This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_x11events.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 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"
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#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
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#include "SDL_syswm.h"
#include "SDL_x11video.h"
#include "../../events/SDL_events_c.h"
static void
X11_DispatchEvent(_THIS)
{
SDL_VideoData *videodata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *data;
XEvent xevent;
int i;
SDL_zero(xevent); /* valgrind fix. --ryan. */
XNextEvent(videodata->display, &xevent);
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/* filter events catchs XIM events and sends them to the correct
handler */
if (XFilterEvent(&xevent, None) == True) {
#ifdef DEBUG_XEVENTS
printf("Filtered event of type = 0x%X\n", xevent.type);
#endif
return;
}
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/* Send a SDL_SYSWMEVENT if the application wants them */
if (SDL_ProcessEvents[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;
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if (videodata && videodata->windowlist) {
for (i = 0; i < videodata->numwindows; ++i) {
if ((videodata->windowlist[i] != NULL) &&
(videodata->windowlist[i]->window == xevent.xany.window)) {
data = videodata->windowlist[i];
break;
}
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}
}
if (!data) {
return;
}
switch (xevent.type) {
/* Gaining mouse coverage? */
case EnterNotify:{
#ifdef DEBUG_XEVENTS
printf("EnterNotify! (%d,%d)\n", xevent.xcrossing.x,
xevent.xcrossing.y);
if (xevent.xcrossing.mode == NotifyGrab)
printf("Mode: NotifyGrab\n");
if (xevent.xcrossing.mode == NotifyUngrab)
printf("Mode: NotifyUngrab\n");
#endif
if ((xevent.xcrossing.mode != NotifyGrab) &&
(xevent.xcrossing.mode != NotifyUngrab)) {
SDL_SetMouseFocus(videodata->mouse, data->windowID);
SDL_SendMouseMotion(videodata->mouse, 0, xevent.xcrossing.x,
xevent.xcrossing.y);
}
}
break;
/* Losing mouse coverage? */
case LeaveNotify:{
#ifdef DEBUG_XEVENTS
printf("LeaveNotify! (%d,%d)\n", xevent.xcrossing.x,
xevent.xcrossing.y);
if (xevent.xcrossing.mode == NotifyGrab)
printf("Mode: NotifyGrab\n");
if (xevent.xcrossing.mode == NotifyUngrab)
printf("Mode: NotifyUngrab\n");
#endif
if ((xevent.xcrossing.mode != NotifyGrab) &&
(xevent.xcrossing.mode != NotifyUngrab) &&
(xevent.xcrossing.detail != NotifyInferior)) {
SDL_SendMouseMotion(videodata->mouse, 0,
xevent.xcrossing.x, xevent.xcrossing.y);
SDL_SetMouseFocus(videodata->mouse, 0);
}
}
break;
/* Gaining input focus? */
case FocusIn:{
#ifdef DEBUG_XEVENTS
printf("FocusIn!\n");
#endif
SDL_SetKeyboardFocus(videodata->keyboard, data->windowID);
#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(videodata->keyboard, 0);
#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;
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/* Has the keyboard layout changed? */
case MappingNotify:{
#ifdef DEBUG_XEVENTS
printf("MappingNotify!\n");
#endif
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X11_UpdateKeymap(_this);
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}
break;
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/* Mouse motion? */
case MotionNotify:{
#ifdef DEBUG_MOTION
printf("X11 motion: %d,%d\n", xevent.xmotion.x, xevent.xmotion.y);
#endif
SDL_SendMouseMotion(videodata->mouse, 0, xevent.xmotion.x,
xevent.xmotion.y);
}
break;
/* Mouse button press? */
case ButtonPress:{
SDL_SendMouseButton(videodata->mouse, SDL_PRESSED,
xevent.xbutton.button);
}
break;
/* Mouse button release? */
case ButtonRelease:{
SDL_SendMouseButton(videodata->mouse, SDL_RELEASED,
xevent.xbutton.button);
}
break;
/* Key press? */
case KeyPress:{
KeyCode keycode = xevent.xkey.keycode;
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KeySym keysym = NoSymbol;
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char text[SDL_TEXTINPUTEVENT_TEXT_SIZE];
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Status status = 0;
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#ifdef DEBUG_XEVENTS
printf("KeyPress (X11 keycode = 0x%X)\n", xevent.xkey.keycode);
#endif
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SDL_SendKeyboardKey(videodata->keyboard, SDL_PRESSED,
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videodata->key_layout[keycode]);
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if (videodata->key_layout[keycode] == SDLK_UNKNOWN) {
int min_keycode, max_keycode;
XDisplayKeycodes(videodata->display, &min_keycode,
&max_keycode);
keysym = XKeycodeToKeysym(videodata->display, keycode, 0);
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fprintf(stderr,
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"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));
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SDL_zero(text);
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#ifdef X_HAVE_UTF8_STRING
if (data->ic) {
Xutf8LookupString(data->ic, &xevent.xkey, text, sizeof(text),
&keysym, status);
}
#else
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XLookupString(&xevent.xkey, text, sizeof(text), &keysym, NULL);
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if (*text) {
printf("Sending text event %s\n", text);
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SDL_SendKeyboardText(videodata->keyboard, text);
}
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}
break;
/* Key release? */
case KeyRelease:{
KeyCode keycode = xevent.xkey.keycode;
#ifdef DEBUG_XEVENTS
printf("KeyRelease (X11 keycode = 0x%X)\n", xevent.xkey.keycode);
#endif
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SDL_SendKeyboardKey(videodata->keyboard, SDL_RELEASED,
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videodata->key_layout[keycode]);
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}
break;
/* Have we been iconified? */
case UnmapNotify:{
#ifdef DEBUG_XEVENTS
printf("UnmapNotify!\n");
#endif
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_HIDDEN, 0, 0);
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_MINIMIZED, 0,
0);
}
break;
/* Have we been restored? */
case MapNotify:{
#ifdef DEBUG_XEVENTS
printf("MapNotify!\n");
#endif
SDL_SendWindowEvent(data->windowID, SDL_WINDOWEVENT_SHOWN, 0, 0);
SDL_SendWindowEvent(data->windowID, 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->windowID, SDL_WINDOWEVENT_MOVED,
xevent.xconfigure.x, xevent.xconfigure.y);
SDL_SendWindowEvent(data->windowID, 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->windowID, 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->windowID, SDL_WINDOWEVENT_EXPOSED, 0,
0);
}
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 */
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;
/* Keep processing pending events */
while (X11_Pending(data->display)) {
X11_DispatchEvent(_this);
}
}
void
X11_SaveScreenSaver(Display * display, int *saved_timeout, BOOL * dpms)
{
int timeout, interval, prefer_blank, allow_exp;
XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
*saved_timeout = timeout;
#if SDL_VIDEO_DRIVER_X11_DPMS
if (SDL_X11_HAVE_DPMS) {
int dummy;
if (DPMSQueryExtension(display, &dummy, &dummy)) {
CARD16 state;
DPMSInfo(display, &state, dpms);
}
}
#else
*dpms = 0;
#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
}
void
X11_DisableScreenSaver(Display * display)
{
int timeout, interval, prefer_blank, allow_exp;
XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
timeout = 0;
XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp);
#if SDL_VIDEO_DRIVER_X11_DPMS
if (SDL_X11_HAVE_DPMS) {
int dummy;
if (DPMSQueryExtension(display, &dummy, &dummy)) {
DPMSDisable(display);
}
}
#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
}
void
X11_RestoreScreenSaver(Display * display, int saved_timeout, BOOL dpms)
{
int timeout, interval, prefer_blank, allow_exp;
XGetScreenSaver(display, &timeout, &interval, &prefer_blank, &allow_exp);
timeout = saved_timeout;
XSetScreenSaver(display, timeout, interval, prefer_blank, allow_exp);
#if SDL_VIDEO_DRIVER_X11_DPMS
if (SDL_X11_HAVE_DPMS) {
int dummy;
if (DPMSQueryExtension(display, &dummy, &dummy)) {
if (dpms) {
DPMSEnable(display);
}
}
}
#endif /* SDL_VIDEO_DRIVER_X11_DPMS */
}
/* vi: set ts=4 sw=4 expandtab: */