qemu/curses.c
balrog c21bbcfa3f Reintroduce TEXT_CONSOLE_FIXED_SIZE and TEXT_CONSOLE for resizable vc's.
This partially reverts r4812 to fix an issue highlighted by Ryan Harper
with all vc's being fixed size which prevented backends with resizable
window (curses) from displaying okay.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5309 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-24 03:32:33 +00:00

375 lines
9.5 KiB
C

/*
* 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
#ifdef __OpenBSD__
#define resize_term resizeterm
#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_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, int w, int h)
{
if (w == gwidth && h == gheight)
return;
gwidth = w;
gheight = h;
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(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;
#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->width = FONT_WIDTH * width;
ds->height = FONT_HEIGHT * height;
continue;
}
#endif
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
#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
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);
}