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1811 lines (1605 loc) · 62.6 KB
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/*
Simple DirectMedia Layer
Copyright (C) 1997-2024 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"
#ifdef 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 "SDL_x11xfixes.h"
#include "../../core/unix/SDL_poll.h"
#include "../../events/SDL_events_c.h"
#include "../../events/SDL_mouse_c.h"
#include "../../events/SDL_touch_c.h"
#include "../../SDL_utils_c.h"
#include "SDL_hints.h"
#include "SDL_timer.h"
#include "SDL_syswm.h"
#include <stdio.h>
/*#define DEBUG_XEVENTS*/
#ifndef _NET_WM_MOVERESIZE_SIZE_TOPLEFT
#define _NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_TOP
#define _NET_WM_MOVERESIZE_SIZE_TOP 1
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_TOPRIGHT
#define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_RIGHT
#define _NET_WM_MOVERESIZE_SIZE_RIGHT 3
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_BOTTOM
#define _NET_WM_MOVERESIZE_SIZE_BOTTOM 5
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT
#define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
#endif
#ifndef _NET_WM_MOVERESIZE_SIZE_LEFT
#define _NET_WM_MOVERESIZE_SIZE_LEFT 7
#endif
#ifndef _NET_WM_MOVERESIZE_MOVE
#define _NET_WM_MOVERESIZE_MOVE 8
#endif
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) {
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 ((SDL_strcmp("text/uri-list", name) == 0) || (SDL_strcmp("text/plain", 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);
}
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 SDL_bool X11_IsWheelEvent(Display *display, XEvent *event, int *xticks, int *yticks)
{
/* according to the xlib docs, no specific mouse wheel events exist.
However, the defacto standard is that the vertical wheel is X buttons
4 (up) and 5 (down) and a horizontal wheel is 6 (left) and 7 (right). */
/* Xlib defines "Button1" through 5, so we just use literals here. */
switch (event->xbutton.button) {
case 4:
*yticks = 1;
return SDL_TRUE;
case 5:
*yticks = -1;
return SDL_TRUE;
case 6:
*xticks = 1;
return SDL_TRUE;
case 7:
*xticks = -1;
return SDL_TRUE;
default:
break;
}
return SDL_FALSE;
}
/* Decodes URI escape sequences in string buf of len bytes
(excluding the terminating NULL byte) in-place. Since
URI-encoded characters take three times the space of
normal characters, this should not be an issue.
Returns the number of decoded bytes that wound up in
the buffer, excluding the terminating NULL byte.
The buffer is guaranteed to be NULL-terminated but
may contain embedded NULL bytes.
On error, -1 is returned.
*/
static int X11_URIDecode(char *buf, int len)
{
int ri, wi, di;
char decode = '\0';
if (!buf || len < 0) {
errno = EINVAL;
return -1;
}
if (len == 0) {
len = SDL_strlen(buf);
}
for (ri = 0, wi = 0, di = 0; ri < len && wi < len; ri += 1) {
if (di == 0) {
/* start decoding */
if (buf[ri] == '%') {
decode = '\0';
di += 1;
continue;
}
/* normal write */
buf[wi] = buf[ri];
wi += 1;
continue;
} else if (di == 1 || di == 2) {
char off = '\0';
char isa = buf[ri] >= 'a' && buf[ri] <= 'f';
char isA = buf[ri] >= 'A' && buf[ri] <= 'F';
char isn = buf[ri] >= '0' && buf[ri] <= '9';
if (!(isa || isA || isn)) {
/* not a hexadecimal */
int sri;
for (sri = ri - di; sri <= ri; sri += 1) {
buf[wi] = buf[sri];
wi += 1;
}
di = 0;
continue;
}
/* itsy bitsy magicsy */
if (isn) {
off = 0 - '0';
} else if (isa) {
off = 10 - 'a';
} else if (isA) {
off = 10 - 'A';
}
decode |= (buf[ri] + off) << (2 - di) * 4;
if (di == 2) {
buf[wi] = decode;
wi += 1;
di = 0;
} else {
di += 1;
}
continue;
}
}
buf[wi] = '\0';
return wi;
}
/* Convert URI to local filename
return filename if possible, else NULL
*/
static char *X11_URIToLocal(char *uri)
{
char *file = NULL;
SDL_bool local;
if (SDL_memcmp(uri, "file:/", 6) == 0) {
uri += 6; /* local file? */
} else if (SDL_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 = SDL_strchr(uri + 1, '/');
if (hostname_end) {
char hostname[257];
if (gethostname(hostname, 255) == 0) {
hostname[256] = '\0';
if (SDL_memcmp(uri + 1, hostname, hostname_end - (uri + 1)) == 0) {
uri = hostname_end + 1;
local = SDL_TRUE;
}
}
}
}
if (local) {
file = uri;
/* Convert URI escape sequences to real characters */
X11_URIDecode(file, 0);
if (uri[1] == '/') {
file++;
} else {
file--;
}
}
return file;
}
#ifdef SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS
static void X11_HandleGenericEvent(SDL_VideoData *videodata, XEvent *xev)
{
/* event is a union, so cookie == &event, but this is type safe. */
XGenericEventCookie *cookie = &xev->xcookie;
if (X11_XGetEventData(videodata->display, cookie)) {
X11_HandleXinput2Event(videodata, cookie);
/* Send a SDL_SYSWMEVENT if the application wants them.
* Since event data is only available until XFreeEventData is called,
* the *only* way for an application to access it is to register an event filter/watcher
* and do all the processing on the SDL_SYSWMEVENT inside the callback. */
if (SDL_GetEventState(SDL_SYSWMEVENT) == SDL_ENABLE) {
SDL_SysWMmsg wmmsg;
SDL_VERSION(&wmmsg.version);
wmmsg.subsystem = SDL_SYSWM_X11;
wmmsg.msg.x11.event = *xev;
SDL_SendSysWMEvent(&wmmsg);
}
X11_XFreeEventData(videodata->display, cookie);
}
}
#endif /* SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS */
static unsigned X11_GetNumLockModifierMask(_THIS)
{
SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
Display *display = viddata->display;
unsigned num_mask = 0;
int i, j;
XModifierKeymap *xmods;
unsigned n;
xmods = X11_XGetModifierMapping(display);
n = xmods->max_keypermod;
for (i = 3; i < 8; i++) {
for (j = 0; j < n; j++) {
KeyCode kc = xmods->modifiermap[i * n + j];
if (viddata->key_layout[kc] == SDL_SCANCODE_NUMLOCKCLEAR) {
num_mask = 1 << i;
break;
}
}
}
X11_XFreeModifiermap(xmods);
return num_mask;
}
static unsigned X11_GetScrollLockModifierMask(_THIS)
{
SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
Display *display = viddata->display;
unsigned num_mask = 0;
int i, j;
XModifierKeymap *xmods;
unsigned n;
xmods = X11_XGetModifierMapping(display);
n = xmods->max_keypermod;
for (i = 3; i < 8; i++) {
for (j = 0; j < n; j++) {
KeyCode kc = xmods->modifiermap[i * n + j];
if (viddata->key_layout[kc] == SDL_SCANCODE_SCROLLLOCK) {
num_mask = 1 << i;
break;
}
}
}
X11_XFreeModifiermap(xmods);
return num_mask;
}
void X11_ReconcileKeyboardState(_THIS)
{
SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
Display *display = viddata->display;
char keys[32];
int keycode;
Window junk_window;
int x, y;
unsigned int mask;
const Uint8 *keyboardState;
X11_XQueryKeymap(display, keys);
/* Sync up the keyboard modifier state */
if (X11_XQueryPointer(display, DefaultRootWindow(display), &junk_window, &junk_window, &x, &y, &x, &y, &mask)) {
SDL_ToggleModState(KMOD_CAPS, (mask & LockMask) ? SDL_TRUE : SDL_FALSE);
SDL_ToggleModState(KMOD_NUM, (mask & X11_GetNumLockModifierMask(_this)) ? SDL_TRUE : SDL_FALSE);
SDL_ToggleModState(KMOD_SCROLL, (mask & X11_GetScrollLockModifierMask(_this)) ? SDL_TRUE : SDL_FALSE);
}
keyboardState = SDL_GetKeyboardState(0);
for (keycode = 0; keycode < SDL_arraysize(viddata->key_layout); ++keycode) {
SDL_Scancode scancode = viddata->key_layout[keycode];
SDL_bool x11KeyPressed = (keys[keycode / 8] & (1 << (keycode % 8))) != 0;
SDL_bool sdlKeyPressed = keyboardState[scancode] == SDL_PRESSED;
if (x11KeyPressed && !sdlKeyPressed) {
/* Only update modifier state for keys that are pressed in another application */
switch (SDL_GetKeyFromScancode(scancode)) {
case SDLK_LCTRL:
case SDLK_RCTRL:
case SDLK_LSHIFT:
case SDLK_RSHIFT:
case SDLK_LALT:
case SDLK_RALT:
case SDLK_LGUI:
case SDLK_RGUI:
case SDLK_MODE:
SDL_SendKeyboardKey(SDL_PRESSED, scancode);
break;
default:
break;
}
} else if (!x11KeyPressed && sdlKeyPressed) {
SDL_SendKeyboardKey(SDL_RELEASED, scancode);
}
}
}
static void X11_DispatchFocusIn(_THIS, SDL_WindowData *data)
{
#ifdef DEBUG_XEVENTS
printf("window %p: Dispatching FocusIn\n", data);
#endif
SDL_SetKeyboardFocus(data->window);
X11_ReconcileKeyboardState(_this);
#ifdef X_HAVE_UTF8_STRING
if (data->ic) {
X11_XSetICFocus(data->ic);
}
#endif
#ifdef SDL_USE_IME
SDL_IME_SetFocus(SDL_TRUE);
#endif
if (data->flashing_window) {
X11_FlashWindow(_this, data->window, SDL_FLASH_CANCEL);
}
}
static void X11_DispatchFocusOut(_THIS, 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
#ifdef SDL_USE_IME
SDL_IME_SetFocus(SDL_FALSE);
#endif
}
static void X11_DispatchMapNotify(SDL_WindowData *data)
{
SDL_Window *window = data->window;
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESTORED, 0, 0);
SDL_SendWindowEvent(window, SDL_WINDOWEVENT_SHOWN, 0, 0);
if (!(window->flags & SDL_WINDOW_HIDDEN) && (window->flags & SDL_WINDOW_INPUT_FOCUS)) {
SDL_UpdateWindowGrab(window);
}
}
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 InitiateWindowMove(_THIS, const SDL_WindowData *data, const SDL_Point *point)
{
SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
SDL_Window *window = data->window;
Display *display = viddata->display;
XEvent evt;
/* !!! FIXME: we need to regrab this if necessary when the drag is done. */
X11_XUngrabPointer(display, 0L);
X11_XFlush(display);
evt.xclient.type = ClientMessage;
evt.xclient.window = data->xwindow;
evt.xclient.message_type = X11_XInternAtom(display, "_NET_WM_MOVERESIZE", True);
evt.xclient.format = 32;
evt.xclient.data.l[0] = (size_t)window->x + point->x;
evt.xclient.data.l[1] = (size_t)window->y + point->y;
evt.xclient.data.l[2] = _NET_WM_MOVERESIZE_MOVE;
evt.xclient.data.l[3] = Button1;
evt.xclient.data.l[4] = 0;
X11_XSendEvent(display, DefaultRootWindow(display), False, SubstructureRedirectMask | SubstructureNotifyMask, &evt);
X11_XSync(display, 0);
}
static void InitiateWindowResize(_THIS, const SDL_WindowData *data, const SDL_Point *point, int direction)
{
SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata;
SDL_Window *window = data->window;
Display *display = viddata->display;
XEvent evt;
if (direction < _NET_WM_MOVERESIZE_SIZE_TOPLEFT || direction > _NET_WM_MOVERESIZE_SIZE_LEFT) {
return;
}
/* !!! FIXME: we need to regrab this if necessary when the drag is done. */
X11_XUngrabPointer(display, 0L);
X11_XFlush(display);
evt.xclient.type = ClientMessage;
evt.xclient.window = data->xwindow;
evt.xclient.message_type = X11_XInternAtom(display, "_NET_WM_MOVERESIZE", True);
evt.xclient.format = 32;
evt.xclient.data.l[0] = (size_t)window->x + point->x;
evt.xclient.data.l[1] = (size_t)window->y + point->y;
evt.xclient.data.l[2] = direction;
evt.xclient.data.l[3] = Button1;
evt.xclient.data.l[4] = 0;
X11_XSendEvent(display, DefaultRootWindow(display), False, SubstructureRedirectMask | SubstructureNotifyMask, &evt);
X11_XSync(display, 0);
}
static SDL_bool ProcessHitTest(_THIS, const SDL_WindowData *data, const XEvent *xev)
{
SDL_Window *window = data->window;
if (window->hit_test) {
const SDL_Point point = { xev->xbutton.x, xev->xbutton.y };
const SDL_HitTestResult rc = window->hit_test(window, &point, window->hit_test_data);
static const int directions[] = {
_NET_WM_MOVERESIZE_SIZE_TOPLEFT, _NET_WM_MOVERESIZE_SIZE_TOP,
_NET_WM_MOVERESIZE_SIZE_TOPRIGHT, _NET_WM_MOVERESIZE_SIZE_RIGHT,
_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT, _NET_WM_MOVERESIZE_SIZE_BOTTOM,
_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT, _NET_WM_MOVERESIZE_SIZE_LEFT
};
switch (rc) {
case SDL_HITTEST_DRAGGABLE:
InitiateWindowMove(_this, data, &point);
return SDL_TRUE;
case SDL_HITTEST_RESIZE_TOPLEFT:
case SDL_HITTEST_RESIZE_TOP:
case SDL_HITTEST_RESIZE_TOPRIGHT:
case SDL_HITTEST_RESIZE_RIGHT:
case SDL_HITTEST_RESIZE_BOTTOMRIGHT:
case SDL_HITTEST_RESIZE_BOTTOM:
case SDL_HITTEST_RESIZE_BOTTOMLEFT:
case SDL_HITTEST_RESIZE_LEFT:
InitiateWindowResize(_this, data, &point, directions[rc - SDL_HITTEST_RESIZE_TOPLEFT]);
return SDL_TRUE;
default:
return SDL_FALSE;
}
}
return SDL_FALSE;
}
static void X11_UpdateUserTime(SDL_WindowData *data, const unsigned long latest)
{
if (latest && (latest != data->user_time)) {
SDL_VideoData *videodata = data->videodata;
Display *display = videodata->display;
X11_XChangeProperty(display, data->xwindow, videodata->_NET_WM_USER_TIME,
XA_CARDINAL, 32, PropModeReplace,
(const unsigned char *)&latest, 1);
#ifdef DEBUG_XEVENTS
printf("window %p: updating _NET_WM_USER_TIME to %lu\n", data, latest);
#endif
data->user_time = latest;
}
}
static void X11_HandleClipboardEvent(_THIS, const XEvent *xevent)
{
int i;
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
Display *display = videodata->display;
SDL_assert(videodata->clipboard_window != None);
SDL_assert(xevent->xany.window == videodata->clipboard_window);
switch (xevent->type) {
/* Copy the selection from our own CUTBUFFER to the requested property */
case SelectionRequest:
{
const XSelectionRequestEvent *req = &xevent->xselectionrequest;
XEvent sevent;
int seln_format, mime_formats;
unsigned long nbytes;
unsigned long overflow;
unsigned char *seln_data;
Atom supportedFormats[SDL_X11_CLIPBOARD_MIME_TYPE_MAX + 1];
Atom XA_TARGETS = X11_XInternAtom(display, "TARGETS", 0);
#ifdef DEBUG_XEVENTS
printf("window CLIPBOARD: SelectionRequest (requestor = %ld, target = %ld)\n",
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; /* tell them no by default */
sevent.xselection.requestor = req->requestor;
sevent.xselection.time = req->time;
/* !!! FIXME: We were probably storing this on the root window
because an SDL window might go away...? but we don't have to do
this now (or ever, really). */
if (req->target == XA_TARGETS) {
supportedFormats[0] = XA_TARGETS;
mime_formats = 1;
for (i = 0; i < SDL_X11_CLIPBOARD_MIME_TYPE_MAX; ++i) {
supportedFormats[mime_formats++] = X11_GetSDLCutBufferClipboardExternalFormat(display, i);
}
X11_XChangeProperty(display, req->requestor, req->property,
XA_ATOM, 32, PropModeReplace,
(unsigned char *)supportedFormats,
mime_formats);
sevent.xselection.property = req->property;
sevent.xselection.target = XA_TARGETS;
} else {
for (i = 0; i < SDL_X11_CLIPBOARD_MIME_TYPE_MAX; ++i) {
if (X11_GetSDLCutBufferClipboardExternalFormat(display, i) != req->target) {
continue;
}
if (X11_XGetWindowProperty(display, DefaultRootWindow(display),
X11_GetSDLCutBufferClipboardType(display, i, req->selection), 0, INT_MAX / 4, False, X11_GetSDLCutBufferClipboardInternalFormat(display, i),
&sevent.xselection.target, &seln_format, &nbytes,
&overflow, &seln_data) == Success) {
if (seln_format != None) {
X11_XChangeProperty(display, req->requestor, req->property,
sevent.xselection.target, seln_format, PropModeReplace,
seln_data, nbytes);
sevent.xselection.property = req->property;
X11_XFree(seln_data);
break;
} else {
X11_XFree(seln_data);
}
}
}
}
X11_XSendEvent(display, req->requestor, False, 0, &sevent);
X11_XSync(display, False);
} break;
case SelectionNotify:
{
#ifdef DEBUG_XEVENTS
printf("window CLIPBOARD: SelectionNotify (requestor = %ld, target = %ld)\n",
xevent->xselection.requestor, xevent->xselection.target);
#endif
videodata->selection_waiting = SDL_FALSE;
} break;
case SelectionClear:
{
/* !!! FIXME: cache atoms */
Atom XA_CLIPBOARD = X11_XInternAtom(display, "CLIPBOARD", 0);
#ifdef DEBUG_XEVENTS
printf("window CLIPBOARD: SelectionClear (requestor = %ld, target = %ld)\n",
xevent->xselection.requestor, xevent->xselection.target);
#endif
if (xevent->xselectionclear.selection == XA_PRIMARY ||
(XA_CLIPBOARD != None && xevent->xselectionclear.selection == XA_CLIPBOARD)) {
SDL_SendClipboardUpdate();
}
} break;
}
}
static Bool isMapNotify(Display *display, XEvent *ev, XPointer arg)
{
XUnmapEvent *unmap;
unmap = (XUnmapEvent *)arg;
return ev->type == MapNotify &&
ev->xmap.window == unmap->window &&
ev->xmap.serial == unmap->serial;
}
static Bool isReparentNotify(Display *display, XEvent *ev, XPointer arg)
{
XUnmapEvent *unmap;
unmap = (XUnmapEvent *)arg;
return ev->type == ReparentNotify &&
ev->xreparent.window == unmap->window &&
ev->xreparent.serial == unmap->serial;
}
static SDL_bool IsHighLatin1(const char *string, int length)
{
while (length-- > 0) {
Uint8 ch = (Uint8)*string;
if (ch >= 0x80) {
return SDL_TRUE;
}
++string;
}
return SDL_FALSE;
}
static int XLookupStringAsUTF8(XKeyEvent *event_struct, char *buffer_return, int bytes_buffer, KeySym *keysym_return, XComposeStatus *status_in_out)
{
int result = X11_XLookupString(event_struct, buffer_return, bytes_buffer, keysym_return, status_in_out);
if (IsHighLatin1(buffer_return, result)) {
char *utf8_text = SDL_iconv_string("UTF-8", "ISO-8859-1", buffer_return, result + 1);
if (utf8_text) {
SDL_strlcpy(buffer_return, utf8_text, bytes_buffer);
SDL_free(utf8_text);
return SDL_strlen(buffer_return);
} else {
return 0;
}
}
return result;
}
void X11_GetBorderValues(void /* SDL_WindowData */ *data_)
{
SDL_WindowData *data = (SDL_WindowData *)data_;
SDL_VideoData *videodata = data->videodata;
Display *display = videodata->display;
Atom type;
int format;
unsigned long nitems, bytes_after;
unsigned char *property;
if (X11_XGetWindowProperty(display, data->xwindow, videodata->_NET_FRAME_EXTENTS, 0, 16, 0, XA_CARDINAL, &type, &format, &nitems, &bytes_after, &property) == Success) {
if (type != None && nitems == 4) {
data->border_left = (int)((long *)property)[0];
data->border_right = (int)((long *)property)[1];
data->border_top = (int)((long *)property)[2];
data->border_bottom = (int)((long *)property)[3];
}
X11_XFree(property);
#ifdef DEBUG_XEVENTS
printf("New _NET_FRAME_EXTENTS: left=%d right=%d, top=%d, bottom=%d\n", data->border_left, data->border_right, data->border_top, data->border_bottom);
#endif
}
}
static void X11_DispatchEvent(_THIS, XEvent *xevent)
{
SDL_VideoData *videodata = (SDL_VideoData *)_this->driverdata;
Display *display;
SDL_WindowData *data;
int orig_event_type;
KeyCode orig_keycode;
XClientMessageEvent m;
int i;
SDL_assert(videodata != NULL);
display = videodata->display;
/* 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
/* Make sure dead key press/release events are sent */
/* But only if we're using one of the DBus IMEs, otherwise
some XIM IMEs will generate duplicate events */
if (orig_keycode) {
#if defined(HAVE_IBUS_IBUS_H) || defined(HAVE_FCITX)
SDL_Scancode scancode = videodata->key_layout[orig_keycode];
videodata->filter_code = orig_keycode;
videodata->filter_time = xevent->xkey.time;
if (orig_event_type == KeyPress) {
SDL_SendKeyboardKey(SDL_PRESSED, scancode);
} else {
SDL_SendKeyboardKey(SDL_RELEASED, scancode);
}
#endif
}
return;
}
CF10
#ifdef SDL_VIDEO_DRIVER_X11_SUPPORTS_GENERIC_EVENTS
if (xevent->type == GenericEvent) {
X11_HandleGenericEvent(videodata, xevent);
return;
}
#endif
#ifdef SDL_VIDEO_DRIVER_X11_XRANDR
if (videodata->xrandr_event_base && (xevent->type == (videodata->xrandr_event_base + RRNotify))) {
X11_HandleXRandREvent(_this, xevent);
}
#endif
/* 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 0
printf("type = %d display = %d window = %d\n",
xevent->type, xevent->xany.display, xevent->xany.window);
#endif
#ifdef SDL_VIDEO_DRIVER_X11_XFIXES
if (SDL_X11_HAVE_XFIXES &&
xevent->type == X11_GetXFixesSelectionNotifyEvent()) {
XFixesSelectionNotifyEvent *ev = (XFixesSelectionNotifyEvent *) xevent;
/* !!! FIXME: cache atoms */
Atom XA_CLIPBOARD = X11_XInternAtom(display, "CLIPBOARD", 0);
#ifdef DEBUG_XEVENTS
printf("window CLIPBOARD: XFixesSelectionNotify (selection = %s)\n",
X11_XGetAtomName(display, ev->selection));
#endif
if (ev->selection == XA_PRIMARY ||
(XA_CLIPBOARD != None && ev->selection == XA_CLIPBOARD)) {
SDL_SendClipboardUpdate();
return;
}
}
#endif /* SDL_VIDEO_DRIVER_X11_XFIXES */
if ((videodata->clipboard_window != None) &&
(videodata->clipboard_window == xevent->xany.window)) {
X11_HandleClipboardEvent(_this, xevent);
return;
}
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) {
/* The window for KeymapNotify, etc events is 0 */
if (xevent->type == KeymapNotify) {
#ifdef DEBUG_XEVENTS
printf("window %p: KeymapNotify!\n", data);
#endif
if (SDL_GetKeyboardFocus() != NULL) {
X11_ReconcileKeyboardState(_this);
}
} else if (xevent->type == MappingNotify) {
/* Has the keyboard layout changed? */
const int request = xevent->xmapping.request;
#ifdef DEBUG_XEVENTS
printf("window %p: MappingNotify!\n", data);
#endif
if ((request == MappingKeyboard) || (request == MappingModifier)) {
X11_XRefreshKeyboardMapping(&xevent->xmapping);
}
X11_UpdateKeymap(_this, SDL_TRUE);
} else if (xevent->type == PropertyNotify && videodata && videodata->windowlist) {
char *name_of_atom = X11_XGetAtomName(display, xevent->xproperty.atom);
if (SDL_strncmp(name_of_atom, "_ICC_PROFILE", sizeof("_ICC_PROFILE") - 1) == 0) {
XWindowAttributes attrib;
int screennum;
for (i = 0; i < videodata->numwindows; ++i) {
if (videodata->windowlist[i] != NULL) {
data = videodata->windowlist[i];
X11_XGetWindowAttributes(display, data->xwindow, &attrib);
screennum = X11_XScreenNumberOfScreen(attrib.screen);
if (screennum == 0 && SDL_strcmp(name_of_atom, "_ICC_PROFILE") == 0) {
SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_ICCPROF_CHANGED, 0, 0);
} else if (SDL_strncmp(name_of_atom, "_ICC_PROFILE_", sizeof("_ICC_PROFILE_") - 1) == 0 && SDL_strlen(name_of_atom) > sizeof("_ICC_PROFILE_") - 1) {
int iccscreennum = SDL_atoi(&name_of_atom[sizeof("_ICC_PROFILE_") - 1]);
if (screennum == iccscreennum) {
SDL_SendWindowEvent(data->window, SDL_WINDOWEVENT_ICCPROF_CHANGED, 0, 0);
}
}
}
}
}
if (name_of_atom) {
X11_XFree(name_of_atom);
}
}
return;
}
switch (xevent->type) {
/* Gaining mouse coverage? */
case EnterNotify:
{
SDL_Mouse *mouse = SDL_GetMouse();
#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);
mouse->last_x = xevent->xcrossing.x;
mouse->last_y = xevent->xcrossing.y;
#ifdef SDL_VIDEO_DRIVER_X11_XFIXES
{
/* Only create the barriers if we have input focus */
SDL_WindowData *windowdata = (SDL_WindowData *)data->window->driverdata;
if ((data->pointer_barrier_active == SDL_TRUE) && windowdata->window->flags & SDL_WINDOW_INPUT_FOCUS) {
X11_ConfineCursorWithFlags(_this, windowdata->window, &windowdata->barrier_rect, X11_BARRIER_HANDLED_BY_EVENT);
}
}
#endif
if (!mouse->relative_mode) {
SDL_SendMouseMotion(data->window, 0, 0, xevent->xcrossing.x, xevent->xcrossing.y);
}
/* We ungrab in LeaveNotify, so we may need to grab again here */
SDL_UpdateWindowGrab(data->window);
} break;