mirror of
https://gitlab.com/qemu-project/qemu
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c21bbcfa3f
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
374 lines
9.5 KiB
C
374 lines
9.5 KiB
C
/*
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* QEMU curses/ncurses display driver
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*
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* Copyright (c) 2005 Andrzej Zaborowski <balrog@zabor.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h"
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#include "console.h"
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#include "sysemu.h"
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#include <curses.h>
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#ifndef _WIN32
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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#endif
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#ifdef __OpenBSD__
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#define resize_term resizeterm
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#endif
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#define FONT_HEIGHT 16
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#define FONT_WIDTH 8
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static console_ch_t screen[160 * 100];
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static WINDOW *screenpad = NULL;
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static int width, height, gwidth, gheight, invalidate;
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static int px, py, sminx, sminy, smaxx, smaxy;
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static void curses_update(DisplayState *ds, int x, int y, int w, int h)
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{
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chtype *line;
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line = ((chtype *) screen) + y * width;
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for (h += y; y < h; y ++, line += width)
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mvwaddchnstr(screenpad, y, 0, line, width);
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pnoutrefresh(screenpad, py, px, sminy, sminx, smaxy - 1, smaxx - 1);
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refresh();
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}
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static void curses_calc_pad(void)
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{
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if (is_fixedsize_console()) {
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width = gwidth;
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height = gheight;
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} else {
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width = COLS;
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height = LINES;
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}
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if (screenpad)
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delwin(screenpad);
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clear();
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refresh();
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screenpad = newpad(height, width);
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if (width > COLS) {
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px = (width - COLS) / 2;
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sminx = 0;
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smaxx = COLS;
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} else {
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px = 0;
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sminx = (COLS - width) / 2;
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smaxx = sminx + width;
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}
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if (height > LINES) {
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py = (height - LINES) / 2;
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sminy = 0;
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smaxy = LINES;
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} else {
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py = 0;
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sminy = (LINES - height) / 2;
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smaxy = sminy + height;
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}
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}
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static void curses_resize(DisplayState *ds, int w, int h)
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{
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if (w == gwidth && h == gheight)
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return;
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gwidth = w;
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gheight = h;
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curses_calc_pad();
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}
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#ifndef _WIN32
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#if defined(SIGWINCH) && defined(KEY_RESIZE)
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static void curses_winch_handler(int signum)
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{
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struct winsize {
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unsigned short ws_row;
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unsigned short ws_col;
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unsigned short ws_xpixel; /* unused */
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unsigned short ws_ypixel; /* unused */
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} ws;
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/* terminal size changed */
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if (ioctl(1, TIOCGWINSZ, &ws) == -1)
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return;
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resize_term(ws.ws_row, ws.ws_col);
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curses_calc_pad();
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invalidate = 1;
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/* some systems require this */
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signal(SIGWINCH, curses_winch_handler);
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}
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#endif
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#endif
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static void curses_cursor_position(DisplayState *ds, int x, int y)
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{
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if (x >= 0) {
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x = sminx + x - px;
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y = sminy + y - py;
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if (x >= 0 && y >= 0 && x < COLS && y < LINES) {
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move(y, x);
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curs_set(1);
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/* it seems that curs_set(1) must always be called before
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* curs_set(2) for the latter to have effect */
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if (!is_graphic_console())
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curs_set(2);
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return;
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}
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}
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curs_set(0);
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}
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/* generic keyboard conversion */
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#include "curses_keys.h"
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#include "keymaps.c"
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static kbd_layout_t *kbd_layout = 0;
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static int keycode2keysym[CURSES_KEYS];
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static void curses_refresh(DisplayState *ds)
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{
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int chr, nextchr, keysym, keycode;
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if (invalidate) {
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clear();
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refresh();
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curses_calc_pad();
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ds->width = FONT_WIDTH * width;
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ds->height = FONT_HEIGHT * height;
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vga_hw_invalidate();
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invalidate = 0;
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}
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vga_hw_text_update(screen);
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nextchr = ERR;
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while (1) {
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/* while there are any pending key strokes to process */
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if (nextchr == ERR)
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chr = getch();
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else {
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chr = nextchr;
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nextchr = ERR;
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}
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if (chr == ERR)
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break;
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#ifdef KEY_RESIZE
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/* this shouldn't occur when we use a custom SIGWINCH handler */
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if (chr == KEY_RESIZE) {
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clear();
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refresh();
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curses_calc_pad();
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curses_update(ds, 0, 0, width, height);
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ds->width = FONT_WIDTH * width;
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ds->height = FONT_HEIGHT * height;
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continue;
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}
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#endif
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keycode = curses2keycode[chr];
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if (keycode == -1)
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continue;
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/* alt key */
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if (keycode == 1) {
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nextchr = getch();
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if (nextchr != ERR) {
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keycode = curses2keycode[nextchr];
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nextchr = ERR;
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if (keycode == -1)
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continue;
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keycode |= ALT;
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/* process keys reserved for qemu */
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if (keycode >= QEMU_KEY_CONSOLE0 &&
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keycode < QEMU_KEY_CONSOLE0 + 9) {
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erase();
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wnoutrefresh(stdscr);
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console_select(keycode - QEMU_KEY_CONSOLE0);
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invalidate = 1;
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continue;
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}
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}
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}
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if (kbd_layout && !(keycode & GREY)) {
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keysym = keycode2keysym[keycode & KEY_MASK];
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if (keysym == -1)
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keysym = chr;
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keycode &= ~KEY_MASK;
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keycode |= keysym2scancode(kbd_layout, keysym);
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}
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if (is_graphic_console()) {
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/* since terminals don't know about key press and release
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* events, we need to emit both for each key received */
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if (keycode & SHIFT)
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kbd_put_keycode(SHIFT_CODE);
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if (keycode & CNTRL)
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kbd_put_keycode(CNTRL_CODE);
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if (keycode & ALT)
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kbd_put_keycode(ALT_CODE);
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if (keycode & GREY)
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kbd_put_keycode(GREY_CODE);
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kbd_put_keycode(keycode & KEY_MASK);
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if (keycode & GREY)
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kbd_put_keycode(GREY_CODE);
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kbd_put_keycode((keycode & KEY_MASK) | KEY_RELEASE);
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if (keycode & ALT)
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kbd_put_keycode(ALT_CODE | KEY_RELEASE);
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if (keycode & CNTRL)
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kbd_put_keycode(CNTRL_CODE | KEY_RELEASE);
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if (keycode & SHIFT)
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kbd_put_keycode(SHIFT_CODE | KEY_RELEASE);
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} else {
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keysym = curses2keysym[chr];
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if (keysym == -1)
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keysym = chr;
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kbd_put_keysym(keysym);
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}
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}
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}
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static void curses_cleanup(void *opaque)
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{
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endwin();
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}
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static void curses_atexit(void)
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{
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curses_cleanup(NULL);
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}
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static void curses_setup(void)
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{
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int i, colour_default[8] = {
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COLOR_BLACK, COLOR_BLUE, COLOR_GREEN, COLOR_CYAN,
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COLOR_RED, COLOR_MAGENTA, COLOR_YELLOW, COLOR_WHITE,
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};
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/* input as raw as possible, let everything be interpreted
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* by the guest system */
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initscr(); noecho(); intrflush(stdscr, FALSE);
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nodelay(stdscr, TRUE); nonl(); keypad(stdscr, TRUE);
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start_color(); raw(); scrollok(stdscr, FALSE);
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for (i = 0; i < 64; i ++)
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init_pair(i, colour_default[i & 7], colour_default[i >> 3]);
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}
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static void curses_keyboard_setup(void)
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{
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int i, keycode, keysym;
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#if defined(__APPLE__)
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/* always use generic keymaps */
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if (!keyboard_layout)
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keyboard_layout = "en-us";
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#endif
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if(keyboard_layout) {
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kbd_layout = init_keyboard_layout(keyboard_layout);
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if (!kbd_layout)
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exit(1);
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}
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for (i = 0; i < CURSES_KEYS; i ++)
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keycode2keysym[i] = -1;
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for (i = 0; i < CURSES_KEYS; i ++) {
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if (curses2keycode[i] == -1)
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continue;
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keycode = curses2keycode[i] & KEY_MASK;
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if (keycode2keysym[keycode] >= 0)
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continue;
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for (keysym = 0; keysym < CURSES_KEYS; keysym ++)
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if (curses2keycode[keysym] == keycode) {
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keycode2keysym[keycode] = keysym;
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break;
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}
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if (keysym >= CURSES_KEYS)
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keycode2keysym[keycode] = i;
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}
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}
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void curses_display_init(DisplayState *ds, int full_screen)
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{
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#ifndef _WIN32
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if (!isatty(1)) {
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fprintf(stderr, "We need a terminal output\n");
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exit(1);
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}
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#endif
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curses_setup();
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curses_keyboard_setup();
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atexit(curses_atexit);
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#ifndef _WIN32
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#if defined(SIGWINCH) && defined(KEY_RESIZE)
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/* some curses implementations provide a handler, but we
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* want to be sure this is handled regardless of the library */
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signal(SIGWINCH, curses_winch_handler);
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#endif
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#endif
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ds->data = (void *) screen;
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ds->linesize = 0;
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ds->depth = 0;
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ds->width = 640;
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ds->height = 400;
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ds->dpy_update = curses_update;
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ds->dpy_resize = curses_resize;
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ds->dpy_refresh = curses_refresh;
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ds->dpy_text_cursor = curses_cursor_position;
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invalidate = 1;
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/* Standard VGA initial text mode dimensions */
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curses_resize(ds, 80, 25);
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}
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