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wildfowl

Banned

Registered: 2014-10-16

Posts: 82

[SOLVED] DWM: Init Layouts with Pertag-6.1 patch

I'm trying to add the init layout to dwm 6.1 (Xft).

I'm going according to the pertag patch here:

http://dwm.suckless.org/patches/dwm-6.1-pertag.diff

I would like the tags to initialize with a predefined layout {0, 1, 2}.

I don't know if this feature is already built-in into this new pertag patch but the main function involved here is:

Monitor *
createmon(void) {
	Monitor *m;
	int i;

	if(!(m = (Monitor *)calloc(1, sizeof(Monitor))))
		die("fatal: could not malloc() %u bytes\n", sizeof(Monitor));
	m->tagset[0] = m->tagset[1] = 1;
	m->mfact = mfact;
	m->nmaster = nmaster;
	m->showbar = showbar;
	m->topbar = topbar;
	m->lt[0] = &layouts[0];
	m->lt[1] = &layouts[1 % LENGTH(layouts)];
	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
	if(!(m->pertag = (Pertag *)calloc(1, sizeof(Pertag))))
		die("fatal: could not malloc() %u bytes\n", sizeof(Pertag));
	m->pertag->curtag = m->pertag->prevtag = 1;
	for(i=0; i <= LENGTH(tags); i++) {
		/* init nmaster */
		m->pertag->nmasters[i] = m->nmaster;

		/* init mfacts */
		m->pertag->mfacts[i] = m->mfact;

		/* init layouts */
		m->pertag->ltidxs[i][0] = m->lt[0];
		m->pertag->ltidxs[i][1] = m->lt[1];
		m->pertag->sellts[i] = m->sellt;

		/* init showbar */
		m->pertag->showbars[i] = m->showbar;

		/* swap focus and zoomswap*/
		m->pertag->prevzooms[i] = NULL;
	}
	return m;
}

There is no documentation or it's nto very clear to me. Can I initialize ltidxs with a predefined matrix in config.h?

Last edited by wildfowl (2015-05-29 10:30:58)

wildfowl

Banned

Registered: 2014-10-16

Posts: 82

Re: [SOLVED] DWM: Init Layouts with Pertag-6.1 patch

Define a new static vector/array variable say as follows:

static const int initlayouts[] = { 0, 2, 0, 1, 1, 0, 0, 1, 1, 0, 0, 2, 2, 0 }; 

Replace the two init layout assignments in the for loop in the function createmon with:

m->pertag->ltidxs[i][0] = &layouts[initlayouts[i-1]];
m->pertag->ltidxs[i][1] = m->lt[1];

Initially it was not obvious to me that ltidxs is a N x 2 array where the first column of the matrix carries the actual layout {0, 1, 2} and crucially that the second column carries just the symbol.

It's a simple hack with the minimum of fuss and so I am happy with it.