Merge pull request #111 from MoOx/patch-2

Add Webapi.Canvas.toBlob & Webapi.Canvas.toDataUrl methods

Author: TheSpyder

src/Webapi/Webapi__Canvas.res

@@ -4,6 +4,14 @@ module WebGl = Webapi__Canvas__WebGl
 module CanvasElement = {
   @send external getContext2d: (Dom.element, @as("2d") _) => Canvas2d.t = "getContext"
   @send external getContextWebGl: (Dom.element, @as("webgl") _) => WebGl.glT = "getContext"
+  @send external toBlob: (Dom.element, Blob.t => unit) => unit = "toBlob"
+  @send external toBlobWithType: (Dom.element, Blob.t => unit, string) => unit = "toBlob"
+  @send
+  external toBlobWithTypeAndQuality: (Dom.element, Blob.t => unit, string, float) => unit = "toBlob"
+  @send external toDataUrl: Dom.element => unit = "toDataUrl"
+  @send external toDataUrlWithType: (Dom.element, string) => unit = "toDataUrl"
+  @send
+  external toDataUrlWithTypeAndEncoderOptions: (Dom.element, string, float) => unit = "toDataUrl"
   @get external height: Dom.element => int = "height"
   @set external setHeight: (Dom.element, int) => unit = "height"
   @get external width: Dom.element => int = "width"