qemu-e2k/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 <sys/ioctl.h>
#include <termios.h>
#endif
#include "qemu-common.h"
#include "ui/console.h"
#include "sysemu/sysemu.h"
#define FONT_HEIGHT 16
#define FONT_WIDTH 8
static DisplayChangeListener *dcl;
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(DisplayChangeListener *dcl,
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 (qemu_console_is_fixedsize(NULL)) {
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(DisplayChangeListener *dcl,
int width, int height)
{
if (width == gwidth && height == gheight) {
return;
}
gwidth = width;
gheight = height;
curses_calc_pad();
}
#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(DisplayChangeListener *dcl,
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 (!qemu_console_is_graphic(NULL)) {
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(DisplayChangeListener *dcl)
{
int chr, nextchr, keysym, keycode, keycode_alt;
if (invalidate) {
clear();
refresh();
curses_calc_pad();
graphic_hw_invalidate(NULL);
invalidate = 0;
}
graphic_hw_text_update(NULL, 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(dcl, 0, 0, width, 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 + '@';
if (keysym >= 'A' && keysym <= 'Z')
keysym += 'a' - 'A';
keysym |= 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 (qemu_console_is_graphic(NULL)) {
/* 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);
}
}
static const DisplayChangeListenerOps dcl_ops = {
.dpy_name = "curses",
.dpy_text_update = curses_update,
.dpy_text_resize = curses_resize,
.dpy_refresh = curses_refresh,
.dpy_text_cursor = curses_cursor_position,
};
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
#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 *) g_malloc0(sizeof(DisplayChangeListener));
dcl->ops = &dcl_ops;
DisplayState interface change (Stefano Stabellini) This patch changes the DisplayState interface adding support for multiple frontends at the same time (sdl and vnc) and implements most of the benefit of the shared_buf patch without the added complexity. Currently DisplayState is managed by sdl (or vnc) and sdl (or vnc) is also responsible for allocating the data and setting the depth. Vga.c (or another backend) will do any necessary conversion. The idea is to change it so that is vga.c (or another backend) together with console.c that fully manage the DisplayState interface allocating data and setting the depth (either 16 or 32 bit, if the guest uses a different resolution or is in text mode, vga.c (or another backend) is in charge of doing the conversion seamlessly). The other idea is that DisplayState supports *multiple* frontends like sdl and vnc; each of them can register some callbacks to be called when a display event occurs. The interesting changes are: - the new structures and related functions in console.h and console.c in particular the following functions are very helpful to manage a DisplaySurface: qemu_create_displaysurface qemu_resize_displaysurface qemu_create_displaysurface_from qemu_free_displaysurface - console_select and qemu_console_resize in console.c this two functions manage multiple consoles on a single host display - moving code around in hw/vga.c as for the shared_buf patch this is necessary to be able to handle a dynamic DisplaySurface bpp - changes to vga_draw_graphic in hw/vga.c this is the place where the DisplaySurface buffer is shared with the videoram, when possible; Compared to the last version the only changes are: - do not remove support to dpy_copy in cirrus_vga - change the name of the displaysurface handling functions Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6336 c046a42c-6fe2-441c-8c8c-71466251a162
2009-01-15 23:14:11 +01:00
register_displaychangelistener(ds, dcl);
invalidate = 1;
}