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[android] Handle gracefully gradients with only one stop

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Handles erroneous gradient which contains only one stop or two
stops at the same place, but merged into one stop by extractGradient().
This commit is contained in:
Lukas Weber
2018-06-14 14:32:56 +02:00
parent f28a343a8d
commit b1462e08f5
1 changed files with 13 additions and 0 deletions
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13
android/src/main/java/com/horcrux/svg/Brush.java
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@@ -18,7 +18,9 @@ import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Shader;
import com.facebook.common.logging.FLog;
import com.facebook.react.bridge.ReadableArray;
import com.facebook.react.common.ReactConstants;
class Brush {
private BrushType mType = BrushType.LINEAR_GRADIENT;
@@ -108,6 +110,17 @@ class Brush {
float[] stops = new float[stopsCount];
parseGradientStops(mColors, stopsCount, stops, stopsColors, opacity);
if (stops.length == 1) {
// Gradient with only one stop will make LinearGradient/RadialGradient
// throw. It may happen when source SVG contains only one stop or
// two stops at the same spot (see lib/extract/extractGradient.js).
// Although it's mistake SVGs like this can be produced by vector
// editors or other tools, so let's handle that gracefully.
stopsColors = new int[] { stopsColors[0], stopsColors[0] };
stops = new float[] { stops[0], stops[0] };
FLog.w(ReactConstants.TAG, "Gradient contains only on stop");
}
if (mType == BrushType.LINEAR_GRADIENT) {
double x1 = PropHelper.fromRelative(mPoints.getString(0), width, offsetX, scale, paint.getTextSize());
double y1 = PropHelper.fromRelative(mPoints.getString(1), height, offsetY, scale, paint.getTextSize());