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quakeforge/libs/video/targets/in_x11.c
Bill Currie 12c84046f3 [cvar] Make cvars properly typed 
This is an extremely extensive patch as it hits every cvar, and every
usage of the cvars. Cvars no longer store the value they control,
instead, they use a cexpr value object to reference the value and
specify the value's type (currently, a null type is used for strings).
Non-string cvars are passed through cexpr, allowing expressions in the
cvars' settings. Also, cvars have returned to an enhanced version of the
original (id quake) registration scheme.

As a minor benefit, relevant code having direct access to the
cvar-controlled variables is probably a slight optimization as it
removed a pointer dereference, and the variables can be located for data
locality.

The static cvar descriptors are made private as an additional safety
layer, though there's nothing stopping external modification via
Cvar_FindVar (which is needed for adding listeners).

While not used yet (partly due to working out the design), cvars can
have a validation function.

Registering a cvar allows a primary listener (and its data) to be
specified: it will always be called first when the cvar is modified. The
combination of proper listeners and direct access to the controlled
variable greatly simplifies the more complex cvar interactions as much
less null checking is required, and there's no need for one cvar's
callback to call another's.

nq-x11 is known to work at least well enough for the demos. More testing
will come.
2022-04-24 19:15:22 +09:00

1636 lines
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/*
in_x11.c
general x11 input driver
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
Copyright (C) 1999,2000 contributors of the QuakeForge project
Please see the file "AUTHORS" for a list of contributors
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#define _BSD
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/XF86keysym.h>
#include <X11/XKBlib.h>
#include <X11/Sunkeysym.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#ifdef HAVE_DGA
# ifdef DGA_OLD_HEADERS
# include <X11/extensions/xf86dga.h>
# else
# include <X11/extensions/Xxf86dga.h>
# endif
#endif
#ifdef HAVE_XI2
# include <X11/extensions/XInput2.h>
#endif
#ifdef HAVE_XFIXES
# include <X11/extensions/Xfixes.h>
#endif
#include "QF/cdaudio.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/input.h"
#include "QF/joystick.h"
#include "QF/keys.h"
#include "QF/mathlib.h"
#include "QF/qargs.h"
#include "QF/sound.h"
#include "QF/sys.h"
#include "QF/input/event.h"
#include "compat.h"
#include "context_x11.h"
#include "dga_check.h"
#include "in_x11.h"
#include "qfselect.h"
#include "vid_internal.h"
typedef struct x11_device_s {
const char *name;
int num_axes;
int num_buttons;
in_axisinfo_t *axes;
in_buttoninfo_t *buttons;
void *event_data;
int devid;
} x11_device_t;
#define X11_MOUSE_BUTTONS 32
#define X11_MOUSE_AXES 2
// The X11 protocol supports only 256 keys
static in_buttoninfo_t x11_key_buttons[256];
// X11 mice have only two axes (FIXME NOT always true (XInput says otherwise!)
static in_axisinfo_t x11_mouse_axes[X11_MOUSE_AXES];
// FIXME assume up to 32 mouse buttons (see X11_MOUSE_BUTTONS)
static in_buttoninfo_t x11_mouse_buttons[X11_MOUSE_BUTTONS];
static const char *x11_mouse_axis_names[] = {"M_X", "M_Y"};
static const char *x11_mouse_button_names[] = {
"M_BUTTON1", "M_BUTTON2", "M_BUTTON3", "M_WHEEL_UP",
"M_WHEEL_DOWN", "M_BUTTON6", "M_BUTTON7", "M_BUTTON8",
"M_BUTTON9", "M_BUTTON10", "M_BUTTON11", "M_BUTTON12",
"M_BUTTON13", "M_BUTTON14", "M_BUTTON15", "M_BUTTON16",
"M_BUTTON17", "M_BUTTON18", "M_BUTTON19", "M_BUTTON20",
"M_BUTTON21", "M_BUTTON22", "M_BUTTON23", "M_BUTTON24",
"M_BUTTON25", "M_BUTTON26", "M_BUTTON27", "M_BUTTON28",
"M_BUTTON29", "M_BUTTON30", "M_BUTTON31", "M_BUTTON32",
};
#define SIZE(x) (sizeof (x) / sizeof (x[0]))
static x11_device_t x11_keyboard_device = {
"core:keyboard",
0, SIZE (x11_key_buttons),
0, x11_key_buttons,
};
static x11_device_t x11_mouse_device = {
"core:mouse",
SIZE (x11_mouse_axes), SIZE (x11_mouse_buttons),
x11_mouse_axes, x11_mouse_buttons,
};
int in_auto_focus;
static cvar_t in_auto_focus_cvar = {
.name = "in_auto_focus",
.description =
"grab input focus when the mouse enters the window when using xinput2 "
"with certain window managers using focus-follows-mouse (eg, openbox)",
.default_value = "1",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &in_auto_focus },
};
int in_snd_block;
static cvar_t in_snd_block_cvar = {
.name = "in_snd_block",
.description =
"block sound output on window focus loss",
.default_value = "0",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &in_snd_block },
};
char *in_dga;
static cvar_t in_dga_cvar = {
.name = "in_dga",
.description =
"DGA Input support",
.default_value = "0",
.flags = CVAR_ARCHIVE,
.value = { .type = 0/* not used */, .value = &in_dga },
};
int in_mouse_accel;
static cvar_t in_mouse_accel_cvar = {
.name = "in_mouse_accel",
.description =
"set to 0 to remove mouse acceleration",
.default_value = "1",
.flags = CVAR_ARCHIVE,
.value = { .type = &cexpr_int, .value = &in_mouse_accel },
};
static qboolean dga_avail;
static qboolean dga_active;
static IE_mouse_event_t x11_mouse;
static IE_key_event_t x11_key;
static int input_grabbed = 0;
#ifdef HAVE_XI2
static int xi_opcode;
#endif
#ifdef HAVE_XFIXES
static int xf_opcode;
static PointerBarrier x11_left_barrier;
static PointerBarrier x11_right_barrier;
static PointerBarrier x11_top_barrier;
static PointerBarrier x11_bottom_barrier;
#endif
static IE_app_window_event_t x11_aw;
static int x11_have_xi;
static int x11_fd;
static int x11_driver_handle = -1;
static int x11_event_handler_id;
static qboolean x11_have_pointer;
static void
dga_on (void)
{
#ifdef HAVE_DGA
if (dga_avail && !dga_active) {
int ret;
ret = XF86DGADirectVideo (x_disp, DefaultScreen (x_disp),
XF86DGADirectMouse);
Sys_MaskPrintf (SYS_vid, "XF86DGADirectVideo returned %d\n", ret);
if (ret)
dga_active = true;
}
#endif
}
static void
dga_off (void)
{
#ifdef HAVE_DGA
if (dga_avail && dga_active) {
int ret;
ret = XF86DGADirectVideo (x_disp, DefaultScreen (x_disp), 0);
Sys_MaskPrintf (SYS_vid, "XF86DGADirectVideo returned %d\n", ret);
if (ret)
dga_active = false;
}
#endif
}
static void
in_dga_f (void *data, const cvar_t *cvar)
{
if (in_dga && input_grabbed) {
Sys_MaskPrintf (SYS_vid, "VID: in_dga_f on\n");
dga_on ();
} else {
Sys_MaskPrintf (SYS_vid, "VID: in_dga_f off\n");
dga_off ();
}
}
static void
in_mouse_accel_f (void *data, const cvar_t *cvar)
{
if (in_mouse_accel) {
X11_RestoreMouseAcceleration ();
} else {
X11_SaveMouseAcceleration ();
X11_RemoveMouseAcceleration ();
}
}
static void
in_paste_buffer_f (void)
{
Atom property;
if (XGetSelectionOwner (x_disp, XA_PRIMARY) == None)
return;
property = XInternAtom (x_disp, "GETCLIPBOARDDATA_PROP", False);
XConvertSelection (x_disp, XA_PRIMARY, XA_STRING, property, x_win, x_time);
XFlush (x_disp);
}
static void
enter_notify (XEvent *event)
{
x11_have_pointer = true;
x_time = event->xcrossing.time;
x11_mouse.x = event->xmotion.x;
x11_mouse.y = event->xmotion.y;
if (!x_have_focus && in_auto_focus) {
XSetInputFocus (x_disp, x_win, RevertToPointerRoot, CurrentTime);
}
}
static void
leave_notify (XEvent *event)
{
x11_have_pointer = false;
}
static void
XLateKey (XKeyEvent *ev, int *k, int *u)
{
char buffer[4];
int unicode;
int key = 0;
KeySym keysym, shifted_keysym;
XComposeStatus compose;
keysym = XLookupKeysym (ev, 0);
XLookupString (ev, buffer, sizeof(buffer), &shifted_keysym, &compose);
unicode = (byte) buffer[0];
switch (keysym) {
case XK_KP_Page_Up:
key = QFK_KP9;
break;
case XK_Page_Up:
key = QFK_PAGEUP;
break;
case XK_KP_Page_Down:
key = QFK_KP3;
break;
case XK_Page_Down:
key = QFK_PAGEDOWN;
break;
case XK_KP_Home:
key = QFK_KP7;
break;
case XK_Home:
key = QFK_HOME;
break;
case XK_KP_End:
key = QFK_KP1;
break;
case XK_End:
key = QFK_END;
break;
case XK_KP_Left:
key = QFK_KP4;
break;
case XK_Left:
key = QFK_LEFT;
break;
case XK_KP_Right:
key = QFK_KP6;
break;
case XK_Right:
key = QFK_RIGHT;
break;
case XK_KP_Down:
key = QFK_KP2;
break;
case XK_Down:
key = QFK_DOWN;
break;
case XK_KP_Up:
key = QFK_KP8;
break;
case XK_Up:
key = QFK_UP;
break;
case XK_Escape:
key = QFK_ESCAPE;
break;
case XK_KP_Enter:
key = QFK_KP_ENTER;
break;
case XK_Return:
key = QFK_RETURN;
break;
case XK_Tab:
key = QFK_TAB;
break;
case XK_F1:
key = QFK_F1;
break;
case XK_F2:
key = QFK_F2;
break;
case XK_F3:
key = QFK_F3;
break;
case XK_F4:
key = QFK_F4;
break;
case XK_F5:
key = QFK_F5;
break;
case XK_F6:
key = QFK_F6;
break;
case XK_F7:
key = QFK_F7;
break;
case XK_F8:
key = QFK_F8;
break;
case XK_F9:
key = QFK_F9;
break;
case XK_F10:
key = QFK_F10;
break;
case XK_F11:
key = QFK_F11;
break;
case XK_F12:
key = QFK_F12;
break;
case XK_BackSpace:
key = QFK_BACKSPACE;
break;
case XK_KP_Delete:
key = QFK_KP_PERIOD;
break;
case XK_Delete:
key = QFK_DELETE;
break;
case XK_Pause:
key = QFK_PAUSE;
break;
case XK_Shift_L:
key = QFK_LSHIFT;
break;
case XK_Shift_R:
key = QFK_RSHIFT;
break;
case XK_Execute:
case XK_Control_L:
key = QFK_LCTRL;
break;
case XK_Control_R:
key = QFK_RCTRL;
break;
case XK_Mode_switch:
case XK_Alt_L:
key = QFK_LALT;
break;
case XK_Meta_L:
key = QFK_LMETA;
break;
case XK_Alt_R:
key = QFK_RALT;
break;
case XK_Meta_R:
key = QFK_RMETA;
break;
case XK_Super_L:
key = QFK_LSUPER;
break;
case XK_Super_R:
key = QFK_RSUPER;
break;
case XK_Multi_key:
key = QFK_COMPOSE;
break;
case XK_Menu:
key = QFK_MENU;
break;
case XK_Caps_Lock:
key = QFK_CAPSLOCK;
break;
case XK_KP_Begin:
key = QFK_KP5;
break;
case XK_Print:
key = QFK_PRINT;
break;
case XK_Scroll_Lock:
key = QFK_SCROLLOCK;
break;
case XK_Num_Lock:
key = QFK_NUMLOCK;
break;
case XK_Insert:
key = QFK_INSERT;
break;
case XK_KP_Insert:
key = QFK_KP0;
break;
case XK_KP_Multiply:
key = QFK_KP_MULTIPLY;
break;
case XK_KP_Add:
key = QFK_KP_PLUS;
break;
case XK_KP_Subtract:
key = QFK_KP_MINUS;
break;
case XK_KP_Divide:
key = QFK_KP_DIVIDE;
break;
// For Sun keyboards
case XK_F27:
key = QFK_HOME;
break;
case XK_F29:
key = QFK_PAGEUP;
break;
case XK_F33:
key = QFK_END;
break;
case XK_F35:
key = QFK_PAGEDOWN;
break;
// Some high ASCII symbols, for azerty keymaps
case XK_twosuperior:
key = QFK_WORLD_18;
break;
case XK_eacute:
key = QFK_WORLD_63;
break;
case XK_section:
key = QFK_WORLD_7;
break;
case XK_egrave:
key = QFK_WORLD_72;
break;
case XK_ccedilla:
key = QFK_WORLD_71;
break;
case XK_agrave:
key = QFK_WORLD_64;
break;
case XK_Kanji:
key = QFK_KANJI;
break;
case XK_Muhenkan:
key = QFK_MUHENKAN;
break;
case XK_Henkan:
key = QFK_HENKAN;
break;
case XK_Romaji:
key = QFK_ROMAJI;
break;
case XK_Hiragana:
key = QFK_HIRAGANA;
break;
case XK_Katakana:
key = QFK_KATAKANA;
break;
case XK_Hiragana_Katakana:
key = QFK_HIRAGANA_KATAKANA;
break;
case XK_Zenkaku:
key = QFK_ZENKAKU;
break;
case XK_Hankaku:
key = QFK_HANKAKU;
break;
case XK_Zenkaku_Hankaku:
key = QFK_ZENKAKU_HANKAKU;
break;
case XK_Touroku:
key = QFK_TOUROKU;
break;
case XK_Massyo:
key = QFK_MASSYO;
break;
case XK_Kana_Lock:
key = QFK_KANA_LOCK;
break;
case XK_Kana_Shift:
key = QFK_KANA_SHIFT;
break;
case XK_Eisu_Shift:
key = QFK_EISU_SHIFT;
break;
case XK_Eisu_toggle:
key = QFK_EISU_TOGGLE;
break;
case XK_Kanji_Bangou:
key = QFK_KANJI_BANGOU;
break;
case XK_Zen_Koho:
key = QFK_ZEN_KOHO;
break;
case XK_Mae_Koho:
key = QFK_MAE_KOHO;
break;
case XF86XK_HomePage:
key = QFK_HOMEPAGE;
break;
case XF86XK_Search:
key = QFK_SEARCH;
break;
case XF86XK_Mail:
key = QFK_MAIL;
break;
case XF86XK_Favorites:
key = QFK_FAVORITES;
break;
case XF86XK_AudioMute:
key = QFK_AUDIOMUTE;
break;
case XF86XK_AudioLowerVolume:
key = QFK_AUDIOLOWERVOLUME;
break;
case XF86XK_AudioRaiseVolume:
key = QFK_AUDIORAISEVOLUME;
break;
case XF86XK_AudioPlay:
key = QFK_AUDIOPLAY;
break;
case XF86XK_Calculator:
key = QFK_CALCULATOR;
break;
case XK_Help:
key = QFK_HELP;
break;
case XK_Undo:
key = QFK_UNDO;
break;
case XK_Redo:
key = QFK_REDO;
break;
case XF86XK_New:
key = QFK_NEW;
break;
case XF86XK_Reload: // eh? it's open (hiraku) on my kb
key = QFK_RELOAD;
break;
case SunXK_Open:
//FALL THROUGH
case XF86XK_Open:
key = QFK_OPEN;
break;
case XF86XK_Close:
key = QFK_CLOSE;
break;
case XF86XK_Reply:
key = QFK_REPLY;
break;
case XF86XK_MailForward:
key = QFK_MAILFORWARD;
break;
case XF86XK_Send:
key = QFK_SEND;
break;
case XF86XK_Save:
key = QFK_SAVE;
break;
case XK_KP_Equal:
key = QFK_KP_EQUALS;
break;
case XK_parenleft:
key = QFK_LEFTPAREN;
break;
case XK_parenright:
key = QFK_RIGHTPAREN;
break;
case XF86XK_Back:
key = QFK_BACK;
break;
case XF86XK_Forward:
key = QFK_FORWARD;
break;
default:
if (keysym < 128) { // ASCII keys
key = keysym;
if ((key >= 'A') && (key <= 'Z')) {
key = key + ('a' - 'A');
}
}
break;
}
*k = key;
*u = unicode;
}
static void
in_x11_send_focus_event (int gain)
{
IE_event_t event = {
.type = gain ? ie_app_gain_focus : ie_app_lose_focus,
.when = Sys_LongTime (),
};
IE_Send_Event (&event);
}
static void
event_focusout (XEvent *event)
{
if (x_have_focus) {
x_have_focus = false;
in_x11_send_focus_event (0);
if (in_snd_block) {
S_BlockSound ();
CDAudio_Pause ();
}
X11_RestoreGamma ();
}
}
static void
event_focusin (XEvent *event)
{
in_x11_send_focus_event (1);
x_have_focus = true;
if (in_snd_block) {
S_UnblockSound ();
CDAudio_Resume ();
}
VID_UpdateGamma ();
}
static void
center_pointer (void)
{
XEvent event = {};
event.type = MotionNotify;
event.xmotion.display = x_disp;
event.xmotion.window = x_win;
event.xmotion.x = viddef.width / 2;
event.xmotion.y = viddef.height / 2;
XSendEvent (x_disp, x_win, False, PointerMotionMask, &event);
XWarpPointer (x_disp, None, x_win, 0, 0, 0, 0,
viddef.width / 2, viddef.height / 2);
}
static void
in_x11_send_axis_event (int devid, in_axisinfo_t *axis)
{
IE_event_t event = {
.type = ie_axis,
.when = Sys_LongTime (),
.axis = {
.data = x11_mouse_device.event_data,
.devid = devid,
.axis = axis->axis,
.value = axis->value,
},
};
IE_Send_Event (&event);
}
static int
in_x11_send_mouse_event (IE_mouse_type type)
{
IE_event_t event = {
.type = ie_mouse,
.when = Sys_LongTime (),
.mouse = x11_mouse,
};
event.mouse.type = type;
return IE_Send_Event (&event);
}
static int
in_x11_send_key_event (void)
{
IE_event_t event = {
.type = ie_key,
.when = Sys_LongTime (),
.key = x11_key,
};
return IE_Send_Event (&event);
}
static void
in_x11_send_button_event (int devid, in_buttoninfo_t *button, void *event_data)
{
IE_event_t event = {
.type = ie_button,
.when = Sys_LongTime (),
.button = {
.data = event_data,
.devid = devid,
.button = button->button,
.state = button->state,
},
};
IE_Send_Event (&event);
}
static void
selection_notify (XEvent *event)
{
unsigned char *data, *p;
unsigned long num_bytes;
unsigned long tmp, len;
int format;
Atom type, property;
x_time = event->xselection.time;
if ((property = event->xselection.property) == None)
return;
XGetWindowProperty (x_disp, x_win, property, 0, 0, False, AnyPropertyType,
&type, &format, &len, &num_bytes, &data);
if (num_bytes <= 0)
return;
if (XGetWindowProperty (x_disp, x_win, property, 0, num_bytes, True,
AnyPropertyType, &type, &format, &len, &tmp, &data)
!= Success) {
XFree (data); // FIXME is this correct for this instance?
return;
}
//FIXME send paste event instead of key presses?
x11_key.code = 0;
for (p = data; num_bytes && *p; p++, num_bytes--) {
x11_key.unicode = *p;
in_x11_send_key_event ();
}
XFree (data);
}
static void
event_motion (XEvent *event)
{
x_time = event->xmotion.time;
if (x_time <= x_mouse_time) {
x11_mouse.x = event->xmotion.x;
x11_mouse.y = event->xmotion.y;
return;
}
if (dga_active) {
x11_mouse_axes[0].value = event->xmotion.x_root;
x11_mouse_axes[1].value = event->xmotion.y_root;
} else {
if (vid_fullscreen || input_grabbed) {
if (!event->xmotion.send_event) {
int center_x = viddef.width / 2;
int center_y = viddef.height / 2;
unsigned dist_x = abs (center_x / 2 - event->xmotion.x);
unsigned dist_y = abs (center_y / 2 - event->xmotion.y);
x11_mouse_axes[0].value = event->xmotion.x - x11_mouse.x;
x11_mouse_axes[1].value = event->xmotion.y - x11_mouse.y;
if (dist_x > viddef.width / 4 || dist_y > viddef.height / 4) {
center_pointer ();
}
}
} else {
x11_mouse_axes[0].value = event->xmotion.x - x11_mouse.x;
x11_mouse_axes[1].value = event->xmotion.y - x11_mouse.y;
}
}
x11_mouse.shift = event->xmotion.state & 0xff;
x11_mouse.x = event->xmotion.x;
x11_mouse.y = event->xmotion.y;
if (!in_x11_send_mouse_event (ie_mousemove)) {
in_x11_send_axis_event (x11_mouse_device.devid, &x11_mouse_axes[0]);
in_x11_send_axis_event (x11_mouse_device.devid, &x11_mouse_axes[1]);
}
}
static void
event_button (XEvent *event)
{
unsigned but;
x_time = event->xbutton.time;
// x11 buttons are 1-based
but = event->xbutton.button - 1;
if (but > X11_MOUSE_BUTTONS) {
return;
}
int press = event->type == ButtonPress;
x11_mouse_buttons[but].state = press;
x11_mouse.shift = event->xmotion.state & 0xff;
x11_mouse.x = event->xmotion.x;
x11_mouse.y = event->xmotion.y;
if (press) {
x11_mouse.buttons |= 1 << but;
} else {
x11_mouse.buttons &= ~(1 << but);
}
if (!in_x11_send_mouse_event (press ? ie_mousedown : ie_mouseup)) {
in_x11_send_button_event (x11_mouse_device.devid,
&x11_mouse_buttons[but],
x11_mouse_device.event_data);
}
}
static unsigned
in_x11_process_key_button (unsigned keycode, int press)
{
// X11 protocol supports only 256 keys. The key codes are the AT scan codes
// offset by 8 (so Esc is 9 instead of 1).
unsigned key = (keycode - 8) & 0xff;
x11_key_buttons[key].state = press;
return key;
}
static void
event_key (XEvent *event)
{
unsigned key = 0;
x_time = event->xkey.time;
if (!x11_have_xi) {
key = in_x11_process_key_button (event->xkey.keycode,
event->type == KeyPress);
}
x11_key.shift = event->xmotion.state & 0xff;
XLateKey (&event->xkey, &x11_key.code, &x11_key.unicode);
if (!(event->type == KeyPress && in_x11_send_key_event ())
&& !x11_have_xi) {
in_x11_send_button_event (x11_keyboard_device.devid,
&x11_key_buttons[key],
x11_keyboard_device.event_data);
}
}
#ifdef HAVE_XI2
static void
xi_raw_key (void *event, int press)
{
if (!x_have_focus) {
//avoid being a keylogger
return;
}
XIRawEvent *re = event;
unsigned key = in_x11_process_key_button (re->detail, press);
// Send only the button press: event_key takes care of the UI key event,
// which includes character translation and repeat (XInput2 raw key events
// do not repeat)
in_x11_send_button_event (x11_keyboard_device.devid,
&x11_key_buttons[key],
x11_keyboard_device.event_data);
}
static void
xi_raw_key_press (void *event)
{
xi_raw_key (event, 1);
}
static void
xi_raw_key_resease (void *event)
{
xi_raw_key (event, 0);
}
static void
xi_raw_motion (void *event)
{
int root_x, root_y;
Window root_w, child_w;
XIRawEvent *re = event;
//FIXME it turns out mice can have multiple axes (my trackball has 4:
//usual x and y, +scroll up/down and left/right (clicky and icky, but
//still...)
unsigned mask = re->valuators.mask[0] & 3;
if (!mask) {
return;
}
x11_mouse_axes[0].value = 0;
x11_mouse_axes[1].value = 0;
for (int axis = 0, ind = 0; mask; axis++, mask >>= 1) {
if (mask & 1) {
x11_mouse_axes[axis].value = re->raw_values[ind++];
}
}
XQueryPointer (x_disp, x_win, &root_w, &child_w, &root_x, &root_y,
&x11_mouse.x, &x11_mouse.y, &x11_mouse.shift);
// want only the modifier state
x11_mouse.shift &= 0xff;
if (!in_x11_send_mouse_event (ie_mousemove)) {
in_x11_send_axis_event (x11_mouse_device.devid,
&x11_mouse_axes[0]);
in_x11_send_axis_event (x11_mouse_device.devid,
&x11_mouse_axes[1]);
}
}
static void
xi_raw_button (void *event, int press)
{
int root_x, root_y;
Window root_w, child_w;
unsigned button;
XIRawEvent *re = event;
// x11 buttons are 1-based
button = re->detail - 1;
if (button > X11_MOUSE_BUTTONS) {
return;
}
XQueryPointer (x_disp, x_win, &root_w, &child_w, &root_x, &root_y,
&x11_mouse.x, &x11_mouse.y, &x11_mouse.shift);
// want only the modifier state
x11_mouse.shift &= 0xff;
if (press) {
x11_mouse.buttons |= 1 << button;
} else {
x11_mouse.buttons &= ~(1 << button);
}
x11_mouse_buttons[button].state = press;
if (!in_x11_send_mouse_event (press ? ie_mousedown : ie_mouseup)) {
in_x11_send_button_event (x11_mouse_device.devid,
&x11_mouse_buttons[button],
x11_mouse_device.event_data);
}
}
static void
xi_raw_button_press (void *event)
{
xi_raw_button (event, 1);
}
static void
xi_raw_button_resease (void *event)
{
xi_raw_button (event, 0);
}
static void
xi_barrier_hit (void *event)
{
__auto_type be = *(XIBarrierEvent *) event;
if (be.barrier != x11_left_barrier
&& be.barrier != x11_right_barrier
&& be.barrier != x11_top_barrier
&& be.barrier != x11_bottom_barrier) {
Sys_MaskPrintf (SYS_vid, "xi_barrier_hit: bad barrier %ld\n",
be.barrier);
return;
}
if (!x11_have_pointer || !input_grabbed) {
XIBarrierReleasePointer (x_disp, be.deviceid, be.barrier, be.eventid);
}
}
static void
xi_barrier_leave (void *event)
{
}
static void
event_generic (XEvent *event)
{
// XI_LASTEVENT is the actual last event, not +1
static void (*xi_event_handlers[XI_LASTEVENT + 1]) (void *) = {
[XI_RawKeyPress] = xi_raw_key_press,
[XI_RawKeyRelease] = xi_raw_key_resease,
[XI_RawMotion] = xi_raw_motion,
[XI_RawButtonPress] = xi_raw_button_press,
[XI_RawButtonRelease] = xi_raw_button_resease,
[XI_BarrierHit] = xi_barrier_hit,
[XI_BarrierLeave] = xi_barrier_leave,
};
XGenericEventCookie *cookie = &event->xcookie;
if (cookie->type != GenericEvent || cookie->extension != xi_opcode
|| !XGetEventData (x_disp, cookie)) {
return;
}
if ((unsigned) cookie->evtype <= XI_LASTEVENT
&& xi_event_handlers[cookie->evtype]) {
xi_event_handlers[cookie->evtype] (cookie->data);
}
XFreeEventData (x_disp, cookie);
}
#endif
static void
grab_error (int code, const char *device)
{
const char *reason;
switch (code) {
case AlreadyGrabbed:
reason = "already grabbed";
break;
case GrabNotViewable:
reason = "grab not viewable";
break;
case GrabFrozen:
reason = "grab frozen";
break;
case GrabInvalidTime:
reason = "grab invalid time";
break;
default:
reason = "unknown reason";
break;
}
Sys_Printf ("failed to grab %s: %s\n", device, reason);
}
#ifdef HAVE_XFIXES
static void
in_x11_remove_barriers (void)
{
if (x11_left_barrier > 0) {
XFixesDestroyPointerBarrier (x_disp, x11_left_barrier);
x11_left_barrier = 0;
}
if (x11_right_barrier > 0) {
XFixesDestroyPointerBarrier (x_disp, x11_right_barrier);
x11_right_barrier = 0;
}
if (x11_top_barrier > 0) {
XFixesDestroyPointerBarrier (x_disp, x11_top_barrier);
x11_top_barrier = 0;
}
if (x11_bottom_barrier > 0) {
XFixesDestroyPointerBarrier (x_disp, x11_bottom_barrier);
x11_bottom_barrier = 0;
}
}
static void
in_x11_setup_barriers (int xpos, int ypos, int xlen, int ylen)
{
in_x11_remove_barriers ();
int lx = bound (0, xpos, x_width - 1);
int ty = bound (0, ypos, x_height - 1);
int rx = bound (0, xpos + xlen - 1, x_width - 1);
int by = bound (0, ypos + ylen - 1, x_height - 1);
x11_left_barrier = XFixesCreatePointerBarrier (x_disp, x_root,
lx, ty-1, lx, by+1,
BarrierPositiveX, 0, 0);
x11_right_barrier = XFixesCreatePointerBarrier (x_disp, x_root,
rx, ty-1, rx, by+1,
BarrierNegativeX, 0, 0);
x11_top_barrier = XFixesCreatePointerBarrier (x_disp, x_root,
lx-1, ty, rx+1, ty,
BarrierPositiveY, 0, 0);
x11_bottom_barrier = XFixesCreatePointerBarrier (x_disp, x_root,
lx-1, by, rx+1, by,
BarrierNegativeY, 0, 0);
}
#endif
static void
in_x11_grab_input (void *data, int grab)
{
if (!x_disp || !x_win)
return;
#ifdef HAVE_XFIXES
if (xf_opcode) {
input_grabbed = grab;
if (input_grabbed) {
in_x11_setup_barriers (x11_aw.xpos, x11_aw.ypos,
x11_aw.xlen, x11_aw.ylen);
} else {
in_x11_remove_barriers ();
}
return;
}
#endif
if (vid_fullscreen)
grab = grab || vid_fullscreen;
if ((input_grabbed && grab) || (!input_grabbed && !grab))
return;
if (grab) {
int ret;
ret = XGrabPointer (x_disp, x_win, True, X11_MOUSE_MASK, GrabModeAsync,
GrabModeAsync, x_win, None, CurrentTime);
if (ret != GrabSuccess) {
grab_error (ret, "mouse");
return;
}
ret = XGrabKeyboard (x_disp, x_win, 1, GrabModeAsync, GrabModeAsync,
CurrentTime);
if (ret != GrabSuccess) {
XUngrabPointer (x_disp, CurrentTime);
grab_error (ret, "keyboard");
return;
}
input_grabbed = 1;
in_dga_f (0, &in_dga_cvar);
} else {
XUngrabPointer (x_disp, CurrentTime);
XUngrabKeyboard (x_disp, CurrentTime);
input_grabbed = 0;
in_dga_f (0, &in_dga_cvar);
}
}
#ifdef X11_USE_SELECT
static void
in_x11_add_select (qf_fd_set *fdset, int *maxfd, void *data)
{
QF_FD_SET (x11_fd, fdset);
if (*maxfd < x11_fd) {
*maxfd = x11_fd;
}
}
static void
in_x11_check_select (qf_fd_set *fdset, void *data)
{
if (QF_FD_ISSET (x11_fd, fdset)) {
Sys_Printf ("in_x11_check_select\n");
X11_ProcessEvents (); // Get events from X server.
}
}
#else
static void
in_x11_process_events (void *data)
{
X11_ProcessEvents (); // Get events from X server.
}
#endif
static void
in_x11_axis_info (void *data, void *device, in_axisinfo_t *axes, int *numaxes)
{
x11_device_t *dev = device;
if (!axes) {
*numaxes = dev->num_axes;
return;
}
if (*numaxes > dev->num_axes) {
*numaxes = dev->num_axes;
}
memcpy (axes, dev->axes, *numaxes * sizeof (in_axisinfo_t));
}
static void
in_x11_button_info (void *data, void *device, in_buttoninfo_t *buttons,
int *numbuttons)
{
x11_device_t *dev = device;
if (!buttons) {
*numbuttons = dev->num_buttons;
return;
}
if (*numbuttons > dev->num_buttons) {
*numbuttons = dev->num_buttons;
}
memcpy (buttons, dev->buttons, *numbuttons * sizeof (in_buttoninfo_t));
}
static const char *
in_x11_get_axis_name (void *data, void *device, int axis_num)
{
x11_device_t *dev = device;
const char *name = 0;
if (dev == &x11_keyboard_device) {
// keyboards don't have axes...
} else if (dev == &x11_mouse_device) {
if ((unsigned) axis_num < SIZE (x11_mouse_axis_names)) {
name = x11_mouse_axis_names[axis_num];
}
}
return name;
}
static const char *
in_x11_get_button_name (void *data, void *device, int button_num)
{
x11_device_t *dev = device;
const char *name = 0;
if (dev == &x11_keyboard_device) {
// X11 protocol supports only 256 keys. The key codes are the AT scan
// codes offset by 8 (so Esc is 9 instead of 1).
KeyCode keycode = (button_num + 8) & 0xff;
KeySym keysym = XkbKeycodeToKeysym (x_disp, keycode, 0, 0);
if (keysym != NoSymbol) {
name = XKeysymToString (keysym);
}
} else if (dev == &x11_mouse_device) {
if ((unsigned) button_num < SIZE (x11_mouse_button_names)) {
name = x11_mouse_button_names[button_num];
}
}
return name;
}
static int
in_x11_get_axis_info (void *data, void *device, int axis_num,
in_axisinfo_t *info)
{
x11_device_t *dev = device;
if (axis_num < 0 || axis_num > dev->num_axes) {
return 0;
}
*info = dev->axes[axis_num];
return 1;
}
static int
in_x11_get_button_info (void *data, void *device, int button_num,
in_buttoninfo_t *info)
{
x11_device_t *dev = device;
if (button_num < 0 || button_num > dev->num_buttons) {
return 0;
}
*info = dev->buttons[button_num];
return 1;
}
static int
in_x11_get_axis_num (void *data, void *device, const char *axis_name)
{
x11_device_t *dev = device;
int num = -1;
if (dev == &x11_keyboard_device) {
// keyboards don't have axes...
} else if (dev == &x11_mouse_device) {
for (size_t i = 0; i < SIZE (x11_mouse_axis_names); i++) {
if (strcasecmp (axis_name, x11_mouse_axis_names[i]) == 0) {
num = i;
break;
}
}
}
return num;
}
static int
in_x11_get_button_num (void *data, void *device, const char *button_name)
{
x11_device_t *dev = device;
int num = -1;
if (dev == &x11_keyboard_device) {
KeySym keysym = XStringToKeysym (button_name);
if (keysym != NoSymbol) {
KeyCode keycode = XKeysymToKeycode (x_disp, keysym);
if (keycode != 0) {
// X11 protocol supports only 256 keys. The key codes are the
// AT scan codes offset by 8 (so Esc is 9 instead of 1).
num = (keycode - 8) & 0xff;
}
}
} else if (dev == &x11_mouse_device) {
for (size_t i = 0; i < SIZE (x11_mouse_button_names); i++) {
if (strcasecmp (button_name, x11_mouse_button_names[i]) == 0) {
num = i;
break;
}
}
}
return num;
}
static void
in_x11_shutdown (void *data)
{
Sys_MaskPrintf (SYS_vid, "in_x11_shutdown\n");
if (x_disp) {
// XAutoRepeatOn (x_disp);
dga_off ();
}
if (!in_mouse_accel)
X11_RestoreMouseAcceleration ();
}
static void
in_x11_set_device_event_data (void *device, void *event_data, void *data)
{
x11_device_t *dev = device;
dev->event_data = event_data;
}
static void *
in_x11_get_device_event_data (void *device, void *data)
{
x11_device_t *dev = device;
return dev->event_data;
}
static void
in_x11_init_cvars (void *data)
{
Cvar_Register (&in_auto_focus_cvar, 0, 0);
Cvar_Register (&in_snd_block_cvar, 0, 0);
Cvar_Register (&in_dga_cvar, in_dga_f, 0);
Cvar_Register (&in_mouse_accel_cvar, in_mouse_accel_f, 0);
}
static void
x11_add_device (x11_device_t *dev)
{
for (int i = 0; i < dev->num_axes; i++) {
dev->axes[i].axis = i;
}
for (int i = 0; i < dev->num_buttons; i++) {
dev->buttons[i].button = i;
}
dev->devid = IN_AddDevice (x11_driver_handle, dev, dev->name, dev->name);
}
#ifdef HAVE_XI2
static int
in_x11_check_xi2 (void)
{
// Support XI 2.2
int major = 2, minor = 2;
int event, error;
int ret;
if (!XQueryExtension (x_disp, "XInputExtension",
&xi_opcode, &event, &error)) {
Sys_MaskPrintf (SYS_vid, "X Input extenions not available.\n");
return 0;
}
if ((ret = XIQueryVersion (x_disp, &major, &minor)) == BadRequest) {
Sys_MaskPrintf (SYS_vid,
"No XI2 support. Server supports only %d.%d\n",
major, minor);
return 0;
} else if (ret != Success) {
Sys_MaskPrintf (SYS_vid, "in_x11_check_xi2: Xlib return bad: %d\n",
ret);
}
Sys_MaskPrintf (SYS_vid, "XI2 supported: version %d.%d, op: %d err: %d\n",
major, minor, xi_opcode, error);
if (!XQueryExtension (x_disp, "XFIXES", &xf_opcode, &event, &error)) {
Sys_MaskPrintf (SYS_vid, "X fixes extenions not available.\n");
return 0;
}
major = 5, minor = 0;
if (!XFixesQueryVersion (x_disp, &major, &minor)
|| (major * 10 + minor) < 50) {
Sys_MaskPrintf (SYS_vid, "Need X fixes 5.0.\n");
return 0;
}
Sys_MaskPrintf (SYS_vid,
"XFixes supported: version %d.%d, op: %d err: %d\n",
major, minor, xf_opcode, error);
return 1;
}
static void
in_x11_xi_select_events (void)
{
byte mask[(XI_LASTEVENT + 7) / 8] = {};
XIEventMask evmask = {
.deviceid = XIAllMasterDevices,
.mask_len = sizeof (mask),
.mask = mask,
};
XISetMask (mask, XI_BarrierHit);
XISetMask (mask, XI_BarrierLeave);
XISetMask (mask, XI_RawKeyPress);
XISetMask (mask, XI_RawKeyRelease);
XISelectEvents (x_disp, x_root, &evmask, 1);
}
static void
in_x11_xi_setup_grabs (void)
{
// FIXME normal apps aren't supposed to care about the client pointer,
// but grabbing all master devices grabs the keyboard, too, which blocks
// alt-tab and the like
int dev;
XIGetClientPointer (x_disp, x_win, &dev);
byte mask[(XI_LASTEVENT + 7) / 8] = {};
XIEventMask evmask = {
.deviceid = dev,
.mask_len = sizeof (mask),
.mask = mask,
};
XISetMask (mask, XI_RawMotion);
XISetMask (mask, XI_RawButtonPress);
XISetMask (mask, XI_RawButtonRelease);
XIGrabModifiers modif = {
.modifiers = XIAnyModifier,
};
// Grab mouse events on the app window so window manager actions (eg,
// alt-middle-click) don't interfere. However, the keyboard is not grabbed
// so the user always has a way to take control (assuming the window
// manager provides such, but most do).
XIGrabEnter (x_disp, dev, x_win, None, XIGrabModeAsync, XIGrabModeAsync,
0, &evmask, 1, &modif);
}
#endif
static void
x11_app_window (const IE_event_t *ie_event)
{
x11_aw = ie_event->app_window;
Sys_MaskPrintf (SYS_vid, "window: %d %d %d %d\n",
x11_aw.xpos, x11_aw.ypos, x11_aw.xlen, x11_aw.ylen);
#ifdef HAVE_XFIXES
if (input_grabbed) {
in_x11_setup_barriers (x11_aw.xpos, x11_aw.ypos,
x11_aw.xlen, x11_aw.ylen);
}
#endif
}
static int
x11_event_handler (const IE_event_t *ie_event, void *unused)
{
static void (*handlers[ie_event_count]) (const IE_event_t *ie_event) = {
[ie_app_window] = x11_app_window,
};
if ((unsigned) ie_event->type >= ie_event_count
|| !handlers[ie_event->type]) {
return 0;
}
handlers[ie_event->type] (ie_event);
return 1;
}
long
IN_X11_Preinit (void)
{
if (!x_disp)
Sys_Error ("IN: No display!!");
long event_mask = X11_INPUT_MASK;
x11_event_handler_id = IE_Add_Handler (x11_event_handler, 0);
#ifdef HAVE_XI2
x11_have_xi = in_x11_check_xi2 ();
#endif
X11_AddEvent (KeyPress, &event_key);
X11_AddEvent (KeyRelease, &event_key);
X11_AddEvent (FocusIn, &event_focusin);
X11_AddEvent (FocusOut, &event_focusout);
X11_AddEvent (SelectionNotify, &selection_notify);
X11_AddEvent (EnterNotify, &enter_notify);
X11_AddEvent (LeaveNotify, &leave_notify);
if (x11_have_xi) {
#ifdef HAVE_XI2
X11_AddEvent (GenericEvent, &event_generic);
#endif
} else {
X11_AddEvent (MotionNotify, &event_motion);
X11_AddEvent (ButtonPress, &event_button);
X11_AddEvent (ButtonRelease, &event_button);
}
Cmd_AddCommand ("in_paste_buffer", in_paste_buffer_f,
"Paste the contents of X's C&P buffer to the console");
return event_mask;
}
void
IN_X11_Postinit (void)
{
if (!x_disp)
Sys_Error ("IN: No display!!");
if (!x_win)
Sys_Error ("IN: No window!!");
if (x11_have_xi) {
#ifdef HAVE_XI2
in_x11_xi_select_events ();
in_x11_xi_setup_grabs ();
#endif
} else {
dga_avail = VID_CheckDGA (x_disp, NULL, NULL, NULL);
Sys_MaskPrintf (SYS_vid, "VID_CheckDGA returned %d\n",
dga_avail);
}
}
static void
in_x11_init (void *data)
{
x11_fd = ConnectionNumber (x_disp);
x11_add_device (&x11_keyboard_device);
x11_add_device (&x11_mouse_device);
}
static void
in_x11_clear_states (void *data)
{
}
static in_driver_t in_x11_driver = {
.init_cvars = in_x11_init_cvars,
.init = in_x11_init,
.shutdown = in_x11_shutdown,
.set_device_event_data = in_x11_set_device_event_data,
.get_device_event_data = in_x11_get_device_event_data,
#ifdef X11_USE_SELECT
.add_select = in_x11_add_select,
.check_select = in_x11_check_select,
#else
.process_events = in_x11_process_events,
#endif
.clear_states = in_x11_clear_states,
.grab_input = in_x11_grab_input,
.axis_info = in_x11_axis_info,
.button_info = in_x11_button_info,
.get_axis_name = in_x11_get_axis_name,
.get_button_name = in_x11_get_button_name,
.get_axis_num = in_x11_get_axis_num,
.get_button_num = in_x11_get_button_num,
.get_axis_info = in_x11_get_axis_info,
.get_button_info = in_x11_get_button_info,
};
static void __attribute__((constructor))
in_x11_register_driver (void)
{
x11_driver_handle = IN_RegisterDriver (&in_x11_driver, 0);
}
int x11_force_link;
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