tmux/popup.c

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11 KiB
C
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/* $OpenBSD$ */
/*
* Copyright (c) 2020 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* 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 <sys/wait.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
struct popup_data {
struct client *c;
struct cmdq_item *item;
int flags;
char **lines;
u_int nlines;
char *cmd;
struct cmd_find_state fs;
struct screen s;
struct job *job;
struct input_ctx *ictx;
int status;
u_int px;
u_int py;
u_int sx;
u_int sy;
enum { OFF, MOVE, SIZE } dragging;
u_int dx;
u_int dy;
u_int lx;
u_int ly;
u_int lb;
};
static void
popup_write_screen(struct client *c, struct popup_data *pd)
{
struct cmdq_item *item = pd->item;
struct screen_write_ctx ctx;
char *copy, *next, *loop, *tmp;
struct format_tree *ft;
u_int i, y;
ft = format_create(item->client, item, FORMAT_NONE, 0);
if (cmd_find_valid_state(&pd->fs))
format_defaults(ft, c, pd->fs.s, pd->fs.wl, pd->fs.wp);
else
format_defaults(ft, c, NULL, NULL, NULL);
screen_write_start(&ctx, NULL, &pd->s);
screen_write_clearscreen(&ctx, 8);
y = 0;
for (i = 0; i < pd->nlines; i++) {
if (y == pd->sy - 2)
break;
copy = next = xstrdup(pd->lines[i]);
while ((loop = strsep(&next, "\n")) != NULL) {
if (y == pd->sy - 2)
break;
tmp = format_expand(ft, loop);
screen_write_cursormove(&ctx, 0, y, 0);
format_draw(&ctx, &grid_default_cell, pd->sx - 2, tmp,
NULL);
free(tmp);
y++;
}
free(copy);
}
format_free(ft);
screen_write_cursormove(&ctx, 0, y, 0);
screen_write_stop(&ctx);
}
static int
popup_mode_cb(struct client *c, u_int *cx, u_int *cy)
{
struct popup_data *pd = c->overlay_data;
if (pd->ictx == NULL)
return (0);
*cx = pd->px + 1 + pd->s.cx;
*cy = pd->py + 1 + pd->s.cy;
return (pd->s.mode);
}
static int
popup_check_cb(struct client *c, u_int px, u_int py)
{
struct popup_data *pd = c->overlay_data;
if (px < pd->px || px > pd->px + pd->sx - 1)
return (1);
if (py < pd->py || py > pd->py + pd->sy - 1)
return (1);
return (0);
}
static void
popup_draw_cb(struct client *c, __unused struct screen_redraw_ctx *ctx0)
{
struct popup_data *pd = c->overlay_data;
struct tty *tty = &c->tty;
struct screen s;
struct screen_write_ctx ctx;
u_int i, px = pd->px, py = pd->py;
screen_init(&s, pd->sx, pd->sy, 0);
screen_write_start(&ctx, NULL, &s);
screen_write_clearscreen(&ctx, 8);
screen_write_box(&ctx, pd->sx, pd->sy);
screen_write_cursormove(&ctx, 1, 1, 0);
screen_write_fast_copy(&ctx, &pd->s, 0, 0, pd->sx - 2, pd->sy - 2);
screen_write_stop(&ctx);
c->overlay_check = NULL;
for (i = 0; i < pd->sy; i++)
tty_draw_line(tty, NULL, &s, 0, i, pd->sx, px, py + i);
c->overlay_check = popup_check_cb;
}
static void
popup_free_cb(struct client *c)
{
struct popup_data *pd = c->overlay_data;
struct cmdq_item *item = pd->item;
u_int i;
if (item != NULL) {
if (pd->ictx != NULL &&
item->client != NULL &&
item->client->session == NULL)
item->client->retval = pd->status;
cmdq_continue(item);
}
server_client_unref(pd->c);
if (pd->job != NULL)
job_free(pd->job);
if (pd->ictx != NULL)
input_free(pd->ictx);
for (i = 0; i < pd->nlines; i++)
free(pd->lines[i]);
free(pd->lines);
screen_free(&pd->s);
free(pd->cmd);
free(pd);
}
static void
popup_handle_drag(struct client *c, struct popup_data *pd,
struct mouse_event *m)
{
u_int px, py;
if (!MOUSE_DRAG(m->b))
pd->dragging = OFF;
else if (pd->dragging == MOVE) {
if (m->x < pd->dx)
px = 0;
else if (m->x - pd->dx + pd->sx > c->tty.sx)
px = c->tty.sx - pd->sx;
else
px = m->x - pd->dx;
if (m->y < pd->dy)
py = 0;
else if (m->y - pd->dy + pd->sy > c->tty.sy)
py = c->tty.sy - pd->sy;
else
py = m->y - pd->dy;
pd->px = px;
pd->py = py;
pd->dx = m->x - pd->px;
pd->dy = m->y - pd->py;
server_redraw_client(c);
} else if (pd->dragging == SIZE) {
if (m->x < pd->px + 2)
return;
if (m->y < pd->py + 2)
return;
pd->sx = m->x - pd->px;
pd->sy = m->y - pd->py;
screen_resize(&pd->s, pd->sx, pd->sy, 0);
if (pd->ictx == NULL)
popup_write_screen(c, pd);
else if (pd->job != NULL)
job_resize(pd->job, pd->sx - 2, pd->sy - 2);
server_redraw_client(c);
}
}
static int
popup_key_cb(struct client *c, struct key_event *event)
{
struct popup_data *pd = c->overlay_data;
struct mouse_event *m = &event->m;
struct cmd_find_state *fs = &pd->fs;
struct cmdq_item *new_item;
struct cmd_parse_result *pr;
struct format_tree *ft;
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const char *cmd, *buf;
size_t len;
if (KEYC_IS_MOUSE(event->key)) {
if (pd->dragging != OFF) {
popup_handle_drag(c, pd, m);
goto out;
}
if (m->x < pd->px ||
m->x > pd->px + pd->sx - 1 ||
m->y < pd->py ||
m->y > pd->py + pd->sy - 1) {
if (MOUSE_BUTTONS (m->b) == 1)
return (1);
return (0);
}
if ((m->b & MOUSE_MASK_META) ||
m->x == pd->px ||
m->x == pd->px + pd->sx - 1 ||
m->y == pd->py ||
m->y == pd->py + pd->sy - 1) {
if (!MOUSE_DRAG(m->b))
goto out;
if (MOUSE_BUTTONS(m->lb) == 0)
pd->dragging = MOVE;
else if (MOUSE_BUTTONS(m->lb) == 2)
pd->dragging = SIZE;
pd->dx = m->lx - pd->px;
pd->dy = m->ly - pd->py;
goto out;
}
}
if (pd->ictx != NULL && (pd->flags & POPUP_WRITEKEYS)) {
if (((pd->flags & (POPUP_CLOSEEXIT|POPUP_CLOSEEXITZERO)) == 0 ||
pd->job == NULL) &&
(event->key == '\033' || event->key == '\003'))
return (1);
if (pd->job == NULL)
return (0);
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if (KEYC_IS_MOUSE(event->key)) {
/* Must be inside, checked already. */
if (!input_key_get_mouse(&pd->s, m, m->x - pd->px,
m->y - pd->py, &buf, &len))
return (0);
bufferevent_write(job_get_event(pd->job), buf, len);
return (0);
}
input_key(NULL, &pd->s, job_get_event(pd->job), event->key);
return (0);
}
if (pd->cmd == NULL)
return (1);
ft = format_create(NULL, pd->item, FORMAT_NONE, 0);
if (cmd_find_valid_state(fs))
format_defaults(ft, c, fs->s, fs->wl, fs->wp);
else
format_defaults(ft, c, NULL, NULL, NULL);
format_add(ft, "popup_key", "%s", key_string_lookup_key(event->key));
if (KEYC_IS_MOUSE(event->key)) {
format_add(ft, "popup_mouse", "1");
format_add(ft, "popup_mouse_x", "%u", m->x - pd->px);
format_add(ft, "popup_mouse_y", "%u", m->y - pd->py);
}
cmd = format_expand(ft, pd->cmd);
format_free(ft);
pr = cmd_parse_from_string(cmd, NULL);
switch (pr->status) {
case CMD_PARSE_EMPTY:
break;
case CMD_PARSE_ERROR:
new_item = cmdq_get_error(pr->error);
free(pr->error);
cmdq_append(c, new_item);
break;
case CMD_PARSE_SUCCESS:
if (pd->item != NULL)
m = &pd->item->shared->mouse;
else
m = NULL;
new_item = cmdq_get_command(pr->cmdlist, fs, m, 0);
cmd_list_free(pr->cmdlist);
cmdq_append(c, new_item);
break;
}
return (1);
out:
pd->lx = m->x;
pd->ly = m->y;
pd->lb = m->b;
return (0);
}
static void
popup_job_update_cb(struct job *job)
{
struct popup_data *pd = job_get_data(job);
struct evbuffer *evb = job_get_event(job)->input;
struct screen *s = &pd->s;
void *data = EVBUFFER_DATA(evb);
size_t size = EVBUFFER_LENGTH(evb);
if (size != 0) {
input_parse_screen(pd->ictx, s, data, size);
evbuffer_drain(evb, size);
pd->c->flags |= CLIENT_REDRAWOVERLAY;
}
}
static void
popup_job_complete_cb(struct job *job)
{
struct popup_data *pd = job_get_data(job);
int status;
status = job_get_status(pd->job);
if (WIFEXITED(status))
pd->status = WEXITSTATUS(status);
else if (WIFSIGNALED(status))
pd->status = WTERMSIG(status);
else
pd->status = 0;
pd->job = NULL;
if ((pd->flags & POPUP_CLOSEEXIT) ||
((pd->flags & POPUP_CLOSEEXITZERO) && pd->status == 0))
server_client_clear_overlay(pd->c);
}
u_int
popup_height(u_int nlines, const char **lines)
{
char *copy, *next, *loop;
u_int i, height = 0;
for (i = 0; i < nlines; i++) {
copy = next = xstrdup(lines[i]);
while ((loop = strsep(&next, "\n")) != NULL)
height++;
free(copy);
}
return (height);
}
u_int
popup_width(struct cmdq_item *item, u_int nlines, const char **lines,
struct client *c, struct cmd_find_state *fs)
{
char *copy, *next, *loop, *tmp;
struct format_tree *ft;
u_int i, width = 0, tmpwidth;
ft = format_create(item->client, item, FORMAT_NONE, 0);
if (fs != NULL && cmd_find_valid_state(fs))
format_defaults(ft, c, fs->s, fs->wl, fs->wp);
else
format_defaults(ft, c, NULL, NULL, NULL);
for (i = 0; i < nlines; i++) {
copy = next = xstrdup(lines[i]);
while ((loop = strsep(&next, "\n")) != NULL) {
tmp = format_expand(ft, loop);
tmpwidth = format_width(tmp);
if (tmpwidth > width)
width = tmpwidth;
free(tmp);
}
free(copy);
}
format_free(ft);
return (width);
}
int
popup_display(int flags, struct cmdq_item *item, u_int px, u_int py, u_int sx,
u_int sy, u_int nlines, const char **lines, const char *shellcmd,
const char *cmd, const char *cwd, struct client *c,
struct cmd_find_state *fs)
{
struct popup_data *pd;
u_int i;
struct session *s;
int jobflags;
if (sx < 3 || sy < 3)
return (-1);
if (c->tty.sx < sx || c->tty.sy < sy)
return (-1);
pd = xcalloc(1, sizeof *pd);
pd->item = item;
pd->flags = flags;
pd->c = c;
pd->c->references++;
pd->status = 128 + SIGHUP;
if (fs != NULL)
cmd_find_copy_state(&pd->fs, fs);
screen_init(&pd->s, sx - 2, sy - 2, 0);
if (cmd != NULL)
pd->cmd = xstrdup(cmd);
pd->px = px;
pd->py = py;
pd->sx = sx;
pd->sy = sy;
pd->nlines = nlines;
if (pd->nlines != 0)
pd->lines = xreallocarray(NULL, pd->nlines, sizeof *pd->lines);
for (i = 0; i < pd->nlines; i++)
pd->lines[i] = xstrdup(lines[i]);
popup_write_screen(c, pd);
if (shellcmd != NULL) {
if (fs != NULL)
s = fs->s;
else
s = NULL;
jobflags = JOB_NOWAIT|JOB_PTY;
if (flags & POPUP_WRITEKEYS)
jobflags |= JOB_KEEPWRITE;
pd->job = job_run(shellcmd, s, cwd, popup_job_update_cb,
popup_job_complete_cb, NULL, pd, jobflags, pd->sx - 2,
pd->sy - 2);
pd->ictx = input_init(NULL, job_get_event(pd->job));
}
server_client_set_overlay(c, 0, popup_check_cb, popup_mode_cb,
popup_draw_cb, popup_key_cb, popup_free_cb, pd);
return (0);
}