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

		 || !page.h) {			// empty page
			if (page.in_page)
				abc2svg.page.close_page(page)
			abc2svg.page.open_page(page, 0)
		}
		page.blk = []			// in block
		page.hb = page.h		// keep the offset of the start of tune
		break
	case "<svg":				// SVG image
		h = Number(p.match(/viewBox="0 0 [\d.]+ ([\d.]+)"/)[1])
		while (h + page.h >= page.hmax) { // if (still) page overflow
			ht = page.blk ? 0 :
				this.cfmt().topspace // tune continuation

			if (page.blk) {
				if (!page.hb) {	// overflow on the first page
					blkcpy(page)
					nh = 0
				} else {
					nh = page.h - page.hb
					page.h = page.hb
				}
			}
			abc2svg.page.close_page(page)
			abc2svg.page.open_page(page, ht)

			if (page.blk) {		// if inside a block
				blkcpy(page)	// output the beginning of the tune
				page.h = nh
			}
			if (h > page.hmax)
				break		// error
		}

		// if no overflow yet, keep the block
		if (page.blk)
			page.blk.push(p)
		else
			abc2svg.page.user_out(p)
		page.h += h
		break
	case "</di":				// end of block
		if (page.blk)
			blkcpy(page)
		break
//	default:
////fixme: %%beginml cannot be treated (no information about its height)
//		break
	}
    }, // img_in()

    // handle the page related parameters
    set_fmt: function(of, cmd, parm) {
    var	v,
	user = this.get_user(),
	cfmt = this.cfmt(),
	page = this.page

	if (cmd == "pageheight") {
		v = this.get_unit(parm)
		if (isNaN(v)) {
			this.syntax(1, this.errs.bad_val, '%%' + cmd)
			return
		}
		if (!user.img_out || !abc2svg.abc_end)
			v = 0
		cfmt.pageheight = v
		if (!v) {
			if (abc2svg.page.user_out) {
				user.img_out = abc2svg.page.user_out
				abc2svg.page.user_out = null
				abc2svg.page.abc_end = abc2svg.page.abc_end_o
			}
			delete this.page
			return
		}

		// if first definition, install the hook
		if (!page || !abc2svg.page.user_out) {
			this.page = page = {
				abc: this,
				topmargin: 38,	// 1cm
				botmargin: 38,	// 1cm
//				gutter: 0,
				h: 0,		// current page height
				pn: 0,		// page number
				pna: 0,		// absolute page number
				ffsty: '',	// style of the footer
				first: true	// no skip to next page
			}

			// don't let the backend handle the header/footer
			if (cfmt.header) {
				page.header = cfmt.header;
				cfmt.header = null
			}
			if (cfmt.footer) {
				page.footer = cfmt.footer;
				cfmt.footer = null
			}
			if (cfmt.header1) {
				page.header1 = cfmt.header1
				cfmt.header1 = null
			}
			if (cfmt.header2) {
				page.header2 = cfmt.header2
				cfmt.header2 = null
			}
			if (cfmt.footer2) {
				page.footer2 = cfmt.footer2
				cfmt.footer2 = null
			}

			// get the previously defined page parameters
			if (cfmt.botmargin != undefined) {
				v = this.get_unit(cfmt.botmargin)
				if (!isNaN(v))
					page.botmargin = v
			}
			if (cfmt.topmargin != undefined) {
				v = this.get_unit(cfmt.topmargin)
				if (!isNaN(v))
					page.topmargin = v
			}
			if (cfmt.gutter != undefined) {
				v = this.get_unit(cfmt.gutter)
				if (!isNaN(v))
					page.gutter = v
			}
			if (cfmt.oneperpage)
				page.oneperpage = this.get_bool(cfmt.oneperpage)
			if (!cfmt.dateformat)
				cfmt.dateformat = "%b %e, %Y %H:%M"

			// set the hooks
			if (!abc2svg.page.user_out) {
				abc2svg.page.user_out = user.img_out
				abc2svg.page.abc_end_o = abc2svg.abc_end
			}
			abc2svg.abc_end = abc2svg.page.abc_end.bind(this,
								abc2svg.abc_end)
			user.img_out = abc2svg.page.img_in.bind(this)
		}
		return
	}
	if (page) {
		switch (cmd) {
		case "header":
		case "footer":
		case "header1":
		case "header2":
		case "footer2":
			page[cmd] = parm
			return
		case "newpage":
			if (!parm)
				break
			v = Number(parm)
			if (isNaN(v)) {
				this.syntax(1, this.errs.bad_val, '%%' + cmd)
				return
			}
			page.pn = v - 1
			return
		case "gutter":
		case "botmargin":
		case "topmargin":
			v = this.get_unit(parm)
			if (isNaN(v)) {
				this.syntax(1, this.errs.bad_val, '%%' + cmd)
				return
			}
			page[cmd] = v
			return
		case "oneperpage":
			page[cmd] = this.get_bool(parm)
			return
		}
	}
	of(cmd, parm)
    }, // set_fmt()

    set_hooks: function(abc) {
	abc.set_format("page-format", 1)	// do page formatting
	abc.set_format = abc2svg.page.set_fmt.bind(abc, abc.set_format)
	abc.set_pagef()
    }
} // page

if (!abc2svg.mhooks)
	abc2svg.mhooks = {}
abc2svg.mhooks.page = abc2svg.page.set_hooks