void KSnapshot::grabPointerImage(int offsetx, int offsety)
// Uses the X11_EXTENSIONS_XFIXES_H extension to grab the pointer image, and overlays it onto the snapshot.
{
#ifdef HAVE_X11_EXTENSIONS_XFIXES_H
XFixesCursorImage *xcursorimg = XFixesGetCursorImage( QX11Info::display() );
if ( !xcursorimg )
return;
//Annoyingly, xfixes specifies the data to be 32bit, but places it in an unsigned long *
//which can be 64 bit. So we need to iterate over a 64bit structure to put it in a 32bit
//structure.
QVarLengthArray< quint32 > pixels( xcursorimg->width * xcursorimg->height );
for (int i = 0; i < xcursorimg->width * xcursorimg->height; ++i)
pixels[i] = xcursorimg->pixels[i] & 0xffffffff;
QImage qcursorimg((uchar *) pixels.data(), xcursorimg->width, xcursorimg->height,
QImage::Format_ARGB32_Premultiplied);
QPainter painter(&snapshot);
painter.drawImage(QPointF(xcursorimg->x - xcursorimg->xhot - offsetx, xcursorimg->y - xcursorimg ->yhot - offsety), qcursorimg);
XFree(xcursorimg);
#else // HAVE_X11_EXTENSIONS_XFIXES_H
Q_UNUSED(offsetx);
Q_UNUSED(offsety);
return;
#endif // HAVE_X11_EXTENSIONS_XFIXES_H
}
static void
xfixes_cursor_reset_image (ShellXFixesCursor *xfixes_cursor)
{
XFixesCursorImage *cursor_image;
CoglHandle sprite = COGL_INVALID_HANDLE;
if (!xfixes_cursor->have_xfixes)
return;
cursor_image = XFixesGetCursorImage (clutter_x11_get_default_display ());
sprite = cogl_texture_new_from_data (cursor_image->width,
cursor_image->height,
COGL_TEXTURE_NONE,
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
COGL_PIXEL_FORMAT_BGRA_8888_PRE,
#else
COGL_PIXEL_FORMAT_ARGB_8888_PRE,
#endif
COGL_PIXEL_FORMAT_ANY,
cursor_image->width * 4, /* stride */
(const guint8 *) cursor_image->pixels);
if (sprite != COGL_INVALID_HANDLE)
{
if (xfixes_cursor->cursor_sprite != NULL)
cogl_handle_unref (xfixes_cursor->cursor_sprite);
xfixes_cursor->cursor_sprite = sprite;
xfixes_cursor->cursor_hot_x = cursor_image->xhot;
xfixes_cursor->cursor_hot_y = cursor_image->yhot;
g_signal_emit (xfixes_cursor, signals[CURSOR_CHANGED], 0);
}
}
static void
byzanz_layer_cursor_read_cursor (ByzanzLayerCursor *clayer)
{
Display *dpy = GDK_DISPLAY_XDISPLAY (gdk_window_get_display (BYZANZ_LAYER (clayer)->recorder->window));
clayer->cursor_next = XFixesGetCursorImage (dpy);
if (clayer->cursor_next)
g_hash_table_insert (clayer->cursors, clayer->cursor_next, clayer->cursor_next);
}
/**
* Paint a mouse pointer in an X11 image.
*
* @param image image to paint the mouse pointer to
* @param s context used to retrieve original grabbing rectangle
* coordinates
*/
static void paint_mouse_pointer(XImage *image, X11GrabContext *s)
{
int x_off = s->x_off;
int y_off = s->y_off;
int width = s->width;
int height = s->height;
Display *dpy = s->dpy;
XFixesCursorImage *xcim;
int x, y;
int line, column;
int to_line, to_column;
int pixstride = image->bits_per_pixel >> 3;
/* Warning: in its insanity, xlib provides unsigned image data through a
* char* pointer, so we have to make it uint8_t to make things not break.
* Anyone who performs further investigation of the xlib API likely risks
* permanent brain damage. */
uint8_t *pix = image->data;
/* Code doesn't currently support 16-bit or PAL8 */
if (image->bits_per_pixel != 24 && image->bits_per_pixel != 32)
return;
xcim = XFixesGetCursorImage(dpy);
if (!xcim)
return;
x = xcim->x - xcim->xhot;
y = xcim->y - xcim->yhot;
to_line = FFMIN((y + xcim->height), (height + y_off));
to_column = FFMIN((x + xcim->width), (width + x_off));
for (line = FFMAX(y, y_off); line < to_line; line++) {
for (column = FFMAX(x, x_off); column < to_column; column++) {
int xcim_addr = (line - y) * xcim->width + column - x;
int image_addr = ((line - y_off) * width + column - x_off) * pixstride;
int r = (uint8_t)(xcim->pixels[xcim_addr] >> 0);
int g = (uint8_t)(xcim->pixels[xcim_addr] >> 8);
int b = (uint8_t)(xcim->pixels[xcim_addr] >> 16);
int a = (uint8_t)(xcim->pixels[xcim_addr] >> 24);
if (a == 255) {
pix[image_addr + 0] = r;
pix[image_addr + 1] = g;
pix[image_addr + 2] = b;
} else if (a) {
/* pixel values from XFixesGetCursorImage come premultiplied by alpha */
pix[image_addr + 0] = r + (pix[image_addr + 0] * (255 - a) + 255 / 2) / 255;
pix[image_addr + 1] = g + (pix[image_addr + 1] * (255 - a) + 255 / 2) / 255;
pix[image_addr + 2] = b + (pix[image_addr + 2] * (255 - a) + 255 / 2) / 255;
}
}
}
XFree(xcim);
xcim = NULL;
}
void xcursor_tick(xcursor_t *data) {
XFixesCursorImage *xc = XFixesGetCursorImage(data->dpy);
if (!data->tex || data->last_serial != xc->cursor_serial)
xcursor_create(data, xc);
data->pos_x = -1.0 * (xc->x - xc->xhot - data->x_org);
data->pos_y = -1.0 * (xc->y - xc->yhot - data->y_org);
XFree(xc);
}
static void tc_x11source_acquire_cursor_fixes(TCX11Source *handle,
uint8_t *data, int maxdata)
{
XFixesCursorImage *cursor = XFixesGetCursorImage(handle->dpy);
if (cursor == NULL) {
/* this MUST be noisy! */
tc_log_warn(__FILE__, "failed to get cursor image");
} else {
/* FIXME: this has to be rewritten and need significant
* internal refactoring :( */
}
}
void xcursor_tick(xcursor_t *data) {
XFixesCursorImage *xc = XFixesGetCursorImage(data->dpy);
if (!data->tex || data->last_serial != xc->cursor_serial)
xcursor_create(data, xc);
data->x = (int_fast32_t)xc->x - (int_fast32_t)data->x_org;
data->y = (int_fast32_t)xc->y - (int_fast32_t)data->y_org;
data->render_x = xc->x - xc->xhot - data->x_org;
data->render_y = xc->y - xc->yhot - data->y_org;
XFree(xc);
}
int main(int argc, char** argv) {
if (argc != 2 || !argv[1][0] || !argv[1][1]) {
fprintf(stderr, "Usage: %s chrootdisplay\n", argv[0]);
return 2;
}
/* Make sure the displays aren't equal */
char *cros_n = XDisplayName(NULL);
if (cros_n[1] == argv[1][1]) {
fprintf(stderr, "You must specify a different display.\n");
return 2;
}
/* Open the displays */
Display *cros_d, *chroot_d;
Window cros_w, chroot_w;
if (!(cros_d = XOpenDisplay(NULL))) {
fprintf(stderr, "Failed to open Chromium OS display\n");
return 1;
}
if (!(chroot_d = XOpenDisplay(argv[1]))) {
fprintf(stderr, "Failed to open chroot display %s\n", argv[1]);
return 1;
}
/* Get the XFixes extension for the chroot to monitor the cursor */
int xfixes_event, xfixes_error;
if (!XFixesQueryExtension(chroot_d, &xfixes_event, &xfixes_error)) {
fprintf(stderr, "chroot is missing XFixes extension\n");
return 1;
}
XSetErrorHandler(error_handler);
/* Get the root windows */
cros_w = DefaultRootWindow(cros_d);
chroot_w = DefaultRootWindow(chroot_d);
/* Monitor the chroot root window for cursor changes */
XFixesSelectCursorInput(chroot_d, chroot_w, XFixesDisplayCursorNotifyMask);
XEvent e;
while (!error) {
XNextEvent(chroot_d, &e);
if (error) break;
if (e.type != xfixes_event + XFixesCursorNotify) continue;
/* Grab the new cursor and apply it to the Chromium OS X11 server */
XFixesCursorImage *img = XFixesGetCursorImage(chroot_d);
apply_cursor(cros_d, cros_w, img);
XFree(img);
}
/* Clean up */
apply_cursor(cros_d, cros_w, NULL);
XCloseDisplay(cros_d);
XCloseDisplay(chroot_d);
return 0;
}
Utilities::Point GetCursorPos()
{
auto display = XOpenDisplay(NULL);
auto root = DefaultRootWindow(display);
auto img = XFixesGetCursorImage(display);
// Get the mouse cursor position
int x, y, root_x, root_y = 0;
unsigned int mask = 0;
Window child_win, root_win;
XQueryPointer(display, root, &child_win, &root_win, &root_x, &root_y, &x, &y, &mask);
x -= img->xhot;
y -= img->yhot;
XFree(img);
XCloseDisplay(display);
return Utilities::Point(x, y);
}
std::shared_ptr<Utilities::Image> CaptureMouseImage()
{
auto display = XOpenDisplay(NULL);
auto img = XFixesGetCursorImage(display);
if (sizeof(img->pixels[0]) == 8) {
auto pixels = (int *)img->pixels;
for (auto i = 0; i < img->width * img->height; ++i) {
pixels[i] = pixels[i * 2];
}
}
auto i = Utilities::Image::CreateImage(img->height, img->width, (char*)img->pixels, 4);
XFree(img);
XCloseDisplay(display);
return i;
}
void MouseCursor::update()
{
#ifdef Q_OS_LINUX
XFixesCursorImage *img = XFixesGetCursorImage(QX11Info::display());
// realloc enough buffer
size_ = QSize(img->width, img->height);
int pixels = size_.width() * size_.height();
if(pixels > reserved_) {
delete pixmap_data_;
reserved_ = pixels;
pixmap_data_ = new uint32_t[reserved_];
}
/* copy Data removing redundant bits if needed
* Note: sizeof(unsigned long) is 8 bytes in 64bit unix,
* but only bottom 4 bytes are used. (00000000AARRGGBB)
* So we have to remove top 4 bytes.
*/
unsigned long *data = img->pixels;
for(int i = 0; i < pixels; ++i) {
pixmap_data_[i] = data[i];
}
// calc mouse pos
pos_ = QCursor::pos();
pos_ -= QPoint(img->xhot, img->yhot);
free(img);
#else
return;
// TODO: write Platform dependent code for other than X11
// such as MS_Windows and Mac_OSX
#endif
}
void
updateCursor (CompCursor *c,
int x,
int y,
unsigned long serial)
{
/* new current cursor */
if (!c->image || c->image->serial != serial)
{
CompCursorImage *cursorImage;
cursorImage = findCursorImageAtScreen (c->screen, serial);
if (!cursorImage)
{
Display *dpy = c->screen->display->display;
XFixesCursorImage *image;
image = XFixesGetCursorImage (dpy);
if (!image)
return;
cursorImage = malloc (sizeof (CompCursorImage));
if (!cursorImage)
{
XFree (image);
return;
}
x = image->x;
y = image->y;
cursorImage->serial = image->cursor_serial;
cursorImage->xhot = image->xhot;
cursorImage->yhot = image->yhot;
cursorImage->width = image->width;
cursorImage->height = image->height;
initTexture (c->screen, &cursorImage->texture);
if (!imageBufferToTexture (c->screen,
&cursorImage->texture,
(char *) image->pixels,
image->width,
image->height))
{
free (cursorImage);
XFree (image);
return;
}
XFree (image);
cursorImage->next = c->screen->cursorImages;
c->screen->cursorImages = cursorImage;
}
if (c->image)
addCursorDamage (c);
c->image = cursorImage;
c->x = x - c->image->xhot;
c->y = y - c->image->yhot;
setCursorMatrix (c);
addCursorDamage (c);
}
else
{
int newX, newY;
newX = x - c->image->xhot;
newY = y - c->image->yhot;
if (c->x != newX || c->y != newY)
{
addCursorDamage (c);
c->x = newX;
c->y = newY;
setCursorMatrix (c);
addCursorDamage (c);
}
}
}
int x11_shadow_query_cursor(x11ShadowSubsystem* subsystem, BOOL getImage)
{
int x, y, n, k;
rdpShadowServer* server;
rdpShadowSurface* surface;
server = subsystem->server;
surface = server->surface;
if (getImage)
{
#ifdef WITH_XFIXES
UINT32* pDstPixel;
XFixesCursorImage* ci;
XLockDisplay(subsystem->display);
ci = XFixesGetCursorImage(subsystem->display);
XUnlockDisplay(subsystem->display);
if (!ci)
return -1;
x = ci->x;
y = ci->y;
if (ci->width > subsystem->cursorMaxWidth)
return -1;
if (ci->height > subsystem->cursorMaxHeight)
return -1;
subsystem->cursorHotX = ci->xhot;
subsystem->cursorHotY = ci->yhot;
subsystem->cursorWidth = ci->width;
subsystem->cursorHeight = ci->height;
subsystem->cursorId = ci->cursor_serial;
n = ci->width * ci->height;
pDstPixel = (UINT32*) subsystem->cursorPixels;
for (k = 0; k < n; k++)
{
/* XFixesCursorImage.pixels is in *unsigned long*, which may be 8 bytes */
*pDstPixel++ = (UINT32) ci->pixels[k];
}
XFree(ci);
x11_shadow_pointer_alpha_update(subsystem);
#endif
}
else
{
UINT32 mask;
int win_x, win_y;
int root_x, root_y;
Window root, child;
XLockDisplay(subsystem->display);
if (!XQueryPointer(subsystem->display, subsystem->root_window,
&root, &child, &root_x, &root_y, &win_x, &win_y, &mask))
{
XUnlockDisplay(subsystem->display);
return -1;
}
XUnlockDisplay(subsystem->display);
x = root_x;
y = root_y;
}
/* Convert to offset based on current surface */
if (surface)
{
x -= surface->x;
y -= surface->y;
}
if ((x != subsystem->pointerX) || (y != subsystem->pointerY))
{
subsystem->pointerX = x;
subsystem->pointerY = y;
x11_shadow_pointer_position_update(subsystem);
}
return 1;
}
static void
xfixes_cursor_reset_image (ShellXFixesCursor *xfixes_cursor)
{
XFixesCursorImage *cursor_image;
CoglHandle sprite = COGL_INVALID_HANDLE;
guint8 *cursor_data;
gboolean free_cursor_data;
if (!xfixes_cursor->have_xfixes)
return;
cursor_image = XFixesGetCursorImage (clutter_x11_get_default_display ());
if (!cursor_image)
return;
/* Like all X APIs, XFixesGetCursorImage() returns arrays of 32-bit
* quantities as arrays of long; we need to convert on 64 bit */
if (sizeof(long) == 4)
{
cursor_data = (guint8 *)cursor_image->pixels;
free_cursor_data = FALSE;
}
else
{
int i, j;
guint32 *cursor_words;
gulong *p;
guint32 *q;
cursor_words = g_new (guint32, cursor_image->width * cursor_image->height);
cursor_data = (guint8 *)cursor_words;
p = cursor_image->pixels;
q = cursor_words;
for (j = 0; j < cursor_image->height; j++)
for (i = 0; i < cursor_image->width; i++)
*(q++) = *(p++);
free_cursor_data = TRUE;
}
sprite = cogl_texture_new_from_data (cursor_image->width,
cursor_image->height,
COGL_TEXTURE_NONE,
CLUTTER_CAIRO_FORMAT_ARGB32,
COGL_PIXEL_FORMAT_ANY,
cursor_image->width * 4, /* stride */
cursor_data);
if (free_cursor_data)
g_free (cursor_data);
if (sprite != COGL_INVALID_HANDLE)
{
if (xfixes_cursor->cursor_sprite != NULL)
cogl_handle_unref (xfixes_cursor->cursor_sprite);
xfixes_cursor->cursor_sprite = sprite;
xfixes_cursor->cursor_hot_x = cursor_image->xhot;
xfixes_cursor->cursor_hot_y = cursor_image->yhot;
g_signal_emit (xfixes_cursor, signals[CURSOR_CHANGED], 0);
}
XFree (cursor_image);
}
/* Finds NaCl/Chromium shm memory using external handler.
* Reply must be in the form PID:file */
struct cache_entry* find_shm(uint64_t paddr, uint64_t sig, size_t length) {
struct cache_entry* entry = NULL;
/* Find entry in cache */
if (cache[0].paddr == paddr) {
entry = &cache[0];
} else if (cache[1].paddr == paddr) {
entry = &cache[1];
} else {
/* Not found: erase an existing entry. */
entry = &cache[next_entry];
next_entry = (next_entry + 1) % 2;
close_mmap(entry);
}
int try;
for (try = 0; try < 2; try++) {
/* Check signature */
if (entry->map) {
if (*((uint64_t*)entry->map) == sig)
return entry;
log(1, "Invalid signature, fetching new shm!");
close_mmap(entry);
}
/* Setup parameters and run command */
char arg1[32], arg2[32];
int c;
c = snprintf(arg1, sizeof(arg1), "%08lx", (long)paddr & 0xffffffff);
trueorabort(c > 0, "snprintf");
int i, p = 0;
for (i = 0; i < 8; i++) {
c = snprintf(arg2 + p, sizeof(arg2) - p, "%02x",
((uint8_t*)&sig)[i]);
trueorabort(c > 0, "snprintf");
p += c;
}
char* cmd = "croutonfindnacl";
char* args[] = {cmd, arg1, arg2, NULL};
char buffer[256];
log(2, "Running %s %s %s", cmd, arg1, arg2);
c = popen2(cmd, args, NULL, 0, buffer, sizeof(buffer));
if (c <= 0) {
error("Error running helper.");
return NULL;
}
buffer[c < sizeof(buffer) ? c : (sizeof(buffer)-1)] = 0;
log(2, "Result: %s", buffer);
/* Parse PID:file output */
char* cut = strchr(buffer, ':');
if (!cut) {
error("No ':' in helper reply: %s.", cut);
return NULL;
}
*cut = 0;
char* endptr;
long pid = strtol(buffer, &endptr, 10);
if(buffer == endptr || *endptr != '\0') {
error("Invalid pid: %s", buffer);
return NULL;
}
char* file = cut+1;
log(2, "PID:%ld, FILE:%s", pid, file);
entry->paddr = paddr;
entry->fd = open(file, O_RDWR);
if (entry->fd < 0) {
error("Cannot open file %s\n", file);
return NULL;
}
entry->length = length;
entry->map = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED,
entry->fd, 0);
if (!entry->map) {
error("Cannot mmap %s\n", file);
close(entry->fd);
return NULL;
}
log(2, "mmap ok %p %zu %d", entry->map, entry->length, entry->fd);
}
error("Cannot find shm.");
return NULL;
}
/* WebSocket functions */
XImage* img = NULL;
XShmSegmentInfo shminfo;
/* Writes framebuffer image to websocket/shm */
int write_image(const struct screen* screen) {
char reply_raw[FRAMEMAXHEADERSIZE + sizeof(struct screen_reply)];
struct screen_reply* reply =
(struct screen_reply*)(reply_raw + FRAMEMAXHEADERSIZE);
int refresh = 0;
memset(reply_raw, 0, sizeof(reply_raw));
reply->type = 'S';
reply->width = screen->width;
reply->height = screen->height;
/* Allocate XShmImage */
if (!img || img->width != screen->width || img->height != screen->height) {
if (img) {
XDestroyImage(img);
shmdt(shminfo.shmaddr);
shmctl(shminfo.shmid, IPC_RMID, 0);
}
/* FIXME: Some error checking should happen here... */
img = XShmCreateImage(dpy, DefaultVisual(dpy, 0), 24,
ZPixmap, NULL, &shminfo,
screen->width, screen->height);
trueorabort(img, "XShmCreateImage");
shminfo.shmid = shmget(IPC_PRIVATE, img->bytes_per_line*img->height,
IPC_CREAT|0777);
trueorabort(shminfo.shmid != -1, "shmget");
shminfo.shmaddr = img->data = shmat(shminfo.shmid, 0, 0);
trueorabort(shminfo.shmaddr != (void*)-1, "shmat");
shminfo.readOnly = False;
int ret = XShmAttach(dpy, &shminfo);
trueorabort(ret, "XShmAttach");
/* Force refresh */
refresh = 1;
}
if (screen->refresh) {
log(1, "Force refresh from client.");
/* refresh forced by the client */
refresh = 1;
}
XEvent ev;
/* Register damage on new windows */
while (XCheckTypedEvent(dpy, MapNotify, &ev)) {
register_damage(dpy, ev.xcreatewindow.window);
refresh = 1;
}
/* Check for damage */
while (XCheckTypedEvent(dpy, damageEvent + XDamageNotify, &ev)) {
refresh = 1;
}
/* Check for cursor events */
reply->cursor_updated = 0;
while (XCheckTypedEvent(dpy, fixesEvent + XFixesCursorNotify, &ev)) {
XFixesCursorNotifyEvent* curev = (XFixesCursorNotifyEvent*)&ev;
if (verbose >= 2) {
char* name = XGetAtomName(dpy, curev->cursor_name);
log(2, "cursor! %ld %s", curev->cursor_serial, name);
XFree(name);
}
reply->cursor_updated = 1;
reply->cursor_serial = curev->cursor_serial;
}
/* No update */
if (!refresh) {
reply->shm = 0;
reply->updated = 0;
socket_client_write_frame(reply_raw, sizeof(*reply),
WS_OPCODE_BINARY, 1);
return 0;
}
/* Get new image from framebuffer */
XShmGetImage(dpy, DefaultRootWindow(dpy), img, 0, 0, AllPlanes);
int size = img->bytes_per_line * img->height;
trueorabort(size == screen->width*screen->height*4,
"Invalid screen byte count");
trueorabort(screen->shm, "Non-SHM rendering is not supported");
struct cache_entry* entry = find_shm(screen->paddr, screen->sig, size);
reply->shm = 1;
reply->updated = 1;
reply->shmfailed = 0;
if (entry && entry->map) {
if (size == entry->length) {
memcpy(entry->map, img->data, size);
msync(entry->map, size, MS_SYNC);
} else {
/* This should never happen (it means the client passed an
* outdated buffer to us). */
error("Invalid shm entry length (client bug!).");
reply->shmfailed = 1;
}
} else {
/* Keep the flow going, even if we cannot find the shm. Next time
* the NaCl client reallocates the buffer, we are likely to be able
* to find it. */
error("Cannot find shm, moving on...");
reply->shmfailed = 1;
}
/* Confirm write is done */
socket_client_write_frame(reply_raw, sizeof(*reply),
WS_OPCODE_BINARY, 1);
return 0;
}
/* Writes cursor image to websocket */
int write_cursor() {
XFixesCursorImage *img = XFixesGetCursorImage(dpy);
if (!img) {
error("XFixesGetCursorImage returned NULL");
return -1;
}
int size = img->width*img->height;
const int replylength = sizeof(struct cursor_reply) + size*sizeof(uint32_t);
char reply_raw[FRAMEMAXHEADERSIZE + replylength];
struct cursor_reply* reply =
(struct cursor_reply*)(reply_raw + FRAMEMAXHEADERSIZE);
memset(reply_raw, 0, sizeof(*reply_raw));
reply->type = 'P';
reply->width = img->width;
reply->height = img->height;
reply->xhot = img->xhot;
reply->yhot = img->yhot;
reply->cursor_serial = img->cursor_serial;
/* This casts long[] to uint32_t[] */
int i;
for (i = 0; i < size; i++)
reply->pixels[i] = img->pixels[i];
socket_client_write_frame(reply_raw, replylength, WS_OPCODE_BINARY, 1);
XFree(img);
return 0;
}
static void
ensure_xfixes_cursor (MetaCursorTracker *tracker)
{
MetaDisplay *display = meta_get_display ();
XFixesCursorImage *cursor_image;
CoglTexture2D *sprite;
guint8 *cursor_data;
gboolean free_cursor_data;
CoglContext *ctx;
CoglError *error = NULL;
if (tracker->xfixes_cursor)
return;
cursor_image = XFixesGetCursorImage (display->xdisplay);
if (!cursor_image)
return;
/* Like all X APIs, XFixesGetCursorImage() returns arrays of 32-bit
* quantities as arrays of long; we need to convert on 64 bit */
if (sizeof(long) == 4)
{
cursor_data = (guint8 *)cursor_image->pixels;
free_cursor_data = FALSE;
}
else
{
int i, j;
guint32 *cursor_words;
gulong *p;
guint32 *q;
cursor_words = g_new (guint32, cursor_image->width * cursor_image->height);
cursor_data = (guint8 *)cursor_words;
p = cursor_image->pixels;
q = cursor_words;
for (j = 0; j < cursor_image->height; j++)
for (i = 0; i < cursor_image->width; i++)
*(q++) = *(p++);
free_cursor_data = TRUE;
}
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
sprite = cogl_texture_2d_new_from_data (ctx,
cursor_image->width,
cursor_image->height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cursor_image->width * 4, /* stride */
cursor_data,
&error);
if (free_cursor_data)
g_free (cursor_data);
if (error != NULL)
{
meta_warning ("Failed to allocate cursor sprite texture: %s\n", error->message);
cogl_error_free (error);
}
if (sprite != NULL)
{
MetaCursorSprite *cursor_sprite = meta_cursor_sprite_new ();
meta_cursor_sprite_set_texture (cursor_sprite,
sprite,
cursor_image->xhot,
cursor_image->yhot);
cogl_object_unref (sprite);
tracker->xfixes_cursor = cursor_sprite;
}
XFree (cursor_image);
}
static void
ensure_xfixes_cursor (MetaCursorTracker *tracker)
{
XFixesCursorImage *cursor_image;
CoglTexture2D *sprite;
guint8 *cursor_data;
gboolean free_cursor_data;
CoglContext *ctx;
if (tracker->sprite)
return;
cursor_image = XFixesGetCursorImage (tracker->screen->display->xdisplay);
if (!cursor_image)
return;
/* Like all X APIs, XFixesGetCursorImage() returns arrays of 32-bit
* quantities as arrays of long; we need to convert on 64 bit */
if (sizeof(long) == 4)
{
cursor_data = (guint8 *)cursor_image->pixels;
free_cursor_data = FALSE;
}
else
{
int i, j;
guint32 *cursor_words;
gulong *p;
guint32 *q;
cursor_words = g_new (guint32, cursor_image->width * cursor_image->height);
cursor_data = (guint8 *)cursor_words;
p = cursor_image->pixels;
q = cursor_words;
for (j = 0; j < cursor_image->height; j++)
for (i = 0; i < cursor_image->width; i++)
*(q++) = *(p++);
free_cursor_data = TRUE;
}
ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());
sprite = cogl_texture_2d_new_from_data (ctx,
cursor_image->width,
cursor_image->height,
CLUTTER_CAIRO_FORMAT_ARGB32,
cursor_image->width * 4, /* stride */
cursor_data,
NULL);
if (free_cursor_data)
g_free (cursor_data);
if (sprite != NULL)
{
tracker->sprite = sprite;
tracker->hot_x = cursor_image->xhot;
tracker->hot_y = cursor_image->yhot;
}
XFree (cursor_image);
}
int x11_shadow_query_cursor(x11ShadowSubsystem* subsystem, BOOL getImage)
{
int x, y, n, k;
rdpShadowServer* server;
rdpShadowSurface* surface;
server = subsystem->server;
surface = server->surface;
if (getImage)
{
#ifdef WITH_XFIXES
UINT32* pDstPixel;
XFixesCursorImage* ci;
ci = XFixesGetCursorImage(subsystem->display);
x = ci->x;
y = ci->y;
if (ci->width > subsystem->cursorMaxWidth)
return -1;
if (ci->height > subsystem->cursorMaxHeight)
return -1;
subsystem->cursorHotX = ci->xhot;
subsystem->cursorHotY = ci->yhot;
subsystem->cursorWidth = ci->width;
subsystem->cursorHeight = ci->height;
subsystem->cursorId = ci->cursor_serial;
n = ci->width * ci->height;
pDstPixel = (UINT32*) subsystem->cursorPixels;
for (k = 0; k < n; k++)
{
/* XFixesCursorImage.pixels is in *unsigned long*, which may be 8 bytes */
*pDstPixel++ = (UINT32) ci->pixels[k];
}
XFree(ci);
#endif
}
else
{
UINT32 mask;
int win_x, win_y;
int root_x, root_y;
Window root, child;
if (!XQueryPointer(subsystem->display, subsystem->root_window,
&root, &child, &root_x, &root_y, &win_x, &win_y, &mask))
{
return -1;
}
x = root_x;
y = root_y;
}
subsystem->cursorX = x;
subsystem->cursorY = y;
return 1;
}
