code: drawterm

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gui-x11: implement screensize()

--- a/gui-x11/x11.c

+++ b/gui-x11/x11.c

@@ -43,7 +43,7 @@

 static int 		plan9tox11[256]; /* Values for mapping between */

 static int 		x11toplan9[256]; /* X11 and Plan 9 */

 static	GC		xgccopy;

-static	ulong	xscreenchan;

+static	ulong		xscreenchan;

 static	Drawable	xscreenid;

 static	XImage*		xscreenimage;

 static	Visual		*xvis;

@@ -125,7 +125,6 @@

 static	void		xdestroy(XEvent*);

 static	void		xselect(XEvent*, XDisplay*);

 static	void		xproc(void*);

-static	Memimage*		xinitscreen(void);

 static	void		initmap(Window);

 static	GC		creategc(Drawable);

 static	void		graphicscmap(XColor*);

@@ -138,6 +137,27 @@

 Memimage *gscreen;

 Screeninfo screen;

+static int

+shutup(XDisplay *d, XErrorEvent *e)

+{

+	char buf[200];

+	iprint("X error: error code=%d, request_code=%d, minor=%d\n", e->error_code, e->request_code, e->minor_code);

+	XGetErrorText(d, e->error_code, buf, sizeof(buf));

+	iprint("%s\n", buf);

+	USED(d);

+	USED(e);

+	return 0;

+}

+

+static int

+panicshutup(XDisplay *d)

+{

+	screenputs = 0;

+	panic("x error");

+	return -1;

+}

+

+

 void

 flushmemscreen(Rectangle r)

 {

@@ -167,171 +187,7 @@

 void

 screeninit(void)

 {

-	_memmkcmap();

-

-	gscreen = xinitscreen();

-	kproc("xscreen", xproc, nil);

-

-	memimageinit();

-	terminit();

-	qlock(&drawlock);

-	flushmemscreen(gscreen->clipr);

-	qunlock(&drawlock);

-}

-

-void

-screensize(Rectangle r, ulong chan)

-{

-	USED(chan);

-}

-

-Memdata*

-attachscreen(Rectangle *r, ulong *chan, int *depth, int *width, int *softscreen)

-{

-	*r = gscreen->clipr;

-	*chan = gscreen->chan;

-	*depth = gscreen->depth;

-	*width = gscreen->width;

-	*softscreen = 1;

-

-	gscreen->data->ref++;

-	return gscreen->data;

-}

-

-static int

-revbyte(int b)

-{

-	int r;

-

-	r = 0;

-	r |= (b&0x01) << 7;

-	r |= (b&0x02) << 5;

-	r |= (b&0x04) << 3;

-	r |= (b&0x08) << 1;

-	r |= (b&0x10) >> 1;

-	r |= (b&0x20) >> 3;

-	r |= (b&0x40) >> 5;

-	r |= (b&0x80) >> 7;

-	return r;

-}

-

-void

-mouseset(Point xy)

-{

-	qlock(&drawlock);

-	XWarpPointer(xdisplay, None, xdrawable, 0, 0, 0, 0, xy.x, xy.y);

-	XFlush(xdisplay);

-	qunlock(&drawlock);

-}

-

-static XCursor xcursor;

-

-void

-setcursor(void)

-{

-	XCursor xc;

-	XColor fg, bg;

-	Pixmap xsrc, xmask;

-	int i;

-	uchar src[2*16], mask[2*16];

-

-	for(i=0; i<2*16; i++){

-		src[i] = revbyte(cursor.set[i]);

-		mask[i] = revbyte(cursor.set[i] | cursor.clr[i]);

-	}

-

-	qlock(&drawlock);

-	fg = map[0];

-	bg = map[255];

-	xsrc = XCreateBitmapFromData(xdisplay, xdrawable, (char*)src, 16, 16);

-	xmask = XCreateBitmapFromData(xdisplay, xdrawable, (char*)mask, 16, 16);

-	xc = XCreatePixmapCursor(xdisplay, xsrc, xmask, &fg, &bg, -cursor.offset.x, -cursor.offset.y);

-	if(xc != 0) {

-		XDefineCursor(xdisplay, xdrawable, xc);

-		if(xcursor != 0)

-			XFreeCursor(xdisplay, xcursor);

-		xcursor = xc;

-	}

-	XFreePixmap(xdisplay, xsrc);

-	XFreePixmap(xdisplay, xmask);

-	XFlush(xdisplay);

-	qunlock(&drawlock);

-}

-

-void

-cursorarrow(void)

-{

-	qlock(&drawlock);

-	if(xcursor != 0){

-		XFreeCursor(xdisplay, xcursor);

-		xcursor = 0;

-	}

-	XUndefineCursor(xdisplay, xdrawable);

-	XFlush(xdisplay);

-	qunlock(&drawlock);

-}

-

-static void

-xproc(void *arg)

-{

-	ulong mask;

-	XEvent event;

-

-	mask = 	KeyPressMask|

-		KeyReleaseMask|

-		ButtonPressMask|

-		ButtonReleaseMask|

-		PointerMotionMask|

-		Button1MotionMask|

-		Button2MotionMask|

-		Button3MotionMask|

-		Button4MotionMask|

-		Button5MotionMask|

-		ExposureMask|

-		EnterWindowMask|

-		LeaveWindowMask|

-		FocusChangeMask|

-		StructureNotifyMask;

-

-	XSelectInput(xkmcon, xdrawable, mask);

-	for(;;) {

-		//XWindowEvent(xkmcon, xdrawable, mask, &event);

-		XNextEvent(xkmcon, &event);

-		xselect(&event, xkmcon);

-		xkeyboard(&event);

-		xmouse(&event);

-		xresize(&event);

-		xexpose(&event);

-		xmapping(&event);

-		xdestroy(&event);

-	}

-}

-

-static int

-shutup(XDisplay *d, XErrorEvent *e)

-{

-	char buf[200];

-	iprint("X error: error code=%d, request_code=%d, minor=%d\n", e->error_code, e->request_code, e->minor_code);

-	XGetErrorText(d, e->error_code, buf, sizeof(buf));

-	iprint("%s\n", buf);

-	USED(d);

-	USED(e);

-	return 0;

-}

-

-static int

-panicshutup(XDisplay *d)

-{

-	screenputs = 0;

-	panic("x error");

-	return -1;

-}

-

-static Memimage*

-xinitscreen(void)

-{

-	Memimage *gscreen;

-	int i, xsize, ysize;

+	int i, n;

 	char *argv[2];

 	Window rootwin;

 	Rectangle r;

@@ -344,11 +200,9 @@

 	XSizeHints normalhints;

 	XSetWindowAttributes attrs;

 	XPixmapFormatValues *pfmt;

-	int n;

 	Pixmap icon_pixmap;

-	xscreenid = 0;

-	xdrawable = 0;

+	memimageinit();

 	xdisplay = XOpenDisplay(NULL);

 	if(xdisplay == 0)

@@ -356,6 +210,23 @@

 	XSetErrorHandler(shutup);

 	XSetIOErrorHandler(panicshutup);

+

+	xkmcon = XOpenDisplay(NULL);

+	if(xkmcon == 0)

+		panic("XOpenDisplay: %r [DISPLAY=%s]", getenv("DISPLAY"));

+

+	XkbSetDetectableAutoRepeat(xkmcon, True, NULL);

+

+	clipboard = XInternAtom(xkmcon, "CLIPBOARD", False);

+	utf8string = XInternAtom(xkmcon, "UTF8_STRING", False);

+	targets = XInternAtom(xkmcon, "TARGETS", False);

+	text = XInternAtom(xkmcon, "TEXT", False);

+	compoundtext = XInternAtom(xkmcon, "COMPOUND_TEXT", False);

+

+	xsnarfcon = XOpenDisplay(NULL);

+	if(xsnarfcon == 0)

+		panic("XOpenDisplay: %r [DISPLAY=%s]", getenv("DISPLAY"));

+

 	rootscreennum = DefaultScreen(xdisplay);

 	rootwin = DefaultRootWindow(xdisplay);

@@ -431,17 +302,14 @@

 	}

 	r.min = ZP;

-	r.max.x = WidthOfScreen(screen);

-	r.max.y = HeightOfScreen(screen);

-

-	xsize = Dx(r)*3/4;

-	ysize = Dy(r)*3/4;

+	r.max.x = WidthOfScreen(screen)*3/4;

+	r.max.y = HeightOfScreen(screen)*3/4;

 	attrs.colormap = xcmap;

 	attrs.background_pixel = 0;

 	attrs.border_pixel = 0;

 	/* attrs.override_redirect = 1;*/ /* WM leave me alone! |CWOverrideRedirect */

-	xdrawable = XCreateWindow(xdisplay, rootwin, 0, 0, xsize, ysize, 0, 

+	xdrawable = XCreateWindow(xdisplay, rootwin, 0, 0, Dx(r), Dy(r), 0, 

 		xscreendepth, InputOutput, xvis, CWBackPixel|CWBorderPixel|CWColormap, &attrs);

 	/* load the given bitmap data and create an X pixmap containing it. */

@@ -456,11 +324,9 @@

 	name.encoding = XA_STRING;

 	name.format = 8;

 	name.nitems = strlen((char*)name.value);

-	normalhints.flags = USSize|PMaxSize;

-	normalhints.max_width = Dx(r);

-	normalhints.max_height = Dy(r);

-	normalhints.width = xsize;

-	normalhints.height = ysize;

+	normalhints.flags = USSize;

+	normalhints.width = Dx(r);

+	normalhints.height = Dy(r);

 	hints.flags = IconPixmapHint |InputHint|StateHint;

 	hints.input = 1;

 	hints.initial_state = NormalState;

@@ -486,27 +352,182 @@

 	XMapWindow(xdisplay, xdrawable);

 	XFlush(xdisplay);

-	xscreenid = XCreatePixmap(xdisplay, xdrawable, Dx(r), Dy(r), xscreendepth);

-	gscreen = xallocmemimage(r, xscreenchan, xscreenid, &xscreenimage);

-	gscreen->clipr = Rect(0,0,xsize,ysize);

-	xgccopy = creategc(xscreenid);

+	screensize(r, xscreenchan);

+	if(gscreen == nil)

+		panic("screensize failed");

-	xkmcon = XOpenDisplay(NULL);

-	if(xkmcon == 0)

-		panic("XOpenDisplay: %r [DISPLAY=%s]", getenv("DISPLAY"));

-	XkbSetDetectableAutoRepeat(xkmcon, True, NULL);

+	gscreen->clipr = r;

+	kproc("xscreen", xproc, nil);

-	xsnarfcon = XOpenDisplay(NULL);

-	if(xsnarfcon == 0)

-		panic("XOpenDisplay: %r [DISPLAY=%s]", getenv("DISPLAY"));

+	terminit();

-	clipboard = XInternAtom(xkmcon, "CLIPBOARD", False);

-	utf8string = XInternAtom(xkmcon, "UTF8_STRING", False);

-	targets = XInternAtom(xkmcon, "TARGETS", False);

-	text = XInternAtom(xkmcon, "TEXT", False);

-	compoundtext = XInternAtom(xkmcon, "COMPOUND_TEXT", False);

+	qlock(&drawlock);

+	flushmemscreen(gscreen->clipr);

+	qunlock(&drawlock);

+}

-	return gscreen;

+void

+screensize(Rectangle r, ulong chan)

+{

+	Drawable pix;

+	Memimage *mi;

+	XImage *xi;

+	GC gc;

+

+	pix = XCreatePixmap(xdisplay, xdrawable, Dx(r), Dy(r), xscreendepth);

+	if(pix == 0)

+		return;

+

+	gc = creategc(pix);

+	if(gc == NULL){

+		XFreePixmap(xdisplay, pix);

+		return;

+	}

+

+	mi = xallocmemimage(r, chan, pix, &xi);

+	if(mi == nil){

+		XFreeGC(xdisplay, xgccopy);

+		XFreePixmap(xdisplay, pix);

+		return;

+	}

+

+	if(gscreen != nil){

+		xscreenimage->data = NULL;	/* free'd by freememimage() */

+		XDestroyImage(xscreenimage);

+		freememimage(gscreen);

+

+		XFreeGC(xdisplay, xgccopy);

+		XFreePixmap(xdisplay, xscreenid);

+	}

+

+	xscreenimage = xi;

+	xscreenid = pix;

+	xgccopy = gc;

+

+	gscreen = mi;

+	gscreen->clipr = ZR;

+}

+

+Memdata*

+attachscreen(Rectangle *r, ulong *chan, int *depth, int *width, int *softscreen)

+{

+	*r = gscreen->clipr;

+	*chan = gscreen->chan;

+	*depth = gscreen->depth;

+	*width = gscreen->width;

+	*softscreen = 1;

+

+	gscreen->data->ref++;

+	return gscreen->data;

+}

+

+static int

+revbyte(int b)

+{

+	int r;

+

+	r = 0;

+	r |= (b&0x01) << 7;

+	r |= (b&0x02) << 5;

+	r |= (b&0x04) << 3;

+	r |= (b&0x08) << 1;

+	r |= (b&0x10) >> 1;

+	r |= (b&0x20) >> 3;

+	r |= (b&0x40) >> 5;

+	r |= (b&0x80) >> 7;

+	return r;

+}

+

+void

+mouseset(Point xy)

+{

+	qlock(&drawlock);

+	XWarpPointer(xdisplay, None, xdrawable, 0, 0, 0, 0, xy.x, xy.y);

+	XFlush(xdisplay);

+	qunlock(&drawlock);

+}

+

+static XCursor xcursor;

+

+void

+setcursor(void)

+{

+	XCursor xc;

+	XColor fg, bg;

+	Pixmap xsrc, xmask;

+	int i;

+	uchar src[2*16], mask[2*16];

+

+	for(i=0; i<2*16; i++){

+		src[i] = revbyte(cursor.set[i]);

+		mask[i] = revbyte(cursor.set[i] | cursor.clr[i]);

+	}

+

+	qlock(&drawlock);

+	fg = map[0];

+	bg = map[255];

+	xsrc = XCreateBitmapFromData(xdisplay, xdrawable, (char*)src, 16, 16);

+	xmask = XCreateBitmapFromData(xdisplay, xdrawable, (char*)mask, 16, 16);

+	xc = XCreatePixmapCursor(xdisplay, xsrc, xmask, &fg, &bg, -cursor.offset.x, -cursor.offset.y);

+	if(xc != 0) {

+		XDefineCursor(xdisplay, xdrawable, xc);

+		if(xcursor != 0)

+			XFreeCursor(xdisplay, xcursor);

+		xcursor = xc;

+	}

+	XFreePixmap(xdisplay, xsrc);

+	XFreePixmap(xdisplay, xmask);

+	XFlush(xdisplay);

+	qunlock(&drawlock);

+}

+

+void

+cursorarrow(void)

+{

+	qlock(&drawlock);

+	if(xcursor != 0){

+		XFreeCursor(xdisplay, xcursor);

+		xcursor = 0;

+	}

+	XUndefineCursor(xdisplay, xdrawable);

+	XFlush(xdisplay);

+	qunlock(&drawlock);

+}

+

+static void

+xproc(void *arg)

+{

+	ulong mask;

+	XEvent event;

+

+	mask = 	KeyPressMask|

+		KeyReleaseMask|

+		ButtonPressMask|

+		ButtonReleaseMask|

+		PointerMotionMask|

+		Button1MotionMask|

+		Button2MotionMask|

+		Button3MotionMask|

+		Button4MotionMask|

+		Button5MotionMask|

+		ExposureMask|

+		EnterWindowMask|

+		LeaveWindowMask|

+		FocusChangeMask|

+		StructureNotifyMask;

+

+	XSelectInput(xkmcon, xdrawable, mask);

+	for(;;) {

+		//XWindowEvent(xkmcon, xdrawable, mask, &event);

+		XNextEvent(xkmcon, &event);

+		xselect(&event, xkmcon);

+		xkeyboard(&event);

+		xmouse(&event);

+		xresize(&event);

+		xexpose(&event);

+		xmapping(&event);

+		xdestroy(&event);

+	}

 }

 static void