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/* -- xrandr.c -- */
#include "x11vnc.h"
#include "cleanup.h"
#include "connections.h"
#include "remote.h"
#include "screen.h"
#include "win_utils.h"
time_t last_subwin_trap = 0;
int subwin_trap_count = 0;
XErrorHandler old_getimage_handler;
int xrandr_present = 0;
int xrandr_width = -1;
int xrandr_height = -1;
int xrandr_rotation = -1;
Time xrandr_timestamp = 0;
Time xrandr_cfg_time = 0;
void initialize_xrandr(void);
int check_xrandr_event(char *msg);
int known_xrandr_mode(char *s);
static int handle_subwin_resize(char *msg);
static void handle_xrandr_change(int new_x, int new_y);
void initialize_xrandr(void) {
if (xrandr_present && dpy) {
#if LIBVNCSERVER_HAVE_LIBXRANDR
Rotation rot;
X_LOCK;
xrandr_width = XDisplayWidth(dpy, scr);
xrandr_height = XDisplayHeight(dpy, scr);
XRRRotations(dpy, scr, &rot);
xrandr_rotation = (int) rot;
if (xrandr) {
XRRSelectInput(dpy, rootwin, RRScreenChangeNotifyMask);
} else {
XRRSelectInput(dpy, rootwin, 0);
}
X_UNLOCK;
#endif
} else if (xrandr) {
rfbLog("-xrandr mode specified, but no RANDR support on\n");
rfbLog(" display or in client library. Disabling -xrandr "
"mode.\n");
xrandr = 0;
}
}
static int handle_subwin_resize(char *msg) {
int new_x, new_y;
int i, check = 10, ms = 250; /* 2.5 secs total... */
if (msg) {} /* unused vars warning: */
if (! subwin) {
return 0; /* hmmm... */
}
if (! valid_window(subwin, NULL, 0)) {
rfbLogEnable(1);
rfbLog("subwin 0x%lx went away!\n", subwin);
X_UNLOCK;
clean_up_exit(1);
}
if (! get_window_size(subwin, &new_x, &new_y)) {
rfbLogEnable(1);
rfbLog("could not get size of subwin 0x%lx\n", subwin);
X_UNLOCK;
clean_up_exit(1);
}
if (wdpy_x == new_x && wdpy_y == new_y) {
/* no change */
return 0;
}
/* window may still be changing (e.g. drag resize) */
for (i=0; i < check; i++) {
int newer_x, newer_y;
usleep(ms * 1000);
if (! get_window_size(subwin, &newer_x, &newer_y)) {
rfbLogEnable(1);
rfbLog("could not get size of subwin 0x%lx\n", subwin);
clean_up_exit(1);
}
if (new_x == newer_x && new_y == newer_y) {
/* go for it... */
break;
} else {
rfbLog("subwin 0x%lx still changing size...\n", subwin);
new_x = newer_x;
new_y = newer_y;
}
}
rfbLog("subwin 0x%lx new size: x: %d -> %d, y: %d -> %d\n",
subwin, wdpy_x, new_x, wdpy_y, new_y);
rfbLog("calling handle_xrandr_change() for resizing\n");
X_UNLOCK;
handle_xrandr_change(new_x, new_y);
return 1;
}
static void handle_xrandr_change(int new_x, int new_y) {
rfbClientIteratorPtr iter;
rfbClientPtr cl;
RAWFB_RET_VOID
/* sanity check xrandr_mode */
if (! xrandr_mode) {
xrandr_mode = strdup("default");
} else if (! known_xrandr_mode(xrandr_mode)) {
free(xrandr_mode);
xrandr_mode = strdup("default");
}
rfbLog("xrandr_mode: %s\n", xrandr_mode);
if (!strcmp(xrandr_mode, "exit")) {
close_all_clients();
rfbLog(" shutting down due to XRANDR event.\n");
clean_up_exit(0);
}
if (!strcmp(xrandr_mode, "newfbsize") && screen) {
iter = rfbGetClientIterator(screen);
while( (cl = rfbClientIteratorNext(iter)) ) {
if (cl->useNewFBSize) {
continue;
}
rfbLog(" closing client %s (no useNewFBSize"
" support).\n", cl->host);
rfbCloseClient(cl);
rfbClientConnectionGone(cl);
}
rfbReleaseClientIterator(iter);
}
/* default, resize, and newfbsize create a new fb: */
rfbLog("check_xrandr_event: trying to create new framebuffer...\n");
if (new_x < wdpy_x || new_y < wdpy_y) {
check_black_fb();
}
do_new_fb(1);
rfbLog("check_xrandr_event: fb WxH: %dx%d\n", wdpy_x, wdpy_y);
}
int check_xrandr_event(char *msg) {
XEvent xev;
RAWFB_RET(0)
if (subwin) {
return handle_subwin_resize(msg);
}
#if LIBVNCSERVER_HAVE_LIBXRANDR
if (! xrandr || ! xrandr_present) {
return 0;
}
if (xrandr_base_event_type && XCheckTypedEvent(dpy,
xrandr_base_event_type + RRScreenChangeNotify, &xev)) {
int do_change;
XRRScreenChangeNotifyEvent *rev;
rev = (XRRScreenChangeNotifyEvent *) &xev;
rfbLog("check_xrandr_event():\n");
rfbLog("Detected XRANDR event at location '%s':\n", msg);
rfbLog(" serial: %d\n", (int) rev->serial);
rfbLog(" timestamp: %d\n", (int) rev->timestamp);
rfbLog(" cfg_timestamp: %d\n", (int) rev->config_timestamp);
rfbLog(" size_id: %d\n", (int) rev->size_index);
rfbLog(" sub_pixel: %d\n", (int) rev->subpixel_order);
rfbLog(" rotation: %d\n", (int) rev->rotation);
rfbLog(" width: %d\n", (int) rev->width);
rfbLog(" height: %d\n", (int) rev->height);
rfbLog(" mwidth: %d mm\n", (int) rev->mwidth);
rfbLog(" mheight: %d mm\n", (int) rev->mheight);
rfbLog("\n");
rfbLog("check_xrandr_event: previous WxH: %dx%d\n",
wdpy_x, wdpy_y);
if (wdpy_x == rev->width && wdpy_y == rev->height &&
xrandr_rotation == (int) rev->rotation) {
rfbLog("check_xrandr_event: no change detected.\n");
do_change = 0;
} else {
do_change = 1;
}
xrandr_width = rev->width;
xrandr_height = rev->height;
xrandr_timestamp = rev->timestamp;
xrandr_cfg_time = rev->config_timestamp;
xrandr_rotation = (int) rev->rotation;
rfbLog("check_xrandr_event: updating config...\n");
XRRUpdateConfiguration(&xev);
if (do_change) {
X_UNLOCK;
handle_xrandr_change(rev->width, rev->height);
}
rfbLog("check_xrandr_event: current WxH: %dx%d\n",
XDisplayWidth(dpy, scr), XDisplayHeight(dpy, scr));
rfbLog("check_xrandr_event(): returning control to"
" caller...\n");
return do_change;
}
#endif
return 0;
}
int known_xrandr_mode(char *s) {
/*
* default:
* resize: the default
* exit: shutdown clients and exit.
* newfbsize: shutdown clients that do not support NewFBSize encoding.
*/
if (strcmp(s, "default") && strcmp(s, "resize") &&
strcmp(s, "exit") && strcmp(s, "newfbsize")) {
return 0;
} else {
return 1;
}
}
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