fix: enforce colorstop min 0 (#1743)

2019-04-07 02:24:07 -04:00 · 2019-04-07 02:24:07 -04:00 · 349bbf137a
parent c45ef099fe
commit 349bbf137a
1 changed files with 4 additions and 1 deletions
--- a/src/renderer/CanvasRenderer.js
+++ b/src/renderer/CanvasRenderer.js
@ -26,7 +26,10 @@ const addColorStops = (
    const maxStop = Math.max.apply(null, gradient.colorStops.map(colorStop => colorStop.stop));
    const f = 1 / Math.max(1, maxStop);
    gradient.colorStops.forEach(colorStop => {
-        canvasGradient.addColorStop(f * colorStop.stop, colorStop.color.toString());
+        canvasGradient.addColorStop(
+            Math.floor(Math.max(0, f * colorStop.stop)),
+            colorStop.color.toString()
+        );
    });
 };