ref: 4e7da28c9aec8d91f9484a55b19c762d828a34f3
dir: /hidpi-1.patch/
diff c7dcc82b0be805717efbe77c98eaadf3ee1e31af uncommitted
--- a/sys/include/ape/draw.h
+++ b/sys/include/ape/draw.h
@@ -208,6 +208,7 @@
Image *windows;
Image *screenimage;
int _isnewdisplay;
+ int dpi;
};
struct Image
--- a/sys/include/draw.h
+++ b/sys/include/draw.h
@@ -200,6 +200,10 @@
Image *windows;
Image *screenimage;
int _isnewdisplay;
+ int dpi;
};
struct Image
--- a/sys/src/9/port/devdraw.c
+++ b/sys/src/9/port/devdraw.c
@@ -77,6 +77,8 @@
int refreshme;
int infoid;
int op;
+ int displaydpi;
+ int forcedpi;
};
struct Refresh
@@ -166,6 +168,8 @@
void drawfreedimage(DImage*);
Client* drawclientofpath(ulong);
DImage* allocdimage(Memimage*);
+
+int displaydpi = 100;
static char Enodrawimage[] = "unknown id for draw image";
static char Enodrawscreen[] = "unknown id for draw screen";
@@ -785,6 +789,7 @@
cl->slot = i;
cl->clientid = ++sdraw.clientid;
cl->op = SoverD;
+ cl->displaydpi=100;
sdraw.client[i] = cl;
return cl;
}
@@ -1396,6 +1401,7 @@
int c, repl, m, y, dstid, scrnid, ni, ci, j, nw, e0, e1, op, ox, oy, oesize, esize, doflush;
uchar *u, *a, refresh;
char *fmt;
+ Fmt f;
ulong value, chan;
Rectangle r, clipr;
Point p, q, *pp, sp;
@@ -1643,6 +1649,35 @@
font->nfchar = ni;
font->ascent = a[9];
continue;
+
+ /* query: 'Q' n[1] queryspec[n] */
+ case 'q':
+ if(n < 2) {
+ error(Eshortdraw);
+ }
+ m = 1+1+a[1];
+ if(n < m) {
+ error(Eshortdraw);
+ }
+ fmtstrinit(&f);
+ for(c=0; c<a[1]; c++) {
+ switch(a[2+c]) {
+ default:
+ error("unknown query");
+ case 'd': /* dpi */
+ if(client->forcedpi)
+ fmtprint(&f, "%11d ", client->forcedpi);
+ else
+ fmtprint(&f, "%11d ", client->displaydpi);
+ break;
+ }
+ }
+ client->readdata = (uchar*)fmtstrflush(&f);
+ if(client->readdata == nil)
+ error(Enomem);
+ client->nreaddata = strlen((char*)client->readdata);
+ continue;
+
/* load character: 'l' fontid[4] srcid[4] index[2] R[4*4] P[2*4] left[1] width[1] */
case 'l':
--- a/sys/src/libdraw/alloc.c
+++ b/sys/src/libdraw/alloc.c
@@ -170,6 +170,19 @@
i->clipr.max.y = atoi(buf+11*12);
i->screen = nil;
i->next = nil;
+
+ /* flush pending data so we don't get error allocating the image */
+ flushimage(d, 0);
+ a = bufimage(d, 3);
+ if(a == nil)
+ goto Error;
+ a[0] = 'q';
+ a[1] = 1;
+ a[2] = 'd';
+ d->dpi = 100;
+ if (flushimage(d, 0) >= 0 && pread(d->ctlfd, buf, 12, 0) == 12)
+ d->dpi = atoi(buf);
return i;
}