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xserver-multidpi/hw/kdrive/ephyr/hostx.c
Owen W. Taylor a058192d97 Xephyr: Fix crash with control-shift and GLX (#18185) 
When we are looking up the screen for an event, we need to take
into account the fact that the event may have been delivered to the
"peer window" that we create when implementing GLX. Since we only
ever create one such window per screen, just add a single peer_win
field to EphyrHostScreen.
2008-12-16 11:50:46 -05:00

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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 <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;
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);
#define BUF_LEN 256
char buf[BUF_LEN+1];
if (!host_screen)
return;
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;
}
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;
EPHYR_DBG("mark");
if ((HostX.dpy = XOpenDisplay(getenv("DISPLAY"))) == NULL)
{
fprintf(stderr, "\nXephyr cannot open host display. Is DISPLAY set?\n");
exit(1);
}
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
{
if (host_screen->ximg->data)
{
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 */
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;
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;
}
if (host_visuals) {
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 ;
if (rects) {
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 ;
if (rects) {
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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