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lib/ChordPro/res/abc/abc2svg/grid-1.js  view on Meta::CPAN

	}

	// get the number of columns
	if (nc < 0)
		nc = -nc
	if (nc < 3)				// auto
		nc = cells.length % 6 == 0 ? 6 : 8
	if (nc > cells.length)
		nc = cells.length;

	hr = font.size * 2
	if (wmx < hr * 1.5)
		wmx = hr * 1.5				// cell width

	x0 = img.width - img.lm - img.rm		// staff width
	w = wmx * nc
	if (w > x0) {
		nc /= 2;
		w /= 2
	}

	// generate the cells
	yl = -1
	y = -1 + font.size * .6
	nr = -1
	x0 = (x0 / cfmt.scale - w) / 2
	d = []
	for (i = 0; i < cells.length; i++) {
		if (i == 0
		 || (grid.repbrk
		  && (bars[i].slice(-1) == ':' || bars[i][0] == ':'))
		 || parts[i]
		 || k >= nc) {
			y -= hr			// new row
			yl -= hr
			x = x0 + wmx / 2
			k = 0
			nr++
			d[nr] = []
		}
		d[nr][k] = 1
		k++
		build_cell(cells[i], x, y, yl, hr)
		x += wmx
	}

	// draw the lines
	abc.out_svg('<path class="stroke" stroke-width="1" d="\n')
	draw_hl()
	draw_vl()
	abc.out_svg('"/>\n')

	// show the repeat signs and the parts
	y = -1 + font.size * .7
	x = x0
	for (i = 0; i < bars.length; i++) {
		bar = bars[i]
		if (bar[0] == ':') {
			abc.out_svg('<text class="' + cls + '" x="')
			abc.out_sxsy(x - 5, '" y="', y)
			abc.out_svg('" style="font-weight:bold;font-size:' +
				(font.size * 1.5).toFixed(1) + 'px">:</text>\n')
		}
		if (i == 0
		 || (grid.repbrk
		  && (bar.slice(-1) == ':' || bar[0] == ':'))
		 || parts[i]
		 || k >= nc) {
			y -= hr;			// new row
			x = x0
			k = 0
			if (parts[i]) {
				w = abc.strwh(parts[i])[0]
				abc.out_svg('<text class="' + cls + '" x="')
				abc.out_sxsy(x - 2 - w, '" y="', y)
				abc.out_svg('" style="font-weight:bold">' +
					parts[i] + '</text>\n')
			}
		}
		k++
		if (bar.slice(-1) == ':') {
			abc.out_svg('<text class="' + cls + '" x="')
			abc.out_sxsy(x + 5, '" y="', y)
			abc.out_svg('" style="font-weight:bold;font-size:' +
				(font.size * 1.5).toFixed(1) + 'px">:</text>\n')
		}
		x += wmx
	}
	abc.vskip(hr * (nr + 1) + 6)
} // build_grid()

	// ----- block_gen() -----
    var	p_voice, n, font, f2

	abc.set_page()
	img = abc.get_img()

	// set the text style
	font = abc.get_font('grid')
	if (font.class)
		font.class += ' mid'
	else
		font.class = 'mid'
	cls = abc.font_class(font)

	// define a smaller font
	abc.param_set_font("gsfont",
		font.name + ' ' + (font.size * .7).toFixed(1))
	f2 = cfmt.gsfont
	if (font.weight)
		f2.weight = font.weight
	if (font.style)
		f2.style = font.style
	f2.class = font.class
	abc.add_style("\n.mid {text-anchor:middle}")

	// create the grid
	abc.blk_flush()
	build_grid(s, font)
	abc.blk_flush()
    }, // block_gen()

    set_stems: function(of) {
    var	C = abc2svg.C,
	abc = this,
	tsfirst = abc.get_tsfirst(),
	voice_tb = abc.get_voice_tb(),
	cfmt = abc.cfmt(),
	grid = cfmt.grid

	// extract one of the chord symbols
	// With chords as "[yyy];xxx"
	// (!sel - default) returns "yyy" and (sel) returns "xxx"
	function cs_filter(a_cs) {
	    var	i, cs, t

		for (i = 0; i < a_cs.length; i++) {
			cs = a_cs[i]
			if (cs.type != 'g')
				continue
			t = cs.text
			if (cfmt.altchord) {
				for (i++; i < a_cs.length; i++) {
					cs = a_cs[i]