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-rw-r--r--ui/curses.c365
1 files changed, 365 insertions, 0 deletions
diff --git a/ui/curses.c b/ui/curses.c
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+/*
+ * 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 <curses.h>
+
+#ifndef _WIN32
+#include <signal.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#endif
+
+#ifdef __OpenBSD__
+#define resize_term resizeterm
+#endif
+
+#include "qemu-common.h"
+#include "console.h"
+#include "sysemu.h"
+
+#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_fixedsize_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)
+{
+ if (ds_get_width(ds) == gwidth && ds_get_height(ds) == gheight)
+ return;
+
+ gwidth = ds_get_width(ds);
+ gheight = ds_get_height(ds);
+
+ curses_calc_pad();
+ ds->surface->width = width * FONT_WIDTH;
+ ds->surface->height = height * FONT_HEIGHT;
+}
+
+#ifndef _WIN32
+#if defined(SIGWINCH) && defined(KEY_RESIZE)
+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"
+
+static kbd_layout_t *kbd_layout = NULL;
+
+static void curses_refresh(DisplayState *ds)
+{
+ int chr, nextchr, keysym, keycode, keycode_alt;
+
+ if (invalidate) {
+ clear();
+ refresh();
+ curses_calc_pad();
+ ds->surface->width = FONT_WIDTH * width;
+ ds->surface->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;
+
+#ifdef KEY_RESIZE
+ /* 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->surface->width = FONT_WIDTH * width;
+ ds->surface->height = FONT_HEIGHT * height;
+ continue;
+ }
+#endif
+
+ keycode = curses2keycode[chr];
+ keycode_alt = 0;
+
+ /* alt key */
+ if (keycode == 1) {
+ nextchr = getch();
+
+ if (nextchr != ERR) {
+ chr = nextchr;
+ keycode_alt = ALT;
+ keycode = curses2keycode[nextchr];
+ nextchr = ERR;
+
+ if (keycode != -1) {
+ 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) {
+ keysym = -1;
+ if (chr < CURSES_KEYS)
+ keysym = curses2keysym[chr];
+
+ if (keysym == -1) {
+ if (chr < ' ')
+ keysym = (chr + '@' - 'A' + 'a') | KEYSYM_CNTRL;
+ else
+ keysym = chr;
+ }
+
+ keycode = keysym2scancode(kbd_layout, keysym & KEYSYM_MASK);
+ if (keycode == 0)
+ continue;
+
+ keycode |= (keysym & ~KEYSYM_MASK) >> 16;
+ keycode |= keycode_alt;
+ }
+
+ if (keycode == -1)
+ continue;
+
+ 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 & ALTGR) {
+ kbd_put_keycode(SCANCODE_EMUL0);
+ 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 & ALTGR) {
+ kbd_put_keycode(SCANCODE_EMUL0);
+ kbd_put_keycode(ALT_CODE | 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 = curses2qemu[chr];
+ if (keysym == -1)
+ keysym = chr;
+
+ kbd_put_keysym(keysym);
+ }
+ }
+}
+
+static void curses_atexit(void)
+{
+ endwin();
+}
+
+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)
+{
+#if defined(__APPLE__)
+ /* always use generic keymaps */
+ if (!keyboard_layout)
+ keyboard_layout = "en-us";
+#endif
+ if(keyboard_layout) {
+ kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
+ if (!kbd_layout)
+ exit(1);
+ }
+}
+
+void curses_display_init(DisplayState *ds, int full_screen)
+{
+ DisplayChangeListener *dcl;
+#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
+#if defined(SIGWINCH) && defined(KEY_RESIZE)
+ /* 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
+
+ dcl = (DisplayChangeListener *) qemu_mallocz(sizeof(DisplayChangeListener));
+ dcl->dpy_update = curses_update;
+ dcl->dpy_resize = curses_resize;
+ dcl->dpy_refresh = curses_refresh;
+ dcl->dpy_text_cursor = curses_cursor_position;
+ register_displaychangelistener(ds, dcl);
+ qemu_free_displaysurface(ds);
+ ds->surface = qemu_create_displaysurface_from(640, 400, 0, 0, (uint8_t*) screen);
+
+ invalidate = 1;
+}
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