/
console.c
2772 lines (2504 loc) · 71.9 KB
/
console.c
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/*
* QEMU graphical console
*
* Copyright (c) 2004 Fabrice Bellard
*
* 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 "console.h"
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <ctype.h>
#include <locale.h>
#include <wchar.h>
#include "debug.h"
#include "consmap.h"
#define DEFAULT_BACKSCROLL (512)
#define MAX_CONSOLES 12
#define QEMU_RGBA(r, g, b, a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
#define QEMU_RGB(r, g, b) QEMU_RGBA(r, g, b, 0xff)
#define min(a,b) ((a) < (b) ? (a) : (b))
#define max(a,b) ((a) > (b) ? (a) : (b))
/* fonts */
#define G0 0
#define G1 1
int insertmode = 0;
typedef struct TextAttributes {
uint8_t fgcol:4;
uint8_t bgcol:4;
uint8_t bold:1;
uint8_t uline:1;
uint8_t blink:1;
uint8_t invers:1;
uint8_t unvisible:1;
uint8_t used:1;
uint8_t utf:1;
uint8_t font:1; /* 0 or 1 */
uint8_t codec[2]; /* 0-3 translation table per font */
} TextAttributes;
typedef struct CellAttributes {
uint8_t highlit:1;
uint8_t wrapped:1;
uint8_t columns:3;
uint8_t spanned:1;
} CellAttributes;
typedef struct TextCell {
uint8_t ch;
TextAttributes t_attrib;
CellAttributes c_attrib;
} TextCell;
#define MAX_ESC_PARAMS 16
#define MAX_PALETTE_PARAMS 7
enum TTYState {
TTY_STATE_NORM,
TTY_STATE_ESC,
TTY_STATE_PERCENT,
TTY_STATE_G0,
TTY_STATE_G1,
TTY_STATE_CSI,
TTY_STATE_NONSTD,
TTY_STATE_PALETTE,
/*
XXX to be done
TTY_STATE_HASH,
TTY_STATE_SQUARE,
TTY_STATE_GETPARS,
TTY_STATE_GOTPARS,
*/
TTY_STATE_MAX = TTY_STATE_PALETTE
};
struct stream_chunk
{
int offset;
int len;
struct stream_chunk *next;
char data[];
};
struct chunked_stream {
int fd;
void *opaque;
struct stream_chunk *chunk;
struct stream_chunk **chunk_tail;
};
static void
write_or_chunk(struct chunked_stream *s, uint8_t *buf, int len)
{
int done;
struct stream_chunk *chunk;
while (s->chunk) {
chunk = s->chunk;
done = write(s->fd, chunk->data + chunk->offset,
chunk->len - chunk->offset);
if (done < 0) return; /* XXX error */
chunk->offset += done;
if (chunk->offset == chunk->len) {
s->chunk = chunk->next;
free(chunk);
if (s->chunk == NULL)
s->chunk_tail = &s->chunk;
} else
break;
}
done = 0;
if (s->chunk == NULL) {
done = write(s->fd, buf, len);
if (done < 0) return; /* XXX error */
if (done == len)
return;
}
chunk = malloc(sizeof(struct stream_chunk) + len - done);
if (chunk == NULL)
return; /* XXX raise error */
chunk->next = NULL;
chunk->offset = 0;
chunk->len = len - done;
memcpy(chunk->data, buf + done, len - done);
*s->chunk_tail = chunk;
s->chunk_tail = &chunk->next;
}
struct selection{
int startx, starty;
int endx, endy;
};
/* ??? This is mis-named.
It is used for both text and graphical consoles. */
struct TextConsole {
int text_console; /* true if text console */
DisplayState *ds;
/* Graphic console state. */
/* width and height in pixels of "frame"/display */
int g_width, g_height;
/* width and height in char cells of "frame"/display*/
int width, height;
/* height, including history currently used,
This should go beyond total_height-heigth */
int backscroll;
/* maximum possible height (backscroll)*/
int total_height;
/* current cursor position in screen coordinate
* always 0 <= x < width and 0 <= y <= height
*/
int x, y;
/* saved cursor position */
int saved_x, saved_y;
/* boolean, selfexplanatory */
char cursor_visible;
/* screen's 1st line (the top line)*/
int y_base;
/* this is offset that is substracted from y_base
and points to currently displayed screen */
int y_scroll;
/* scroll region in screen coordinate */
int sr_top, sr_bottom;
/* self explanatory */
char autowrap;
char wrapped;
int insert_mode;
int cursorkey_mode;
/* display control chars */
char display_ctrl;
/* toggle high bit */
char toggle_meta;
/* orgin mode, not used currently - only set */
char origin_mode;
/* default text attributes */
TextAttributes t_attrib_default;
/* currently active text attributes */
TextAttributes t_attrib;
/* currently saved text attributes */
TextAttributes saved_t_attrib;
/* the actual content */
TextCell *cells;
/* default text attributes */
CellAttributes c_attrib_default;
enum TTYState state;
int esc_params[MAX_ESC_PARAMS];
int nb_esc_params;
int has_esc_param;
int has_qmark;
struct chunked_stream input_stream;
/* first one for current selection, second one for old */
struct selection selections[2];
int selecting;
/* mouse position */
int mouse_x, mouse_y;
/* unicode bits (state of unicode input) */
int unicodeIndex;
char unicodeData[7];
int unicodeLength;
uint8_t palette_params[MAX_PALETTE_PARAMS];
uint8_t nb_palette_params;
#if 0
/* kbd read handler */
IOCanRWHandler *fd_can_read;
IOReadHandler *fd_read;
void *fd_opaque;
/* fifo for key pressed */
QEMUFIFO out_fifo;
uint8_t out_fifo_buf[16];
QEMUTimer *kbd_timer;
#endif
};
typedef struct TextConsole TextConsole;
static TextConsole *active_console;
static TextConsole *consoles[MAX_CONSOLES];
static int nb_consoles = 0;
static void set_color_table(DisplayState *ds);
#define clip_y(s, v) { \
if ((s)->v >= (s)->height) \
(s)->v = (s)->height - 1; \
if ((s)->v < 0) \
(s)->v = 0; \
}
#define clip_x(s, v) { \
if ((s)->v >= (s)->width) \
(s)->v = (s)->width - 1; \
if ((s)->v < 0) \
(s)->v = 0; \
}
#define clip_xy(s,x,y) {clip_x(s,x);clip_y(s,y);}
/* convert a RGBA color to a color index usable in graphic primitives */
static unsigned int vga_get_color(DisplayState *ds, unsigned int rgba)
{
unsigned int r, g, b, color;
switch(ds->depth) {
case 8:
r = (rgba >> 16) & 0xff;
g = (rgba >> 8) & 0xff;
b = (rgba) & 0xff;
color = ((r >> 5) << 5 | (g >> 5) << 2 | (b >> 6));
break;
case 15:
r = (rgba >> 16) & 0xff;
g = (rgba >> 8) & 0xff;
b = (rgba) & 0xff;
color = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3);
break;
case 16:
r = (rgba >> 16) & 0xff;
g = (rgba >> 8) & 0xff;
b = (rgba) & 0xff;
color = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
break;
case 32:
default:
color = rgba;
break;
}
return color;
}
static void vga_fill_rect (DisplayState *ds,
int posx, int posy, int width, int height, uint32_t color)
{
uint8_t *d, *d1;
int x, y, bpp;
bpp = (ds->depth + 7) >> 3;
d1 = ds->data +
ds->linesize * posy + bpp * posx;
for (y = 0; y < height; y++) {
d = d1;
switch(bpp) {
case 1:
memset(d,color,width);
d+=width;
break;
case 2:
for (x = 0; x < width; x++) {
*((uint16_t *)d) = color;
d += bpp;
}
break;
case 4:
for (x = 0; x < width; x++) {
*((uint32_t *)d) = color;
d += bpp;
}
break;
}
d1 += ds->linesize;
}
}
/* copy from (xs, ys) to (xd, yd) a rectangle of size (w, h) */
static void vga_bitblt(DisplayState *ds, int xs, int ys, int xd, int yd, int w, int h)
{
const uint8_t *s;
uint8_t *d;
int wb, y, bpp;
bpp = (ds->depth + 7) >> 3;
wb = w * bpp;
if (yd <= ys) {
s = ds->data +
ds->linesize * ys + bpp * xs;
d = ds->data +
ds->linesize * yd + bpp * xd;
for (y = 0; y < h; y++) {
memmove(d, s, wb);
d += ds->linesize;
s += ds->linesize;
}
} else {
s = ds->data +
ds->linesize * (ys + h - 1) + bpp * xs;
d = ds->data +
ds->linesize * (yd + h - 1) + bpp * xd;
for (y = 0; y < h; y++) {
memmove(d, s, wb);
d -= ds->linesize;
s -= ds->linesize;
}
}
}
/***********************************************************/
/* basic char display */
#define FONT_HEIGHT 16
#define FONT_WIDTH 8
#include "vgafont.h"
#include "graphfont.h"
#define cbswap_32(__x) \
((uint32_t)( \
(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \
(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \
(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \
(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) ))
#ifdef WORDS_BIGENDIAN
#define PAT(x) x
#else
#define PAT(x) cbswap_32(x)
#endif
static const uint32_t dmask16[16] = {
PAT(0x00000000),
PAT(0x000000ff),
PAT(0x0000ff00),
PAT(0x0000ffff),
PAT(0x00ff0000),
PAT(0x00ff00ff),
PAT(0x00ffff00),
PAT(0x00ffffff),
PAT(0xff000000),
PAT(0xff0000ff),
PAT(0xff00ff00),
PAT(0xff00ffff),
PAT(0xffff0000),
PAT(0xffff00ff),
PAT(0xffffff00),
PAT(0xffffffff),
};
static const uint32_t dmask4[4] = {
PAT(0x00000000),
PAT(0x0000ffff),
PAT(0xffff0000),
PAT(0xffffffff),
};
static uint32_t color_table[2][8];
enum color_names {
COLOR_BLACK = 0,
COLOR_RED = 1,
COLOR_GREEN = 2,
COLOR_BROWN = 3,
COLOR_BLUE = 4,
COLOR_MAGENTA = 5,
COLOR_CYAN = 6,
COLOR_WHITE = 7
};
static const uint32_t color_table_rgb[2][8] = {
{ /* dark */
QEMU_RGB(0x00, 0x00, 0x00), /* black */
QEMU_RGB(0xc0, 0x00, 0x00), /* red */
QEMU_RGB(0x00, 0xc0, 0x00), /* green */
QEMU_RGB(0xb2, 0x68, 0x18), /* brown */
QEMU_RGB(0x00, 0x00, 0xc0), /* blue */
QEMU_RGB(0xc0, 0x00, 0xc0), /* magenta */
QEMU_RGB(0x00, 0xc0, 0xc0), /* cyan */
QEMU_RGB(0xc0, 0xc0, 0xc0), /* white */
},
{ /* bright */
QEMU_RGB(0x00, 0x00, 0x00), /* black */
QEMU_RGB(0xff, 0x00, 0x00), /* red */
QEMU_RGB(0x00, 0xff, 0x00), /* green */
QEMU_RGB(0xb2, 0x68, 0x18), /* brown */
QEMU_RGB(0x00, 0x00, 0xff), /* blue */
QEMU_RGB(0xff, 0x00, 0xff), /* magenta */
QEMU_RGB(0x00, 0xff, 0xff), /* cyan */
QEMU_RGB(0xff, 0xff, 0xff), /* white */
}
};
#define UTFVAL(B) (consmap[curf][B]&0xffff)
/* simplest binary search */
static int get_glyphcode(TextConsole *s, int chart)
{
int low = 0, high = 255, mid;
int h=0, o='?';
int curf = s->t_attrib.codec[s->t_attrib.font];
/* there is no point in transcribing latin1 char */
if (curf == MAPLAT1) {
if (chart <= 0x7f)
return chart;
else
curf = MAPGRAF;
}
if (chart > UTFVAL(high) || chart < UTFVAL(low))
return o;
while(low <= high) {
h++;
mid = (low + high) / 2;
if (UTFVAL(mid) > chart)
high = mid - 1;
else
if (UTFVAL(mid) < chart)
low = mid + 1;
else {
o = (consmap[curf][mid]>>16)&0xff;
break;
}
}
dprintf("utf8: %x to: %x, lookups: %d\n", chart, o, h);
return o;
}
static inline unsigned int col_expand(DisplayState *ds, unsigned int col)
{
switch(ds->depth) {
case 8:
col |= col << 8;
col |= col << 16;
break;
case 15:
case 16:
col |= col << 16;
break;
default:
break;
}
return col;
}
static void console_print_text_attributes(TextAttributes *t_attrib, char ch)
{
if (!do_log)
return;
if (t_attrib->bold) {
dprintf("b");
} else {
dprintf(" ");
}
if (t_attrib->uline) {
dprintf("u");
} else {
dprintf(" ");
}
if (t_attrib->blink) {
dprintf("l");
} else {
dprintf(" ");
}
if (t_attrib->invers) {
dprintf("i");
} else {
dprintf(" ");
}
if (t_attrib->unvisible) {
dprintf("n");
} else {
dprintf(" ");
}
dprintf(" fg: %d bg: %d ch:'%2X' '%c'\n", t_attrib->fgcol, t_attrib->bgcol, ch, ch);
}
/* does a framebuffer scrolling by N lines */
static void vga_scroll(TextConsole *s, int n)
{
int h;
if (n>0) { // up
if (n > s->height) n = s->height;
n *= FONT_HEIGHT;
h = s->g_height - n;
vga_bitblt(s->ds, 0, n, 0, 0, s->g_width, h);
vga_fill_rect(s->ds, 0, h, s->g_width, n, s->t_attrib.bgcol);
}
else { // down
n = -n;
if (n > s->height) n = s->height;
n *= FONT_HEIGHT;
h = s->g_height - n;
vga_bitblt(s->ds, 0, 0, 0, n, s->g_width, h);
vga_fill_rect(s->ds, 0, 0, s->g_width, n, s->t_attrib.bgcol);
}
}
static void vga_putcharxy(TextConsole *s, int x, int y, int ch,
TextAttributes *t_attrib, CellAttributes *c_attrib)
{
uint8_t *d;
const uint8_t *font_ptr;
unsigned int font_data, linesize, xorcol, bpp;
int i;
unsigned int fgcol, bgcol;
DisplayState *ds = s->ds;
// dprintf("x: %2i y: %2i", x, y);
console_print_text_attributes(t_attrib, ch);
// dprintf("font:%d\n", t_attrib->font);
if (t_attrib->invers ^ c_attrib->highlit ^
((s->cursor_visible && x == s->x && y == s->y && !s->y_scroll) ))
{
bgcol = color_table[0][t_attrib->fgcol];
fgcol = color_table[t_attrib->bold][t_attrib->bgcol];
} else {
fgcol = color_table[t_attrib->bold][t_attrib->fgcol];
bgcol = color_table[0][t_attrib->bgcol];
}
bpp = (ds->depth + 7) >> 3;
d = ds->data +
ds->linesize * y * FONT_HEIGHT + bpp * x * FONT_WIDTH;
linesize = ds->linesize;
// dprintf("vga_putcharxy: %d font:%d\n", ch, t_attrib->font );
switch( t_attrib->font ) {
case G0:
font_ptr = vgafont16 + FONT_HEIGHT * ch;
break;
case G1:
default:
font_ptr = graphfont16 + FONT_HEIGHT * ch;
break;
}
xorcol = bgcol ^ fgcol;
switch(ds->depth) {
case 8:
for(i = 0; i < FONT_HEIGHT; i++) {
font_data = *font_ptr++;
if (t_attrib->uline
&& ((i == FONT_HEIGHT - 2) || (i == FONT_HEIGHT - 3))) {
font_data = 0xFFFF;
}
((uint32_t *)d)[0] = (dmask16[(font_data >> 4)] & xorcol) ^ bgcol;
((uint32_t *)d)[1] = (dmask16[(font_data >> 0) & 0xf] & xorcol) ^ bgcol;
d += linesize;
}
break;
case 16:
case 15:
for(i = 0; i < FONT_HEIGHT; i++) {
font_data = *font_ptr++;
if (t_attrib->uline
&& ((i == FONT_HEIGHT - 2) || (i == FONT_HEIGHT - 3))) {
font_data = 0xFFFF;
}
((uint32_t *)d)[0] = (dmask4[(font_data >> 6)] & xorcol) ^ bgcol;
((uint32_t *)d)[1] = (dmask4[(font_data >> 4) & 3] & xorcol) ^ bgcol;
((uint32_t *)d)[2] = (dmask4[(font_data >> 2) & 3] & xorcol) ^ bgcol;
((uint32_t *)d)[3] = (dmask4[(font_data >> 0) & 3] & xorcol) ^ bgcol;
d += linesize;
}
break;
case 32:
for(i = 0; i < FONT_HEIGHT; i++) {
font_data = *font_ptr++;
if (t_attrib->uline && ((i == FONT_HEIGHT - 2) || (i == FONT_HEIGHT - 3))) {
font_data = 0xFFFF;
}
((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
d += linesize;
}
break;
}
}
static void text_console_resize(TextConsole *s)
{
TextCell *cells, *c, *c1;
int w1, x, y, last_width;
dprintf("text console resize %p\n", s->cells);
last_width = s->width;
s->width = s->g_width / FONT_WIDTH;
s->height = s->g_height / FONT_HEIGHT;
s->sr_top = 0;
s->sr_bottom = s->height - 1;
w1 = last_width;
if (s->width < w1)
w1 = s->width;
cells = qemu_malloc(s->width * s->total_height * sizeof(TextCell));
memset(cells,0,s->width * s->total_height * sizeof(TextCell));
for(y = 0; y < s->total_height; y++) {
c = &cells[y * s->width];
if (w1 > 0) {
c1 = &s->cells[y * last_width];
for(x = 0; x < w1; x++) {
*c++ = *c1++;
}
}
for(x = w1; x < s->width; x++) {
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
c->c_attrib = s->c_attrib_default;
c++;
}
}
qemu_free(s->cells);
s->cells = cells;
}
/*
where virtual lines have to be used in
loop, this macro should be used instead of y++
*/
#define next_line(A,Y) ((Y+1)%s->total_height)
/* projection onto 'real' screen
warning, this can return negative y or over s->height */
static int virtual_to_screen(TextConsole *s, int y)
{
y -= s->y_base-s->y_scroll;
y %= s->total_height;
if (y<0)
y += s->total_height;
return y;
}
/*
this should be used whenever we want to access data from
TextCells that reflect currently displayed screen frame
*/
static int screen_to_virtual(TextConsole *s, int y)
{
y += s->y_base-s->y_scroll;
y %= s->total_height;
if (y<0)
y += s->total_height;
return y;
}
/*
paints character under X,Y - as visible on screen
also sends VNC update for the character
*/
static void update_xy(TextConsole *s, int x, int y)
{
TextCell *c;
if (y<0 || x<0 || x>=s->width || y>=s->height || s != active_console)
return;
c = &s->cells[screen_to_virtual(s,y) * s->width + x];
vga_putcharxy(s, x, y, c->ch,
&(c->t_attrib), &(c->c_attrib));
s->ds->dpy_update(s->ds, x * FONT_WIDTH, y * FONT_HEIGHT,
FONT_WIDTH, FONT_HEIGHT);
}
/*
update whole rectangle of characters, as visible on screen
since this relies on update_x,y() - it also sends out VNC update
*/
static void update_rect(TextConsole *s, int x, int y, int w, int h)
{
int i,j;
for(i=0;i<h;i++) {
if (i+y > s->height)
break;
for(j=0;j<w;j++) {
if (j+x > s->width) {
w=j;
break;
}
update_xy(s, x+j, y+i);
}
}
}
static void set_cursor(TextConsole *s, int x, int y)
{
s->y = y;
s->wrapped = 0;
s->x = x;
clip_xy(s, x, y);
}
static void console_show_cursor(TextConsole *s, int show)
{
s->cursor_visible = show;
if (s == active_console && s->x < s->width) {
update_xy(s, s->x, s->y);
}
}
/* calculate 'dinstance' (number of lines) between two given
lines on virtual console
*/
static int line_dist(TextConsole *s, int yf, int yt)
{
if (yf <= yt )
return yt-yf;
yt += s->total_height;
return yt-yf;
}
#define swap_coords(TY, FY, TX, FX) {int tmp; tmp = FX; FX = TX; TX = tmp; \
tmp = FY;FY = TY;TY = tmp;}
/* returns the selection as null terminated char
takes coordinates in virtual space already
*/
static char *
get_text(TextConsole *s, int from_x, int from_y, int to_x, int to_y)
{
TextCell *c;
char *buffer;
int bufidx = 0;
int sc_fy, sc_ty;
sc_fy = virtual_to_screen(s, from_y);
sc_ty = virtual_to_screen(s, to_y);
/* swap if necessary */
if ((sc_ty < sc_fy || (sc_ty == sc_fy && to_x < from_x)) && abs(sc_fy)-abs(sc_ty) < s->height) {
swap_coords(to_y, from_y, to_x, from_x);
sc_fy = sc_ty;
}
dprintf("get_text from %d/%d to %d/%d \n", from_y, from_x, to_y, to_x);
buffer = malloc((line_dist(s, from_y, to_y) + 1) * (s->width + 1));
if (buffer == NULL)
return NULL;
while(from_y != to_y || from_x != to_x) {
c = &s->cells[from_y*s->width + from_x];
if (c->t_attrib.used)
buffer[bufidx++] = c->ch;
from_x++;
if (from_x >= s->width) {
from_x = 0;
from_y = next_line(s, from_y);
if (!(c->t_attrib.used && c->c_attrib.wrapped))
buffer[bufidx++] = '\n';
}
}
buffer[bufidx] = 0;
return buffer;
}
/*
macros operating on selection structure
*/
#define zero_selection(A,B) {memset( &A->selections[B],0,sizeof(struct selection) );}
#define is_selection_zero(A,B) ((A->selections[B].startx | \
A->selections[B].starty | \
A->selections[B].endx | \
A->selections[B].endy ) == 0 )
/*
highlight the selected text visualy
this operates on 'virtual' coordinates
*/
static void
highlight(TextConsole *s, int from_x, int from_y, int to_x, int to_y, int highlight)
{
TextCell *c;
int sc_fy, sc_ty;
int x;
int last_c = 0;
if (from_y == to_y && to_x == from_x)
return;
sc_fy = virtual_to_screen(s, from_y);
sc_ty = virtual_to_screen(s, to_y);
/* swap if necessary */
if ((sc_ty < sc_fy || (sc_ty == sc_fy && to_x < from_x)) && abs(sc_fy)-abs(sc_ty) < s->height) {
swap_coords(to_y, from_y, to_x, from_x);
sc_fy = sc_ty;
}
dprintf("highlight from %d/%d to %d/%d - %d \n", from_y, from_x, to_y, to_x, highlight);
if (to_y != from_y) x = s->width - 1;
else x = to_x - 1;
while(x >= from_x) {
c = &s->cells[from_y * s->width + x];
if (c->c_attrib.highlit != highlight) {
if (c->t_attrib.used || from_y != to_y || last_c) {
c->c_attrib.highlit = highlight;
update_xy(s, x, sc_fy);
last_c = 1;
}
}
c--;
x--;
if (x < from_x && from_y != to_y) {
from_y = next_line(s, from_y);
if (from_y != to_y) x = s->width - 1;
else x = to_x - 1;
sc_fy = virtual_to_screen(s, from_y);
last_c = 0;
from_x = 0;
}
}
}
int
mouse_is_absolute(void *opaque)
{
return 1;
}
static void console_refresh(TextConsole *s)
{
TextCell *c;
int x, y;
if (s != active_console)
return;
vga_fill_rect(s->ds, 0, 0, s->g_width, s->g_height, s->t_attrib.bgcol);
for(y = 0; y < s->height; y++) {
c = &s->cells[screen_to_virtual(s,y) * s->width];
for(x = 0; x < s->width; x++) {
vga_putcharxy(s, x, y, c->ch, &(c->t_attrib), &(c->c_attrib));
c++;
}
}
s->ds->dpy_update(s->ds, 0, 0, s->ds->width, s->ds->height);
console_show_cursor(s, 1);
}
static void clear_line(TextConsole *s, int line, int from_x, int to_x)
{
TextCell *c;
int m_fy, i;
if (to_x > s->width)
to_x = s->width;
if (0 > from_x || from_x >= to_x)
return;
m_fy = screen_to_virtual(s, line);
c = &s->cells[(m_fy * s->width)+from_x];
for (i = from_x; i < to_x; i++) {
c->ch = ' ';
c->t_attrib = s->t_attrib_default;
c->t_attrib.fgcol = s->t_attrib.fgcol;
c->t_attrib.bgcol = s->t_attrib.bgcol;
c->c_attrib.wrapped = s->c_attrib_default.wrapped;
c->c_attrib.columns = 1;
c->c_attrib.spanned = 0;
c++;
}
update_rect(s, from_x, line, to_x - from_x, 1);
}
static void clear(TextConsole *s, int from_x, int start_y, int to_x, int height)
{
int i;
dprintf("clear(%d, %d, %d, %d)\n", from_x, start_y, to_x,
start_y + height);
for (i = 0; i < height; i++)
clear_line(s, start_y + i,
(i == 0) ? from_x : 0, (i == height - 1) ? to_x : s->width);
}
/* this just scrolls view */
static void console_scroll(TextConsole *s, int ydelta)
{
int y_scroll;
if (!s || !s->text_console)
return;
y_scroll = s->y_scroll - ydelta;
if (y_scroll > s->backscroll)
y_scroll = s->backscroll;
if (y_scroll < 0)
y_scroll = 0;
ydelta = s->y_scroll - y_scroll;
if (ydelta == 0)
return;
s->y_scroll = y_scroll;
if (abs(ydelta) < s->height) {
vga_scroll(s, ydelta);
if (ydelta>0)
update_rect(s, 0, s->height-ydelta, s->width, ydelta );
else