/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2010 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Sam Lantinga

slouken@libsdl.org

*/

#include "SDL_config.h"

#include <sys/types.h>

#include <sys/time.h>

#include <signal.h>

#include <unistd.h>

#include <limits.h> /* For INT_MAX */

#include "SDL_x11video.h"

#include "../../events/SDL_events_c.h"

#include "../../events/SDL_mouse_c.h"

#include "SDL_timer.h"

#include "SDL_syswm.h"

#define DEBUG_XEVENTS

static void

X11_DispatchEvent(_THIS)

{

SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;

Display *display = videodata->display;

SDL_WindowData *data;

XEvent xevent;

int i;

SDL_zero(xevent); /* valgrind fix. --ryan. */

XNextEvent(display, &xevent);

/* filter events catchs XIM events and sends them to the correct

handler */

if (XFilterEvent(&xevent, None) == True) {

#if 0

printf("Filtered event type = %d display = %d window = %d\n",

xevent.type, xevent.xany.display, xevent.xany.window);

#endif

return;

}

/* Send a SDL_SYSWMEVENT if the application wants them */

if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {

SDL_SysWMmsg wmmsg;

SDL_VERSION(&wmmsg.version);

wmmsg.subsystem = SDL_SYSWM_X11;

wmmsg.event.xevent = xevent;

SDL_SendSysWMEvent(&wmmsg);

}

data = NULL;

if (videodata && videodata->windowlist) {

for (i = 0; i < videodata->numwindows; ++i) {

if ((videodata->windowlist[i] != NULL) &&

(videodata->windowlist[i]->xwindow == xevent.xany.window)) {

data = videodata->windowlist[i];

break;

}

}

}

if (!data) {

return;

}

#if 0

printf("type = %d display = %d window = %d\n",

xevent.type, xevent.xany.display, xevent.xany.window);

#endif

switch (xevent.type) {

/* Gaining mouse coverage? */

case EnterNotify:{

#ifdef DEBUG_XEVENTS

printf("EnterNotify! (%d,%d,%d)\n",

xevent.xcrossing.x,

xevent.xcrossing.y,

xevent.xcrossing.mode);

if (xevent.xcrossing.mode == NotifyGrab)

printf("Mode: NotifyGrab\n");

if (xevent.xcrossing.mode == NotifyUngrab)

printf("Mode: NotifyUngrab\n");

#endif

SDL_SetMouseFocus(data->window);

}

break;

/* Losing mouse coverage? */

case LeaveNotify:{

#ifdef DEBUG_XEVENTS

printf("LeaveNotify! (%d,%d,%d)\n",

xevent.xcrossing.x,

xevent.xcrossing.y,

xevent.xcrossing.mode);

if (xevent.xcrossing.mode == NotifyGrab)

printf("Mode: NotifyGrab\n");

if (xevent.xcrossing.mode == NotifyUngrab)

printf("Mode: NotifyUngrab\n");

#endif

if (xevent.xcrossing.detail != NotifyInferior) {

SDL_SetMouseFocus(NULL);

}

}

break;

/* Gaining input focus? */

case FocusIn:{

#ifdef DEBUG_XEVENTS

printf("FocusIn!\n");

#endif

SDL_SetKeyboardFocus(data->window);

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

XSetICFocus(data->ic);

}

#endif

}

break;

/* Losing input focus? */

case FocusOut:{

#ifdef DEBUG_XEVENTS

printf("FocusOut!\n");

#endif

SDL_SetKeyboardFocus(NULL);

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

XUnsetICFocus(data->ic);

}

#endif

}

break;

/* Generated upon EnterWindow and FocusIn */

case KeymapNotify:{

#ifdef DEBUG_XEVENTS

printf("KeymapNotify!\n");

#endif

/* FIXME:

X11_SetKeyboardState(SDL_Display, xevent.xkeymap.key_vector);

*/

}

break;

/* Has the keyboard layout changed? */

case MappingNotify:{

#ifdef DEBUG_XEVENTS

printf("MappingNotify!\n");

#endif

X11_UpdateKeymap(_this);

}

break;

/* Key press? */

case KeyPress:{

KeyCode keycode = xevent.xkey.keycode;

KeySym keysym = NoSymbol;

char text[SDL_TEXTINPUTEVENT_TEXT_SIZE];

Status status = 0;

#ifdef DEBUG_XEVENTS

printf("KeyPress (X11 keycode = 0x%X)\n", xevent.xkey.keycode);

#endif

SDL_SendKeyboardKey(SDL_PRESSED, videodata->key_layout[keycode]);

#if 0

if (videodata->key_layout[keycode] == SDLK_UNKNOWN) {

int min_keycode, max_keycode;

XDisplayKeycodes(display, &min_keycode, &max_keycode);

keysym = XKeycodeToKeysym(display, keycode, 0);

fprintf(stderr,

"The key you just pressed is not recognized by SDL. To help get this fixed, please report this to the SDL mailing list <sdl@libsdl.org> X11 KeyCode %d (%d), X11 KeySym 0x%X (%s).\n",

keycode, keycode - min_keycode, keysym,

XKeysymToString(keysym));

}

#endif

/* */

SDL_zero(text);

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

Xutf8LookupString(data->ic, &xevent.xkey, text, sizeof(text),

&keysym, &status);

}

#else

XLookupString(&xevent.xkey, text, sizeof(text), &keysym, NULL);

#endif

if (*text) {

SDL_SendKeyboardText(text);

}

}

break;

/* Key release? */

case KeyRelease:{

KeyCode keycode = xevent.xkey.keycode;

#ifdef DEBUG_XEVENTS

printf("KeyRelease (X11 keycode = 0x%X)\n", xevent.xkey.keycode);

#endif

SDL_SendKeyboardKey(SDL_RELEASED, videodata->key_layout[keycode]);

}

break;

/* Have we been iconified? */

case UnmapNotify:{

#ifdef DEBUG_XEVENTS

printf("UnmapNotify!\n");

#endif

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_HIDDEN, 0, 0);

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_MINIMIZED, 0, 0);

}

break;

/* Have we been restored? */

case MapNotify:{

#ifdef DEBUG_XEVENTS

printf("MapNotify!\n");

#endif

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_SHOWN, 0, 0);

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_RESTORED, 0, 0);

}

break;

/* Have we been resized or moved? */

case ConfigureNotify:{

#ifdef DEBUG_XEVENTS

printf("ConfigureNotify! (resize: %dx%d)\n",

xevent.xconfigure.width, xevent.xconfigure.height);

#endif

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_MOVED,

xevent.xconfigure.x, xevent.xconfigure.y);

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_RESIZED,

xevent.xconfigure.width,

xevent.xconfigure.height);

}

break;

/* Have we been requested to quit (or another client message?) */

case ClientMessage:{

if ((xevent.xclient.format == 32) &&

(xevent.xclient.data.l[0] == videodata->WM_DELETE_WINDOW)) {

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_CLOSE, 0, 0);

}

}

break;

/* Do we need to refresh ourselves? */

case Expose:{

#ifdef DEBUG_XEVENTS

printf("Expose (count = %d)\n", xevent.xexpose.count);

#endif

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_EXPOSED, 0, 0);

}

break;

case MotionNotify:{

#ifdef DEBUG_MOTION

printf("X11 motion: %d,%d\n", xevent.xmotion.x, xevent.xmotion.y);

#endif

SDL_SendMouseMotion(data->window, 0, xevent.xmotion.x, xevent.xmotion.y);

}

break;

case ButtonPress:{

SDL_SendMouseButton(data->window, SDL_PRESSED, xevent.xbutton.button);

}

break;

case ButtonRelease:{

SDL_SendMouseButton(data->window, SDL_RELEASED, xevent.xbutton.button);

}

break;

case PropertyNotify:{

#ifdef DEBUG_XEVENTS

char *name = XGetAtomName(display, xevent.xproperty.atom);

printf("PropertyNotify (atom = %s)\n", name ? name : "NULL");

if (name) {

XFree(name);

}

#endif

if (xevent.xproperty.atom == videodata->_NET_WM_STATE) {

unsigned char *propdata;

int status, real_format;

Atom real_type;

unsigned long items_read, items_left, i;

#ifdef DEBUG_XEVENTS

printf("_NET_WM_STATE: {");

#endif

status = XGetWindowProperty(display, data->xwindow, videodata->_NET_WM_STATE, 0L, 8192L, False, XA_ATOM, &real_type, &real_format, &items_read, &items_left, &propdata);

if (status == Success) {

Atom *atoms = (Atom *)propdata;

for (i = 0; i < items_read; i++) {

if (atoms[i] == videodata->_NET_WM_STATE_HIDDEN) {

#ifdef DEBUG_XEVENTS

printf(" _NET_WM_STATE_HIDDEN");

#endif

}

if (atoms[i] == videodata->_NET_WM_STATE_MAXIMIZED_HORZ) {

#ifdef DEBUG_XEVENTS

printf(" _NET_WM_STATE_MAXIMIZED_HORZ");

#endif

}

if (atoms[i] == videodata->_NET_WM_STATE_MAXIMIZED_VERT) {

#ifdef DEBUG_XEVENTS

printf(" _NET_WM_STATE_MAXIMIZED_VERT");

#endif

}

if (atoms[i] == videodata->_NET_WM_STATE_FULLSCREEN) {

#ifdef DEBUG_XEVENTS

printf(" _NET_WM_STATE_FULLSCREEN");

#endif

}

}

}

#ifdef DEBUG_XEVENTS

printf(" }\n");

#endif

}

}

break;

/* Copy the selection from XA_CUT_BUFFER0 to the requested property */

case SelectionRequest: {

XSelectionRequestEvent *req;

XEvent sevent;

int seln_format;

unsigned long nbytes;

unsigned long overflow;

unsigned char *seln_data;

req = &xevent.xselectionrequest;

#ifdef DEBUG_XEVENTS

printf("SelectionRequest (requestor = %ld, target = %ld)\n",

req->requestor, req->target);

#endif

sevent.xselection.type = SelectionNotify;

sevent.xselection.display = req->display;

sevent.xselection.selection = req->selection;

sevent.xselection.target = None;

sevent.xselection.property = None;

sevent.xselection.requestor = req->requestor;

sevent.xselection.time = req->time;

if (XGetWindowProperty(display, DefaultRootWindow(display),

XA_CUT_BUFFER0, 0, INT_MAX/4, False, req->target,

&sevent.xselection.target, &seln_format, &nbytes,

&overflow, &seln_data) == Success) {

if (sevent.xselection.target == req->target) {

XChangeProperty(display, req->requestor, req->property,

sevent.xselection.target, seln_format, PropModeReplace,

seln_data, nbytes);

sevent.xselection.property = req->property;

}

XFree(seln_data);

}

XSendEvent(display, req->requestor, False, 0, &sevent);

XSync(display, False);

}

break;

case SelectionNotify: {

#ifdef DEBUG_XEVENTS

printf("SelectionNotify (requestor = %ld, target = %ld)\n",

xevent.xselection.requestor, xevent.xselection.target);

#endif

videodata->selection_waiting = SDL_FALSE;

}

break;

default:{

#ifdef DEBUG_XEVENTS

printf("Unhandled event %d\n", xevent.type);

#endif

}

break;

}

}

/* Ack! XPending() actually performs a blocking read if no events available */

static int

X11_Pending(Display * display)

{

/* Flush the display connection and look to see if events are queued */

XFlush(display);

if (XEventsQueued(display, QueuedAlready)) {

return (1);

}

/* More drastic measures are required -- see if X is ready to talk */

{

static struct timeval zero_time; /* static == 0 */

int x11_fd;

fd_set fdset;

x11_fd = ConnectionNumber(display);

FD_ZERO(&fdset);

FD_SET(x11_fd, &fdset);

if (select(x11_fd + 1, &fdset, NULL, NULL, &zero_time) == 1) {

return (XPending(display));

}

}

/* Oh well, nothing is ready .. */

return (0);

}

void

X11_PumpEvents(_THIS)

{

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

/* Update activity every 30 seconds to prevent screensaver */

if (_this->suspend_screensaver) {

Uint32 now = SDL_GetTicks();

if (!data->screensaver_activity ||

(int) (now - data->screensaver_activity) >= 30000) {

XResetScreenSaver(data->display);

data->screensaver_activity = now;

}

}

/* Keep processing pending events */

while (X11_Pending(data->display)) {

X11_DispatchEvent(_this);

}

}

/* This is so wrong it hurts */

#define GNOME_SCREENSAVER_HACK

#ifdef GNOME_SCREENSAVER_HACK

#include <unistd.h>

static pid_t screensaver_inhibit_pid;

static void

gnome_screensaver_disable()

{

screensaver_inhibit_pid = fork();

if (screensaver_inhibit_pid == 0) {

close(0);

close(1);

close(2);

execl("/usr/bin/gnome-screensaver-command",

"gnome-screensaver-command",

"--inhibit",

"--reason",

"GNOME screensaver doesn't respect MIT-SCREEN-SAVER", NULL);

exit(2);

}

}

static void

gnome_screensaver_enable()

{

kill(screensaver_inhibit_pid, 15);

}

#endif

void

X11_SuspendScreenSaver(_THIS)

{

#if SDL_VIDEO_DRIVER_X11_SCRNSAVER

SDL_VideoData *data = (SDL_VideoData *) _this->driverdata;

int dummy;

int major_version, minor_version;

if (SDL_X11_HAVE_XSS) {

/* XScreenSaverSuspend was introduced in MIT-SCREEN-SAVER 1.1 */

if (!XScreenSaverQueryExtension(data->display, &dummy, &dummy) ||

!XScreenSaverQueryVersion(data->display,

&major_version, &minor_version) ||

major_version < 1 || (major_version == 1 && minor_version < 1)) {

return;

}

XScreenSaverSuspend(data->display, _this->suspend_screensaver);

XResetScreenSaver(data->display);

}

#endif

#ifdef GNOME_SCREENSAVER_HACK

if (_this->suspend_screensaver) {

gnome_screensaver_disable();

} else {

gnome_screensaver_enable();

}

#endif

}

/* vi: set ts=4 sw=4 expandtab: */