static LRESULT CALLBACK
cbt_hook_proc(int code, WPARAM wparam, LPARAM lparam)
{
if (!g_wm_seamless_focus)
goto end;
if (code < 0)
goto end;
switch (code) {
case HCBT_MINMAX:
{
int show, state, blocked;
HWND hwnd, blocked_hwnd;
unsigned int serial;
LONG style;
WaitForSingleObject(g_mutex, INFINITE);
blocked_hwnd = long_to_hwnd(g_shdata->blocked_state_hwnd);
serial = g_shdata->blocked_state_serial;
blocked = g_shdata->blocked_state;
ReleaseMutex(g_mutex);
hwnd = (HWND) wparam;
style = GetWindowLong(hwnd, GWL_STYLE);
if (!(style & WS_VISIBLE))
break;
show = LOWORD(lparam);
if ((show == SW_NORMAL) || (show == SW_SHOWNORMAL)
|| (show == SW_RESTORE))
state = 0;
else if ((show == SW_MINIMIZE) || (show == SW_SHOWMINIMIZED))
state = 1;
else if ((show == SW_MAXIMIZE) || (show == SW_SHOWMAXIMIZED))
state = 2;
else {
debug("Unexpected show: %d", show);
break;
}
if ((blocked_hwnd == hwnd) && (blocked == state))
vchannel_write("ACK", "%u", serial);
else
vchannel_write("STATE", "0x%08lx,0x%08x,0x%08x",
hwnd, state, 0);
break;
}
default:
break;
}
end:
return CallNextHookEx(g_cbt_hook, code, wparam, lparam);
}
static void
update_position(HWND hwnd)
{
RECT rect, blocked;
HWND blocked_hwnd;
unsigned int serial;
WaitForSingleObject(g_mutex, INFINITE);
blocked_hwnd = long_to_hwnd(g_shdata->block_move_hwnd);
serial = g_shdata->block_move_serial;
memcpy(&blocked, &g_shdata->block_move, sizeof(RECT));
ReleaseMutex(g_mutex);
vchannel_block();
if (!GetWindowRect(hwnd, &rect)) {
debug("GetWindowRect failed!");
goto end;
}
if ((hwnd == blocked_hwnd) && (rect.left == blocked.left)
&& (rect.top == blocked.top)
&& (rect.right == blocked.right) && (rect.bottom == blocked.bottom))
goto end;
vchannel_write("POSITION", "0x%08lx,%d,%d,%d,%d,0x%08x",
hwnd,
rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top, 0);
end:
vchannel_unblock();
}
static void
update_zorder(HWND hwnd)
{
HWND behind;
HWND block_hwnd, block_behind;
unsigned int serial;
WaitForSingleObject(g_mutex, INFINITE);
serial = g_shdata->blocked_zchange_serial;
block_hwnd = long_to_hwnd(g_shdata->blocked_zchange[0]);
block_behind = long_to_hwnd(g_shdata->blocked_zchange[1]);
ReleaseMutex(g_mutex);
vchannel_block();
behind = GetNextWindow(hwnd, GW_HWNDPREV);
while (behind) {
LONG style;
style = GetWindowLong(behind, GWL_STYLE);
if ((!(style & WS_CHILD) || (style & WS_POPUP)) && (style & WS_VISIBLE))
break;
behind = GetNextWindow(behind, GW_HWNDPREV);
}
if ((hwnd == block_hwnd) && (behind == block_behind))
vchannel_write("ACK", "%u", serial);
else {
int flags = 0;
LONG exstyle = GetWindowLong(hwnd, GWL_EXSTYLE);
// handle always on top
if (exstyle & WS_EX_TOPMOST)
flags |= SEAMLESS_CREATE_TOPMOST;
vchannel_write("ZCHANGE", "0x%08lx,0x%08lx,0x%08x", hwnd, behind,
flags);
}
vchannel_unblock();
}
static void
process_cmds(void)
{
char line[VCHANNEL_MAX_LINE];
int size;
char *p, *tok1, *tok2, *tok3, *tok4, *tok5, *tok6, *tok7, *tok8;
while ((size = g_vchannel_read_fn(line, sizeof(line))) >= 0) {
p = unescape(line);
tok1 = get_token(&p);
tok2 = get_token(&p);
tok3 = get_token(&p);
tok4 = get_token(&p);
tok5 = get_token(&p);
tok6 = get_token(&p);
tok7 = get_token(&p);
tok8 = get_token(&p);
if (strcmp(tok1, "SYNC") == 0)
do_sync();
else if (strcmp(tok1, "STATE") == 0)
do_state(strtoul(tok2, NULL, 0), long_to_hwnd(strtoul(tok3, NULL,
0)), strtol(tok4, NULL, 0));
else if (strcmp(tok1, "POSITION") == 0)
do_position(strtoul(tok2, NULL, 0), long_to_hwnd(strtoul(tok3, NULL,
0)), strtol(tok4, NULL, 0), strtol(tok5, NULL, 0),
strtol(tok6, NULL, 0), strtol(tok7, NULL, 0));
else if (strcmp(tok1, "ZCHANGE") == 0)
do_zchange(strtoul(tok2, NULL, 0), long_to_hwnd(strtoul(tok3, NULL,
0)), long_to_hwnd(strtoul(tok4, NULL, 0)));
else if (strcmp(tok1, "FOCUS") == 0)
do_focus(strtoul(tok2, NULL, 0), long_to_hwnd(strtoul(tok3, NULL,
0)));
else if (strcmp(tok1, "DESTROY") == 0)
do_destroy(long_to_hwnd(strtoul(tok3, NULL, 0)));
else if (strcmp(tok1, "SPAWN") == 0)
do_spawn(strtoul(tok2, NULL, 0), tok3);
else if (strcmp(tok1, "PERSISTENT") == 0)
do_persistent(strtoul(tok2, NULL, 0), strtol(tok3, NULL, 0));
free(p);
}
}
