/*

Simple DirectMedia Layer

Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_X11

#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 "SDL_x11touch.h"

#include "SDL_x11xinput2.h"

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

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

#include "../../events/SDL_touch_c.h"

#include "SDL_timer.h"

#include "SDL_syswm.h"

#include <stdio.h>

typedef struct {

unsigned char *data;

int format, count;

Atom type;

} SDL_x11Prop;

/* Reads property

Must call X11_XFree on results

*/

static void X11_ReadProperty(SDL_x11Prop *p, Display *disp, Window w, Atom prop)

{

unsigned char *ret=NULL;

Atom type;

int fmt;

unsigned long count;

unsigned long bytes_left;

int bytes_fetch = 0;

do {

if (ret != 0) X11_XFree(ret);

X11_XGetWindowProperty(disp, w, prop, 0, bytes_fetch, False, AnyPropertyType, &type, &fmt, &count, &bytes_left, &ret);

bytes_fetch += bytes_left;

} while (bytes_left != 0);

p->data=ret;

p->format=fmt;

p->count=count;

p->type=type;

}

/* Find text-uri-list in a list of targets and return it's atom

if available, else return None */

static Atom X11_PickTarget(Display *disp, Atom list[], int list_count)

{

Atom request = None;

char *name;

int i;

for (i=0; i < list_count && request == None; i++) {

name = X11_XGetAtomName(disp, list[i]);

if (strcmp("text/uri-list", name)==0) request = list[i];

X11_XFree(name);

}

return request;

}

/* Wrapper for X11_PickTarget for a maximum of three targets, a special

case in the Xdnd protocol */

static Atom X11_PickTargetFromAtoms(Display *disp, Atom a0, Atom a1, Atom a2)

{

int count=0;

Atom atom[3];

if (a0 != None) atom[count++] = a0;

if (a1 != None) atom[count++] = a1;

if (a2 != None) atom[count++] = a2;

return X11_PickTarget(disp, atom, count);

}

/* #define DEBUG_XEVENTS */

struct KeyRepeatCheckData

{

XEvent *event;

SDL_bool found;

};

static Bool X11_KeyRepeatCheckIfEvent(Display *display, XEvent *chkev,

XPointer arg)

{

struct KeyRepeatCheckData *d = (struct KeyRepeatCheckData *) arg;

if (chkev->type == KeyPress &&

chkev->xkey.keycode == d->event->xkey.keycode &&

chkev->xkey.time - d->event->xkey.time < 2)

d->found = SDL_TRUE;

return False;

}

/* Check to see if this is a repeated key.

(idea shamelessly lifted from GII -- thanks guys! :)

*/

static SDL_bool X11_KeyRepeat(Display *display, XEvent *event)

{

XEvent dummyev;

struct KeyRepeatCheckData d;

d.event = event;

d.found = SDL_FALSE;

if (X11_XPending(display))

X11_XCheckIfEvent(display, &dummyev, X11_KeyRepeatCheckIfEvent,

(XPointer) &d);

return d.found;

}

static Bool X11_IsWheelCheckIfEvent(Display *display, XEvent *chkev,

XPointer arg)

{

XEvent *event = (XEvent *) arg;

/* we only handle buttons 4 and 5 - false positive avoidance */

if (chkev->type == ButtonRelease &&

(event->xbutton.button == Button4 || event->xbutton.button == Button5) &&

chkev->xbutton.button == event->xbutton.button &&

chkev->xbutton.time == event->xbutton.time)

return True;

return False;

}

static SDL_bool X11_IsWheelEvent(Display * display,XEvent * event,int * ticks)

{

XEvent relevent;

if (X11_XPending(display)) {

/* according to the xlib docs, no specific mouse wheel events exist.

however, mouse wheel events trigger a button press and a button release

immediately. thus, checking if the same button was released at the same

time as it was pressed, should be an adequate hack to derive a mouse

wheel event.

However, there is broken and unusual hardware out there...

- False positive: a button for which a release event is

generated (or synthesised) immediately.

- False negative: a wheel which, when rolled, doesn't have

a release event generated immediately. */

if (X11_XCheckIfEvent(display, &relevent, X11_IsWheelCheckIfEvent,

(XPointer) event)) {

/* by default, X11 only knows 5 buttons. on most 3 button + wheel mouse,

Button4 maps to wheel up, Button5 maps to wheel down. */

if (event->xbutton.button == Button4) {

*ticks = 1;

}

else if (event->xbutton.button == Button5) {

*ticks = -1;

}

return SDL_TRUE;

}

}

return SDL_FALSE;

}

/* Convert URI to local filename

return filename if possible, else NULL

*/

static char* X11_URIToLocal(char* uri) {

char *file = NULL;

SDL_bool local;

if (memcmp(uri,"file:/",6) == 0) uri += 6; /* local file? */

else if (strstr(uri,":/") != NULL) return file; /* wrong scheme */

local = uri[0] != '/' || ( uri[0] != '\0' && uri[1] == '/' );

/* got a hostname? */

if ( !local && uri[0] == '/' && uri[2] != '/' ) {

char* hostname_end = strchr( uri+1, '/' );

if ( hostname_end != NULL ) {

char hostname[ 257 ];

if ( gethostname( hostname, 255 ) == 0 ) {

hostname[ 256 ] = '\0';

if ( memcmp( uri+1, hostname, hostname_end - ( uri+1 )) == 0 ) {

uri = hostname_end + 1;

local = SDL_TRUE;

}

}

}

}

if ( local ) {

file = uri;

if ( uri[1] == '/' ) {

file++;

} else {

file--;

}

}

return file;

}

#if SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS

static void X11_HandleGenericEvent(SDL_VideoData *videodata,XEvent event)

{

/* event is a union, so cookie == &event, but this is type safe. */

XGenericEventCookie *cookie = &event.xcookie;

if (X11_XGetEventData(videodata->display, cookie)) {

X11_HandleXinput2Event(videodata, cookie);

X11_XFreeEventData(videodata->display, cookie);

}

}

#endif /* SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS */

static void

X11_DispatchFocusIn(SDL_WindowData *data)

{

#ifdef DEBUG_XEVENTS

printf("window %p: Dispatching FocusIn\n", data);

#endif

SDL_SetKeyboardFocus(data->window);

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

X11_XSetICFocus(data->ic);

}

#endif

}

static void

X11_DispatchFocusOut(SDL_WindowData *data)

{

#ifdef DEBUG_XEVENTS

printf("window %p: Dispatching FocusOut\n", data);

#endif

/* If another window has already processed a focus in, then don't try to

* remove focus here. Doing so will incorrectly remove focus from that

* window, and the focus lost event for this window will have already

* been dispatched anyway. */

if (data->window == SDL_GetKeyboardFocus()) {

SDL_SetKeyboardFocus(NULL);

}

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

X11_XUnsetICFocus(data->ic);

}

#endif

}

static void

X11_DispatchMapNotify(SDL_WindowData *data)

{

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

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

}

static void

X11_DispatchUnmapNotify(SDL_WindowData *data)

{

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

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

}

static void

X11_DispatchEvent(_THIS)

{

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

Display *display = videodata->display;

SDL_WindowData *data;

XEvent xevent;

int orig_event_type;

KeyCode orig_keycode;

XClientMessageEvent m;

int i;

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

X11_XNextEvent(display, &xevent);

/* Save the original keycode for dead keys, which are filtered out by

the XFilterEvent() call below.

*/

orig_event_type = xevent.type;

if (orig_event_type == KeyPress || orig_event_type == KeyRelease) {

orig_keycode = xevent.xkey.keycode;

} else {

orig_keycode = 0;

}

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

if (X11_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

if (orig_keycode) {

/* Make sure dead key press/release events are sent */

SDL_Scancode scancode = videodata->key_layout[orig_keycode];

if (orig_event_type == KeyPress) {

SDL_SendKeyboardKey(SDL_PRESSED, scancode);

} else {

SDL_SendKeyboardKey(SDL_RELEASED, scancode);

}

}

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.msg.x11.event = xevent;

SDL_SendSysWMEvent(&wmmsg);

}

#if SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS

if(xevent.type == GenericEvent) {

X11_HandleGenericEvent(videodata,xevent);

return;

}

#endif

#if 0

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

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

#endif

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;

}

switch (xevent.type) {

/* Gaining mouse coverage? */

case EnterNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: EnterNotify! (%d,%d,%d)\n", data,

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);

if (!SDL_GetMouse()->relative_mode) {

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

}

}

break;

/* Losing mouse coverage? */

case LeaveNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: LeaveNotify! (%d,%d,%d)\n", data,

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 (!SDL_GetMouse()->relative_mode) {

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

}

if (xevent.xcrossing.mode != NotifyGrab &&

xevent.xcrossing.mode != NotifyUngrab &&

xevent.xcrossing.detail != NotifyInferior) {

SDL_SetMouseFocus(NULL);

}

}

break;

/* Gaining input focus? */

case FocusIn:{

if (xevent.xfocus.mode == NotifyGrab || xevent.xfocus.mode == NotifyUngrab) {

/* Someone is handling a global hotkey, ignore it */

#ifdef DEBUG_XEVENTS

printf("window %p: FocusIn (NotifyGrab/NotifyUngrab, ignoring)\n", data);

#endif

break;

}

if (xevent.xfocus.detail == NotifyInferior) {

#ifdef DEBUG_XEVENTS

printf("window %p: FocusIn (NotifierInferior, ignoring)\n", data);

#endif

break;

}

#ifdef DEBUG_XEVENTS

printf("window %p: FocusIn!\n", data);

#endif

if (data->pending_focus == PENDING_FOCUS_OUT &&

data->window == SDL_GetKeyboardFocus()) {

/* We want to reset the keyboard here, because we may have

missed keyboard messages after our previous FocusOut.

*/

/* Actually, if we do this we clear the ALT key on Unity

because it briefly takes focus for their dashboard.

I think it's better to think the ALT key is held down

when it's not, then always lose the ALT modifier on Unity.

*/

/* SDL_ResetKeyboard(); */

}

data->pending_focus = PENDING_FOCUS_IN;

data->pending_focus_time = SDL_GetTicks() + PENDING_FOCUS_IN_TIME;

}

break;

/* Losing input focus? */

case FocusOut:{

if (xevent.xfocus.mode == NotifyGrab || xevent.xfocus.mode == NotifyUngrab) {

/* Someone is handling a global hotkey, ignore it */

#ifdef DEBUG_XEVENTS

printf("window %p: FocusOut (NotifyGrab/NotifyUngrab, ignoring)\n", data);

#endif

break;

}

if (xevent.xfocus.detail == NotifyInferior) {

/* We still have focus if a child gets focus */

#ifdef DEBUG_XEVENTS

printf("window %p: FocusOut (NotifierInferior, ignoring)\n", data);

#endif

break;

}

#ifdef DEBUG_XEVENTS

printf("window %p: FocusOut!\n", data);

#endif

data->pending_focus = PENDING_FOCUS_OUT;

data->pending_focus_time = SDL_GetTicks() + PENDING_FOCUS_OUT_TIME;

}

break;

/* Generated upon EnterWindow and FocusIn */

case KeymapNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: KeymapNotify!\n", data);

#endif

/* FIXME:

X11_SetKeyboardState(SDL_Display, xevent.xkeymap.key_vector);

*/

}

break;

/* Has the keyboard layout changed? */

case MappingNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: MappingNotify!\n", data);

#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("window %p: KeyPress (X11 keycode = 0x%X)\n", data, xevent.xkey.keycode);

#endif

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

#if 1

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

int min_keycode, max_keycode;

X11_XDisplayKeycodes(display, &min_keycode, &max_keycode);

#if SDL_VIDEO_DRIVER_X11_HAS_XKBKEYCODETOKEYSYM

keysym = X11_XkbKeycodeToKeysym(display, keycode, 0, 0);

#else

keysym = XKeycodeToKeysym(display, keycode, 0);

#endif

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%lX (%s).\n",

keycode, keycode - min_keycode, keysym,

X11_XKeysymToString(keysym));

}

#endif

/* */

SDL_zero(text);

#ifdef X_HAVE_UTF8_STRING

if (data->ic) {

X11_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("window %p: KeyRelease (X11 keycode = 0x%X)\n", data, xevent.xkey.keycode);

#endif

if (X11_KeyRepeat(display, &xevent)) {

/* We're about to get a repeated key down, ignore the key up */

break;

}

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

}

break;

/* Have we been iconified? */

case UnmapNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: UnmapNotify!\n", data);

#endif

X11_DispatchUnmapNotify(data);

}

break;

/* Have we been restored? */

case MapNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: MapNotify!\n", data);

#endif

X11_DispatchMapNotify(data);

}

break;

/* Have we been resized or moved? */

case ConfigureNotify:{

#ifdef DEBUG_XEVENTS

printf("window %p: ConfigureNotify! (position: %d,%d, size: %dx%d)\n", data,

xevent.xconfigure.x, xevent.xconfigure.y,

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

#endif

long border_left = 0;

long border_top = 0;

if (data->xwindow) {

Atom _net_frame_extents = X11_XInternAtom(display, "_NET_FRAME_EXTENTS", 0);

if (X11_XGetWindowProperty(display, data->xwindow,

_net_frame_extents, 0, 16, 0,

XA_CARDINAL, &type, &format,

&nitems, &bytes_after, &property) == Success) {

if (type != None && nitems == 4)

{

border_left = ((long*)property)[0];

border_top = ((long*)property)[2];

}

X11_XFree(property);

}

}

if (xevent.xconfigure.x != data->last_xconfigure.x ||

xevent.xconfigure.y != data->last_xconfigure.y) {

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_MOVED,

xevent.xconfigure.x - border_left,

xevent.xconfigure.y - border_top);

}

if (xevent.xconfigure.width != data->last_xconfigure.width ||

xevent.xconfigure.height != data->last_xconfigure.height) {

SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_RESIZED,

xevent.xconfigure.width,

xevent.xconfigure.height);

}

data->last_xconfigure = xevent.xconfigure;

}

break;

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

case ClientMessage:{

int xdnd_version=0;

if (xevent.xclient.message_type == videodata->XdndEnter) {

SDL_bool use_list = xevent.xclient.data.l[1] & 1;

data->xdnd_source = xevent.xclient.data.l[0];

xdnd_version = ( xevent.xclient.data.l[1] >> 24);

if (use_list) {

/* fetch conversion targets */

SDL_x11Prop p;

X11_ReadProperty(&p, display, data->xdnd_source, videodata->XdndTypeList);

/* pick one */

data->xdnd_req = X11_PickTarget(display, (Atom*)p.data, p.count);

X11_XFree(p.data);

} else {

/* pick from list of three */

data->xdnd_req = X11_PickTargetFromAtoms(display, xevent.xclient.data.l[2], xevent.xclient.data.l[3], xevent.xclient.data.l[4]);

}

}

else if (xevent.xclient.message_type == videodata->XdndPosition) {

/* reply with status */

memset(&m, 0, sizeof(XClientMessageEvent));

m.type = ClientMessage;

m.display = xevent.xclient.display;

m.window = xevent.xclient.data.l[0];

m.message_type = videodata->XdndStatus;

m.format=32;

m.data.l[0] = data->xwindow;

m.data.l[1] = (data->xdnd_req != None);

m.data.l[2] = 0; /* specify an empty rectangle */

m.data.l[3] = 0;

m.data.l[4] = videodata->XdndActionCopy; /* we only accept copying anyway */

X11_XSendEvent(display, xevent.xclient.data.l[0], False, NoEventMask, (XEvent*)&m);

X11_XFlush(display);

}

else if(xevent.xclient.message_type == videodata->XdndDrop) {

if (data->xdnd_req == None) {

/* say again - not interested! */

memset(&m, 0, sizeof(XClientMessageEvent));

m.type = ClientMessage;

m.display = xevent.xclient.display;

m.window = xevent.xclient.data.l[0];

m.message_type = videodata->XdndFinished;

m.format=32;

m.data.l[0] = data->xwindow;

m.data.l[1] = 0;

m.data.l[2] = None; /* fail! */

X11_XSendEvent(display, xevent.xclient.data.l[0], False, NoEventMask, (XEvent*)&m);

} else {

/* convert */

if(xdnd_version >= 1) {

X11_XConvertSelection(display, videodata->XdndSelection, data->xdnd_req, videodata->PRIMARY, data->xwindow, xevent.xclient.data.l[2]);

} else {

X11_XConvertSelection(display, videodata->XdndSelection, data->xdnd_req, videodata->PRIMARY, data->xwindow, CurrentTime);

}

}

}

else if ((xevent.xclient.message_type == videodata->WM_PROTOCOLS) &&

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

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

Window root = DefaultRootWindow(display);

#ifdef DEBUG_XEVENTS

printf("window %p: _NET_WM_PING\n", data);

#endif

xevent.xclient.window = root;

X11_XSendEvent(display, root, False, SubstructureRedirectMask | SubstructureNotifyMask, &xevent);

break;

}

else if ((xevent.xclient.message_type == videodata->WM_PROTOCOLS) &&

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

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

#ifdef DEBUG_XEVENTS

printf("window %p: WM_DELETE_WINDOW\n", data);

#endif

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

break;

}

}

break;

/* Do we need to refresh ourselves? */

case Expose:{

#ifdef DEBUG_XEVENTS

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

#endif

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

}

break;

case MotionNotify:{

SDL_Mouse *mouse = SDL_GetMouse();

if(!mouse->relative_mode || mouse->relative_mode_warp) {

#ifdef DEBUG_MOTION

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

#endif

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

}

}

break;

case ButtonPress:{

int ticks = 0;

if (X11_IsWheelEvent(display,&xevent,&ticks)) {

SDL_SendMouseWheel(data->window, 0, 0, ticks);

} else {

SDL_SendMouseButton(data->window, 0, SDL_PRESSED, xevent.xbutton.button);

}

}

break;

case ButtonRelease:{

SDL_SendMouseButton(data->window, 0, SDL_RELEASED, xevent.xbutton.button);

}

break;

case PropertyNotify:{

#ifdef DEBUG_XEVENTS

unsigned char *propdata;

int status, real_format;

Atom real_type;

unsigned long items_read, items_left, i;

char *name = X11_XGetAtomName(display, xevent.xproperty.atom);

if (name) {

printf("window %p: PropertyNotify: %s %s\n", data, name, (xevent.xproperty.state == PropertyDelete) ? "deleted" : "changed");

X11_XFree(name);

}

status = X11_XGetWindowProperty(display, data->xwindow, xevent.xproperty.atom, 0L, 8192L, False, AnyPropertyType, &real_type, &real_format, &items_read, &items_left, &propdata);

if (status == Success && items_read > 0) {

if (real_type == XA_INTEGER) {

int *values = (int *)propdata;

printf("{");

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

printf(" %d", values[i]);

}

printf(" }\n");

} else if (real_type == XA_CARDINAL) {

if (real_format == 32) {

Uint32 *values = (Uint32 *)propdata;

printf("{");

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

printf(" %d", values[i]);

}

printf(" }\n");

} else if (real_format == 16) {

Uint16 *values = (Uint16 *)propdata;

printf("{");

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

printf(" %d", values[i]);

}

printf(" }\n");

} else if (real_format == 8) {

Uint8 *values = (Uint8 *)propdata;

printf("{");

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

printf(" %d", values[i]);

}

printf(" }\n");

}

} else if (real_type == XA_STRING ||

real_type == videodata->UTF8_STRING) {

printf("{ \"%s\" }\n", propdata);

} else if (real_type == XA_ATOM) {

Atom *atoms = (Atom *)propdata;

printf("{");

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

char *name = X11_XGetAtomName(display, atoms[i]);

if (name) {

printf(" %s", name);

X11_XFree(name);

}

}

printf(" }\n");

} else {

char *name = X11_XGetAtomName(display, real_type);

printf("Unknown type: %ld (%s)\n", real_type, name ? name : "UNKNOWN");

if (name) {

X11_XFree(name);

}

}

}

if (status == Success) {

X11_XFree(propdata);

}

#endif /* DEBUG_XEVENTS */

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

/* Get the new state from the window manager.

Compositing window managers can alter visibility of windows

without ever mapping / unmapping them, so we handle that here,

because they use the NETWM protocol to notify us of changes.

*/

Uint32 flags = X11_GetNetWMState(_this, xevent.xproperty.window);

if ((flags^data->window->flags) & SDL_WINDOW_HIDDEN) {

if (flags & SDL_WINDOW_HIDDEN) {

X11_DispatchUnmapNotify(data);

} else {

X11_DispatchMapNotify(data);

}

}

}

}

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("window %p: SelectionRequest (requestor = %ld, target = %ld)\n", data,

req->requestor, req->target);

#endif

SDL_zero(sevent);

sevent.xany.type = SelectionNotify;

sevent.xselection.selection = req->selection;

sevent.xselection.target = None;

sevent.xselection.property = None;

sevent.xselection.requestor = req->requestor;

sevent.xselection.time = req->time;

if (X11_XGetWindowProperty(display, DefaultRootWindow(display),

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

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

&overflow, &seln_data) == Success) {

Atom XA_TARGETS = X11_XInternAtom(display, "TARGETS", 0);

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

X11_XChangeProperty(display, req->requestor, req->property,

sevent.xselection.target, seln_format, PropModeReplace,

seln_data, nbytes);

sevent.xselection.property = req->property;

} else if (XA_TARGETS == req->target) {

Atom SupportedFormats[] = { sevent.xselection.target, XA_TARGETS };

X11_XChangeProperty(display, req->requestor, req->property,

XA_ATOM, 32, PropModeReplace,

(unsigned char*)SupportedFormats,

sizeof(SupportedFormats)/sizeof(*SupportedFormats));

sevent.xselection.property = req->property;

}

X11_XFree(seln_data);

}

X11_XSendEvent(display, req->requestor, False, 0, &sevent);

X11_XSync(display, False);

}

break;

case SelectionNotify: {

#ifdef DEBUG_XEVENTS

printf("window %p: SelectionNotify (requestor = %ld, target = %ld)\n", data,

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

#endif

Atom target = xevent.xselection.target;

if (target == data->xdnd_req) {

/* read data */

SDL_x11Prop p;

X11_ReadProperty(&p, display, data->xwindow, videodata->PRIMARY);

if (p.format == 8) {

SDL_bool expect_lf = SDL_FALSE;

char *start = NULL;

char *scan = (char*)p.data;

char *fn;

char *uri;

int length = 0;

while (p.count--) {

if (!expect_lf) {

if (*scan == 0x0D) {

expect_lf = SDL_TRUE;

}

if (start == NULL) {

start = scan;

length = 0;

}

length++;

} else {

if (*scan == 0x0A && length > 0) {

uri = SDL_malloc(length--);

SDL_memcpy(uri, start, length);

uri[length] = '\0';

fn = X11_URIToLocal(uri);

if (fn) {

SDL_SendDropFile(fn);

}

SDL_free(uri);

}

expect_lf = SDL_FALSE;

start = NULL;

}

scan++;

}

}

X11_XFree(p.data);

/* send reply */

SDL_memset(&m, 0, sizeof(XClientMessageEvent));

m.type = ClientMessage;

m.display = display;

m.window = data->xdnd_source;

m.message_type = videodata->XdndFinished;

m.format = 32;

m.data.l[0] = data->xwindow;

m.data.l[1] = 1;

m.data.l[2] = videodata->XdndActionCopy;

X11_XSendEvent(display, data->xdnd_source, False, NoEventMask, (XEvent*)&m);

X11_XSync(display, False);

} else {

videodata->selection_waiting = SDL_FALSE;

}

}

break;

default:{

#ifdef DEBUG_XEVENTS

printf("window %p: Unhandled event %d\n", data, xevent.type);

#endif

}

break;

}

}

static void

X11_HandleFocusChanges(_THIS)

{

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

int i;

if (videodata && videodata->windowlist) {

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

SDL_WindowData *data = videodata->windowlist[i];

if (data && data->pending_focus != PENDING_FOCUS_NONE) {

Uint32 now = SDL_GetTicks();

if (SDL_TICKS_PASSED(now, data->pending_focus_time)) {

if ( data->pending_focus == PENDING_FOCUS_IN ) {

X11_DispatchFocusIn(data);

} else {

X11_DispatchFocusOut(data);

}

data->pending_focus = PENDING_FOCUS_NONE;

}

}

}

}

}

/* Ack! X11_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 */

X11_XFlush(display);

if (X11_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 (X11_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 ||