Add an ncurses UI.

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3976 c046a42c-6fe2-441c-8c8c-71466251a162

1 files changed, 370 insertions, 0 deletions

diff --git a/curses.c b/curses.c
new file mode 100644
index 000000000..d13a7d742
--- /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);
+}