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/* $Id: window-copy.c,v 1.59 2009-03-31 15:10:43 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"
struct screen *window_copy_init(struct window_pane *);
void window_copy_free(struct window_pane *);
void window_copy_resize(struct window_pane *, u_int, u_int);
void window_copy_key(struct window_pane *, struct client *, int);
void window_copy_mouse(
struct window_pane *, struct client *, u_char, u_char, u_char);
void window_copy_redraw_lines(struct window_pane *, u_int, u_int);
void window_copy_redraw_screen(struct window_pane *);
void window_copy_write_line(
struct window_pane *, struct screen_write_ctx *, u_int);
void window_copy_write_lines(
struct window_pane *, struct screen_write_ctx *, u_int, u_int);
void window_copy_write_column(
struct window_pane *, struct screen_write_ctx *, u_int);
void window_copy_write_columns(
struct window_pane *, struct screen_write_ctx *, u_int, u_int);
void window_copy_update_cursor(struct window_pane *);
void window_copy_start_selection(struct window_pane *);
int window_copy_update_selection(struct window_pane *);
void window_copy_copy_selection(struct window_pane *, struct client *);
void window_copy_copy_line(
struct window_pane *, char **, size_t *, u_int, u_int, u_int);
int window_copy_is_space(struct window_pane *, u_int, u_int);
u_int window_copy_find_length(struct window_pane *, u_int);
void window_copy_cursor_start_of_line(struct window_pane *);
void window_copy_cursor_end_of_line(struct window_pane *);
void window_copy_cursor_left(struct window_pane *);
void window_copy_cursor_right(struct window_pane *);
void window_copy_cursor_up(struct window_pane *);
void window_copy_cursor_down(struct window_pane *);
void window_copy_cursor_next_word(struct window_pane *);
void window_copy_cursor_previous_word(struct window_pane *);
void window_copy_scroll_left(struct window_pane *, u_int);
void window_copy_scroll_right(struct window_pane *, u_int);
void window_copy_scroll_up(struct window_pane *, u_int);
void window_copy_scroll_down(struct window_pane *, u_int);
const struct window_mode window_copy_mode = {
window_copy_init,
window_copy_free,
window_copy_resize,
window_copy_key,
window_copy_mouse,
NULL,
};
struct window_copy_mode_data {
struct screen screen;
struct mode_key_data mdata;
u_int ox;
u_int oy;
u_int selx;
u_int sely;
u_int cx;
u_int cy;
};
struct screen *
window_copy_init(struct window_pane *wp)
{
struct window_copy_mode_data *data;
struct screen *s;
struct screen_write_ctx ctx;
u_int i;
wp->modedata = data = xmalloc(sizeof *data);
data->ox = 0;
data->oy = 0;
data->cx = wp->base.cx;
data->cy = wp->base.cy;
s = &data->screen;
screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
s->mode |= MODE_MOUSE;
mode_key_init(&data->mdata,
options_get_number(&wp->window->options, "mode-keys"), 0);
s->cx = data->cx;
s->cy = data->cy;
screen_write_start(&ctx, NULL, s);
for (i = 0; i < screen_size_y(s); i++)
window_copy_write_line(wp, &ctx, i);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
return (s);
}
void
window_copy_free(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
mode_key_free(&data->mdata);
screen_free(&data->screen);
xfree(data);
}
void
window_copy_pageup(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
if (data->oy + screen_size_y(s) > screen_hsize(&wp->base))
data->oy = screen_hsize(&wp->base);
else
data->oy += screen_size_y(s);
window_copy_update_selection(wp);
window_copy_redraw_screen(wp);
}
void
window_copy_resize(struct window_pane *wp, u_int sx, u_int sy)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
screen_resize(s, sx, sy);
screen_write_start(&ctx, NULL, s);
window_copy_write_lines(wp, &ctx, 0, screen_size_y(s) - 1);
screen_write_stop(&ctx);
window_copy_update_selection(wp);
}
void
window_copy_key(struct window_pane *wp, struct client *c, int key)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
switch (mode_key_lookup(&data->mdata, key)) {
case MODEKEYCMD_QUIT:
window_pane_reset_mode(wp);
break;
case MODEKEYCMD_LEFT:
window_copy_cursor_left(wp);
return;
case MODEKEYCMD_RIGHT:
window_copy_cursor_right(wp);
return;
case MODEKEYCMD_UP:
window_copy_cursor_up(wp);
return;
case MODEKEYCMD_DOWN:
window_copy_cursor_down(wp);
return;
case MODEKEYCMD_PREVIOUSPAGE:
window_copy_pageup(wp);
break;
case MODEKEYCMD_NEXTPAGE:
if (data->oy < screen_size_y(s))
data->oy = 0;
else
data->oy -= screen_size_y(s);
window_copy_update_selection(wp);
window_copy_redraw_screen(wp);
break;
case MODEKEYCMD_STARTSELECTION:
window_copy_start_selection(wp);
break;
case MODEKEYCMD_CLEARSELECTION:
screen_clear_selection(&data->screen);
window_copy_redraw_screen(wp);
break;
case MODEKEYCMD_COPYSELECTION:
if (c != NULL && c->session != NULL) {
window_copy_copy_selection(wp, c);
window_pane_reset_mode(wp);
}
break;
case MODEKEYCMD_STARTOFLINE:
window_copy_cursor_start_of_line(wp);
break;
case MODEKEYCMD_ENDOFLINE:
window_copy_cursor_end_of_line(wp);
break;
case MODEKEYCMD_NEXTWORD:
window_copy_cursor_next_word(wp);
break;
case MODEKEYCMD_PREVIOUSWORD:
window_copy_cursor_previous_word(wp);
break;
default:
break;
}
}
void
window_copy_mouse(struct window_pane *wp,
unused struct client *c, u_char b, u_char x, u_char y)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
if ((b & 3) == 3)
return;
if (x >= screen_size_x(s))
return;
if (y >= screen_size_y(s))
return;
data->cx = x;
data->cy = y;
if (window_copy_update_selection(wp))
window_copy_redraw_screen(wp);
window_copy_update_cursor(wp);
}
void
window_copy_write_line(struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct grid_cell gc;
char hdr[32];
size_t size;
if (py == 0) {
memcpy(&gc, &grid_default_cell, sizeof gc);
size = xsnprintf(hdr, sizeof hdr,
"[%u,%u/%u]", data->ox, data->oy, screen_hsize(&wp->base));
gc.bg = options_get_number(&wp->window->options, "mode-fg");
gc.fg = options_get_number(&wp->window->options, "mode-bg");
gc.attr |= options_get_number(&wp->window->options, "mode-attr");
screen_write_cursormove(ctx, screen_size_x(s) - size, 0);
screen_write_puts(ctx, &gc, "%s", hdr);
} else
size = 0;
screen_write_cursormove(ctx, 0, py);
screen_write_copy(ctx, &wp->base, data->ox, (screen_hsize(&wp->base) -
data->oy) + py, screen_size_x(s) - size, 1);
}
void
window_copy_write_lines(
struct window_pane *wp, struct screen_write_ctx *ctx, u_int py, u_int ny)
{
u_int yy;
for (yy = py; yy < py + ny; yy++)
window_copy_write_line(wp, ctx, py);
}
void
window_copy_write_column(
struct window_pane *wp, struct screen_write_ctx *ctx, u_int px)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
screen_write_cursormove(ctx, px, 0);
screen_write_copy(ctx, &wp->base,
data->ox + px, screen_hsize(&wp->base) - data->oy, 1, screen_size_y(s));
}
void
window_copy_write_columns(
struct window_pane *wp, struct screen_write_ctx *ctx, u_int px, u_int nx)
{
u_int xx;
for (xx = px; xx < px + nx; xx++)
window_copy_write_column(wp, ctx, xx);
}
void
window_copy_redraw_lines(struct window_pane *wp, u_int py, u_int ny)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen_write_ctx ctx;
u_int i;
screen_write_start(&ctx, wp, NULL);
for (i = py; i < py + ny; i++)
window_copy_write_line(wp, &ctx, i);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_redraw_screen(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
window_copy_redraw_lines(wp, 0, screen_size_y(&data->screen));
}
void
window_copy_update_cursor(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen_write_ctx ctx;
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_start_selection(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
data->selx = data->cx + data->ox;
data->sely = screen_hsize(&wp->base) + data->cy - data->oy;
s->sel.flag = 1;
window_copy_update_selection(wp);
}
int
window_copy_update_selection(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct grid_cell gc;
u_int sx, sy, tx, ty;
if (!s->sel.flag)
return (0);
/* Set colours. */
memcpy(&gc, &grid_default_cell, sizeof gc);
gc.bg = options_get_number(&wp->window->options, "mode-fg");
gc.fg = options_get_number(&wp->window->options, "mode-bg");
gc.attr |= options_get_number(&wp->window->options, "mode-attr");
/* Find top-left of screen. */
tx = data->ox;
ty = screen_hsize(&wp->base) - data->oy;
/* Adjust the selection. */
sx = data->selx;
sy = data->sely;
if (sy < ty) {
/* Above it. */
sx = 0;
sy = 0;
} else if (sy > ty + screen_size_y(s) - 1) {
/* Below it. */
sx = screen_size_x(s) - 1;
sy = screen_size_y(s) - 1;
} else if (sx < tx) {
/* To the left. */
sx = 0;
} else if (sx > tx + screen_size_x(s) - 1) {
/* To the right. */
sx = 0;
sy++;
if (sy > screen_size_y(s) - 1)
sy = screen_size_y(s) - 1;
} else {
sx -= tx;
sy -= ty;
}
sy = screen_hsize(s) + sy;
screen_set_selection(
s, sx, sy, data->cx, screen_hsize(s) + data->cy, &gc);
return (1);
}
void
window_copy_copy_selection(struct window_pane *wp, struct client *c)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
char *buf;
size_t off;
u_int i, xx, yy, sx, sy, ex, ey, limit;
if (!s->sel.flag)
return;
buf = xmalloc(1);
off = 0;
*buf = '\0';
/*
* The selection extends from selx,sely to (adjusted) cx,cy on
* the base screen.
*/
/* Find start and end. */
xx = data->cx + data->ox;
yy = screen_hsize(&wp->base) + 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(wp, ey);
if (ex > xx)
ex = xx;
/* Copy the lines. */
if (sy == ey)
window_copy_copy_line(wp, &buf, &off, sy, sx, ex);
else {
xx = window_copy_find_length(wp, sy);
window_copy_copy_line(wp, &buf, &off, sy, sx, xx);
if (ey - sy > 1) {
for (i = sy + 1; i < ey - 1; i++) {
xx = window_copy_find_length(wp, i);
window_copy_copy_line(wp, &buf, &off, i, 0, xx);
}
}
window_copy_copy_line(wp, &buf, &off, ey, 0, ex);
}
/* Terminate buffer, overwriting final \n. */
if (off != 0)
buf[off - 1] = '\0';
/* Add the buffer to the stack. */
limit = options_get_number(&c->session->options, "buffer-limit");
paste_add(&c->session->buffers, buf, limit);
}
void
window_copy_copy_line(struct window_pane *wp,
char **buf, size_t *off, u_int sy, u_int sx, u_int ex)
{
const struct grid_cell *gc;
const struct grid_utf8 *gu;
u_int i, j, xx;
if (sx > ex)
return;
xx = window_copy_find_length(wp, sy);
if (ex > xx)
ex = xx;
if (sx > xx)
sx = xx;
if (sx < ex) {
for (i = sx; i < ex; i++) {
gc = grid_peek_cell(wp->base.grid, i, sy);
if (gc->flags & GRID_FLAG_PADDING)
continue;
if (!(gc->flags & GRID_FLAG_UTF8)) {
*buf = xrealloc(*buf, 1, (*off) + 1);
(*buf)[(*off)++] = gc->data;
} else {
gu = grid_peek_utf8(wp->base.grid, i, sy);
*buf = xrealloc(*buf, 1, (*off) + UTF8_SIZE);
for (j = 0; j < UTF8_SIZE; j++) {
if (gu->data[j] == 0xff)
break;
(*buf)[(*off)++] = gu->data[j];
}
}
}
}
*buf = xrealloc(*buf, 1, (*off) + 1);
(*buf)[*off] = '\n';
(*off)++;
}
int
window_copy_is_space(struct window_pane *wp, u_int px, u_int py)
{
const struct grid_cell *gc;
const char *spaces = " -_@";
gc = grid_peek_cell(wp->base.grid, px, py);
if (gc->flags & (GRID_FLAG_PADDING|GRID_FLAG_UTF8))
return (0);
if (gc->data == 0x00 || gc->data == 0x7f)
return (0);
return (strchr(spaces, gc->data) != NULL);
}
u_int
window_copy_find_length(struct window_pane *wp, u_int py)
{
const struct grid_cell *gc;
u_int px;
px = wp->base.grid->size[py];
while (px > 0) {
gc = grid_peek_cell(wp->base.grid, px - 1, py);
if (gc->flags & GRID_FLAG_UTF8)
break;
if (gc->data != ' ')
break;
px--;
}
return (px);
}
void
window_copy_cursor_start_of_line(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
if (data->ox != 0)
window_copy_scroll_right(wp, data->ox);
data->cx = 0;
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
void
window_copy_cursor_end_of_line(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
u_int px, py;
py = screen_hsize(&wp->base) + data->cy - data->oy;
px = window_copy_find_length(wp, py);
/* On screen. */
if (px > data->ox && px <= data->ox + screen_size_x(s) - 1)
data->cx = px - data->ox;
/* Off right of screen. */
if (px > data->ox + screen_size_x(s) - 1) {
/* Move cursor to last and scroll screen. */
window_copy_scroll_left(
wp, px - data->ox - (screen_size_x(s) - 1));
data->cx = screen_size_x(s) - 1;
}
/* Off left of screen. */
if (px <= data->ox) {
if (px < screen_size_x(s) - 1) {
/* Short enough to fit on screen. */
window_copy_scroll_right(wp, data->ox);
data->cx = px;
} else {
/* Too long to fit on screen. */
window_copy_scroll_right(
wp, data->ox - (px - (screen_size_x(s) - 1)));
data->cx = screen_size_x(s) - 1;
}
}
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
void
window_copy_cursor_left(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
if (data->cx == 0) {
if (data->ox > 0)
window_copy_scroll_right(wp, 1);
else {
window_copy_cursor_up(wp);
window_copy_cursor_end_of_line(wp);
}
} else {
data->cx--;
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
}
void
window_copy_cursor_right(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
u_int px, py;
py = screen_hsize(&wp->base) + data->cy - data->oy;
px = window_copy_find_length(wp, py);
if (data->cx >= px) {
window_copy_cursor_start_of_line(wp);
window_copy_cursor_down(wp);
} else {
data->cx++;
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
}
void
window_copy_cursor_up(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
u_int ox, oy, px, py;
oy = screen_hsize(&wp->base) + data->cy - data->oy;
ox = window_copy_find_length(wp, oy);
if (data->cy == 0)
window_copy_scroll_down(wp, 1);
else {
data->cy--;
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 2);
else
window_copy_update_cursor(wp);
}
py = screen_hsize(&wp->base) + data->cy - data->oy;
px = window_copy_find_length(wp, py);
if (data->cx + data->ox >= px || data->cx + data->ox >= ox)
window_copy_cursor_end_of_line(wp);
}
void
window_copy_cursor_down(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
u_int ox, oy, px, py;
oy = screen_hsize(&wp->base) + data->cy - data->oy;
ox = window_copy_find_length(wp, oy);
if (data->cy == screen_size_y(s) - 1)
window_copy_scroll_up(wp, 1);
else {
data->cy++;
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy - 1, 2);
else
window_copy_update_cursor(wp);
}
py = screen_hsize(&wp->base) + data->cy - data->oy;
px = window_copy_find_length(wp, py);
if (data->cx + data->ox >= px || data->cx + data->ox >= ox)
window_copy_cursor_end_of_line(wp);
}
void
window_copy_cursor_next_word(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
u_int px, py, xx, skip;
px = data->ox + data->cx;
py = screen_hsize(&wp->base) + data->cy - data->oy;
xx = window_copy_find_length(wp, py);
skip = 1;
if (px < xx) {
/* If currently on a space, skip space. */
if (window_copy_is_space(wp, px, py))
skip = 0;
} else
skip = 0;
for (;;) {
if (px >= xx) {
if (skip) {
px = xx;
break;
}
while (px >= xx) {
if (data->cy == screen_size_y(s) - 1) {
if (data->oy == 0)
goto out;
}
px = 0;
window_copy_cursor_down(wp);
py =screen_hsize(
&wp->base) + data->cy - data->oy;
xx = window_copy_find_length(wp, py);
}
}
if (skip) {
/* Currently skipping non-space (until space). */
if (window_copy_is_space(wp, px, py))
break;
} else {
/* Currently skipping space (until non-space). */
if (!window_copy_is_space(wp, px, py))
skip = 1;
}
px++;
}
out:
/* On screen. */
if (px > data->ox && px <= data->ox + screen_size_x(s) - 1)
data->cx = px - data->ox;
/* Off right of screen. */
if (px > data->ox + screen_size_x(s) - 1) {
/* Move cursor to last and scroll screen. */
window_copy_scroll_left(
wp, px - data->ox - (screen_size_x(s) - 1));
data->cx = screen_size_x(s) - 1;
}
/* Off left of screen. */
if (px <= data->ox) {
if (px < screen_size_x(s) - 1) {
/* Short enough to fit on screen. */
window_copy_scroll_right(wp, data->ox);
data->cx = px;
} else {
/* Too long to fit on screen. */
window_copy_scroll_right(
wp, data->ox - (px - (screen_size_x(s) - 1)));
data->cx = screen_size_x(s) - 1;
}
}
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
void
window_copy_cursor_previous_word(struct window_pane *wp)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
u_int ox, px, py, skip;
ox = px = data->ox + data->cx;
py = screen_hsize(&wp->base) + data->cy - data->oy;
skip = 1;
if (px != 0) {
/* If currently on a space, skip space. */
if (window_copy_is_space(wp, px - 1, py))
skip = 0;
}
for (;;) {
if (px == 0) {
if (ox != 0)
break;
while (px == 0) {
if (data->cy == 0 &&
(screen_hsize(&wp->base) == 0 ||
data->oy >= screen_hsize(&wp->base) - 1))
goto out;
window_copy_cursor_up(wp);
py = screen_hsize(
&wp->base) + data->cy - data->oy;
px = window_copy_find_length(wp, py);
}
goto out;
}
if (skip) {
/* Currently skipping non-space (until space). */
if (window_copy_is_space(wp, px - 1, py))
skip = 0;
} else {
/* Currently skipping space (until non-space). */
if (!window_copy_is_space(wp, px - 1, py))
break;
}
px--;
}
out:
/* On screen. */
if (px > data->ox && px <= data->ox + screen_size_x(s) - 1)
data->cx = px - data->ox;
/* Off right of screen. */
if (px > data->ox + screen_size_x(s) - 1) {
/* Move cursor to last and scroll screen. */
window_copy_scroll_left(
wp, px - data->ox - (screen_size_x(s) - 1));
data->cx = screen_size_x(s) - 1;
}
/* Off left of screen. */
if (px <= data->ox) {
if (px < screen_size_x(s) - 1) {
/* Short enough to fit on screen. */
window_copy_scroll_right(wp, data->ox);
data->cx = px;
} else {
/* Too long to fit on screen. */
window_copy_scroll_right(
wp, data->ox - (px - (screen_size_x(s) - 1)));
data->cx = screen_size_x(s) - 1;
}
}
if (window_copy_update_selection(wp))
window_copy_redraw_lines(wp, data->cy, 1);
else
window_copy_update_cursor(wp);
}
void
window_copy_scroll_left(struct window_pane *wp, u_int nx)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
if (data->ox > SHRT_MAX - nx)
nx = SHRT_MAX - data->ox;
if (nx == 0)
return;
data->ox += nx;
window_copy_update_selection(wp);
screen_write_start(&ctx, wp, NULL);
for (i = 1; i < screen_size_y(s); i++) {
screen_write_cursormove(&ctx, 0, i);
screen_write_deletecharacter(&ctx, nx);
}
window_copy_write_columns(wp, &ctx, screen_size_x(s) - nx, nx);
window_copy_write_line(wp, &ctx, 0);
if (s->sel.flag) {
window_copy_update_selection(wp);
window_copy_write_lines(wp, &ctx, data->cy, 1);
}
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_scroll_right(struct window_pane *wp, u_int nx)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
if (data->ox < nx)
nx = data->ox;
if (nx == 0)
return;
data->ox -= nx;
window_copy_update_selection(wp);
screen_write_start(&ctx, wp, NULL);
for (i = 1; i < screen_size_y(s); i++) {
screen_write_cursormove(&ctx, 0, i);
screen_write_insertcharacter(&ctx, nx);
}
window_copy_write_columns(wp, &ctx, 0, nx);
window_copy_write_line(wp, &ctx, 0);
if (s->sel.flag)
window_copy_write_line(wp, &ctx, data->cy);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_scroll_up(struct window_pane *wp, u_int ny)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
if (data->oy < ny)
ny = data->oy;
if (ny == 0)
return;
data->oy -= ny;
window_copy_update_selection(wp);
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_deleteline(&ctx, ny);
window_copy_write_lines(wp, &ctx, screen_size_y(s) - ny, ny);
window_copy_write_line(wp, &ctx, 0);
window_copy_write_line(wp, &ctx, 1);
if (s->sel.flag && screen_size_y(s) > ny)
window_copy_write_line(wp, &ctx, screen_size_y(s) - ny - 1);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_scroll_down(struct window_pane *wp, u_int ny)
{
struct window_copy_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
if (ny > screen_hsize(&wp->base))
return;
if (data->oy > screen_hsize(&wp->base) - ny)
ny = screen_hsize(&wp->base) - data->oy;
if (ny == 0)
return;
data->oy += ny;
window_copy_update_selection(wp);
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_insertline(&ctx, ny);
window_copy_write_lines(wp, &ctx, 0, ny);
if (s->sel.flag && screen_size_y(s) > ny)
window_copy_write_line(wp, &ctx, ny);
else if (ny == 1) /* nuke position */
window_copy_write_line(wp, &ctx, 1);
screen_write_cursormove(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}