mirror of
https://github.com/tmux/tmux.git
synced 2024-12-04 19:58:48 +00:00
Tidy the resize code, merge some common bits and add some comments. From
"Mike" in GitHub issue 2392.
This commit is contained in:
nicm
parent
c8f3736b07
commit
1479e32e1a
375
resize.c
375
resize.c
@ -92,130 +92,156 @@ ignore_client_size(struct client *c)
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return (0);
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}
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void
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default_window_size(struct client *c, struct session *s, struct window *w,
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u_int *sx, u_int *sy, u_int *xpixel, u_int *ypixel, int type)
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static u_int
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clients_with_window(struct window *w)
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{
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struct client *loop;
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u_int cx, cy, n;
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const char *value;
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u_int n = 0;
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if (type == -1)
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type = options_get_number(global_w_options, "window-size");
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switch (type) {
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case WINDOW_SIZE_LARGEST:
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TAILQ_FOREACH(loop, &clients, entry) {
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if (ignore_client_size(loop) || !session_has(loop->session, w))
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continue;
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if (++n > 1)
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break;
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}
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return (n);
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}
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static int
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clients_calculate_size(int type, int current, struct session *s,
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struct window *w, int (*skip_client)(struct client *, int, int,
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struct session *, struct window *), u_int *sx, u_int *sy, u_int *xpixel,
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u_int *ypixel)
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{
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struct client *loop;
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u_int cx, cy, n = 0;
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/* Manual windows do not have their size changed based on a client. */
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if (type == WINDOW_SIZE_MANUAL)
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return (0);
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/*
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* Start comparing with 0 for largest and UINT_MAX for smallest or
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* latest.
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*/
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if (type == WINDOW_SIZE_LARGEST)
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*sx = *sy = 0;
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*xpixel = *ypixel = 0;
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TAILQ_FOREACH(loop, &clients, entry) {
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if (ignore_client_size(loop))
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continue;
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if (w != NULL && !session_has(loop->session, w))
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continue;
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if (w == NULL && loop->session != s)
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continue;
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else
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*sx = *sy = UINT_MAX;
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*xpixel = *ypixel = 0;
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cx = loop->tty.sx;
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cy = loop->tty.sy - status_line_size(loop);
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/*
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* For latest, count the number of clients with this window. We only
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* care if there is more than one.
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*/
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if (type == WINDOW_SIZE_LATEST)
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n = clients_with_window(w);
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/* Loop over the clients and work out the size. */
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TAILQ_FOREACH(loop, &clients, entry) {
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if (ignore_client_size(loop))
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continue;
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if (skip_client(loop, type, current, s, w))
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continue;
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/*
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* If there are multiple clients attached, only accept the
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* latest client; otherwise let the only client be chosen as
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* for smallest.
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*/
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if (type == WINDOW_SIZE_LATEST && n > 1 && loop != w->latest)
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continue;
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/* Work out this client's size. */
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cx = loop->tty.sx;
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cy = loop->tty.sy - status_line_size(loop);
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/*
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* If it is larger or smaller than the best so far, update the
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* new size.
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*/
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if (type == WINDOW_SIZE_LARGEST) {
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if (cx > *sx)
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*sx = cx;
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if (cy > *sy)
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*sy = cy;
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if (loop->tty.xpixel > *xpixel &&
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loop->tty.ypixel > *ypixel) {
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*xpixel = loop->tty.xpixel;
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*ypixel = loop->tty.ypixel;
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}
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}
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if (*sx == 0 || *sy == 0)
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goto manual;
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break;
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case WINDOW_SIZE_SMALLEST:
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*sx = *sy = UINT_MAX;
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*xpixel = *ypixel = 0;
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TAILQ_FOREACH(loop, &clients, entry) {
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if (ignore_client_size(loop))
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continue;
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if (w != NULL && !session_has(loop->session, w))
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continue;
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if (w == NULL && loop->session != s)
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continue;
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cx = loop->tty.sx;
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cy = loop->tty.sy - status_line_size(loop);
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} else {
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if (cx < *sx)
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*sx = cx;
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if (cy < *sy)
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*sy = cy;
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if (loop->tty.xpixel > *xpixel &&
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loop->tty.ypixel > *ypixel) {
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*xpixel = loop->tty.xpixel;
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*ypixel = loop->tty.ypixel;
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}
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}
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if (*sx == UINT_MAX || *sy == UINT_MAX)
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goto manual;
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break;
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case WINDOW_SIZE_LATEST:
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if (loop->tty.xpixel > *xpixel && loop->tty.ypixel > *ypixel) {
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*xpixel = loop->tty.xpixel;
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*ypixel = loop->tty.ypixel;
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}
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}
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/* Return whether a suitable size was found. */
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if (type == WINDOW_SIZE_LARGEST)
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return (*sx != 0 && *sy != 0);
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return (*sx != UINT_MAX && *sy != UINT_MAX);
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}
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static int
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default_window_size_skip_client (struct client *loop, int type,
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__unused int current, struct session *s, struct window *w)
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{
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/*
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* Latest checks separately, so do not check here. Otherwise only
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* include clients where the session contains the window or where the
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* session is the given session.
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*/
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if (type == WINDOW_SIZE_LATEST)
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return (0);
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if (w != NULL && !session_has(loop->session, w))
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return (1);
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if (w == NULL && loop->session != s)
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return (1);
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return (0);
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}
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void
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default_window_size(struct client *c, struct session *s, struct window *w,
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u_int *sx, u_int *sy, u_int *xpixel, u_int *ypixel, int type)
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{
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const char *value;
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/* Get type if not provided. */
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if (type == -1)
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type = options_get_number(global_w_options, "window-size");
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/*
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* Latest clients can use the given client if suitable. If there is no
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* client and no window, use the default size as for manual type.
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*/
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if (type == WINDOW_SIZE_LATEST) {
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if (c != NULL && !ignore_client_size(c)) {
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*sx = c->tty.sx;
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*sy = c->tty.sy - status_line_size(c);
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*xpixel = c->tty.xpixel;
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*ypixel = c->tty.ypixel;
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} else {
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if (w == NULL)
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goto manual;
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n = 0;
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TAILQ_FOREACH(loop, &clients, entry) {
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if (!ignore_client_size(loop) &&
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session_has(loop->session, w)) {
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if (++n > 1)
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break;
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}
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}
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*sx = *sy = UINT_MAX;
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*xpixel = *ypixel = 0;
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TAILQ_FOREACH(loop, &clients, entry) {
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if (ignore_client_size(loop))
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continue;
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if (n > 1 && loop != w->latest)
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continue;
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s = loop->session;
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cx = loop->tty.sx;
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cy = loop->tty.sy - status_line_size(loop);
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if (cx < *sx)
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*sx = cx;
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if (cy < *sy)
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*sy = cy;
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if (loop->tty.xpixel > *xpixel &&
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loop->tty.ypixel > *ypixel) {
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*xpixel = loop->tty.xpixel;
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*ypixel = loop->tty.ypixel;
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}
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}
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if (*sx == UINT_MAX || *sy == UINT_MAX)
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goto manual;
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*ypixel = c->tty.ypixel;
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goto done;
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}
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break;
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case WINDOW_SIZE_MANUAL:
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goto manual;
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if (w == NULL)
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type = WINDOW_SIZE_MANUAL;
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}
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goto done;
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manual:
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value = options_get_string(s->options, "default-size");
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if (sscanf(value, "%ux%u", sx, sy) != 2) {
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*sx = 80;
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*sy = 24;
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/*
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* Look for a client to base the size on. If none exists (or the type
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* is manual), use the default-size option.
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*/
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if (!clients_calculate_size(type, 0, s, w,
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default_window_size_skip_client, sx, sy, xpixel, ypixel)) {
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value = options_get_string(s->options, "default-size");
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if (sscanf(value, "%ux%u", sx, sy) != 2) {
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*sx = 80;
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*sy = 24;
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}
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}
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done:
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/* Make sure the limits are enforced. */
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if (*sx < WINDOW_MINIMUM)
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*sx = WINDOW_MINIMUM;
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if (*sx > WINDOW_MAXIMUM)
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@ -226,127 +252,50 @@ done:
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*sy = WINDOW_MAXIMUM;
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}
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static int
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recalculate_size_skip_client(struct client *loop, __unused int type,
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int current, __unused struct session *s, struct window *w)
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{
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/*
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* If the current flag is set, then skip any client where this window
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* is not the current window - this is used for aggressive-resize.
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* Otherwise skip any session that doesn't contain the window.
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*/
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if (current)
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return (loop->session->curw->window != w);
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return (session_has(loop->session, w) == 0);
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}
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void
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recalculate_size(struct window *w, int now)
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{
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struct session *s;
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struct client *c;
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u_int sx, sy, cx, cy, xpixel = 0, ypixel = 0, n;
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int type, current, has, changed;
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u_int sx, sy, xpixel = 0, ypixel = 0;
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int type, current, changed;
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/*
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* Do not attempt to resize windows which have no pane, they must be on
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* the way to destruction.
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*/
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if (w->active == NULL)
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return;
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log_debug("%s: @%u is %u,%u", __func__, w->id, w->sx, w->sy);
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/*
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* Type is manual, smallest, largest, latest. Current is the
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* aggressive-resize option (do not resize based on clients where the
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* window is not the current window).
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*/
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type = options_get_number(w->options, "window-size");
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current = options_get_number(w->options, "aggressive-resize");
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changed = 1;
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switch (type) {
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case WINDOW_SIZE_LARGEST:
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sx = sy = 0;
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TAILQ_FOREACH(c, &clients, entry) {
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if (ignore_client_size(c))
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continue;
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s = c->session;
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/* Look for a suitable client and get the new size. */
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changed = clients_calculate_size(type, current, NULL, w,
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recalculate_size_skip_client, &sx, &sy, &xpixel, &ypixel);
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if (current)
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has = (s->curw->window == w);
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else
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has = session_has(s, w);
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if (!has)
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continue;
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cx = c->tty.sx;
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cy = c->tty.sy - status_line_size(c);
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if (cx > sx)
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sx = cx;
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if (cy > sy)
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sy = cy;
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if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
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xpixel = c->tty.xpixel;
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ypixel = c->tty.ypixel;
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}
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}
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if (sx == 0 || sy == 0)
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changed = 0;
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break;
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case WINDOW_SIZE_SMALLEST:
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sx = sy = UINT_MAX;
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TAILQ_FOREACH(c, &clients, entry) {
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if (ignore_client_size(c))
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continue;
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s = c->session;
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if (current)
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has = (s->curw->window == w);
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else
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has = session_has(s, w);
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if (!has)
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continue;
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cx = c->tty.sx;
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cy = c->tty.sy - status_line_size(c);
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if (cx < sx)
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sx = cx;
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if (cy < sy)
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sy = cy;
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if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
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xpixel = c->tty.xpixel;
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ypixel = c->tty.ypixel;
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}
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}
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if (sx == UINT_MAX || sy == UINT_MAX)
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changed = 0;
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break;
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case WINDOW_SIZE_LATEST:
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n = 0;
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TAILQ_FOREACH(c, &clients, entry) {
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if (!ignore_client_size(c) &&
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session_has(c->session, w)) {
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if (++n > 1)
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break;
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}
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}
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sx = sy = UINT_MAX;
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TAILQ_FOREACH(c, &clients, entry) {
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if (ignore_client_size(c))
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continue;
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if (n > 1 && c != w->latest)
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continue;
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s = c->session;
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if (current)
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has = (s->curw->window == w);
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else
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has = session_has(s, w);
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if (!has)
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continue;
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cx = c->tty.sx;
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cy = c->tty.sy - status_line_size(c);
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if (cx < sx)
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sx = cx;
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if (cy < sy)
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sy = cy;
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if (c->tty.xpixel > xpixel && c->tty.ypixel > ypixel) {
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xpixel = c->tty.xpixel;
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ypixel = c->tty.ypixel;
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}
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}
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if (sx == UINT_MAX || sy == UINT_MAX)
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changed = 0;
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break;
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case WINDOW_SIZE_MANUAL:
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changed = 0;
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break;
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}
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/*
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* Make sure the size has actually changed. If the window has already
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* got a resize scheduled, then use the new size; otherwise the old.
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*/
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if (w->flags & WINDOW_RESIZE) {
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if (!now && changed && w->new_sx == sx && w->new_sy == sy)
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changed = 0;
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@ -355,10 +304,20 @@ recalculate_size(struct window *w, int now)
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changed = 0;
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}
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/*
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* If the size hasn't changed, update the window offset but not the
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* size.
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*/
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if (!changed) {
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tty_update_window_offset(w);
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return;
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}
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/*
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* If the now flag is set or if the window is sized manually, change
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* the size immediately. Otherwise set the flag and it will be done
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* later.
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*/
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log_debug("%s: @%u new size %u,%u", __func__, w->id, sx, sy);
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if (now || type == WINDOW_SIZE_MANUAL)
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resize_window(w, sx, sy, xpixel, ypixel);
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