/* Input event support for Windows NT port of GNU Emacs. Copyright (C) 1992, 1993 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 2, 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; see the file COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. Drew Bliss 01-Oct-93 Adapted from ntkbd.c by Tim Fleehart */ #include "config.h" #include #include #include #include "lisp.h" #include "frame.h" #include "blockinput.h" #include "termhooks.h" /* stdin, from ntterm */ extern HANDLE keyboard_handle; /* Indicate mouse motion, from keyboard.c */ extern int mouse_moved; /* Info for last mouse motion */ static COORD movement_pos; static DWORD movement_time; /* from keyboard.c */ extern void reinvoke_input_signal (void); /* from dispnew.c */ extern int change_frame_size (FRAME_PTR, int, int, int, int); /* 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; 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; } #ifdef MULTI_FRAME #define SET_FRAME(o, f) XSETFRAME (o, f) #else #define SET_FRAME(o, f) ((o) = Qnil) #endif /* Translate console modifiers to emacs modifiers. */ static int nt_kbd_mods_to_emacs (DWORD mods) { return ((mods & (RIGHT_ALT_PRESSED | LEFT_ALT_PRESSED)) ? meta_modifier : 0) | ((mods & (RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) ? ctrl_modifier : 0) | ((mods & (SHIFT_PRESSED | CAPSLOCK_ON)) ? shift_modifier : 0); } /* Map virtual key codes into: -1 - Ignore this key -2 - ASCII char Other - Map non-ASCII keys into X keysyms so that they are looked up correctly in keyboard.c Return, escape and tab are mapped to ASCII rather than coming back as non-ASCII to be more compatible with old-style keyboard support. */ static int map_virt_key[256] = { -1, -1, /* VK_LBUTTON */ -1, /* VK_RBUTTON */ 0x69, /* VK_CANCEL */ -1, /* VK_MBUTTON */ -1, -1, -1, 8, /* VK_BACK */ -2, /* VK_TAB */ -1, -1, 11, /* VK_CLEAR */ -2, /* VK_RETURN */ -1, -1, -1, /* VK_SHIFT */ -1, /* VK_CONTROL */ -1, /* VK_MENU */ 0x13, /* VK_PAUSE */ -1, /* VK_CAPITAL */ -1, -1, -1, -1, -1, -1, -2, /* VK_ESCAPE */ -1, -1, -1, -1, -2, /* VK_SPACE */ 0x55, /* VK_PRIOR */ 0x56, /* VK_NEXT */ 0x57, /* VK_END */ 0x50, /* VK_HOME */ 0x51, /* VK_LEFT */ 0x52, /* VK_UP */ 0x53, /* VK_RIGHT */ 0x54, /* VK_DOWN */ 0x60, /* VK_SELECT */ 0x61, /* VK_PRINT */ 0x62, /* VK_EXECUTE */ -1, /* VK_SNAPSHOT */ 0x63, /* VK_INSERT */ 0xff, /* VK_DELETE */ 0x6a, /* VK_HELP */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, /* 0 - 9 */ -1, -1, -1, -1, -1, -1, -1, -2, -2, -2, -2, -2, -2, -2, -2, /* A - Z */ -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, 0xb0, /* VK_NUMPAD0 */ 0xb1, /* VK_NUMPAD1 */ 0xb2, /* VK_NUMPAD2 */ 0xb3, /* VK_NUMPAD3 */ 0xb4, /* VK_NUMPAD4 */ 0xb5, /* VK_NUMPAD5 */ 0xb6, /* VK_NUMPAD6 */ 0xb7, /* VK_NUMPAD7 */ 0xb8, /* VK_NUMPAD8 */ 0xb9, /* VK_NUMPAD9 */ 0xaa, /* VK_MULTIPLY */ 0xab, /* VK_ADD */ 0xac, /* VK_SEPARATOR */ 0xad, /* VK_SUBTRACT */ 0xae, /* VK_DECIMAL */ 0xaf, /* VK_DIVIDE */ 0xbe, /* VK_F1 */ 0xbf, /* VK_F2 */ 0xc0, /* VK_F3 */ 0xc1, /* VK_F4 */ 0xc2, /* VK_F5 */ 0xc3, /* VK_F6 */ 0xc4, /* VK_F7 */ 0xc5, /* VK_F8 */ 0xc6, /* VK_F9 */ 0xc7, /* VK_F10 */ 0xc8, /* VK_F11 */ 0xc9, /* VK_F12 */ 0xca, /* VK_F13 */ 0xcb, /* VK_F14 */ 0xcc, /* VK_F15 */ 0xcd, /* VK_F16 */ 0xce, /* VK_F17 */ 0xcf, /* VK_F18 */ 0xd0, /* VK_F19 */ 0xd1, /* VK_F20 */ 0xd2, /* VK_F21 */ 0xd3, /* VK_F22 */ 0xd4, /* VK_F23 */ 0xd5, /* VK_F24 */ -1, -1, -1, -1, -1, -1, -1, -1, 0x7f, /* VK_NUMLOCK */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x9f */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xaf */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb9 */ -2, /* ; */ -2, /* = */ -2, /* , */ -2, /* \ */ -2, /* . */ -2, /* / */ -2, /* ` */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xcf */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xda */ -2, /* [ */ -2, /* - */ -2, /* ] */ -2, /* ' */ -1, /* 0xdf */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xef */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xff */ }; static int key_event (KEY_EVENT_RECORD *event, struct input_event *emacs_ev) { int map; /* Skip key-up events. */ if (event->bKeyDown == FALSE) return 0; if (event->wVirtualKeyCode > 0xff) { printf ("Unknown key code %d\n", event->wVirtualKeyCode); return 0; } /* BUGBUG - Ignores the repeat count It's questionable whether we want to obey the repeat count anyway since keys usually aren't repeated unless key events back up in the queue. If they're backing up then we don't generally want to honor them later since that leads to significant slop in cursor motion when the system is under heavy load. */ map = map_virt_key[event->wVirtualKeyCode]; if (map == -1) { return 0; } else if (map == -2) { /* ASCII */ emacs_ev->kind = ascii_keystroke; XSETINT (emacs_ev->code, event->uChar.AsciiChar); } else { /* non-ASCII */ emacs_ev->kind = non_ascii_keystroke; /* * make_lispy_event () now requires non-ascii codes to have * the full X keysym values (2nd byte is 0xff). add it on. */ map |= 0xff00; XSETINT (emacs_ev->code, map); } SET_FRAME (emacs_ev->frame_or_window, get_frame ()); emacs_ev->modifiers = nt_kbd_mods_to_emacs (event->dwControlKeyState); emacs_ev->timestamp = GetTickCount (); return 1; } /* Mouse position hook. */ void win32_mouse_position (FRAME_PTR *f, Lisp_Object *bar_window, enum scroll_bar_part *part, Lisp_Object *x, Lisp_Object *y, unsigned long *time) { BLOCK_INPUT; *f = get_frame (); *bar_window = Qnil; *part = 0; mouse_moved = 0; *x = movement_pos.X; *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) { 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. */ static int emacs_button_translation[NUM_MOUSE_BUTTONS] = { 0, 2, 1, 3, 4, }; 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; /* Find out what button has changed state since the last button event. */ but_change = button_state ^ event->dwButtonState; mask = 1; for (i = 0; i < NUM_MOUSE_BUTTONS; i++, mask <<= 1) if (but_change & mask) { XSETINT (emacs_ev->code, emacs_button_translation[i]); break; } /* If the changed button is out of emacs' range (highly unlikely) ignore this event. */ if (i == NUM_MOUSE_BUTTONS) return 0; button_state = event->dwButtonState; emacs_ev->timestamp = GetTickCount (); emacs_ev->modifiers = nt_kbd_mods_to_emacs (event->dwControlKeyState) | ((event->dwButtonState & mask) ? down_modifier : up_modifier); XSETFASTINT (emacs_ev->x, event->dwMousePosition.X); XSETFASTINT (emacs_ev->y, event->dwMousePosition.Y); SET_FRAME (emacs_ev->frame_or_window, get_frame ()); 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); SET_FRAME_GARBAGED (f); } int win32_read_socket (int sd, struct input_event *bufp, int numchars, int waitp, int expected) { BOOL no_events = TRUE; int nev, ret = 0, add; if (interrupt_input_blocked) { interrupt_input_pending = 1; return -1; } interrupt_input_pending = 0; BLOCK_INPUT; for (;;) { nev = fill_queue (waitp != 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 && numchars > 0) { switch (queue_ptr->EventType) { case KEY_EVENT: add = key_event (&queue_ptr->Event.KeyEvent, bufp); bufp += add; ret += add; numchars -= add; break; case MOUSE_EVENT: add = do_mouse_event (&queue_ptr->Event.MouseEvent, bufp); bufp += add; ret += add; numchars -= add; break; case WINDOW_BUFFER_SIZE_EVENT: 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; } UNBLOCK_INPUT; return ret; }