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// abc_voice_element.js: Definition of the VoiceElement class.
var VoiceElement = function VoiceElement(voicenumber, voicetotal) {
this.children = [];
this.beams = [];
this.otherchildren = []; // ties, slurs, triplets
this.w = 0;
this.duplicate = false;
this.voicenumber = voicenumber; //number of the voice on a given stave (not staffgroup)
this.voicetotal = voicetotal;
this.bottom = 7;
this.top = 7;
this.specialY = {
tempoHeightAbove: 0,
partHeightAbove: 0,
volumeHeightAbove: 0,
dynamicHeightAbove: 0,
endingHeightAbove: 0,
chordHeightAbove: 0,
lyricHeightAbove: 0,
lyricHeightBelow: 0,
chordHeightBelow: 0,
volumeHeightBelow: 0,
dynamicHeightBelow: 0
};
};
VoiceElement.prototype.addChild = function (absElem) {
// This is always passed an AbsoluteElement
if (absElem.type === 'bar') {
var firstItem = true;
for (var i = 0; firstItem && i < this.children.length; i++) {
if (this.children[i].type.indexOf("staff-extra") < 0 && this.children[i].type !== "tempo")
firstItem = false;
}
if (!firstItem) {
this.beams.push("bar");
this.otherchildren.push("bar");
}
}
this.children[this.children.length] = absElem;
this.setRange(absElem);
};
VoiceElement.prototype.setLimit = function (member, child) {
// Sometimes we get an absolute element in here and sometimes we get some type of relative element.
// If there is a "specialY" element, then assume it is an absolute element. If that doesn't exist, look for the
// same members at the top level, because that's where they are in relative elements.
var specialY = child.specialY;
if (!specialY) specialY = child;
if (!specialY[member]) return;
if (!this.specialY[member])
this.specialY[member] = specialY[member];
else
this.specialY[member] = Math.max(this.specialY[member], specialY[member]);
};
VoiceElement.prototype.adjustRange = function (child) {
if (child.bottom !== undefined)
this.bottom = Math.min(this.bottom, child.bottom);
if (child.top !== undefined)
this.top = Math.max(this.top, child.top);
};
VoiceElement.prototype.setRange = function (child) {
this.adjustRange(child);
this.setLimit('tempoHeightAbove', child);
this.setLimit('partHeightAbove', child);
this.setLimit('volumeHeightAbove', child);
this.setLimit('dynamicHeightAbove', child);
this.setLimit('endingHeightAbove', child);
this.setLimit('chordHeightAbove', child);
this.setLimit('lyricHeightAbove', child);
this.setLimit('lyricHeightBelow', child);
this.setLimit('chordHeightBelow', child);
this.setLimit('volumeHeightBelow', child);
this.setLimit('dynamicHeightBelow', child);
};
VoiceElement.prototype.addOther = function (child) {
this.otherchildren.push(child);
this.setRange(child);
};
VoiceElement.prototype.addBeam = function (child) {
this.beams.push(child);
};
VoiceElement.prototype.setWidth = function (width) {
this.w = width;
};
module.exports = VoiceElement;
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