/* Input event support for Emacs on the Microsoft W32 API.
Copyright (C) 1992-1993, 1995, 2001-2011 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 3 of the License, or
(at your option) any later version.
GNU Emacs 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 GNU Emacs. If not, see . */
/*
Drew Bliss 01-Oct-93
Adapted from ntkbd.c by Tim Fleehart
*/
#include
#include
#include
#include
#ifndef MOUSE_MOVED
#define MOUSE_MOVED 1
#endif
#include "lisp.h"
#include "keyboard.h"
#include "frame.h"
#include "dispextern.h"
#include "blockinput.h"
#include "termhooks.h"
#include "w32heap.h"
#include "w32term.h"
/* stdin, from w32console.c */
extern HANDLE keyboard_handle;
/* Info for last mouse motion */
static COORD movement_pos;
static Time movement_time;
/* from w32fns.c */
extern unsigned int map_keypad_keys (unsigned int, unsigned int);
extern unsigned int w32_key_to_modifier (int key);
/* Event queue */
#define EVENT_QUEUE_SIZE 50
static INPUT_RECORD event_queue[EVENT_QUEUE_SIZE];
static INPUT_RECORD *queue_ptr = event_queue, *queue_end = event_queue;
/* Temporarily store lead byte of DBCS input sequences. */
static char dbcs_lead = 0;
/* Set by w32_console_toggle_lock_key. */
int faked_key;
static int
fill_queue (BOOL block)
{
BOOL rc;
DWORD events_waiting;
if (queue_ptr < queue_end)
return queue_end-queue_ptr;
if (!block)
{
/* Check to see if there are some events to read before we try
because we can't block. */
if (!GetNumberOfConsoleInputEvents (keyboard_handle, &events_waiting))
return -1;
if (events_waiting == 0)
return 0;
}
rc = ReadConsoleInput (keyboard_handle, event_queue, EVENT_QUEUE_SIZE,
&events_waiting);
if (!rc)
return -1;
queue_ptr = event_queue;
queue_end = event_queue + events_waiting;
return (int) events_waiting;
}
/* In a generic, multi-frame world this should take a console handle
and return the frame for it
Right now, there's only one frame so return it. */
static FRAME_PTR
get_frame (void)
{
return SELECTED_FRAME ();
}
/* return code -1 means that event_queue_ptr won't be incremented.
In other word, this event makes two key codes. (by himi) */
static int
key_event (KEY_EVENT_RECORD *event, struct input_event *emacs_ev, int *isdead)
{
static int mod_key_state = 0;
int wParam;
*isdead = 0;
/* Skip key-up events. */
if (!event->bKeyDown)
{
switch (event->wVirtualKeyCode)
{
case VK_LWIN:
mod_key_state &= ~LEFT_WIN_PRESSED;
break;
case VK_RWIN:
mod_key_state &= ~RIGHT_WIN_PRESSED;
break;
case VK_APPS:
mod_key_state &= ~APPS_PRESSED;
break;
}
return 0;
}
/* Ignore keystrokes we fake ourself; see below. */
if (faked_key == event->wVirtualKeyCode)
{
faked_key = 0;
return 0;
}
/* To make it easier to debug this code, ignore modifier keys! */
switch (event->wVirtualKeyCode)
{
case VK_LWIN:
if (NILP (Vw32_pass_lwindow_to_system))
{
/* Prevent system from acting on keyup (which opens the Start
menu if no other key was pressed) by simulating a press of
Space which we will ignore. */
if ((mod_key_state & LEFT_WIN_PRESSED) == 0)
{
if (NUMBERP (Vw32_phantom_key_code))
faked_key = XUINT (Vw32_phantom_key_code) & 255;
else
faked_key = VK_SPACE;
keybd_event (faked_key, (BYTE) MapVirtualKey (faked_key, 0), 0, 0);
}
}
mod_key_state |= LEFT_WIN_PRESSED;
if (!NILP (Vw32_lwindow_modifier))
return 0;
break;
case VK_RWIN:
if (NILP (Vw32_pass_rwindow_to_system))
{
if ((mod_key_state & RIGHT_WIN_PRESSED) == 0)
{
if (NUMBERP (Vw32_phantom_key_code))
faked_key = XUINT (Vw32_phantom_key_code) & 255;
else
faked_key = VK_SPACE;
keybd_event (faked_key, (BYTE) MapVirtualKey (faked_key, 0), 0, 0);
}
}
mod_key_state |= RIGHT_WIN_PRESSED;
if (!NILP (Vw32_rwindow_modifier))
return 0;
break;
case VK_APPS:
mod_key_state |= APPS_PRESSED;
if (!NILP (Vw32_apps_modifier))
return 0;
break;
case VK_CAPITAL:
/* Decide whether to treat as modifier or function key. */
if (NILP (Vw32_enable_caps_lock))
goto disable_lock_key;
return 0;
case VK_NUMLOCK:
/* Decide whether to treat as modifier or function key. */
if (NILP (Vw32_enable_num_lock))
goto disable_lock_key;
return 0;
case VK_SCROLL:
/* Decide whether to treat as modifier or function key. */
if (NILP (Vw32_scroll_lock_modifier))
goto disable_lock_key;
return 0;
disable_lock_key:
/* Ensure the appropriate lock key state is off (and the
indicator light as well). */
wParam = event->wVirtualKeyCode;
if (GetAsyncKeyState (wParam) & 0x8000)
{
/* Fake another press of the relevant key. Apparently, this
really is the only way to turn off the indicator. */
faked_key = wParam;
keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0),
KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0),
KEYEVENTF_EXTENDEDKEY | 0, 0);
keybd_event ((BYTE) wParam, (BYTE) MapVirtualKey (wParam, 0),
KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
}
break;
case VK_MENU:
case VK_CONTROL:
case VK_SHIFT:
return 0;
case VK_CANCEL:
/* Windows maps Ctrl-Pause (aka Ctrl-Break) into VK_CANCEL,
which is confusing for purposes of key binding; convert
VK_CANCEL events into VK_PAUSE events. */
event->wVirtualKeyCode = VK_PAUSE;
break;
case VK_PAUSE:
/* Windows maps Ctrl-NumLock into VK_PAUSE, which is confusing
for purposes of key binding; convert these back into
VK_NUMLOCK events, at least when we want to see NumLock key
presses. (Note that there is never any possibility that
VK_PAUSE with Ctrl really is C-Pause as per above.) */
if (NILP (Vw32_enable_num_lock)
&& (event->dwControlKeyState
& (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED)) != 0)
event->wVirtualKeyCode = VK_NUMLOCK;
break;
}
/* Recognize state of Windows and Apps keys. */
event->dwControlKeyState |= mod_key_state;
/* Distinguish numeric keypad keys from extended keys. */
event->wVirtualKeyCode =
map_keypad_keys (event->wVirtualKeyCode,
(event->dwControlKeyState & ENHANCED_KEY));
if (lispy_function_keys[event->wVirtualKeyCode] == 0)
{
if (!NILP (Vw32_recognize_altgr)
&& (event->dwControlKeyState & LEFT_CTRL_PRESSED)
&& (event->dwControlKeyState & RIGHT_ALT_PRESSED))
{
/* Don't try to interpret AltGr key chords; ToAscii seems not
to process them correctly. */
}
/* Handle key chords including any modifiers other than shift
directly, in order to preserve as much modifier information as
possible. */
else if (event->dwControlKeyState
& ( RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED
| RIGHT_ALT_PRESSED | LEFT_ALT_PRESSED
| (!NILP (Vw32_lwindow_modifier) ? LEFT_WIN_PRESSED : 0)
| (!NILP (Vw32_rwindow_modifier) ? RIGHT_WIN_PRESSED : 0)
| (!NILP (Vw32_apps_modifier) ? APPS_PRESSED : 0)
| (!NILP (Vw32_scroll_lock_modifier) ? SCROLLLOCK_ON : 0)))
{
/* Don't translate modified alphabetic keystrokes, so the user
doesn't need to constantly switch layout to type control or
meta keystrokes when the normal layout translates
alphabetic characters to non-ascii characters. */
if ('A' <= event->wVirtualKeyCode && event->wVirtualKeyCode <= 'Z')
{
event->uChar.AsciiChar = event->wVirtualKeyCode;
if ((event->dwControlKeyState & SHIFT_PRESSED) == 0)
event->uChar.AsciiChar += ('a' - 'A');
}
/* Try to handle unrecognized keystrokes by determining the
base character (ie. translating the base key plus shift
modifier). */
else if (event->uChar.AsciiChar == 0)
w32_kbd_patch_key (event);
}
if (event->uChar.AsciiChar == 0)
{
emacs_ev->kind = NO_EVENT;
return 0;
}
else if (event->uChar.AsciiChar > 0)
{
emacs_ev->kind = ASCII_KEYSTROKE_EVENT;
emacs_ev->code = event->uChar.AsciiChar;
}
else if (event->uChar.UnicodeChar > 0)
{
emacs_ev->kind = MULTIBYTE_CHAR_KEYSTROKE_EVENT;
emacs_ev->code = event->uChar.UnicodeChar;
}
else
{
/* Fallback for non-Unicode versions of Windows. */
wchar_t code;
char dbcs[2];
char cp[20];
int cpId;
/* Get the codepage to interpret this key with. */
GetLocaleInfo (GetThreadLocale (),
LOCALE_IDEFAULTANSICODEPAGE, cp, 20);
cpId = atoi (cp);
dbcs[0] = dbcs_lead;
dbcs[1] = event->uChar.AsciiChar;
if (dbcs_lead)
{
dbcs_lead = 0;
if (!MultiByteToWideChar (cpId, 0, dbcs, 2, &code, 1))
{
/* Garbage */
DebPrint (("Invalid DBCS sequence: %d %d\n",
dbcs[0], dbcs[1]));
emacs_ev->kind = NO_EVENT;
}
}
else if (IsDBCSLeadByteEx (cpId, dbcs[1]))
{
dbcs_lead = dbcs[1];
emacs_ev->kind = NO_EVENT;
}
else
{
if (!MultiByteToWideChar (cpId, 0, &dbcs[1], 1, &code, 1))
{
/* Garbage */
DebPrint (("Invalid character: %d\n", dbcs[1]));
emacs_ev->kind = NO_EVENT;
}
}
emacs_ev->kind = MULTIBYTE_CHAR_KEYSTROKE_EVENT;
emacs_ev->code = code;
}
}
else
{
emacs_ev->kind = NON_ASCII_KEYSTROKE_EVENT;
emacs_ev->code = event->wVirtualKeyCode;
}
XSETFRAME (emacs_ev->frame_or_window, get_frame ());
emacs_ev->modifiers = w32_kbd_mods_to_emacs (event->dwControlKeyState,
event->wVirtualKeyCode);
emacs_ev->timestamp = GetTickCount ();
return 1;
}
/* Mouse position hook. */
void
w32_console_mouse_position (FRAME_PTR *f,
int insist,
Lisp_Object *bar_window,
enum scroll_bar_part *part,
Lisp_Object *x,
Lisp_Object *y,
Time *time)
{
BLOCK_INPUT;
insist = insist;
*f = get_frame ();
*bar_window = Qnil;
*part = 0;
SELECTED_FRAME ()->mouse_moved = 0;
XSETINT (*x, movement_pos.X);
XSETINT (*y, movement_pos.Y);
*time = movement_time;
UNBLOCK_INPUT;
}
/* Remember mouse motion and notify emacs. */
static void
mouse_moved_to (int x, int y)
{
/* If we're in the same place, ignore it */
if (x != movement_pos.X || y != movement_pos.Y)
{
SELECTED_FRAME ()->mouse_moved = 1;
movement_pos.X = x;
movement_pos.Y = y;
movement_time = GetTickCount ();
}
}
/* Consoles return button bits in a strange order:
least significant - Leftmost button
next - Rightmost button
next - Leftmost+1
next - Leftmost+2...
Assume emacs likes three button mice, so
Left == 0
Middle == 1
Right == 2
Others increase from there. */
#define NUM_TRANSLATED_MOUSE_BUTTONS 3
static int emacs_button_translation[NUM_TRANSLATED_MOUSE_BUTTONS] =
{
0, 2, 1
};
static int
do_mouse_event (MOUSE_EVENT_RECORD *event,
struct input_event *emacs_ev)
{
static DWORD button_state = 0;
DWORD but_change, mask;
int i;
if (event->dwEventFlags == MOUSE_MOVED)
{
/* For movement events we just note that the mouse has moved
so that emacs will generate drag events. */
mouse_moved_to (event->dwMousePosition.X, event->dwMousePosition.Y);
return 0;
}
/* It looks like the console code sends us a mouse event with
dwButtonState == 0 when a window is activated. Ignore this case. */
if (event->dwButtonState == button_state)
return 0;
emacs_ev->kind = MOUSE_CLICK_EVENT;
/* Find out what button has changed state since the last button event. */
but_change = button_state ^ event->dwButtonState;
mask = 1;
for (i = 0; mask; i++, mask <<= 1)
if (but_change & mask)
{
if (i < NUM_TRANSLATED_MOUSE_BUTTONS)
emacs_ev->code = emacs_button_translation[i];
else
emacs_ev->code = i;
break;
}
button_state = event->dwButtonState;
emacs_ev->timestamp = GetTickCount ();
emacs_ev->modifiers = w32_kbd_mods_to_emacs (event->dwControlKeyState, 0) |
((event->dwButtonState & mask) ? down_modifier : up_modifier);
XSETFASTINT (emacs_ev->x, event->dwMousePosition.X);
XSETFASTINT (emacs_ev->y, event->dwMousePosition.Y);
/* for Mule 2.2 (Based on Emacs 19.28 */
#ifdef MULE
XSET (emacs_ev->frame_or_window, Lisp_Frame, get_frame ());
#else
XSETFRAME (emacs_ev->frame_or_window, get_frame ());
#endif
return 1;
}
static void
resize_event (WINDOW_BUFFER_SIZE_RECORD *event)
{
FRAME_PTR f = get_frame ();
change_frame_size (f, event->dwSize.Y, event->dwSize.X, 0, 1, 0);
SET_FRAME_GARBAGED (f);
}
static void
maybe_generate_resize_event (void)
{
CONSOLE_SCREEN_BUFFER_INFO info;
FRAME_PTR f = get_frame ();
GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE), &info);
/* It is okay to call this unconditionally, since it will do nothing
if the size hasn't actually changed. */
change_frame_size (f,
1 + info.srWindow.Bottom - info.srWindow.Top,
1 + info.srWindow.Right - info.srWindow.Left,
0, 0, 0);
}
int
w32_console_read_socket (struct terminal *terminal,
int expected,
struct input_event *hold_quit)
{
int nev, ret = 0, add;
int isdead;
if (interrupt_input_blocked)
{
interrupt_input_pending = 1;
return -1;
}
interrupt_input_pending = 0;
BLOCK_INPUT;
for (;;)
{
nev = fill_queue (0);
if (nev <= 0)
{
/* If nev == -1, there was some kind of error
If nev == 0 then waitp must be zero and no events were available
so return. */
UNBLOCK_INPUT;
return nev;
}
while (nev > 0)
{
struct input_event inev;
EVENT_INIT (inev);
inev.kind = NO_EVENT;
inev.arg = Qnil;
switch (queue_ptr->EventType)
{
case KEY_EVENT:
add = key_event (&queue_ptr->Event.KeyEvent, &inev, &isdead);
if (add == -1) /* 95.7.25 by himi */
{
queue_ptr--;
add = 1;
}
if (add)
kbd_buffer_store_event_hold (&inev, hold_quit);
break;
case MOUSE_EVENT:
add = do_mouse_event (&queue_ptr->Event.MouseEvent, &inev);
if (add)
kbd_buffer_store_event_hold (&inev, hold_quit);
break;
case WINDOW_BUFFER_SIZE_EVENT:
if (w32_use_full_screen_buffer)
resize_event (&queue_ptr->Event.WindowBufferSizeEvent);
break;
case MENU_EVENT:
case FOCUS_EVENT:
/* Internal event types, ignored. */
break;
}
queue_ptr++;
nev--;
}
if (ret > 0 || expected == 0)
break;
}
/* We don't get told about changes in the window size (only the buffer
size, which we no longer care about), so we have to check it
periodically. */
if (!w32_use_full_screen_buffer)
maybe_generate_resize_event ();
UNBLOCK_INPUT;
return ret;
}