From f3138d6039b2ce68bcd35499abbd334b458a4441 Mon Sep 17 00:00:00 2001
From: Tom Payne <twpayne@gmail.com>
Date: Mon, 11 Nov 2013 03:17:28 +0100
Subject: [PATCH] Fire postcompose events from map

---
 src/ol/renderer/canvas/canvasmaprenderer.js | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/ol/renderer/canvas/canvasmaprenderer.js b/src/ol/renderer/canvas/canvasmaprenderer.js
index 5a2d32c64a..a771dea16f 100644
--- a/src/ol/renderer/canvas/canvasmaprenderer.js
+++ b/src/ol/renderer/canvas/canvasmaprenderer.js
@@ -10,6 +10,9 @@ goog.require('ol.css');
 goog.require('ol.layer.Image');
 goog.require('ol.layer.Tile');
 goog.require('ol.layer.Vector');
+goog.require('ol.render.RenderEvent');
+goog.require('ol.render.RenderEventType');
+goog.require('ol.render.canvas.Immediate');
 goog.require('ol.renderer.Map');
 goog.require('ol.renderer.canvas.ImageLayer');
 goog.require('ol.renderer.canvas.TileLayer');
@@ -122,6 +125,15 @@ ol.renderer.canvas.Map.prototype.renderFrame = function(frameState) {
     layerRenderer.composeFrame(frameState, layerState, context);
   }
 
+  var map = this.getMap();
+  if (map.hasListener(ol.render.RenderEventType.POSTCOMPOSE)) {
+    var render = new ol.render.canvas.Immediate(
+        context, frameState.extent, frameState.coordinateToPixelMatrix);
+    var postComposeEvent = new ol.render.RenderEvent(
+        ol.render.RenderEventType.POSTCOMPOSE, map, render, context, null);
+    map.dispatchEvent(postComposeEvent);
+  }
+
   if (!this.renderedVisible_) {
     goog.style.setElementShown(this.canvas_, true);
     this.renderedVisible_ = true;