1 files changed, 31 insertions, 0 deletions
diff --git a/android/source/src/java/org/mozilla/gecko/gfx/FixedZoomTileLayer.java b/android/source/src/java/org/mozilla/gecko/gfx/FixedZoomTileLayer.java
new file mode 100644
index 000000000..e86494c20
--- /dev/null
+++ b/android/source/src/java/org/mozilla/gecko/gfx/FixedZoomTileLayer.java
@@ -0,0 +1,31 @@
+package org.mozilla.gecko.gfx;
+
+import android.content.Context;
+import android.graphics.RectF;
+
+public class FixedZoomTileLayer extends ComposedTileLayer {
+    public FixedZoomTileLayer(Context context) {
+        super(context);
+    }
+
+    @Override
+    protected RectF getViewPort(ImmutableViewportMetrics viewportMetrics) {
+        float zoom = getZoom(viewportMetrics);
+        RectF rect = normalizeRect(viewportMetrics.getViewport(), viewportMetrics.zoomFactor, zoom);
+        return inflate(roundToTileSize(rect, tileSize), getInflateFactor());
+    }
+
+    @Override
+    protected float getZoom(ImmutableViewportMetrics viewportMetrics) {
+        return 1.0f / 16.0f;
+    }
+
+    @Override
+    protected int getTilePriority() {
+        return -1;
+    }
+
+    private IntSize getInflateFactor() {
+        return new IntSize(tileSize.width, tileSize.height*6);
+    }
+}