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Workaround for a Safari issue

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This commit is contained in:
Andreas Hocevar
2017-10-20 01:22:45 +02:00
parent 7f865b8520
commit 8c46f6d1f0
1 changed files with 5 additions and 1 deletions
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6
src/ol/render/canvas.js
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@@ -108,7 +108,7 @@ ol.render.canvas.checkFont = (function() {
function isAvailable(fontFamily) {
if (!context) {
context = ol.dom.createCanvasContext2D();
context = ol.dom.createCanvasContext2D(1, 1);
context.font = '32px monospace';
referenceWidth = context.measureText(text).width;
}
@@ -120,6 +120,10 @@ ol.render.canvas.checkFont = (function() {
// fallback was used instead of the font we wanted, so the font is not
// available.
available = width != referenceWidth;
// Setting the font back to a different one works around an issue in
// Safari where subsequent `context.font` assignments with the same font
// will not re-attempt to use a font that is currently loading.
context.font = '32px monospace';
}
return available;
}