From 9307c35c176f9ca2b9c52f09215571e44ec02b65 Mon Sep 17 00:00:00 2001
From: Andreas Hocevar <andreas.hocevar@gmail.com>
Date: Wed, 29 Nov 2017 16:00:59 +0100
Subject: [PATCH] Improve vertical font placement in Firefox

---
 src/ol/render/canvas/textreplay.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/ol/render/canvas/textreplay.js b/src/ol/render/canvas/textreplay.js
index d19beae119..4b5b795d41 100644
--- a/src/ol/render/canvas/textreplay.js
+++ b/src/ol/render/canvas/textreplay.js
@@ -323,19 +323,19 @@ ol.render.canvas.TextReplay.prototype.getImage = function(text, textKey, fillKey
     if (fillKey) {
       context.fillStyle = fillState.fillStyle;
     }
-    context.textBaseline = 'top';
+    context.textBaseline = 'middle';
     context.textAlign = 'center';
     var leftRight = (0.5 - align);
     var x = align * label.width / scale + leftRight * strokeWidth;
     var i;
     if (strokeKey) {
       for (i = 0; i < numLines; ++i) {
-        context.strokeText(lines[i], x + leftRight * widths[i], 0.5 * strokeWidth + i * lineHeight);
+        context.strokeText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);
       }
     }
     if (fillKey) {
       for (i = 0; i < numLines; ++i) {
-        context.fillText(lines[i], x + leftRight * widths[i], 0.5 * strokeWidth + i * lineHeight);
+        context.fillText(lines[i], x + leftRight * widths[i], 0.5 * (strokeWidth + lineHeight) + i * lineHeight);
       }
     }
   }