1 files changed, 39 insertions, 0 deletions
diff --git a/debian/missing-sources/epoch/src/time/line.coffee b/debian/missing-sources/epoch/src/time/line.coffee
new file mode 100644
index 0000000..8a4271b
--- /dev/null
+++ b/debian/missing-sources/epoch/src/time/line.coffee
@@ -0,0 +1,39 @@
+
+# Real-time line chart implementation
+class Epoch.Time.Line extends Epoch.Time.Plot
+  constructor: (@options={}) ->
+    @options.type ?= 'time.line'
+    super(@options)
+    @draw()
+
+  # Sets the graphics context styles based ont he given layer class name.
+  # @param [String] className The class name of the layer for which to set the styles.
+  setStyles: (className) ->
+    styles = @getStyles "g.#{className.replace(/\s/g,'.')} path.line"
+    @ctx.fillStyle = styles.fill
+    @ctx.strokeStyle = styles.stroke
+    @ctx.lineWidth = @pixelRatio * styles['stroke-width'].replace('px', '')
+
+  # Draws the line chart.
+  draw: (delta=0) ->
+    @clear()
+    w = @w()
+    for layer in @getVisibleLayers()
+      continue unless Epoch.isNonEmptyArray(layer.values)
+      @setStyles(layer.className)
+      @ctx.beginPath()
+      y = @y(layer.range)
+      [i, k, trans] = [@options.windowSize, layer.values.length, @inTransition()]
+
+      while (--i >= -2) and (--k >= 0)
+        entry = layer.values[k]
+        args = [(i+1)*w+delta, y(entry.y)]
+        args[0] += w if trans
+        if i == @options.windowSize - 1
+          @ctx.moveTo.apply @ctx, args
+        else
+          @ctx.lineTo.apply @ctx, args
+
+      @ctx.stroke()
+
+    super()