Zach's git repos / prosongsa
Backend for songs.zachdecook.com
Diffstat (limited to 'jsonly.js')
-rw-r--r--jsonly.js110
1 files changed, 110 insertions, 0 deletions
diff --git a/jsonly.js b/jsonly.js
new file mode 100644
index 0000000..9e1cf2d
--- /dev/null
+++ b/jsonly.js
@@ -0,0 +1,110 @@
+/**
+ * @brief jsonly.js contains the functions that are only called in js,
+ * not translated from server-side code.
+ */
+
+$('#transp').change( do_transpose );
+var lastTransp = parseInt($('#transp').val());
+
+function do_transpose()
+{
+ var transp = parseInt($('#transp').val());
+ var neww = transp;
+
+ $(".tabs").each(function(){
+ // Since we only store text that is displayed, transpose relative to
+ // previous transposition.
+ // Requires the class to be "tabs chordXX";
+ var old = parseInt($(this).attr('class').substring(10));
+ if ( isNaN(old) )
+ {
+ old = $(this).attr('class').substring(10);
+ neww = transpadd(old, transp - lastTransp);
+ }
+ $(this).text( zj_transpose2( $(this).text(), transp - lastTransp ) );
+ $(this).removeClass("chord"+old);
+ $(this).addClass("chord"+neww);
+ });
+ $(".btn[data-key]").each(function(){
+ console.log($(this));
+ var oldKey = $(this).attr('data-key');
+ var newKey = transpadd(oldKey, transp - lastTransp);
+ $(this).removeClass('btn-'+oldKey);
+ $(this).addClass('btn-'+newKey);
+ $(this).attr('data-key', newKey);
+ $(this).text( $(this).attr('data-words') + newKey );
+ var tt = parseInt($(this).attr('href').match(/transp=(.+)/)[1]);
+ tt = ( transp - lastTransp + 24 + tt)%12;
+ var newhref = $(this).attr('href').match(/(.*?&transp=).+/)[1] + tt;
+ $(this).attr('href', newhref);
+ })
+ lastTransp = transp;
+}
+
+$(".tabs").click(function(e) {
+ s = window.getSelection();
+ var range = s.getRangeAt(0);
+ var node = s.anchorNode;
+ while (range.toString().indexOf(' ') != 0 ) {
+ if (range.startOffset == 0)
+ break;
+ range.setStart(node, (range.startOffset - 1));
+ }
+ range.setStart(node, Math.max(0,range.startOffset));
+ while (range.toString().lastIndexOf(' ') != range.toString().length - 1
+ || range.toString().length <= 1 )
+ {
+ range.setEnd(node, range.endOffset+1);
+ if ( range.endOffset == node.length)
+ break;
+ }
+ //range.setEnd(Math.min(range.endOffset+1,node.length);
+ var str = range.toString().trim();
+ if( str != "" )
+ show_tab(str);
+});
+
+function show_tab( chord )
+{
+ var canvas = $("#chordy")[0];
+ var context = canvas.getContext('2d');
+ context.clearRect(0, 0, canvas.width, canvas.height);
+
+ getChordFrets(chord);
+
+/*
+ var img = "<img class='myimage' src='chordimages/" + chord + ".png'/>";
+ $("#chordarea").append(img);
+ $(".myimage").error(function(){
+ $(this).hide();
+ });*/
+}
+
+function getChordFrets(chord)
+{
+ $("#messages").html("");
+ chord = chord.replace("(", "");
+ chord = chord.replace(")", "");
+ chord = chord.replace("sus", "s");
+ chord = chord.replace("s4", "s");
+ chord = chord.replace("s", "sus");
+ chord = chord.replace("7sus", "sus7");
+ chord = chord.replace("mj7", "maj7");
+ var chordd = chord;
+ chordd = chordd.replace("Db", "C#");
+ chordd = chordd.replace("Eb", "D#");
+ chordd = chordd.replace("Gb", "F#");
+ chordd = chordd.replace("Ab", "G#");
+ chordd = chordd.replace("Bb", "A#");
+ taco = chorddict[chordd];
+ if ( taco ) {
+ ChordCharter.drawChord("chordy", 30, 25, chord, taco);
+ } else {
+ //Cross-origin stuff
+ /*var url = "http://jguitar.com/chordsearch?chordsearch="+chord+"&labels=none&fretSpan=4";
+ $.get(url, function(data, status){
+ $("#messages").prepend("something something gotten");
+ });*/
+ $("#messages").prepend("Couldn't find a chord for '"+ chord +"'");
+ }
+} \ No newline at end of file