diff options
Diffstat (limited to 'curses.c')
| -rw-r--r-- | curses.c | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/curses.c b/curses.c new file mode 100644 index 0000000000..d13a7d7427 --- /dev/null +++ b/curses.c @@ -0,0 +1,370 @@ +/* + * QEMU curses/ncurses display driver + * + * Copyright (c) 2005 Andrzej Zaborowski <balrog@zabor.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu-common.h" +#include "console.h" +#include "sysemu.h" + +#include <curses.h> + +#ifndef _WIN32 +#include <signal.h> +#include <sys/ioctl.h> +#include <termios.h> +#endif + +#define FONT_HEIGHT 16 +#define FONT_WIDTH 8 + +static console_ch_t screen[160 * 100]; +static WINDOW *screenpad = NULL; +static int width, height, gwidth, gheight, invalidate; +static int px, py, sminx, sminy, smaxx, smaxy; + +static void curses_update(DisplayState *ds, int x, int y, int w, int h) +{ + chtype *line; + + line = ((chtype *) screen) + y * width; + for (h += y; y < h; y ++, line += width) + mvwaddchnstr(screenpad, y, 0, line, width); + + pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1); + refresh(); +} + +static void curses_calc_pad(void) +{ + if (is_graphic_console()) { + width = gwidth; + height = gheight; + } else { + width = COLS; + height = LINES; + } + + if (screenpad) + delwin(screenpad); + + clear(); + refresh(); + + screenpad = newpad(height, width); + + if (width > COLS) { + px = (width - COLS) / 2; + sminx = 0; + smaxx = COLS; + } else { + px = 0; + sminx = (COLS - width) / 2; + smaxx = sminx + width; + } + + if (height > LINES) { + py = (height - LINES) / 2; + sminy = 0; + smaxy = LINES; + } else { + py = 0; + sminy = (LINES - height) / 2; + smaxy = sminy + height; + } +} + +static void curses_resize(DisplayState *ds, int w, int h) +{ + if (w == gwidth && h == gheight) + return; + + gwidth = w; + gheight = h; + + curses_calc_pad(); +} + +#ifndef _WIN32 +#ifdef SIGWINCH +static void curses_winch_handler(int signum) +{ + struct winsize { + unsigned short ws_row; + unsigned short ws_col; + unsigned short ws_xpixel; /* unused */ + unsigned short ws_ypixel; /* unused */ + } ws; + + /* terminal size changed */ + if (ioctl(1, TIOCGWINSZ, &ws) == -1) + return; + + resize_term(ws.ws_row, ws.ws_col); + curses_calc_pad(); + invalidate = 1; + + /* some systems require this */ + signal(SIGWINCH, curses_winch_handler); +} +#endif +#endif + +static void curses_cursor_position(DisplayState *ds, int x, int y) +{ + if (x >= 0) { + x = sminx + x - px; + y = sminy + y - py; + + if (x >= 0 && y >= 0 && x < COLS && y < LINES) { + move(y, x); + curs_set(1); + /* it seems that curs_set(1) must always be called before + * curs_set(2) for the latter to have effect */ + if (!is_graphic_console()) + curs_set(2); + return; + } + } + + curs_set(0); +} + +/* generic keyboard conversion */ + +#include "curses_keys.h" +#include "keymaps.c" + +static kbd_layout_t *kbd_layout = 0; +static int keycode2keysym[CURSES_KEYS]; + +static void curses_refresh(DisplayState *ds) +{ + int chr, nextchr, keysym, keycode; + + if (invalidate) { + clear(); + refresh(); + curses_calc_pad(); + ds->width = FONT_WIDTH * width; + ds->height = FONT_HEIGHT * height; + vga_hw_invalidate(); + invalidate = 0; + } + + vga_hw_text_update(screen); + + nextchr = ERR; + while (1) { + /* while there are any pending key strokes to process */ + if (nextchr == ERR) + chr = getch(); + else { + chr = nextchr; + nextchr = ERR; + } + + if (chr == ERR) + break; + + /* this shouldn't occur when we use a custom SIGWINCH handler */ + if (chr == KEY_RESIZE) { + clear(); + refresh(); + curses_calc_pad(); + curses_update(ds, 0, 0, width, height); + ds->width = FONT_WIDTH * width; + ds->height = FONT_HEIGHT * height; + continue; + } + + keycode = curses2keycode[chr]; + if (keycode == -1) + continue; + + /* alt key */ + if (keycode == 1) { + nextchr = getch(); + + if (nextchr != ERR) { + keycode = curses2keycode[nextchr]; + nextchr = ERR; + if (keycode == -1) + continue; + + keycode |= ALT; + + /* process keys reserved for qemu */ + if (keycode >= QEMU_KEY_CONSOLE0 && + keycode < QEMU_KEY_CONSOLE0 + 9) { + erase(); + wnoutrefresh(stdscr); + console_select(keycode - QEMU_KEY_CONSOLE0); + + invalidate = 1; + continue; + } + } + } + + if (kbd_layout && !(keycode & GREY)) { + keysym = keycode2keysym[keycode & KEY_MASK]; + if (keysym == -1) + keysym = chr; + + keycode &= ~KEY_MASK; + keycode |= keysym2scancode(kbd_layout, keysym); + } + + if (is_graphic_console()) { + /* since terminals don't know about key press and release + * events, we need to emit both for each key received */ + if (keycode & SHIFT) + kbd_put_keycode(SHIFT_CODE); + if (keycode & CNTRL) + kbd_put_keycode(CNTRL_CODE); + if (keycode & ALT) + kbd_put_keycode(ALT_CODE); + if (keycode & GREY) + kbd_put_keycode(GREY_CODE); + kbd_put_keycode(keycode & KEY_MASK); + if (keycode & GREY) + kbd_put_keycode(GREY_CODE); + kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE); + if (keycode & ALT) + kbd_put_keycode(ALT_CODE | KEY_RELEASE); + if (keycode & CNTRL) + kbd_put_keycode(CNTRL_CODE | KEY_RELEASE); + if (keycode & SHIFT) + kbd_put_keycode(SHIFT_CODE | KEY_RELEASE); + } else { + keysym = curses2keysym[chr]; + if (keysym == -1) + keysym = chr; + + kbd_put_keysym(keysym); + } + } +} + +static void curses_cleanup(void *opaque) +{ + endwin(); +} + +static void curses_atexit(void) +{ + curses_cleanup(NULL); +} + +static void curses_setup(void) +{ + int i, colour_default[8] = { + COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN, + COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE, + }; + + /* input as raw as possible, let everything be interpreted + * by the guest system */ + initscr(); noecho(); intrflush(stdscr, FALSE); + nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE); + start_color(); raw(); scrollok(stdscr, FALSE); + + for (i = 0; i < 64; i ++) + init_pair(i, colour_default[i & 7], colour_default[i >> 3]); +} + +static void curses_keyboard_setup(void) +{ + int i, keycode, keysym; + +#if defined(__APPLE__) + /* always use generic keymaps */ + if (!keyboard_layout) + keyboard_layout = "en-us"; +#endif + if(keyboard_layout) { + kbd_layout = init_keyboard_layout(keyboard_layout); + if (!kbd_layout) + exit(1); + } + + for (i = 0; i < CURSES_KEYS; i ++) + keycode2keysym[i] = -1; + + for (i = 0; i < CURSES_KEYS; i ++) { + if (curses2keycode[i] == -1) + continue; + + keycode = curses2keycode[i] & KEY_MASK; + if (keycode2keysym[keycode] >= 0) + continue; + + for (keysym = 0; keysym < CURSES_KEYS; keysym ++) + if (curses2keycode[keysym] == keycode) { + keycode2keysym[keycode] = keysym; + break; + } + + if (keysym >= CURSES_KEYS) + keycode2keysym[keycode] = i; + } +} + +void curses_display_init(DisplayState *ds, int full_screen) +{ +#ifndef _WIN32 + if (!isatty(1)) { + fprintf(stderr, "We need a terminal output\n"); + exit(1); + } +#endif + + curses_setup(); + curses_keyboard_setup(); + atexit(curses_atexit); + +#ifndef _WIN32 + signal(SIGINT, SIG_DFL); + signal(SIGQUIT, SIG_DFL); +#ifdef SIGWINCH + /* some curses implementations provide a handler, but we + * want to be sure this is handled regardless of the library */ + signal(SIGWINCH, curses_winch_handler); +#endif +#endif + + ds->data = (void *) screen; + ds->linesize = 0; + ds->depth = 0; + ds->width = 640; + ds->height = 400; + ds->dpy_update = curses_update; + ds->dpy_resize = curses_resize; + ds->dpy_refresh = curses_refresh; + ds->dpy_text_cursor = curses_cursor_position; + + invalidate = 1; + + /* Standard VGA initial text mode dimensions */ + curses_resize(ds, 80, 25); +} |