circlecloud/tmux
1
0
Fork 0
mirror of https://github.com/tmux/tmux.git synced 2025-09-04 15:26:58 +00:00
Code Issues Projects Releases Wiki Activity

Major reorganisation of screen handling.

Browse Source
This commit is contained in:
Nicholas Marriott
2007-12-06 09:46:23 +00:00
parent 6f142e9ac6
commit 103748d6ad
52 changed files with 2084 additions and 1538 deletions
Download Patch File Download Diff File Expand all files Collapse all files

601
window-copy.c
View File

@ -1,4 +1,4 @@
/* $Id: window-copy.c,v 1.12 2007-11-27 19:43:50 nicm Exp $ */
/* $Id: window-copy.c,v 1.13 2007-12-06 09:46:23 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -23,25 +23,34 @@
#include "tmux.h"
void window_copy_init(struct window *);
void window_copy_free(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_redraw_lines(struct window *, u_int, u_int);
void window_copy_redraw_screen(struct window *);
void window_copy_write_line(
struct window *, struct screen_write_ctx *, u_int);
void window_copy_write_lines(
struct window *, struct screen_write_ctx *, u_int, u_int);
void window_copy_write_column(
struct window *, struct screen_write_ctx *, u_int);
void window_copy_write_columns(
struct window *, struct screen_write_ctx *, u_int, u_int);
void window_copy_update_cursor(struct window *);
void window_copy_start_selection(struct window *);
int window_copy_update_selection(struct window *);
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);
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_start_of_line(struct window *);
void window_copy_cursor_end_of_line(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);
@ -49,106 +58,87 @@ void window_copy_scroll_down(struct window *, u_int);
const struct window_mode window_copy_mode = {
window_copy_init,
window_copy_free,
window_copy_resize,
window_copy_draw,
window_copy_key
};
struct window_copy_mode_data {
struct screen screen;
u_int ox;
u_int oy;
u_int cx;
u_int cy;
u_int size;
int selflag;
u_int selx;
u_int sely;
u_int cx;
u_int cy;
};
void
window_copy_init(struct window *w)
{
struct window_copy_mode_data *data;
struct screen *s;
struct screen_write_ctx ctx;
u_int i;
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);
data->ox = 0;
data->oy = 0;
data->cx = w->base.cx;
data->cy = w->base.cy;
s = &data->screen;
screen_create(s, screen_size_x(&w->base), screen_size_y(&w->base));
s->cx = data->cx;
s->cy = data->cy;
w->screen = s;
screen_write_start(&ctx, s, NULL, NULL);
for (i = 0; i < screen_size_y(s); i++)
window_copy_write_line(w, &ctx, i);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
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)
window_copy_free(struct window *w)
{
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);
w->screen = &w->base;
screen_destroy(&data->screen);
w->mode = NULL;
xfree(w->modedata);
}
void
window_copy_draw(
struct window *w, struct screen_draw_ctx *ctx, u_int py, u_int ny)
window_copy_resize(struct window *w, u_int sx, u_int sy)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen *s = &data->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);
screen_resize(s, sx, sy);
screen_display_copy_area(&data->screen, &w->base,
0, 0, screen_size_x(s), screen_size_y(s), data->ox, data->oy);
window_copy_update_selection(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;
struct screen *s = &data->screen;
switch (key) {
case 'Q':
case 'q':
goto done;
window_copy_free(w);
server_redraw_window(w);
break;
case 'h':
case KEYC_LEFT:
window_copy_cursor_left(w);
@ -169,55 +159,199 @@ window_copy_key(struct window *w, int key)
return;
case '\025': /* C-u */
case KEYC_PPAGE:
if (data->oy + sy > data->size)
data->oy = data->size;
if (data->oy + screen_size_y(s) > w->base.hsize)
data->oy = w->base.hsize;
else
data->oy += sy;
data->oy += screen_size_y(s);
window_copy_update_selection(w);
window_copy_redraw_screen(w);
break;
case '\006': /* C-f */
case KEYC_NPAGE:
if (data->oy < sy)
if (data->oy < screen_size_y(s))
data->oy = 0;
else
data->oy -= sy;
data->oy -= screen_size_y(s);
window_copy_update_selection(w);
window_copy_redraw_screen(w);
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 */
window_copy_start_selection(w);
break;
case '\033':
data->selflag = 0;
oy = -1; /* XXX */
break;
screen_clear_selection(&data->screen);
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) {
window_copy_copy_selection(w);
window_copy_free(w);
server_redraw_window(w);
window_copy_move_cursor(w);
break;
case '\001': /* C-a */
window_copy_cursor_start_of_line(w);
break;
case '\005': /* C-e */
window_copy_cursor_end_of_line(w);
break;
}
return;
}
done:
w->mode = NULL;
xfree(w->modedata);
w->screen.mode &= ~MODE_BACKGROUND;
recalculate_sizes();
server_redraw_window(w);
void
window_copy_write_line(
struct window *w, struct screen_write_ctx *ctx, u_int py)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
size_t size;
if (py == 0) {
screen_write_set_attributes(ctx, 0, status_colour);
screen_write_move_cursor(ctx, 0, 0);
size = screen_write_put_string_rjust(
ctx, "[%u,%u/%u]", data->ox, data->oy, w->base.hsize);
screen_write_set_attributes(
ctx, SCREEN_DEFATTR, SCREEN_DEFCOLR);
} else
size = 0;
screen_write_move_cursor(ctx, 0, py);
screen_write_copy_area(
ctx, &w->base, screen_size_x(s) - size, 1, data->ox, data->oy);
}
void
window_copy_write_lines(
struct window *w, struct screen_write_ctx *ctx, u_int py, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
if (py == 0) {
window_copy_write_line(w, ctx, 0);
if (ny == 1)
return;
py++;
ny--;
}
screen_write_move_cursor(ctx, 0, py);
screen_write_copy_area(
ctx, &w->base, screen_size_x(s), ny, data->ox, data->oy);
}
void
window_copy_write_column(
struct window *w, struct screen_write_ctx *ctx, u_int px)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
screen_write_move_cursor(ctx, px, 0);
screen_write_copy_area(
ctx, &w->base, 1, screen_size_y(s), data->ox, data->oy);
}
void
window_copy_write_columns(
struct window *w, struct screen_write_ctx *ctx, u_int px, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
screen_write_move_cursor(ctx, px, 0);
screen_write_copy_area(
ctx, &w->base, nx, screen_size_y(s), data->ox, data->oy);
}
void
window_copy_redraw_lines(struct window *w, u_int py, u_int ny)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_write_ctx ctx;
u_int i;
screen_write_start_window(&ctx, w);
for (i = py; i < py + ny; i++)
window_copy_write_line(w, &ctx, i);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_redraw_screen(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
window_copy_redraw_lines(w, 0, screen_size_x(&data->screen));
}
void
window_copy_update_cursor(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_write_ctx ctx;
screen_write_start_window(&ctx, w);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}
void
window_copy_start_selection(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
data->selx = screen_x(&w->base, data->cx) + data->ox;
data->sely = screen_y(&w->base, data->cy) - data->oy;
s->sel.flag = 1;
window_copy_update_selection(w);
}
int
window_copy_update_selection(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &data->screen;
u_int sx, sy, tx, ty;
if (!s->sel.flag)
return (0);
/* Find top-left of screen. */
tx = screen_x(&w->base, 0) + data->ox;
ty = screen_y(&w->base, 0) - 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_last_y(s)) {
/* Below it. */
sx = screen_last_x(s);
sy = screen_last_y(s);
} else if (sx < tx) {
/* To the left. */
sx = 0;
} else if (sx > tx + screen_last_x(s)) {
/* To the right. */
sx = 0;
sy++;
if (sy > screen_last_y(s))
sy = screen_last_y(s);
} else {
sx -= tx;
sy -= ty;
}
sx = screen_x(s, sx);
sy = screen_x(s, sy);
screen_set_selection(
s, sx, sy, screen_x(s, data->cx), screen_y(s, data->cy));
return (1);
}
void
@ -234,9 +368,14 @@ window_copy_copy_selection(struct window *w)
*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 = data->size + data->cy - data->oy;
xx = screen_x(&w->base, data->cx) + data->ox;
yy = screen_y(&w->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;
@ -281,8 +420,7 @@ 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;
u_char i, xx;
if (sx > ex)
return;
@ -296,11 +434,11 @@ window_copy_copy_line(struct window *w,
if (sx < ex) {
for (i = sx; i < ex; i++) {
*buf = ensure_size(*buf, len, 1, *off + 1);
(*buf)[*off] = s->grid_data[sy][i];
(*buf)[*off] = w->base.grid_data[sy][i];
(*off)++;
}
}
*buf = ensure_size(*buf, len, 1, *off + 1);
(*buf)[*off] = '\n';
(*off)++;
@ -309,25 +447,16 @@ window_copy_copy_line(struct window *w,
u_int
window_copy_find_length(struct window *w, u_int py)
{
struct screen *s = &w->screen;
u_int px;
u_int px;
px = s->grid_size[py];
while (px > 0 && s->grid_data[py][px - 1] == SCREEN_DEFDATA)
px = w->base.grid_size[py];
while (px > 0 && w->base.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)
window_copy_cursor_start_of_line(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
@ -335,49 +464,52 @@ window_copy_cursor_bol(struct window *w)
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);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy, 1);
else
window_copy_update_cursor(w);
}
void
window_copy_cursor_eol(struct window *w)
window_copy_cursor_end_of_line(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
u_int xx;
struct screen *s = &data->screen;
u_int px, py;
xx = window_copy_find_length(w, data->size + data->cy - data->oy);
py = screen_y(&w->base, data->cy) - data->oy;
px = window_copy_find_length(w, py);
/* On screen. */
if (xx > data->ox && xx < data->ox + screen_last_x(s))
data->cx = xx - data->ox;
if (px > data->ox && px < data->ox + screen_last_x(s))
data->cx = px - data->ox;
/* Off right of screen. */
if (xx > data->ox + screen_last_x(s)) {
if (px > 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));
px - 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)) {
if (px <= data->ox) {
if (px < screen_last_x(s)) {
/* Short enough to fit on screen. */
window_copy_scroll_right(w, data->ox);
data->cx = xx;
data->cx = px;
} else {
/* Too long to fit on screen. */
window_copy_scroll_right(
w, data->ox - (xx - screen_last_x(s)));
w, data->ox - (px - 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);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy, 1);
else
window_copy_update_cursor(w);
}
void
@ -385,79 +517,102 @@ 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 {
if (data->cx == 0) {
if (data->ox > 0)
window_copy_scroll_right(w, 1);
else {
window_copy_cursor_up(w);
window_copy_cursor_end_of_line(w);
}
} else {
data->cx--;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy, 1);
else
window_copy_update_cursor(w);
}
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;
u_int px, py;
if (data->cx == screen_last_x(s))
window_copy_scroll_left(w, 1);
else {
py = screen_y(&w->base, data->cy) - data->oy;
px = window_copy_find_length(w, py);
if (data->cx >= px) {
window_copy_cursor_start_of_line(w);
window_copy_cursor_down(w);
} else {
data->cx++;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 1);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy, 1);
else
window_copy_update_cursor(w);
}
window_copy_move_cursor(w);
}
void
window_copy_cursor_up(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
u_int ox, oy, px, py;
oy = screen_y(&w->base, data->cy) - data->oy;
ox = window_copy_find_length(w, oy);
if (data->cy == 0)
window_copy_scroll_down(w, 1);
else {
data->cy--;
if (data->selflag)
window_copy_draw_lines(w, data->cy, 2);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy, 2);
else
window_copy_update_cursor(w);
}
window_copy_move_cursor(w);
py = screen_y(&w->base, data->cy) - data->oy;
px = window_copy_find_length(w, py);
if (data->cx > px || data->cx == ox)
window_copy_cursor_end_of_line(w);
}
void
window_copy_cursor_down(struct window *w)
{
struct window_copy_mode_data *data = w->modedata;
struct screen *s = &w->screen;
struct screen *s = &data->screen;
u_int ox, oy, px, py;
oy = screen_y(&w->base, data->cy) - data->oy;
ox = window_copy_find_length(w, oy);
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);
if (window_copy_update_selection(w))
window_copy_redraw_lines(w, data->cy - 1, 2);
else
window_copy_update_cursor(w);
}
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;
py = screen_y(&w->base, data->cy) - data->oy;
px = window_copy_find_length(w, py);
screen_draw_start_window(&ctx, w, data->ox, data->oy);
window_copy_draw(w, &ctx, py, ny);
screen_draw_stop(&ctx);
if (data->cx > px || data->cx == ox)
window_copy_cursor_end_of_line(w);
}
void
window_copy_scroll_left(struct window *w, u_int nx)
{
struct window_copy_mode_data *data = w->modedata;
struct screen_draw_ctx ctx;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
if (data->ox > SHRT_MAX - nx)
@ -465,26 +620,29 @@ window_copy_scroll_left(struct window *w, u_int nx)
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);
window_copy_update_selection(w);
screen_write_start_window(&ctx, w);
for (i = 1; i < screen_size_y(s); i++) {
screen_write_move_cursor(&ctx, 0, i);
screen_write_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);
window_copy_write_columns(w, &ctx, screen_size_x(s) - nx, nx);
window_copy_write_line(w, &ctx, 0);
if (s->sel.flag) {
window_copy_update_selection(w);
window_copy_write_lines(w, &ctx, data->cy, 1);
}
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_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;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
if (data->ox < nx)
@ -492,72 +650,71 @@ window_copy_scroll_right(struct window *w, u_int nx)
if (nx == 0)
return;
data->ox -= nx;
window_copy_update_selection(w);
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);
screen_write_start_window(&ctx, w);
for (i = 1; i < screen_size_y(s); i++) {
screen_write_move_cursor(&ctx, 0, i);
screen_write_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);
window_copy_write_columns(w, &ctx, 0, nx);
window_copy_write_line(w, &ctx, 0);
if (s->sel.flag)
window_copy_write_lines(w, &ctx, data->cy, 1);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_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;
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(w);
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);
screen_write_start_window(&ctx, w);
screen_write_move_cursor(&ctx, 0, 0);
screen_write_delete_lines(&ctx, ny);
window_copy_write_lines(w, &ctx, screen_size_y(s) - ny, ny);
window_copy_write_line(w, &ctx, 0);
if (s->sel.flag && screen_size_y(s) > ny)
window_copy_write_lines(w, &ctx, screen_size_y(s) - ny - 1, 1);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_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;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
if (ny > data->size)
if (ny > w->base.hsize)
return;
if (data->oy > data->size - ny)
ny = data->size - data->oy;
if (data->oy > w->base.hsize - ny)
ny = w->base.hsize - data->oy;
if (ny == 0)
return;
data->oy += ny;
window_copy_update_selection(w);
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);
screen_write_start_window(&ctx, w);
screen_write_move_cursor(&ctx, 0, 0);
screen_write_insert_lines(&ctx, ny);
window_copy_write_lines(w, &ctx, 0, ny);
if (s->sel.flag && screen_size_y(s) > ny)
window_copy_write_lines(w, &ctx, ny, 1);
else if (ny == 1) /* nuke position */
window_copy_write_line(w, &ctx, 1);
screen_write_move_cursor(&ctx, data->cx, data->cy);
screen_write_stop(&ctx);
}