tmux/window-copy.c

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/* $Id: window-copy.c,v 1.1 2007-11-22 18:09:43 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 buffer *, u_int, u_int);
void window_copy_key(struct window *, int);
void window_copy_draw_position(struct window *, struct screen_draw_ctx *);
u_int window_copy_line_length(struct window *);
void window_copy_move_cursor(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_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;
};
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;
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(ctx, screen_size_x(ctx->s) - len, 0);
screen_draw_set_attributes(ctx, 0, status_colour);
buffer_write(ctx->b, ptr, len);
}
void
window_copy_draw(struct window *w, struct buffer *b, u_int py, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen_draw_ctx ctx;
if (s->hsize != data->size) {
data->oy += s->hsize - data->size;
data->size = s->hsize;
}
screen_draw_start(&ctx, s, b, data->ox, data->oy);
if (py != 0)
screen_draw_lines(&ctx, py, ny);
else if (ny > 1)
screen_draw_lines(&ctx, py + 1, ny - 1);
if (py == 0)
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
input_store_two(b, CODE_CURSORMOVE, data->cy + 1, data->cx + 1);
}
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':
w->mode = NULL;
xfree(w->modedata);
w->screen.mode &= ~MODE_BACKGROUND;
recalculate_sizes();
server_redraw_window_all(w);
return;
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;
/* XXX start/end of line, next word, prev word */
}
if (data->oy != oy) {
server_redraw_window_all(w);
window_copy_move_cursor(w);
}
}
void
window_copy_move_cursor(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct client *c;
u_int i;
struct hdr hdr;
size_t size;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
input_store_two(
c->out, CODE_CURSORMOVE, data->cy + 1, data->cx + 1);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
void
window_copy_cursor_left(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
if (data->ox + data->cx == 0)
return;
if (data->cx == 0)
window_copy_scroll_right(w, 1);
else
data->cx--;
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->ox + data->cx == SHRT_MAX)
return;
if (data->cx == screen_last_x(s))
window_copy_scroll_left(w, 1);
else
data->cx++;
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 && data->oy == data->size)
return;
if (data->cy == 0)
window_copy_scroll_down(w, 1);
else
data->cy--;
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) && data->oy == 0)
return;
if (data->cy == screen_last_y(s))
window_copy_scroll_up(w, 1);
else
data->cy++;
window_copy_move_cursor(w);
}
void
window_copy_scroll_left(struct window *w, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen_draw_ctx ctx;
struct client *c;
struct buffer *b;
u_int i, j;
struct hdr hdr;
size_t size;
if (data->ox >= SHRT_MAX - nx)
nx = SHRT_MAX - data->ox;
if (nx == 0)
return;
data->ox += nx;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
b = c->out;
buffer_ensure(b, sizeof hdr);
buffer_add(b, sizeof hdr);
size = BUFFER_USED(b);
screen_draw_start(&ctx, s, b, data->ox, data->oy);
for (j = 1; j < screen_size_y(s); j++) {
screen_draw_move(&ctx, 0, j);
input_store_one(b, CODE_DELETECHARACTER, nx);
}
for (j = 0; j < nx; j++)
screen_draw_column(&ctx, screen_last_x(s) - j);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
size = BUFFER_USED(b) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(b) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
void
window_copy_scroll_right(struct window *w, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen_draw_ctx ctx;
struct client *c;
struct buffer *b;
u_int i, j;
struct hdr hdr;
size_t size;
if (data->ox < nx)
nx = data->ox;
if (nx == 0)
return;
data->ox -= nx;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
b = c->out;
buffer_ensure(b, sizeof hdr);
buffer_add(b, sizeof hdr);
size = BUFFER_USED(b);
screen_draw_start(&ctx, s, b, data->ox, data->oy);
for (j = 1; j < screen_size_y(s); j++) {
screen_draw_move(&ctx, 0, j);
input_store_one(b, CODE_INSERTCHARACTER, nx);
}
for (j = 0; j < nx; j++)
screen_draw_column(&ctx, j);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
size = BUFFER_USED(b) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(b) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
void
window_copy_scroll_up(struct window *w, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen_draw_ctx ctx;
struct client *c;
u_int i;
struct hdr hdr;
size_t size;
if (data->oy < ny)
ny = data->oy;
if (ny == 0)
return;
data->oy -= ny;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
screen_draw_start(&ctx, s, c->out, data->ox, data->oy);
screen_draw_move(&ctx, 0, 0);
input_store_one(c->out, CODE_DELETELINE, ny);
for (i = 0; i < ny; i++)
screen_draw_line(&ctx, screen_last_y(s) - i);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
}
void
window_copy_scroll_down(struct window *w, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen_draw_ctx ctx;
struct client *c;
u_int i;
struct hdr hdr;
size_t size;
if (data->oy >= data->size - ny)
ny = data->size - data->oy;
if (ny == 0)
return;
data->oy += ny;
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if (!session_has(c->session, w))
continue;
buffer_ensure(c->out, sizeof hdr);
buffer_add(c->out, sizeof hdr);
size = BUFFER_USED(c->out);
screen_draw_start(&ctx, s, c->out, data->ox, data->oy);
screen_draw_move(&ctx, 0, 0);
input_store_one(c->out, CODE_INSERTLINE, ny);
for (i = 1; i < ny + 1; i++)
screen_draw_line(&ctx, i);
window_copy_draw_position(w, &ctx);
screen_draw_stop(&ctx);
size = BUFFER_USED(c->out) - size;
hdr.type = MSG_DATA;
hdr.size = size;
memcpy(BUFFER_IN(c->out) - size - sizeof hdr, &hdr, sizeof hdr);
}
}