Re: [dwm] dwm and dualhead

thanks for your approach - but I was not able to compile it (patched
against dwm 5.3.1) it does not find the function "usegrab" (used in
"movemouse" and "resizemouse"...

On Thu, Dec 11, 2008 at 10:59:16PM -0500, Jeremy Jay wrote:
> Here's my XRandR and multi-screen patch, its pretty much not what you've
> asked for here, but I'll throw it out as a starting point. I haven't
> had a chance to test it much, so don't yell at me if your screen
> explodes...
>
> one tag for all screens. status bar is only shown on screen 0 (although
> this can very easily be set to another screen)
>
> layouts updated for multi-head:
> tile: windows are evenly divided among screens.
> monocle: one window per screen, all remaining windows on last screen.
>
> Jeremy
>
>
> On Thu 11 Dec 2008 - 10:18AM, Mate Nagy wrote:
> > Hiho,
> > On Thu, Dec 11, 2008 at 09:39:19AM +0100, yy wrote:
> > > on this list and, if somebody finds a great _general_ solution (which
> > > seems difficult, but I would be love to be wrong), I'm sure Anselm
> > > would be glad to include it in the official release.
> > > Just my 2cts,
> > I don't see anything "difficult" about this. In fact, awesome generally
> > gets this right. This is what I want from dwm:
> >
> > - handle each xrandr screen separately
> > including all data structures, so different layout, client set,
> > tagging, etc.
> > - draw statusbar everywhere (from the same input text)
> > - have a key-bindable function for:
> > - changing between screens
> > - move window to another screen
> > - do something semi-intelligent when a screen with clients goes away,
> > e.g. put clients in previous/next screen oslt.
> >
> > Basically, it should behave as multiple separate dwms, except that
> > clients can be sent from screen to screen and all dwms have the same
> > configuration.
> >
> > Speculation: in this configuration, especially when changing between
> > screens, moving the mouse pointer to the location of the focus might be
> > more important/desirable. This might be a compile-time option or patch..
> >
> > Mate
> >

> diff -r 79bf47074a49 config.mk
> --- a/config.mk Sat Dec 06 16:20:14 2008 +0000
> +++ b/config.mk Thu Dec 11 22:50:24 2008 -0500
> @@ -13,6 +13,8 @@
> # Xinerama, un-comment if you want it
> #XINERAMALIBS = -L${X11LIB} -lXinerama
> #XINERAMAFLAGS = -DXINERAMA
> +XINERAMALIBS = -L${X11LIB} -lXrandr
> +XINERAMAFLAGS = -DXRANDR
>
> # includes and libs
> INCS = -I. -I/usr/include -I${X11INC}
> diff -r 79bf47074a49 dwm.c
> --- a/dwm.c Sat Dec 06 16:20:14 2008 +0000
> +++ b/dwm.c Thu Dec 11 22:50:24 2008 -0500
> @@ -42,6 +42,9 @@
> #ifdef XINERAMA
> #include <X11/extensions/Xinerama.h>
> #endif
> +#ifdef XRANDR
> +#include <X11/extensions/Xrandr.h>
> +#endif
>
> /* macros */
> #define BUTTONMASK (ButtonPressMask|ButtonReleaseMask)
> @@ -52,6 +55,7 @@
> #define MAX(a, b) ((a) > (b) ? (a) : (b))
> #define MIN(a, b) ((a) < (b) ? (a) : (b))
> #define MAXTAGLEN 16
> +#define MAXMONITORS 8
> #define MOUSEMASK (BUTTONMASK|PointerMotionMask)
> #define WIDTH(x) ((x)->w + 2 * (x)->bw)
> #define HEIGHT(x) ((x)->h + 2 * (x)->bw)
> @@ -206,10 +210,11 @@
>
> /* variables */
> static char stext[256];
> -static int screen;
> +static int screen, mons;
> static int sx, sy, sw, sh; /* X display screen geometry x, y, width, height */
> static int by, bh, blw; /* bar geometry y, height and layout symbol width */
> static int wx, wy, ww, wh; /* window area geometry x, y, width, height, bar excluded */
> +static int mx[MAXMONITORS], my[MAXMONITORS], mw[MAXMONITORS], mh[MAXMONITORS]; /* monitor area geometry x, y, width, height, bar excluded */
> static unsigned int seltags = 0, sellt = 0;
> static int (*xerrorxlib)(Display *, XErrorEvent *);
> static unsigned int numlockmask = 0;
> @@ -926,10 +931,14 @@
>
> void
> monocle(void) {
> - Client *c;
> + int m, i;
> + Client *c = nexttiled(clients);
>
> - for(c = nexttiled(clients); c; c = nexttiled(c->next))
> - resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
> + for(m=0; m<mons; m++) {
> + wx=mx[m]; wy=my[m]; ww=mw[m]; wh=mh[m];
> + for(i=((m==(mons-1))?-1:1); c && i!=0; c = nexttiled(c->next), i--)
> + resize(c, wx, wy, ww - 2 * c->bw, wh - 2 * c->bw, resizehints);
> + }
> }
>
> void
> @@ -1427,35 +1436,39 @@
>
> void
> tile(void) {
> - int x, y, h, w, mw;
> - unsigned int i, n;
> + int x, y, h, w, maw;
> + unsigned int i, n, r, g, m;
> Client *c;
>
> for(n = 0, c = nexttiled(clients); c; c = nexttiled(c->next), n++);
> if(n == 0)
> return;
>
> - /* master */
> c = nexttiled(clients);
> - mw = mfact * ww;
> - resize(c, wx, wy, (n == 1 ? ww : mw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
> + for(m=0, g=(n+(mons/2))/mons, r=n-g, n=g; c && m<mons; m++, n=(r<g?r:g), r-=n) {
> + wx=mx[m]; wy=my[m]; ww=mw[m]; wh=mh[m];
> + /* master */
> + maw = mfact * ww;
> + resize(c, wx, wy, (n == 1 ? ww : maw) - 2 * c->bw, wh - 2 * c->bw, resizehints);
> + c = nexttiled(c->next);
>
> - if(--n == 0)
> - return;
> + if( --n == 0 )
> + continue;
>
> - /* tile stack */
> - x = (wx + mw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + mw;
> - y = wy;
> - w = (wx + mw > c->x + c->w) ? wx + ww - x : ww - mw;
> - h = wh / n;
> - if(h < bh)
> - h = wh;
> + /* tile stack */
> + x = (wx + maw > c->x + c->w) ? c->x + c->w + 2 * c->bw : wx + maw;
> + y = wy;
> + w = (wx + maw > c->x + c->w) ? wx + ww - x : ww - maw;
> + h = wh / n;
> + if(h < bh)
> + h = wh;
>
> - for(i = 0, c = nexttiled(c->next); c; c = nexttiled(c->next), i++) {
> - resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == n)
> - ? wy + wh - y - 2 * c->bw : h - 2 * c->bw), resizehints);
> - if(h != wh)
> - y = c->y + HEIGHT(c);
> + for(i = 0; c && (m==(mons-1)?1:n); c = nexttiled(c->next), i++, n--) {
> + resize(c, x, y, w - 2 * c->bw, /* remainder */ ((i + 1 == g)
> + ? wy + wh - y - 2 * c->bw : h - 2 * c->bw), resizehints);
> + if(h != wh)
> + y = c->y + HEIGHT(c);
> + }
> }
> }
>
> @@ -1565,11 +1578,45 @@
> }
> else
> #endif
> +#ifdef XRANDR
> + if( True /* xrr is active? */ ) {
> + int i=0, j=0, k=0, o=0;
> + XRRScreenResources *screenInfo = XRRGetScreenResources( dpy, root );
> + XRRCrtcInfo *crtcInfo = NULL;
> + XID seenOutputs[MAXMONITORS*16]; // 16 clones should be enough
> + for(i=0, mons=0; i<screenInfo->ncrtc; i++) {
> + crtcInfo = XRRGetCrtcInfo( dpy, screenInfo, screenInfo->crtcs[i] );
> +
> + if( crtcInfo->noutput!=0 ) {
> + Bool dupe=False;
> + for(j=0; j<crtcInfo->noutput; j++) {
> + for(k=0; seenOutputs[k]!=crtcInfo->outputs[j] && k<o; k++);
> + if( k!=o )
> + dupe=True;
> + else
> + seenOutputs[o++]=crtcInfo->outputs[j];
> + }
> +
> + if( !dupe ) {
> + my[mons]=crtcInfo->y + (mons==0 && showbar && topbar ? bh : 0);
> + mh[mons]=crtcInfo->height - (mons==0 && showbar?bh:0);
> + mw[mons]=crtcInfo->width;
> + mx[mons++]=crtcInfo->x;
> + }
> + }
> + }
> + XRRFreeCrtcInfo(crtcInfo);
> + XRRFreeScreenResources(screenInfo);
> +
> + wx = mx[0]; wy = my[0]; ww = mw[0]; wh = mh[0];
> + } else
> +#endif
> {
> - wx = sx;
> - wy = showbar && topbar ? sy + bh : sy;
> - ww = sw;
> - wh = showbar ? sh - bh : sh;
> + mons=1;
> + mx[0] = wx = sx;
> + my[0] = wy = showbar && topbar ? sy + bh : sy;
> + mw[0] = ww = sw;
> + mh[0] = wh = showbar ? sh - bh : sh;
> }
>
> /* bar position */