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xserver/hw/kdrive/ephyr/hostx.c

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/*
* Xephyr - A kdrive X server thats runs in a host X window.
* Authored by Matthew Allum <mallum@o-hand.com>
*
* Copyright © 2004 Nokia
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Nokia not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Nokia makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* NOKIA DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL NOKIA BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include <kdrive-config.h>
#endif
/*
* including some server headers (like kdrive-config.h)
* might define the macro _XSERVER64
* on 64 bits machines. That macro must _NOT_ be defined for Xlib
* client code, otherwise bad things happen.
* So let's undef that macro if necessary.
*/
#ifdef _XSERVER64
#undef _XSERVER64
#endif
#include "hostx.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h> /* for memset */
#include <errno.h>
#include <time.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/time.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include <X11/keysym.h>
#include <X11/extensions/XShm.h>
#include <X11/extensions/shape.h>
#ifdef XF86DRI
#include <GL/glx.h>
#endif /* XF86DRI */
#include "ephyrlog.h"
#ifdef XF86DRI
extern Bool XF86DRIQueryExtension(Display * dpy,
int *event_basep, int *error_basep);
#endif
/*
* All xlib calls go here, which gets built as its own .a .
* Mixing kdrive and xlib headers causes all sorts of types
* to get clobbered.
*/
struct EphyrHostScreen {
Window win;
Window win_pre_existing; /* Set via -parent option like xnest */
Window peer_win; /* Used for GL; should be at most one */
XImage *ximg;
int win_width, win_height;
int server_depth;
unsigned char *fb_data; /* only used when host bpp != server bpp */
XShmSegmentInfo shminfo;
void *info; /* Pointer to the screen this is associated with */
int mynum; /* Screen number */
};
struct EphyrHostXVars {
char *server_dpy_name;
Display *dpy;
int screen;
Visual *visual;
Window winroot;
GC gc;
int depth;
Bool use_host_cursor;
Bool use_fullscreen;
Bool have_shm;
int n_screens;
struct EphyrHostScreen *screens;
long damage_debug_msec;
unsigned long cmap[256];
};
/* memset ( missing> ) instead of below */
/*static EphyrHostXVars HostX = { "?", 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};*/
static EphyrHostXVars HostX;
static int HostXWantDamageDebug = 0;
extern EphyrKeySyms ephyrKeySyms;
extern int monitorResolution;
char *ephyrResName = NULL;
int ephyrResNameFromCmd = 0;
char *ephyrTitle = NULL;
static void
hostx_set_fullscreen_hint(void);
/* X Error traps */
static int trapped_error_code = 0;
static int (*old_error_handler) (Display * d, XErrorEvent * e);
#define host_depth_matches_server(_vars) (HostX.depth == (_vars)->server_depth)
static struct EphyrHostScreen *
host_screen_from_screen_info(EphyrScreenInfo * screen)
{
int i;
for (i = 0; i < HostX.n_screens; i++) {
if (HostX.screens[i].info == screen) {
return &HostX.screens[i];
}
}
return NULL;
}
static int
error_handler(Display * display, XErrorEvent * error)
{
trapped_error_code = error->error_code;
return 0;
}
static void
hostx_errors_trap(void)
{
trapped_error_code = 0;
old_error_handler = XSetErrorHandler(error_handler);
}
static int
hostx_errors_untrap(void)
{
XSetErrorHandler(old_error_handler);
return trapped_error_code;
}
int
hostx_want_screen_size(EphyrScreenInfo screen, int *width, int *height)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (host_screen &&
(host_screen->win_pre_existing != None ||
HostX.use_fullscreen == True)) {
*width = host_screen->win_width;
*height = host_screen->win_height;
return 1;
}
return 0;
}
void
hostx_add_screen(EphyrScreenInfo screen, unsigned long win_id, int screen_num)
{
int index = HostX.n_screens;
HostX.n_screens += 1;
HostX.screens = realloc(HostX.screens,
HostX.n_screens * sizeof(struct EphyrHostScreen));
memset(&HostX.screens[index], 0, sizeof(struct EphyrHostScreen));
HostX.screens[index].info = screen;
HostX.screens[index].win_pre_existing = win_id;
}
void
hostx_set_display_name(char *name)
{
HostX.server_dpy_name = strdup(name);
}
void
hostx_set_screen_number(EphyrScreenInfo screen, int number)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (host_screen) {
host_screen->mynum = number;
hostx_set_win_title(host_screen->info, "");
}
}
void
hostx_set_win_title(EphyrScreenInfo screen, char *extra_text)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (!host_screen)
return;
if (ephyrTitle) {
XStoreName(HostX.dpy, host_screen->win, ephyrTitle);
}
else {
#define BUF_LEN 256
char buf[BUF_LEN + 1];
memset(buf, 0, BUF_LEN + 1);
snprintf(buf, BUF_LEN, "Xephyr on %s.%d %s",
HostX.server_dpy_name,
host_screen->mynum, (extra_text != NULL) ? extra_text : "");
XStoreName(HostX.dpy, host_screen->win, buf);
}
}
int
hostx_want_host_cursor(void)
{
return HostX.use_host_cursor;
}
void
hostx_use_host_cursor(void)
{
HostX.use_host_cursor = True;
}
int
hostx_want_preexisting_window(EphyrScreenInfo screen)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (host_screen && host_screen->win_pre_existing) {
return 1;
}
else {
return 0;
}
}
void
hostx_use_fullscreen(void)
{
HostX.use_fullscreen = True;
}
int
hostx_want_fullscreen(void)
{
return HostX.use_fullscreen;
}
static void
hostx_set_fullscreen_hint(void)
{
Atom atom_WINDOW_STATE, atom_WINDOW_STATE_FULLSCREEN;
int index;
atom_WINDOW_STATE = XInternAtom(HostX.dpy, "_NET_WM_STATE", False);
atom_WINDOW_STATE_FULLSCREEN
= XInternAtom(HostX.dpy, "_NET_WM_STATE_FULLSCREEN", False);
for (index = 0; index < HostX.n_screens; index++) {
XChangeProperty(HostX.dpy, HostX.screens[index].win,
atom_WINDOW_STATE, XA_ATOM, 32,
PropModeReplace,
(unsigned char *) &atom_WINDOW_STATE_FULLSCREEN, 1);
}
}
static void
hostx_toggle_damage_debug(void)
{
HostXWantDamageDebug ^= 1;
}
void
hostx_handle_signal(int signum)
{
hostx_toggle_damage_debug();
EPHYR_DBG("Signal caught. Damage Debug:%i\n", HostXWantDamageDebug);
}
void
hostx_use_resname(char *name, int fromcmd)
{
ephyrResName = name;
ephyrResNameFromCmd = fromcmd;
}
void
hostx_set_title(char *title)
{
ephyrTitle = title;
}
#ifdef __SUNPRO_C
/* prevent "Function has no return statement" error for x_io_error_handler */
#pragma does_not_return(exit)
#endif
static int _X_NORETURN
x_io_error_handler(Display * dpy)
{
ErrorF("Lost connection to X server: %s\n", strerror(errno));
CloseWellKnownConnections();
OsCleanup(1);
exit(1);
}
int
hostx_init(void)
{
XSetWindowAttributes attr;
Cursor empty_cursor;
Pixmap cursor_pxm;
XColor col;
int index;
char *tmpstr;
XClassHint *class_hint;
attr.event_mask =
ButtonPressMask
| ButtonReleaseMask
| PointerMotionMask
| KeyPressMask
| KeyReleaseMask
| ExposureMask
| StructureNotifyMask;
EPHYR_DBG("mark");
if ((HostX.dpy = XOpenDisplay(getenv("DISPLAY"))) == NULL) {
fprintf(stderr, "\nXephyr cannot open host display. Is DISPLAY set?\n");
exit(1);
}
XSetIOErrorHandler(x_io_error_handler);
HostX.screen = DefaultScreen(HostX.dpy);
HostX.winroot = RootWindow(HostX.dpy, HostX.screen);
HostX.gc = XCreateGC(HostX.dpy, HostX.winroot, 0, NULL);
HostX.depth = DefaultDepth(HostX.dpy, HostX.screen);
HostX.visual = DefaultVisual(HostX.dpy, HostX.screen);
class_hint = XAllocClassHint();
for (index = 0; index < HostX.n_screens; index++) {
struct EphyrHostScreen *host_screen = &HostX.screens[index];
host_screen->server_depth = HostX.depth;
if (host_screen->win_pre_existing != None) {
Status result;
XWindowAttributes prewin_attr;
/* Get screen size from existing window */
hostx_errors_trap();
result = XGetWindowAttributes(HostX.dpy,
host_screen->win_pre_existing,
&prewin_attr);
if (hostx_errors_untrap() || !result) {
fprintf(stderr, "\nXephyr -parent window' does not exist!\n");
exit(1);
}
host_screen->win_width = prewin_attr.width;
host_screen->win_height = prewin_attr.height;
host_screen->win = XCreateWindow(HostX.dpy,
host_screen->win_pre_existing,
0, 0,
host_screen->win_width,
host_screen->win_height,
0,
CopyFromParent,
CopyFromParent,
CopyFromParent,
CWEventMask, &attr);
}
else {
host_screen->win = XCreateWindow(HostX.dpy, HostX.winroot, 0, 0, 100, 100, /* will resize */
0,
CopyFromParent,
CopyFromParent,
CopyFromParent,
CWEventMask, &attr);
hostx_set_win_title(host_screen->info,
"(ctrl+shift grabs mouse and keyboard)");
if (HostX.use_fullscreen) {
host_screen->win_width = DisplayWidth(HostX.dpy, HostX.screen);
host_screen->win_height =
DisplayHeight(HostX.dpy, HostX.screen);
hostx_set_fullscreen_hint();
}
if (class_hint) {
tmpstr = getenv("RESOURCE_NAME");
if (tmpstr && (!ephyrResNameFromCmd))
ephyrResName = tmpstr;
class_hint->res_name = ephyrResName;
class_hint->res_class = "Xephyr";
XSetClassHint(hostx_get_display(), host_screen->win,
class_hint);
}
}
}
if (class_hint)
XFree(class_hint);
XParseColor(HostX.dpy, DefaultColormap(HostX.dpy, HostX.screen),
"red", &col);
XAllocColor(HostX.dpy, DefaultColormap(HostX.dpy, HostX.screen), &col);
XSetForeground(HostX.dpy, HostX.gc, col.pixel);
if (!hostx_want_host_cursor()) {
/* Ditch the cursor, we provide our 'own' */
cursor_pxm = XCreatePixmap(HostX.dpy, HostX.winroot, 1, 1, 1);
memset(&col, 0, sizeof(col));
empty_cursor = XCreatePixmapCursor(HostX.dpy,
cursor_pxm, cursor_pxm,
&col, &col, 1, 1);
for (index = 0; index < HostX.n_screens; index++) {
XDefineCursor(HostX.dpy, HostX.screens[index].win, empty_cursor);
}
XFreePixmap(HostX.dpy, cursor_pxm);
}
for (index = 0; index < HostX.n_screens; index++) {
HostX.screens[index].ximg = NULL;
}
/* Try to get share memory ximages for a little bit more speed */
if (!XShmQueryExtension(HostX.dpy) || getenv("XEPHYR_NO_SHM")) {
fprintf(stderr, "\nXephyr unable to use SHM XImages\n");
HostX.have_shm = False;
}
else {
/* Really really check we have shm - better way ? */
XShmSegmentInfo shminfo;
HostX.have_shm = True;
shminfo.shmid = shmget(IPC_PRIVATE, 1, IPC_CREAT | 0777);
shminfo.shmaddr = shmat(shminfo.shmid, 0, 0);
shminfo.readOnly = True;
hostx_errors_trap();
XShmAttach(HostX.dpy, &shminfo);
XSync(HostX.dpy, False);
if (hostx_errors_untrap()) {
fprintf(stderr, "\nXephyr unable to use SHM XImages\n");
HostX.have_shm = False;
}
shmdt(shminfo.shmaddr);
shmctl(shminfo.shmid, IPC_RMID, 0);
}
XFlush(HostX.dpy);
/* Setup the pause time between paints when debugging updates */
HostX.damage_debug_msec = 20000; /* 1/50 th of a second */
if (getenv("XEPHYR_PAUSE")) {
HostX.damage_debug_msec = strtol(getenv("XEPHYR_PAUSE"), NULL, 0);
EPHYR_DBG("pause is %li\n", HostX.damage_debug_msec);
}
return 1;
}
int
hostx_get_depth(void)
{
return HostX.depth;
}
int
hostx_get_server_depth(EphyrScreenInfo screen)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
return host_screen ? host_screen->server_depth : 0;
}
void
hostx_set_server_depth(EphyrScreenInfo screen, int depth)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (host_screen)
host_screen->server_depth = depth;
}
int
hostx_get_bpp(EphyrScreenInfo screen)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (!host_screen)
return 0;
if (host_depth_matches_server(host_screen))
return HostX.visual->bits_per_rgb;
else
return host_screen->server_depth; /*XXX correct ? */
}
void
hostx_get_visual_masks(EphyrScreenInfo screen,
CARD32 *rmsk, CARD32 *gmsk, CARD32 *bmsk)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (!host_screen)
return;
if (host_depth_matches_server(host_screen)) {
*rmsk = HostX.visual->red_mask;
*gmsk = HostX.visual->green_mask;
*bmsk = HostX.visual->blue_mask;
}
else if (host_screen->server_depth == 16) {
/* Assume 16bpp 565 */
*rmsk = 0xf800;
*gmsk = 0x07e0;
*bmsk = 0x001f;
}
else {
*rmsk = 0x0;
*gmsk = 0x0;
*bmsk = 0x0;
}
}
static int
hostx_calculate_color_shift(unsigned long mask)
{
int shift = 1;
/* count # of bits in mask */
while ((mask = (mask >> 1)))
shift++;
/* cmap entry is an unsigned char so adjust it by size of that */
shift = shift - sizeof(unsigned char) * 8;
if (shift < 0)
shift = 0;
return shift;
}
void
hostx_set_cmap_entry(unsigned char idx,
unsigned char r, unsigned char g, unsigned char b)
{
/* need to calculate the shifts for RGB because server could be BGR. */
/* XXX Not sure if this is correct for 8 on 16, but this works for 8 on 24.*/
static int rshift, bshift, gshift = 0;
static int first_time = 1;
if (first_time) {
first_time = 0;
rshift = hostx_calculate_color_shift(HostX.visual->red_mask);
gshift = hostx_calculate_color_shift(HostX.visual->green_mask);
bshift = hostx_calculate_color_shift(HostX.visual->blue_mask);
}
HostX.cmap[idx] = ((r << rshift) & HostX.visual->red_mask) |
((g << gshift) & HostX.visual->green_mask) |
((b << bshift) & HostX.visual->blue_mask);
}
/**
* hostx_screen_init creates the XImage that will contain the front buffer of
* the ephyr screen, and possibly offscreen memory.
*
* @param width width of the screen
* @param height height of the screen
* @param buffer_height height of the rectangle to be allocated.
*
* hostx_screen_init() creates an XImage, using MIT-SHM if it's available.
* buffer_height can be used to create a larger offscreen buffer, which is used
* by fakexa for storing offscreen pixmap data.
*/
void *
hostx_screen_init(EphyrScreenInfo screen,
int width, int height, int buffer_height)
{
int bitmap_pad;
Bool shm_success = False;
XSizeHints *size_hints;
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
if (!host_screen) {
fprintf(stderr, "%s: Error in accessing hostx data\n", __func__);
exit(1);
}
EPHYR_DBG("host_screen=%p wxh=%dx%d, buffer_height=%d",
host_screen, width, height, buffer_height);
if (host_screen->ximg != NULL) {
/* Free up the image data if previously used
* i.ie called by server reset
*/
if (HostX.have_shm) {
XShmDetach(HostX.dpy, &host_screen->shminfo);
XDestroyImage(host_screen->ximg);
shmdt(host_screen->shminfo.shmaddr);
shmctl(host_screen->shminfo.shmid, IPC_RMID, 0);
}
else {
free(host_screen->ximg->data);
host_screen->ximg->data = NULL;
XDestroyImage(host_screen->ximg);
}
}
if (HostX.have_shm) {
host_screen->ximg =
XShmCreateImage(HostX.dpy, HostX.visual, HostX.depth, ZPixmap, NULL,
&host_screen->shminfo, width, buffer_height);
host_screen->shminfo.shmid =
shmget(IPC_PRIVATE,
host_screen->ximg->bytes_per_line * buffer_height,
IPC_CREAT | 0777);
host_screen->ximg->data = shmat(host_screen->shminfo.shmid, 0, 0);
host_screen->shminfo.shmaddr = host_screen->ximg->data;
if (host_screen->ximg->data == (char *) -1) {
EPHYR_DBG
("Can't attach SHM Segment, falling back to plain XImages");
HostX.have_shm = False;
XDestroyImage(host_screen->ximg);
shmctl(host_screen->shminfo.shmid, IPC_RMID, 0);
}
else {
EPHYR_DBG("SHM segment attached %p", host_screen->shminfo.shmaddr);
host_screen->shminfo.readOnly = False;
XShmAttach(HostX.dpy, &host_screen->shminfo);
shm_success = True;
}
}
if (!shm_success) {
bitmap_pad = (HostX.depth > 16) ? 32 : ((HostX.depth > 8) ? 16 : 8);
EPHYR_DBG("Creating image %dx%d for screen host_screen=%p\n",
width, buffer_height, host_screen);
host_screen->ximg = XCreateImage(HostX.dpy,
HostX.visual,
HostX.depth,
ZPixmap, 0, 0,
width, buffer_height, bitmap_pad, 0);
host_screen->ximg->data =
malloc(host_screen->ximg->bytes_per_line * buffer_height);
}
XResizeWindow(HostX.dpy, host_screen->win, width, height);
/* Ask the WM to keep our size static */
if (host_screen->win_pre_existing == None) {
size_hints = XAllocSizeHints();
size_hints->max_width = size_hints->min_width = width;
size_hints->max_height = size_hints->min_height = height;
size_hints->flags = PMinSize | PMaxSize;
XSetWMNormalHints(HostX.dpy, host_screen->win, size_hints);
XFree(size_hints);
}
XMapWindow(HostX.dpy, host_screen->win);
XSync(HostX.dpy, False);
host_screen->win_width = width;
host_screen->win_height = height;
if (host_depth_matches_server(host_screen)) {
EPHYR_DBG("Host matches server");
return host_screen->ximg->data;
}
else {
EPHYR_DBG("server bpp %i", host_screen->server_depth >> 3);
host_screen->fb_data =
malloc(width * buffer_height * (host_screen->server_depth >> 3));
return host_screen->fb_data;
}
}
static void hostx_paint_debug_rect(struct EphyrHostScreen *host_screen,
int x, int y, int width, int height);
void
hostx_paint_rect(EphyrScreenInfo screen,
int sx, int sy, int dx, int dy, int width, int height)
{
struct EphyrHostScreen *host_screen = host_screen_from_screen_info(screen);
EPHYR_DBG("painting in screen %d\n", host_screen->mynum);
/*
* Copy the image data updated by the shadow layer
* on to the window
*/
if (HostXWantDamageDebug) {
hostx_paint_debug_rect(host_screen, dx, dy, width, height);
}
/*
* If the depth of the ephyr server is less than that of the host,
* the kdrive fb does not point to the ximage data but to a buffer
* ( fb_data ), we shift the various bits from this onto the XImage
* so they match the host.
*
* Note, This code is pretty new ( and simple ) so may break on
* endian issues, 32 bpp host etc.
* Not sure if 8bpp case is right either.
* ... and it will be slower than the matching depth case.
*/
if (!host_depth_matches_server(host_screen)) {
int x, y, idx, bytes_per_pixel = (host_screen->server_depth >> 3);
unsigned char r, g, b;
unsigned long host_pixel;
EPHYR_DBG("Unmatched host depth host_screen=%p\n", host_screen);
for (y = sy; y < sy + height; y++)
for (x = sx; x < sx + width; x++) {
idx =
(host_screen->win_width * y * bytes_per_pixel) +
(x * bytes_per_pixel);
switch (host_screen->server_depth) {
case 16:
{
unsigned short pixel =
*(unsigned short *) (host_screen->fb_data + idx);
r = ((pixel & 0xf800) >> 8);
g = ((pixel & 0x07e0) >> 3);
b = ((pixel & 0x001f) << 3);
host_pixel = (r << 16) | (g << 8) | (b);
XPutPixel(host_screen->ximg, x, y, host_pixel);
break;
}
case 8:
{
unsigned char pixel =
*(unsigned char *) (host_screen->fb_data + idx);
XPutPixel(host_screen->ximg, x, y, HostX.cmap[pixel]);
break;
}
default:
break;
}
}
}
if (HostX.have_shm) {
XShmPutImage(HostX.dpy, host_screen->win,
HostX.gc, host_screen->ximg,
sx, sy, dx, dy, width, height, False);
}
else {
XPutImage(HostX.dpy, host_screen->win, HostX.gc, host_screen->ximg,
sx, sy, dx, dy, width, height);
}
XSync(HostX.dpy, False);
}
static void
hostx_paint_debug_rect(struct EphyrHostScreen *host_screen,
int x, int y, int width, int height)
{
struct timespec tspec;
tspec.tv_sec = HostX.damage_debug_msec / (1000000);
tspec.tv_nsec = (HostX.damage_debug_msec % 1000000) * 1000;
EPHYR_DBG("msec: %li tv_sec %li, tv_msec %li",
HostX.damage_debug_msec, tspec.tv_sec, tspec.tv_nsec);
/* fprintf(stderr, "Xephyr updating: %i+%i %ix%i\n", x, y, width, height); */
XFillRectangle(HostX.dpy, host_screen->win, HostX.gc, x, y, width, height);
XSync(HostX.dpy, False);
/* nanosleep seems to work better than usleep for me... */
nanosleep(&tspec, NULL);
}
void
hostx_load_keymap(void)
{
XID *keymap;
int host_width, min_keycode, max_keycode, width;
int i, j;
XDisplayKeycodes(HostX.dpy, &min_keycode, &max_keycode);
EPHYR_DBG("min: %d, max: %d", min_keycode, max_keycode);
keymap = XGetKeyboardMapping(HostX.dpy,
min_keycode,
max_keycode - min_keycode + 1, &host_width);
/* Try and copy the hosts keymap into our keymap to avoid loads
* of messing around.
*
* kdrive cannot can have more than 4 keysyms per keycode
* so we only copy at most the first 4 ( xorg has 6 per keycode, XVNC 2 )
*/
width = (host_width > 4) ? 4 : host_width;
ephyrKeySyms.map = (CARD32 *) calloc(sizeof(CARD32),
(max_keycode - min_keycode + 1) *
width);
if (!ephyrKeySyms.map)
return;
for (i = 0; i < (max_keycode - min_keycode + 1); i++)
for (j = 0; j < width; j++)
ephyrKeySyms.map[(i * width) + j] =
(CARD32) keymap[(i * host_width) + j];
EPHYR_DBG("keymap width, host:%d kdrive:%d", host_width, width);
ephyrKeySyms.minKeyCode = min_keycode;
ephyrKeySyms.maxKeyCode = max_keycode;
ephyrKeySyms.mapWidth = width;
XFree(keymap);
}
static struct EphyrHostScreen *
host_screen_from_window(Window w)
{
int index = 0;
struct EphyrHostScreen *result = NULL;
for (index = 0; index < HostX.n_screens; index++) {
if (HostX.screens[index].win == w || HostX.screens[index].peer_win == w) {
result = &HostX.screens[index];
goto out;
}
}
out:
return result;
}
int
hostx_get_event(EphyrHostXEvent * ev)
{
XEvent xev;
static int grabbed_screen = -1;
if (XPending(HostX.dpy)) {
XNextEvent(HostX.dpy, &xev);
switch (xev.type) {
case Expose:
/* Not so great event compression, but works ok */
while (XCheckTypedWindowEvent(HostX.dpy, xev.xexpose.window,
Expose, &xev));
{
struct EphyrHostScreen *host_screen =
host_screen_from_window(xev.xexpose.window);
if (host_screen) {
hostx_paint_rect(host_screen->info, 0, 0, 0, 0,
host_screen->win_width,
host_screen->win_height);
}
else {
EPHYR_LOG_ERROR("failed to get host screen\n");
ev->type = EPHYR_EV_EXPOSE;
ev->data.expose.window = xev.xexpose.window;
return 1;
}
}
return 0;
case MotionNotify:
{
struct EphyrHostScreen *host_screen =
host_screen_from_window(xev.xmotion.window);
ev->type = EPHYR_EV_MOUSE_MOTION;
ev->data.mouse_motion.x = xev.xmotion.x;
ev->data.mouse_motion.y = xev.xmotion.y;
ev->data.mouse_motion.window = xev.xmotion.window;
ev->data.mouse_motion.screen =
(host_screen ? host_screen->mynum : -1);
}
return 1;
case ButtonPress:
ev->type = EPHYR_EV_MOUSE_PRESS;
ev->key_state = xev.xkey.state;
/*
* This is a bit hacky. will break for button 5 ( defined as 0x10 )
* Check KD_BUTTON defines in kdrive.h
*/
ev->data.mouse_down.button_num = 1 << (xev.xbutton.button - 1);
return 1;
case ButtonRelease:
ev->type = EPHYR_EV_MOUSE_RELEASE;
ev->key_state = xev.xkey.state;
ev->data.mouse_up.button_num = 1 << (xev.xbutton.button - 1);
return 1;
case KeyPress:
{
ev->type = EPHYR_EV_KEY_PRESS;
ev->key_state = xev.xkey.state;
ev->data.key_down.scancode = xev.xkey.keycode;
return 1;
}
case KeyRelease:
if ((XKeycodeToKeysym(HostX.dpy, xev.xkey.keycode, 0) == XK_Shift_L
|| XKeycodeToKeysym(HostX.dpy, xev.xkey.keycode,
0) == XK_Shift_R)
&& (xev.xkey.state & ControlMask)) {
struct EphyrHostScreen *host_screen =
host_screen_from_window(xev.xexpose.window);
if (grabbed_screen != -1) {
XUngrabKeyboard(HostX.dpy, CurrentTime);
XUngrabPointer(HostX.dpy, CurrentTime);
grabbed_screen = -1;
hostx_set_win_title(host_screen->info,
"(ctrl+shift grabs mouse and keyboard)");
}
else {
/* Attempt grab */
if (XGrabKeyboard(HostX.dpy, host_screen->win, True,
GrabModeAsync,
GrabModeAsync, CurrentTime) == 0) {
if (XGrabPointer(HostX.dpy, host_screen->win, True,
NoEventMask,
GrabModeAsync,
GrabModeAsync,
host_screen->win, None,
CurrentTime) == 0) {
grabbed_screen = host_screen->mynum;
hostx_set_win_title
(host_screen->info,
"(ctrl+shift releases mouse and keyboard)");
}
else /* Failed pointer grabm ungrab keyboard */
XUngrabKeyboard(HostX.dpy, CurrentTime);
}
}
}
/* Still send the release event even if above has happened
* server will get confused with just an up event.
* Maybe it would be better to just block shift+ctrls getting to
* kdrive all togeather.
*/
ev->type = EPHYR_EV_KEY_RELEASE;
ev->key_state = xev.xkey.state;
ev->data.key_up.scancode = xev.xkey.keycode;
return 1;
case ConfigureNotify:
{
struct EphyrHostScreen *host_screen =
host_screen_from_window(xev.xconfigure.window);
if (host_screen && host_screen->win_pre_existing != None) {
ev->type = EPHYR_EV_CONFIGURE;
ev->data.configure.width = xev.xconfigure.width;
ev->data.configure.height = xev.xconfigure.height;
ev->data.configure.window = xev.xconfigure.window;
ev->data.configure.screen = host_screen->mynum;
return 1;
}
return 0;
}
default:
break;
}
}
return 0;
}
void *
hostx_get_display(void)
{
return HostX.dpy;
}
int
hostx_get_window(int a_screen_number)
{
if (a_screen_number < 0 || a_screen_number >= HostX.n_screens) {
EPHYR_LOG_ERROR("bad screen number:%d\n", a_screen_number);
return 0;
}
return HostX.screens[a_screen_number].win;
}
int
hostx_get_window_attributes(int a_window, EphyrHostWindowAttributes * a_attrs)
{
XWindowAttributes attrs;
memset(&attrs, 0, sizeof(attrs));
if (!XGetWindowAttributes(hostx_get_display(), a_window, &attrs)) {
return FALSE;
}
a_attrs->x = attrs.x;
a_attrs->y = attrs.y;
a_attrs->width = attrs.width;
a_attrs->height = attrs.height;
if (attrs.visual)
a_attrs->visualid = attrs.visual->visualid;
return TRUE;
}
int
hostx_get_extension_info(const char *a_ext_name,
int *a_major_opcode,
int *a_first_event, int *a_first_error)
{
if (!a_ext_name || !a_major_opcode || !a_first_event || !a_first_error)
return 0;
if (!XQueryExtension(HostX.dpy,
a_ext_name,
a_major_opcode, a_first_event, a_first_error)) {
return 0;
}
return 1;
}
int
hostx_get_visuals_info(EphyrHostVisualInfo ** a_visuals, int *a_num_entries)
{
Display *dpy = hostx_get_display();
Bool is_ok = False;
XVisualInfo templ, *visuals = NULL;
EphyrHostVisualInfo *host_visuals = NULL;
int nb_items = 0, i = 0;
EPHYR_RETURN_VAL_IF_FAIL(a_visuals && a_num_entries && dpy, False);
EPHYR_LOG("enter\n");
memset(&templ, 0, sizeof(templ));
visuals = XGetVisualInfo(dpy, VisualNoMask, &templ, &nb_items);
if (!visuals) {
EPHYR_LOG_ERROR("host does not advertise any visual\n");
goto out;
}
EPHYR_LOG("host advertises %d visuals\n", nb_items);
host_visuals = calloc(nb_items, sizeof(EphyrHostVisualInfo));
for (i = 0; i < nb_items; i++) {
host_visuals[i].visualid = visuals[i].visualid;
host_visuals[i].screen = visuals[i].screen;
host_visuals[i].depth = visuals[i].depth;
host_visuals[i].class = visuals[i].class;
host_visuals[i].red_mask = visuals[i].red_mask;
host_visuals[i].green_mask = visuals[i].green_mask;
host_visuals[i].blue_mask = visuals[i].blue_mask;
host_visuals[i].colormap_size = visuals[i].colormap_size;
host_visuals[i].bits_per_rgb = visuals[i].bits_per_rgb;
}
*a_visuals = host_visuals;
*a_num_entries = nb_items;
host_visuals = NULL;
is_ok = TRUE;
out:
if (visuals) {
XFree(visuals);
visuals = NULL;
}
free(host_visuals);
host_visuals = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_create_window(int a_screen_number,
EphyrBox * a_geometry,
int a_visual_id, int *a_host_peer /*out parameter */ )
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
XVisualInfo *visual_info = NULL, visual_info_templ;
int visual_mask = VisualIDMask;
Window win = None;
int nb_visuals = 0, winmask = 0;
XSetWindowAttributes attrs;
EPHYR_RETURN_VAL_IF_FAIL(dpy && a_geometry, FALSE);
EPHYR_LOG("enter\n");
/*get visual */
memset(&visual_info, 0, sizeof(visual_info));
visual_info_templ.visualid = a_visual_id;
visual_info = XGetVisualInfo(dpy, visual_mask,
&visual_info_templ, &nb_visuals);
if (!visual_info) {
EPHYR_LOG_ERROR("argh, could not find a remote visual with id:%d\n",
a_visual_id);
goto out;
}
memset(&attrs, 0, sizeof(attrs));
attrs.colormap = XCreateColormap(dpy,
RootWindow(dpy,
visual_info->screen),
visual_info->visual, AllocNone);
attrs.event_mask = ButtonPressMask
| ButtonReleaseMask
| PointerMotionMask | KeyPressMask | KeyReleaseMask | ExposureMask;
winmask = CWColormap | CWEventMask;
win = XCreateWindow(dpy, hostx_get_window(a_screen_number),
a_geometry->x, a_geometry->y,
a_geometry->width, a_geometry->height, 0,
visual_info->depth, CopyFromParent,
visual_info->visual, winmask, &attrs);
if (win == None) {
EPHYR_LOG_ERROR("failed to create peer window\n");
goto out;
}
if (HostX.screens[a_screen_number].peer_win == None) {
HostX.screens[a_screen_number].peer_win = win;
}
else {
EPHYR_LOG_ERROR("multiple peer windows created for same screen\n");
}
XFlush(dpy);
XMapWindow(dpy, win);
*a_host_peer = win;
is_ok = TRUE;
out:
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_destroy_window(int a_win)
{
Display *dpy = hostx_get_display();
EPHYR_RETURN_VAL_IF_FAIL(dpy, FALSE);
XDestroyWindow(dpy, a_win);
XFlush(dpy);
return TRUE;
}
int
hostx_set_window_geometry(int a_win, EphyrBox * a_geo)
{
Display *dpy = hostx_get_display();
EPHYR_RETURN_VAL_IF_FAIL(dpy && a_geo, FALSE);
EPHYR_LOG("enter. x,y,w,h:(%d,%d,%d,%d)\n",
a_geo->x, a_geo->y, a_geo->width, a_geo->height);
XMoveWindow(dpy, a_win, a_geo->x, a_geo->y);
XResizeWindow(dpy, a_win, a_geo->width, a_geo->height);
EPHYR_LOG("leave\n");
return TRUE;
}
int
hostx_set_window_bounding_rectangles(int a_window,
EphyrRect * a_rects, int a_num_rects)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int i = 0;
XRectangle *rects = NULL;
EPHYR_RETURN_VAL_IF_FAIL(dpy && a_rects, FALSE);
EPHYR_LOG("enter. num rects:%d\n", a_num_rects);
rects = calloc(a_num_rects, sizeof(XRectangle));
for (i = 0; i < a_num_rects; i++) {
rects[i].x = a_rects[i].x1;
rects[i].y = a_rects[i].y1;
rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1);
rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1);
EPHYR_LOG("borders clipped to rect[x:%d,y:%d,w:%d,h:%d]\n",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
/*this aways returns 1 */
XShapeCombineRectangles(dpy, a_window, ShapeBounding, 0, 0,
rects, a_num_rects, ShapeSet, YXBanded);
is_ok = TRUE;
free(rects);
rects = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_set_window_clipping_rectangles(int a_window,
EphyrRect * a_rects, int a_num_rects)
{
Bool is_ok = FALSE;
Display *dpy = hostx_get_display();
int i = 0;
XRectangle *rects = NULL;
EPHYR_RETURN_VAL_IF_FAIL(dpy && a_rects, FALSE);
EPHYR_LOG("enter. num rects:%d\n", a_num_rects);
rects = calloc(a_num_rects, sizeof(XRectangle));
for (i = 0; i < a_num_rects; i++) {
rects[i].x = a_rects[i].x1;
rects[i].y = a_rects[i].y1;
rects[i].width = abs(a_rects[i].x2 - a_rects[i].x1);
rects[i].height = abs(a_rects[i].y2 - a_rects[i].y1);
EPHYR_LOG("clipped to rect[x:%d,y:%d,w:%d,h:%d]\n",
rects[i].x, rects[i].y, rects[i].width, rects[i].height);
}
/*this aways returns 1 */
XShapeCombineRectangles(dpy, a_window, ShapeClip, 0, 0,
rects, a_num_rects, ShapeSet, YXBanded);
is_ok = TRUE;
free(rects);
rects = NULL;
EPHYR_LOG("leave\n");
return is_ok;
}
int
hostx_has_xshape(void)
{
int event_base = 0, error_base = 0;
Display *dpy = hostx_get_display();
if (!XShapeQueryExtension(dpy, &event_base, &error_base)) {
return FALSE;
}
return TRUE;
}
#ifdef XF86DRI
typedef struct {
int is_valid;
int local_id;
int remote_id;
} ResourcePair;
#define RESOURCE_PEERS_SIZE 1024*10
static ResourcePair resource_peers[RESOURCE_PEERS_SIZE];
int
hostx_allocate_resource_id_peer(int a_local_resource_id,
int *a_remote_resource_id)
{
int i = 0;
ResourcePair *peer = NULL;
Display *dpy = hostx_get_display();
/*
* first make sure a resource peer
* does not exist already for
* a_local_resource_id
*/
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (resource_peers[i].is_valid
&& resource_peers[i].local_id == a_local_resource_id) {
peer = &resource_peers[i];
break;
}
}
/*
* find one free peer entry, an feed it with
*/
if (!peer) {
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (!resource_peers[i].is_valid) {
peer = &resource_peers[i];
break;
}
}
if (peer) {
peer->remote_id = XAllocID(dpy);
peer->local_id = a_local_resource_id;
peer->is_valid = TRUE;
}
}
if (peer) {
*a_remote_resource_id = peer->remote_id;
return TRUE;
}
return FALSE;
}
int
hostx_get_resource_id_peer(int a_local_resource_id, int *a_remote_resource_id)
{
int i = 0;
ResourcePair *peer = NULL;
for (i = 0; i < RESOURCE_PEERS_SIZE; i++) {
if (resource_peers[i].is_valid
&& resource_peers[i].local_id == a_local_resource_id) {
peer = &resource_peers[i];
break;
}
}
if (peer) {
*a_remote_resource_id = peer->remote_id;
return TRUE;
}
return FALSE;
}
int
hostx_has_dri(void)
{
int event_base = 0, error_base = 0;
Display *dpy = hostx_get_display();
if (!dpy)
return FALSE;
if (!XF86DRIQueryExtension(dpy, &event_base, &error_base)) {
return FALSE;
}
return TRUE;
}
int
hostx_has_glx(void)
{
Display *dpy = hostx_get_display();
int event_base = 0, error_base = 0;
if (!glXQueryExtension(dpy, &event_base, &error_base)) {
return FALSE;
}
return TRUE;
}
#endif /* XF86DRI */
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