ref: b611e99113cdebe713475694c49bdf17b8f7ff6c
dir: /sys/src/9/omap/screen.c/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#define Image IMAGE
#include <draw.h>
#include <memdraw.h>
#include "screen.h"
enum {
/* display controller registers */
RDrev = 0x400,
RDsysconf = 0x410,
RDsysstat = 0x414,
RDirqstat = 0x418,
RDirqen = 0x41c,
RDcontrol = 0x440,
DClcdon = 1<<0,
DClcdgo = 1<<5,
DClcdbits = 3<<8,
DClcdbits24 = 3<<8,
RDconfig = 0x444,
RDdefcolor = 0x44c,
RDtranscolor = 0x454,
RDlinestat = 0x45c,
RDlineintr = 0x460,
RDtimeh = 0x464,
RDtimev = 0x468,
RDsize = 0x47c,
/* display controller graphics layer registers */
RDgfxba = 0x480,
RDgfxpos = 0x488,
RDgfxsize = 0x48c,
RDgfxattr = 0x4a0,
RDgfxrowinc = 0x4ac,
RDgfxpixelinc = 0x4b0,
};
enum {
Tab = 4,
Scroll = 8,
};
typedef struct Ctlr Ctlr;
struct Ctlr {
Lock;
u32int *io;
Memdata scrdata;
Memimage *scrimg;
Memsubfont *scrfont;
Rectangle win;
Point font;
Point pos;
};
static Ctlr ctlr = {
.io = (u32int*) PHYSDSS,
};
#define csr32r(c, r) ((c)->io[(r)/4])
#define csr32w(c, r, w) ((c)->io[(r)/4] = (w))
static void myscreenputs(char *s, int n);
static int
screendatainit(Ctlr *ctlr, uint x, uint y)
{
Rectangle r;
if(memimageinit() < 0)
return -1;
r = Rect(0, 0, x, y);
ctlr->scrdata.ref = 1;
ctlr->scrdata.bdata = ucalloc(r.max.x * r.max.y * 2);
if(!ctlr->scrdata.bdata)
return -1;
ctlr->scrimg = allocmemimaged(r, RGB16, &ctlr->scrdata);
if(!ctlr->scrimg)
return -1;
ctlr->scrfont = getmemdefont();
return 0;
}
static Memimage*
screenmkcolor(Memimage *scr, ulong color)
{
Memimage *i;
i = allocmemimage(Rect(0, 0, 1, 1), scr->chan);
if(i) {
i->flags |= Frepl;
i->clipr = scr->r;
memfillcolor(i, color);
}
return i;
}
static void
screenwin(Ctlr *ctlr)
{
Rectangle r;
Memimage *i;
Point p;
int h;
ctlr->font.y = h = ctlr->scrfont->height;
ctlr->font.x = ctlr->scrfont->info[' '].width;
r = ctlr->scrimg->r;
if(i = screenmkcolor(ctlr->scrimg, 0x0D686BFF)) {
memimagedraw(ctlr->scrimg, r, i, ZP, memopaque, ZP, S);
freememimage(i);
}
r = insetrect(r, 16); memimagedraw(ctlr->scrimg, r, memblack, ZP, memopaque, ZP, S);
r = insetrect(r, 4); memimagedraw(ctlr->scrimg, r, memwhite, ZP, memopaque, ZP, S);
if(i = screenmkcolor(ctlr->scrimg, 0xaaaaaaff)) {
memimagedraw(ctlr->scrimg, Rpt(r.min, Pt(r.max.x, r.min.y+h+12)), i, ZP, memopaque, ZP, S);
freememimage(i);
r = insetrect(r, 6);
p = r.min;
memimagestring(ctlr->scrimg, p, memblack, ZP, ctlr->scrfont, " Plan 9 Console ");
}
ctlr->win = Rpt(addpt(r.min, Pt(0, h + 6)), subpt(r.max, Pt(6, 6)));
ctlr->pos = ctlr->win.min;
screenputs = myscreenputs;
}
void
screeninit(void)
{
Ctlr *c;
uint x, y;
c = &ctlr;
if((csr32r(c, RDconfig) & DClcdbits) != DClcdbits24)
return;
x = ((csr32r(c, RDgfxsize) & 0x0000ffff) >> 0) + 1;;
y = ((csr32r(c, RDgfxsize) & 0xffff0000) >> 16) + 1;
if(screendatainit(c, x, y) < 0)
return;
screenwin(c);
screenputs(kmesg.buf, kmesg.n);
csr32w(c, RDgfxba, (uintptr) c->scrdata.bdata);
csr32w(c, RDcontrol, csr32r(c, RDcontrol) | DClcdgo | DClcdon);
conf.monitor = 1;
}
static void
screenscroll(Ctlr *ctlr)
{
int o, h;
Point p;
Rectangle r;
h = ctlr->font.y;
o = Scroll * h;
r = Rpt(ctlr->win.min, Pt(ctlr->win.max.x, ctlr->win.max.y - o));
p = Pt(ctlr->win.min.x, ctlr->win.min.y + o);
memimagedraw(ctlr->scrimg, r, ctlr->scrimg, p, nil, p, S);
flushmemscreen(r);
r = Rpt(Pt(ctlr->win.min.x, ctlr->win.max.y - o), ctlr->win.max);
memimagedraw(ctlr->scrimg, r, memwhite, ZP, nil, ZP, S);
flushmemscreen(r);
ctlr->pos.y -= o;
}
static void
screenputc(Ctlr *ctlr, char *buf)
{
Point p;
Rectangle r;
uint chr;
int w, h;
static int *xp;
static int xbuf[256];
w = ctlr->font.x;
h = ctlr->font.y;
if(xp < xbuf || xp >= &xbuf[nelem(xbuf)])
xp = xbuf;
switch(buf[0]) {
case '\n':
if(ctlr->pos.y + h >= ctlr->win.max.y)
screenscroll(ctlr);
ctlr->pos.y += h;
screenputc(ctlr, "\r");
break;
case '\r':
xp = xbuf;
ctlr->pos.x = ctlr->win.min.x;
break;
case '\t':
if(ctlr->pos.x >= ctlr->win.max.x - 4 * w)
screenputc(ctlr, "\n");
chr = (ctlr->pos.x - ctlr->win.min.x) / w;
chr = Tab - chr % Tab;
*xp++ = ctlr->pos.x;
r = Rect(ctlr->pos.x, ctlr->pos.y, ctlr->pos.x + chr * w, ctlr->pos.y + h);
memimagedraw(ctlr->scrimg, r, memwhite, ZP, memopaque, ZP, S);
flushmemscreen(r);
ctlr->pos.x += chr * w;
break;
case '\b':
if(xp <= xbuf)
break;
xp--;
r = Rect(*xp, ctlr->pos.y, ctlr->pos.x, ctlr->pos.y + h);
memimagedraw(ctlr->scrimg, r, memwhite, ZP, memopaque, ZP, S);
ctlr->pos.x = *xp;
break;
case '\0':
break;
default:
p = memsubfontwidth(ctlr->scrfont, buf); w = p.x;
if(ctlr->pos.x >= ctlr->win.max.x - w)
screenputc(ctlr, "\n");
*xp++ = ctlr->pos.x;
r = Rect(ctlr->pos.x, ctlr->pos.y, ctlr->pos.x + w, ctlr->pos.y + h);
memimagedraw(ctlr->scrimg, r, memwhite, ZP, memopaque, ZP, S);
memimagestring(ctlr->scrimg, ctlr->pos, memblack, ZP, ctlr->scrfont, buf);
ctlr->pos.x += w;
break;
}
}
static void
myscreenputs(char *s, int n)
{
Ctlr *c;
Rune r;
int i;
char buf[UTFmax];
c = &ctlr;
if(!c->scrimg)
return;
if(!islo()) {
/* don't deadlock trying to print in an interrupt */
if(!canlock(c))
return;
} else {
lock(c);
}
while(n > 0) {
i = chartorune(&r, s);
if(i == 0) {
s++; n--;
continue;
}
memmove(buf, s, i);
buf[i] = 0;
s += i; n -= i;
screenputc(c, buf);
}
unlock(c);
}
Memdata*
attachscreen(Rectangle *r, ulong *chan, int *d, int *width, int *softscreen)
{
Ctlr *c;
c = &ctlr;
if(!c->scrimg)
return nil;
*r = c->scrimg->r;
*d = c->scrimg->depth;
*chan = c->scrimg->chan;
*width = c->scrimg->width;
*softscreen = 1;
c->scrdata.ref++;
return &c->scrdata;
}
void
getcolor(ulong, ulong *, ulong *, ulong *)
{
}
int
setcolor(ulong, ulong, ulong, ulong)
{
return 0;
}
void
flushmemscreen(Rectangle)
{
}
void
mouseresize(void)
{
}