u_int py)
{
struct screen *s = &w->screen;
u_int px;
px = s->grid_size[py];
while (px > 0 && s->grid_data[py][px - 1] == SCREEN_DEFDATA)
px--;
return (px);
}
void
window_copy_move_cursor(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
tty_write_window(w, TTY_CURSORMOVE, data->cy, data->cx);
}
void
window_copy_cursor_bol(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
if (data->ox != 0)
window_copy_scroll_right(w, data->ox);
data->cx = 0;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
window_copy_move_cursor(w);
}
void
window_copy_cursor_eol(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
u_int xx;
xx = window_copy_find_length(w, data->size + data->cy - data->oy);
/* On screen. */
if (xx > data->ox && xx < data->ox + screen_last_x(s))
data->cx = xx - data->ox;
/* Off right of screen. */
if (xx > data->ox + screen_last_x(s)) {
/* Move cursor to last and scroll screen. */
window_copy_scroll_left(w,
xx - data->ox - screen_last_x(s));
data->cx = screen_last_x(s);
}
/* Off left of screen. */
if (xx <= data->ox) {
if (xx < screen_last_x(s)) {
/* Short enough to fit on screen. */
window_copy_scroll_right(w, data->ox);
data->cx = xx;
} else {
/* Too long to fit on screen. */
window_copy_scroll_right(
w, data->ox - (xx - screen_last_x(s)));
data->cx = screen_last_x(s);
}
}
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
window_copy_move_cursor(w);
}
void
window_copy_cursor_left(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
if (data->cx == 0)
window_copy_scroll_right(w, 1);
else {
data->cx--;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
}
window_copy_move_cursor(w);
}
void
window_copy_cursor_right(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
if (data->cx == screen_last_x(s))
window_copy_scroll_left(w, 1);
else {
data->cx++;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
}
window_copy_move_cursor(w);
}
void
window_copy_cursor_up(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
if (data->cy == 0)
window_copy_scroll_down(w, 1);
else {
data->cy--;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 2);
}
window_copy_move_cursor(w);
}
void
window_copy_cursor_down(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
if (data->cy == screen_last_y(s))
window_copy_scroll_up(w, 1);
else {
data->cy++;
if (data->selflag)
window_copy_draw_lines(w, data->cy - 1, 2);
}
window_copy_move_cursor(w);
}
void
window_copy_draw_lines(struct window *w, u_int py, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
screen_draw_start_window(&ctx, w, data->ox, data->oy);
window_copy_draw(w, &ctx, py, ny);
screen_draw_stop(&ctx);
}
void
window_copy_scroll_left(struct window *w, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
u_int i;
if (data->ox > SHRT_MAX - nx)
nx = SHRT_MAX - data->ox;
if (nx == 0)
return;
data->ox += nx;
screen_draw_start_window(&ctx, w, data->ox, data->oy);
screen_draw_set_selection(&ctx,
data->selflag, data->selx, data->sely,
data->cx + data->ox, data->size + data->cy - data->oy);
for (i = 1; i < screen_size_y(&w->screen); i++) {
screen_draw_move_cursor(&ctx, 0, i);
screen_draw_delete_characters(&ctx, nx);
}
for (i = 0; i < nx; i++)
screen_draw_column(&ctx, screen_last_x(&w->screen) - i);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
}
void
window_copy_scroll_right(struct window *w, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
u_int i;
if (data->ox < nx)
nx = data->ox;
if (nx == 0)
return;
data->ox -= nx;
screen_draw_start_window(&ctx, w, data->ox, data->oy);
screen_draw_set_selection(&ctx,
data->selflag, data->selx, data->sely,
data->cx + data->ox, data->size + data->cy - data->oy);
for (i = 1; i < screen_size_y(&w->screen); i++) {
screen_draw_move_cursor(&ctx, 0, i);
screen_draw_insert_characters(&ctx, nx);
}
for (i = 0; i < nx; i++)
screen_draw_column(&ctx, i);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
}
void
window_copy_scroll_up(struct window *w, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
u_int i;
if (data->oy < ny)
ny = data->oy;
if (ny == 0)
return;
data->oy -= ny;
screen_draw_start_window(&ctx, w, data->ox, data->oy);
screen_draw_set_selection(&ctx,
data->selflag, data->selx, data->sely,
data->cx + data->ox, data->size + data->cy - data->oy);
screen_draw_move_cursor(&ctx, 0, 0);
screen_draw_delete_lines(&ctx, ny);
for (i = 0; i < ny; i++)
screen_draw_line(&ctx, screen_last_y(&w->screen) - i);
if (data->selflag)
screen_draw_line(&ctx, screen_last_y(&w->screen) - ny);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
}
void
window_copy_scroll_down(struct window *w, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
u_int i;
if (ny > data->size)
return;
if (data->oy > data->size - ny)
ny = data->size - data->oy;
if (ny == 0)
return;
data->oy += ny;
screen_draw_start_window(&ctx, w, data->ox, data->oy);
screen_draw_set_selection(&ctx,
data->selflag, data->selx, data->sely,
data->cx + data->ox, data->size + data->cy - data->oy);
screen_draw_move_cursor(&ctx, 0, 0);
screen_draw_insert_lines(&ctx, ny);
for (i = 1; i < ny + 1; i++)
screen_draw_line(&ctx, i);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
}