add bar height parameter (#1020)

* add barHeight parameter * Update drawer.multicanvas.js * Update drawer.canvas.js
katspaugh · Mar 5, 2017 · 029af95 · 029af95
1 parent 1ab8439
commit 029af95
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Showing 3 changed files with 5 additions and 4 deletions.
diff --git a/src/drawer.canvas.js b/src/drawer.canvas.js
@@ -101,7 +101,7 @@ WaveSurfer.util.extend(WaveSurfer.Drawer.Canvas, {
         var gap = Math.max(this.params.pixelRatio, ~~(bar / 2));
         var step = bar + gap;
 
-        var absmax = 1;
+        var absmax = 1 / this.params.barHeight;
         if (this.params.normalize) {
             var max = WaveSurfer.util.max(peaks);
             var min = WaveSurfer.util.min(peaks);
@@ -165,7 +165,7 @@ WaveSurfer.util.extend(WaveSurfer.Drawer.Canvas, {
             scale = this.width / length;
         }
 
-        var absmax = 1;
+        var absmax = 1 / this.params.barHeight;
         if (this.params.normalize) {
             var max = WaveSurfer.util.max(peaks);
             var min = WaveSurfer.util.min(peaks);

diff --git a/src/drawer.multicanvas.js b/src/drawer.multicanvas.js
@@ -172,7 +172,7 @@ WaveSurfer.util.extend(WaveSurfer.Drawer.MultiCanvas, {
         var gap = Math.max(this.params.pixelRatio, ~~(bar / 2));
         var step = bar + gap;
 
-        var absmax = 1;
+        var absmax = 1 / this.params.barHeight;
         if (this.params.normalize) {
             var max = WaveSurfer.util.max(peaks);
             var min = WaveSurfer.util.min(peaks);
@@ -220,7 +220,7 @@ WaveSurfer.util.extend(WaveSurfer.Drawer.MultiCanvas, {
         var offsetY = height * channelIndex || 0;
         var halfH = height / 2;
 
-        var absmax = 1;
+        var absmax = 1 / this.params.barHeight;
         if (this.params.normalize) {
             var max = WaveSurfer.util.max(peaks);
             var min = WaveSurfer.util.min(peaks);

diff --git a/src/wavesurfer.js b/src/wavesurfer.js
@@ -14,6 +14,7 @@ var WaveSurfer = {
         audioRate     : 1,
         autoCenter    : true,
         backend       : 'WebAudio',
+        barHeight     : 1,
         container     : null,
         cursorColor   : '#333',
         cursorWidth   : 1,