File size: 3,224 Bytes
af6912c |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 |
var drawStaffGroup = require('./staff-group');
var setPaperSize = require('./set-paper-size');
var nonMusic = require('./non-music');
var spacing = require('../helpers/spacing');
var Selectables = require('./selectables');
function draw(renderer, classes, abcTune, width, maxWidth, responsive, scale, selectTypes, tuneNumber, lineOffset) {
var selectables = new Selectables(renderer.paper, selectTypes, tuneNumber);
var groupClasses = {}
if (classes.shouldAddClasses)
groupClasses.klass = "abcjs-meta-top"
renderer.paper.openGroup(groupClasses)
renderer.moveY(renderer.padding.top);
nonMusic(renderer, abcTune.topText, selectables);
renderer.paper.closeGroup()
renderer.moveY(renderer.spacing.music);
var staffgroups = [];
for (var line = 0; line < abcTune.lines.length; line++) {
classes.incrLine();
var abcLine = abcTune.lines[line];
if (abcLine.staff) {
if (classes.shouldAddClasses)
groupClasses.klass = "abcjs-staff-wrapper abcjs-l" + classes.lineNumber
renderer.paper.openGroup(groupClasses)
if (abcLine.vskip) {
renderer.moveY(abcLine.vskip);
}
if (staffgroups.length >= 1)
addStaffPadding(renderer, renderer.spacing.staffSeparation, staffgroups[staffgroups.length - 1], abcLine.staffGroup);
var staffgroup = engraveStaffLine(renderer, abcLine.staffGroup, selectables, line);
staffgroup.line = lineOffset + line; // If there are non-music lines then the staffgroup array won't line up with the line array, so this keeps track.
staffgroups.push(staffgroup);
renderer.paper.closeGroup()
} else if (abcLine.nonMusic) {
if (classes.shouldAddClasses)
groupClasses.klass = "abcjs-non-music"
renderer.paper.openGroup(groupClasses)
nonMusic(renderer, abcLine.nonMusic, selectables);
renderer.paper.closeGroup()
}
}
classes.reset();
if (abcTune.bottomText && abcTune.bottomText.rows && abcTune.bottomText.rows.length > 0) {
if (classes.shouldAddClasses)
groupClasses.klass = "abcjs-meta-bottom"
renderer.paper.openGroup(groupClasses)
renderer.moveY(24); // TODO-PER: Empirically discovered. What variable should this be?
nonMusic(renderer, abcTune.bottomText, selectables);
renderer.paper.closeGroup()
}
setPaperSize(renderer, maxWidth, scale, responsive);
return { staffgroups: staffgroups, selectables: selectables.getElements() };
}
function engraveStaffLine(renderer, staffGroup, selectables, lineNumber) {
drawStaffGroup(renderer, staffGroup, selectables, lineNumber);
var height = staffGroup.height * spacing.STEP;
renderer.y += height;
return staffGroup;
}
function addStaffPadding(renderer, staffSeparation, lastStaffGroup, thisStaffGroup) {
var lastStaff = lastStaffGroup.staffs[lastStaffGroup.staffs.length - 1];
var lastBottomLine = -(lastStaff.bottom - 2); // The 2 is because the scale goes to 2 below the last line.
var nextTopLine = thisStaffGroup.staffs[0].top - 10; // Because 10 represents the top line.
var naturalSeparation = nextTopLine + lastBottomLine; // This is how far apart they'd be without extra spacing
var separationInPixels = naturalSeparation * spacing.STEP;
if (separationInPixels < staffSeparation)
renderer.moveY(staffSeparation - separationInPixels);
}
module.exports = draw;
|